CoffeeScript 0.5.5, with string interpolation and internal documentation

This reverts commit 9503ea3040.

Cakefile

@@ -0,0 +1,84 @@
+fs: require 'fs'
+CoffeeScript: require 'coffee-script'
+
+# Run a CoffeeScript through our node/coffee interpreter.
+run: (args) ->
+  proc: process.createChildProcess 'bin/coffee', args
+  proc.addListener 'error', (err) -> if err then puts err
+
+
+option '-p', '--prefix [DIR]', 'set the installation prefix for `cake install`'
+
+task 'install', 'install CoffeeScript into /usr/local (or --prefix)', (options) ->
+  base: options.prefix or '/usr/local'
+  lib:  base + '/lib/coffee-script'
+  exec([
+    'mkdir -p ' + lib
+    'cp -rf bin lib LICENSE README package.json src vendor ' + lib
+    'ln -sf ' + lib + '/bin/coffee ' + base + '/bin/coffee'
+    'ln -sf ' + lib + '/bin/cake ' + base + '/bin/cake'
+  ].join(' && '), (err, stdout, stderr) ->
+   if err then print stderr
+  )
+
+
+task 'build', 'build the CoffeeScript language from source', ->
+  files: fs.readdirSync 'src'
+  files: 'src/' + file for file in files when file.match(/\.coffee$/)
+  run ['-c', '-o', 'lib'].concat(files)
+
+
+task 'build:full', 'checkout /lib, rebuild the source twice, and run the tests', ->
+  exec 'git co lib && bin/cake build && bin/cake build && bin/cake test', (err, stdout, stderr) ->
+    print stdout if stdout
+    print stderr if stderr
+    throw err    if err
+
+
+task 'build:parser', 'rebuild the Jison parser (run build first)', ->
+  require.paths.unshift 'vendor/jison/lib'
+  parser: require('grammar').parser
+  js: parser.generate()
+  parser_path: 'lib/parser.js'
+  fs.writeFile parser_path, js
+
+
+task 'build:ultraviolet', 'build and install the Ultraviolet syntax highlighter', ->
+  exec 'plist2syntax extras/CoffeeScript.tmbundle/Syntaxes/CoffeeScript.tmLanguage', (err) ->
+    exec 'sudo mv coffeescript.yaml /usr/local/lib/ruby/gems/1.8/gems/ultraviolet-0.10.2/syntax/coffeescript.syntax'
+
+
+task 'build:browser', 'rebuild the merged script for inclusion in the browser', ->
+  exec 'rake browser', (err) ->
+    throw err if err
+
+
+task 'doc:site', 'watch and continually rebuild the documentation for the website', ->
+  exec 'rake doc'
+
+
+task 'doc:source', 'rebuild the internal documentation', ->
+  exec 'docco src/*.coffee && cp -rf docs documentation && rm -r docs', (err) ->
+    throw err if err
+
+
+task 'doc:underscore', 'rebuild the Underscore.coffee documentation page', ->
+  exec 'uv -s coffeescript -t idle -h examples/underscore.coffee > documentation/underscore.html'
+
+
+task 'test', 'run the CoffeeScript language test suite', ->
+  process.mixin require 'assert'
+  test_count: 0
+  start_time: new Date()
+  [original_ok, original_throws]: [ok, throws]
+  process.mixin {
+    ok:     (args...) -> test_count += 1; original_ok(args...)
+    throws: (args...) -> test_count += 1; original_throws(args...)
+  }
+  process.addListener 'exit', ->
+    time: ((new Date() - start_time) / 1000).toFixed(2)
+    puts '\033[0;32mpassed ' + test_count + ' tests in ' + time + ' seconds\033[0m'
+  fs.readdir 'test', (err, files) ->
+    for file in files
+      fs.readFile 'test/' + file, (err, code) ->
+        CoffeeScript.run code, {source: file}

README

@@ -22,20 +22,21 @@
                                                         
   CoffeeScript is a little language that compiles into JavaScript.
   
-  Install the compiler:
-  gem install coffee-script
+  Install Node.js, and then the CoffeeScript compiler:
+  sudo bin/cake install
   
   Compile a script:
   coffee /path/to/script.coffee
   
   For documentation, usage, and examples, see:
-  http://jashkenas.github.com/coffee-script/
+  http://coffeescript.org/
   
-  To suggest a feature or report a bug:
+  To suggest a feature, report a bug, or general discussion:
   http://github.com/jashkenas/coffee-script/issues/
+  
+  If you'd like to chat, drop by #coffeescript on Freenode IRC,
+  or on webchat.freenode.net.
 
   The source repository:
   git://github.com/jashkenas/coffee-script.git
-  
-  To build CoffeeScript from source, install the "racc" gem and
-  run "rake build:parser". Then bin/coffee will work.
+

Rakefile

@@ -1,52 +1,15 @@
 require 'erb'
 require 'fileutils'
 require 'rake/testtask'
-
-desc "Run all tests"
-task :test do
-  $LOAD_PATH.unshift(File.expand_path('test'))
-  require 'redgreen' if Gem.available?('redgreen')
-  require 'test/unit'
-  Dir['test/*/**/test_*.rb'].each {|test| require test }
-end
-
-namespace :build do
-
-  desc "Recompile the Racc parser (pass -v and -g for verbose debugging)"
-  task :parser, :racc_args do |t, args|
-    sh "racc #{args[:racc_args]} -o lib/coffee_script/parser.rb lib/coffee_script/grammar.y"
-  end
-
-  desc "Compile the Narwhal interface"
-  task :narwhal do
-    sh "bin/coffee src/narwhal/*.coffee -o lib/coffee_script/narwhal"
-  end
-
-  desc "Continually compile the CoffeeScript/Node.js components with --watch"
-  task :node do
-    sh "bin/coffee -w src/*.coffee -o lib/coffee_script/"
-  end
-
-  desc "Compile and install the Ultraviolet syntax highlighter"
-  task :ultraviolet do
-    sh "plist2syntax extras/CoffeeScript.tmbundle/Syntaxes/CoffeeScript.tmLanguage"
-    sh "sudo mv coffeescript.yaml /usr/local/lib/ruby/gems/1.8/gems/ultraviolet-0.10.2/syntax/coffeescript.syntax"
-  end
-
-  desc "Rebuild the Underscore.coffee documentation page"
-  task :underscore do
-    sh "uv -s coffeescript -t idle -h examples/underscore.coffee > documentation/underscore.html"
-  end
-
-end
+require 'rubygems'
+require 'yui/compressor'
 
 desc "Build the documentation page"
 task :doc do
   source = 'documentation/index.html.erb'
-  child = fork { exec "bin/coffee documentation/coffee/*.coffee -o documentation/js -w" }
+  child = fork { exec "bin/coffee -c documentation/coffee/*.coffee -o documentation/js -w" }
   at_exit { Process.kill("INT", child) }
   Signal.trap("INT") { exit }
-  # `uv -t idle -s coffeescript -h examples/underscore.coffee > documentation/underscore.html`
   loop do
     mtime = File.stat(source).mtime
     if !@mtime || mtime > @mtime
@@ -58,21 +21,11 @@ task :doc do
   end
 end
 
-namespace :gem do
-
-  desc 'Build and install the coffee-script gem'
-  task :install do
-    verbose = "lib/coffee_script/parser.output"
-    FileUtils.rm(verbose) if File.exists?(verbose)
-    sh "gem build coffee-script.gemspec"
-    sh "sudo gem install #{Dir['*.gem'].join(' ')} --local --no-ri --no-rdoc"
-  end
-
-  desc 'Uninstall the coffee-script gem'
-  task :uninstall do
-    sh "sudo gem uninstall -x coffee-script"
-  end
-
+desc "Build the single concatenated and minified script for the browser"
+task :browser do
+  sources = %w(rewriter.js lexer.js parser.js scope.js nodes.js coffee-script.js)
+  code    = sources.map {|s| File.read('lib/' + s) }.join('')
+  code    = YUI::JavaScriptCompressor.new.compress(code)
+  File.open('extras/coffee-script.js', 'w+') {|f| f.write(code) }
 end
 
-task :default => :test

bin/cake

@@ -0,0 +1,9 @@
+#!/usr/bin/env node
+
+process.mixin(require('sys'));
+var path = require('path');
+var fs = require('fs');
+var lib = path.join(path.dirname(fs.realpathSync(__filename)), '../lib');
+
+require.paths.unshift(lib);
+require('cake').run();

bin/coffee

@@ -1,5 +1,9 @@
-#!/usr/bin/env ruby
+#!/usr/bin/env node
 
-require "#{File.dirname(__FILE__)}/../lib/coffee_script/command_line.rb"
+process.mixin(require('sys'));
+var path = require('path');
+var fs = require('fs');
+var lib = path.join(path.dirname(fs.realpathSync(__filename)), '../lib');
 
-CoffeeScript::CommandLine.new
+require.paths.unshift(lib);
+require('command').run();

coffee-script.gemspec

@@ -1,27 +0,0 @@
-Gem::Specification.new do |s|
-  s.name      = 'coffee-script'
-  s.version   = '0.3.2'         # Keep version in sync with coffee-script.rb
-  s.date      = '2010-2-8'
-
-  s.homepage    = "http://jashkenas.github.com/coffee-script/"
-  s.summary     = "The CoffeeScript Compiler"
-  s.description = <<-EOS
-    CoffeeScript is a little language that compiles into JavaScript. Think
-    of it as JavaScript's less ostentatious kid brother -- the same genes,
-    roughly the same height, but a different sense of style. Apart from a
-    handful of bonus goodies, statements in CoffeeScript correspond
-    one-to-one with their equivalent in JavaScript, it's just another
-    way of saying it.
-  EOS
-
-  s.authors           = ['Jeremy Ashkenas']
-  s.email             = 'jashkenas@gmail.com'
-  s.rubyforge_project = 'coffee-script'
-  s.has_rdoc          = false
-
-  s.require_paths     = ['lib']
-  s.executables       = ['coffee']
-
-  s.files = Dir['bin/*', 'examples/*', 'extras/**/*', 'lib/**/*',
-                'coffee-script.gemspec', 'LICENSE', 'README', 'package.json']
-end

documentation/coffee/array_comprehensions.coffee

@@ -1,5 +1,5 @@
 # Eat lunch.
-lunch: eat(food) for food in ['toast', 'cheese', 'wine']
+lunch: eat food for food in ['toast', 'cheese', 'wine']
 
 # Naive collision detection.
 for roid in asteroids

documentation/coffee/cake_tasks.coffee

@@ -0,0 +1,5 @@
+process.mixin require 'assert'
+
+task 'test', 'run each of the unit tests', ->
+  for test in test_files
+    fs.readFile test, (err, code) -> eval coffee.compile code

documentation/coffee/classes.coffee

@@ -0,0 +1,29 @@
+class Animal
+  move: (meters) ->
+    alert @name + " moved " + meters + "m."
+
+class Snake extends Animal
+  constructor: (name) ->
+    @name: name
+
+  move: ->
+    alert "Slithering..."
+    super 5
+
+class Horse extends Animal
+  constructor: (name) ->
+    @name: name
+
+  move: ->
+    alert "Galloping..."
+    super 45
+
+sam: new Snake "Sammy the Python"
+tom: new Horse "Tommy the Palomino"
+
+sam.move()
+tom.move()
+
+
+
+

documentation/coffee/interpolation.coffee

@@ -0,0 +1,2 @@
+author: "Wittgenstein"
+quote:  "A picture is a fact. -- $author"

documentation/coffee/interpolation_expression.coffee

@@ -0,0 +1,4 @@
+sentence: "${ 22 / 7 } is a decent approximation of π"
+
+
+

documentation/coffee/prototypes.coffee

@@ -0,0 +1,2 @@
+String::dasherize: ->
+  this.replace(/_/g, "-")

documentation/coffee/super.coffee

@@ -1,25 +0,0 @@
-Animal: ->
-Animal::move: (meters) ->
-  alert @name + " moved " + meters + "m."
-
-Snake: (name) -> @name: name
-Snake extends Animal
-Snake::move: ->
-  alert "Slithering..."
-  super 5
-
-Horse: (name) -> @name: name
-Horse extends Animal
-Horse::move: ->
-  alert "Galloping..."
-  super 45
-
-sam: new Snake "Sammy the Python"
-tom: new Horse "Tommy the Palomino"
-
-sam.move()
-tom.move()
-
-
-
-

documentation/css/amy.css

@@ -1,147 +0,0 @@
-pre.amy .PolymorphicVariants {
-   color: #60B0FF;
-   font-style: italic;
-}
-pre.amy .KeywordDecorator {
-   color: #D0D0FF;
-}
-pre.amy .Punctuation {
-   color: #805080;
-}
-pre.amy .InheritedClass {
-}
-pre.amy .InvalidDepricated {
-   background-color: #CC66FF;
-   color: #200020;
-}
-pre.amy .LibraryVariable {
-}
-pre.amy .TokenReferenceOcamlyacc {
-   color: #3CB0D0;
-}
-pre.amy .Storage {
-   color: #B0FFF0;
-}
-pre.amy .KeywordOperator {
-   color: #A0A0FF;
-}
-pre.amy .CharacterConstant {
-   color: #666666;
-}
-pre.amy .line-numbers {
-   background-color: #800000;
-   color: #000000;
-}
-pre.amy .ClassName {
-   color: #70E080;
-}
-pre.amy .Int64Constant {
-   font-style: italic;
-}
-pre.amy .NonTerminalReferenceOcamlyacc {
-   color: #C0F0F0;
-}
-pre.amy .TokenDefinitionOcamlyacc {
-   color: #3080A0;
-}
-pre.amy .ClassType {
-   color: #70E0A0;
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-pre.amy .ControlKeyword {
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-pre.amy .LineNumberDirectives {
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-   color: #C080C0;
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-pre.amy .UserDefinedConstant {
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-pre.amy .Comment {
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-   color: #404080;
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documentation/css/docs.css

@@ -1,29 +1,29 @@
 body {
   font-size: 14px;
   line-height: 20px;
-  background: #f3f3f9;
   color: #191933;
   font-family: Arial, Helvetica, sans-serif;
 }
 div.container {
   width: 950px;
-  margin: 50px 0 50px 50px;
+  margin: 100px 0 50px 50px;
 }
-p {
-  padding-left: 13px;
+p, li {
   width: 625px;
 }
 a {
   color: #000055;
 }
 h1, h2, h3, h4, h5, h6 {
-  padding-left: 13px;
   margin-top: 40px;
 }
 br.clear {
   height: 0;
   clear: both;
 }
+ul {
+  padding-left: 20px;
+}
 b.header {
   color: #000055;
   display: block;
@@ -31,7 +31,7 @@ b.header {
   font-size: 16px;
 }
 li {
-  margin-bottom: 7px;
+  margin-bottom: 10px;
 }
 table {
   margin: 16px 0 0 13px; padding: 0;
@@ -43,7 +43,7 @@ table {
     td {
       padding: 9px 15px 9px 0;
     }
-code, pre, tt {
+code, pre, tt, textarea {
   font-family: Monaco, Consolas, "Lucida Console", monospace;
   font-size: 12px;
   line-height: 18px;
@@ -63,10 +63,15 @@ code, pre, tt {
     padding: 3px 0 3px 12px;
     font-size: 12px;
   }
+    pre.no_bar {
+      border-left: 0;
+      margin-left: 0;
+      padding-left: 0;
+    }
 div.code {
   position: relative;
   border: 1px solid #cacaca;
-  background: #fff;
+  background: #fafaff;
   padding: 7px 0 10px 0;
   -moz-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px;
   -webkit-box-shadow: 0px 0px 7px #cacaca;
@@ -75,13 +80,187 @@ div.code {
     position: absolute;
     right: 8px; bottom: 8px;
   }
-  div.code pre {
+  div.code pre, div.code textarea {
     float: left;
     width: 450px;
+    background: #fafaff;
     border-left: 1px dotted #559;
     padding: 0 0 0 12px;
     margin: 0;
   }
     div.code pre:first-child {
       border-left: 0;
-    }
+    }
+
+#fadeout {
+  z-index: 50;
+  position: fixed;
+  left: 0; top: 0; right: 0;
+  height: 100px;
+  background: -webkit-gradient(linear, left top, left bottom, from(rgba(255, 255, 255, 255)), to(rgba(255, 255, 255, 0)));
+  background: -moz-linear-gradient(top, rgba(255, 255, 255, 255), rgba(255, 255, 255, 0));
+}
+
+#flybar {
+  position: fixed;
+  z-index: 100;
+  height: 50px;
+  left: 40px; right: 40px; top: 25px;
+  background: #ddd;
+  padding-left: 235px;
+  background: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5), to(#d0d0d0));
+  background: -moz-linear-gradient(top, #f5f5f5, #d0d0d0);
+  filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#F5F5F5', EndColorStr='#D0D0D0');
+  -webkit-border-radius: 20px; -moz-border-radius: 20px; border-radius: 20px;
+  -webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
+}
+  #logo {
+    display: block;
+    width: 215px; height: 50px;
+    background: url('../images/logo.png');
+    position: absolute;
+    top: 0px; left: 10px;
+  }
+  #error {
+    position: absolute;
+    -webkit-border-radius: 6px; -moz-border-radius: 6px; border-radius: 6px;
+    right: 15px; top: 15px; left: 722px;
+    height: 15px;
+    padding: 2px 5px;
+    background: #fdcdcc;
+    color: #864544;
+    border: 1px solid #864544;
+    font: 10px/15px Arial;
+    overflow: hidden;
+    text-transform: uppercase;
+  }
+  .navigation {
+    height: 50px;
+    font: bold 11px/50px Arial;
+    text-transform: uppercase;
+    position: relative;
+    float: left;
+    padding: 0 20px;
+    border: 1px solid #bbb;
+    border-top: 0; border-bottom: 0; border-left-width: 0;
+    cursor: pointer;
+  }
+    body.full_screen .navigation {
+      position: static;
+    }
+    .navigation.toc {
+      border-left-width: 1px;
+    }
+    .navigation:hover,
+    .navigation.active {
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+      background: -webkit-gradient(linear, left top, left bottom, from(#f0f0f0), to(#c0c0c0));
+      background: -moz-linear-gradient(top, #f0f0f0, #c0c0c0);
+      filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#F0F0F0', EndColorStr='#C0C0C0');
+    }
+    .navigation .contents {
+      display: none;
+      position: absolute;
+      background: #fff;
+      top: 50px; left: 0;
+      padding: 5px 0;
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+      -webkit-border-top-right-radius: 0; -moz-border-radius-topright: 0;
+      -webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
+    }
+      .navigation.active .contents {
+        display: block;
+      }
+        .navigation .contents.repl_wrapper {
+          left: -162px;
+          width: 700px;
+          padding: 0;
+        }
+          body.full_screen .navigation .contents.repl_wrapper {
+            position: fixed;
+            width: auto; height: auto;
+            left: 60px; top: 75px; right: 60px; bottom: 30px;
+          }
+          .navigation .contents.repl_wrapper .code {
+            -webkit-box-shadow: none; -moz-box-shadow: none;
+            background: transparent;
+            border: 0;
+            position: static;
+          }
+            body.full_screen .navigation .contents.repl_wrapper .code {
+              height: 100%;
+              padding: 0; margin: 0;
+            }
+          .navigation .code button {
+            bottom: 10px;
+            text-transform: none;
+          }
+          .navigation .full_screen, .navigation .minimize {
+            right: auto;
+            left: 10px;
+            display: none;
+          }
+            body.minimized .full_screen, body.full_screen .minimize {
+              display: inline;
+            }
+      .navigation .contents a {
+        display: block;
+        width: 290px;
+        text-transform: none;
+        text-decoration: none;
+        font-weight: normal;
+        height: 12px;
+        line-height: 12px;
+        padding: 4px 10px;
+      }
+        .navigation .contents a:hover {
+          background: #f0f0f0;
+        }
+
+.bookmark {
+  display: block;
+  width: 0; height: 0;
+  position: relative;
+  top: -90px;
+}
+
+#repl_source, #repl_results {
+  background: transparent;
+  outline: none;
+  margin: 5px 0 20px;
+}
+  #repl_source_wrap {
+    margin-left: 5px;
+    height: 250px;
+    width: 307px;
+    position: relative;
+    float: left;
+  }
+    #repl_source {
+      width: 96%;
+      height: 100%;
+      border: 0;
+      resize: none;
+    }
+  #repl_results {
+    font-family: Monaco, Consolas, "Lucida Console", monospace;
+    text-transform: none;
+    font-weight: normal;
+    height: 260px;
+    margin-bottom: 25px;
+    overflow-y: auto;
+    width: 370px;
+  }
+    body.full_screen #repl_results, body.full_screen #repl_source_wrap {
+      width: auto; height: auto;
+      position: absolute;
+      margin-bottom: 0;
+      top: 10px; left: 10px; right: 10px; bottom: 40px;
+    }
+      body.full_screen #repl_source_wrap {
+        right: 50%;
+      }
+      body.full_screen #repl_results {
+        left: 50%;
+      }

documentation/css/idle.css

@@ -57,6 +57,7 @@ pre.idle .FunctionName {
    color: #21439C;
 }
 pre.idle .Variable {
+  color: #A535AE;
 }
 pre.idle .Comment {
    color: #919191;

documentation/docs/cake.html

@@ -0,0 +1,42 @@
+<!DOCTYPE html>  <html> <head>   <title>cake.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               cake.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p><code>cake</code> is a simplified version of <a href="http://www.gnu.org/software/make/">Make</a>
+(<a href="http://rake.rubyforge.org/">Rake</a>, <a href="http://github.com/280north/jake">Jake</a>)
+for CoffeeScript. You define tasks with names and descriptions in a Cakefile,
+and can call them from the command line, or invoke them from other tasks.</p>
+
+<p>Running <code>cake</code> with no arguments will print out a list of all the tasks in the
+current directory's Cakefile.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>External dependencies.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">fs: </span>          <span class="nx">require</span> <span class="s1">&#39;fs&#39;</span>
+<span class="nv">path: </span>        <span class="nx">require</span> <span class="s1">&#39;path&#39;</span>
+<span class="nv">optparse: </span>    <span class="nx">require</span> <span class="s1">&#39;optparse&#39;</span>
+<span class="nv">CoffeeScript: </span><span class="nx">require</span> <span class="s1">&#39;coffee-script&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>Keep track of the list of defined tasks, the accepted options, and so on.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">tasks: </span><span class="p">{}</span>
+<span class="nv">options: </span><span class="p">{}</span>
+<span class="nv">switches: </span><span class="p">[]</span>
+<span class="nv">oparse: </span><span class="kc">null</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Mixin the top-level Cake functions for Cakefiles to use directly.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nx">process</span><span class="p">.</span><span class="nx">mixin</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Define a Cake task with a short name, a sentence description,
+and the function to run as the action itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">task: </span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">description</span><span class="p">,</span> <span class="nx">action</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">tasks</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="p">{</span><span class="nv">name: </span><span class="nx">name</span><span class="p">,</span> <span class="nv">description: </span><span class="nx">description</span><span class="p">,</span> <span class="nv">action: </span><span class="nx">action</span><span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Define an option that the Cakefile accepts. The parsed options hash,
+containing all of the command-line options passed, will be made available
+as the first argument to the action.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">option: </span><span class="p">(</span><span class="nx">letter</span><span class="p">,</span> <span class="nx">flag</span><span class="p">,</span> <span class="nx">description</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">switches</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="nx">letter</span><span class="p">,</span> <span class="nx">flag</span><span class="p">,</span> <span class="nx">description</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Invoke another task in the current Cakefile.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">invoke: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">no_such_task</span> <span class="nx">name</span> <span class="nx">unless</span> <span class="nx">tasks</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span>
+    <span class="nx">tasks</span><span class="p">[</span><span class="nx">name</span><span class="p">].</span><span class="nx">action</span> <span class="nx">options</span>
+
+<span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Run <code>cake</code>. Executes all of the tasks you pass, in order. Note that Node's
+asynchrony may cause tasks to execute in a different order than you'd expect.
+If no tasks are passed, print the help screen.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.run: </span><span class="o">-&gt;</span>
+  <span class="nx">path</span><span class="p">.</span><span class="nx">exists</span> <span class="s1">&#39;Cakefile&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">exists</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="p">(</span><span class="s2">&quot;Cakefile not found in ${process.cwd()}&quot;</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">exists</span>
+    <span class="nv">args: </span><span class="nx">process</span><span class="p">.</span><span class="nx">argv</span><span class="p">[</span><span class="mi">2</span><span class="p">...</span><span class="nx">process</span><span class="p">.</span><span class="nx">argv</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span>
+    <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">fs</span><span class="p">.</span><span class="nx">readFileSync</span><span class="p">(</span><span class="s1">&#39;Cakefile&#39;</span><span class="p">),</span> <span class="p">{</span><span class="nv">source: </span><span class="s1">&#39;Cakefile&#39;</span><span class="p">}</span>
+    <span class="nv">oparse: </span><span class="k">new</span> <span class="nx">optparse</span><span class="p">.</span><span class="nx">OptionParser</span> <span class="nx">switches</span>
+    <span class="k">return</span> <span class="nx">print_tasks</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">args</span><span class="p">.</span><span class="nx">length</span>
+    <span class="nv">options: </span><span class="nx">oparse</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">args</span><span class="p">)</span>
+    <span class="nx">invoke</span> <span class="nx">arg</span> <span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Display the list of Cake tasks in a format similar to <code>rake -T</code></p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">print_tasks: </span><span class="o">-&gt;</span>
+  <span class="nx">puts</span> <span class="s1">&#39;&#39;</span>
+  <span class="k">for</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">task</span> <span class="k">of</span> <span class="nx">tasks</span>
+    <span class="nv">spaces: </span><span class="mi">20</span> <span class="o">-</span> <span class="nx">name</span><span class="p">.</span><span class="nx">length</span>
+    <span class="nv">spaces: </span><span class="k">if</span> <span class="nx">spaces</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="k">then</span> <span class="p">(</span><span class="s1">&#39; &#39;</span> <span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">..</span><span class="nx">spaces</span><span class="p">]).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nx">puts</span> <span class="s2">&quot;cake $name$spaces # ${task.description}&quot;</span>
+  <span class="nx">puts</span> <span class="nx">oparse</span><span class="p">.</span><span class="nx">help</span><span class="p">()</span> <span class="k">if</span> <span class="nx">switches</span><span class="p">.</span><span class="nx">length</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Print an error and exit when attempting to all an undefined task.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">no_such_task: </span><span class="p">(</span><span class="nx">task</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">writeError</span> <span class="s2">&quot;No such task: \&quot;$task\&quot;\n&quot;</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">exit</span> <span class="mi">1</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/coffee-script.html

@@ -0,0 +1,55 @@
+<!DOCTYPE html>  <html> <head>   <title>coffee-script.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               coffee-script.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>CoffeeScript can be used both on the server, as a command-line compiler based
+on Node.js/V8, or to run CoffeeScripts directly in the browser. This module
+contains the main entry functions for tokenzing, parsing, and compiling source
+CoffeeScript into JavaScript.</p>
+
+<p>If included on a webpage, it will automatically sniff out, compile, and
+execute all scripts present in <code>text/coffeescript</code> tags.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>Set up dependencies correctly for both the server and the browser.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="k">if</span> <span class="nx">process</span><span class="o">?</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">mixin</span> <span class="nx">require</span> <span class="s1">&#39;nodes&#39;</span>
+  <span class="nv">path: </span>        <span class="nx">require</span> <span class="s1">&#39;path&#39;</span>
+  <span class="nv">lexer: </span>  <span class="k">new</span> <span class="p">(</span><span class="nx">require</span><span class="p">(</span><span class="s1">&#39;lexer&#39;</span><span class="p">).</span><span class="nx">Lexer</span><span class="p">)()</span>
+  <span class="nv">parser: </span>      <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;parser&#39;</span><span class="p">).</span><span class="nx">parser</span>
+<span class="k">else</span>
+  <span class="nv">lexer: </span><span class="k">new</span> <span class="nx">Lexer</span><span class="p">()</span>
+  <span class="nv">parser: </span><span class="nx">exports</span><span class="p">.</span><span class="nx">parser</span>
+  <span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span><span class="p">.</span><span class="nv">CoffeeScript: </span><span class="p">{}</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>The current CoffeeScript version number.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.VERSION: </span><span class="s1">&#39;0.5.5&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Compile a string of CoffeeScript code to JavaScript, using the Coffee/Jison
+compiler.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.compile: </span><span class="p">(</span><span class="nx">code</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="k">try</span>
+    <span class="p">(</span><span class="nx">parser</span><span class="p">.</span><span class="nx">parse</span> <span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="nx">code</span><span class="p">).</span><span class="nx">compile</span> <span class="nx">options</span>
+  <span class="k">catch</span> <span class="nx">err</span>
+    <span class="nv">err.message: </span><span class="s2">&quot;In ${options.source}, ${err.message}&quot;</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">source</span>
+    <span class="k">throw</span> <span class="nx">err</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Tokenize a string of CoffeeScript code, and return the array of tokens.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.tokens: </span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="nx">code</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Tokenize and parse a string of CoffeeScript code, and return the AST. You can
+then compile it by calling <code>.compile()</code> on the root, or traverse it by using
+<code>.traverse()</code> with a callback.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.nodes: </span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nx">parser</span><span class="p">.</span><span class="nx">parse</span> <span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="nx">code</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Compile and execute a string of CoffeeScript (on the server), correctly
+setting <code>__filename</code>, <code>__dirname</code>, and relative <code>require()</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.run: </span><span class="p">(</span><span class="nx">code</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">module.filename: __filename: </span><span class="nx">options</span><span class="p">.</span><span class="nx">source</span>
+  <span class="nv">__dirname: </span><span class="nx">path</span><span class="p">.</span><span class="nx">dirname</span> <span class="nx">__filename</span>
+  <span class="nb">eval</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">options</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>The real Lexer produces a generic stream of tokens. This object provides a
+thin wrapper around it, compatible with the Jison API. We can then pass it
+directly as a "Jison lexer".</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">parser.lexer: </span><span class="p">{</span>
+  <span class="nv">lex: </span><span class="o">-&gt;</span>
+    <span class="nv">token: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="err">@</span><span class="nx">pos</span><span class="p">]</span> <span class="o">or</span> <span class="p">[</span><span class="s2">&quot;&quot;</span><span class="p">]</span>
+    <span class="err">@</span><span class="nx">pos</span> <span class="o">+=</span> <span class="mi">1</span>
+    <span class="k">this</span><span class="p">.</span><span class="nv">yylineno: </span><span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
+    <span class="k">this</span><span class="p">.</span><span class="nv">yytext: </span>  <span class="nx">token</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+    <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+  <span class="nv">setInput: </span><span class="p">(</span><span class="nx">tokens</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">tokens: </span><span class="nx">tokens</span>
+    <span class="err">@</span><span class="nv">pos: </span><span class="mi">0</span>
+  <span class="nv">upcomingInput: </span><span class="o">-&gt;</span> <span class="s2">&quot;&quot;</span>
+  <span class="nv">showPosition: </span><span class="o">-&gt;</span> <span class="err">@</span><span class="nx">pos</span>
+<span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Activate CoffeeScript in the browser by having it compile and evaluate
+all script tags with a content-type of <code>text/coffeescript</code>. This happens
+on page load. Unfortunately, the text contents of remote scripts cannot be
+accessed from the browser, so only inline script tags will work.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="k">if</span> <span class="nb">document</span><span class="o">?</span> <span class="o">and</span> <span class="nb">document</span><span class="p">.</span><span class="nx">getElementsByTagName</span>
+  <span class="nv">process_scripts: </span><span class="o">-&gt;</span>
+    <span class="k">for</span> <span class="nx">tag</span> <span class="k">in</span> <span class="nb">document</span><span class="p">.</span><span class="nx">getElementsByTagName</span><span class="p">(</span><span class="s1">&#39;script&#39;</span><span class="p">)</span> <span class="k">when</span> <span class="nx">tag</span><span class="p">.</span><span class="nx">type</span> <span class="o">is</span> <span class="s1">&#39;text/coffeescript&#39;</span>
+      <span class="nb">eval</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">tag</span><span class="p">.</span><span class="nx">innerHTML</span>
+  <span class="k">if</span> <span class="nb">window</span><span class="p">.</span><span class="nx">addEventListener</span>
+    <span class="nb">window</span><span class="p">.</span><span class="nx">addEventListener</span> <span class="s1">&#39;load&#39;</span><span class="p">,</span> <span class="nx">process_scripts</span><span class="p">,</span> <span class="kc">false</span>
+  <span class="k">else</span> <span class="k">if</span> <span class="nb">window</span><span class="p">.</span><span class="nx">attachEvent</span>
+    <span class="nb">window</span><span class="p">.</span><span class="nx">attachEvent</span> <span class="s1">&#39;onload&#39;</span><span class="p">,</span> <span class="nx">process_scripts</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/command.html

@@ -0,0 +1,115 @@
+<!DOCTYPE html>  <html> <head>   <title>command.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               command.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>The <code>coffee</code> utility. Handles command-line compilation of CoffeeScript
+into various forms: saved into <code>.js</code> files or printed to stdout, piped to
+<a href="http://javascriptlint.com/">JSLint</a> or recompiled every time the source is
+saved, printed as a token stream or as the syntax tree, or launch an
+interactive REPL.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>External dependencies.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">fs: </span>          <span class="nx">require</span> <span class="s1">&#39;fs&#39;</span>
+<span class="nv">path: </span>        <span class="nx">require</span> <span class="s1">&#39;path&#39;</span>
+<span class="nv">optparse: </span>    <span class="nx">require</span> <span class="s1">&#39;optparse&#39;</span>
+<span class="nv">CoffeeScript: </span><span class="nx">require</span> <span class="s1">&#39;coffee-script&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>The help banner that is printed when <code>coffee</code> is called without arguments.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">BANNER: </span><span class="s1">&#39;&#39;&#39;</span>
+<span class="s1">  coffee compiles CoffeeScript source files into JavaScript.</span>
+
+<span class="s1">  Usage:</span>
+<span class="s1">    coffee path/to/script.coffee</span>
+<span class="s1">        &#39;&#39;&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>The list of all the valid option flags that <code>coffee</code> knows how to handle.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">SWITCHES: </span><span class="p">[</span>
+  <span class="p">[</span><span class="s1">&#39;-c&#39;</span><span class="p">,</span> <span class="s1">&#39;--compile&#39;</span><span class="p">,</span>       <span class="s1">&#39;compile to JavaScript and save as .js files&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-i&#39;</span><span class="p">,</span> <span class="s1">&#39;--interactive&#39;</span><span class="p">,</span>   <span class="s1">&#39;run an interactive CoffeeScript REPL&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-o&#39;</span><span class="p">,</span> <span class="s1">&#39;--output [DIR]&#39;</span><span class="p">,</span>  <span class="s1">&#39;set the directory for compiled JavaScript&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-w&#39;</span><span class="p">,</span> <span class="s1">&#39;--watch&#39;</span><span class="p">,</span>         <span class="s1">&#39;watch scripts for changes, and recompile&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-p&#39;</span><span class="p">,</span> <span class="s1">&#39;--print&#39;</span><span class="p">,</span>         <span class="s1">&#39;print the compiled JavaScript to stdout&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-l&#39;</span><span class="p">,</span> <span class="s1">&#39;--lint&#39;</span><span class="p">,</span>          <span class="s1">&#39;pipe the compiled JavaScript through JSLint&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-s&#39;</span><span class="p">,</span> <span class="s1">&#39;--stdio&#39;</span><span class="p">,</span>         <span class="s1">&#39;listen for and compile scripts over stdio&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-e&#39;</span><span class="p">,</span> <span class="s1">&#39;--eval&#39;</span><span class="p">,</span>          <span class="s1">&#39;compile a string from the command line&#39;</span><span class="p">]</span>
+  <span class="p">[</span>      <span class="s1">&#39;--no-wrap&#39;</span><span class="p">,</span>       <span class="s1">&#39;compile without the top-level function wrapper&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-t&#39;</span><span class="p">,</span> <span class="s1">&#39;--tokens&#39;</span><span class="p">,</span>        <span class="s1">&#39;print the tokens that the lexer produces&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-n&#39;</span><span class="p">,</span> <span class="s1">&#39;--nodes&#39;</span><span class="p">,</span>         <span class="s1">&#39;print the parse tree that Jison produces&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-v&#39;</span><span class="p">,</span> <span class="s1">&#39;--version&#39;</span><span class="p">,</span>       <span class="s1">&#39;display CoffeeScript version&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s1">&#39;-h&#39;</span><span class="p">,</span> <span class="s1">&#39;--help&#39;</span><span class="p">,</span>          <span class="s1">&#39;display this help message&#39;</span><span class="p">]</span>
+<span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Top-level objects shared by all the functions.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">options: </span><span class="p">{}</span>
+<span class="nv">sources: </span><span class="p">[]</span>
+<span class="nv">option_parser: </span><span class="kc">null</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Run <code>coffee</code> by parsing passed options and determining what action to take.
+Many flags cause us to divert before compiling anything. Flags passed after
+<code>--</code> will be passed verbatim to your script as arguments in <code>process.argv</code></p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.run: </span><span class="o">-&gt;</span>
+  <span class="nx">parse_options</span><span class="p">()</span>
+  <span class="k">return</span> <span class="nx">usage</span><span class="p">()</span>                              <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">help</span>
+  <span class="k">return</span> <span class="nx">version</span><span class="p">()</span>                            <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">version</span>
+  <span class="k">return</span> <span class="nx">require</span> <span class="s1">&#39;repl&#39;</span>                       <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">interactive</span>
+  <span class="k">return</span> <span class="nx">compile_stdio</span><span class="p">()</span>                      <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">stdio</span>
+  <span class="k">return</span> <span class="nx">compile_script</span> <span class="s1">&#39;console&#39;</span><span class="p">,</span> <span class="nx">sources</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nb">eval</span>
+  <span class="k">return</span> <span class="nx">usage</span><span class="p">()</span>                              <span class="nx">unless</span> <span class="nx">sources</span><span class="p">.</span><span class="nx">length</span>
+  <span class="nv">separator: </span><span class="nx">sources</span><span class="p">.</span><span class="nx">indexOf</span> <span class="s1">&#39;--&#39;</span>
+  <span class="nv">flags: </span><span class="p">[]</span>
+  <span class="k">if</span> <span class="nx">separator</span> <span class="o">&gt;=</span> <span class="mi">0</span>
+    <span class="nv">flags: </span><span class="nx">sources</span><span class="p">[(</span><span class="nx">separator</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)...</span><span class="nx">sources</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span>
+    <span class="nv">sources: </span><span class="nx">sources</span><span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">separator</span><span class="p">]</span>
+  <span class="nv">process.ARGV: process.argv: </span><span class="nx">flags</span>
+  <span class="nx">watch_scripts</span><span class="p">()</span> <span class="k">if</span> <span class="nx">options</span><span class="p">.</span><span class="nx">watch</span>
+  <span class="nx">compile_scripts</span><span class="p">()</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Asynchronously read in each CoffeeScript in a list of source files and
+compile them.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">compile_scripts: </span><span class="o">-&gt;</span>
+  <span class="nv">compile: </span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">path</span><span class="p">.</span><span class="nx">exists</span> <span class="nx">source</span><span class="p">,</span> <span class="p">(</span><span class="nx">exists</span><span class="p">)</span> <span class="o">-&gt;</span>
+      <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;File not found: $source&quot;</span> <span class="nx">unless</span> <span class="nx">exists</span>
+      <span class="nx">fs</span><span class="p">.</span><span class="nx">readFile</span> <span class="nx">source</span><span class="p">,</span> <span class="p">(</span><span class="nx">err</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">compile_script</span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span>
+  <span class="nx">compile</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="k">for</span> <span class="nx">source</span> <span class="k">in</span> <span class="nx">sources</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Compile a single source script, containing the given code, according to the
+requested options. Both compile_scripts and watch_scripts share this method
+in common. If evaluating the script directly sets <code>__filename</code>, <code>__dirname</code>
+and <code>module.filename</code> to be correct relative to the script's path.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">compile_script: </span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">o: </span><span class="nx">options</span>
+  <span class="nv">code_opts: </span><span class="nx">compile_options</span> <span class="nx">source</span>
+  <span class="k">try</span>
+    <span class="k">if</span>      <span class="nx">o</span><span class="p">.</span><span class="nx">tokens</span>      <span class="k">then</span> <span class="nx">print_tokens</span> <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">tokens</span> <span class="nx">code</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">nodes</span>       <span class="k">then</span> <span class="nx">puts</span> <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">nodes</span><span class="p">(</span><span class="nx">code</span><span class="p">).</span><span class="nx">toString</span><span class="p">()</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">run</span>         <span class="k">then</span> <span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">code_opts</span>
+    <span class="k">else</span>
+      <span class="nv">js: </span><span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">code</span><span class="p">,</span> <span class="nx">code_opts</span>
+      <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">print</span>          <span class="k">then</span> <span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">write</span> <span class="nx">js</span>
+      <span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">compile</span>   <span class="k">then</span> <span class="nx">write_js</span> <span class="nx">source</span><span class="p">,</span> <span class="nx">js</span>
+      <span class="k">else</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">lint</span>      <span class="k">then</span> <span class="nx">lint</span> <span class="nx">js</span>
+  <span class="k">catch</span> <span class="nx">err</span>
+    <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">watch</span>            <span class="k">then</span> <span class="nx">puts</span> <span class="nx">err</span><span class="p">.</span><span class="nx">message</span> <span class="k">else</span> <span class="k">throw</span> <span class="nx">err</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Attach the appropriate listeners to compile scripts incoming over <strong>stdin</strong>,
+and write them back to <strong>stdout</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">compile_stdio: </span><span class="o">-&gt;</span>
+  <span class="nv">code: </span><span class="s1">&#39;&#39;</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">open</span><span class="p">()</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;data&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">code</span> <span class="o">+=</span> <span class="nx">string</span> <span class="k">if</span> <span class="nx">string</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;close&#39;</span><span class="p">,</span> <span class="o">-&gt;</span>
+    <span class="nx">compile_script</span> <span class="s1">&#39;stdio&#39;</span><span class="p">,</span> <span class="nx">code</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Watch a list of source CoffeeScript files using <code>fs.watchFile</code>, recompiling
+them every time the files are updated. May be used in combination with other
+options, such as <code>--lint</code> or <code>--print</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">watch_scripts: </span><span class="o">-&gt;</span>
+  <span class="nv">watch: </span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">fs</span><span class="p">.</span><span class="nx">watchFile</span> <span class="nx">source</span><span class="p">,</span> <span class="p">{</span><span class="nv">persistent: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">interval: </span><span class="mi">500</span><span class="p">},</span> <span class="p">(</span><span class="nx">curr</span><span class="p">,</span> <span class="nx">prev</span><span class="p">)</span> <span class="o">-&gt;</span>
+      <span class="k">return</span> <span class="k">if</span> <span class="nx">curr</span><span class="p">.</span><span class="nx">mtime</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">is</span> <span class="nx">prev</span><span class="p">.</span><span class="nx">mtime</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span>
+      <span class="nx">fs</span><span class="p">.</span><span class="nx">readFile</span> <span class="nx">source</span><span class="p">,</span> <span class="p">(</span><span class="nx">err</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">compile_script</span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span>
+  <span class="nx">watch</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="k">for</span> <span class="nx">source</span> <span class="k">in</span> <span class="nx">sources</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>Write out a JavaScript source file with the compiled code. By default, files
+are written out in <code>cwd</code> as <code>.js</code> files with the same name, but the output
+directory can be customized with <code>--output</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">write_js: </span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">js</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">filename: </span><span class="nx">path</span><span class="p">.</span><span class="nx">basename</span><span class="p">(</span><span class="nx">source</span><span class="p">,</span> <span class="nx">path</span><span class="p">.</span><span class="nx">extname</span><span class="p">(</span><span class="nx">source</span><span class="p">))</span> <span class="o">+</span> <span class="s1">&#39;.js&#39;</span>
+  <span class="nv">dir: </span>     <span class="nx">options</span><span class="p">.</span><span class="nx">output</span> <span class="o">or</span> <span class="nx">path</span><span class="p">.</span><span class="nx">dirname</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span>
+  <span class="nv">js_path: </span> <span class="nx">path</span><span class="p">.</span><span class="nx">join</span> <span class="nx">dir</span><span class="p">,</span> <span class="nx">filename</span>
+  <span class="nx">fs</span><span class="p">.</span><span class="nx">writeFile</span> <span class="nx">js_path</span><span class="p">,</span> <span class="nx">js</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p>Pipe compiled JS through JSLint (requires a working <code>jsl</code> command), printing
+any errors or warnings that arise.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">lint: </span><span class="p">(</span><span class="nx">js</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">jsl: </span><span class="nx">process</span><span class="p">.</span><span class="nx">createChildProcess</span><span class="p">(</span><span class="s1">&#39;jsl&#39;</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;-nologo&#39;</span><span class="p">,</span> <span class="s1">&#39;-stdin&#39;</span><span class="p">])</span>
+  <span class="nx">jsl</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;output&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">puts</span> <span class="nx">result</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/g</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">if</span> <span class="nx">result</span>
+  <span class="nx">jsl</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;error&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">puts</span> <span class="nx">result</span> <span class="k">if</span> <span class="nx">result</span>
+  <span class="nx">jsl</span><span class="p">.</span><span class="nx">write</span> <span class="nx">js</span>
+  <span class="nx">jsl</span><span class="p">.</span><span class="nx">close</span><span class="p">()</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>Pretty-print a stream of tokens.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">print_tokens: </span><span class="p">(</span><span class="nx">tokens</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">strings: </span><span class="k">for</span> <span class="nx">token</span> <span class="k">in</span> <span class="nx">tokens</span>
+    <span class="p">[</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">token</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">toString</span><span class="p">().</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/</span><span class="p">,</span> <span class="s1">&#39;\\n&#39;</span><span class="p">)]</span>
+    <span class="s2">&quot;[$tag $value]&quot;</span>
+  <span class="nx">puts</span> <span class="nx">strings</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39; &#39;</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <p>Use the <a href="optparse.html">OptionParser module</a> to extract all options from
+<code>process.argv</code> that are specified in <code>SWITCHES</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">parse_options: </span><span class="o">-&gt;</span>
+  <span class="nv">option_parser: </span><span class="k">new</span> <span class="nx">optparse</span><span class="p">.</span><span class="nx">OptionParser</span> <span class="nx">SWITCHES</span><span class="p">,</span> <span class="nx">BANNER</span>
+  <span class="nv">o: options: </span>   <span class="nx">option_parser</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">process</span><span class="p">.</span><span class="nx">argv</span><span class="p">)</span>
+  <span class="nv">options.run: </span>  <span class="o">not</span> <span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">compile</span> <span class="o">or</span> <span class="nx">o</span><span class="p">.</span><span class="nx">print</span> <span class="o">or</span> <span class="nx">o</span><span class="p">.</span><span class="nx">lint</span><span class="p">)</span>
+  <span class="nv">options.print: </span><span class="o">!!</span>  <span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">print</span> <span class="o">or</span> <span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nb">eval</span> <span class="o">or</span> <span class="nx">o</span><span class="p">.</span><span class="nx">stdio</span> <span class="o">and</span> <span class="nx">o</span><span class="p">.</span><span class="nx">compile</span><span class="p">))</span>
+  <span class="nv">sources: </span>      <span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">[</span><span class="mi">2</span><span class="p">...</span><span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-15">#</a>               </div>               <p>The compile-time options to pass to the CoffeeScript compiler.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">compile_options: </span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">o: </span><span class="p">{</span><span class="nv">source: </span><span class="nx">source</span><span class="p">}</span>
+  <span class="nx">o</span><span class="p">[</span><span class="s1">&#39;no_wrap&#39;</span><span class="p">]</span><span class="o">:</span> <span class="nx">options</span><span class="p">[</span><span class="s1">&#39;no-wrap&#39;</span><span class="p">]</span>
+  <span class="nx">o</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-16">#</a>               </div>               <p>Print the <code>--help</code> usage message and exit.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">usage: </span><span class="o">-&gt;</span>
+  <span class="nx">puts</span> <span class="nx">option_parser</span><span class="p">.</span><span class="nx">help</span><span class="p">()</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">exit</span> <span class="mi">0</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-17">#</a>               </div>               <p>Print the <code>--version</code> message and exit.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">version: </span><span class="o">-&gt;</span>
+  <span class="nx">puts</span> <span class="s2">&quot;CoffeeScript version ${CoffeeScript.VERSION}&quot;</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">exit</span> <span class="mi">0</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

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documentation/docs/grammar.html

@@ -0,0 +1,381 @@
+<!DOCTYPE html>  <html> <head>   <title>grammar.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               grammar.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>The CoffeeScript parser is generated by <a href="http://github.com/zaach/jison">Jison</a>
+from this grammar file. Jison is a bottom-up parser generator, similar in
+style to <a href="http://www.gnu.org/software/bison">Bison</a>, implemented in JavaScript.
+It can recognize <a href="http://en.wikipedia.org/wiki/LR_grammar">LALR(1), LR(0), SLR(1), and LR(1)</a>
+type grammars. To create the Jison parser, we list the pattern to match
+on the left-hand side, and the action to take (usually the creation of syntax
+tree nodes) on the right. As the parser runs, it
+shifts tokens from our token stream, from left to right, and
+<a href="http://en.wikipedia.org/wiki/Bottom-up_parsing">attempts to match</a>
+the token sequence against the rules below. When a match can be made, it
+reduces into the <a href="http://en.wikipedia.org/wiki/Terminal_and_nonterminal_symbols">nonterminal</a>
+(the enclosing name at the top), and we proceed from there.</p>
+
+<p>If you run the <code>cake build:parser</code> command, Jison constructs a parse table
+from our rules and saves it into <code>lib/parser.js</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>The only dependency is on the <strong>Jison.Parser</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">Parser: </span><span class="nx">require</span><span class="p">(</span><span class="s1">&#39;jison&#39;</span><span class="p">).</span><span class="nx">Parser</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <h2>Jison DSL</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Since we're going to be wrapped in a function by Jison in any case, if our
+action immediately returns a value, we can optimize by removing the function
+wrapper and just returning the value directly.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">unwrap: </span><span class="sr">/function\s*\(\)\s*\{\s*return\s*([\s\S]*);\s*\}/</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Our handy DSL for Jison grammar generation, thanks to
+<a href="http://github.com/creationix">Tim Caswell</a>. For every rule in the grammar,
+we pass the pattern-defining string, the action to run, and extra options,
+optionally. If no action is specified, we simply pass the value of the
+previous nonterminal.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">o: </span><span class="p">(</span><span class="nx">pattern_string</span><span class="p">,</span> <span class="nx">action</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="k">return</span> <span class="p">[</span><span class="nx">pattern_string</span><span class="p">,</span> <span class="s1">&#39;$$ = $1;&#39;</span><span class="p">,</span> <span class="nx">options</span><span class="p">]</span> <span class="nx">unless</span> <span class="nx">action</span>
+  <span class="nv">action: </span><span class="k">if</span> <span class="nv">match: </span><span class="p">(</span><span class="nx">action</span> <span class="o">+</span> <span class="s1">&#39;&#39;</span><span class="p">).</span><span class="nx">match</span><span class="p">(</span><span class="nx">unwrap</span><span class="p">)</span> <span class="k">then</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="s2">&quot;($action())&quot;</span>
+  <span class="p">[</span><span class="nx">pattern_string</span><span class="p">,</span> <span class="s2">&quot;$$ = $action;&quot;</span><span class="p">,</span> <span class="nx">options</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <h2>Grammatical Rules</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>In all of the rules that follow, you'll see the name of the nonterminal as
+the key to a list of alternative matches. With each match's action, the
+dollar-sign variables are provided by Jison as references to the value of
+their numeric position, so in this rule:</p>
+
+<pre><code>"Expression UNLESS Expression"
+</code></pre>
+
+<p><code>$1</code> would be the value of the first <code>Expression</code>, <code>$2</code> would be the token
+for the <code>UNLESS</code> terminal, and <code>$3</code> would be the value of the second
+<code>Expression</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">grammar: </span><span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>The <strong>Root</strong> is the top-level node in the syntax tree. Since we parse bottom-up,
+all parsing must end here.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Root: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
+    <span class="nx">o</span> <span class="s2">&quot;TERMINATOR&quot;</span><span class="p">,</span>                        <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expressions&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Block TERMINATOR&quot;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Any list of expressions or method body, seperated by line breaks or
+semicolons.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Expressions: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression&quot;</span><span class="p">,</span>                        <span class="o">-&gt;</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expressions TERMINATOR Expression&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expressions TERMINATOR&quot;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>All the different types of expressions in our language. The basic unit of
+CoffeeScript is the <strong>Expression</strong> -- you'll notice that there is no
+"statement" nonterminal. Expressions serve as the building blocks
+of many other rules, making them somewhat circular.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Expression: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Value&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Call&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Code&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Operation&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Assign&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;If&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Try&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Throw&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Return&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;While&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;For&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Switch&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Extends&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Class&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Splat&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Existence&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Comment&quot;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>A an indented block of expressions. Note that the <a href="rewriter.html">Rewriter</a>
+will convert some postfix forms into blocks for us, by adjusting the
+token stream.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Block: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;INDENT Expressions OUTDENT&quot;</span><span class="p">,</span>             <span class="o">-&gt;</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;INDENT OUTDENT&quot;</span><span class="p">,</span>                         <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p>A literal identifier, a variable name or property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Identifier: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;IDENTIFIER&quot;</span><span class="p">,</span>                             <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>Alphanumerics are separated from the other <strong>Literal</strong> matchers because
+they can also serve as keys in object literals.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">AlphaNumeric: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;NUMBER&quot;</span><span class="p">,</span>                                 <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+    <span class="nx">o</span> <span class="s2">&quot;STRING&quot;</span><span class="p">,</span>                                 <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <p>All of our immediate values. These can (in general), be passed straight
+through and printed to JavaScript.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Literal: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;AlphaNumeric&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;JS&quot;</span><span class="p">,</span>                                     <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+    <span class="nx">o</span> <span class="s2">&quot;REGEX&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+    <span class="nx">o</span> <span class="s2">&quot;BREAK&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+    <span class="nx">o</span> <span class="s2">&quot;CONTINUE&quot;</span><span class="p">,</span>                               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+    <span class="nx">o</span> <span class="s2">&quot;TRUE&quot;</span><span class="p">,</span>                                   <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
+    <span class="nx">o</span> <span class="s2">&quot;FALSE&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
+    <span class="nx">o</span> <span class="s2">&quot;YES&quot;</span><span class="p">,</span>                                    <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
+    <span class="nx">o</span> <span class="s2">&quot;NO&quot;</span><span class="p">,</span>                                     <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
+    <span class="nx">o</span> <span class="s2">&quot;ON&quot;</span><span class="p">,</span>                                     <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">true</span>
+    <span class="nx">o</span> <span class="s2">&quot;OFF&quot;</span><span class="p">,</span>                                    <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="kc">false</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-15">#</a>               </div>               <p>Assignment of a variable, property, or index to a value.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Assign: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Value ASSIGN Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-16">#</a>               </div>               <p>Assignment when it happens within an object literal. The difference from
+the ordinary <strong>Assign</strong> is that these allow numbers and strings as keys.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">AssignObj: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Identifier ASSIGN Expression&quot;</span><span class="p">,</span>           <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">&#39;object&#39;</span>
+    <span class="nx">o</span> <span class="s2">&quot;AlphaNumeric ASSIGN Expression&quot;</span><span class="p">,</span>         <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">$1</span><span class="p">),</span> <span class="nx">$3</span><span class="p">,</span> <span class="s1">&#39;object&#39;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Comment&quot;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-17">#</a>               </div>               <p>A return statement from a function body.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Return: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;RETURN Expression&quot;</span><span class="p">,</span>                      <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ReturnNode</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;RETURN&quot;</span><span class="p">,</span>                                 <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ReturnNode</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">&#39;null&#39;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-18">#</a>               </div>               <p>A comment. Because CoffeeScript passes comments through to JavaScript, we
+have to parse comments like any other construct, and identify all of the
+positions in which they can occur in the grammar.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Comment: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;COMMENT&quot;</span><span class="p">,</span>                                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CommentNode</span> <span class="nx">yytext</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-19">#</a>               </div>               <p><a href="http://jashkenas.github.com/coffee-script/#existence">The existential operator</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Existence: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression ?&quot;</span><span class="p">,</span>                           <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ExistenceNode</span> <span class="nx">$1</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-20">#</a>               </div>               <p>The <strong>Code</strong> node is the function literal. It's defined by an indented block
+of <strong>Expressions</strong> preceded by a function arrow, with an optional parameter
+list.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Code: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;PARAM_START ParamList PARAM_END FuncGlyph Block&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CodeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span><span class="p">,</span> <span class="nx">$4</span>
+    <span class="nx">o</span> <span class="s2">&quot;FuncGlyph Block&quot;</span><span class="p">,</span>                        <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CodeNode</span> <span class="p">[],</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$1</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-21">#</a>               </div>               <p>CoffeeScript has two different symbols for functions. <code>-&gt;</code> is for ordinary
+functions, and <code>=&gt;</code> is for functions bound to the current value of <em>this</em>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">FuncGlyph: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;-&gt;&quot;</span><span class="p">,</span>                                     <span class="o">-&gt;</span> <span class="s1">&#39;func&#39;</span>
+    <span class="nx">o</span> <span class="s2">&quot;=&gt;&quot;</span><span class="p">,</span>                                     <span class="o">-&gt;</span> <span class="s1">&#39;boundfunc&#39;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-22">#</a>               </div>               <p>The list of parameters that a function accepts can be of any length.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">ParamList: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span>                                       <span class="o">-&gt;</span> <span class="p">[]</span>
+    <span class="nx">o</span> <span class="s2">&quot;Param&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;ParamList , Param&quot;</span><span class="p">,</span>                      <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-23">#</a>               </div>               <p>A single parameter in a function definition can be ordinary, or a splat
+that hoovers up the remaining arguments.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Param: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;PARAM&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="nx">yytext</span>
+    <span class="nx">o</span> <span class="s2">&quot;Param . . .&quot;</span><span class="p">,</span>                            <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">SplatNode</span> <span class="nx">$1</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-24">#</a>               </div>               <p>A splat that occurs outside of a parameter list.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Splat: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression . . .&quot;</span><span class="p">,</span>                       <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">SplatNode</span> <span class="nx">$1</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-25">#</a>               </div>               <p>The types of things that can be treated as values -- assigned to, invoked
+as functions, indexed into, named as a class, etc.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Value: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Identifier&quot;</span><span class="p">,</span>                             <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
+    <span class="nx">o</span> <span class="s2">&quot;Literal&quot;</span><span class="p">,</span>                                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
+    <span class="nx">o</span> <span class="s2">&quot;Array&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
+    <span class="nx">o</span> <span class="s2">&quot;Object&quot;</span><span class="p">,</span>                                 <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
+    <span class="nx">o</span> <span class="s2">&quot;Parenthetical&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
+    <span class="nx">o</span> <span class="s2">&quot;Range&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span>
+    <span class="nx">o</span> <span class="s2">&quot;This&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Value Accessor&quot;</span><span class="p">,</span>                         <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;Invocation Accessor&quot;</span><span class="p">,</span>                    <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-26">#</a>               </div>               <p>The general group of accessors into an object, by property, by prototype
+or by array index or slice.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Accessor: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;PROPERTY_ACCESS Identifier&quot;</span><span class="p">,</span>             <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;PROTOTYPE_ACCESS Identifier&quot;</span><span class="p">,</span>            <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">&#39;prototype&#39;</span>
+    <span class="nx">o</span> <span class="s2">&quot;SOAK_ACCESS Identifier&quot;</span><span class="p">,</span>                 <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">AccessorNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">&#39;soak&#39;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Index&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Slice&quot;</span><span class="p">,</span>                                  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">SliceNode</span> <span class="nx">$1</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-27">#</a>               </div>               <p>Indexing into an object or array using bracket notation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Index: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;INDEX_START Expression INDEX_END&quot;</span><span class="p">,</span>       <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IndexNode</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;SOAKED_INDEX_START Expression SOAKED_INDEX_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IndexNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="s1">&#39;soak&#39;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-28">#</a>               </div>               <p>In CoffeeScript, an object literal is simply a list of assignments.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nb">Object</span><span class="o">:</span> <span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;{ AssignList }&quot;</span><span class="p">,</span>                         <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ObjectNode</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;{ IndentedAssignList }&quot;</span><span class="p">,</span>                 <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ObjectNode</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-29">#</a>               </div>               <p>Class definitions have optional bodies of prototype property assignments,
+and optional references to the superclass.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Class: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;CLASS Value&quot;</span><span class="p">,</span>                            <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;CLASS Value EXTENDS Value&quot;</span><span class="p">,</span>              <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span>
+    <span class="nx">o</span> <span class="s2">&quot;CLASS Value IndentedAssignList&quot;</span><span class="p">,</span>         <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;CLASS Value EXTENDS Value IndentedAssignList&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ClassNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$5</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-30">#</a>               </div>               <p>Assignment of properties within an object literal can be separated by
+comma, as in JavaScript, or simply by newline.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">AssignList: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span>                                       <span class="o">-&gt;</span> <span class="p">[]</span>
+    <span class="nx">o</span> <span class="s2">&quot;AssignObj&quot;</span><span class="p">,</span>                              <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;AssignList , AssignObj&quot;</span><span class="p">,</span>                 <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;AssignList TERMINATOR AssignObj&quot;</span><span class="p">,</span>        <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;AssignList , TERMINATOR AssignObj&quot;</span><span class="p">,</span>      <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-31">#</a>               </div>               <p>An <strong>AssignList</strong> within a block indentation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">IndentedAssignList: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;INDENT AssignList OUTDENT&quot;</span><span class="p">,</span>              <span class="o">-&gt;</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-32">#</a>               </div>               <p>The three flavors of function call: normal, object instantiation with <code>new</code>,
+and calling <code>super()</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Call: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Invocation&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;NEW Invocation&quot;</span><span class="p">,</span>                         <span class="o">-&gt;</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">new_instance</span><span class="p">()</span>
+    <span class="nx">o</span> <span class="s2">&quot;Super&quot;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-33">#</a>               </div>               <p>Extending an object by setting its prototype chain to reference a parent
+object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Extends: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Value EXTENDS Value&quot;</span><span class="p">,</span>                    <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ExtendsNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-34">#</a>               </div>               <p>Ordinary function invocation, or a chained series of calls.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Invocation: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Value Arguments&quot;</span><span class="p">,</span>                        <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;Invocation Arguments&quot;</span><span class="p">,</span>                   <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-35">#</a>               </div>               <p>The list of arguments to a function call.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Arguments: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;CALL_START ArgList CALL_END&quot;</span><span class="p">,</span>            <span class="o">-&gt;</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-36">#</a>               </div>               <p>Calling super.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Super: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;SUPER CALL_START ArgList CALL_END&quot;</span><span class="p">,</span>      <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">CallNode</span> <span class="s1">&#39;super&#39;</span><span class="p">,</span> <span class="nx">$3</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-37">#</a>               </div>               <p>A reference to the <em>this</em> current object, either naked or to a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">This: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;@&quot;</span><span class="p">,</span>                                      <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span> <span class="s1">&#39;this&#39;</span>
+    <span class="nx">o</span> <span class="s2">&quot;@ Identifier&quot;</span><span class="p">,</span>                           <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">$2</span><span class="p">)]</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-38">#</a>               </div>               <p>The CoffeeScript range literal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Range: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;[ Expression . . Expression ]&quot;</span><span class="p">,</span>          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span>
+    <span class="nx">o</span> <span class="s2">&quot;[ Expression . . . Expression ]&quot;</span><span class="p">,</span>        <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$6</span><span class="p">,</span> <span class="kc">true</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-39">#</a>               </div>               <p>The slice literal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Slice: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;INDEX_START Expression . . Expression INDEX_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$5</span>
+    <span class="nx">o</span> <span class="s2">&quot;INDEX_START Expression . . . Expression INDEX_END&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">RangeNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$6</span><span class="p">,</span> <span class="kc">true</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-40">#</a>               </div>               <p>The array literal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nb">Array</span><span class="o">:</span> <span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;[ ArgList ]&quot;</span><span class="p">,</span>                            <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ArrayNode</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-41">#</a>               </div>               <p>The <strong>ArgList</strong> is both the list of objects passed into a function call,
+as well as the contents of an array literal
+(i.e. comma-separated expressions). Newlines work as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">ArgList: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;&quot;</span><span class="p">,</span>                                       <span class="o">-&gt;</span> <span class="p">[]</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression&quot;</span><span class="p">,</span>                             <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;INDENT Expression&quot;</span><span class="p">,</span>                      <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$2</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;ArgList , Expression&quot;</span><span class="p">,</span>                   <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;ArgList TERMINATOR Expression&quot;</span><span class="p">,</span>          <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$3</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;ArgList , TERMINATOR Expression&quot;</span><span class="p">,</span>        <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;ArgList , INDENT Expression&quot;</span><span class="p">,</span>            <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span> <span class="p">[</span><span class="nx">$4</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;ArgList OUTDENT&quot;</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-42">#</a>               </div>               <p>Just simple, comma-separated, required arguments (no fancy syntax). We need
+this to be separate from the <strong>ArgList</strong> for use in <strong>Switch</strong> blocks, where
+having the newlines wouldn't make sense.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">SimpleArgs: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;SimpleArgs , Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span>
+      <span class="k">if</span> <span class="nx">$1</span> <span class="k">instanceof</span> <span class="nb">Array</span> <span class="k">then</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">concat</span><span class="p">([</span><span class="nx">$3</span><span class="p">])</span> <span class="k">else</span> <span class="p">[</span><span class="nx">$1</span><span class="p">].</span><span class="nx">concat</span><span class="p">([</span><span class="nx">$3</span><span class="p">])</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-43">#</a>               </div>               <p>The variants of <em>try/catch/finally</em> exception handling blocks.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Try: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;TRY Block Catch&quot;</span><span class="p">,</span>                        <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;TRY Block FINALLY Block&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">$4</span>
+    <span class="nx">o</span> <span class="s2">&quot;TRY Block Catch FINALLY Block&quot;</span><span class="p">,</span>          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">TryNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">$5</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-44">#</a>               </div>               <p>A catch clause names its error and runs a block of code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Catch: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;CATCH Identifier Block&quot;</span><span class="p">,</span>                 <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-45">#</a>               </div>               <p>Throw an exception object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Throw: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;THROW Expression&quot;</span><span class="p">,</span>                       <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ThrowNode</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-46">#</a>               </div>               <p>Parenthetical expressions. Note that the <strong>Parenthetical</strong> is a <strong>Value</strong>,
+not an <strong>Expression</strong>, so if you need to use an expression in a place
+where only values are accepted, wrapping it in parentheses will always do
+the trick.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Parenthetical: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;( Expression )&quot;</span><span class="p">,</span>                         <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ParentheticalNode</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-47">#</a>               </div>               <p>The condition portion of a while loop.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">WhileSource: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;WHILE Expression&quot;</span><span class="p">,</span>                       <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;WHILE Expression WHEN Expression&quot;</span><span class="p">,</span>       <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">WhileNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="p">{</span><span class="nx">filter</span> <span class="o">:</span> <span class="nx">$4</span><span class="p">}</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-48">#</a>               </div>               <p>The while loop can either be normal, with a block of expressions to execute,
+or postfix, with a single expression. There is no do..while.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">While: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;WhileSource Block&quot;</span><span class="p">,</span>                      <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">add_body</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression WhileSource&quot;</span><span class="p">,</span>                 <span class="o">-&gt;</span> <span class="nx">$2</span><span class="p">.</span><span class="nx">add_body</span> <span class="nx">$1</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-49">#</a>               </div>               <p>Array, object, and range comprehensions, at the most generic level.
+Comprehensions can either be normal, with a block of expressions to execute,
+or postfix, with a single expression.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">For: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression FOR ForVariables ForSource&quot;</span><span class="p">,</span>  <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ForNode</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$3</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;FOR ForVariables ForSource Block&quot;</span><span class="p">,</span>       <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">ForNode</span> <span class="nx">$4</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">$2</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">$2</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-50">#</a>               </div>               <p>An array or range comprehension has variables for the current element and
+(optional) reference to the current index. Or, <em>key, value</em>, in the case
+of object comprehensions.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">ForVariables: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;Identifier&quot;</span><span class="p">,</span>                             <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">]</span>
+    <span class="nx">o</span> <span class="s2">&quot;Identifier , Identifier&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="p">[</span><span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span><span class="p">]</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-51">#</a>               </div>               <p>The source of a comprehension is an array or object with an optional filter
+clause. If it's an array comprehension, you can also choose to step throug
+in fixed-size increments.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">ForSource: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;IN Expression&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="p">{</span><span class="nv">source: </span>  <span class="nx">$2</span><span class="p">}</span>
+    <span class="nx">o</span> <span class="s2">&quot;OF Expression&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="p">{</span><span class="nv">source: </span>  <span class="nx">$2</span><span class="p">,</span> <span class="nv">object: </span><span class="kc">true</span><span class="p">}</span>
+    <span class="nx">o</span> <span class="s2">&quot;ForSource WHEN Expression&quot;</span><span class="p">,</span>              <span class="o">-&gt;</span> <span class="nv">$1.filter: </span><span class="nx">$3</span><span class="p">;</span> <span class="nx">$1</span>
+    <span class="nx">o</span> <span class="s2">&quot;ForSource BY Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="nv">$1.step: </span>  <span class="nx">$3</span><span class="p">;</span> <span class="nx">$1</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-52">#</a>               </div>               <p>The CoffeeScript switch/when/else block replaces the JavaScript
+switch/case/default by compiling into an if-else chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Switch: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;SWITCH Expression INDENT Whens OUTDENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$4</span><span class="p">.</span><span class="nx">rewrite_condition</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;SWITCH Expression INDENT Whens ELSE Block OUTDENT&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="nx">$4</span><span class="p">.</span><span class="nx">rewrite_condition</span><span class="p">(</span><span class="nx">$2</span><span class="p">).</span><span class="nx">add_else</span> <span class="nx">$6</span><span class="p">,</span> <span class="kc">true</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-53">#</a>               </div>               <p>The inner list of whens is left recursive. At code-generation time, the
+IfNode will rewrite them into a proper chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Whens: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;When&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Whens When&quot;</span><span class="p">,</span>                             <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">push</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-54">#</a>               </div>               <p>An individual <strong>When</strong> clause, with action.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">When: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;LEADING_WHEN SimpleArgs Block&quot;</span><span class="p">,</span>          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">}</span>
+    <span class="nx">o</span> <span class="s2">&quot;LEADING_WHEN SimpleArgs Block TERMINATOR&quot;</span><span class="p">,</span> <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">}</span>
+    <span class="nx">o</span> <span class="s2">&quot;Comment TERMINATOR When&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="nv">$3.comment: </span><span class="nx">$1</span><span class="p">;</span> <span class="nx">$3</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-55">#</a>               </div>               <p>The most basic form of <em>if</em> is a condition and an action. The following
+if-related rules are broken up along these lines in order to avoid
+ambiguity.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">IfStart: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;IF Expression Block&quot;</span><span class="p">,</span>                    <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$2</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;IfStart ElsIf&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">add_else</span> <span class="nx">$2</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-56">#</a>               </div>               <p>An <strong>IfStart</strong> can optionally be followed by an else block.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">IfBlock: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;IfStart&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;IfStart ELSE Block&quot;</span><span class="p">,</span>                     <span class="o">-&gt;</span> <span class="nx">$1</span><span class="p">.</span><span class="nx">add_else</span> <span class="nx">$3</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-57">#</a>               </div>               <p>An <em>else if</em> continuation of the <em>if</em> expression.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">ElsIf: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;ELSE IF Expression Block&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="p">(</span><span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="nx">$3</span><span class="p">,</span> <span class="nx">$4</span><span class="p">)).</span><span class="nx">force_statement</span><span class="p">()</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-58">#</a>               </div>               <p>The full complement of <em>if</em> expressions, including postfix one-liner
+<em>if</em> and <em>unless</em>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">If: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;IfBlock&quot;</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression IF Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">}</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression UNLESS Expression&quot;</span><span class="p">,</span>           <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">IfNode</span> <span class="nx">$3</span><span class="p">,</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">$1</span><span class="p">]),</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">invert: </span><span class="kc">true</span><span class="p">}</span>
+  <span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-59">#</a>               </div>               <p>Arithmetic and logical operators, working on one or more operands.
+Here they are grouped by order of precedence. The actual precedence rules
+are defined at the bottom of the page. It would be shorter if we could
+combine most of these rules into a single generic <em>Operand OpSymbol Operand</em>
+-type rule, but in order to make the precedence binding possible, separate
+rules are necessary.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">Operation: </span><span class="p">[</span>
+    <span class="nx">o</span> <span class="s2">&quot;! Expression&quot;</span><span class="p">,</span>                           <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;!! Expression&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;!!&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span><span class="p">(</span><span class="s2">&quot;- Expression&quot;</span><span class="p">,</span>                           <span class="p">(</span><span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;-&#39;</span><span class="p">,</span> <span class="nx">$2</span><span class="p">)),</span> <span class="p">{</span><span class="nv">prec: </span><span class="s1">&#39;UMINUS&#39;</span><span class="p">})</span>
+    <span class="nx">o</span><span class="p">(</span><span class="s2">&quot;+ Expression&quot;</span><span class="p">,</span>                           <span class="p">(</span><span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="nx">$2</span><span class="p">)),</span> <span class="p">{</span><span class="nv">prec: </span><span class="s1">&#39;UPLUS&#39;</span><span class="p">})</span>
+    <span class="nx">o</span> <span class="s2">&quot;NOT Expression&quot;</span><span class="p">,</span>                         <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;not&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;~ Expression&quot;</span><span class="p">,</span>                           <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;~&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;-- Expression&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;--&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;++ Expression&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;DELETE Expression&quot;</span><span class="p">,</span>                      <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;delete&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;TYPEOF Expression&quot;</span><span class="p">,</span>                      <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;typeof&#39;</span><span class="p">,</span> <span class="nx">$2</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression --&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;--&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression ++&quot;</span><span class="p">,</span>                          <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="kc">true</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression * Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;*&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression / Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;/&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression % Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;%&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression + Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression - Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;-&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression &lt;&lt; Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&lt;&lt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression &gt;&gt; Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;&gt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression &gt;&gt;&gt; Expression&quot;</span><span class="p">,</span>              <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;&gt;&gt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression &amp; Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&amp;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression | Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;|&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression ^ Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;^&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression &lt;= Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&lt;=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression &lt; Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&lt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression &gt; Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression &gt;= Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&gt;=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression == Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;==&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression != Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;!=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression IS Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;is&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression ISNT Expression&quot;</span><span class="p">,</span>             <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;isnt&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression &amp;&amp; Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&amp;&amp;&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression || Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;||&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression AND Expression&quot;</span><span class="p">,</span>              <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;and&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression OR Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;or&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression ? Expression&quot;</span><span class="p">,</span>                <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;?&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression -= Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;-=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression += Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;+=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression /= Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;/=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression *= Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;*=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression %= Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;%=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression ||= Expression&quot;</span><span class="p">,</span>              <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;||=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression &amp;&amp;= Expression&quot;</span><span class="p">,</span>              <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;&amp;&amp;=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression ?= Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;?=&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+
+    <span class="nx">o</span> <span class="s2">&quot;Expression INSTANCEOF Expression&quot;</span><span class="p">,</span>       <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;instanceof&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+    <span class="nx">o</span> <span class="s2">&quot;Expression IN Expression&quot;</span><span class="p">,</span>               <span class="o">-&gt;</span> <span class="k">new</span> <span class="nx">OpNode</span> <span class="s1">&#39;in&#39;</span><span class="p">,</span> <span class="nx">$1</span><span class="p">,</span> <span class="nx">$3</span>
+  <span class="p">]</span>
+
+<span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-60">#</a>               </div>               <h2>Precedence</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-61">#</a>               </div>               <p>Operators at the top of this list have higher precedence than the ones lower
+down. Following these rules is what makes <code>2 + 3 * 4</code> parse as:</p>
+
+<pre><code>2 + (3 * 4)
+</code></pre>
+
+<p>And not:</p>
+
+<pre><code>(2 + 3) * 4
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">operators: </span><span class="p">[</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;?&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;nonassoc&quot;</span><span class="p">,</span>  <span class="s1">&#39;UMINUS&#39;</span><span class="p">,</span> <span class="s1">&#39;UPLUS&#39;</span><span class="p">,</span> <span class="s1">&#39;NOT&#39;</span><span class="p">,</span> <span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="s1">&#39;!!&#39;</span><span class="p">,</span> <span class="s1">&#39;~&#39;</span><span class="p">,</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="s1">&#39;--&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;*&#39;</span><span class="p">,</span> <span class="s1">&#39;/&#39;</span><span class="p">,</span> <span class="s1">&#39;%&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="s1">&#39;-&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;&lt;&lt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&gt;&gt;&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;&amp;&#39;</span><span class="p">,</span> <span class="s1">&#39;|&#39;</span><span class="p">,</span> <span class="s1">&#39;^&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;&lt;=&#39;</span><span class="p">,</span> <span class="s1">&#39;&lt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;=&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span>     <span class="s1">&#39;DELETE&#39;</span><span class="p">,</span> <span class="s1">&#39;INSTANCEOF&#39;</span><span class="p">,</span> <span class="s1">&#39;TYPEOF&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;==&#39;</span><span class="p">,</span> <span class="s1">&#39;!=&#39;</span><span class="p">,</span> <span class="s1">&#39;IS&#39;</span><span class="p">,</span> <span class="s1">&#39;ISNT&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;&amp;&amp;&#39;</span><span class="p">,</span> <span class="s1">&#39;||&#39;</span><span class="p">,</span> <span class="s1">&#39;AND&#39;</span><span class="p">,</span> <span class="s1">&#39;OR&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span>     <span class="s1">&#39;-=&#39;</span><span class="p">,</span> <span class="s1">&#39;+=&#39;</span><span class="p">,</span> <span class="s1">&#39;/=&#39;</span><span class="p">,</span> <span class="s1">&#39;*=&#39;</span><span class="p">,</span> <span class="s1">&#39;%=&#39;</span><span class="p">,</span> <span class="s1">&#39;||=&#39;</span><span class="p">,</span> <span class="s1">&#39;&amp;&amp;=&#39;</span><span class="p">,</span> <span class="s1">&#39;?=&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;.&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span>     <span class="s1">&#39;INDENT&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;OUTDENT&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span>     <span class="s1">&#39;WHEN&#39;</span><span class="p">,</span> <span class="s1">&#39;LEADING_WHEN&#39;</span><span class="p">,</span> <span class="s1">&#39;IN&#39;</span><span class="p">,</span> <span class="s1">&#39;OF&#39;</span><span class="p">,</span> <span class="s1">&#39;BY&#39;</span><span class="p">,</span> <span class="s1">&#39;THROW&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span>     <span class="s1">&#39;FOR&#39;</span><span class="p">,</span> <span class="s1">&#39;NEW&#39;</span><span class="p">,</span> <span class="s1">&#39;SUPER&#39;</span><span class="p">,</span> <span class="s1">&#39;CLASS&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;left&quot;</span><span class="p">,</span>      <span class="s1">&#39;EXTENDS&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span>     <span class="s1">&#39;ASSIGN&#39;</span><span class="p">,</span> <span class="s1">&#39;RETURN&#39;</span><span class="p">]</span>
+  <span class="p">[</span><span class="s2">&quot;right&quot;</span><span class="p">,</span>     <span class="s1">&#39;-&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;=&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;UNLESS&#39;</span><span class="p">,</span> <span class="s1">&#39;IF&#39;</span><span class="p">,</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s1">&#39;WHILE&#39;</span><span class="p">]</span>
+<span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-62">#</a>               </div>               <h2>Wrapping Up</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-63">#</a>               </div>               <p>Finally, now what we have our <strong>grammar</strong> and our <strong>operators</strong>, we can create
+our <strong>Jison.Parser</strong>. We do this by processing all of our rules, recording all
+terminals (every symbol which does not appear as the name of a rule above)
+as "tokens".</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">tokens: </span><span class="p">[]</span>
+<span class="k">for</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">alternatives</span> <span class="k">of</span> <span class="nx">grammar</span>
+  <span class="nx">grammar</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="k">for</span> <span class="nx">alt</span> <span class="k">in</span> <span class="nx">alternatives</span>
+    <span class="k">for</span> <span class="nx">token</span> <span class="k">in</span> <span class="nx">alt</span><span class="p">[</span><span class="mi">0</span><span class="p">].</span><span class="nx">split</span> <span class="s1">&#39; &#39;</span>
+      <span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="nx">token</span> <span class="nx">unless</span> <span class="nx">grammar</span><span class="p">[</span><span class="nx">token</span><span class="p">]</span>
+    <span class="nx">alt</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;return ${alt[1]}&quot;</span> <span class="k">if</span> <span class="nx">name</span> <span class="o">is</span> <span class="s1">&#39;Root&#39;</span>
+    <span class="nx">alt</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-64">#</a>               </div>               <p>Initialize the <strong>Parser</strong> with our list of terminal <strong>tokens</strong>, our <strong>grammar</strong>
+rules, and the name of the root. Reverse the operators because Jison orders
+precedence from low to high, and we have it high to low
+(as in <a href="http://dinosaur.compilertools.net/yacc/index.html">Yacc</a>).</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.parser: </span><span class="k">new</span> <span class="nx">Parser</span> <span class="p">{</span>
+  <span class="nv">tokens: </span>      <span class="nx">tokens</span><span class="p">.</span><span class="nx">join</span> <span class="s1">&#39; &#39;</span>
+  <span class="nv">bnf: </span>         <span class="nx">grammar</span>
+  <span class="nv">operators: </span>   <span class="nx">operators</span><span class="p">.</span><span class="nx">reverse</span><span class="p">()</span>
+  <span class="nv">startSymbol: </span> <span class="s1">&#39;Root&#39;</span>
+<span class="p">}</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/lexer.html

@@ -0,0 +1,359 @@
+<!DOCTYPE html>  <html> <head>   <title>lexer.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               lexer.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>The CoffeeScript Lexer. Uses a series of token-matching regexes to attempt
+matches against the beginning of the source code. When a match is found,
+a token is produced, we consume the match, and start again. Tokens are in the
+form:</p>
+
+<pre><code>[tag, value, line_number]
+</code></pre>
+
+<p>Which is a format that can be fed directly into <a href="http://github.com/zaach/jison">Jison</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>Set up the Lexer for both Node.js and the browser, depending on where we are.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="k">if</span> <span class="nx">process</span><span class="o">?</span>
+  <span class="nv">Rewriter: </span><span class="nx">require</span><span class="p">(</span><span class="s1">&#39;./rewriter&#39;</span><span class="p">).</span><span class="nx">Rewriter</span>
+<span class="k">else</span>
+  <span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span>
+  <span class="nv">Rewriter: </span><span class="k">this</span><span class="p">.</span><span class="nx">Rewriter</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <h2>The Lexer Class</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>The Lexer class reads a stream of CoffeeScript and divvys it up into tagged
+tokens. Some potential ambiguity in the grammar has been avoided by
+pushing some extra smarts into the Lexer.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.Lexer: </span><span class="nx">class</span> <span class="nx">Lexer</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p><strong>tokenize</strong> is the Lexer's main method. Scan by attempting to match tokens
+one at a time, using a regular expression anchored at the start of the
+remaining code, or a custom recursive token-matching method
+(for interpolations). When the next token has been recorded, we move forward
+within the code past the token, and begin again.</p>
+
+<p>Each tokenizing method is responsible for incrementing <code>@i</code> by the number of
+characters it has consumed. <code>@i</code> can be thought of as our finger on the page
+of source.</p>
+
+<p>Before returning the token stream, run it through the <a href="rewriter.html">Rewriter</a>
+unless explicitly asked not to.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">tokenize: </span><span class="p">(</span><span class="nx">code</span><span class="p">,</span> <span class="nx">options</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">o</span>        <span class="o">:</span> <span class="nx">options</span> <span class="o">or</span> <span class="p">{}</span>
+    <span class="err">@</span><span class="nx">code</span>    <span class="o">:</span> <span class="nx">code</span>         <span class="c1"># The remainder of the source code.</span>
+    <span class="err">@</span><span class="nx">i</span>       <span class="o">:</span> <span class="mi">0</span>            <span class="c1"># Current character position we&#39;re parsing.</span>
+    <span class="err">@</span><span class="nx">line</span>    <span class="o">:</span> <span class="nx">o</span><span class="p">.</span><span class="nx">line</span> <span class="o">or</span> <span class="mi">0</span>  <span class="c1"># The current line.</span>
+    <span class="err">@</span><span class="nx">indent</span>  <span class="o">:</span> <span class="mi">0</span>            <span class="c1"># The current indentation level.</span>
+    <span class="err">@</span><span class="nx">indents</span> <span class="o">:</span> <span class="p">[]</span>           <span class="c1"># The stack of all current indentation levels.</span>
+    <span class="err">@</span><span class="nx">tokens</span>  <span class="o">:</span> <span class="p">[]</span>           <span class="c1"># Stream of parsed tokens in the form [&#39;TYPE&#39;, value, line]</span>
+    <span class="k">while</span> <span class="err">@</span><span class="nx">i</span> <span class="o">&lt;</span> <span class="err">@</span><span class="nx">code</span><span class="p">.</span><span class="nx">length</span>
+      <span class="err">@</span><span class="nv">chunk: </span><span class="err">@</span><span class="nx">code</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="err">@</span><span class="nx">i</span><span class="p">)</span>
+      <span class="err">@</span><span class="nx">extract_next_token</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">close_indentation</span><span class="p">()</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">tokens</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">rewrite</span> <span class="o">is</span> <span class="kc">off</span>
+    <span class="p">(</span><span class="k">new</span> <span class="nx">Rewriter</span><span class="p">()).</span><span class="nx">rewrite</span> <span class="err">@</span><span class="nx">tokens</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>At every position, run through this list of attempted matches,
+short-circuiting if any of them succeed. Their order determines precedence:
+<code>@literal_token</code> is the fallback catch-all.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">extract_next_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">identifier_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">number_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">heredoc_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">regex_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">comment_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">line_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">whitespace_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">js_token</span><span class="p">()</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">string_token</span><span class="p">()</span>
+    <span class="k">return</span>    <span class="err">@</span><span class="nx">literal_token</span><span class="p">()</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <h2>Tokenizers</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Matches identifying literals: variables, keywords, method names, etc.
+Check to ensure that JavaScript reserved words aren't being used as
+identifiers. Because CoffeeScript reserves a handful of keywords that are
+allowed in JavaScript, we're careful not to tag them as keywords when
+referenced as property names here, so you can still do <code>jQuery.is()</code> even
+though <code>is</code> means <code>===</code> otherwise.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">identifier_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">id: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">IDENTIFIER</span><span class="p">,</span> <span class="mi">1</span>
+    <span class="err">@</span><span class="nx">name_access_type</span><span class="p">()</span>
+    <span class="nv">tag: </span><span class="s1">&#39;IDENTIFIER&#39;</span>
+    <span class="nv">tag: </span><span class="nx">id</span><span class="p">.</span><span class="nx">toUpperCase</span><span class="p">()</span> <span class="k">if</span> <span class="nx">include</span><span class="p">(</span><span class="nx">KEYWORDS</span><span class="p">,</span> <span class="nx">id</span><span class="p">)</span> <span class="o">and</span>
+      <span class="o">not</span> <span class="p">(</span><span class="nx">include</span><span class="p">(</span><span class="nx">ACCESSORS</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">prev</span><span class="p">().</span><span class="nx">spaced</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">identifier_error</span> <span class="nx">id</span>  <span class="k">if</span> <span class="nx">include</span> <span class="nx">RESERVED</span><span class="p">,</span> <span class="nx">id</span>
+    <span class="nv">tag: </span><span class="s1">&#39;LEADING_WHEN&#39;</span>   <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;WHEN&#39;</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">BEFORE_WHEN</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">token</span><span class="p">(</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">id</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">id</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Matches numbers, including decimals, hex, and exponential notation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">number_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">number: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">NUMBER</span><span class="p">,</span> <span class="mi">1</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;NUMBER&#39;</span><span class="p">,</span> <span class="nx">number</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">number</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Matches strings, including multi-line strings. Ensures that quotation marks
+are balanced within the string's contents, and within nested interpolations.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">string_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nx">starts</span><span class="p">(</span><span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="s1">&#39;&quot;&#39;</span><span class="p">)</span> <span class="o">or</span> <span class="nx">starts</span><span class="p">(</span><span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
+    <span class="nv">string: </span><span class="err">@</span><span class="nx">balanced_token</span> <span class="p">[</span><span class="s1">&#39;&quot;&#39;</span><span class="p">,</span> <span class="s1">&#39;&quot;&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;${&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">]</span>
+    <span class="nv">string: </span><span class="err">@</span><span class="nx">balanced_token</span> <span class="p">[</span><span class="s2">&quot;&#39;&quot;</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">]</span> <span class="nx">unless</span> <span class="nx">string</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nx">string</span>
+    <span class="err">@</span><span class="nx">interpolate_string</span> <span class="nx">string</span><span class="p">.</span><span class="nx">replace</span> <span class="nx">STRING_NEWLINES</span><span class="p">,</span> <span class="s2">&quot; \\\n&quot;</span>
+    <span class="err">@</span><span class="nx">line</span> <span class="o">+=</span> <span class="nx">count</span> <span class="nx">string</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">string</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>Matches heredocs, adjusting indentation to the correct level, as heredocs
+preserve whitespace, but ignore indentation to the left.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">heredoc_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nx">match</span> <span class="o">=</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">HEREDOC</span><span class="p">)</span>
+    <span class="nv">doc: </span><span class="err">@</span><span class="nx">sanitize_heredoc</span> <span class="nx">match</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">or</span> <span class="nx">match</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;\&quot;$doc\&quot;&quot;</span>
+    <span class="err">@</span><span class="nx">line</span> <span class="o">+=</span> <span class="nx">count</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="s2">&quot;\n&quot;</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p>Matches JavaScript interpolated directly into the source via backticks.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">js_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nx">starts</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="s1">&#39;`&#39;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">script: </span><span class="err">@</span><span class="nx">balanced_token</span> <span class="p">[</span><span class="s1">&#39;`&#39;</span><span class="p">,</span> <span class="s1">&#39;`&#39;</span><span class="p">]</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;JS&#39;</span><span class="p">,</span> <span class="nx">script</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">JS_CLEANER</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">script</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>Matches regular expression literals. Lexing regular expressions is difficult
+to distinguish from division, so we borrow some basic heuristics from
+JavaScript and Ruby.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">regex_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">regex: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">REGEX</span><span class="p">,</span> <span class="mi">1</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">NOT_REGEX</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;REGEX&#39;</span><span class="p">,</span> <span class="nx">regex</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">regex</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <p>Matches a token in which which the passed delimiter pairs must be correctly
+balanced (ie. strings, JS literals).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">balanced_token: </span><span class="p">(</span><span class="nx">delimited</span><span class="p">...)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">balanced_string</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">,</span> <span class="nx">delimited</span><span class="p">...</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-15">#</a>               </div>               <p>Matches and conumes comments. We pass through comments into JavaScript,
+so they're treated as real tokens, like any other part of the language.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">comment_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">comment: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">COMMENT</span><span class="p">,</span> <span class="mi">1</span>
+    <span class="err">@</span><span class="nx">line</span> <span class="o">+=</span> <span class="p">(</span><span class="nx">comment</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">)</span> <span class="o">or</span> <span class="p">[]).</span><span class="nx">length</span>
+    <span class="nv">lines: </span><span class="nx">comment</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">COMMENT_CLEANER</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">).</span><span class="nx">split</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;COMMENT&#39;</span><span class="p">,</span> <span class="nx">compact</span> <span class="nx">lines</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">comment</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-16">#</a>               </div>               <p>Matches newlines, indents, and outdents, and determines which is which.
+If we can detect that the current line is continued onto the the next line,
+then the newline is suppressed:</p>
+
+<pre><code>elements
+  .each( ... )
+  .map( ... )
+</code></pre>
+
+<p>Keeps track of the level of indentation, because a single outdent token
+can close multiple indents, so we need to know how far in we happen to be.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">line_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">indent: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">MULTI_DENT</span><span class="p">,</span> <span class="mi">1</span>
+    <span class="err">@</span><span class="nx">line</span> <span class="o">+=</span> <span class="nx">indent</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">).</span><span class="nx">length</span>
+    <span class="err">@</span><span class="nx">i</span>    <span class="o">+=</span> <span class="nx">indent</span><span class="p">.</span><span class="nx">length</span>
+    <span class="nv">prev: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
+    <span class="nv">size: </span><span class="nx">indent</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LAST_DENTS</span><span class="p">).</span><span class="nx">reverse</span><span class="p">()[</span><span class="mi">0</span><span class="p">].</span><span class="nx">match</span><span class="p">(</span><span class="nx">LAST_DENT</span><span class="p">)[</span><span class="mi">1</span><span class="p">].</span><span class="nx">length</span>
+    <span class="nv">next_character: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">MULTI_DENT</span><span class="p">)[</span><span class="mi">4</span><span class="p">]</span>
+    <span class="nv">no_newlines: </span><span class="nx">next_character</span> <span class="o">is</span> <span class="s1">&#39;.&#39;</span> <span class="o">or</span> <span class="p">(</span><span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">value</span><span class="p">().</span><span class="nx">match</span><span class="p">(</span><span class="nx">NO_NEWLINE</span><span class="p">)</span> <span class="o">and</span>
+      <span class="nx">prev</span> <span class="o">and</span> <span class="p">(</span><span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;.&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">value</span><span class="p">().</span><span class="nx">match</span><span class="p">(</span><span class="nx">CODE</span><span class="p">))</span>
+    <span class="k">if</span> <span class="nx">size</span> <span class="o">is</span> <span class="err">@</span><span class="nx">indent</span>
+      <span class="k">return</span> <span class="err">@</span><span class="nx">suppress_newlines</span><span class="p">()</span> <span class="k">if</span> <span class="nx">no_newlines</span>
+      <span class="k">return</span> <span class="err">@</span><span class="nx">newline_token</span><span class="p">(</span><span class="nx">indent</span><span class="p">)</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="nx">size</span> <span class="o">&gt;</span> <span class="err">@</span><span class="nx">indent</span>
+      <span class="k">return</span> <span class="err">@</span><span class="nx">suppress_newlines</span><span class="p">()</span> <span class="k">if</span> <span class="nx">no_newlines</span>
+      <span class="nv">diff: </span><span class="nx">size</span> <span class="o">-</span> <span class="err">@</span><span class="nx">indent</span>
+      <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="nx">diff</span>
+      <span class="err">@</span><span class="nx">indents</span><span class="p">.</span><span class="nx">push</span> <span class="nx">diff</span>
+    <span class="k">else</span>
+      <span class="err">@</span><span class="nx">outdent_token</span> <span class="err">@</span><span class="nx">indent</span> <span class="o">-</span> <span class="nx">size</span><span class="p">,</span> <span class="nx">no_newlines</span>
+    <span class="err">@</span><span class="nv">indent: </span><span class="nx">size</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-17">#</a>               </div>               <p>Record an outdent token or multiple tokens, if we happen to be moving back
+inwards past several recorded indents.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">outdent_token: </span><span class="p">(</span><span class="nx">move_out</span><span class="p">,</span> <span class="nx">no_newlines</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">while</span> <span class="nx">move_out</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="o">and</span> <span class="err">@</span><span class="nx">indents</span><span class="p">.</span><span class="nx">length</span>
+      <span class="nv">last_indent: </span><span class="err">@</span><span class="nx">indents</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+      <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="nx">last_indent</span>
+      <span class="nx">move_out</span> <span class="o">-=</span> <span class="nx">last_indent</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span> <span class="o">or</span> <span class="nx">no_newlines</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-18">#</a>               </div>               <p>Matches and consumes non-meaningful whitespace. Tag the previous token
+as being "spaced", because there are some cases where it makes a difference.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">whitespace_token: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">space: </span><span class="err">@</span><span class="nx">match</span> <span class="nx">WHITESPACE</span><span class="p">,</span> <span class="mi">1</span>
+    <span class="nv">prev: </span><span class="err">@</span><span class="nx">prev</span><span class="p">()</span>
+    <span class="nv">prev.spaced: </span><span class="kc">true</span> <span class="k">if</span> <span class="nx">prev</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">space</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-19">#</a>               </div>               <p>Generate a newline token. Consecutive newlines get merged together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">newline_token: </span><span class="p">(</span><span class="nx">newlines</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-20">#</a>               </div>               <p>Use a <code>\</code> at a line-ending to suppress the newline.
+The slash is removed here once its job is done.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">suppress_newlines: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span> <span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">is</span> <span class="s2">&quot;\\&quot;</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-21">#</a>               </div>               <p>We treat all other single characters as a token. Eg.: <code>( ) , . !</code>
+Multi-character operators are also literal tokens, so that Jison can assign
+the proper order of operations. There are some symbols that we tag specially
+here. <code>;</code> and newlines are both treated as a <code>TERMINATOR</code>, we distinguish
+parentheses that indicate a method call from regular parentheses, and so on.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">literal_token: </span><span class="o">-&gt;</span>
+    <span class="nv">match: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">OPERATOR</span><span class="p">)</span>
+    <span class="nv">value: </span><span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+    <span class="err">@</span><span class="nx">tag_parameters</span><span class="p">()</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">and</span> <span class="nx">value</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">CODE</span><span class="p">)</span>
+    <span class="nx">value</span> <span class="o">||=</span> <span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
+    <span class="nv">not_spaced: </span><span class="o">not</span> <span class="err">@</span><span class="nx">prev</span><span class="p">()</span> <span class="o">or</span> <span class="o">not</span> <span class="err">@</span><span class="nx">prev</span><span class="p">().</span><span class="nx">spaced</span>
+    <span class="nv">tag: </span><span class="nx">value</span>
+    <span class="k">if</span> <span class="nx">value</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">ASSIGNMENT</span><span class="p">)</span>
+      <span class="nv">tag: </span><span class="s1">&#39;ASSIGN&#39;</span>
+      <span class="err">@</span><span class="nx">assignment_error</span><span class="p">()</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">JS_FORBIDDEN</span><span class="p">,</span> <span class="err">@</span><span class="nx">value</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;;&#39;</span>
+      <span class="nv">tag: </span><span class="s1">&#39;TERMINATOR&#39;</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;[&#39;</span> <span class="o">and</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;?&#39;</span> <span class="o">and</span> <span class="nx">not_spaced</span>
+      <span class="nv">tag: </span><span class="s1">&#39;SOAKED_INDEX_START&#39;</span>
+      <span class="err">@</span><span class="nv">soaked_index: </span><span class="kc">true</span>
+      <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;]&#39;</span> <span class="o">and</span> <span class="err">@</span><span class="nx">soaked_index</span>
+      <span class="nv">tag: </span><span class="s1">&#39;SOAKED_INDEX_END&#39;</span>
+      <span class="err">@</span><span class="nv">soaked_index: </span><span class="kc">false</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="nx">include</span><span class="p">(</span><span class="nx">CALLABLE</span><span class="p">,</span> <span class="err">@</span><span class="nx">tag</span><span class="p">())</span> <span class="o">and</span> <span class="nx">not_spaced</span>
+      <span class="nv">tag: </span><span class="s1">&#39;CALL_START&#39;</span>  <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;(&#39;</span>
+      <span class="nv">tag: </span><span class="s1">&#39;INDEX_START&#39;</span> <span class="k">if</span> <span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;[&#39;</span>
+    <span class="err">@</span><span class="nx">token</span> <span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span>
+    <span class="err">@</span><span class="nx">i</span> <span class="o">+=</span> <span class="nx">value</span><span class="p">.</span><span class="nx">length</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-22">#</a>               </div>               <h2>Token Manipulators</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-23">#</a>               </div>               <p>As we consume a new <code>IDENTIFIER</code>, look at the previous token to determine
+if it's a special kind of accessor.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">name_access_type: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;PROTOTYPE_ACCESS&#39;</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;::&#39;</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">()</span> <span class="o">is</span> <span class="s1">&#39;.&#39;</span> <span class="o">and</span> <span class="o">not</span> <span class="p">(</span><span class="err">@</span><span class="nx">value</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;.&#39;</span><span class="p">)</span>
+      <span class="k">if</span> <span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;?&#39;</span>
+        <span class="err">@</span><span class="nx">tag</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;SOAK_ACCESS&#39;</span><span class="p">)</span>
+        <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="o">-</span><span class="mi">2</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
+      <span class="k">else</span>
+        <span class="err">@</span><span class="nx">tag</span> <span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;PROPERTY_ACCESS&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-24">#</a>               </div>               <p>Sanitize a heredoc by escaping internal double quotes and erasing all
+external indentation on the left-hand side.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">sanitize_heredoc: </span><span class="p">(</span><span class="nx">doc</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">indent: </span><span class="p">(</span><span class="nx">doc</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">HEREDOC_INDENT</span><span class="p">)</span> <span class="o">or</span> <span class="p">[</span><span class="s1">&#39;&#39;</span><span class="p">]).</span><span class="nx">sort</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span>
+    <span class="nx">doc</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="k">new</span> <span class="nb">RegExp</span><span class="p">(</span><span class="s2">&quot;^&quot;</span> <span class="o">+</span><span class="nx">indent</span><span class="p">,</span> <span class="s1">&#39;gm&#39;</span><span class="p">),</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
+       <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">MULTILINER</span><span class="p">,</span> <span class="s2">&quot;\\n&quot;</span><span class="p">)</span>
+       <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;\\&quot;&#39;</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-25">#</a>               </div>               <p>A source of ambiguity in our grammar used to be parameter lists in function
+definitions versus argument lists in function calls. Walk backwards, tagging
+parameters specially in order to make things easier for the parser.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">tag_parameters: </span><span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="k">if</span> <span class="err">@</span><span class="nx">tag</span><span class="p">()</span> <span class="o">isnt</span> <span class="s1">&#39;)&#39;</span>
+    <span class="nv">i: </span><span class="mi">0</span>
+    <span class="k">while</span> <span class="kc">true</span>
+      <span class="nx">i</span> <span class="o">+=</span> <span class="mi">1</span>
+      <span class="nv">tok: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="nx">i</span><span class="p">)</span>
+      <span class="k">return</span> <span class="k">if</span> <span class="o">not</span> <span class="nx">tok</span>
+      <span class="k">switch</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+        <span class="k">when</span> <span class="s1">&#39;IDENTIFIER&#39;</span> <span class="k">then</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;PARAM&#39;</span>
+        <span class="k">when</span> <span class="s1">&#39;)&#39;</span>          <span class="k">then</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;PARAM_END&#39;</span>
+        <span class="k">when</span> <span class="s1">&#39;(&#39;</span>          <span class="k">then</span> <span class="k">return</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;PARAM_START&#39;</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-26">#</a>               </div>               <p>Close up all remaining open blocks at the end of the file.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">close_indentation: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">outdent_token</span><span class="p">(</span><span class="err">@</span><span class="nx">indent</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-27">#</a>               </div>               <p>The error for when you try to use a forbidden word in JavaScript as
+an identifier.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">identifier_error: </span><span class="p">(</span><span class="nx">word</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;SyntaxError: Reserved word \&quot;$word\&quot; on line ${@line + 1}&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-28">#</a>               </div>               <p>The error for when you try to assign to a reserved word in JavaScript,
+like "function" or "default".</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">assignment_error: </span><span class="o">-&gt;</span>
+    <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;SyntaxError: Reserved word \&quot;${@value()}\&quot; on line ${@line + 1} can&#39;t be assigned&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-29">#</a>               </div>               <p>Matches a balanced group such as a single or double-quoted string. Pass in
+a series of delimiters, all of which must be nested correctly within the
+contents of the string. This method allows us to have strings within
+interpolations within strings etc...</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">balanced_string: </span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">delimited</span><span class="p">...)</span> <span class="o">-&gt;</span>
+    <span class="nv">levels: </span><span class="p">[]</span>
+    <span class="nv">i: </span><span class="mi">0</span>
+    <span class="k">while</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span>
+      <span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">delimited</span>
+        <span class="p">[</span><span class="nx">open</span><span class="p">,</span> <span class="nx">close</span><span class="p">]</span><span class="o">:</span> <span class="nx">pair</span>
+        <span class="k">if</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span> <span class="o">and</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="s1">&#39;\\&#39;</span><span class="p">,</span> <span class="nx">i</span>
+          <span class="nx">i</span> <span class="o">+=</span> <span class="mi">1</span>
+          <span class="k">break</span>
+        <span class="k">else</span> <span class="k">if</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span> <span class="o">and</span> <span class="nx">starts</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">close</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">and</span> <span class="nx">levels</span><span class="p">[</span><span class="nx">levels</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">is</span> <span class="nx">pair</span>
+          <span class="nx">levels</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+          <span class="nx">i</span> <span class="o">+=</span> <span class="nx">close</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+          <span class="nx">i</span> <span class="o">+=</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span>
+          <span class="k">break</span>
+        <span class="k">else</span> <span class="k">if</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="nx">open</span><span class="p">,</span> <span class="nx">i</span>
+          <span class="nx">levels</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">pair</span><span class="p">)</span>
+          <span class="nx">i</span> <span class="o">+=</span> <span class="nx">open</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+          <span class="k">break</span>
+      <span class="k">break</span> <span class="nx">unless</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span>
+      <span class="nx">i</span> <span class="o">+=</span> <span class="mi">1</span>
+    <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;SyntaxError: Unterminated ${levels.pop()[0]} starting on line ${@line + 1}&quot;</span> <span class="k">if</span> <span class="nx">levels</span><span class="p">.</span><span class="nx">length</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="mi">0</span>
+    <span class="k">return</span> <span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-30">#</a>               </div>               <p>Expand variables and expressions inside double-quoted strings using
+<a href="http://wiki.ecmascript.org/doku.php?id=strawman:string_interpolation">ECMA Harmony's interpolation syntax</a>
+for substitution of bare variables as well as arbitrary expressions.</p>
+
+<pre><code>"Hello $name."
+"Hello ${name.capitalize()}."
+</code></pre>
+
+<p>If it encounters an interpolation, this method will recursively create a
+new Lexer, tokenize the interpolated contents, and merge them into the
+token stream.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">interpolate_string: </span><span class="p">(</span><span class="nx">str</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">if</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;</span> <span class="mi">3</span> <span class="o">or</span> <span class="o">not</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="s1">&#39;&quot;&#39;</span>
+      <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="nx">str</span>
+    <span class="k">else</span>
+      <span class="nv">lexer: </span>   <span class="k">new</span> <span class="nx">Lexer</span><span class="p">()</span>
+      <span class="nv">tokens: </span>  <span class="p">[]</span>
+      <span class="nv">quote: </span>   <span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
+      <span class="p">[</span><span class="nx">i</span><span class="p">,</span> <span class="nx">pi</span><span class="p">]</span><span class="o">:</span>  <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">]</span>
+      <span class="k">while</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+        <span class="k">if</span> <span class="nx">starts</span> <span class="nx">str</span><span class="p">,</span> <span class="s1">&#39;\\&#39;</span><span class="p">,</span> <span class="nx">i</span>
+          <span class="nx">i</span> <span class="o">+=</span> <span class="mi">1</span>
+        <span class="k">else</span> <span class="k">if</span> <span class="nv">match: </span><span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="nx">i</span><span class="p">).</span><span class="nx">match</span> <span class="nx">INTERPOLATION</span>
+          <span class="p">[</span><span class="nx">group</span><span class="p">,</span> <span class="nx">interp</span><span class="p">]</span><span class="o">:</span> <span class="nx">match</span>
+          <span class="nv">interp: </span><span class="s2">&quot;this.${ interp.substring(1) }&quot;</span> <span class="k">if</span> <span class="nx">starts</span> <span class="nx">interp</span><span class="p">,</span> <span class="s1">&#39;@&#39;</span>
+          <span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote${ str.substring(pi, i) }$quote&quot;</span><span class="p">]</span> <span class="k">if</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">i</span>
+          <span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="nx">interp</span><span class="p">]</span>
+          <span class="nx">i</span> <span class="o">+=</span> <span class="nx">group</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+          <span class="nv">pi: </span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span>
+        <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nv">expr: </span><span class="err">@</span><span class="nx">balanced_string</span> <span class="nx">str</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="nx">i</span><span class="p">),</span> <span class="p">[</span><span class="s1">&#39;${&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">])</span>
+          <span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote${ str.substring(pi, i) }$quote&quot;</span><span class="p">]</span> <span class="k">if</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">i</span>
+          <span class="nv">inner: </span><span class="nx">expr</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span>
+          <span class="k">if</span> <span class="nx">inner</span><span class="p">.</span><span class="nx">length</span>
+            <span class="nv">nested: </span><span class="nx">lexer</span><span class="p">.</span><span class="nx">tokenize</span> <span class="s2">&quot;($inner)&quot;</span><span class="p">,</span> <span class="p">{</span><span class="nv">rewrite: </span><span class="kc">no</span><span class="p">,</span> <span class="nv">line: </span><span class="err">@</span><span class="nx">line</span><span class="p">}</span>
+            <span class="nx">nested</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+            <span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;TOKENS&#39;</span><span class="p">,</span> <span class="nx">nested</span><span class="p">]</span>
+          <span class="k">else</span>
+            <span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote$quote&quot;</span><span class="p">]</span>
+          <span class="nx">i</span> <span class="o">+=</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+          <span class="nv">pi: </span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span>
+        <span class="nx">i</span> <span class="o">+=</span> <span class="mi">1</span>
+      <span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span> <span class="p">[</span><span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s2">&quot;$quote${ str.substring(pi, i) }$quote&quot;</span><span class="p">]</span> <span class="k">if</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">i</span> <span class="o">and</span> <span class="nx">pi</span> <span class="o">&lt;</span> <span class="nx">str</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+      <span class="k">for</span> <span class="nx">each</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="nx">tokens</span>
+        <span class="k">if</span> <span class="nx">each</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;TOKENS&#39;</span>
+          <span class="err">@</span><span class="nv">tokens: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">each</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+        <span class="k">else</span>
+          <span class="err">@</span><span class="nx">token</span> <span class="nx">each</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">each</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+        <span class="err">@</span><span class="nx">token</span> <span class="s1">&#39;+&#39;</span><span class="p">,</span> <span class="s1">&#39;+&#39;</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">tokens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-31">#</a>               </div>               <h2>Helpers</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-32">#</a>               </div>               <p>Add a token to the results, taking note of the line number.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">token: </span><span class="p">(</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">push</span><span class="p">([</span><span class="nx">tag</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="err">@</span><span class="nx">line</span><span class="p">])</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-33">#</a>               </div>               <p>Peek at a tag in the current token stream.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">tag: </span><span class="p">(</span><span class="nx">index</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="nx">unless</span> <span class="nv">tok: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span>
+    <span class="k">return</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="nx">tag</span> <span class="k">if</span> <span class="nx">tag</span><span class="o">?</span>
+    <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-34">#</a>               </div>               <p>Peek at a value in the current token stream.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">value: </span><span class="p">(</span><span class="nx">index</span><span class="p">,</span> <span class="nx">val</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="nx">unless</span> <span class="nv">tok: </span><span class="err">@</span><span class="nx">prev</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span>
+    <span class="k">return</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">:</span> <span class="nx">val</span> <span class="k">if</span> <span class="nx">val</span><span class="o">?</span>
+    <span class="nx">tok</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-35">#</a>               </div>               <p>Peek at a previous token, entire.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">prev: </span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="p">(</span><span class="nx">index</span> <span class="o">or</span> <span class="mi">1</span><span class="p">)]</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-36">#</a>               </div>               <p>Attempt to match a string against the current chunk, returning the indexed
+match if successful, and <code>false</code> otherwise.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">match: </span><span class="p">(</span><span class="nx">regex</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">false</span> <span class="nx">unless</span> <span class="nv">m: </span><span class="err">@</span><span class="nx">chunk</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">regex</span><span class="p">)</span>
+    <span class="k">if</span> <span class="nx">m</span> <span class="k">then</span> <span class="nx">m</span><span class="p">[</span><span class="nx">index</span><span class="p">]</span> <span class="k">else</span> <span class="kc">false</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-37">#</a>               </div>               <h2>Constants</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-38">#</a>               </div>               <p>Keywords that CoffeeScript shares in common with JavaScript.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">JS_KEYWORDS: </span><span class="p">[</span>
+  <span class="s2">&quot;if&quot;</span><span class="p">,</span> <span class="s2">&quot;else&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;true&quot;</span><span class="p">,</span> <span class="s2">&quot;false&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;new&quot;</span><span class="p">,</span> <span class="s2">&quot;return&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;try&quot;</span><span class="p">,</span> <span class="s2">&quot;catch&quot;</span><span class="p">,</span> <span class="s2">&quot;finally&quot;</span><span class="p">,</span> <span class="s2">&quot;throw&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;break&quot;</span><span class="p">,</span> <span class="s2">&quot;continue&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;for&quot;</span><span class="p">,</span> <span class="s2">&quot;in&quot;</span><span class="p">,</span> <span class="s2">&quot;while&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;delete&quot;</span><span class="p">,</span> <span class="s2">&quot;instanceof&quot;</span><span class="p">,</span> <span class="s2">&quot;typeof&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;switch&quot;</span><span class="p">,</span> <span class="s2">&quot;super&quot;</span><span class="p">,</span> <span class="s2">&quot;extends&quot;</span><span class="p">,</span> <span class="s2">&quot;class&quot;</span>
+<span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-39">#</a>               </div>               <p>CoffeeScript-only keywords, which we're more relaxed about allowing. They can't
+be used standalone, but you can reference them as an attached property.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">COFFEE_KEYWORDS: </span><span class="p">[</span>
+  <span class="s2">&quot;then&quot;</span><span class="p">,</span> <span class="s2">&quot;unless&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;yes&quot;</span><span class="p">,</span> <span class="s2">&quot;no&quot;</span><span class="p">,</span> <span class="s2">&quot;on&quot;</span><span class="p">,</span> <span class="s2">&quot;off&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;and&quot;</span><span class="p">,</span> <span class="s2">&quot;or&quot;</span><span class="p">,</span> <span class="s2">&quot;is&quot;</span><span class="p">,</span> <span class="s2">&quot;isnt&quot;</span><span class="p">,</span> <span class="s2">&quot;not&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;of&quot;</span><span class="p">,</span> <span class="s2">&quot;by&quot;</span><span class="p">,</span> <span class="s2">&quot;where&quot;</span><span class="p">,</span> <span class="s2">&quot;when&quot;</span>
+<span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-40">#</a>               </div>               <p>The combined list of keywords is the superset that gets passed verbatim to
+the parser.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">KEYWORDS: </span><span class="nx">JS_KEYWORDS</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">COFFEE_KEYWORDS</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-41">#</a>               </div>               <p>The list of keywords that are reserved by JavaScript, but not used, or are
+used by CoffeeScript internally. We throw an error when these are encountered,
+to avoid having a JavaScript error at runtime.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">RESERVED: </span><span class="p">[</span>
+  <span class="s2">&quot;case&quot;</span><span class="p">,</span> <span class="s2">&quot;default&quot;</span><span class="p">,</span> <span class="s2">&quot;do&quot;</span><span class="p">,</span> <span class="s2">&quot;function&quot;</span><span class="p">,</span> <span class="s2">&quot;var&quot;</span><span class="p">,</span> <span class="s2">&quot;void&quot;</span><span class="p">,</span> <span class="s2">&quot;with&quot;</span>
+  <span class="s2">&quot;const&quot;</span><span class="p">,</span> <span class="s2">&quot;let&quot;</span><span class="p">,</span> <span class="s2">&quot;debugger&quot;</span><span class="p">,</span> <span class="s2">&quot;enum&quot;</span><span class="p">,</span> <span class="s2">&quot;export&quot;</span><span class="p">,</span> <span class="s2">&quot;import&quot;</span><span class="p">,</span> <span class="s2">&quot;native&quot;</span><span class="p">,</span>
+  <span class="s2">&quot;__extends&quot;</span><span class="p">,</span> <span class="s2">&quot;__hasProp&quot;</span>
+<span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-42">#</a>               </div>               <p>The superset of both JavaScript keywords and reserved words, none of which may
+be used as identifiers or properties.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">JS_FORBIDDEN: </span><span class="nx">JS_KEYWORDS</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">RESERVED</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-43">#</a>               </div>               <p>Token matching regexes.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nx">IDENTIFIER</span>    <span class="o">:</span> <span class="sr">/^([a-zA-Z$_](\w|\$)*)/</span>
+<span class="nx">NUMBER</span>        <span class="o">:</span> <span class="sr">/^(\b((0(x|X)[0-9a-fA-F]+)|([0-9]+(\.[0-9]+)?(e[+\-]?[0-9]+)?)))\b/i</span>
+<span class="nx">HEREDOC</span>       <span class="o">:</span> <span class="sr">/^(&quot;{6}|&#39;{6}|&quot;{3}\n?([\s\S]*?)\n?([ \t]*)&quot;{3}|&#39;{3}\n?([\s\S]*?)\n?([ \t]*)&#39;{3})/</span>
+<span class="nx">INTERPOLATION</span> <span class="o">:</span> <span class="sr">/^\$([a-zA-Z_@]\w*(\.\w+)*)/</span>
+<span class="nx">OPERATOR</span>      <span class="o">:</span> <span class="sr">/^([+\*&amp;|\/\-%=&lt;&gt;:!?]+)/</span>
+<span class="nx">WHITESPACE</span>    <span class="o">:</span> <span class="sr">/^([ \t]+)/</span>
+<span class="nx">COMMENT</span>       <span class="o">:</span> <span class="sr">/^(((\n?[ \t]*)?#[^\n]*)+)/</span>
+<span class="nx">CODE</span>          <span class="o">:</span> <span class="sr">/^((-|=)&gt;)/</span>
+<span class="nx">REGEX</span>         <span class="o">:</span> <span class="sr">/^(\/(\S.*?)?([^\\]|\\\\)\/[imgy]{0,4})/</span>
+<span class="nx">MULTI_DENT</span>    <span class="o">:</span> <span class="sr">/^((\n([ \t]*))+)(\.)?/</span>
+<span class="nx">LAST_DENTS</span>    <span class="o">:</span> <span class="sr">/\n([ \t]*)/g</span>
+<span class="nx">LAST_DENT</span>     <span class="o">:</span> <span class="sr">/\n([ \t]*)/</span>
+<span class="nx">ASSIGNMENT</span>    <span class="o">:</span> <span class="sr">/^(:|=)$/</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-44">#</a>               </div>               <p>Token cleaning regexes.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nx">JS_CLEANER</span>      <span class="o">:</span> <span class="sr">/(^`|`$)/g</span>
+<span class="nx">MULTILINER</span>      <span class="o">:</span> <span class="sr">/\n/g</span>
+<span class="nx">STRING_NEWLINES</span> <span class="o">:</span> <span class="sr">/\n[ \t]*/g</span>
+<span class="nx">COMMENT_CLEANER</span> <span class="o">:</span> <span class="sr">/(^[ \t]*#|\n[ \t]*$)/mg</span>
+<span class="nx">NO_NEWLINE</span>      <span class="o">:</span> <span class="sr">/^([+\*&amp;|\/\-%=&lt;&gt;:!.\\][&lt;&gt;=&amp;|]*|and|or|is|isnt|not|delete|typeof|instanceof)$/</span>
+<span class="nx">HEREDOC_INDENT</span>  <span class="o">:</span> <span class="sr">/^[ \t]+/mg</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-45">#</a>               </div>               <p>Tokens which a regular expression will never immediately follow, but which
+a division operator might.</p>
+
+<p>See: <a href='http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions'>http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions</a></p>
+
+<p>Our list is shorter, due to sans-parentheses method calls.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">NOT_REGEX: </span><span class="p">[</span>
+  <span class="s1">&#39;NUMBER&#39;</span><span class="p">,</span> <span class="s1">&#39;REGEX&#39;</span><span class="p">,</span> <span class="s1">&#39;++&#39;</span><span class="p">,</span> <span class="s1">&#39;--&#39;</span><span class="p">,</span> <span class="s1">&#39;FALSE&#39;</span><span class="p">,</span> <span class="s1">&#39;NULL&#39;</span><span class="p">,</span> <span class="s1">&#39;TRUE&#39;</span>
+<span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-46">#</a>               </div>               <p>Tokens which could legitimately be invoked or indexed. A opening
+parentheses or bracket following these tokens will be recorded as the start
+of a function invocation or indexing operation.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">CALLABLE: </span><span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="s1">&#39;SUPER&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="s1">&#39;]&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">,</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s1">&#39;@&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-47">#</a>               </div>               <p>Tokens that indicate an access -- keywords immediately following will be
+treated as identifiers.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">ACCESSORS: </span><span class="p">[</span><span class="s1">&#39;PROPERTY_ACCESS&#39;</span><span class="p">,</span> <span class="s1">&#39;PROTOTYPE_ACCESS&#39;</span><span class="p">,</span> <span class="s1">&#39;SOAK_ACCESS&#39;</span><span class="p">,</span> <span class="s1">&#39;@&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-48">#</a>               </div>               <p>Tokens that, when immediately preceding a <code>WHEN</code>, indicate that the <code>WHEN</code>
+occurs at the start of a line. We disambiguate these from trailing whens to
+avoid an ambiguity in the grammar.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">BEFORE_WHEN: </span><span class="p">[</span><span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-49">#</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-50">#</a>               </div>               <p>Does a list include a value?</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">include: </span><span class="p">(</span><span class="nx">list</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nx">list</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-51">#</a>               </div>               <p>Peek at the beginning of a given string to see if it matches a sequence.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">starts: </span><span class="p">(</span><span class="nx">string</span><span class="p">,</span> <span class="nx">literal</span><span class="p">,</span> <span class="nx">start</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nx">string</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="p">(</span><span class="nx">start</span> <span class="o">or</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="nx">literal</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="o">is</span> <span class="nx">literal</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-52">#</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">compact: </span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">item</span> <span class="k">for</span> <span class="nx">item</span> <span class="k">in</span> <span class="nx">array</span> <span class="k">when</span> <span class="nx">item</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-53">#</a>               </div>               <p>Count the number of occurences of a character in a string.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">count: </span><span class="p">(</span><span class="nx">string</span><span class="p">,</span> <span class="nx">letter</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">num: </span><span class="mi">0</span>
+  <span class="nv">pos: </span><span class="nx">string</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">letter</span><span class="p">)</span>
+  <span class="k">while</span> <span class="nx">pos</span> <span class="o">isnt</span> <span class="o">-</span><span class="mi">1</span>
+    <span class="nx">num</span> <span class="o">+=</span> <span class="mi">1</span>
+    <span class="nv">pos: </span><span class="nx">string</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">letter</span><span class="p">,</span> <span class="nx">pos</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span>
+  <span class="nx">num</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/nodes.html

@@ -0,0 +1,857 @@
+<!DOCTYPE html>  <html> <head>   <title>nodes.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               nodes.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p><code>nodes.coffee</code> contains all of the node classes for the syntax tree. Most
+nodes are created as the result of actions in the <a href="grammar.html">grammar</a>,
+but some are created by other nodes as a method of code generation. To convert
+the syntax tree into a string of JavaScript code, call <code>compile()</code> on the root.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>Set up for both <strong>Node.js</strong> and the browser, by
+including the <a href="scope.html">Scope</a> class.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="k">if</span> <span class="nx">process</span><span class="o">?</span>
+  <span class="nx">process</span><span class="p">.</span><span class="nx">mixin</span> <span class="nx">require</span> <span class="s1">&#39;scope&#39;</span>
+<span class="k">else</span>
+  <span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>Helper function that marks a node as a JavaScript <em>statement</em>, or as a
+<em>pure_statement</em>. Statements must be wrapped in a closure when used as an
+expression, and nodes tagged as <em>pure_statement</em> cannot be closure-wrapped
+without losing their meaning.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">statement: </span><span class="p">(</span><span class="nx">klass</span><span class="p">,</span> <span class="nx">only</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">klass::is_statement: </span><span class="o">-&gt;</span> <span class="kc">true</span>
+  <span class="p">(</span><span class="nv">klass::is_pure_statement: </span><span class="o">-&gt;</span> <span class="kc">true</span><span class="p">)</span> <span class="k">if</span> <span class="nx">only</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <h3>BaseNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>The <strong>BaseNode</strong> is the abstract base class for all nodes in the syntax tree.
+Each subclass implements the <code>compile_node</code> method, which performs the
+code generation for that node. To compile a node to JavaScript,
+call <code>compile</code> on it, which wraps <code>compile_node</code> in some generic extra smarts,
+to know when the generated code needs to be wrapped up in a closure.
+An options hash is passed and cloned throughout, containing information about
+the environment from higher in the tree (such as if a returned value is
+being requested by the surrounding function), information about the current
+scope, and indentation level.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.BaseNode: </span><span class="nx">class</span> <span class="nx">BaseNode</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Common logic for determining whether to wrap this node in a closure before
+compiling it, or to compile directly. We need to wrap if this node is a
+<em>statement</em>, and it's not a <em>pure_statement</em>, and we're not at
+the top level of a block (which would be unnecessary), and we haven't
+already been asked to return the result (because statements know how to
+return results).</p>
+
+<p>If a Node is <em>top_sensitive</em>, that means that it needs to compile differently
+depending on whether it's being used as part of a larger expression, or is a
+top-level statement within the function body.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">options: </span><span class="nx">merge</span> <span class="nx">o</span> <span class="o">or</span> <span class="p">{}</span>
+    <span class="err">@</span><span class="nv">tab: </span>    <span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
+    <span class="nx">del</span> <span class="err">@</span><span class="nx">options</span><span class="p">,</span> <span class="s1">&#39;operation&#39;</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">operation_sensitive</span><span class="p">()</span>
+    <span class="nv">top: </span>     <span class="k">if</span> <span class="err">@</span><span class="nx">top_sensitive</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">options</span><span class="p">.</span><span class="nx">top</span> <span class="k">else</span> <span class="nx">del</span> <span class="err">@</span><span class="nx">options</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span>
+    <span class="nv">closure: </span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">is_pure_statement</span><span class="p">()</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">top</span> <span class="o">and</span>
+              <span class="o">not</span> <span class="err">@</span><span class="nx">options</span><span class="p">.</span><span class="nx">returns</span> <span class="o">and</span> <span class="o">not</span> <span class="p">(</span><span class="k">this</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span><span class="p">)</span> <span class="o">and</span>
+              <span class="o">not</span> <span class="err">@</span><span class="nx">contains</span> <span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">node</span><span class="p">.</span><span class="nx">is_pure_statement</span><span class="p">()</span>
+    <span class="k">if</span> <span class="nx">closure</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_closure</span><span class="p">(</span><span class="err">@</span><span class="nx">options</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_node</span><span class="p">(</span><span class="err">@</span><span class="nx">options</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Statements converted into expressions via closure-wrapping share a scope
+object with their parent closure, to preserve the expected lexical scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_closure: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">tab: </span><span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
+    <span class="nv">o.shared_scope: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span>
+    <span class="nx">ClosureNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="k">this</span><span class="p">).</span><span class="nx">compile</span> <span class="nx">o</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>If the code generation wishes to use the result of a complex expression
+in multiple places, ensure that the expression is only ever evaluated once,
+by assigning it to a temporary variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_reference: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">reference: </span><span class="nx">literal</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+    <span class="nv">compiled: </span> <span class="k">new</span> <span class="nx">AssignNode</span> <span class="nx">reference</span><span class="p">,</span> <span class="k">this</span>
+    <span class="p">[</span><span class="nx">compiled</span><span class="p">,</span> <span class="nx">reference</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Convenience method to grab the current indentation level, plus tabbing in.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">idt: </span><span class="p">(</span><span class="nx">tabs</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">idt: </span><span class="err">@</span><span class="nx">tab</span> <span class="o">or</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">num: </span><span class="p">(</span><span class="nx">tabs</span> <span class="o">or</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
+    <span class="nx">idt</span> <span class="o">+=</span> <span class="nx">TAB</span> <span class="k">while</span> <span class="nx">num</span> <span class="o">-=</span> <span class="mi">1</span>
+    <span class="nx">idt</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Does this node, or any of its children, contain a node of a certain kind?
+Recursively traverses down the <em>children</em> of the nodes, yielding to a block
+and returning true when the block finds a match. <code>contains</code> does not cross
+scope boundaries.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">contains: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">for</span> <span class="nx">node</span> <span class="k">in</span> <span class="err">@</span><span class="nx">children</span>
+      <span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="nx">block</span><span class="p">(</span><span class="nx">node</span><span class="p">)</span>
+      <span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="nx">node</span><span class="p">.</span><span class="nx">contains</span> <span class="o">and</span> <span class="nx">node</span><span class="p">.</span><span class="nx">contains</span> <span class="nx">block</span>
+    <span class="kc">false</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>Perform an in-order traversal of the AST. Crosses scope boundaries.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">traverse: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">for</span> <span class="nx">node</span> <span class="k">in</span> <span class="err">@</span><span class="nx">children</span>
+      <span class="nx">block</span> <span class="nx">node</span>
+      <span class="nx">node</span><span class="p">.</span><span class="nx">traverse</span> <span class="nx">block</span> <span class="k">if</span> <span class="nx">node</span><span class="p">.</span><span class="nx">traverse</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p><code>toString</code> representation of the node, for inspecting the parse tree.
+This is what <code>coffee --nodes</code> prints out.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">toString: </span><span class="p">(</span><span class="nx">idt</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">idt</span> <span class="o">||=</span> <span class="s1">&#39;&#39;</span>
+    <span class="s1">&#39;\n&#39;</span> <span class="o">+</span> <span class="nx">idt</span> <span class="o">+</span> <span class="err">@</span><span class="nx">type</span> <span class="o">+</span> <span class="p">(</span><span class="nx">child</span><span class="p">.</span><span class="nx">toString</span><span class="p">(</span><span class="nx">idt</span> <span class="o">+</span> <span class="nx">TAB</span><span class="p">)</span> <span class="k">for</span> <span class="nx">child</span> <span class="k">in</span> <span class="err">@</span><span class="nx">children</span><span class="p">).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>Default implementations of the common node identification methods. Nodes
+will override these with custom logic, if needed.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">unwrap: </span>              <span class="o">-&gt;</span> <span class="k">this</span>
+  <span class="nv">children: </span>            <span class="p">[]</span>
+  <span class="nv">is_statement: </span>        <span class="o">-&gt;</span> <span class="kc">false</span>
+  <span class="nv">is_pure_statement: </span>   <span class="o">-&gt;</span> <span class="kc">false</span>
+  <span class="nv">top_sensitive: </span>       <span class="o">-&gt;</span> <span class="kc">false</span>
+  <span class="nv">operation_sensitive: </span> <span class="o">-&gt;</span> <span class="kc">false</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <h3>Expressions</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-15">#</a>               </div>               <p>The expressions body is the list of expressions that forms the body of an
+indented block of code -- the implementation of a function, a clause in an
+<code>if</code>, <code>switch</code>, or <code>try</code>, and so on...</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.Expressions: </span><span class="nx">class</span> <span class="nx">Expressions</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Expressions&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">nodes</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="err">@</span><span class="nv">expressions: </span><span class="nx">compact</span> <span class="nx">flatten</span> <span class="nx">nodes</span> <span class="o">or</span> <span class="p">[]</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-16">#</a>               </div>               <p>Tack an expression on to the end of this expression list.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">push: </span><span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">node</span><span class="p">)</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-17">#</a>               </div>               <p>Add an expression at the beginning of this expression list.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">unshift: </span><span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">unshift</span><span class="p">(</span><span class="nx">node</span><span class="p">)</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-18">#</a>               </div>               <p>If this Expressions consists of just a single node, unwrap it by pulling
+it back out.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">unwrap: </span><span class="o">-&gt;</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span> <span class="o">is</span> <span class="mi">1</span> <span class="k">then</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">else</span> <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-19">#</a>               </div>               <p>Is this an empty block of code?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">empty: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span> <span class="o">is</span> <span class="mi">0</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-20">#</a>               </div>               <p>Is the given node the last one in this block of expressions?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">is_last: </span><span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">l: </span><span class="err">@</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span>
+    <span class="nv">last_index: </span><span class="k">if</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">[</span><span class="nx">l</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span> <span class="k">then</span> <span class="mi">2</span> <span class="k">else</span> <span class="mi">1</span>
+    <span class="nx">node</span> <span class="o">is</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">[</span><span class="nx">l</span> <span class="o">-</span> <span class="nx">last_index</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-21">#</a>               </div>               <p>An <strong>Expressions</strong> is the only node that can serve as the root.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">o</span> <span class="o">||=</span> <span class="p">{}</span>
+    <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span> <span class="k">then</span> <span class="k">super</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_root</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="p">(</span><span class="err">@</span><span class="nx">compile_expression</span><span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span> <span class="k">for</span> <span class="nx">node</span> <span class="k">in</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">).</span><span class="nx">join</span><span class="p">(</span><span class="s2">&quot;\n&quot;</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-22">#</a>               </div>               <p>If we happen to be the top-level <strong>Expressions</strong>, wrap everything in
+a safety closure, unless requested not to.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_root: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">o.indent: </span><span class="err">@</span><span class="nv">tab: </span><span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">no_wrap</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="nx">TAB</span>
+    <span class="nv">o.scope: </span><span class="k">new</span> <span class="nx">Scope</span><span class="p">(</span><span class="kc">null</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="kc">null</span><span class="p">)</span>
+    <span class="nv">code: </span><span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">globals</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_node</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_with_declarations</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">code: </span><span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">TRAILING_WHITESPACE</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
+    <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">no_wrap</span> <span class="k">then</span> <span class="nx">code</span> <span class="k">else</span> <span class="s2">&quot;(function(){\n$code\n})();\n&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-23">#</a>               </div>               <p>Compile the expressions body for the contents of a function, with
+declarations of all inner variables pushed up to the top.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_with_declarations: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">code: </span><span class="err">@</span><span class="nx">compile_node</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">args: </span><span class="err">@</span><span class="nx">contains</span> <span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">node</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span> <span class="o">and</span> <span class="nx">node</span><span class="p">.</span><span class="nx">is_arguments</span><span class="p">()</span>
+    <span class="nv">code: </span><span class="s2">&quot;${@tab}arguments = Array.prototype.slice.call(arguments, 0);\n$code&quot;</span> <span class="k">if</span> <span class="nx">args</span>
+    <span class="nv">code: </span><span class="s2">&quot;${@tab}var ${o.scope.compiled_assignments()};\n$code&quot;</span>  <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">has_assignments</span><span class="p">(</span><span class="k">this</span><span class="p">)</span>
+    <span class="nv">code: </span><span class="s2">&quot;${@tab}var ${o.scope.compiled_declarations()};\n$code&quot;</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">has_declarations</span><span class="p">(</span><span class="k">this</span><span class="p">)</span>
+    <span class="nx">code</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-24">#</a>               </div>               <p>Compiles a single expression within the expressions body. If we need to
+return the result, and it's an expression, simply return it. If it's a
+statement, ask the statement to do so.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_expression: </span><span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">tab: </span><span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
+    <span class="nv">stmt: </span>   <span class="nx">node</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span>
+    <span class="nv">returns: </span><span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;returns&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="err">@</span><span class="nx">is_last</span><span class="p">(</span><span class="nx">node</span><span class="p">)</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">node</span><span class="p">.</span><span class="nx">is_pure_statement</span><span class="p">()</span>
+    <span class="k">return</span> <span class="p">(</span><span class="k">if</span> <span class="nx">stmt</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="err">@</span><span class="nx">idt</span><span class="p">())</span> <span class="o">+</span> <span class="nx">node</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">top: </span><span class="kc">true</span><span class="p">}))</span> <span class="o">+</span> <span class="p">(</span><span class="k">if</span> <span class="nx">stmt</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="s1">&#39;;&#39;</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">returns</span>
+    <span class="k">return</span> <span class="nx">node</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">returns: </span><span class="kc">true</span><span class="p">}))</span> <span class="k">if</span> <span class="nx">node</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span>
+    <span class="s2">&quot;${@tab}return ${node.compile(o)};&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-25">#</a>               </div>               <p>Wrap up the given nodes as an <strong>Expressions</strong>, unless it already happens
+to be one.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">Expressions.wrap: </span><span class="p">(</span><span class="nx">nodes</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="k">return</span> <span class="nx">nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="nx">nodes</span><span class="p">.</span><span class="nx">length</span> <span class="o">is</span> <span class="mi">1</span> <span class="o">and</span> <span class="nx">nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">instanceof</span> <span class="nx">Expressions</span>
+  <span class="k">new</span> <span class="nx">Expressions</span><span class="p">(</span><span class="nx">nodes</span><span class="p">)</span>
+
+<span class="nx">statement</span> <span class="nx">Expressions</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-26">#</a>               </div>               <h3>LiteralNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-27">#</a>               </div>               <p>Literals are static values that can be passed through directly into
+JavaScript without translation, such as: strings, numbers,
+<code>true</code>, <code>false</code>, <code>null</code>...</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.LiteralNode: </span><span class="nx">class</span> <span class="nx">LiteralNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Literal&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">value: </span><span class="nx">value</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-28">#</a>               </div>               <p>Break and continue must be treated as pure statements -- they lose their
+meaning when wrapped in a closure.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">is_statement: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;break&#39;</span> <span class="o">or</span> <span class="err">@</span><span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;continue&#39;</span>
+  <span class="nv">is_pure_statement: </span><span class="nx">LiteralNode</span><span class="o">::</span><span class="nx">is_statement</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">idt: </span><span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">end: </span><span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="s1">&#39;;&#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="s2">&quot;$idt$@value$end&quot;</span>
+
+  <span class="nv">toString: </span><span class="p">(</span><span class="nx">idt</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="s2">&quot; \&quot;$@value\&quot;&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-29">#</a>               </div>               <h3>ReturnNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-30">#</a>               </div>               <p>A <code>return</code> is a <em>pure_statement</em> -- wrapping it in a closure wouldn't
+make sense.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ReturnNode: </span><span class="nx">class</span> <span class="nx">ReturnNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Return&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">returns: </span><span class="kc">true</span><span class="p">}))</span> <span class="k">if</span> <span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span>
+    <span class="s2">&quot;${@tab}return ${@expression.compile(o)};&quot;</span>
+
+<span class="nx">statement</span> <span class="nx">ReturnNode</span><span class="p">,</span> <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-31">#</a>               </div>               <h3>ValueNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-32">#</a>               </div>               <p>A value, variable or literal or parenthesized, indexed or dotted into,
+or vanilla.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ValueNode: </span><span class="nx">class</span> <span class="nx">ValueNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Value&#39;</span>
+
+  <span class="nv">SOAK: </span><span class="s2">&quot; == undefined ? undefined : &quot;</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-33">#</a>               </div>               <p>A <strong>ValueNode</strong> has a base and a list of property accesses.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">base</span><span class="p">,</span> <span class="nx">properties</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span>  <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nv">base: </span><span class="nx">base</span><span class="p">,</span> <span class="err">@</span><span class="nv">properties: </span><span class="p">(</span><span class="nx">properties</span> <span class="o">or</span> <span class="p">[])]</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-34">#</a>               </div>               <p>Add a property access to the list.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">push: </span><span class="p">(</span><span class="nx">prop</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">prop</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">prop</span><span class="p">)</span>
+    <span class="k">this</span>
+
+  <span class="nv">operation_sensitive: </span><span class="o">-&gt;</span>
+    <span class="kc">true</span>
+
+  <span class="nv">has_properties: </span><span class="o">-&gt;</span>
+    <span class="o">!!</span><span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-35">#</a>               </div>               <p>Some boolean checks for the benefit of other nodes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">is_array: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">ArrayNode</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span>
+
+  <span class="nv">is_object: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">ObjectNode</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span>
+
+  <span class="nv">is_splice: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">properties</span><span class="p">[</span><span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">instanceof</span> <span class="nx">SliceNode</span>
+
+  <span class="nv">is_arguments: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;arguments&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-36">#</a>               </div>               <p>The value can be unwrapped as its inner node, if there are no attached
+properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">unwrap: </span><span class="o">-&gt;</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="k">then</span> <span class="k">this</span> <span class="k">else</span> <span class="err">@</span><span class="nx">base</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-37">#</a>               </div>               <p>Values are considered to be statements if their base is a statement.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">is_statement: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">is_statement</span> <span class="o">and</span> <span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-38">#</a>               </div>               <p>We compile a value to JavaScript by compiling and joining each property.
+Things get much more insteresting if the chain of properties has <em>soak</em>
+operators <code>?.</code> interspersed. Then we have to take care not to accidentally
+evaluate a anything twice when building the soak chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">soaked: </span>  <span class="kc">false</span>
+    <span class="nv">only: </span>    <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;only_first&#39;</span><span class="p">)</span>
+    <span class="nv">op: </span>      <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;operation&#39;</span><span class="p">)</span>
+    <span class="nv">props: </span>   <span class="k">if</span> <span class="nx">only</span> <span class="k">then</span> <span class="err">@</span><span class="nx">properties</span><span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="err">@</span><span class="nx">properties</span>
+    <span class="nv">baseline: </span><span class="err">@</span><span class="nx">base</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
+    <span class="nv">baseline: </span><span class="s2">&quot;($baseline)&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">ObjectNode</span> <span class="o">and</span> <span class="err">@</span><span class="nx">has_properties</span><span class="p">()</span>
+    <span class="nv">complete: </span><span class="err">@</span><span class="nv">last: </span><span class="nx">baseline</span>
+
+    <span class="k">for</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">props</span>
+      <span class="err">@</span><span class="nv">source: </span><span class="nx">baseline</span>
+      <span class="k">if</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">soak_node</span>
+        <span class="nv">soaked: </span><span class="kc">true</span>
+        <span class="k">if</span> <span class="err">@</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">CallNode</span> <span class="o">and</span> <span class="nx">prop</span> <span class="o">is</span> <span class="nx">props</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+          <span class="nv">temp: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+          <span class="nv">complete: </span><span class="s2">&quot;($temp = $complete)$@SOAK&quot;</span> <span class="o">+</span> <span class="p">(</span><span class="nv">baseline: </span><span class="nx">temp</span> <span class="o">+</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span>
+        <span class="k">else</span>
+          <span class="nv">complete: </span><span class="nx">complete</span> <span class="o">+</span> <span class="err">@</span><span class="nx">SOAK</span> <span class="o">+</span> <span class="p">(</span><span class="nx">baseline</span> <span class="o">+=</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span>
+      <span class="k">else</span>
+        <span class="nv">part: </span><span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+        <span class="nx">baseline</span> <span class="o">+=</span> <span class="nx">part</span>
+        <span class="nx">complete</span> <span class="o">+=</span> <span class="nx">part</span>
+        <span class="err">@</span><span class="nv">last: </span><span class="nx">part</span>
+
+    <span class="k">if</span> <span class="nx">op</span> <span class="o">and</span> <span class="nx">soaked</span> <span class="k">then</span> <span class="s2">&quot;($complete)&quot;</span> <span class="k">else</span> <span class="nx">complete</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-39">#</a>               </div>               <h3>CommentNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-40">#</a>               </div>               <p>CoffeeScript passes through comments as JavaScript comments at the
+same position.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.CommentNode: </span><span class="nx">class</span> <span class="nx">CommentNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Comment&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">lines</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">lines: </span><span class="nx">lines</span>
+    <span class="k">this</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="s2">&quot;$@tab//&quot;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">lines</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s2">&quot;\n$@tab//&quot;</span><span class="p">)</span>
+
+<span class="nx">statement</span> <span class="nx">CommentNode</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-41">#</a>               </div>               <h3>CallNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-42">#</a>               </div>               <p>Node for a function invocation. Takes care of converting <code>super()</code> calls into
+calls against the prototype's function of the same name.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.CallNode: </span><span class="nx">class</span> <span class="nx">CallNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Call&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">args</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span> <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nv">variable: </span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nv">args: </span><span class="p">(</span><span class="nx">args</span> <span class="o">or</span> <span class="p">[])]</span>
+    <span class="err">@</span><span class="nv">prefix: </span>   <span class="s1">&#39;&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-43">#</a>               </div>               <p>Tag this invocation as creating a new instance.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">new_instance: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">prefix: </span><span class="s1">&#39;new &#39;</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-44">#</a>               </div>               <p>Add an argument to the call's arugment list.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">push: </span><span class="p">(</span><span class="nx">arg</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">args</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">arg</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">arg</span><span class="p">)</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-45">#</a>               </div>               <p>Compile a vanilla function call.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">compile_splat</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">args</span><span class="p">[</span><span class="err">@</span><span class="nx">args</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span>
+    <span class="nv">args: </span><span class="p">(</span><span class="nx">arg</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="err">@</span><span class="nx">args</span><span class="p">).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;, &#39;</span><span class="p">)</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">compile_super</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">variable</span> <span class="o">is</span> <span class="s1">&#39;super&#39;</span>
+    <span class="s2">&quot;$@prefix${@variable.compile(o)}($args)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-46">#</a>               </div>               <p><code>super()</code> is converted into a call against the superclass's implementation
+of the current function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_super: </span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">methname: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">method</span><span class="p">.</span><span class="nx">name</span>
+    <span class="nv">meth: </span><span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">method</span><span class="p">.</span><span class="nx">proto</span>
+      <span class="s2">&quot;${o.scope.method.proto}.__superClass__.$methname&quot;</span>
+    <span class="k">else</span>
+      <span class="s2">&quot;${methname}.__superClass__.constructor&quot;</span>
+    <span class="s2">&quot;${meth}.call(this${ if args.length then &#39;, &#39; else &#39;&#39; }$args)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-47">#</a>               </div>               <p>If you call a function with a splat, it's converted into a JavaScript
+<code>.apply()</code> call to allow the variable-length arguments.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_splat: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">meth: </span><span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
+    <span class="nv">obj: </span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">source</span> <span class="o">or</span> <span class="s1">&#39;this&#39;</span>
+    <span class="k">if</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="sr">/\(/</span><span class="p">)</span>
+      <span class="nv">temp: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+      <span class="nv">obj: </span> <span class="nx">temp</span>
+      <span class="nv">meth: </span><span class="s2">&quot;($temp = ${ @variable.source })${ @variable.last }&quot;</span>
+    <span class="nv">args: </span><span class="k">for</span> <span class="nx">arg</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">args</span>
+      <span class="nv">code: </span><span class="nx">arg</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
+      <span class="nv">code: </span><span class="k">if</span> <span class="nx">arg</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span> <span class="k">then</span> <span class="nx">code</span> <span class="k">else</span> <span class="s2">&quot;[$code]&quot;</span>
+      <span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="mi">0</span> <span class="k">then</span> <span class="nx">code</span> <span class="k">else</span> <span class="s2">&quot;.concat($code)&quot;</span>
+    <span class="s2">&quot;$@prefix${meth}.apply($obj, ${ args.join(&#39;&#39;) })&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-48">#</a>               </div>               <h3>ExtendsNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-49">#</a>               </div>               <p>Node to extend an object's prototype with an ancestor object.
+After <code>goog.inherits</code> from the
+<a href="http://closure-library.googlecode.com/svn/docs/closure_goog_base.js.html">Closure Library</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ExtendsNode: </span><span class="nx">class</span> <span class="nx">ExtendsNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Extends&#39;</span>
+
+  <span class="nv">code: </span><span class="s1">&#39;&#39;&#39;</span>
+<span class="s1">        function(child, parent) {</span>
+<span class="s1">            var ctor = function(){ };</span>
+<span class="s1">            ctor.prototype = parent.prototype;</span>
+<span class="s1">            child.__superClass__ = parent.prototype;</span>
+<span class="s1">            child.prototype = new ctor();</span>
+<span class="s1">            child.prototype.constructor = child;</span>
+<span class="s1">          }</span>
+<span class="s1">        &#39;&#39;&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">child</span><span class="p">,</span> <span class="nx">parent</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">child: </span><span class="nx">child</span><span class="p">,</span> <span class="err">@</span><span class="nv">parent: </span><span class="nx">parent</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-50">#</a>               </div>               <p>Hooks one constructor into another's prototype chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">assign</span><span class="p">(</span><span class="s1">&#39;__extends&#39;</span><span class="p">,</span> <span class="err">@</span><span class="nx">code</span><span class="p">,</span> <span class="kc">true</span><span class="p">)</span>
+    <span class="nv">ref: </span> <span class="k">new</span> <span class="nx">ValueNode</span> <span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;__extends&#39;</span><span class="p">)</span>
+    <span class="nv">call: </span><span class="k">new</span> <span class="nx">CallNode</span> <span class="nx">ref</span><span class="p">,</span> <span class="p">[</span><span class="err">@</span><span class="nx">child</span><span class="p">,</span> <span class="err">@</span><span class="nx">parent</span><span class="p">]</span>
+    <span class="nx">call</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-51">#</a>               </div>               <h3>AccessorNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-52">#</a>               </div>               <p>A <code>.</code> accessor into a property of a value, or the <code>::</code> shorthand for
+an accessor into the object's prototype.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.AccessorNode: </span><span class="nx">class</span> <span class="nx">AccessorNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Accessor&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">name: </span><span class="nx">name</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">prototype: </span><span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;prototype&#39;</span>
+    <span class="err">@</span><span class="nv">soak_node: </span><span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;soak&#39;</span>
+    <span class="k">this</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="s1">&#39;.&#39;</span> <span class="o">+</span> <span class="p">(</span><span class="k">if</span> <span class="err">@</span><span class="nx">prototype</span> <span class="k">then</span> <span class="s1">&#39;prototype.&#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="o">+</span> <span class="err">@</span><span class="nx">name</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-53">#</a>               </div>               <h3>IndexNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-54">#</a>               </div>               <p>An indexed accessor into an array or object.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.IndexNode: </span><span class="nx">class</span> <span class="nx">IndexNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Index&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">index</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">index: </span><span class="nx">index</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">soak_node: </span><span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;soak&#39;</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">idx: </span><span class="err">@</span><span class="nx">index</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
+    <span class="s2">&quot;[$idx]&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-55">#</a>               </div>               <h3>RangeNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-56">#</a>               </div>               <p>A range literal. Ranges can be used to extract portions (slices) of arrays,
+to specify a range for comprehensions, or as a value, to be expanded into the
+corresponding array of integers at runtime.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.RangeNode: </span><span class="nx">class</span> <span class="nx">RangeNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Range&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">from</span><span class="p">,</span> <span class="nx">to</span><span class="p">,</span> <span class="nx">exclusive</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span> <span class="p">[</span><span class="err">@</span><span class="nv">from: </span><span class="nx">from</span><span class="p">,</span> <span class="err">@</span><span class="nv">to: </span><span class="nx">to</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">exclusive: </span><span class="o">!!</span><span class="nx">exclusive</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-57">#</a>               </div>               <p>Compiles the range's source variables -- where it starts and where it ends.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_variables: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">tab: </span><span class="nx">o</span><span class="p">.</span><span class="nx">indent</span>
+    <span class="p">[</span><span class="err">@</span><span class="nx">from_var</span><span class="p">,</span> <span class="err">@</span><span class="nx">to_var</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">(),</span> <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()]</span>
+    <span class="p">[</span><span class="nx">from</span><span class="p">,</span> <span class="nx">to</span><span class="p">]</span><span class="o">:</span>           <span class="p">[</span><span class="err">@</span><span class="nx">from</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">to</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
+    <span class="s2">&quot;$@from_var = $from; $@to_var = $to;\n$@tab&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-58">#</a>               </div>               <p>When compiled normally, the range returns the contents of the <em>for loop</em>
+needed to iterate over the values in the range. Used by comprehensions.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span>    <span class="err">@</span><span class="nx">compile_array</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">o</span><span class="p">.</span><span class="nx">index</span>
+    <span class="nv">idx: </span>     <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;index&#39;</span>
+    <span class="nv">step: </span>    <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;step&#39;</span>
+    <span class="nv">vars: </span>    <span class="s2">&quot;$idx = $@from_var&quot;</span>
+    <span class="nv">step: </span>    <span class="k">if</span> <span class="nx">step</span> <span class="k">then</span> <span class="nx">step</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;1&#39;</span>
+    <span class="nv">equals: </span>  <span class="k">if</span> <span class="err">@</span><span class="nx">exclusive</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="s1">&#39;=&#39;</span>
+    <span class="nv">intro: </span>   <span class="s2">&quot;($@from_var &lt;= $@to_var ? $idx&quot;</span>
+    <span class="nv">compare: </span> <span class="s2">&quot;$intro &lt;$equals $@to_var : $idx &gt;$equals $@to_var)&quot;</span>
+    <span class="nv">incr: </span>    <span class="s2">&quot;$intro += $step : $idx -= $step)&quot;</span>
+    <span class="s2">&quot;$vars; $compare; $incr&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-59">#</a>               </div>               <p>When used as a value, expand the range into the equivalent array. In the
+future, the code this generates should probably be cleaned up by handwriting
+it instead of wrapping nodes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_array: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">name: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+    <span class="nv">body: </span><span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">literal</span><span class="p">(</span><span class="nx">name</span><span class="p">)])</span>
+    <span class="nv">arr: </span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">ForNode</span><span class="p">(</span><span class="nx">body</span><span class="p">,</span> <span class="p">{</span><span class="nv">source: </span><span class="p">(</span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="k">this</span><span class="p">))},</span> <span class="nx">literal</span><span class="p">(</span><span class="nx">name</span><span class="p">))])</span>
+    <span class="p">(</span><span class="k">new</span> <span class="nx">ParentheticalNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([],</span> <span class="nx">arr</span><span class="p">)))).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-60">#</a>               </div>               <h3>SliceNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-61">#</a>               </div>               <p>An array slice literal. Unlike JavaScript's <code>Array#slice</code>, the second parameter
+specifies the index of the end of the slice, just as the first parameter
+is the index of the beginning.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.SliceNode: </span><span class="nx">class</span> <span class="nx">SliceNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Slice&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">range</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">range: </span><span class="nx">range</span><span class="p">]</span>
+    <span class="k">this</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">from: </span>      <span class="err">@</span><span class="nx">range</span><span class="p">.</span><span class="nx">from</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">to: </span>        <span class="err">@</span><span class="nx">range</span><span class="p">.</span><span class="nx">to</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">plus_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">range</span><span class="p">.</span><span class="nx">exclusive</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="s1">&#39; + 1&#39;</span>
+    <span class="s2">&quot;.slice($from, $to$plus_part)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-62">#</a>               </div>               <h3>ObjectNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-63">#</a>               </div>               <p>An object literal, nothing fancy.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ObjectNode: </span><span class="nx">class</span> <span class="nx">ObjectNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Object&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">props</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="err">@</span><span class="nv">objects: </span><span class="err">@</span><span class="nv">properties: </span><span class="nx">props</span> <span class="o">or</span> <span class="p">[]</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-64">#</a>               </div>               <p>All the mucking about with commas is to make sure that CommentNodes and
+AssignNodes get interleaved correctly, with no trailing commas or
+commas affixed to comments.</p>
+
+<p><em>TODO: Extract this and add it to ArrayNode</em>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">o.indent: </span><span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
+    <span class="nv">non_comments: </span><span class="nx">prop</span> <span class="k">for</span> <span class="nx">prop</span> <span class="k">in</span> <span class="err">@</span><span class="nx">properties</span> <span class="k">when</span> <span class="o">not</span> <span class="p">(</span><span class="nx">prop</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span><span class="p">)</span>
+    <span class="nv">last_noncom: </span> <span class="nx">non_comments</span><span class="p">[</span><span class="nx">non_comments</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span>
+    <span class="nv">props: </span><span class="k">for</span> <span class="nx">prop</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">properties</span>
+      <span class="nv">join: </span>  <span class="s2">&quot;,\n&quot;</span>
+      <span class="nv">join: </span>  <span class="s2">&quot;\n&quot;</span> <span class="k">if</span> <span class="p">(</span><span class="nx">prop</span> <span class="o">is</span> <span class="nx">last_noncom</span><span class="p">)</span> <span class="o">or</span> <span class="p">(</span><span class="nx">prop</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span><span class="p">)</span>
+      <span class="nv">join: </span>  <span class="s1">&#39;&#39;</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="err">@</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+      <span class="nv">indent: </span><span class="k">if</span> <span class="nx">prop</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
+      <span class="nx">indent</span> <span class="o">+</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="nx">join</span>
+    <span class="nv">props: </span><span class="nx">props</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span>
+    <span class="nv">inner: </span><span class="k">if</span> <span class="nx">props</span> <span class="k">then</span> <span class="s1">&#39;\n&#39;</span> <span class="o">+</span> <span class="nx">props</span> <span class="o">+</span> <span class="s1">&#39;\n&#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="s2">&quot;{$inner}&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-65">#</a>               </div>               <h3>ArrayNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-66">#</a>               </div>               <p>An array literal.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ArrayNode: </span><span class="nx">class</span> <span class="nx">ArrayNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Array&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">objects</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="err">@</span><span class="nv">objects: </span><span class="nx">objects</span> <span class="o">or</span> <span class="p">[]</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">o.indent: </span><span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
+    <span class="nv">objects: </span><span class="k">for</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">objects</span>
+      <span class="nv">code: </span><span class="nx">obj</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+      <span class="k">if</span> <span class="nx">obj</span> <span class="k">instanceof</span> <span class="nx">CommentNode</span>
+        <span class="s2">&quot;\n$code\n$o.indent&quot;</span>
+      <span class="k">else</span> <span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="err">@</span><span class="nx">objects</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span>
+        <span class="nx">code</span>
+      <span class="k">else</span>
+        <span class="s2">&quot;$code, &quot;</span>
+    <span class="nv">objects: </span><span class="nx">objects</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span>
+    <span class="nv">ending: </span><span class="k">if</span> <span class="nx">objects</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="s1">&#39;\n&#39;</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span> <span class="k">then</span> <span class="s2">&quot;\n$@tab]&quot;</span> <span class="k">else</span> <span class="s1">&#39;]&#39;</span>
+    <span class="s2">&quot;[$objects$ending&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-67">#</a>               </div>               <h3>ClassNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-68">#</a>               </div>               <p>The CoffeeScript class definition.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ClassNode: </span><span class="nx">class</span> <span class="nx">ClassNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Class&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-69">#</a>               </div>               <p>Initialize a <strong>ClassNode</strong> with its name, an optional superclass, and a
+list of prototype property assignments.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">parent</span><span class="p">,</span> <span class="nx">props</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nv">variable: </span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nv">parent: </span><span class="nx">parent</span><span class="p">,</span> <span class="err">@</span><span class="nv">properties: </span><span class="nx">props</span> <span class="o">or</span> <span class="p">[]]</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-70">#</a>               </div>               <p>Instead of generating the JavaScript string directly, we build up the
+equivalent syntax tree and compile that, in pieces. You can see the
+constructor, property assignments, and inheritance getting built out below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">extension: </span>  <span class="err">@</span><span class="nx">parent</span> <span class="o">and</span> <span class="k">new</span> <span class="nx">ExtendsNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nx">parent</span><span class="p">)</span>
+    <span class="nv">constructor: </span><span class="kc">null</span>
+    <span class="nv">props: </span>      <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
+    <span class="nv">o.top: </span>      <span class="kc">true</span>
+    <span class="nv">ret: </span>        <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;returns&#39;</span>
+
+    <span class="k">for</span> <span class="nx">prop</span> <span class="k">in</span> <span class="err">@</span><span class="nx">properties</span>
+      <span class="k">if</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span> <span class="o">and</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">.</span><span class="nx">value</span> <span class="o">is</span> <span class="s1">&#39;constructor&#39;</span>
+        <span class="nv">func: </span><span class="nx">prop</span><span class="p">.</span><span class="nx">value</span>
+        <span class="nx">func</span><span class="p">.</span><span class="nx">body</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="k">new</span> <span class="nx">ReturnNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">)))</span>
+        <span class="nv">constructor: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span>
+      <span class="k">else</span>
+        <span class="k">if</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span>
+          <span class="nv">val: </span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">prop</span><span class="p">.</span><span class="nx">variable</span><span class="p">,</span> <span class="s1">&#39;prototype&#39;</span><span class="p">)])</span>
+          <span class="nv">prop: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="nx">val</span><span class="p">,</span> <span class="nx">prop</span><span class="p">.</span><span class="nx">value</span><span class="p">)</span>
+        <span class="nx">props</span><span class="p">.</span><span class="nx">push</span> <span class="nx">prop</span>
+
+    <span class="k">if</span> <span class="o">not</span> <span class="nx">constructor</span>
+      <span class="k">if</span> <span class="err">@</span><span class="nx">parent</span>
+        <span class="nv">applied: </span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="err">@</span><span class="nx">parent</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;apply&#39;</span><span class="p">))])</span>
+        <span class="nv">constructor: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([],</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">([</span>
+          <span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="nx">applied</span><span class="p">,</span> <span class="p">[</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">),</span> <span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;arguments&#39;</span><span class="p">)])</span>
+        <span class="p">])))</span>
+      <span class="k">else</span>
+        <span class="nv">constructor: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">,</span> <span class="k">new</span> <span class="nx">CodeNode</span><span class="p">())</span>
+
+    <span class="nv">construct: </span>                      <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="o">+</span> <span class="nx">constructor</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39;;\n&#39;</span>
+    <span class="nv">props: </span>    <span class="k">if</span> <span class="nx">props</span><span class="p">.</span><span class="nx">empty</span><span class="p">()</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="nx">props</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39;\n&#39;</span>
+    <span class="nv">extension: </span><span class="k">if</span> <span class="nx">extension</span>     <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="o">+</span> <span class="nx">extension</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39;;\n&#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">returns: </span>  <span class="k">if</span> <span class="nx">ret</span>           <span class="k">then</span> <span class="s1">&#39;\n&#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="o">+</span> <span class="s1">&#39;return &#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39;;&#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="s2">&quot;$construct$extension$props$returns&quot;</span>
+
+<span class="nx">statement</span> <span class="nx">ClassNode</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-71">#</a>               </div>               <h3>PushNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-72">#</a>               </div>               <p>A faux-node that is never created by the grammar, but is used during
+code generation to generate a quick <code>array.push(value)</code> tree of nodes.
+Helpful for recording the result arrays from comprehensions.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">PushNode: exports.PushNode: </span><span class="p">{</span>
+
+  <span class="nv">wrap: </span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">expressions</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">expr: </span><span class="nx">expressions</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
+    <span class="k">return</span> <span class="nx">expressions</span> <span class="k">if</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">is_pure_statement</span><span class="p">()</span> <span class="o">or</span> <span class="nx">expr</span><span class="p">.</span><span class="nx">contains</span> <span class="p">(</span><span class="nx">n</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">n</span><span class="p">.</span><span class="nx">is_pure_statement</span><span class="p">()</span>
+    <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span>
+      <span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;push&#39;</span><span class="p">))]),</span> <span class="p">[</span><span class="nx">expr</span><span class="p">]</span>
+    <span class="p">)])</span>
+
+<span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-73">#</a>               </div>               <h3>ClosureNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-74">#</a>               </div>               <p>A faux-node used to wrap an expressions body in a closure.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">ClosureNode: exports.ClosureNode: </span><span class="p">{</span>
+
+  <span class="nv">wrap: </span><span class="p">(</span><span class="nx">expressions</span><span class="p">,</span> <span class="nx">statement</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">func: </span><span class="k">new</span> <span class="nx">ParentheticalNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">CodeNode</span><span class="p">([],</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">expressions</span><span class="p">])))</span>
+    <span class="nv">call: </span><span class="k">new</span> <span class="nx">CallNode</span><span class="p">(</span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="p">[</span><span class="k">new</span> <span class="nx">AccessorNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;call&#39;</span><span class="p">))]),</span> <span class="p">[</span><span class="nx">literal</span><span class="p">(</span><span class="s1">&#39;this&#39;</span><span class="p">)])</span>
+    <span class="k">if</span> <span class="nx">statement</span> <span class="k">then</span> <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="nx">call</span><span class="p">])</span> <span class="k">else</span> <span class="nx">call</span>
+
+<span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-75">#</a>               </div>               <h3>AssignNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-76">#</a>               </div>               <p>The <strong>AssignNode</strong> is used to assign a local variable to value, or to set the
+property of an object -- including within object literals.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.AssignNode: </span><span class="nx">class</span> <span class="nx">AssignNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Assign&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-77">#</a>               </div>               <p>Matchers for detecting prototype assignments.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">PROTO_ASSIGN: </span><span class="sr">/^(\S+)\.prototype/</span>
+  <span class="nv">LEADING_DOT: </span> <span class="sr">/^\.(prototype\.)?/</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">variable: </span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nv">value: </span><span class="nx">value</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">context: </span><span class="nx">context</span>
+
+  <span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
+    <span class="kc">true</span>
+
+  <span class="nv">is_value: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">variable</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span>
+
+  <span class="nv">is_statement: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="o">and</span> <span class="p">(</span><span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_array</span><span class="p">()</span> <span class="o">or</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_object</span><span class="p">())</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-78">#</a>               </div>               <p>Compile an assignment, delegating to <code>compile_pattern_match</code> or
+<code>compile_splice</code> if appropriate. Keep track of the name of the base object
+we've been assigned to, for correct internal references. If the variable
+has not been seen yet within the current scope, declare it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">top: </span>   <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span>
+    <span class="k">return</span>  <span class="err">@</span><span class="nx">compile_pattern_match</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span>
+    <span class="k">return</span>  <span class="err">@</span><span class="nx">compile_splice</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_splice</span><span class="p">()</span>
+    <span class="nv">stmt: </span>  <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;as_statement&#39;</span>
+    <span class="nv">name: </span>  <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">last: </span>  <span class="k">if</span> <span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">last</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="err">@</span><span class="nx">LEADING_DOT</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">else</span> <span class="nx">name</span>
+    <span class="nv">match: </span> <span class="nx">name</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="err">@</span><span class="nx">PROTO_ASSIGN</span><span class="p">)</span>
+    <span class="nv">proto: </span> <span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">value</span> <span class="k">instanceof</span> <span class="nx">CodeNode</span>
+      <span class="err">@</span><span class="nv">value.name: </span> <span class="nx">last</span>  <span class="k">if</span> <span class="nx">last</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">IDENTIFIER</span><span class="p">)</span>
+      <span class="err">@</span><span class="nv">value.proto: </span><span class="nx">proto</span> <span class="k">if</span> <span class="nx">proto</span>
+    <span class="nv">val: </span><span class="err">@</span><span class="nx">value</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
+    <span class="k">return</span> <span class="s2">&quot;$name: $val&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">context</span> <span class="o">is</span> <span class="s1">&#39;object&#39;</span>
+    <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">name</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">is_value</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">has_properties</span><span class="p">()</span>
+    <span class="nv">val: </span><span class="s2">&quot;$name = $val&quot;</span>
+    <span class="k">return</span> <span class="s2">&quot;$@tab$val;&quot;</span> <span class="k">if</span> <span class="nx">stmt</span>
+    <span class="nv">val: </span><span class="s2">&quot;($val)&quot;</span> <span class="k">if</span> <span class="o">not</span> <span class="nx">top</span> <span class="o">or</span> <span class="nx">o</span><span class="p">.</span><span class="nx">returns</span>
+    <span class="nv">val: </span><span class="s2">&quot;${@tab}return $val&quot;</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">returns</span>
+    <span class="nx">val</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-79">#</a>               </div>               <p>Brief implementation of recursive pattern matching, when assigning array or
+object literals to a value. Peeks at their properties to assign inner names.
+See the <a href="http://wiki.ecmascript.org/doku.php?id=harmony:destructuring">ECMAScript Harmony Wiki</a>
+for details.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_pattern_match: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">val_var: </span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+    <span class="nv">value: </span><span class="k">if</span> <span class="err">@</span><span class="nx">value</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="nx">ClosureNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="err">@</span><span class="nx">value</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">value</span>
+    <span class="nv">assigns: </span><span class="p">[</span><span class="s2">&quot;$@tab$val_var = ${ value.compile(o) };&quot;</span><span class="p">]</span>
+    <span class="nv">o.top: </span><span class="kc">true</span>
+    <span class="nv">o.as_statement: </span><span class="kc">true</span>
+    <span class="k">for</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">.</span><span class="nx">objects</span>
+      <span class="nv">idx: </span><span class="nx">i</span>
+      <span class="p">[</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">idx</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">obj</span><span class="p">.</span><span class="nx">value</span><span class="p">,</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">]</span> <span class="k">if</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_object</span><span class="p">()</span>
+      <span class="nv">access_class: </span><span class="k">if</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">is_array</span><span class="p">()</span> <span class="k">then</span> <span class="nx">IndexNode</span> <span class="k">else</span> <span class="nx">AccessorNode</span>
+      <span class="k">if</span> <span class="nx">obj</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span>
+        <span class="nv">val: </span><span class="nx">literal</span><span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">compile_value</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">val_var</span><span class="p">,</span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">base</span><span class="p">.</span><span class="nx">objects</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">obj</span><span class="p">)))</span>
+      <span class="k">else</span>
+        <span class="nv">idx: </span><span class="nx">literal</span><span class="p">(</span><span class="nx">idx</span><span class="p">)</span> <span class="nx">unless</span> <span class="k">typeof</span> <span class="nx">idx</span> <span class="o">is</span> <span class="s1">&#39;object&#39;</span>
+        <span class="nv">val: </span><span class="k">new</span> <span class="nx">ValueNode</span><span class="p">(</span><span class="nx">literal</span><span class="p">(</span><span class="nx">val_var</span><span class="p">),</span> <span class="p">[</span><span class="k">new</span> <span class="nx">access_class</span><span class="p">(</span><span class="nx">idx</span><span class="p">)])</span>
+      <span class="nx">assigns</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">val</span><span class="p">).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">))</span>
+    <span class="nv">code: </span><span class="nx">assigns</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s2">&quot;\n&quot;</span><span class="p">)</span>
+    <span class="nx">code</span> <span class="o">+=</span> <span class="s2">&quot;\n${@tab}return ${ @variable.compile(o) };&quot;</span> <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">returns</span>
+    <span class="nx">code</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-80">#</a>               </div>               <p>Compile the assignment from an array splice literal, using JavaScript's
+<code>Array#splice</code> method.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_splice: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">name: </span>  <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">only_first: </span><span class="kc">true</span><span class="p">}))</span>
+    <span class="nv">l: </span>     <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span>
+    <span class="nv">range: </span> <span class="err">@</span><span class="nx">variable</span><span class="p">.</span><span class="nx">properties</span><span class="p">[</span><span class="nx">l</span> <span class="o">-</span> <span class="mi">1</span><span class="p">].</span><span class="nx">range</span>
+    <span class="nv">plus: </span>  <span class="k">if</span> <span class="nx">range</span><span class="p">.</span><span class="nx">exclusive</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="s1">&#39; + 1&#39;</span>
+    <span class="nv">from: </span>  <span class="nx">range</span><span class="p">.</span><span class="nx">from</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">to: </span>    <span class="nx">range</span><span class="p">.</span><span class="nx">to</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39; - &#39;</span> <span class="o">+</span> <span class="nx">from</span> <span class="o">+</span> <span class="nx">plus</span>
+    <span class="nv">val: </span>   <span class="err">@</span><span class="nx">value</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="s2">&quot;${name}.splice.apply($name, [$from, $to].concat($val))&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-81">#</a>               </div>               <h3>CodeNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-82">#</a>               </div>               <p>A function definition. This is the only node that creates a new Scope.
+When for the purposes of walking the contents of a function body, the CodeNode
+has no <em>children</em> -- they're within the inner scope.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.CodeNode: </span><span class="nx">class</span> <span class="nx">CodeNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Code&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">params</span><span class="p">,</span> <span class="nx">body</span><span class="p">,</span> <span class="nx">tag</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">params: </span> <span class="nx">params</span> <span class="o">or</span> <span class="p">[]</span>
+    <span class="err">@</span><span class="nv">body: </span>   <span class="nx">body</span> <span class="o">or</span> <span class="k">new</span> <span class="nx">Expressions</span><span class="p">()</span>
+    <span class="err">@</span><span class="nv">bound: </span>  <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;boundfunc&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-83">#</a>               </div>               <p>Compilation creates a new scope unless explicitly asked to share with the
+outer scope. Handles splat parameters in the parameter list by peeking at
+the JavaScript <code>arguments</code> objects. If the function is bound with the <code>=&gt;</code>
+arrow, generates a wrapper that saves the current value of <code>this</code> through
+a closure.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">shared_scope: </span><span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;shared_scope&#39;</span>
+    <span class="nv">top: </span>         <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span>
+    <span class="nv">o.scope: </span>     <span class="nx">shared_scope</span> <span class="o">or</span> <span class="k">new</span> <span class="nx">Scope</span><span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">,</span> <span class="k">this</span><span class="p">)</span>
+    <span class="nv">o.returns: </span>   <span class="kc">true</span>
+    <span class="nv">o.top: </span>       <span class="kc">true</span>
+    <span class="nv">o.indent: </span>    <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="k">if</span> <span class="err">@</span><span class="nx">bound</span> <span class="k">then</span> <span class="mi">2</span> <span class="k">else</span> <span class="mi">1</span><span class="p">)</span>
+    <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;no_wrap&#39;</span>
+    <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;globals&#39;</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">params</span><span class="p">[</span><span class="err">@</span><span class="nx">params</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="k">instanceof</span> <span class="nx">SplatNode</span>
+      <span class="nv">splat: </span><span class="err">@</span><span class="nx">params</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+      <span class="nv">splat.index: </span><span class="err">@</span><span class="nx">params</span><span class="p">.</span><span class="nx">length</span>
+      <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">unshift</span><span class="p">(</span><span class="nx">splat</span><span class="p">)</span>
+    <span class="nv">params: </span><span class="p">(</span><span class="nx">param</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">for</span> <span class="nx">param</span> <span class="k">in</span> <span class="err">@</span><span class="nx">params</span><span class="p">)</span>
+    <span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">parameter</span><span class="p">(</span><span class="nx">param</span><span class="p">))</span> <span class="k">for</span> <span class="nx">param</span> <span class="k">in</span> <span class="nx">params</span>
+    <span class="nv">code: </span><span class="k">if</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">expressions</span><span class="p">.</span><span class="nx">length</span> <span class="k">then</span> <span class="s2">&quot;\n${ @body.compile_with_declarations(o) }\n&quot;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">name_part: </span><span class="k">if</span> <span class="err">@</span><span class="nx">name</span> <span class="k">then</span> <span class="s1">&#39; &#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">name</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">func: </span><span class="s2">&quot;function${ if @bound then &#39;&#39; else name_part }(${ params.join(&#39;, &#39;) }) {$code${@idt(if @bound then 1 else 0)}}&quot;</span>
+    <span class="nv">func: </span><span class="s2">&quot;($func)&quot;</span> <span class="k">if</span> <span class="nx">top</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">bound</span>
+    <span class="k">return</span> <span class="nx">func</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">bound</span>
+    <span class="nv">inner: </span><span class="s2">&quot;(function$name_part() {\n${@idt(2)}return __func.apply(__this, arguments);\n${@idt(1)}});&quot;</span>
+    <span class="s2">&quot;(function(__this) {\n${@idt(1)}var __func = $func;\n${@idt(1)}return $inner\n$@tab})(this)&quot;</span>
+
+  <span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-84">#</a>               </div>               <p>When traversing (for printing or inspecting), return the real children of
+the function -- the parameters and body of expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">real_children: </span><span class="o">-&gt;</span>
+    <span class="nx">flatten</span> <span class="p">[</span><span class="err">@</span><span class="nx">params</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">expressions</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-85">#</a>               </div>               <p>Custom <code>traverse</code> implementation that uses the <code>real_children</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">traverse: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">block</span> <span class="k">this</span>
+    <span class="nx">block</span><span class="p">(</span><span class="nx">child</span><span class="p">)</span> <span class="k">for</span> <span class="nx">child</span> <span class="k">in</span> <span class="err">@</span><span class="nx">real_children</span><span class="p">()</span>
+
+  <span class="nv">toString: </span><span class="p">(</span><span class="nx">idt</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">idt</span> <span class="o">||=</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">children: </span><span class="p">(</span><span class="nx">child</span><span class="p">.</span><span class="nx">toString</span><span class="p">(</span><span class="nx">idt</span> <span class="o">+</span> <span class="nx">TAB</span><span class="p">)</span> <span class="k">for</span> <span class="nx">child</span> <span class="k">in</span> <span class="err">@</span><span class="nx">real_children</span><span class="p">()).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span>
+    <span class="s2">&quot;\n$idt$children&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-86">#</a>               </div>               <h3>SplatNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-87">#</a>               </div>               <p>A splat, either as a parameter to a function, an argument to a call,
+or as part of a destructuring assignment.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.SplatNode: </span><span class="nx">class</span> <span class="nx">SplatNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Splat&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">name: </span><span class="nx">literal</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">name</span><span class="p">.</span><span class="nx">compile</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">name: </span><span class="nx">name</span><span class="p">]</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">index</span><span class="o">?</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_param</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">name</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-88">#</a>               </div>               <p>Compiling a parameter splat means recovering the parameters that succeed
+the splat in the parameter list, by slicing the arguments object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_param: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">name: </span><span class="err">@</span><span class="nx">name</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">name</span>
+    <span class="s2">&quot;$name = Array.prototype.slice.call(arguments, $@index)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-89">#</a>               </div>               <p>A compiling a splat as a destructuring assignment means slicing arguments
+from the right-hand-side's corresponding array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_value: </span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="s2">&quot;Array.prototype.slice.call($name, $index)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-90">#</a>               </div>               <h3>WhileNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-91">#</a>               </div>               <p>A while loop, the only sort of low-level loop exposed by CoffeeScript. From
+it, all other loops can be manufactured. Useful in cases where you need more
+flexibility or more speed than a comprehension can provide.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.WhileNode: </span><span class="nx">class</span> <span class="nx">WhileNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;While&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">condition</span><span class="p">,</span> <span class="nx">opts</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">children</span><span class="o">:</span><span class="p">[</span><span class="err">@</span><span class="nv">condition: </span><span class="nx">condition</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">filter: </span><span class="nx">opts</span> <span class="o">and</span> <span class="nx">opts</span><span class="p">.</span><span class="nx">filter</span>
+
+  <span class="nv">add_body: </span><span class="p">(</span><span class="nx">body</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">push</span> <span class="err">@</span><span class="nv">body: </span><span class="nx">body</span>
+    <span class="k">this</span>
+
+  <span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-92">#</a>               </div>               <p>The main difference from a JavaScript <em>while</em> is that the CoffeeScript
+<em>while</em> can be used as a part of a larger expression -- while loops may
+return an array containing the computed result of each iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">returns: </span>   <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;returns&#39;</span><span class="p">)</span>
+    <span class="nv">top: </span>       <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">returns</span>
+    <span class="nv">o.indent: </span>  <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
+    <span class="nv">o.top: </span>     <span class="kc">true</span>
+    <span class="nv">cond: </span>      <span class="err">@</span><span class="nx">condition</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">set: </span>       <span class="s1">&#39;&#39;</span>
+    <span class="k">if</span> <span class="o">not</span> <span class="nx">top</span>
+      <span class="nv">rvar: </span>    <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+      <span class="nv">set: </span>     <span class="s2">&quot;$@tab$rvar = [];\n&quot;</span>
+      <span class="err">@</span><span class="nv">body: </span>   <span class="nx">PushNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="nx">rvar</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">body</span>
+    <span class="nv">post: </span>      <span class="k">if</span> <span class="nx">returns</span> <span class="k">then</span> <span class="s2">&quot;\n${@tab}return $rvar;&quot;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">pre: </span>       <span class="s2">&quot;$set${@tab}while ($cond)&quot;</span>
+    <span class="k">return</span>      <span class="s2">&quot;$pre null;$post&quot;</span> <span class="k">if</span> <span class="o">not</span> <span class="err">@</span><span class="nx">body</span>
+    <span class="err">@</span><span class="nv">body: </span>     <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="err">@</span><span class="nx">filter</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">)])</span> <span class="k">if</span> <span class="err">@</span><span class="nx">filter</span>
+    <span class="s2">&quot;$pre {\n${ @body.compile(o) }\n$@tab}$post&quot;</span>
+
+<span class="nx">statement</span> <span class="nx">WhileNode</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-93">#</a>               </div>               <h3>OpNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-94">#</a>               </div>               <p>Simple Arithmetic and logical operations. Performs some conversion from
+CoffeeScript operations into their JavaScript equivalents.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.OpNode: </span><span class="nx">class</span> <span class="nx">OpNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Op&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-95">#</a>               </div>               <p>The map of conversions from CoffeeScript to JavaScript symbols.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">CONVERSIONS: </span><span class="p">{</span>
+    <span class="s1">&#39;==&#39;</span><span class="o">:</span>   <span class="s1">&#39;===&#39;</span>
+    <span class="s1">&#39;!=&#39;</span><span class="o">:</span>   <span class="s1">&#39;!==&#39;</span>
+    <span class="s1">&#39;and&#39;</span><span class="o">:</span>  <span class="s1">&#39;&amp;&amp;&#39;</span>
+    <span class="s1">&#39;or&#39;</span><span class="o">:</span>   <span class="s1">&#39;||&#39;</span>
+    <span class="s1">&#39;is&#39;</span><span class="o">:</span>   <span class="s1">&#39;===&#39;</span>
+    <span class="s1">&#39;isnt&#39;</span><span class="o">:</span> <span class="s1">&#39;!==&#39;</span>
+    <span class="s1">&#39;not&#39;</span><span class="o">:</span>  <span class="s1">&#39;!&#39;</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-96">#</a>               </div>               <p>The list of operators for which we perform
+<a href="http://docs.python.org/reference/expressions.html#notin">Python-style comparison chaining</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">CHAINABLE: </span>       <span class="p">[</span><span class="s1">&#39;&lt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&gt;=&#39;</span><span class="p">,</span> <span class="s1">&#39;&lt;=&#39;</span><span class="p">,</span> <span class="s1">&#39;===&#39;</span><span class="p">,</span> <span class="s1">&#39;!==&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-97">#</a>               </div>               <p>Our assignment operators that have no JavaScript equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">ASSIGNMENT: </span>      <span class="p">[</span><span class="s1">&#39;||=&#39;</span><span class="p">,</span> <span class="s1">&#39;&amp;&amp;=&#39;</span><span class="p">,</span> <span class="s1">&#39;?=&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-98">#</a>               </div>               <p>Operators must come before their operands with a space.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">PREFIX_OPERATORS: </span><span class="p">[</span><span class="s1">&#39;typeof&#39;</span><span class="p">,</span> <span class="s1">&#39;delete&#39;</span><span class="p">]</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">operator</span><span class="p">,</span> <span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">,</span> <span class="nx">flip</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">type</span> <span class="o">+=</span> <span class="s1">&#39; &#39;</span> <span class="o">+</span> <span class="nx">operator</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="p">[</span><span class="err">@</span><span class="nv">first: </span><span class="nx">first</span><span class="p">,</span> <span class="err">@</span><span class="nv">second: </span><span class="nx">second</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">operator: </span><span class="err">@</span><span class="nx">CONVERSIONS</span><span class="p">[</span><span class="nx">operator</span><span class="p">]</span> <span class="o">or</span> <span class="nx">operator</span>
+    <span class="err">@</span><span class="nv">flip: </span><span class="o">!!</span><span class="nx">flip</span>
+
+  <span class="nv">is_unary: </span><span class="o">-&gt;</span>
+    <span class="o">not</span> <span class="err">@</span><span class="nx">second</span>
+
+  <span class="nv">is_chainable: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">CHAINABLE</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="err">@</span><span class="nx">operator</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">o.operation: </span><span class="kc">true</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">compile_chain</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>      <span class="k">if</span> <span class="err">@</span><span class="nx">is_chainable</span><span class="p">()</span> <span class="o">and</span> <span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span> <span class="k">instanceof</span> <span class="nx">OpNode</span> <span class="o">and</span> <span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">().</span><span class="nx">is_chainable</span><span class="p">()</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">compile_assignment</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">ASSIGNMENT</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="err">@</span><span class="nx">operator</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">compile_unary</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>      <span class="k">if</span> <span class="err">@</span><span class="nx">is_unary</span><span class="p">()</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">compile_existence</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>  <span class="k">if</span> <span class="err">@</span><span class="nx">operator</span> <span class="o">is</span> <span class="s1">&#39;?&#39;</span>
+    <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">operator</span><span class="p">,</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)].</span><span class="nx">join</span> <span class="s1">&#39; &#39;</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-99">#</a>               </div>               <p>Mimic Python's chained comparisons when multiple comparison operators are
+used sequentially. For example:</p>
+
+<pre><code>bin/coffee -e "puts 50 &lt; 65 &gt; 10"
+true
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_chain: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">shared: </span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">().</span><span class="nx">second</span>
+    <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">second</span><span class="p">,</span> <span class="nx">shared</span><span class="p">]</span><span class="o">:</span> <span class="nx">shared</span><span class="p">.</span><span class="nx">compile_reference</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="nx">shared</span> <span class="k">instanceof</span> <span class="nx">CallNode</span>
+    <span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">,</span> <span class="nx">shared</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="nx">shared</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
+    <span class="s2">&quot;($first) &amp;&amp; ($shared $@operator $second)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-100">#</a>               </div>               <p>When compiling a conditional assignment, take care to ensure that the
+operands are only evaluated once, even though we have to reference them
+more than once.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_assignment: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
+    <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">find</span><span class="p">(</span><span class="nx">first</span><span class="p">)</span> <span class="k">if</span> <span class="nx">first</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">IDENTIFIER</span><span class="p">)</span>
+    <span class="k">return</span> <span class="s2">&quot;$first = ${ ExistenceNode.compile_test(o, @first) } ? $first : $second&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">operator</span> <span class="o">is</span> <span class="s1">&#39;?=&#39;</span>
+    <span class="s2">&quot;$first = $first ${ @operator.substr(0, 2) } $second&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-101">#</a>               </div>               <p>If this is an existence operator, we delegate to <code>ExistenceNode.compile_test</code>
+to give us the safe references for the variables.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_existence: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="err">@</span><span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
+    <span class="nv">test: </span><span class="nx">ExistenceNode</span><span class="p">.</span><span class="nx">compile_test</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="err">@</span><span class="nx">first</span><span class="p">)</span>
+    <span class="s2">&quot;$test ? $first : $second&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-102">#</a>               </div>               <p>Compile a unary <strong>OpNode</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_unary: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">space: </span><span class="k">if</span> <span class="err">@</span><span class="nx">PREFIX_OPERATORS</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="err">@</span><span class="nx">operator</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span> <span class="k">then</span> <span class="s1">&#39; &#39;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">parts: </span><span class="p">[</span><span class="err">@</span><span class="nx">operator</span><span class="p">,</span> <span class="nx">space</span><span class="p">,</span> <span class="err">@</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
+    <span class="nv">parts: </span><span class="nx">parts</span><span class="p">.</span><span class="nx">reverse</span><span class="p">()</span> <span class="k">if</span> <span class="err">@</span><span class="nx">flip</span>
+    <span class="nx">parts</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-103">#</a>               </div>               <h3>TryNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-104">#</a>               </div>               <p>A classic <em>try/catch/finally</em> block.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.TryNode: </span><span class="nx">class</span> <span class="nx">TryNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Try&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">attempt</span><span class="p">,</span> <span class="nx">error</span><span class="p">,</span> <span class="nx">recovery</span><span class="p">,</span> <span class="nx">ensure</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="p">[</span><span class="err">@</span><span class="nv">attempt: </span><span class="nx">attempt</span><span class="p">,</span> <span class="err">@</span><span class="nv">recovery: </span><span class="nx">recovery</span><span class="p">,</span> <span class="err">@</span><span class="nv">ensure: </span><span class="nx">ensure</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">error: </span><span class="nx">error</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-105">#</a>               </div>               <p>Compilation is more or less as you would expect -- the <em>finally</em> clause
+is optional, the <em>catch</em> is not.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">o.indent: </span>    <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
+    <span class="nv">o.top: </span>       <span class="kc">true</span>
+    <span class="nv">attempt_part: </span><span class="err">@</span><span class="nx">attempt</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">error_part: </span>  <span class="k">if</span> <span class="err">@</span><span class="nx">error</span> <span class="k">then</span> <span class="s2">&quot; (${ @error.compile(o) }) &quot;</span> <span class="k">else</span> <span class="s1">&#39; &#39;</span>
+    <span class="nv">catch_part: </span>  <span class="s2">&quot;${ (@recovery or &#39;&#39;) and &#39; catch&#39; }$error_part{\n${ @recovery.compile(o) }\n$@tab}&quot;</span>
+    <span class="nv">finally_part: </span><span class="p">(</span><span class="err">@</span><span class="nx">ensure</span> <span class="o">or</span> <span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="s1">&#39; finally {\n&#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">ensure</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">returns: </span><span class="kc">null</span><span class="p">}))</span> <span class="o">+</span> <span class="s2">&quot;\n$@tab}&quot;</span>
+    <span class="s2">&quot;${@tab}try {\n$attempt_part\n$@tab}$catch_part$finally_part&quot;</span>
+
+<span class="nx">statement</span> <span class="nx">TryNode</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-106">#</a>               </div>               <h3>ThrowNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-107">#</a>               </div>               <p>Simple node to throw an exception.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ThrowNode: </span><span class="nx">class</span> <span class="nx">ThrowNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Throw&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="s2">&quot;${@tab}throw ${@expression.compile(o)};&quot;</span>
+
+<span class="nx">statement</span> <span class="nx">ThrowNode</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-108">#</a>               </div>               <h3>ExistenceNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-109">#</a>               </div>               <p>Checks a variable for existence -- not <em>null</em> and not <em>undefined</em>. This is
+similar to <code>.nil?</code> in Ruby, and avoids having to consult a JavaScript truth
+table.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ExistenceNode: </span><span class="nx">class</span> <span class="nx">ExistenceNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Existence&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">ExistenceNode</span><span class="p">.</span><span class="nx">compile_test</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="err">@</span><span class="nx">expression</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-110">#</a>               </div>               <p>The meat of the <strong>ExistenceNode</strong> is in this static <code>compile_test</code> method
+because other nodes like to check the existence of their variables as well.
+Be careful not to double-evaluate anything.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">ExistenceNode.compile_test: </span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">variable</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">variable</span><span class="p">,</span> <span class="nx">variable</span><span class="p">]</span>
+  <span class="k">if</span> <span class="nx">variable</span> <span class="k">instanceof</span> <span class="nx">CallNode</span> <span class="o">or</span> <span class="p">(</span><span class="nx">variable</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span> <span class="o">and</span> <span class="nx">variable</span><span class="p">.</span><span class="nx">has_properties</span><span class="p">())</span>
+    <span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="nx">variable</span><span class="p">.</span><span class="nx">compile_reference</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+  <span class="p">[</span><span class="nx">first</span><span class="p">,</span> <span class="nx">second</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">first</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">),</span> <span class="nx">second</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)]</span>
+  <span class="s2">&quot;(typeof $first !== \&quot;undefined\&quot; &amp;&amp; $second !== null)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-111">#</a>               </div>               <h3>ParentheticalNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-112">#</a>               </div>               <p>An extra set of parentheses, specified explicitly in the source. At one time
+we tried to clean up the results by detecting and removing redundant
+parentheses, but no longer -- you can put in as many as you please.</p>
+
+<p>Parentheses are a good way to force any statement to become an expression.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ParentheticalNode: </span><span class="nx">class</span> <span class="nx">ParentheticalNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;Paren&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="p">[</span><span class="err">@</span><span class="nv">expression: </span><span class="nx">expression</span><span class="p">]</span>
+
+  <span class="nv">is_statement: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">code: </span><span class="err">@</span><span class="nx">expression</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="k">return</span> <span class="nx">code</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span>
+    <span class="nv">l: </span>   <span class="nx">code</span><span class="p">.</span><span class="nx">length</span>
+    <span class="nv">code: </span><span class="nx">code</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="nx">l</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span> <span class="k">if</span> <span class="nx">code</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="nx">l</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="o">is</span> <span class="s1">&#39;;&#39;</span>
+    <span class="s2">&quot;($code)&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-113">#</a>               </div>               <h3>ForNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-114">#</a>               </div>               <p>CoffeeScript's replacement for the <em>for</em> loop is our array and object
+comprehensions, that compile into <em>for</em> loops here. They also act as an
+expression, able to return the result of each filtered iteration.</p>
+
+<p>Unlike Python array comprehensions, they can be multi-line, and you can pass
+the current index of the loop as a second parameter. Unlike Ruby blocks,
+you can map and filter in a single pass.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.ForNode: </span><span class="nx">class</span> <span class="nx">ForNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;For&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">body</span><span class="p">,</span> <span class="nx">source</span><span class="p">,</span> <span class="nx">name</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">body: </span>   <span class="nx">body</span>
+    <span class="err">@</span><span class="nv">name: </span>   <span class="nx">name</span>
+    <span class="err">@</span><span class="nv">index: </span>  <span class="nx">index</span> <span class="o">or</span> <span class="kc">null</span>
+    <span class="err">@</span><span class="nv">source: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">source</span>
+    <span class="err">@</span><span class="nv">filter: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">filter</span>
+    <span class="err">@</span><span class="nv">step: </span>   <span class="nx">source</span><span class="p">.</span><span class="nx">step</span>
+    <span class="err">@</span><span class="nv">object: </span> <span class="o">!!</span><span class="nx">source</span><span class="p">.</span><span class="nx">object</span>
+    <span class="p">[</span><span class="err">@</span><span class="nx">name</span><span class="p">,</span> <span class="err">@</span><span class="nx">index</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="err">@</span><span class="nx">index</span><span class="p">,</span> <span class="err">@</span><span class="nx">name</span><span class="p">]</span> <span class="k">if</span> <span class="err">@</span><span class="nx">object</span>
+    <span class="err">@</span><span class="nv">children: </span><span class="nx">compact</span> <span class="p">[</span><span class="err">@</span><span class="nx">body</span><span class="p">,</span> <span class="err">@</span><span class="nx">source</span><span class="p">,</span> <span class="err">@</span><span class="nx">filter</span><span class="p">]</span>
+
+  <span class="nv">top_sensitive: </span><span class="o">-&gt;</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-115">#</a>               </div>               <p>Welcome to the hairiest method in all of CoffeeScript. Handles the inner
+loop, filtering, stepping, and result saving for array, object, and range
+comprehensions. Some of the generated code can be shared in common, and
+some cannot.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">top_level: </span>     <span class="nx">del</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;top&#39;</span><span class="p">)</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">o</span><span class="p">.</span><span class="nx">returns</span>
+    <span class="nv">range: </span>         <span class="err">@</span><span class="nx">source</span> <span class="k">instanceof</span> <span class="nx">ValueNode</span> <span class="o">and</span> <span class="err">@</span><span class="nx">source</span><span class="p">.</span><span class="nx">base</span> <span class="k">instanceof</span> <span class="nx">RangeNode</span> <span class="o">and</span> <span class="o">not</span> <span class="err">@</span><span class="nx">source</span><span class="p">.</span><span class="nx">properties</span><span class="p">.</span><span class="nx">length</span>
+    <span class="nv">source: </span>        <span class="k">if</span> <span class="nx">range</span> <span class="k">then</span> <span class="err">@</span><span class="nx">source</span><span class="p">.</span><span class="nx">base</span> <span class="k">else</span> <span class="err">@</span><span class="nx">source</span>
+    <span class="nv">scope: </span>         <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span>
+    <span class="nv">name: </span>          <span class="err">@</span><span class="nx">name</span> <span class="o">and</span> <span class="err">@</span><span class="nx">name</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
+    <span class="nv">index: </span>         <span class="err">@</span><span class="nx">index</span> <span class="o">and</span> <span class="err">@</span><span class="nx">index</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">o</span>
+    <span class="nv">name_found: </span>    <span class="nx">name</span> <span class="o">and</span> <span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">name</span>
+    <span class="nv">index_found: </span>   <span class="nx">index</span> <span class="o">and</span> <span class="nx">scope</span><span class="p">.</span><span class="nx">find</span> <span class="nx">index</span>
+    <span class="nv">body_dent: </span>     <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
+    <span class="nv">rvar: </span>          <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">top_level</span>
+    <span class="nv">svar: </span>          <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+    <span class="nv">ivar: </span>          <span class="k">if</span> <span class="nx">range</span> <span class="k">then</span> <span class="nx">name</span> <span class="k">else</span> <span class="nx">index</span> <span class="o">or</span> <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+    <span class="nv">var_part: </span>      <span class="s1">&#39;&#39;</span>
+    <span class="nv">body: </span>          <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="err">@</span><span class="nx">body</span><span class="p">])</span>
+    <span class="k">if</span> <span class="nx">range</span>
+      <span class="nv">index_var: </span>   <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+      <span class="nv">source_part: </span> <span class="nx">source</span><span class="p">.</span><span class="nx">compile_variables</span> <span class="nx">o</span>
+      <span class="nv">for_part: </span>    <span class="nx">source</span><span class="p">.</span><span class="nx">compile</span> <span class="nx">merge</span> <span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">index: </span><span class="nx">ivar</span><span class="p">,</span> <span class="nv">step: </span><span class="err">@</span><span class="nx">step</span><span class="p">}</span>
+      <span class="nv">for_part: </span>    <span class="s2">&quot;$index_var = 0, $for_part, $index_var++&quot;</span>
+    <span class="k">else</span>
+      <span class="nv">index_var: </span>   <span class="kc">null</span>
+      <span class="nv">source_part: </span> <span class="s2">&quot;$svar = ${ @source.compile(o) };\n$@tab&quot;</span>
+      <span class="nv">var_part: </span>    <span class="s2">&quot;$body_dent$name = $svar[$ivar];\n&quot;</span> <span class="k">if</span> <span class="nx">name</span>
+      <span class="k">if</span> <span class="o">not</span> <span class="err">@</span><span class="nx">object</span>
+        <span class="nv">lvar: </span>      <span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">()</span>
+        <span class="nv">step_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">step</span> <span class="k">then</span> <span class="s2">&quot;$ivar += ${ @step.compile(o) }&quot;</span> <span class="k">else</span> <span class="s2">&quot;$ivar++&quot;</span>
+        <span class="nv">for_part: </span>  <span class="s2">&quot;$ivar = 0, $lvar = ${svar}.length; $ivar &lt; $lvar; $step_part&quot;</span>
+    <span class="nv">set_result: </span>    <span class="k">if</span> <span class="nx">rvar</span> <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="o">+</span> <span class="nx">rvar</span> <span class="o">+</span> <span class="s1">&#39; = []; &#39;</span> <span class="k">else</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span>
+    <span class="nv">return_result: </span> <span class="nx">rvar</span> <span class="o">or</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">body: </span>          <span class="nx">ClosureNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="nx">body</span><span class="p">,</span> <span class="kc">true</span><span class="p">)</span> <span class="k">if</span> <span class="nx">top_level</span> <span class="o">and</span> <span class="err">@</span><span class="nx">contains</span> <span class="p">(</span><span class="nx">n</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">n</span> <span class="k">instanceof</span> <span class="nx">CodeNode</span>
+    <span class="nv">body: </span>          <span class="nx">PushNode</span><span class="p">.</span><span class="nx">wrap</span><span class="p">(</span><span class="nx">rvar</span><span class="p">,</span> <span class="nx">body</span><span class="p">)</span> <span class="nx">unless</span> <span class="nx">top_level</span>
+    <span class="k">if</span> <span class="nx">o</span><span class="p">.</span><span class="nx">returns</span>
+      <span class="nv">return_result: </span><span class="s1">&#39;return &#39;</span> <span class="o">+</span> <span class="nx">return_result</span>
+      <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;returns&#39;</span>
+      <span class="nv">body: </span>        <span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="err">@</span><span class="nx">filter</span><span class="p">,</span> <span class="nx">body</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="p">{</span><span class="nv">statement: </span><span class="kc">true</span><span class="p">})</span> <span class="k">if</span> <span class="err">@</span><span class="nx">filter</span>
+    <span class="k">else</span> <span class="k">if</span> <span class="err">@</span><span class="nx">filter</span>
+      <span class="nv">body: </span>        <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="k">new</span> <span class="nx">IfNode</span><span class="p">(</span><span class="err">@</span><span class="nx">filter</span><span class="p">,</span> <span class="nx">body</span><span class="p">)])</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">object</span>
+      <span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">assign</span><span class="p">(</span><span class="s1">&#39;__hasProp&#39;</span><span class="p">,</span> <span class="s1">&#39;Object.prototype.hasOwnProperty&#39;</span><span class="p">,</span> <span class="kc">true</span><span class="p">)</span>
+      <span class="nv">for_part: </span><span class="s2">&quot;$ivar in $svar) { if (__hasProp.call($svar, $ivar)&quot;</span>
+    <span class="nv">return_result: </span> <span class="s2">&quot;\n$@tab$return_result;&quot;</span> <span class="nx">unless</span> <span class="nx">top_level</span>
+    <span class="nv">body: </span>          <span class="nx">body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">indent: </span><span class="nx">body_dent</span><span class="p">,</span> <span class="nv">top: </span><span class="kc">true</span><span class="p">}))</span>
+    <span class="nv">vars: </span>          <span class="k">if</span> <span class="nx">range</span> <span class="k">then</span> <span class="nx">name</span> <span class="k">else</span> <span class="s2">&quot;$name, $ivar&quot;</span>
+    <span class="nv">close: </span>         <span class="k">if</span> <span class="err">@</span><span class="nx">object</span> <span class="k">then</span> <span class="s1">&#39;}}\n&#39;</span> <span class="k">else</span> <span class="s1">&#39;}\n&#39;</span>
+    <span class="s2">&quot;$set_result${source_part}for ($for_part) {\n$var_part$body\n$@tab$close$@tab$return_result&quot;</span>
+
+<span class="nx">statement</span> <span class="nx">ForNode</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-116">#</a>               </div>               <h3>IfNode</h3>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-117">#</a>               </div>               <p><em>If/else</em> statements. Our <em>switch/when</em> will be compiled into this. Acts as an
+expression by pushing down requested returns to the last line of each clause.</p>
+
+<p>Single-expression <strong>IfNodes</strong> are compiled into ternary operators if possible,
+because ternaries are already proper expressions, and don't need conversion.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.IfNode: </span><span class="nx">class</span> <span class="nx">IfNode</span> <span class="k">extends</span> <span class="nx">BaseNode</span>
+  <span class="nv">type: </span><span class="s1">&#39;If&#39;</span>
+
+  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">condition</span><span class="p">,</span> <span class="nx">body</span><span class="p">,</span> <span class="nx">else_body</span><span class="p">,</span> <span class="nx">tags</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">condition: </span><span class="nx">condition</span>
+    <span class="err">@</span><span class="nv">body: </span>     <span class="nx">body</span> <span class="o">and</span> <span class="nx">body</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
+    <span class="err">@</span><span class="nv">else_body: </span><span class="nx">else_body</span> <span class="o">and</span> <span class="nx">else_body</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
+    <span class="err">@</span><span class="nv">children: </span> <span class="nx">compact</span> <span class="p">[</span><span class="err">@</span><span class="nx">condition</span><span class="p">,</span> <span class="err">@</span><span class="nx">body</span><span class="p">,</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">tags: </span>     <span class="nx">tags</span> <span class="o">or</span> <span class="p">{}</span>
+    <span class="err">@</span><span class="nv">multiple: </span> <span class="kc">true</span> <span class="k">if</span> <span class="err">@</span><span class="nx">condition</span> <span class="k">instanceof</span> <span class="nb">Array</span>
+    <span class="err">@</span><span class="nv">condition: </span><span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="k">new</span> <span class="nx">ParentheticalNode</span><span class="p">(</span><span class="err">@</span><span class="nx">condition</span><span class="p">))</span> <span class="k">if</span> <span class="err">@</span><span class="nx">tags</span><span class="p">.</span><span class="nx">invert</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-118">#</a>               </div>               <p>Add a new <em>else</em> clause to this <strong>IfNode</strong>, or push it down to the bottom
+of the chain recursively.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">push: </span><span class="p">(</span><span class="nx">else_body</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">eb: </span><span class="nx">else_body</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">else_body</span> <span class="k">then</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">eb</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nv">else_body: </span><span class="nx">eb</span>
+    <span class="k">this</span>
+
+  <span class="nv">force_statement: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">tags.statement: </span><span class="kc">true</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-119">#</a>               </div>               <p>Tag a chain of <strong>IfNodes</strong> with their object(s) to switch on for equality
+tests. <code>rewrite_switch</code> will perform the actual change at compile time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">rewrite_condition: </span><span class="p">(</span><span class="nx">expression</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">switcher: </span><span class="nx">expression</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-120">#</a>               </div>               <p>Rewrite a chain of <strong>IfNodes</strong> with their switch condition for equality.
+Ensure that the switch expression isn't evaluated more than once.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">rewrite_switch: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">assigner: </span><span class="err">@</span><span class="nx">switcher</span>
+    <span class="k">if</span> <span class="o">not</span> <span class="p">(</span><span class="err">@</span><span class="nx">switcher</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span> <span class="k">instanceof</span> <span class="nx">LiteralNode</span><span class="p">)</span>
+      <span class="nv">variable: </span><span class="nx">literal</span><span class="p">(</span><span class="nx">o</span><span class="p">.</span><span class="nx">scope</span><span class="p">.</span><span class="nx">free_variable</span><span class="p">())</span>
+      <span class="nv">assigner: </span><span class="k">new</span> <span class="nx">AssignNode</span><span class="p">(</span><span class="nx">variable</span><span class="p">,</span> <span class="err">@</span><span class="nx">switcher</span><span class="p">)</span>
+      <span class="err">@</span><span class="nv">switcher: </span><span class="nx">variable</span>
+    <span class="err">@</span><span class="nv">condition: </span><span class="k">if</span> <span class="err">@</span><span class="nx">multiple</span>
+      <span class="k">for</span> <span class="nx">cond</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="err">@</span><span class="nx">condition</span>
+        <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;is&#39;</span><span class="p">,</span> <span class="p">(</span><span class="k">if</span> <span class="nx">i</span> <span class="o">is</span> <span class="mi">0</span> <span class="k">then</span> <span class="nx">assigner</span> <span class="k">else</span> <span class="err">@</span><span class="nx">switcher</span><span class="p">),</span> <span class="nx">cond</span><span class="p">)</span>
+    <span class="k">else</span>
+      <span class="k">new</span> <span class="nx">OpNode</span><span class="p">(</span><span class="s1">&#39;is&#39;</span><span class="p">,</span> <span class="nx">assigner</span><span class="p">,</span> <span class="err">@</span><span class="nx">condition</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">rewrite_condition</span><span class="p">(</span><span class="err">@</span><span class="nx">switcher</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">is_chain</span><span class="p">()</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-121">#</a>               </div>               <p>Rewrite a chain of <strong>IfNodes</strong> to add a default case as the final <em>else</em>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">add_else: </span><span class="p">(</span><span class="nx">exprs</span><span class="p">,</span> <span class="nx">statement</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">is_chain</span><span class="p">()</span>
+      <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">add_else</span> <span class="nx">exprs</span><span class="p">,</span> <span class="nx">statement</span>
+    <span class="k">else</span>
+      <span class="nv">exprs: </span><span class="nx">exprs</span><span class="p">.</span><span class="nx">unwrap</span><span class="p">()</span> <span class="nx">unless</span> <span class="nx">statement</span>
+      <span class="err">@</span><span class="nx">children</span><span class="p">.</span><span class="nx">push</span> <span class="err">@</span><span class="nv">else_body: </span><span class="nx">exprs</span>
+    <span class="k">this</span></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-122">#</a>               </div>               <p>If the <code>else_body</code> is an <strong>IfNode</strong> itself, then we've got an <em>if-else</em> chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">is_chain: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">chain</span> <span class="o">||=</span> <span class="err">@</span><span class="nx">else_body</span> <span class="o">and</span> <span class="err">@</span><span class="nx">else_body</span> <span class="k">instanceof</span> <span class="nx">IfNode</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-123">#</a>               </div>               <p>The <strong>IfNode</strong> only compiles into a statement if either of its bodies needs
+to be a statement. Otherwise a ternary is safe.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">is_statement: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">statement</span> <span class="o">||=</span> <span class="o">!!</span><span class="p">(</span><span class="err">@</span><span class="nx">comment</span> <span class="o">or</span> <span class="err">@</span><span class="nx">tags</span><span class="p">.</span><span class="nx">statement</span> <span class="o">or</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()</span> <span class="o">or</span> <span class="p">(</span><span class="err">@</span><span class="nx">else_body</span> <span class="o">and</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">is_statement</span><span class="p">()))</span>
+
+  <span class="nv">compile_condition: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="p">(</span><span class="nx">cond</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">for</span> <span class="nx">cond</span> <span class="k">in</span> <span class="nx">flatten</span><span class="p">([</span><span class="err">@</span><span class="nx">condition</span><span class="p">])).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39; || &#39;</span><span class="p">)</span>
+
+  <span class="nv">compile_node: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">if</span> <span class="err">@</span><span class="nx">is_statement</span><span class="p">()</span> <span class="k">then</span> <span class="err">@</span><span class="nx">compile_statement</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="err">@</span><span class="nx">compile_ternary</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-124">#</a>               </div>               <p>Compile the <strong>IfNode</strong> as a regular <em>if-else</em> statement. Flattened chains
+force inner <em>else</em> bodies into statement form.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_statement: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">rewrite_switch</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">if</span> <span class="err">@</span><span class="nx">switcher</span>
+    <span class="nv">child: </span>       <span class="nx">del</span> <span class="nx">o</span><span class="p">,</span> <span class="s1">&#39;chain_child&#39;</span>
+    <span class="nv">cond_o: </span>      <span class="nx">merge</span> <span class="nx">o</span>
+    <span class="nx">del</span> <span class="nx">cond_o</span><span class="p">,</span> <span class="s1">&#39;returns&#39;</span>
+    <span class="nv">o.indent: </span>    <span class="err">@</span><span class="nx">idt</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
+    <span class="nv">o.top: </span>       <span class="kc">true</span>
+    <span class="nv">if_dent: </span>     <span class="k">if</span> <span class="nx">child</span> <span class="k">then</span> <span class="s1">&#39;&#39;</span> <span class="k">else</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span>
+    <span class="nv">com_dent: </span>    <span class="k">if</span> <span class="nx">child</span> <span class="k">then</span> <span class="err">@</span><span class="nx">idt</span><span class="p">()</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">prefix: </span>      <span class="k">if</span> <span class="err">@</span><span class="nx">comment</span> <span class="k">then</span> <span class="s2">&quot;${ @comment.compile(cond_o) }\n$com_dent&quot;</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+    <span class="nv">body: </span>        <span class="nx">Expressions</span><span class="p">.</span><span class="nx">wrap</span><span class="p">([</span><span class="err">@</span><span class="nx">body</span><span class="p">]).</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">if_part: </span>     <span class="s2">&quot;$prefix${if_dent}if (${ @compile_condition(cond_o) }) {\n$body\n$@tab}&quot;</span>
+    <span class="k">return</span> <span class="nx">if_part</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">else_body</span>
+    <span class="nv">else_part: </span><span class="k">if</span> <span class="err">@</span><span class="nx">is_chain</span><span class="p">()</span>
+      <span class="s1">&#39; else &#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">merge</span><span class="p">(</span><span class="nx">o</span><span class="p">,</span> <span class="p">{</span><span class="nv">indent: </span><span class="err">@</span><span class="nx">idt</span><span class="p">(),</span> <span class="nv">chain_child: </span><span class="kc">true</span><span class="p">}))</span>
+    <span class="k">else</span>
+      <span class="s2">&quot; else {\n${ Expressions.wrap([@else_body]).compile(o) }\n$@tab}&quot;</span>
+    <span class="s2">&quot;$if_part$else_part&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-125">#</a>               </div>               <p>Compile the IfNode as a ternary operator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compile_ternary: </span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">if_part: </span>   <span class="err">@</span><span class="nx">condition</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="o">+</span> <span class="s1">&#39; ? &#39;</span> <span class="o">+</span> <span class="err">@</span><span class="nx">body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span>
+    <span class="nv">else_part: </span> <span class="k">if</span> <span class="err">@</span><span class="nx">else_body</span> <span class="k">then</span> <span class="err">@</span><span class="nx">else_body</span><span class="p">.</span><span class="nx">compile</span><span class="p">(</span><span class="nx">o</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;null&#39;</span>
+    <span class="s2">&quot;$if_part : $else_part&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-126">#</a>               </div>               <h2>Constants</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-127">#</a>               </div>               <p>Tabs are two spaces for pretty printing.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">TAB: </span><span class="s1">&#39;  &#39;</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-128">#</a>               </div>               <p>Trim out all trailing whitespace, so that the generated code plays nice
+with Git.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">TRAILING_WHITESPACE: </span><span class="sr">/\s+$/gm</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-129">#</a>               </div>               <p>Keep this identifier regex in sync with the Lexer.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">IDENTIFIER: </span><span class="sr">/^[a-zA-Z$_](\w|\$)*$/</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-130">#</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-131">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-131">#</a>               </div>               <p>Merge objects, returning a fresh copy with attributes from both sides.
+Used every time <code>compile</code> is called, to allow properties in the options hash
+to propagate down the tree without polluting other branches.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">merge: </span><span class="p">(</span><span class="nx">options</span><span class="p">,</span> <span class="nx">overrides</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">fresh: </span><span class="p">{}</span>
+  <span class="p">(</span><span class="nx">fresh</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span><span class="o">:</span> <span class="nx">val</span><span class="p">)</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="nx">options</span>
+  <span class="p">(</span><span class="nx">fresh</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span><span class="o">:</span> <span class="nx">val</span><span class="p">)</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="nx">overrides</span> <span class="k">if</span> <span class="nx">overrides</span>
+  <span class="nx">fresh</span></pre></div>             </td>           </tr>                               <tr id="section-132">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-132">#</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">compact: </span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nx">item</span> <span class="k">for</span> <span class="nx">item</span> <span class="k">in</span> <span class="nx">array</span> <span class="k">when</span> <span class="nx">item</span></pre></div>             </td>           </tr>                               <tr id="section-133">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-133">#</a>               </div>               <p>Return a completely flattened version of an array. Handy for getting a
+list of <code>children</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">flatten: </span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">memo: </span><span class="p">[]</span>
+  <span class="k">for</span> <span class="nx">item</span> <span class="k">in</span> <span class="nx">array</span>
+    <span class="k">if</span> <span class="nx">item</span> <span class="k">instanceof</span> <span class="nb">Array</span> <span class="k">then</span> <span class="nv">memo: </span><span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="k">else</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span>
+  <span class="nx">memo</span></pre></div>             </td>           </tr>                               <tr id="section-134">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-134">#</a>               </div>               <p>Delete a key from an object, returning the value. Useful when a node is
+looking for a particular method in an options hash.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">del: </span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">val: </span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span>
+  <span class="k">delete</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span>
+  <span class="nx">val</span></pre></div>             </td>           </tr>                               <tr id="section-135">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-135">#</a>               </div>               <p>Handy helper for a generating LiteralNode.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">literal: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="k">new</span> <span class="nx">LiteralNode</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/optparse.html

@@ -0,0 +1,67 @@
+<!DOCTYPE html>  <html> <head>   <title>optparse.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               optparse.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>A simple <strong>OptionParser</strong> class to parse option flags from the command-line.
+Use it like so:</p>
+
+<pre><code>parser:  new OptionParser switches, help_banner
+options: parser.parse process.argv
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.OptionParser: </span><span class="nx">class</span> <span class="nx">OptionParser</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>Initialize with a list of valid options, in the form:</p>
+
+<pre><code>[short-flag, long-flag, description]
+</code></pre>
+
+<p>Along with an an optional banner for the usage help.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">rules</span><span class="p">,</span> <span class="nx">banner</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">banner: </span> <span class="nx">banner</span>
+    <span class="err">@</span><span class="nv">rules: </span>  <span class="nx">build_rules</span><span class="p">(</span><span class="nx">rules</span><span class="p">)</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>Parse the list of arguments, populating an <code>options</code> object with all of the
+specified options, and returning it. <code>options.arguments</code> will be an array
+containing the remaning non-option arguments. This is a simpler API than
+many option parsers that allow you to attach callback actions for every
+flag. Instead, you're responsible for interpreting the options object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">parse: </span><span class="p">(</span><span class="nx">args</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">options: </span><span class="p">{</span><span class="nv">arguments: </span><span class="p">[]}</span>
+    <span class="nv">args: </span><span class="nx">normalize_arguments</span> <span class="nx">args</span>
+    <span class="k">while</span> <span class="nv">arg: </span><span class="nx">args</span><span class="p">.</span><span class="nx">shift</span><span class="p">()</span>
+      <span class="nv">is_option: </span><span class="o">!!</span><span class="p">(</span><span class="nx">arg</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LONG_FLAG</span><span class="p">)</span> <span class="o">or</span> <span class="nx">arg</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">SHORT_FLAG</span><span class="p">))</span>
+      <span class="nv">matched_rule: </span><span class="kc">no</span>
+      <span class="k">for</span> <span class="nx">rule</span> <span class="k">in</span> <span class="err">@</span><span class="nx">rules</span>
+        <span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">short_flag</span> <span class="o">is</span> <span class="nx">arg</span> <span class="o">or</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">long_flag</span> <span class="o">is</span> <span class="nx">arg</span>
+          <span class="nx">options</span><span class="p">[</span><span class="nx">rule</span><span class="p">.</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">has_argument</span> <span class="k">then</span> <span class="nx">args</span><span class="p">.</span><span class="nx">shift</span><span class="p">()</span> <span class="k">else</span> <span class="kc">true</span>
+          <span class="nv">matched_rule: </span><span class="kc">yes</span>
+          <span class="k">break</span>
+      <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s2">&quot;unrecognized option: $arg&quot;</span> <span class="k">if</span> <span class="nx">is_option</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">matched_rule</span>
+      <span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">push</span> <span class="nx">arg</span> <span class="nx">unless</span> <span class="nx">is_option</span>
+    <span class="nx">options</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Return the help text for this <strong>OptionParser</strong>, listing and describing all
+of the valid options, for <code>--help</code> and such.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">help: </span><span class="o">-&gt;</span>
+    <span class="nv">lines: </span><span class="p">[</span><span class="s1">&#39;Available options:&#39;</span><span class="p">]</span>
+    <span class="nx">lines</span><span class="p">.</span><span class="nx">unshift</span> <span class="s2">&quot;$@banner\n&quot;</span> <span class="k">if</span> <span class="err">@</span><span class="nx">banner</span>
+    <span class="k">for</span> <span class="nx">rule</span> <span class="k">in</span> <span class="err">@</span><span class="nx">rules</span>
+      <span class="nv">spaces: </span>  <span class="mi">15</span> <span class="o">-</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">long_flag</span><span class="p">.</span><span class="nx">length</span>
+      <span class="nv">spaces: </span>  <span class="k">if</span> <span class="nx">spaces</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="k">then</span> <span class="p">(</span><span class="s1">&#39; &#39;</span> <span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">..</span><span class="nx">spaces</span><span class="p">]).</span><span class="nx">join</span><span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span>
+      <span class="nv">let_part: </span><span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">short_flag</span> <span class="k">then</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">short_flag</span> <span class="o">+</span> <span class="s1">&#39;, &#39;</span> <span class="k">else</span> <span class="s1">&#39;    &#39;</span>
+      <span class="nx">lines</span><span class="p">.</span><span class="nx">push</span> <span class="s2">&quot;  $let_part${rule.long_flag}$spaces${rule.description}&quot;</span>
+    <span class="s2">&quot;\n${ lines.join(&#39;\n&#39;) }\n&quot;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <h2>Helpers</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Regex matchers for option flags.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">LONG_FLAG: </span> <span class="sr">/^(--\w[\w\-]+)/</span>
+<span class="nv">SHORT_FLAG: </span><span class="sr">/^(-\w)/</span>
+<span class="nv">MULTI_FLAG: </span><span class="sr">/^-(\w{2,})/</span>
+<span class="nv">OPTIONAL: </span>  <span class="sr">/\[(.+)\]/</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Build and return the list of option rules. If the optional <em>short-flag</em> is
+unspecified, leave it out by padding with <code>null</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">build_rules: </span><span class="p">(</span><span class="nx">rules</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="k">for</span> <span class="nx">tuple</span> <span class="k">in</span> <span class="nx">rules</span>
+    <span class="nx">tuple</span><span class="p">.</span><span class="nx">unshift</span> <span class="kc">null</span> <span class="k">if</span> <span class="nx">tuple</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;</span> <span class="mi">3</span>
+    <span class="nx">build_rule</span> <span class="nx">tuple</span><span class="p">...</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Build a rule from a <code>-o</code> short flag, a <code>--output [DIR]</code> long flag, and the
+description of what the option does.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">build_rule: </span><span class="p">(</span><span class="nx">short_flag</span><span class="p">,</span> <span class="nx">long_flag</span><span class="p">,</span> <span class="nx">description</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">match: </span>     <span class="nx">long_flag</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">OPTIONAL</span><span class="p">)</span>
+  <span class="nv">long_flag: </span> <span class="nx">long_flag</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LONG_FLAG</span><span class="p">)[</span><span class="mi">1</span><span class="p">]</span>
+  <span class="p">{</span>
+    <span class="nv">name: </span>        <span class="nx">long_flag</span><span class="p">.</span><span class="nx">substr</span> <span class="mi">2</span>
+    <span class="nv">short_flag: </span>  <span class="nx">short_flag</span>
+    <span class="nv">long_flag: </span>   <span class="nx">long_flag</span>
+    <span class="nv">description: </span> <span class="nx">description</span>
+    <span class="nv">has_argument: </span><span class="o">!!</span><span class="p">(</span><span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Normalize arguments by expanding merged flags into multiple flags. This allows
+you to have <code>-wl</code> be the same as <code>--watch --lint</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">normalize_arguments: </span><span class="p">(</span><span class="nx">args</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nv">args: </span><span class="nx">args</span><span class="p">.</span><span class="nx">slice</span> <span class="mi">0</span>
+  <span class="nv">result: </span><span class="p">[]</span>
+  <span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="nx">args</span>
+    <span class="k">if</span> <span class="nv">match: </span><span class="nx">arg</span><span class="p">.</span><span class="nx">match</span> <span class="nx">MULTI_FLAG</span>
+      <span class="nx">result</span><span class="p">.</span><span class="nx">push</span> <span class="s1">&#39;-&#39;</span> <span class="o">+</span> <span class="nx">l</span> <span class="k">for</span> <span class="nx">l</span> <span class="k">in</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">split</span> <span class="s1">&#39;&#39;</span>
+    <span class="k">else</span>
+      <span class="nx">result</span><span class="p">.</span><span class="nx">push</span> <span class="nx">arg</span>
+  <span class="nx">result</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/repl.html

@@ -0,0 +1,20 @@
+<!DOCTYPE html>  <html> <head>   <title>repl.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               repl.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>A very simple Read-Eval-Print-Loop. Compiles one line at a time to JavaScript
+and evaluates it. Good for simple tests, or poking around the <strong>Node.js</strong> API.
+Using it looks like this:</p>
+
+<pre><code>coffee&gt; puts "$num bottles of beer" for num in [99..1]
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>Require the <strong>coffee-script</strong> module to get access to the compiler.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">CoffeeScript: </span><span class="nx">require</span> <span class="s1">&#39;coffee-script&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>Our prompt.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">prompt: </span><span class="s1">&#39;coffee&gt; &#39;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Quick alias for quitting the REPL.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nx">process</span><span class="p">.</span><span class="nx">mixin</span> <span class="p">{</span>
+  <span class="nv">quit: </span><span class="o">-&gt;</span> <span class="nx">process</span><span class="p">.</span><span class="nx">exit</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+<span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>The main REPL function. <strong>run</strong> is called every time a line of code is entered.
+Attempt to evaluate the command. If there's an exception, print it out instead
+of exiting.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">run: </span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="k">try</span>
+    <span class="nv">val: </span><span class="nx">CoffeeScript</span><span class="p">.</span><span class="nx">run</span> <span class="nx">code</span><span class="p">,</span> <span class="p">{</span><span class="nv">no_wrap: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">globals: </span><span class="kc">true</span><span class="p">,</span> <span class="nv">source: </span><span class="s1">&#39;repl&#39;</span><span class="p">}</span>
+    <span class="nx">p</span> <span class="nx">val</span> <span class="k">if</span> <span class="nx">val</span> <span class="o">isnt</span> <span class="kc">undefined</span>
+  <span class="k">catch</span> <span class="nx">err</span>
+    <span class="nx">puts</span> <span class="nx">err</span><span class="p">.</span><span class="nx">stack</span> <span class="o">or</span> <span class="nx">err</span><span class="p">.</span><span class="nx">toString</span><span class="p">()</span>
+  <span class="nx">print</span> <span class="nx">prompt</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Start up the REPL by opening <strong>stdio</strong> and listening for input.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">addListener</span> <span class="s1">&#39;data&#39;</span><span class="p">,</span> <span class="nx">run</span>
+<span class="nx">process</span><span class="p">.</span><span class="nx">stdio</span><span class="p">.</span><span class="nx">open</span><span class="p">()</span>
+<span class="nx">print</span> <span class="nx">prompt</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/rewriter.html

@@ -0,0 +1,191 @@
+<!DOCTYPE html>  <html> <head>   <title>rewriter.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               rewriter.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>The CoffeeScript language has a decent amount of optional syntax,
+implicit syntax, and shorthand syntax. These things can greatly complicate a
+grammar and bloat the resulting parse table. Instead of making the parser
+handle it all, we take a series of passes over the token stream,
+using this <strong>Rewriter</strong> to convert shorthand into the unambiguous long form,
+add implicit indentation and parentheses, balance incorrect nestings, and
+generally clean things up.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>Set up exported variables for both Node.js and the browser.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span> <span class="nx">unless</span> <span class="nx">process</span><span class="o">?</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>The <strong>Rewriter</strong> class is used by the <a href="lexer.html">Lexer</a>, directly against
+its internal array of tokens.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">exports.Rewriter: </span><span class="nx">class</span> <span class="nx">Rewriter</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Rewrite the token stream in multiple passes, one logical filter at
+a time. This could certainly be changed into a single pass through the
+stream, with a big ol' efficient switch, but it's much nicer to work with
+like this. The order of these passes matters -- indentation must be
+corrected before implicit parentheses can be wrapped around blocks of code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">rewrite: </span><span class="p">(</span><span class="nx">tokens</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nv">tokens: </span><span class="nx">tokens</span>
+    <span class="err">@</span><span class="nx">adjust_comments</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">remove_leading_newlines</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">remove_mid_expression_newlines</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">close_open_calls_and_indexes</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">add_implicit_indentation</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">add_implicit_parentheses</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">ensure_balance</span><span class="p">(</span><span class="nx">BALANCED_PAIRS</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">rewrite_closing_parens</span><span class="p">()</span>
+    <span class="err">@</span><span class="nx">tokens</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Rewrite the token stream, looking one token ahead and behind.
+Allow the return value of the block to tell us how many tokens to move
+forwards (or backwards) in the stream, to make sure we don't miss anything
+as tokens are inserted and removed, and the stream changes length under
+our feet.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">scan_tokens: </span><span class="p">(</span><span class="nx">block</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">i: </span><span class="mi">0</span>
+    <span class="k">while</span> <span class="kc">true</span>
+      <span class="k">break</span> <span class="nx">unless</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span>
+      <span class="nv">move: </span><span class="nx">block</span><span class="p">(</span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">],</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">],</span> <span class="nx">i</span><span class="p">)</span>
+      <span class="nx">i</span> <span class="o">+=</span> <span class="nx">move</span>
+    <span class="kc">true</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Massage newlines and indentations so that comments don't have to be
+correctly indented, or appear on a line of their own.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">adjust_comments: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
+      <span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;COMMENT&#39;</span>
+      <span class="nv">after: </span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">2</span><span class="p">]</span>
+      <span class="k">if</span> <span class="nx">after</span> <span class="o">and</span> <span class="nx">after</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span>
+        <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
+        <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">after</span><span class="p">)</span>
+        <span class="k">return</span> <span class="mi">1</span>
+      <span class="k">else</span> <span class="k">if</span> <span class="nx">prev</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;TERMINATOR&#39;</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;INDENT&#39;</span> <span class="o">and</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;OUTDENT&#39;</span>
+        <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s2">&quot;\n&quot;</span><span class="p">,</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
+        <span class="k">return</span> <span class="mi">2</span>
+      <span class="k">else</span>
+        <span class="k">return</span> <span class="mi">1</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Leading newlines would introduce an ambiguity in the grammar, so we
+dispatch them here.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">remove_leading_newlines: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">shift</span><span class="p">()</span> <span class="k">while</span> <span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Some blocks occur in the middle of expressions -- when we're expecting
+this, remove their trailing newlines.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">remove_mid_expression_newlines: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
+      <span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">post</span> <span class="o">and</span> <span class="nx">include</span><span class="p">(</span><span class="nx">EXPRESSION_CLOSE</span><span class="p">,</span> <span class="nx">post</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;TERMINATOR&#39;</span>
+      <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
+      <span class="k">return</span> <span class="mi">0</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>The lexer has tagged the opening parenthesis of a method call, and the
+opening bracket of an indexing operation. Match them with their paired
+close.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">close_open_calls_and_indexes: </span><span class="o">-&gt;</span>
+    <span class="nv">parens: </span>  <span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+    <span class="nv">brackets: </span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+    <span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
+      <span class="k">switch</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+        <span class="k">when</span> <span class="s1">&#39;CALL_START&#39;</span>  <span class="k">then</span> <span class="nx">parens</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+        <span class="k">when</span> <span class="s1">&#39;INDEX_START&#39;</span> <span class="k">then</span> <span class="nx">brackets</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
+        <span class="k">when</span> <span class="s1">&#39;(&#39;</span>           <span class="k">then</span> <span class="nx">parens</span><span class="p">[</span><span class="nx">parens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span>
+        <span class="k">when</span> <span class="s1">&#39;[&#39;</span>           <span class="k">then</span> <span class="nx">brackets</span><span class="p">[</span><span class="nx">brackets</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span>
+        <span class="k">when</span> <span class="s1">&#39;)&#39;</span>
+          <span class="k">if</span> <span class="nx">parens</span><span class="p">[</span><span class="nx">parens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">is</span> <span class="mi">0</span>
+            <span class="nx">parens</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+            <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;CALL_END&#39;</span>
+          <span class="k">else</span>
+            <span class="nx">parens</span><span class="p">[</span><span class="nx">parens</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">-=</span> <span class="mi">1</span>
+        <span class="k">when</span> <span class="s1">&#39;]&#39;</span>
+          <span class="k">if</span> <span class="nx">brackets</span><span class="p">[</span><span class="nx">brackets</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">==</span> <span class="mi">0</span>
+            <span class="nx">brackets</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+            <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;INDEX_END&#39;</span>
+          <span class="k">else</span>
+            <span class="nx">brackets</span><span class="p">[</span><span class="nx">brackets</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">-=</span> <span class="mi">1</span>
+      <span class="k">return</span> <span class="mi">1</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Methods may be optionally called without parentheses, for simple cases.
+Insert the implicit parentheses here, so that the parser doesn't have to
+deal with them.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">add_implicit_parentheses: </span><span class="o">-&gt;</span>
+    <span class="nv">stack: </span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+    <span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
+      <span class="nv">tag: </span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+      <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span> <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span>
+      <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;OUTDENT&#39;</span>
+        <span class="nv">last: </span><span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+        <span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">+=</span> <span class="nx">last</span>
+      <span class="k">if</span> <span class="o">!</span><span class="nx">post</span><span class="o">?</span> <span class="o">or</span> <span class="nx">include</span> <span class="nx">IMPLICIT_END</span><span class="p">,</span> <span class="nx">tag</span>
+        <span class="k">return</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span> <span class="o">and</span> <span class="nx">prev</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">IMPLICIT_BLOCK</span><span class="p">,</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+        <span class="k">if</span> <span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="o">or</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span>
+          <span class="nv">idx: </span><span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;OUTDENT&#39;</span> <span class="k">then</span> <span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span> <span class="k">else</span> <span class="nx">i</span>
+          <span class="nv">stack_pointer: </span><span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span> <span class="k">then</span> <span class="mi">2</span> <span class="k">else</span> <span class="mi">1</span>
+          <span class="k">for</span> <span class="nx">tmp</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">stack_pointer</span><span class="p">]]</span>
+            <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">idx</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;CALL_END&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
+          <span class="nv">size: </span><span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">stack_pointer</span><span class="p">]</span> <span class="o">+</span> <span class="mi">1</span>
+          <span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">stack_pointer</span><span class="p">]</span><span class="o">:</span> <span class="mi">0</span>
+          <span class="k">return</span> <span class="nx">size</span>
+      <span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">prev</span> <span class="o">and</span> <span class="nx">include</span><span class="p">(</span><span class="nx">IMPLICIT_FUNC</span><span class="p">,</span> <span class="nx">prev</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span> <span class="nx">include</span> <span class="nx">IMPLICIT_CALL</span><span class="p">,</span> <span class="nx">tag</span>
+      <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;CALL_START&#39;</span><span class="p">,</span> <span class="s1">&#39;(&#39;</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
+      <span class="nx">stack</span><span class="p">[</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span>
+      <span class="k">return</span> <span class="mi">2</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>Because our grammar is LALR(1), it can't handle some single-line
+expressions that lack ending delimiters. The <strong>Rewriter</strong> adds the implicit
+blocks, so it doesn't need to. ')' can close a single-line block,
+but we need to make sure it's balanced.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">add_implicit_indentation: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
+      <span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">include</span><span class="p">(</span><span class="nx">SINGLE_LINERS</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span>
+        <span class="nx">post</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;INDENT&#39;</span> <span class="o">and</span>
+        <span class="o">not</span> <span class="p">(</span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;ELSE&#39;</span> <span class="o">and</span> <span class="nx">post</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;IF&#39;</span><span class="p">)</span>
+      <span class="nv">starter: </span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+      <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
+      <span class="nv">idx: </span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span>
+      <span class="nv">parens: </span><span class="mi">0</span>
+      <span class="k">while</span> <span class="kc">true</span>
+        <span class="nx">idx</span> <span class="o">+=</span> <span class="mi">1</span>
+        <span class="nv">tok: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">idx</span><span class="p">]</span>
+        <span class="nv">pre: </span><span class="err">@</span><span class="nx">tokens</span><span class="p">[</span><span class="nx">idx</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span>
+        <span class="k">if</span> <span class="p">(</span><span class="o">not</span> <span class="nx">tok</span> <span class="o">or</span>
+            <span class="p">(</span><span class="nx">include</span><span class="p">(</span><span class="nx">SINGLE_CLOSERS</span><span class="p">,</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">and</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">isnt</span> <span class="s1">&#39;;&#39;</span><span class="p">)</span> <span class="o">or</span>
+            <span class="p">(</span><span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;)&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">parens</span> <span class="o">is</span> <span class="mi">0</span><span class="p">))</span> <span class="o">and</span>
+            <span class="o">not</span> <span class="p">(</span><span class="nx">starter</span> <span class="o">is</span> <span class="s1">&#39;ELSE&#39;</span> <span class="o">and</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">)</span>
+          <span class="nv">insertion: </span><span class="k">if</span> <span class="nx">pre</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s2">&quot;,&quot;</span> <span class="k">then</span> <span class="nx">idx</span> <span class="o">-</span> <span class="mi">1</span> <span class="k">else</span> <span class="nx">idx</span>
+          <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">insertion</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="nx">token</span><span class="p">[</span><span class="mi">2</span><span class="p">]])</span>
+          <span class="k">break</span>
+        <span class="nx">parens</span> <span class="o">+=</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;(&#39;</span>
+        <span class="nx">parens</span> <span class="o">-=</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tok</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;)&#39;</span>
+      <span class="k">return</span> <span class="mi">1</span> <span class="nx">unless</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="s1">&#39;THEN&#39;</span>
+      <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
+      <span class="k">return</span> <span class="mi">0</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p>Ensure that all listed pairs of tokens are correctly balanced throughout
+the course of the token stream.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">ensure_balance: </span><span class="p">(</span><span class="nx">pairs</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nv">levels: </span><span class="p">{}</span>
+    <span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
+      <span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">pairs</span>
+        <span class="p">[</span><span class="nx">open</span><span class="p">,</span> <span class="nx">close</span><span class="p">]</span><span class="o">:</span> <span class="nx">pair</span>
+        <span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span> <span class="o">||=</span> <span class="mi">0</span>
+        <span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="nx">open</span>
+        <span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span> <span class="o">-=</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">is</span> <span class="nx">close</span>
+        <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="p">(</span><span class="s2">&quot;too many ${token[1]} on line ${token[2] + 1}&quot;</span><span class="p">)</span> <span class="k">if</span> <span class="nx">levels</span><span class="p">[</span><span class="nx">open</span><span class="p">]</span> <span class="o">&lt;</span> <span class="mi">0</span>
+      <span class="k">return</span> <span class="mi">1</span>
+    <span class="nv">unclosed: </span><span class="nx">key</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">value</span> <span class="k">of</span> <span class="nx">levels</span> <span class="k">when</span> <span class="nx">value</span> <span class="o">&gt;</span> <span class="mi">0</span>
+    <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="p">(</span><span class="s2">&quot;unclosed ${unclosed[0]}&quot;</span><span class="p">)</span> <span class="k">if</span> <span class="nx">unclosed</span><span class="p">.</span><span class="nx">length</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>We'd like to support syntax like this:</p>
+
+<pre><code>el.click((event) -&gt;
+  el.hide())
+</code></pre>
+
+<p>In order to accomplish this, move outdents that follow closing parens
+inwards, safely. The steps to accomplish this are:</p>
+
+<ol>
+<li>Check that all paired tokens are balanced and in order.</li>
+<li>Rewrite the stream with a stack: if you see an '(' or INDENT, add it
+to the stack. If you see an ')' or OUTDENT, pop the stack and replace
+it with the inverse of what we've just popped.</li>
+<li>Keep track of "debt" for tokens that we fake, to make sure we end
+up balanced in the end.</li>
+</ol>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">rewrite_closing_parens: </span><span class="o">-&gt;</span>
+    <span class="nv">stack: </span><span class="p">[]</span>
+    <span class="nv">debt: </span> <span class="p">{}</span>
+    <span class="p">(</span><span class="nx">debt</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span><span class="o">:</span> <span class="mi">0</span><span class="p">)</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="nx">INVERSES</span>
+    <span class="err">@</span><span class="nx">scan_tokens</span> <span class="p">(</span><span class="nx">prev</span><span class="p">,</span> <span class="nx">token</span><span class="p">,</span> <span class="nx">post</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="o">=&gt;</span>
+      <span class="nv">tag: </span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+      <span class="nv">inv: </span><span class="nx">INVERSES</span><span class="p">[</span><span class="nx">token</span><span class="p">[</span><span class="mi">0</span><span class="p">]]</span>
+      <span class="k">if</span> <span class="nx">include</span> <span class="nx">EXPRESSION_START</span><span class="p">,</span> <span class="nx">tag</span>
+        <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span> <span class="nx">token</span>
+        <span class="k">return</span> <span class="mi">1</span>
+      <span class="k">else</span> <span class="k">if</span> <span class="nx">include</span> <span class="nx">EXPRESSION_END</span><span class="p">,</span> <span class="nx">tag</span>
+        <span class="k">if</span> <span class="nx">debt</span><span class="p">[</span><span class="nx">inv</span><span class="p">]</span> <span class="o">&gt;</span> <span class="mi">0</span>
+          <span class="nx">debt</span><span class="p">[</span><span class="nx">inv</span><span class="p">]</span> <span class="o">-=</span> <span class="mi">1</span>
+          <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span> <span class="nx">i</span><span class="p">,</span> <span class="mi">1</span>
+          <span class="k">return</span> <span class="mi">0</span>
+        <span class="k">else</span>
+          <span class="nv">match: </span><span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">()</span>
+          <span class="nv">mtag: </span> <span class="nx">match</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+          <span class="k">return</span> <span class="mi">1</span> <span class="k">if</span> <span class="nx">tag</span> <span class="o">is</span> <span class="nx">INVERSES</span><span class="p">[</span><span class="nx">mtag</span><span class="p">]</span>
+          <span class="nx">debt</span><span class="p">[</span><span class="nx">mtag</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span>
+          <span class="nv">val: </span><span class="k">if</span> <span class="nx">mtag</span> <span class="o">is</span> <span class="s1">&#39;INDENT&#39;</span> <span class="k">then</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">else</span> <span class="nx">INVERSES</span><span class="p">[</span><span class="nx">mtag</span><span class="p">]</span>
+          <span class="err">@</span><span class="nx">tokens</span><span class="p">.</span><span class="nx">splice</span> <span class="nx">i</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[</span><span class="nx">INVERSES</span><span class="p">[</span><span class="nx">mtag</span><span class="p">],</span> <span class="nx">val</span><span class="p">]</span>
+          <span class="k">return</span> <span class="mi">1</span>
+      <span class="k">else</span>
+        <span class="k">return</span> <span class="mi">1</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <h2>Constants</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-15">#</a>               </div>               <p>List of the token pairs that must be balanced.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">BALANCED_PAIRS: </span><span class="p">[[</span><span class="s1">&#39;(&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;[&#39;</span><span class="p">,</span> <span class="s1">&#39;]&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;{&#39;</span><span class="p">,</span> <span class="s1">&#39;}&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">],</span>
+  <span class="p">[</span><span class="s1">&#39;PARAM_START&#39;</span><span class="p">,</span> <span class="s1">&#39;PARAM_END&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;CALL_START&#39;</span><span class="p">,</span> <span class="s1">&#39;CALL_END&#39;</span><span class="p">],</span>
+  <span class="p">[</span><span class="s1">&#39;INDEX_START&#39;</span><span class="p">,</span> <span class="s1">&#39;INDEX_END&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;SOAKED_INDEX_START&#39;</span><span class="p">,</span> <span class="s1">&#39;SOAKED_INDEX_END&#39;</span><span class="p">]]</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-16">#</a>               </div>               <p>The inverse mappings of <code>BALANCED_PAIRS</code> we're trying to fix up, so we can
+look things up from either end.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">INVERSES: </span><span class="p">{}</span>
+<span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">BALANCED_PAIRS</span>
+  <span class="nx">INVERSES</span><span class="p">[</span><span class="nx">pair</span><span class="p">[</span><span class="mi">0</span><span class="p">]]</span><span class="o">:</span> <span class="nx">pair</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
+  <span class="nx">INVERSES</span><span class="p">[</span><span class="nx">pair</span><span class="p">[</span><span class="mi">1</span><span class="p">]]</span><span class="o">:</span> <span class="nx">pair</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-17">#</a>               </div>               <p>The tokens that signal the start of a balanced pair.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">EXPRESSION_START: </span><span class="nx">pair</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">BALANCED_PAIRS</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-18">#</a>               </div>               <p>The tokens that signal the end of a balanced pair.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">EXPRESSION_END: </span>  <span class="nx">pair</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="k">for</span> <span class="nx">pair</span> <span class="k">in</span> <span class="nx">BALANCED_PAIRS</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-19">#</a>               </div>               <p>Tokens that indicate the close of a clause of an expression.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">EXPRESSION_CLOSE: </span><span class="p">[</span><span class="s1">&#39;CATCH&#39;</span><span class="p">,</span> <span class="s1">&#39;WHEN&#39;</span><span class="p">,</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s1">&#39;FINALLY&#39;</span><span class="p">].</span><span class="nx">concat</span> <span class="nx">EXPRESSION_END</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-20">#</a>               </div>               <p>Tokens that, if followed by an <code>IMPLICIT_CALL</code>, indicate a function invocation.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">IMPLICIT_FUNC: </span> <span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="s1">&#39;SUPER&#39;</span><span class="p">,</span> <span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="s1">&#39;CALL_END&#39;</span><span class="p">,</span> <span class="s1">&#39;]&#39;</span><span class="p">,</span> <span class="s1">&#39;INDEX_END&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-21">#</a>               </div>               <p>If preceded by an <code>IMPLICIT_FUNC</code>, indicates a function invocation.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">IMPLICIT_CALL: </span> <span class="p">[</span><span class="s1">&#39;IDENTIFIER&#39;</span><span class="p">,</span> <span class="s1">&#39;NUMBER&#39;</span><span class="p">,</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span> <span class="s1">&#39;JS&#39;</span><span class="p">,</span> <span class="s1">&#39;REGEX&#39;</span><span class="p">,</span> <span class="s1">&#39;NEW&#39;</span><span class="p">,</span> <span class="s1">&#39;PARAM_START&#39;</span><span class="p">,</span>
+                 <span class="s1">&#39;TRY&#39;</span><span class="p">,</span> <span class="s1">&#39;DELETE&#39;</span><span class="p">,</span> <span class="s1">&#39;TYPEOF&#39;</span><span class="p">,</span> <span class="s1">&#39;SWITCH&#39;</span><span class="p">,</span>
+                 <span class="s1">&#39;TRUE&#39;</span><span class="p">,</span> <span class="s1">&#39;FALSE&#39;</span><span class="p">,</span> <span class="s1">&#39;YES&#39;</span><span class="p">,</span> <span class="s1">&#39;NO&#39;</span><span class="p">,</span> <span class="s1">&#39;ON&#39;</span><span class="p">,</span> <span class="s1">&#39;OFF&#39;</span><span class="p">,</span> <span class="s1">&#39;!&#39;</span><span class="p">,</span> <span class="s1">&#39;!!&#39;</span><span class="p">,</span> <span class="s1">&#39;NOT&#39;</span><span class="p">,</span>
+                 <span class="s1">&#39;@&#39;</span><span class="p">,</span> <span class="s1">&#39;-&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;=&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;[&#39;</span><span class="p">,</span> <span class="s1">&#39;(&#39;</span><span class="p">,</span> <span class="s1">&#39;{&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-22">#</a>               </div>               <p>Tokens indicating that the implicit call must enclose a block of expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">IMPLICIT_BLOCK: </span><span class="p">[</span><span class="s1">&#39;-&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;=&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;{&#39;</span><span class="p">,</span> <span class="s1">&#39;[&#39;</span><span class="p">,</span> <span class="s1">&#39;,&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-23">#</a>               </div>               <p>Tokens that always mark the end of an implicit call for single-liners.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">IMPLICIT_END: </span>  <span class="p">[</span><span class="s1">&#39;IF&#39;</span><span class="p">,</span> <span class="s1">&#39;UNLESS&#39;</span><span class="p">,</span> <span class="s1">&#39;FOR&#39;</span><span class="p">,</span> <span class="s1">&#39;WHILE&#39;</span><span class="p">,</span> <span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s1">&#39;INDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-24">#</a>               </div>               <p>Single-line flavors of block expressions that have unclosed endings.
+The grammar can't disambiguate them, so we insert the implicit indentation.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">SINGLE_LINERS: </span><span class="p">[</span><span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s2">&quot;-&gt;&quot;</span><span class="p">,</span> <span class="s2">&quot;=&gt;&quot;</span><span class="p">,</span> <span class="s1">&#39;TRY&#39;</span><span class="p">,</span> <span class="s1">&#39;FINALLY&#39;</span><span class="p">,</span> <span class="s1">&#39;THEN&#39;</span><span class="p">]</span>
+<span class="nv">SINGLE_CLOSERS: </span><span class="p">[</span><span class="s1">&#39;TERMINATOR&#39;</span><span class="p">,</span> <span class="s1">&#39;CATCH&#39;</span><span class="p">,</span> <span class="s1">&#39;FINALLY&#39;</span><span class="p">,</span> <span class="s1">&#39;ELSE&#39;</span><span class="p">,</span> <span class="s1">&#39;OUTDENT&#39;</span><span class="p">,</span> <span class="s1">&#39;LEADING_WHEN&#39;</span><span class="p">]</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-25">#</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-26">#</a>               </div>               <p>Does a list include a value?</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="nv">include: </span><span class="p">(</span><span class="nx">list</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="o">-&gt;</span>
+  <span class="nx">list</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/docs/scope.html

@@ -0,0 +1,42 @@
+<!DOCTYPE html>  <html> <head>   <title>scope.coffee</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>            <div id="jump_to">         Jump To &hellip;         <div id="jump_wrapper">           <div id="jump_page">                                           <a class="source" href="cake.html">                 cake.coffee               </a>                                           <a class="source" href="coffee-script.html">                 coffee-script.coffee               </a>                                           <a class="source" href="command.html">                 command.coffee               </a>                                           <a class="source" href="grammar.html">                 grammar.coffee               </a>                                           <a class="source" href="lexer.html">                 lexer.coffee               </a>                                           <a class="source" href="nodes.html">                 nodes.coffee               </a>                                           <a class="source" href="optparse.html">                 optparse.coffee               </a>                                           <a class="source" href="repl.html">                 repl.coffee               </a>                                           <a class="source" href="rewriter.html">                 rewriter.coffee               </a>                                           <a class="source" href="scope.html">                 scope.coffee               </a>                        </div>         </div>       </div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               scope.coffee             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <p>The <strong>Scope</strong> class regulates lexical scoping within CoffeeScript. As you
+generate code, you create a tree of scopes in the same shape as the nested
+function bodies. Each scope knows about the variables declared within it,
+and has a reference to its parent enclosing scope. In this way, we know which
+variables are new and need to be declared with <code>var</code>, and which are shared
+with the outside.</p>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <p>Set up exported variables for both <strong>Node.js</strong> and the browser.</p>             </td>             <td class="code">               <div class="highlight"><pre><span class="k">this</span><span class="p">.</span><span class="nv">exports: </span><span class="k">this</span> <span class="nx">unless</span> <span class="nx">process</span><span class="o">?</span>
+
+<span class="nv">exports.Scope: </span><span class="nx">class</span> <span class="nx">Scope</span></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>Initialize a scope with its parent, for lookups up the chain,
+as well as a reference to the <strong>Expressions</strong> node is belongs to, which is
+where it should declare its variables, and a reference to the function that
+it wraps.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">constructor: </span><span class="p">(</span><span class="nx">parent</span><span class="p">,</span> <span class="nx">expressions</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="p">[</span><span class="err">@</span><span class="nx">parent</span><span class="p">,</span> <span class="err">@</span><span class="nx">expressions</span><span class="p">,</span> <span class="err">@</span><span class="nx">method</span><span class="p">]</span><span class="o">:</span> <span class="p">[</span><span class="nx">parent</span><span class="p">,</span> <span class="nx">expressions</span><span class="p">,</span> <span class="nx">method</span><span class="p">]</span>
+    <span class="err">@</span><span class="nv">variables: </span><span class="p">{}</span>
+    <span class="err">@</span><span class="nv">temp_var: </span><span class="k">if</span> <span class="err">@</span><span class="nx">parent</span> <span class="k">then</span> <span class="err">@</span><span class="nx">parent</span><span class="p">.</span><span class="nx">temp_var</span> <span class="k">else</span> <span class="s1">&#39;_a&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Look up a variable name in lexical scope, and declare it if it does not
+already exist.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">find: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="err">@</span><span class="nx">check</span> <span class="nx">name</span>
+    <span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;var&#39;</span>
+    <span class="kc">false</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Reserve a variable name as originating from a function parameter for this
+scope. No <code>var</code> required for internal references.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">parameter: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;param&#39;</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Just check to see if a variable has already been declared, without reserving.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">check: </span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="kc">true</span> <span class="k">if</span> <span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span>
+    <span class="o">!!</span><span class="p">(</span><span class="err">@</span><span class="nx">parent</span> <span class="o">and</span> <span class="err">@</span><span class="nx">parent</span><span class="p">.</span><span class="nx">check</span><span class="p">(</span><span class="nx">name</span><span class="p">))</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>If we need to store an intermediate result, find an available name for a
+compiler-generated variable. <code>_a</code>, <code>_b</code>, and so on...</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">free_variable: </span><span class="o">-&gt;</span>
+    <span class="k">while</span> <span class="err">@</span><span class="nx">check</span> <span class="err">@</span><span class="nx">temp_var</span>
+      <span class="nv">ordinal: </span><span class="mi">1</span> <span class="o">+</span> <span class="nb">parseInt</span> <span class="err">@</span><span class="nx">temp_var</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">1</span><span class="p">),</span> <span class="mi">36</span>
+      <span class="err">@</span><span class="nv">temp_var: </span><span class="s1">&#39;_&#39;</span> <span class="o">+</span> <span class="nx">ordinal</span><span class="p">.</span><span class="nx">toString</span><span class="p">(</span><span class="mi">36</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\d/g</span><span class="p">,</span> <span class="s1">&#39;a&#39;</span><span class="p">)</span>
+    <span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="err">@</span><span class="nx">temp_var</span><span class="p">]</span><span class="o">:</span> <span class="s1">&#39;var&#39;</span>
+    <span class="err">@</span><span class="nx">temp_var</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Ensure that an assignment is made at the top of this scope
+(or at the top-level scope, if requested).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">assign: </span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">top_level</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="k">return</span> <span class="err">@</span><span class="nx">parent</span><span class="p">.</span><span class="nx">assign</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">top_level</span><span class="p">)</span> <span class="k">if</span> <span class="nx">top_level</span> <span class="o">and</span> <span class="err">@</span><span class="nx">parent</span>
+    <span class="err">@</span><span class="nx">variables</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span><span class="o">:</span> <span class="p">{</span><span class="nv">value: </span><span class="nx">value</span><span class="p">,</span> <span class="nv">assigned: </span><span class="kc">true</span><span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>Does this scope reference any variables that need to be declared in the
+given function body?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">has_declarations: </span><span class="p">(</span><span class="nx">body</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">body</span> <span class="o">is</span> <span class="err">@</span><span class="nx">expressions</span> <span class="o">and</span> <span class="err">@</span><span class="nx">declared_variables</span><span class="p">().</span><span class="nx">length</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Does this scope reference any assignments that need to be declared at the
+top of the given function body?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">has_assignments: </span><span class="p">(</span><span class="nx">body</span><span class="p">)</span> <span class="o">-&gt;</span>
+    <span class="nx">body</span> <span class="o">is</span> <span class="err">@</span><span class="nx">expressions</span> <span class="o">and</span> <span class="err">@</span><span class="nx">assigned_variables</span><span class="p">().</span><span class="nx">length</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>Return the list of variables first declared in this scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">declared_variables: </span><span class="o">-&gt;</span>
+    <span class="p">(</span><span class="nx">key</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="err">@</span><span class="nx">variables</span> <span class="k">when</span> <span class="nx">val</span> <span class="o">is</span> <span class="s1">&#39;var&#39;</span><span class="p">).</span><span class="nx">sort</span><span class="p">()</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p>Return the list of assignments that are supposed to be made at the top
+of this scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">assigned_variables: </span><span class="o">-&gt;</span>
+    <span class="s2">&quot;$key = ${val.value}&quot;</span> <span class="k">for</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">val</span> <span class="k">of</span> <span class="err">@</span><span class="nx">variables</span> <span class="k">when</span> <span class="nx">val</span><span class="p">.</span><span class="nx">assigned</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>Compile the JavaScript for all of the variable declarations in this scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compiled_declarations: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">declared_variables</span><span class="p">().</span><span class="nx">join</span> <span class="s1">&#39;, &#39;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <p>Compile the JavaScript for all of the variable assignments in this scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nv">compiled_assignments: </span><span class="o">-&gt;</span>
+    <span class="err">@</span><span class="nx">assigned_variables</span><span class="p">().</span><span class="nx">join</span> <span class="s1">&#39;, &#39;</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 

documentation/index.html.erb

@@ -1,7 +1,7 @@
 <%
   require 'uv'
   def code_for(file, executable=false)
-    @stripper ||= /(\A\(function\(\)\{\n|\}\)\(\);\Z|^  )/
+    @stripper ||= /(\A\(function\(\)\{\n|\}\)\(\);\n*\Z|^  )/
     return '' unless File.exists?("documentation/js/#{file}.js")
     cs = File.read("documentation/coffee/#{file}.coffee")
     js = File.read("documentation/js/#{file}.js").gsub(@stripper, '')
@@ -22,12 +22,91 @@
   <title>CoffeeScript</title>
   <link rel="stylesheet" type="text/css" href="documentation/css/docs.css" />
   <link rel="stylesheet" type="text/css" href="documentation/css/idle.css" />
+  <link rel="shortcut icon" href="documentation/images/favicon.ico" />
 </head>
-<body>
+<body class="minimized">
+
+  <div id="fadeout"></div>
+
+  <div id="flybar">
+    <a id="logo" href="#top"> </a>
+    <div class="navigation toc">
+      <div class="button">
+        Table of Contents
+      </div>
+      <div class="contents">
+        <a href="#overview">Mini Overview</a>
+        <a href="#installation">Installation and Usage</a>
+        <a href="#language">Language Reference</a>
+        <a href="#whitespace">Significant Whitespace</a>
+        <a href="#functions">Functions and Invocation</a>
+        <a href="#assignment">Assignment</a>
+        <a href="#objects_and_arrays">Objects and Arrays</a>
+        <a href="#lexical_scope">Lexical Scoping and Variable Safety</a>
+        <a href="#conditionals">Conditionals, Ternaries, and Conditional Assignment</a>
+        <a href="#aliases">Aliases</a>
+        <a href="#splats">Splats...</a>
+        <a href="#arguments">Arguments are Arrays</a>
+        <a href="#while">While Loops</a>
+        <a href="#comprehensions">Comprehensions (Arrays, Objects, and Ranges)</a>
+        <a href="#slice_splice">Array Slicing and Splicing with Ranges</a>
+        <a href="#expressions">Everything is an Expression</a>
+        <a href="#existence">The Existential Operator</a>
+        <a href="#classes">Classes, Inheritance, and Super</a>
+        <a href="#pattern_matching">Pattern Matching</a>
+        <a href="#fat_arrow">Function Binding</a>
+        <a href="#embedded">Embedded JavaScript</a>
+        <a href="#switch">Switch/When/Else</a>
+        <a href="#try">Try/Catch/Finally</a>
+        <a href="#comparisons">Chained Comparisons</a>
+        <a href="#strings">Multiline Strings and Heredocs</a>
+        <a href="#interpolation">String Interpolation</a>
+        <a href="#cake">Cake, and Cakefiles</a>
+        <a href="#scripts">"text/coffeescript" Script Tags</a>
+        <a href="#resources">Resources</a>
+        <a href="#change_log">Change Log</a>
+      </div>
+    </div>
+    <div class="navigation try">
+      <div class="button">
+        Try CoffeeScript
+      </div>
+      <div class="contents repl_wrapper">
+        <div class="code">
+          <div id="repl_source_wrap"><textarea id="repl_source">reverse: (string) ->
+  string.split('').reverse().join ''
+
+alert reverse '!tpircseeffoC'</textarea></div>
+          <pre id="repl_results"></pre>
+          <button class="full_screen">go full screen</button>
+          <button class="minimize">minimize</button>
+          <button class="run">run</button>
+          <br class="clear" />
+        </div>
+      </div>
+    </div>
+    <div class="navigation annotated">
+      <div class="button">
+        Annotated Source
+      </div>
+      <div class="contents">
+        <a href="documentation/docs/grammar.html">The Grammar &mdash; src/grammar</a>
+        <a href="documentation/docs/lexer.html">The Lexer &mdash; src/lexer</a>
+        <a href="documentation/docs/rewriter.html">The Rewriter &mdash; src/rewriter</a>
+        <a href="documentation/docs/nodes.html">The Syntax Tree &mdash; src/nodes</a>
+        <a href="documentation/docs/scope.html">Lexical Scope &mdash; src/scope</a>
+        <a href="documentation/docs/coffee-script.html">The CoffeeScript Module &mdash; src/coffee-script</a>
+        <a href="documentation/docs/cake.html">Cake &amp; Cakefiles &mdash; src/cake</a>
+        <a href="documentation/docs/command.html">"coffee" Command-Line Utility &mdash; src/command</a>
+        <a href="documentation/docs/optparse.html">Option Parsing &mdash; src/optparse</a>
+        <a href="documentation/docs/repl.html">Interactive REPL &mdash; src/repl</a>
+      </div>
+    </div>
+    <div id="error" style="display:none;"></div>
+  </div>
 
   <div class="container">
-
-    <h1><sub style="font-size: 100px;">&#9749;</sub> CoffeeScript</h1>
+    <span class="bookmark" id="top"></span>
 
     <p>
       CoffeeScript is a little language that compiles into JavaScript. Think
@@ -39,8 +118,7 @@
 
     <p>
       <b>Disclaimer:</b>
-      CoffeeScript is just for fun and seriously alpha. I'm sure that there are still
-      plenty of holes in the walls and leaks in the roof. <i>There are no guarantees
+      CoffeeScript is just for fun. Until it reaches 1.0, <i>there are no guarantees
       that the syntax won't change between versions.</i> That said,
       it compiles into clean JavaScript (the good parts) that can use existing
       JavaScript libraries seamlessly, and passes through
@@ -51,41 +129,13 @@
 
     <p>
       <b>Latest Version:</b>
-      <a href="http://gemcutter.org/gems/coffee-script">0.3.2</a>
+      <a href="http://github.com/jashkenas/coffee-script/tarball/0.5.5">0.5.5</a>
     </p>
 
-    <h2>Table of Contents</h2>
-
-    <p>
-      <a href="#overview">Mini Overview</a><br />
-      <a href="#installation">Installation and Usage</a><br />
-      <a href="#whitespace">Significant Whitespace</a><br />
-      <a href="#functions">Functions and Invocation</a><br />
-      <a href="#assignment">Assignment</a><br />
-      <a href="#objects_and_arrays">Objects and Arrays</a><br />
-      <a href="#lexical_scope">Lexical Scoping and Variable Safety</a><br />
-      <a href="#conditionals">Conditionals, Ternaries, and Conditional Assignment</a><br />
-      <a href="#aliases">Aliases</a><br />
-      <a href="#splats">Splats...</a><br />
-      <a href="#arguments">Arguments are Arrays</a><br />
-      <a href="#while">While Loops</a><br />
-      <a href="#comprehensions">Comprehensions (Arrays, Objects, and Ranges)</a><br />
-      <a href="#slice_splice">Array Slicing and Splicing with Ranges</a><br />
-      <a href="#expressions">Everything is an Expression</a><br />
-      <a href="#existence">The Existential Operator</a><br />
-      <a href="#inheritance">Inheritance, and Calling Super from a Subclass</a><br />
-      <a href="#pattern_matching">Pattern Matching</a><br />
-      <a href="#fat_arrow">Function Binding</a><br />
-      <a href="#embedded">Embedded JavaScript</a><br />
-      <a href="#switch">Switch/When/Else</a><br />
-      <a href="#try">Try/Catch/Finally</a><br />
-      <a href="#comparisons">Chained Comparisons</a><br />
-      <a href="#strings">Multiline Strings and Heredocs</a><br />
-      <a href="#resources">Resources</a><br />
-      <a href="#change_log">Change Log</a><br />
-    </p>
-
-    <h2 id="overview">Mini Overview</h2>
+    <h2>
+      <span id="overview" class="bookmark"></span>
+      Mini Overview
+    </h2>
 
     <p><i>CoffeeScript on the left, compiled JavaScript output on the right.</i></p>
 
@@ -104,22 +154,39 @@
       <a href="http://github.com/jashkenas/coffee-script/tree/master/examples/">examples</a> folder.
     </p>
 
-    <h2 id="installation">Installation and Usage</h2>
+    <h2>
+      <span id="installation" class="bookmark"></span>
+      Installation and Usage
+    </h2>
 
     <p>
-      The CoffeeScript compiler is written in pure Ruby, and is available
-      as a Ruby Gem.
+      The CoffeeScript compiler is written in pure CoffeeScript, using a
+      <a href="http://github.com/jashkenas/coffee-script/blob/master/src/grammar.coffee">small DSL</a>
+      on top of the <a href="http://github.com/zaach/jison">Jison parser generator</a>, and is available
+      as a <a href="http://nodejs.org/">Node.js</a> utility. The core compiler however,
+      does not depend on Node, and can be run in other server-side-JavaScript environments,
+      or in the browser (see "Try CoffeeScript", above). This may be helpful,
+      as Node only run on flavors of nix, and not Windows, for the time being.
+    </p>
+
+    <p>
+      To install, first make sure you have a working version of
+      <a href="http://nodejs.org/">Node.js</a> version 0.1.31 or higher.
+      Then clone the CoffeeScript
+      <a href="http://github.com/jashkenas/coffee-script">source repository</a>
+      from GitHub, or download the latest
+      release: <a href="http://github.com/jashkenas/coffee-script/tarball/0.5.5">0.5.5</a>.
+      To install the CoffeeScript compiler system-wide
+      under <tt>/usr/local</tt>, open the directory and run:
     </p>
 
     <pre>
-gem install coffee-script</pre>
+sudo bin/cake install</pre>
 
     <p>
-      Installing the gem provides the <tt>coffee</tt> command, which can
-      be used to compile CoffeeScript <tt>.coffee</tt> files into JavaScript, as
-      well as debug them. In conjunction with
-      <a href="http://nodejs.org/">Node.js</a> (or <a href="http://narwhaljs.org/">Narwhal</a>), the <tt>coffee</tt>
-      command also provides direct evaluation and an interactive REPL.
+      This provides the <tt>coffee</tt> command, which will execute CoffeeScripts
+      under Node.js by default, but is also used to compile CoffeeScript
+      <tt>.coffee</tt> files into JavaScript, or to run an an interactive REPL.
       When compiling to JavaScript, <tt>coffee</tt> writes the output
       as <tt>.js</tt> files in the same directory by default, but output
       can be customized with the following options:
@@ -127,25 +194,25 @@ gem install coffee-script</pre>
 
     <table>
       <tr>
-        <td width="25%"><code>-i, --interactive</code></td>
+        <td><code>-c, --compile</code></td>
         <td>
-          Launch an interactive CoffeeScript session.
-          Requires <a href="http://nodejs.org/">Node.js</a>,
-          or <a href="http://narwhaljs.org/">Narwhal</a>, with <tt>--narwhal</tt>.
+          Compile a <tt>.coffee</tt> script into a <tt>.js</tt> JavaScript file
+          of the same name.
         </td>
       </tr>
       <tr>
-        <td><code>-r, --run</code></td>
+        <td width="25%"><code>-i, --interactive</code></td>
         <td>
-          Compile and execute scripts without saving the intermediate
-          JavaScript. Requires <a href="http://nodejs.org/">Node.js</a>,
-          or <a href="http://narwhaljs.org/">Narwhal</a>, with <tt>--narwhal</tt>.
+          Launch an interactive CoffeeScript session to try short snippets.
+          More pleasant if wrapped with
+          <a href="http://utopia.knoware.nl/~hlub/uck/rlwrap/rlwrap.html">rlwrap</a>.
         </td>
       </tr>
       <tr>
         <td><code>-o, --output [DIR]</code></td>
         <td>
           Write out all compiled JavaScript files into the specified directory.
+          Use in conjunction with <tt>--compile</tt> or <tt>--watch</tt>.
         </td>
       </tr>
       <tr>
@@ -165,51 +232,55 @@ gem install coffee-script</pre>
       <tr>
         <td><code>-l, --lint</code></td>
         <td>
-          If the <tt>jsl</tt> (JavaScript Lint) command is installed, use it
+          If the <tt>jsl</tt>
+          (<a href="http://www.javascriptlint.com/">JavaScript Lint</a>)
+          command is installed, use it
           to check the compilation of a CoffeeScript file. (Handy in
           conjunction with <tt>--watch</tt>)
         </td>
       </tr>
+      <tr>
+        <td><code>-s, --stdio</code></td>
+        <td>
+          Pipe in CoffeeScript to STDIN and get back JavaScript over STDOUT.
+          Good for use with processes written in other languages. An example:<br />
+          <tt>cat src/cake.coffee | coffee -s</tt>
+        </td>
+      </tr>
       <tr>
         <td><code>-e, --eval</code></td>
         <td>
           Compile and print a little snippet of CoffeeScript directly from the
-          command line (or from <b>stdin</b>). For example:<br /><tt>coffee -e "square: (x) -> x * x"</tt>
+          command line. For example:<br /><tt>coffee -e "square: (x) -> x * x"</tt>
         </td>
       </tr>
       <tr>
-        <td><code>-t, --tokens</code></td>
-        <td>
-          Instead of parsing the CoffeeScript, just lex it, and print out the
-          token stream: <tt>[:IDENTIFIER, "square"], [":", ":"], [:PARAM, "x"]</tt> ...
-        </td>
-      </tr>
-      <tr>
-        <td><code>-v, --verbose</code></td>
-        <td>
-          As the JavaScript is being generated, print out every step of code
-          generation, including lexical scope and the nodes in the
-          AST.
-        </td>
-      </tr>
-      <tr>
-        <td><code>-n, --no-wrap</code></td>
+        <td><code>--no-wrap</code></td>
         <td>
           Compile the JavaScript without the top-level function safety wrapper.
           (Used for CoffeeScript as a Node.js module.)
         </td>
       </tr>
       <tr>
-        <td><code>-g, --globals</code></td>
+        <td><code>-t, --tokens</code></td>
         <td>
-          Suppress all variable declarations at the top-level, effectively adding
-          those variables to the global scope. (Used by the REPL.)
+          Instead of parsing the CoffeeScript, just lex it, and print out the
+          token stream: <tt>[IDENTIFIER square] [ASSIGN :] [PARAM_START (]</tt> ...
         </td>
       </tr>
       <tr>
-        <td><code>--install-bundle</code></td>
+        <td><code>-n, --nodes</code></td>
         <td>
-          Install the TextMate bundle for CoffeeScript syntax highlighting.
+          Instead of compiling the CoffeeScript, just lex and parse it, and print
+          out the parse tree:
+<pre class="no_bar">
+Expressions
+  Assign
+    Value "square"
+    Code "x"
+      Op *
+        Value "x"
+        Value "x"</pre>
         </td>
       </tr>
     </table>
@@ -219,12 +290,15 @@ gem install coffee-script</pre>
     </p>
 
     <pre>
-coffee path/to/script.coffee
+coffee -c path/to/script.coffee
 coffee --interactive
 coffee --watch --lint experimental.coffee
 coffee --print app/scripts/*.coffee > concatenation.js</pre>
 
-    <h2>Language Reference</h2>
+    <h2>
+      <span id="language" class="bookmark"></span>
+      Language Reference
+    </h2>
 
     <p>
       <i>
@@ -236,7 +310,14 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
       </i>
     </p>
 
-    <p id="whitespace">
+    <p>
+      <i>
+        Many of the examples can be run (where it makes sense) by pressing the "run"
+        button towards the bottom right. You can also paste examples into
+        "Try CoffeeScript" in the toolbar, and play with them from there.
+      </i>
+    <p>
+      <span id="whitespace" class="bookmark"></span>
       <b class="header">Significant Whitespace</b>
       CoffeeScript uses Python-style significant whitespace: You don't need to
       use semicolons <tt>;</tt> to terminate expressions, ending
@@ -249,40 +330,46 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
 
     <p>
-      You don't need to use parentheses to invoke a function, if you're passing
+      You don't need to use parentheses to invoke a function if you're passing
       arguments:<br /><tt>print "coffee"</tt>
     </p>
 
     <p>
       You can use newlines to break up your expression into smaller pieces,
-      as long as CoffeeScript can determine that the line hasn't finished yet.
+      as long as CoffeeScript can determine that the line hasn't finished yet,
+      because it ends with an operator or a dot.
     </p>
 
-    <p id="functions">
+    <p>
+      <span id="functions" class="bookmark"></span>
       <b class="header">Functions and Invocation</b>
       Functions are defined by a list of parameters, an arrow, and the
-      function body. The empty function looks like this: <tt>-></tt>. All
+      function body. The empty function looks like this: <tt>-></tt> All
       functions in CoffeeScript are named by default, for easier debugging.
     </p>
     <%= code_for('functions', 'cube(5)') %>
     <p>
-      If you'd like to create an anonymous function, just wrap it in parentheses:
+      If you'd like to assign a function literal to a variable, but not have
+      it be named, just wrap the function definition in parentheses:
       <tt>((x) -> x * x)</tt>
     </p>
 
-    <p id="assignment">
+    <p>
+      <span id="assignment" class="bookmark"></span>
       <b class="header">Assignment</b>
       Use a colon <tt>:</tt> to assign, as in
       <a href="http://json.org">JSON</a>. Equal signs are only needed for
-      mathy things.
+      mathy things. While colons are preferred, the two may be used interchangeably,
+      even within object literals.
     </p>
     <%= code_for('assignment', 'greeting') %>
     <p>
-      Declaration of new variables are pushed up to the top of the nearest
+      All declaration of new variables is pushed up to the top of the nearest
       lexical scope, so that assignment may always be performed within expressions.
     </p>
 
-    <p id="objects_and_arrays">
+    <p>
+      <span id="objects_and_arrays" class="bookmark"></span>
       <b class="header">Objects and Arrays</b>
       Object and Array literals look very similar to their JavaScript cousins.
       When you spread out each assignment on a separate line, the commas are
@@ -292,7 +379,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('objects_and_arrays', 'song.join(",")') %>
 
-    <p id="lexical_scope">
+    <p>
+      <span id="lexical_scope" class="bookmark"></span>
       <b class="header">Lexical Scoping and Variable Safety</b>
       The CoffeeScript compiler takes care to make sure that all of your variables
       are properly declared within lexical scope &mdash; you never need to write
@@ -322,7 +410,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
       CommonJS and the browser: <tt>root: exports ? this</tt>
     </p>
 
-    <p id="conditionals">
+    <p>
+      <span id="conditionals" class="bookmark"></span>
       <b class="header">Conditionals, Ternaries, and Conditional Assignment</b>
       <b>If/else</b> statements can be written without the use of parentheses and
       curly brackets. As with functions and other block expressions,
@@ -341,7 +430,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
       truthy variables.
     </p>
 
-    <p id="aliases">
+    <p>
+      <span id="aliases" class="bookmark"></span>
       <b class="header">Aliases</b>
       Because the <tt>==</tt> operator frequently causes undesirable coercion,
       is intransitive, and has a different meaning than in other languages,
@@ -374,7 +464,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('aliases') %>
 
-    <p id="splats">
+    <p>
+      <span id="splats" class="bookmark"></span>
       <b class="header">Splats...</b>
       The JavaScript <b>arguments object</b> is a useful way to work with
       functions that accept variable numbers of arguments. CoffeeScript provides
@@ -383,7 +474,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('splats', true) %>
 
-    <p id="arguments">
+    <p>
+      <span id="arguments" class="bookmark"></span>
       <b class="header">Arguments are Arrays</b>
       If you reference the <b>arguments object</b> directly, it will be converted
       into a real Array, making all of the
@@ -392,7 +484,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('arguments', true) %>
 
-    <p id="while">
+    <p>
+      <span id="while" class="bookmark"></span>
       <b class="header">While Loops</b>
       The only low-level loop that CoffeeScript provides is the <b>while</b> loop. The
       main difference from JavaScript is that the <b>while</b> loop can be used
@@ -407,7 +500,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
       <b>each</b> (<b>forEach</b>) style iterators, or...
     </p>
 
-    <p id="comprehensions">
+    <p>
+      <span id="comprehensions" class="bookmark"></span>
       <b class="header">Comprehensions (Arrays, Objects, and Ranges)</b>
       For your looping needs, CoffeeScript provides array comprehensions
       similar to Python's. They replace (and compile into) <b>for</b> loops, with
@@ -431,7 +525,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('object_comprehensions', 'ages.join(", ")') %>
 
-    <p id="slice_splice">
+    <p>
+      <span id="slice_splice" class="bookmark"></span>
       <b class="header">Array Slicing and Splicing with Ranges</b>
       CoffeeScript borrows Ruby's
       <a href="http://ruby-doc.org/core/classes/Range.html">range syntax</a>
@@ -447,7 +542,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('splices', 'numbers') %>
 
-    <p id="expressions">
+    <p>
+      <span id="expressions" class="bookmark"></span>
       <b class="header">Everything is an Expression (at least, as much as possible)</b>
       You might have noticed how even though we don't add return statements
       to CoffeeScript functions, they nonetheless return their final value.
@@ -485,8 +581,9 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
       and <tt>return</tt>. If you make use of them within a block of code,
       CoffeeScript won't try to perform the conversion.
     </p>
-    
-    <p id="existence">
+
+    <p>
+      <span id="existence" class="bookmark"></span>
       <b class="header">The Existential Operator</b>
       It's a little difficult to check for the existence of a variable in
       JavaScript. <tt>if (variable) ...</tt> comes close, but fails for zero,
@@ -509,14 +606,15 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('soaks') %>
     <p>
-      Soaking up nulls is similar to Ruby's 
-      <a href="http://andand.rubyforge.org/">andand gem</a>, and to the 
+      Soaking up nulls is similar to Ruby's
+      <a href="http://andand.rubyforge.org/">andand gem</a>, and to the
       <a href="http://groovy.codehaus.org/Operators#Operators-SafeNavigationOperator%28%3F.%29">safe navigation operator</a>
       in Groovy.
     </p>
 
-    <p id="inheritance">
-      <b class="header">Inheritance, and Calling Super from a Subclass</b>
+    <p>
+      <span id="classes" class="bookmark"></span>
+      <b class="header">Classes, Inheritance, and Super</b>
       JavaScript's prototypal inheritance has always been a bit of a
       brain-bender, with a whole family tree of libraries that provide a cleaner
       syntax for classical inheritance on top of JavaScript's prototypes:
@@ -530,14 +628,23 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
       set the prototype chain.
     </p>
     <p>
-      CoffeeScript provides <tt>extends</tt>
-      to help with prototype setup, <tt>::</tt> for quick access to an
-      object's prototype, and converts <tt>super()</tt> into a call against
-      the immediate ancestor's method of the same name.
+      Instead of repetitively attaching functions to a prototype, CoffeeScript
+      provides a basic <tt>class</tt> structure that allows you to name your class,
+      set the superclass, assign prototypal properties, and define the constructor,
+      in a single assignable expression.
     </p>
-    <%= code_for('super', true) %>
+    <%= code_for('classes', true) %>
+    <p>
+      If structuring your prototypes classically isn't your cup of tea, CoffeeScript
+      provides a couple of lower-level conveniences. The <tt>extends</tt> operator
+      helps with proper prototype setup, as seen above, <tt>::</tt> gives you
+      quick access to an object's prototype, and <tt>super()</tt>
+      is converted into a call against the immediate ancestor's method of the same name.
+    </p>
+    <%= code_for('prototypes', '"one_two".dasherize()') %>
 
-    <p id="pattern_matching">
+    <p>
+      <span id="pattern_matching" class="bookmark"></span>
       <b class="header">Pattern Matching (Destructuring Assignment)</b>
       To make extracting values from complex arrays and objects more convenient,
       CoffeeScript implements ECMAScript Harmony's proposed
@@ -559,8 +666,17 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('object_extraction', 'poet + " — " + street') %>
 
-    <p id="fat_arrow">
+    <p>
+      <span id="fat_arrow" class="bookmark"></span>
       <b class="header">Function binding</b>
+      In JavaScript, the <tt>this</tt> keyword is dynamically scoped to mean the
+      object that the current function is attached to. If you pass a function as
+      as callback, or attach it to a different object, the original value of <tt>this</tt>
+      will be lost. If you're not familiar with this behavior,
+      <a href="http://www.digital-web.com/articles/scope_in_javascript/">this Digital Web article</a>
+      gives a good overview of the quirks.
+    </p>
+    <p>
       The fat arrow <tt>=></tt> can be used to both define a function, and to bind
       it to the current value of <tt>this</tt>, right on the spot. This is helpful
       when using callback-based libraries like Prototype or jQuery, for creating
@@ -569,8 +685,14 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
       properties of the <tt>this</tt> where they're defined.
     </p>
     <%= code_for('fat_arrow') %>
+    <p>
+      If we had used <tt>-></tt> in the callback above, <tt>@customer</tt> would
+      have referred to the undefined "customer" property of the DOM element,
+      and trying to call <tt>purchase()</tt> on it would have raised an exception.
+    </p>
 
-    <p id="embedded">
+    <p>
+      <span id="embedded" class="bookmark"></span>
       <b class="header">Embedded JavaScript</b>
       Hopefully, you'll never need to use it, but if you ever need to intersperse
       snippets of JavaScript within your CoffeeScript, you can
@@ -578,7 +700,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('embedded', 'hi()') %>
 
-    <p id="switch">
+    <p>
+      <span id="switch" class="bookmark"></span>
       <b class="header">Switch/When/Else</b>
       <b>Switch</b> statements in JavaScript are rather broken. You can only
       do comparisons based on string equality, and need to remember to <b>break</b> at the end of
@@ -595,14 +718,16 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('switch') %>
 
-    <p id="try">
+    <p>
+      <span id="try" class="bookmark"></span>
       <b class="header">Try/Catch/Finally</b>
       Try/catch statements are just about the same as JavaScript (although
       they work as expressions).
     </p>
     <%= code_for('try') %>
 
-    <p id="comparisons">
+    <p>
+      <span id="comparisons" class="bookmark"></span>
       <b class="header">Chained Comparisons</b>
       CoffeeScript borrows
       <a href="http://docs.python.org/reference/expressions.html#notin">chained comparisons</a>
@@ -611,7 +736,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('comparisons', 'healthy') %>
 
-    <p id="strings">
+    <p>
+      <span id="strings" class="bookmark"></span>
       <b class="header">Multiline Strings and Heredocs</b>
       Multiline strings are allowed in CoffeeScript.
     </p>
@@ -624,51 +750,164 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
     </p>
     <%= code_for('heredocs') %>
 
-    <h2 id="resources">Resources</h2>
+    <p>
+      <span id="interpolation" class="bookmark"></span>
+      <b class="header">String Interpolation</b>
+      A version of <a href="http://wiki.ecmascript.org/doku.php?id=strawman:string_interpolation">ECMAScript Harmony's proposed string interpolation</a>
+      is included in CoffeeScript. Simple variables can be included by marking
+      them with a dollar sign.
+    </p>
+    <%= code_for('interpolation', 'quote') %>
+    <p>
+      And arbitrary expressions can be interpolated by using brackets <tt>${ ... }</tt>
+    </p>
+    <%= code_for('interpolation_expression', 'sentence') %>
+
+    <h2>
+      <span id="cake" class="bookmark"></span>
+      Cake, and Cakefiles
+    </h2>
+
+    <p>
+      CoffeeScript includes a simple build system similar to Make and Rake. Naturally,
+      it's called Cake, and is used for the build and test tasks for the CoffeeScript
+      language itself. Tasks are defined in a file named <tt>Cakefile</tt>, and
+      can be invoked by running <tt>cake taskname</tt> from within the directory.
+      To print a list of all the tasks, just run <tt>cake</tt>.
+    </p>
+
+    <p>
+      Task definitions are written in CoffeeScript, so you can put arbitrary code
+      in your Cakefile. Define a task with a name, a long description, and the
+      function to invoke when the task is run. Here's a hypothetical task
+      that uses the Node.js API.
+    </p>
+    <%= code_for('cake_tasks') %>
+
+    <h2>
+      <span id="scripts" class="bookmark"></span>
+      "text/coffeescript" Script Tags
+    </h2>
+
+    <p>
+      While it's not recommended for serious use, CoffeeScripts may be included
+      directly within the browser using <tt>&lt;script type="text/coffeescript"&gt;</tt>
+      tags. The source includes a compressed and minified version of the compiler
+      (<a href="extras/coffee-script.js">Download current version here, 43k when gzipped</a>)
+      as <tt>extras/coffee-script.js</tt>. Include this file on a page with
+      inline CoffeeScript tags, and it will compile and evaluate them in order.
+    </p>
+
+    <p>
+      In fact, the little bit of glue script that runs "Try CoffeeScript" above,
+      as well as jQuery for the menu, is implemented in just this way.
+      View source and look at the bottom of the page to see the example.
+      Including the script also gives you access to <tt>CoffeeScript.compile()</tt>
+      so you can pop open Firebug and try compiling some strings.
+    </p>
+
+    <p>
+      The usual caveats about CoffeeScript apply &mdash; your inline scripts will
+      run within a closure wrapper, so if you want to expose global variables or
+      functions, attach them to the <tt>window</tt> object.
+    </p>
+
+    <h2>
+      <span id="resources" class="bookmark"></span>
+      Resources
+    </h2>
 
     <ul>
       <li>
         <a href="http://github.com/jashkenas/coffee-script/">Source Code</a><br />
-        Use <tt>bin/coffee</tt> to test your changes,
-        <tt>rake test</tt> to run the test suite,
-        <tt>rake build:parser</tt> to regenerate the Racc parser if you're
-        working on the grammar,
-        and <tt>rake gem:install</tt> to
-        create and install a custom version of the gem.
+        Use <tt>bin/coffee</tt> to test your changes,<br />
+        <tt>bin/cake test</tt> to run the test suite,<br />
+        <tt>bin/cake build</tt> to rebuild the CoffeeScript compiler, and <br />
+        <tt>bin/cake build:parser</tt> to regenerate the Jison parser if you're
+        working on the grammar. <br /><br />
+        <tt>bin/cake build:full</tt> is a good command to run when you're working
+        on the core language. It'll refresh the lib directory
+        (in case you broke something), build your altered compiler, use that to
+        rebuild itself (a good sanity test) and then run all of the tests. If
+        they pass, there's a good chance you've made a successful change.
       </li>
       <li>
         <a href="http://github.com/jashkenas/coffee-script/issues">CoffeeScript Issues</a><br />
         Bugs reports, feature requests, and general discussion all belong here.
       </li>
       <li>
-        <a href="http://github.com/mattly/rack-coffee">rack-coffee</a><br />
-        Rack middleware for serving CoffeeScripts as JavaScript directly to
-        the browser, without having to compile them first. From
-        <a href="http://github.com/mattly">Matt Lyon</a>.
+        If you'd like to chat, stop by <tt>#coffeescript</tt> on Freenode in the
+        IRC client of your choice, or on
+        <a href="http://webchat.freenode.net/">webchat.freenode.net</a>.
       </li>
       <li>
-        <a href="http://github.com/jnicklas/bistro_car">BistroCar</a><br />
-        A Rails plugin by
-        <a href="http://github.com/jnicklas">Jonas Nicklas</a>
-        that includes CoffeeScript helpers,
-        bundling and minification.
+        <b>defunkt</b>'s <a href="http://github.com/defunkt/coffee-mode">CoffeeScript Major Mode</a>
+        &mdash; a Emacs major mode that provides syntax highlighting, indentation
+        support, and some bonus commands. (For Vim and TextMate highlighters,
+        see the <tt>extras</tt> directory of the main repository.)
       </li>
       <li>
-        <a href="http://github.com/inem/coffee-haml-filter">coffee-haml-filter</a><br />
-        A custom <a href="http://haml-lang.com/">HAML</a> filter, by
-        <a href="http://github.com/inem">Ivan Nemytchenko</a>, that embeds
-        snippets of CoffeeScript within your HAML templates.
-      </li>
-      <li>
-        <a href="http://github.com/creationix/coffeepot">CoffeePot</a><br />
-        An implementation of CoffeeScript, written in CoffeeScript, by
-        <a href="http://github.com/creationix">Tim Caswell</a>. Compiles just
-        a limited subset at this point.
+        <b>mattly</b>'s <a href="http://github.com/mattly/rack-coffee">rack-coffee</a>
+        &mdash; a small Rack middleware for serving CoffeeScript files as
+        compiled JavaScript on the fly.
       </li>
     </ul>
 
-    <h2 id="change_log">Change Log</h2>
-    
+    <h2>
+      <span id="change_log" class="bookmark"></span>
+      Change Log
+    </h2>
+
+    <p>
+      <b class="header" style="margin-top: 20px;">0.5.5</b>
+      String interpolation, contributed by
+      <a href="http://github.com/StanAngeloff">Stan Angeloff</a>.
+      Since <tt>--run</tt> has been the default since <b>0.5.3</b>, updating
+      <tt>--stdio</tt> and <tt>--eval</tt> to run by default, pass <tt>--compile</tt>
+      as well if you'd like to print the result.
+    </p>
+
+    <p>
+      <b class="header" style="margin-top: 20px;">0.5.4</b>
+      Bugfix that corrects the Node.js global constants <tt>__filename</tt> and
+      <tt>__dirname</tt>. Tweaks for more flexible parsing of nested function
+      literals and improperly-indented comments. Updates for the latest Node.js API.
+    </p>
+
+    <p>
+      <b class="header" style="margin-top: 20px;">0.5.3</b>
+      CoffeeScript now has a syntax for defining classes. Many of the core
+      components (Nodes, Lexer, Rewriter, Scope, Optparse) are using them.
+      Cakefiles can use <tt>optparse.coffee</tt> to define options for tasks.
+      <tt>--run</tt> is now the default flag for the <tt>coffee</tt> command,
+      use <tt>--compile</tt> to save JavaScripts. Bugfix for an ambiguity between
+      RegExp literals and chained divisions.
+    </p>
+
+    <p>
+      <b class="header" style="margin-top: 20px;">0.5.2</b>
+      Added a compressed version of the compiler for inclusion in web pages as
+      <br  /><tt>extras/coffee-script.js</tt>. It'll automatically run any script tags
+      with type <tt>text/coffeescript</tt> for you. Added a <tt>--stdio</tt> option
+      to the <tt>coffee</tt> command, for piped-in compiles.
+    </p>
+
+
+    <p>
+      <b class="header" style="margin-top: 20px;">0.5.1</b>
+      Improvements to null soaking with the existential operator, including
+      soaks on indexed properties. Added conditions to <tt>while</tt> loops,
+      so you can use them as filters with <tt>when</tt>, in the same manner as
+      comprehensions.
+    </p>
+
+    <p>
+      <b class="header" style="margin-top: 20px;">0.5.0</b>
+      CoffeeScript 0.5.0 is a major release, While there are no language changes,
+      the Ruby compiler has been removed in favor of a self-hosting
+      compiler written in pure CoffeeScript.
+    </p>
+
     <p>
       <b class="header" style="margin-top: 20px;">0.3.2</b>
       <tt>@property</tt> is now a shorthand for <tt>this.property</tt>.<br />
@@ -824,5 +1063,60 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
 
   </div>
 
+  <script type="text/coffeescript">
+
+    # Set up the compilation function, to run when you stop typing.
+    compile_source: ->
+      source: $('#repl_source').val()
+      window.compiled_js: ''
+      try
+        window.compiled_js: CoffeeScript.compile source, {no_wrap: true}
+        $('#repl_results').text window.compiled_js
+        $('#error').hide();
+      catch error
+        $('#error').text(error.message).show();
+
+    # Listen for keypresses and recompile.
+    $('#repl_source').keyup -> compile_source()
+
+    # Eval the compiled js.
+    $('button.run').click ->
+      try
+        eval window.compiled_js
+      catch error then alert error
+
+    current_nav: null
+
+    # Helper to hide the menus.
+    close_menus: ->
+      if current_nav
+        current_nav.removeClass 'active'
+        document.body.className: 'minimized'
+      current_nav: null
+
+    # Bind navigation buttons to open the menus.
+    $('.navigation').click (e) ->
+      return if e.target.tagName.toLowerCase() is 'a'
+      if this isnt (current_nav and current_nav[0])
+        close_menus();
+        current_nav: $(this)
+        current_nav.addClass 'active'
+      false
+
+    $(document.body).click -> close_menus()
+
+    $('.navigation .full_screen').click ->
+      document.body.className: 'full_screen'
+
+    $('.navigation .minimize').click ->
+      document.body.className: 'minimized'
+
+    compile_source()
+
+  </script>
+
+  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
+  <script src="extras/coffee-script.js"></script>
+
 </body>
 </html>

documentation/js/aliases.js

@@ -11,4 +11,4 @@
   }
   car.speed < speed_limit ? accelerate() : null;
   print("My name is " + this.name);
-})();
+})();

documentation/js/arguments.js

@@ -1,8 +1,8 @@
 (function(){
   var backwards;
   backwards = function backwards() {
-    var arguments = Array.prototype.slice.call(arguments, 0);
+    arguments = Array.prototype.slice.call(arguments, 0);
     return alert(arguments.reverse());
   };
   backwards("stairway", "to", "heaven");
-})();
+})();

documentation/js/array_comprehensions.js

@@ -1,21 +1,21 @@
 (function(){
-  var __a, __b, __c, __d, __e, __f, __g, food, lunch, roid, roid2;
+  var _a, _b, _c, _d, _e, _f, _g, _h, _i, _j, food, lunch, roid, roid2;
   // Eat lunch.
   lunch = (function() {
-    __a = []; __b = ['toast', 'cheese', 'wine'];
-    for (__c = 0; __c < __b.length; __c++) {
-      food = __b[__c];
-      __a.push(eat(food));
+    _a = []; _b = ['toast', 'cheese', 'wine'];
+    for (_c = 0, _d = _b.length; _c < _d; _c++) {
+      food = _b[_c];
+      _a.push(eat(food));
     }
-    return __a;
+    return _a;
   }).call(this);
   // Naive collision detection.
-  __d = asteroids;
-  for (__e = 0; __e < __d.length; __e++) {
-    roid = __d[__e];
-    __f = asteroids;
-    for (__g = 0; __g < __f.length; __g++) {
-      roid2 = __f[__g];
+  _e = asteroids;
+  for (_f = 0, _g = _e.length; _f < _g; _f++) {
+    roid = _e[_f];
+    _h = asteroids;
+    for (_i = 0, _j = _h.length; _i < _j; _i++) {
+      roid2 = _h[_i];
       if (roid !== roid2) {
         if (roid.overlaps(roid2)) {
           roid.explode();
@@ -23,4 +23,4 @@
       }
     }
   }
-})();
+})();

documentation/js/assignment.js

@@ -2,4 +2,4 @@
   var difficulty, greeting;
   greeting = "Hello CoffeeScript";
   difficulty = 0.5;
-})();
+})();

documentation/js/cake_tasks.js

@@ -0,0 +1,14 @@
+(function(){
+  process.mixin(require('assert'));
+  task('test', 'run each of the unit tests', function() {
+    var _a, _b, _c, _d, test;
+    _a = []; _b = test_files;
+    for (_c = 0, _d = _b.length; _c < _d; _c++) {
+      test = _b[_c];
+      _a.push(fs.readFile(test, function(err, code) {
+        return eval(coffee.compile(code));
+      }));
+    }
+    return _a;
+  });
+})();

documentation/js/classes.js

@@ -1,33 +1,30 @@
 (function(){
-  var Animal, Horse, Snake, __a, __b, sam, tom;
+  var Animal, Horse, Snake, sam, tom;
+  var __extends = function(child, parent) {
+    var ctor = function(){ };
+    ctor.prototype = parent.prototype;
+    child.__superClass__ = parent.prototype;
+    child.prototype = new ctor();
+    child.prototype.constructor = child;
+  };
   Animal = function Animal() {  };
   Animal.prototype.move = function move(meters) {
     return alert(this.name + " moved " + meters + "m.");
   };
   Snake = function Snake(name) {
-    var __a;
-    __a = this.name = name;
-    return Snake === this.constructor ? this : __a;
+    this.name = name;
+    return this;
   };
-  __a = function(){};
-  __a.prototype = Animal.prototype;
-  Snake.__superClass__ = Animal.prototype;
-  Snake.prototype = new __a();
-  Snake.prototype.constructor = Snake;
+  __extends(Snake, Animal);
   Snake.prototype.move = function move() {
     alert("Slithering...");
     return Snake.__superClass__.move.call(this, 5);
   };
   Horse = function Horse(name) {
-    var __b;
-    __b = this.name = name;
-    return Horse === this.constructor ? this : __b;
+    this.name = name;
+    return this;
   };
-  __b = function(){};
-  __b.prototype = Animal.prototype;
-  Horse.__superClass__ = Animal.prototype;
-  Horse.prototype = new __b();
-  Horse.prototype.constructor = Horse;
+  __extends(Horse, Animal);
   Horse.prototype.move = function move() {
     alert("Galloping...");
     return Horse.__superClass__.move.call(this, 45);
@@ -36,4 +33,4 @@
   tom = new Horse("Tommy the Palomino");
   sam.move();
   tom.move();
-})();
+})();

documentation/js/comparisons.js

@@ -2,4 +2,4 @@
   var cholesterol, healthy;
   cholesterol = 127;
   healthy = (200 > cholesterol) && (cholesterol > 60);
-})();
+})();

documentation/js/conditionals.js

@@ -9,4 +9,4 @@
   }
   date = friday ? sue : jill;
   expensive = expensive || do_the_math();
-})();
+})();

documentation/js/embedded.js

@@ -3,4 +3,4 @@
   hi = function() {
   return [document.title, "Hello JavaScript"].join(": ");
 };
-})();
+})();

documentation/js/existence.js

@@ -1,7 +1,7 @@
 (function(){
   var solipsism, speed;
-  if ((typeof mind !== "undefined" && mind !== null) && (typeof !world !== "undefined" && !world !== null)) {
+  if ((typeof mind !== "undefined" && mind !== null) && !(typeof world !== "undefined" && world !== null)) {
     solipsism = true;
   }
   speed = (typeof speed !== "undefined" && speed !== null) ? speed : 140;
-})();
+})();

documentation/js/expressions.js

@@ -10,4 +10,4 @@
     }
   };
   eldest = 24 > 21 ? "Liz" : "Ike";
-})();
+})();

documentation/js/expressions_assignment.js

@@ -1,4 +1,4 @@
 (function(){
   var one, six, three, two;
   six = ((one = 1)) + ((two = 2)) + ((three = 3));
-})();
+})();

documentation/js/expressions_comprehension.js

@@ -1,14 +1,12 @@
 (function(){
-  var __a, __b, globals, name;
+  var _a, _b, globals, name;
   var __hasProp = Object.prototype.hasOwnProperty;
   // The first ten global properties.
-  globals = ((function() {
-    __a = []; __b = window;
-    for (name in __b) {
-      if (__hasProp.call(__b, name)) {
-        __a.push(name);
-      }
-    }
-    return __a;
-  }).call(this)).slice(0, 10);
-})();
+  globals = (function() {
+    _a = []; _b = window;
+    for (name in _b) { if (__hasProp.call(_b, name)) {
+      _a.push(name);
+    }}
+    return _a;
+  }).call(this).slice(0, 10);
+})();

documentation/js/expressions_try.js

@@ -6,4 +6,4 @@
       return "And the error is ... " + error;
     }
   }).call(this));
-})();
+})();

documentation/js/fat_arrow.js

@@ -1,10 +1,9 @@
 (function(){
   var Account;
   Account = function Account(customer, cart) {
-    var __a;
     this.customer = customer;
     this.cart = cart;
-    __a = $('.shopping_cart').bind('click', (function(__this) {
+    return $('.shopping_cart').bind('click', (function(__this) {
       var __func = function(event) {
         return this.customer.purchase(this.cart);
       };
@@ -12,6 +11,5 @@
         return __func.apply(__this, arguments);
       });
     })(this));
-    return Account === this.constructor ? this : __a;
   };
-})();
+})();

documentation/js/functions.js

@@ -6,4 +6,4 @@
   cube = function cube(x) {
     return square(x) * x;
   };
-})();
+})();

documentation/js/heredocs.js

@@ -1,4 +1,4 @@
 (function(){
   var html;
   html = "<strong>\n  cup of coffeescript\n</strong>";
-})();
+})();

documentation/js/interpolation.js

@@ -0,0 +1,5 @@
+(function(){
+  var author, quote;
+  author = "Wittgenstein";
+  quote = "A picture is a fact. -- " + author;
+})();

documentation/js/interpolation_expression.js

@@ -0,0 +1,4 @@
+(function(){
+  var sentence;
+  sentence = (22 / 7) + " is a decent approximation of π";
+})();

documentation/js/multiple_return_values.js

@@ -1,11 +1,11 @@
 (function(){
-  var __a, city, forecast, temp, weather_report;
+  var _a, city, forecast, temp, weather_report;
   weather_report = function weather_report(location) {
     // Make an Ajax request to fetch the weather...
     return [location, 72, "Mostly Sunny"];
   };
-  __a = weather_report("Berkeley, CA");
-  city = __a[0];
-  temp = __a[1];
-  forecast = __a[2];
-})();
+  _a = weather_report("Berkeley, CA");
+  city = _a[0];
+  temp = _a[1];
+  forecast = _a[2];
+})();

documentation/js/object_comprehensions.js

@@ -1,5 +1,5 @@
 (function(){
-  var __a, __b, age, ages, child, years_old;
+  var _a, _b, age, ages, child, years_old;
   var __hasProp = Object.prototype.hasOwnProperty;
   years_old = {
     max: 10,
@@ -7,13 +7,11 @@
     tim: 11
   };
   ages = (function() {
-    __a = []; __b = years_old;
-    for (child in __b) {
-      age = __b[child];
-      if (__hasProp.call(__b, child)) {
-        __a.push(child + " is " + age);
-      }
-    }
-    return __a;
+    _a = []; _b = years_old;
+    for (child in _b) { if (__hasProp.call(_b, child)) {
+      age = _b[child];
+      _a.push(child + " is " + age);
+    }}
+    return _a;
   }).call(this);
-})();
+})();

documentation/js/object_extraction.js

@@ -1,5 +1,5 @@
 (function(){
-  var __a, __b, __c, city, futurists, poet, street;
+  var _a, _b, _c, city, futurists, poet, street;
   futurists = {
     sculptor: "Umberto Boccioni",
     painter: "Vladimir Burliuk",
@@ -8,10 +8,10 @@
       address: ["Via Roma 42R", "Bellagio, Italy 22021"]
     }
   };
-  __a = futurists;
-  __b = __a.poet;
-  poet = __b.name;
-  __c = __b.address;
-  street = __c[0];
-  city = __c[1];
-})();
+  _a = futurists;
+  _b = _a.poet;
+  poet = _b.name;
+  _c = _b.address;
+  street = _c[0];
+  city = _c[1];
+})();

documentation/js/objects_and_arrays.js

@@ -7,4 +7,4 @@
     tim: 11
   };
   matrix = [1, 0, 1, 0, 0, 1, 1, 1, 0];
-})();
+})();

documentation/js/overview.js

@@ -1,5 +1,5 @@
 (function(){
-  var __a, __b, __c, cubed_list, list, math, num, number, opposite_day, race, square;
+  var _a, _b, _c, _d, cubed_list, list, math, num, number, opposite_day, race, square;
   // Assignment:
   number = 42;
   opposite_day = true;
@@ -33,11 +33,11 @@
   }
   // Array comprehensions:
   cubed_list = (function() {
-    __a = []; __b = list;
-    for (__c = 0; __c < __b.length; __c++) {
-      num = __b[__c];
-      __a.push(math.cube(num));
+    _a = []; _b = list;
+    for (_c = 0, _d = _b.length; _c < _d; _c++) {
+      num = _b[_c];
+      _a.push(math.cube(num));
     }
-    return __a;
+    return _a;
   }).call(this);
-})();
+})();

documentation/js/parallel_assignment.js

@@ -1,8 +1,8 @@
 (function(){
-  var __a, and_switch, bait;
+  var _a, and_switch, bait;
   bait = 1000;
   and_switch = 0;
-  __a = [and_switch, bait];
-  bait = __a[0];
-  and_switch = __a[1];
-})();
+  _a = [and_switch, bait];
+  bait = _a[0];
+  and_switch = _a[1];
+})();

documentation/js/prototypes.js

@@ -0,0 +1,5 @@
+(function(){
+  String.prototype.dasherize = function dasherize() {
+    return this.replace(/_/g, "-");
+  };
+})();

documentation/js/range_comprehensions.js

@@ -1,21 +1,21 @@
 (function(){
-  var __a, __b, __c, __d, __e, countdown, egg_delivery, num;
+  var _a, _b, _c, _d, _e, countdown, egg_delivery, num;
   countdown = (function() {
-    __a = []; __d = 10; __e = 1;
-    for (__c=0, num=__d; (__d <= __e ? num <= __e : num >= __e); (__d <= __e ? num += 1 : num -= 1), __c++) {
-      __a.push(num);
+    _a = []; _d = 10; _e = 1;
+    for (_c = 0, num = _d; (_d <= _e ? num <= _e : num >= _e); (_d <= _e ? num += 1 : num -= 1), _c++) {
+      _a.push(num);
     }
-    return __a;
+    return _a;
   }).call(this);
   egg_delivery = function egg_delivery() {
-    var __f, __g, __h, __i, __j, dozen_eggs, i;
-    __f = []; __i = 0; __j = eggs.length;
-    for (__h=0, i=__i; (__i <= __j ? i < __j : i > __j); (__i <= __j ? i += 12 : i -= 12), __h++) {
-      __f.push((function() {
+    var _f, _g, _h, _i, _j, dozen_eggs, i;
+    _f = []; _i = 0; _j = eggs.length;
+    for (_h = 0, i = _i; (_i <= _j ? i < _j : i > _j); (_i <= _j ? i += 12 : i -= 12), _h++) {
+      _f.push((function() {
         dozen_eggs = eggs.slice(i, i + 12);
         return deliver(new egg_carton(dozen));
       }).call(this));
     }
-    return __f;
+    return _f;
   };
-})();
+})();

documentation/js/scope.js

@@ -7,4 +7,4 @@
     return num = 10;
   };
   new_num = change_numbers();
-})();
+})();

documentation/js/slices.js

@@ -3,4 +3,4 @@
   numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
   three_to_six = numbers.slice(3, 6 + 1);
   numbers_copy = numbers.slice(0, numbers.length);
-})();
+})();

documentation/js/soaks.js

@@ -1,4 +1,4 @@
 (function(){
-  var __a;
-  ((__a = lottery.draw_winner()) == undefined ? undefined : __a.address == undefined ? undefined : __a.address.zipcode);
-})();
+  var _a;
+  (_a = lottery.draw_winner()) == undefined ? undefined : _a.address == undefined ? undefined : _a.address.zipcode;
+})();

documentation/js/splats.js

@@ -13,4 +13,4 @@
   alert("Gold: " + gold);
   alert("Silver: " + silver);
   alert("The Field: " + the_field);
-})();
+})();

documentation/js/splices.js

@@ -2,4 +2,4 @@
   var numbers;
   numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
   numbers.splice.apply(numbers, [3, 6 - 3 + 1].concat([-3, -4, -5, -6]));
-})();
+})();

documentation/js/strings.js

@@ -6,4 +6,4 @@ or no money in my purse, and nothing particular \
 to interest me on shore, I thought I would sail \
 about a little and see the watery part of the \
 world...";
-})();
+})();

documentation/js/switch.js

@@ -15,4 +15,4 @@
   } else {
     go_to_work();
   }
-})();
+})();

documentation/js/try.js

@@ -7,4 +7,4 @@
   } finally {
     clean_up();
   }
-})();
+})();

documentation/js/while.js

@@ -1,5 +1,5 @@
 (function(){
-  var __a, lyrics, num;
+  var _a, lyrics, num;
   // Econ 101
   if (this.studying_economics) {
     while (supply > demand) {
@@ -12,11 +12,11 @@
   // Nursery Rhyme
   num = 6;
   lyrics = (function() {
-    __a = [];
+    _a = [];
     while (num -= 1) {
-      __a.push(num + " little monkeys, jumping on the bed. \
+      _a.push(num + " little monkeys, jumping on the bed. \
 One fell out and bumped his head.");
     }
-    return __a;
+    return _a;
   }).call(this);
-})();
+})();

documentation/speed.html

@@ -1,53 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-  <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
-  <title>Quickie CoffeeScript Speed Tests</title>
-  <script type="text/javascript" src="http://www.broofa.com/Tools/JSLitmus/JSLitmus.js"></script>
-</head>
-<body>
-
-  <h1>Quickie CoffeeScript Speed Tests</h1>
-
-  <script type="text/javascript">
-    var num = 1000;
-    var arr = [];
-    while (num--) arr.push(num);
-
-    var f1 = function f1() {
-      return arr;
-    };
-
-    JSLitmus.test('regular function', function() {
-      f1();
-    });
-
-    var __this = this;
-
-    var f2 = function f2() {
-      return (function() {
-        return arr;
-      }).apply(__this, arguments);
-    };
-
-    JSLitmus.test('bound function', function() {
-      f2();
-    });
-
-    var f3 = (function() {
-      __b = function() {
-        return arr;
-      };
-      return (function f2() {
-        return __b.apply(__this, arguments);
-      });
-    })();
-
-    JSLitmus.test('prebound function', function() {
-      f3();
-    });
-
-  </script>
-
-</body>
-</html>

examples/blocks.coffee

@@ -8,7 +8,7 @@ get '/hello', ->
 # Append.
 append: (location, data) ->
   path: new Pathname location
-  throw "Location does not exist" unless path.exists()
+  throw new Error("Location does not exist") unless path.exists()
 
   File.open path, 'a', (file) ->
     file.puts YAML.dump data

examples/code.coffee

@@ -140,24 +140,28 @@ sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna
 aliquam erat volutpat. Ut wisi enim ad."
 
 # Inheritance and calling super.
-Animal: ->
-Animal::move: (meters) ->
-  alert(this.name + " moved " + meters + "m.")
+class Animal
+  move: (meters) ->
+    alert this.name + " moved " + meters + "m."
 
-Snake: (name) -> this.name: name
-Snake extends Animal
-Snake::move: ->
-  alert('Slithering...')
-  super(5)
+class Snake extends Animal
+  constructor: (name) ->
+    @name: name
 
-Horse: (name) -> this.name: name
-Horse extends Animal
-Horse::move: ->
-  alert('Galloping...')
-  super(45)
+  move: ->
+    alert 'Slithering...'
+    super 5
 
-sam: new Snake("Sammy the Snake")
-tom: new Horse("Tommy the Horse")
+class Horse extends Animal
+  constructor: (name) ->
+    @name: name
+
+  move: ->
+    alert 'Galloping...'
+    super 45
+
+sam: new Snake "Sammy the Snake"
+tom: new Horse "Tommy the Horse"
 
 sam.move()
 tom.move()

examples/computer_science/linked_list.coffee

@@ -1,90 +1,92 @@
 # "Classic" linked list implementation that doesn't keep track of its size.
-LinkedList: ->
-  this._head: null # Pointer to the first item in the list.
+class LinkedList
+
+  constructor: ->
+    this._head: null # Pointer to the first item in the list.
 
 
-# Appends some data to the end of the list. This method traverses the existing
-# list and places the value at the end in a new node.
-LinkedList::add: (data) ->
+  # Appends some data to the end of the list. This method traverses the existing
+  # list and places the value at the end in a new node.
+  add: (data) ->
 
-  # Create a new node object to wrap the data.
-  node: {data: data, next: null}
+    # Create a new node object to wrap the data.
+    node: {data: data, next: null}
 
-  current: this._head ||= node
+    current: this._head ||= node
 
-  if this._head isnt node
-    current: current.next while current.next
-    current.next: node
+    if this._head isnt node
+      current: current.next while current.next
+      current.next: node
 
-  this
+    this
 
 
-# Retrieves the data at the given position in the list.
-LinkedList::item: (index) ->
+  # Retrieves the data at the given position in the list.
+  item: (index) ->
 
-  # Check for out-of-bounds values.
-  return null if index < 0
+    # Check for out-of-bounds values.
+    return null if index < 0
 
-  current: this._head or null
-  i: -1
+    current: this._head or null
+    i: -1
 
-  # Advance through the list.
-  current: current.next while current and index > (i += 1)
+    # Advance through the list.
+    current: current.next while current and index > (i += 1)
 
-  # Return null if we've reached the end.
-  current and current.data
+    # Return null if we've reached the end.
+    current and current.data
 
 
-# Remove the item from the given location in the list.
-LinkedList::remove: (index) ->
+  # Remove the item from the given location in the list.
+  remove: (index) ->
 
-  # Check for out-of-bounds values.
-  return null if index < 0
+    # Check for out-of-bounds values.
+    return null if index < 0
 
-  current: this._head or null
-  i: -1
+    current: this._head or null
+    i: -1
 
-  # Special case: removing the first item.
-  if index is 0
-    this._head: current.next
-  else
+    # Special case: removing the first item.
+    if index is 0
+      this._head: current.next
+    else
 
-    # Find the right location.
-    [previous, current]: [current, current.next] while index > (i += 1)
+      # Find the right location.
+      [previous, current]: [current, current.next] while index > (i += 1)
 
-    # Skip over the item to remove.
-    previous.next: current.next
+      # Skip over the item to remove.
+      previous.next: current.next
 
-  # Return the value.
-  current and current.data
+    # Return the value.
+    current and current.data
 
 
-# Calculate the number of items in the list.
-LinkedList::size: ->
-  current: this._head
-  count:   0
+  # Calculate the number of items in the list.
+  size: ->
+    current: this._head
+    count:   0
 
-  while current
-    count += 1
-    current: current.next
+    while current
+      count += 1
+      current: current.next
 
-  count
+    count
 
 
-# Convert the list into an array.
-LinkedList::toArray: ->
-  result:   []
-  current:  this._head
+  # Convert the list into an array.
+  toArray: ->
+    result:   []
+    current:  this._head
 
-  while current
-    result.push(current.data)
-    current: current.next
+    while current
+      result.push(current.data)
+      current: current.next
 
-  result
+    result
 
 
-# The string representation of the linked list.
-LinkedList::toString: -> this.toArray().toString()
+  # The string representation of the linked list.
+  toString: -> this.toArray().toString()
 
 
 # Tests.

examples/potion.coffee

@@ -53,16 +53,16 @@ for key, val of {dog: 'canine', cat: 'feline', fox: 'vulpine'}
 # Person print = ():
 #   ('My name is ', /name, '.') join print.
 
-Person: ->
-Person::print: ->
-  print('My name is ' + this.name + '.')
+class Person
+  print: ->
+    print 'My name is ' + this.name + '.'
 
 
 # p = Person ()
 # p /name string print
 
 p: new Person()
-print(p.name)
+print p.name
 
 
 # Policeman = Person class (rank): /rank = rank.
@@ -71,12 +71,13 @@ print(p.name)
 #
 # Policeman ('Constable') print
 
-Policeman: (rank) -> this.rank: rank
-Policeman extends Person
-Policeman::print: ->
-  print('My name is ' + this.name + " and I'm a " + this.rank + '.')
+class Policeman extends Person
+  constructor: (rank) ->
+    @rank: rank
+  print: ->
+    print 'My name is ' + this.name + " and I'm a " + this.rank + '.'
 
-print(new Policeman('Constable'))
+print new Policeman 'Constable'
 
 
 # app = [window (width=200, height=400)

examples/underscore.coffee

@@ -18,36 +18,55 @@
   previousUnderscore: root._
 
 
-  # If Underscore is called as a function, it returns a wrapped object that
-  # can be used OO-style. This wrapper holds altered versions of all the
-  # underscore functions. Wrapped objects may be chained.
-  wrapper: (obj) ->
-    this._wrapped: obj
-    this
-
-
   # Establish the object that gets thrown to break out of a loop iteration.
   breaker: if typeof(StopIteration) is 'undefined' then '__break__' else StopIteration
 
 
-  # Create a safe reference to the Underscore object forreference below.
-  _: root._: (obj) -> new wrapper(obj)
+  # Quick regexp-escaping function, because JS doesn't have RegExp.escape().
+  escapeRegExp: (string) -> string.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1')
+
+
+  # Save bytes in the minified (but not gzipped) version:
+  ArrayProto:           Array.prototype
+  ObjProto:             Object.prototype
+
+
+  #Create quick reference variables for speed access to core prototypes.
+  slice:                ArrayProto.slice
+  unshift:              ArrayProto.unshift
+  toString:             ObjProto.toString
+  hasOwnProperty:       ObjProto.hasOwnProperty
+  propertyIsEnumerable: ObjProto.propertyIsEnumerable
+
+
+  # All ECMA5 native implementations we hope to use are declared here.
+  nativeForEach:        ArrayProto.forEach
+  nativeMap:            ArrayProto.map
+  nativeReduce:         ArrayProto.reduce
+  nativeReduceRight:    ArrayProto.reduceRight
+  nativeFilter:         ArrayProto.filter
+  nativeEvery:          ArrayProto.every
+  nativeSome:           ArrayProto.some
+  nativeIndexOf:        ArrayProto.indexOf
+  nativeLastIndexOf:    ArrayProto.lastIndexOf
+  nativeIsArray:        Array.isArray
+  nativeKeys:           Object.keys
+
+
+  # Create a safe reference to the Underscore object for use below.
+  _: (obj) -> new wrapper(obj)
 
 
   # Export the Underscore object for CommonJS.
   if typeof(exports) != 'undefined' then exports._: _
 
 
-  # Create quick reference variables for speed access to core prototypes.
-  slice:                Array::slice
-  unshift:              Array::unshift
-  toString:             Object::toString
-  hasOwnProperty:       Object::hasOwnProperty
-  propertyIsEnumerable: Object::propertyIsEnumerable
+  # Export Underscore to global scope.
+  root._: _
 
 
   # Current version.
-  _.VERSION: '0.5.7'
+  _.VERSION: '0.6.0'
 
 
   # ------------------------ Collection Functions: ---------------------------
@@ -55,12 +74,13 @@
   # The cornerstone, an each implementation.
   # Handles objects implementing forEach, arrays, and raw objects.
   _.each: (obj, iterator, context) ->
-    index: 0
     try
-      return obj.forEach(iterator, context) if obj.forEach
-      if _.isArray(obj) or _.isArguments(obj)
-        return iterator.call(context, obj[i], i, obj) for i in [0...obj.length]
-      iterator.call(context, val, key, obj) for key, val of obj
+      if nativeForEach and obj.forEach is nativeForEach
+        obj.forEach iterator, context
+      else if _.isNumber obj.length
+        iterator.call(context, obj[i], i, obj) for i in [0...obj.length]
+      else
+        iterator.call(context, val, key, obj) for key, val of obj
     catch e
       throw e if e isnt breaker
     obj
@@ -69,28 +89,28 @@
   # Return the results of applying the iterator to each element. Use JavaScript
   # 1.6's version of map, if possible.
   _.map: (obj, iterator, context) ->
-    return obj.map(iterator, context) if (obj and _.isFunction(obj.map))
+    return obj.map(iterator, context) if nativeMap and obj.map is nativeMap
     results: []
     _.each obj, (value, index, list) ->
-      results.push(iterator.call(context, value, index, list))
+      results.push iterator.call context, value, index, list
     results
 
 
   # Reduce builds up a single result from a list of values. Also known as
   # inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
   _.reduce: (obj, memo, iterator, context) ->
-    return obj.reduce(_.bind(iterator, context), memo) if (obj and _.isFunction(obj.reduce))
+    return obj.reduce(_.bind(iterator, context), memo) if nativeReduce and obj.reduce is nativeReduce
     _.each obj, (value, index, list) ->
-      memo: iterator.call(context, memo, value, index, list)
+      memo: iterator.call context, memo, value, index, list
     memo
 
 
   # The right-associative version of reduce, also known as foldr. Uses
   # JavaScript 1.8's version of reduceRight, if available.
   _.reduceRight: (obj, memo, iterator, context) ->
-    return obj.reduceRight(_.bind(iterator, context), memo) if (obj and _.isFunction(obj.reduceRight))
+    return obj.reduceRight(_.bind(iterator, context), memo) if nativeReduceRight and obj.reduceRight is nativeReduceRight
     _.each _.clone(_.toArray(obj)).reverse(), (value, index) ->
-      memo: iterator.call(context, memo, value, index, obj)
+      memo: iterator.call context, memo, value, index, obj
     memo
 
 
@@ -98,7 +118,7 @@
   _.detect: (obj, iterator, context) ->
     result: null
     _.each obj, (value, index, list) ->
-      if iterator.call(context, value, index, list)
+      if iterator.call context, value, index, list
         result: value
         _.breakLoop()
     result
@@ -106,11 +126,11 @@
 
   # Return all the elements that pass a truth test. Use JavaScript 1.6's
   # filter(), if it exists.
-  _.select: (obj, iterator, context) ->
-    if obj and _.isFunction(obj.filter) then return obj.filter(iterator, context)
+  _.filter: (obj, iterator, context) ->
+    return obj.filter iterator, context if nativeFilter and obj.filter is nativeFilter
     results: []
     _.each obj, (value, index, list) ->
-      results.push(value) if iterator.call(context, value, index, list)
+      results.push value if iterator.call context, value, index, list
     results
 
 
@@ -118,15 +138,15 @@
   _.reject: (obj, iterator, context) ->
     results: []
     _.each obj, (value, index, list) ->
-      results.push(value) if not iterator.call(context, value, index, list)
+      results.push value if not iterator.call context, value, index, list
     results
 
 
   # Determine whether all of the elements match a truth test. Delegate to
   # JavaScript 1.6's every(), if it is present.
-  _.all: (obj, iterator, context) ->
+  _.every: (obj, iterator, context) ->
     iterator ||= _.identity
-    return obj.every(iterator, context) if obj and _.isFunction(obj.every)
+    return obj.every iterator, context if nativeEvery and obj.every is nativeEvery
     result: true
     _.each obj, (value, index, list) ->
       _.breakLoop() unless (result: result and iterator.call(context, value, index, list))
@@ -135,9 +155,9 @@
 
   # Determine if at least one element in the object matches a truth test. Use
   # JavaScript 1.6's some(), if it exists.
-  _.any: (obj, iterator, context) ->
+  _.some: (obj, iterator, context) ->
     iterator ||= _.identity
-    return obj.some(iterator, context) if obj and _.isFunction(obj.some)
+    return obj.some iterator, context if nativeSome and obj.some is nativeSome
     result: false
     _.each obj, (value, index, list) ->
       _.breakLoop() if (result: iterator.call(context, value, index, list))
@@ -147,7 +167,7 @@
   # Determine if a given value is included in the array or object,
   # based on '==='.
   _.include: (obj, target) ->
-    return _.indexOf(obj, target) isnt -1 if _.isArray(obj)
+    return _.indexOf(obj, target) isnt -1 if nativeIndexOf and obj.indexOf is nativeIndexOf
     for key, val of obj
       return true if val is target
     false
@@ -155,13 +175,13 @@
 
   # Invoke a method with arguments on every item in a collection.
   _.invoke: (obj, method) ->
-    args: _.rest(arguments, 2)
+    args: _.rest arguments, 2
     (if method then val[method] else val).apply(val, args) for val in obj
 
 
   # Convenience version of a common use case of map: fetching a property.
   _.pluck: (obj, key) ->
-    _.map(obj, ((val) -> val[key]))
+    _.map(obj, (val) -> val[key])
 
 
   # Return the maximum item or (item-based computation).
@@ -184,7 +204,7 @@
     result.value
 
 
-  # Sort the object's values by a criteria produced by an iterator.
+  # Sort the object's values by a criterion produced by an iterator.
   _.sortBy: (obj, iterator, context) ->
     _.pluck(((_.map obj, (value, index, list) ->
       {value: value, criteria: iterator.call(context, value, index, list)}
@@ -198,7 +218,8 @@
   # be inserted so as to maintain order. Uses binary search.
   _.sortedIndex: (array, obj, iterator) ->
     iterator ||= _.identity
-    low: 0; high: array.length
+    low:  0
+    high: array.length
     while low < high
       mid: (low + high) >> 1
       if iterator(array[mid]) < iterator(obj) then low: mid + 1 else high: mid
@@ -240,36 +261,36 @@
 
 
   # Trim out all falsy values from an array.
-  _.compact: (array) -> array[i] for i in [0...array.length] when array[i]
+  _.compact: (array) -> item for item in array when item
 
 
   # Return a completely flattened version of an array.
   _.flatten: (array) ->
     _.reduce array, [], (memo, value) ->
-      return memo.concat(_.flatten(value)) if _.isArray(value)
-      memo.push(value)
+      return memo.concat(_.flatten(value)) if _.isArray value
+      memo.push value
       memo
 
 
   # Return a version of the array that does not contain the specified value(s).
   _.without: (array) ->
-    values: _.rest(arguments)
-    val for val in _.toArray(array) when not _.include(values, val)
+    values: _.rest arguments
+    val for val in _.toArray(array) when not _.include values, val
 
 
   # Produce a duplicate-free version of the array. If the array has already
   # been sorted, you have the option of using a faster algorithm.
   _.uniq: (array, isSorted) ->
     memo: []
-    for el, i in _.toArray(array)
-      memo.push(el) if i is 0 || (if isSorted is true then _.last(memo) isnt el else not _.include(memo, el))
+    for el, i in _.toArray array
+      memo.push el if i is 0 || (if isSorted is true then _.last(memo) isnt el else not _.include(memo, el))
     memo
 
 
   # Produce an array that contains every item shared between all the
   # passed-in arrays.
   _.intersect: (array) ->
-    rest: _.rest(arguments)
+    rest: _.rest arguments
     _.select _.uniq(array), (item) ->
       _.all rest, (other) ->
         _.indexOf(other, item) >= 0
@@ -278,10 +299,10 @@
   # Zip together multiple lists into a single array -- elements that share
   # an index go together.
   _.zip: ->
-    length:     _.max(_.pluck(arguments, 'length'))
-    results:    new Array(length)
+    length:  _.max _.pluck arguments, 'length'
+    results: new Array length
     for i in [0...length]
-      results[i]: _.pluck(arguments, String(i))
+      results[i]: _.pluck arguments, String i
     results
 
 
@@ -289,7 +310,7 @@
   # we need this function. Return the position of the first occurence of an
   # item in an array, or -1 if the item is not included in the array.
   _.indexOf: (array, item) ->
-    return array.indexOf(item) if array.indexOf
+    return array.indexOf item if nativeIndexOf and array.indexOf is nativeIndexOf
     i: 0; l: array.length
     while l - i
       if array[i] is item then return i else i++
@@ -299,7 +320,7 @@
   # Provide JavaScript 1.6's lastIndexOf, delegating to the native function,
   # if possible.
   _.lastIndexOf: (array, item) ->
-    return array.lastIndexOf(item) if array.lastIndexOf
+    return array.lastIndexOf(item) if nativeLastIndexOf and array.lastIndexOf is nativeLastIndexOf
     i: array.length
     while i
       if array[i] is item then return i else i--
@@ -312,12 +333,12 @@
   _.range: (start, stop, step) ->
     a:        arguments
     solo:     a.length <= 1
-    i: start: if solo then 0 else a[0];
-    stop:     if solo then a[0] else a[1];
+    i: start: if solo then 0 else a[0]
+    stop:     if solo then a[0] else a[1]
     step:     a[2] or 1
     len:      Math.ceil((stop - start) / step)
     return [] if len <= 0
-    range:    new Array(len)
+    range:    new Array len
     idx:      0
     while true
       return range if (if step > 0 then i - stop else stop - i) >= 0
@@ -331,36 +352,36 @@
   # Create a function bound to a given object (assigning 'this', and arguments,
   # optionally). Binding with arguments is also known as 'curry'.
   _.bind: (func, obj) ->
-    args: _.rest(arguments, 2)
-    -> func.apply(obj or root, args.concat(arguments))
+    args: _.rest arguments, 2
+    -> func.apply obj or root, args.concat arguments
 
 
   # Bind all of an object's methods to that object. Useful for ensuring that
   # all callbacks defined on an object belong to it.
   _.bindAll: (obj) ->
     funcs: if arguments.length > 1 then _.rest(arguments) else _.functions(obj)
-    _.each(funcs, (f) -> obj[f]: _.bind(obj[f], obj))
+    _.each funcs, (f) -> obj[f]: _.bind obj[f], obj
     obj
 
 
   # Delays a function for the given number of milliseconds, and then calls
   # it with the arguments supplied.
   _.delay: (func, wait) ->
-    args: _.rest(arguments, 2)
+    args: _.rest arguments, 2
     setTimeout((-> func.apply(func, args)), wait)
 
 
   # Defers a function, scheduling it to run after the current call stack has
   # cleared.
   _.defer: (func) ->
-    _.delay.apply(_, [func, 1].concat(_.rest(arguments)))
+    _.delay.apply _, [func, 1].concat _.rest arguments
 
 
   # Returns the first function passed as an argument to the second,
   # allowing you to adjust arguments, run code before and after, and
   # conditionally execute the original function.
   _.wrap: (func, wrapper) ->
-    -> wrapper.apply(wrapper, [func].concat(arguments))
+    -> wrapper.apply wrapper, [func].concat arguments
 
 
   # Returns a function that is the composition of a list of functions, each
@@ -377,38 +398,37 @@
   # ------------------------- Object Functions: ----------------------------
 
   # Retrieve the names of an object's properties.
-  _.keys: (obj) ->
-    return _.range(0, obj.length) if _.isArray(obj)
+  _.keys: nativeKeys or (obj) ->
+    return _.range 0, obj.length if _.isArray(obj)
     key for key, val of obj
 
 
   # Retrieve the values of an object's properties.
   _.values: (obj) ->
-    _.map(obj, _.identity)
+    _.map obj, _.identity
 
 
   # Return a sorted list of the function names available in Underscore.
   _.functions: (obj) ->
-    _.select(_.keys(obj), (key) -> _.isFunction(obj[key])).sort()
+    _.filter(_.keys(obj), (key) -> _.isFunction(obj[key])).sort()
 
 
   # Extend a given object with all of the properties in a source object.
   _.extend: (destination, source) ->
-    for key, val of source
-      destination[key]: val
+    (destination[key]: val) for key, val of source
     destination
 
 
   # Create a (shallow-cloned) duplicate of an object.
   _.clone: (obj) ->
-    return obj.slice(0) if _.isArray(obj)
-    _.extend({}, obj)
+    return obj.slice 0 if _.isArray obj
+    _.extend {}, obj
 
 
   # Invokes interceptor with the obj, and then returns obj.
   # The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
   _.tap: (obj, interceptor) ->
-    interceptor(obj)
+    interceptor obj
     obj
 
 
@@ -444,12 +464,15 @@
     # Different object sizes?
     return false if aKeys.length isnt bKeys.length
     # Recursive comparison of contents.
-    # for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
-    return true
+    (return false) for key, val of a when !_.isEqual(val, b[key])
+    true
 
 
   # Is a given array or object empty?
-  _.isEmpty:      (obj) -> _.keys(obj).length is 0
+  _.isEmpty: (obj) ->
+    return obj.length is 0 if _.isArray obj
+    (return false) for key of obj when hasOwnProperty.call(obj, key)
+    true
 
 
   # Is a given value a DOM element?
@@ -457,7 +480,7 @@
 
 
   # Is a given value an array?
-  _.isArray:      (obj) -> !!(obj and obj.concat and obj.unshift)
+  _.isArray:      nativeIsArray or (obj) -> !!(obj and obj.concat and obj.unshift)
 
 
   # Is a given variable an arguments object?
@@ -477,6 +500,10 @@
   _.isNumber:     (obj) -> (obj is +obj) or toString.call(obj) is '[object Number]'
 
 
+  # Is a given value a boolean?
+  _.isBoolean:    (obj) -> obj is true or obj is false
+
+
   # Is a given value a Date?
   _.isDate:       (obj) -> !!(obj and obj.getTimezoneOffset and obj.setUTCFullYear)
 
@@ -511,10 +538,22 @@
   _.identity: (value) -> value
 
 
+  # Run a function n times.
+  _.times: (n, iterator, context) ->
+    iterator.call(context, i) for i in [0...n]
+
+
   # Break out of the middle of an iteration.
   _.breakLoop: -> throw breaker
 
 
+  # Add your own custom functions to the Underscore object, ensuring that
+  # they're correctly added to the OOP wrapper as well.
+  _.mixin: (obj) ->
+    for name in _.functions(obj)
+      addToWrapper name, _[name]: obj[name]
+
+
   # Generate a unique integer id (unique within the entire client session).
   # Useful for temporary DOM ids.
   idCounter: 0
@@ -533,14 +572,15 @@
 
   # JavaScript templating a-la ERB, pilfered from John Resig's
   # "Secrets of the JavaScript Ninja", page 83.
-  # Single-quotea fix from Rick Strahl's version.
+  # Single-quote fix from Rick Strahl's version.
   _.template: (str, data) ->
     c: _.templateSettings
+    endMatch: new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g")
     fn: new Function 'obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
       str.replace(/[\r\t\n]/g, " ")
-         .replace(new RegExp("'(?=[^"+c.end[0]+"]*"+c.end+")","g"),"\t")
+         .replace(endMatch,"\t")
          .split("'").join("\\'")
          .split("\t").join("'")
          .replace(c.interpolate, "',$1,'")
@@ -555,27 +595,39 @@
   _.forEach: _.each
   _.foldl:   _.inject:      _.reduce
   _.foldr:   _.reduceRight
-  _.filter:  _.select
-  _.every:   _.all
-  _.some:    _.any
+  _.select:  _.filter
+  _.all:     _.every
+  _.any:     _.some
   _.head:    _.first
   _.tail:    _.rest
   _.methods: _.functions
 
 
-  #   /*------------------------ Setup the OOP Wrapper: --------------------------*/
+  # ------------------------ Setup the OOP Wrapper: --------------------------
+
+  # If Underscore is called as a function, it returns a wrapped object that
+  # can be used OO-style. This wrapper holds altered versions of all the
+  # underscore functions. Wrapped objects may be chained.
+  wrapper: (obj) ->
+    this._wrapped: obj
+    this
+
 
   # Helper function to continue chaining intermediate results.
   result: (obj, chain) ->
     if chain then _(obj).chain() else obj
 
 
-  # Add all of the Underscore functions to the wrapper object.
-  _.each _.functions(_), (name) ->
-    method: _[name]
+  # A method to easily add functions to the OOP wrapper.
+  addToWrapper: (name, func) ->
     wrapper.prototype[name]: ->
-      unshift.call(arguments, this._wrapped)
-      result(method.apply(_, arguments), this._chain)
+      args: _.toArray arguments
+      unshift.call args, this._wrapped
+      result func.apply(_, args), this._chain
+
+
+  # Add all of the Underscore functions to the wrapper object.
+  _.mixin _
 
 
   # Add all mutator Array functions to the wrapper.

examples/web_server.coffee

@@ -0,0 +1,12 @@
+# Contributed by Jason Huggins
+
+http: require 'http'
+
+server: http.createServer (req, res) ->
+  res.writeHeader 200, {'Content-Type': 'text/plain'}
+  res.write 'Hello, World!'
+  res.close()
+
+server.listen 3000
+
+puts "Server running at http://localhost:3000/"

extras/CoffeeScript.tmbundle/CoffeeScript.tmPreferences

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>name</key>
+	<string>comments</string>
+	<key>scope</key>
+	<string>source.coffee</string>
+	<key>settings</key>
+	<dict>
+		<key>shellVariables</key>
+		<array>
+			<dict>
+				<key>name</key>
+				<string>TM_COMMENT_START</string>
+				<key>value</key>
+				<string># </string>
+			</dict>
+		</array>
+	</dict>
+	<key>uuid</key>
+	<string>0A92C6F6-4D73-4859-B38C-4CC19CBC191F</string>
+</dict>
+</plist>

extras/CoffeeScript.tmbundle/Macros/Overwrite '}' in ${ __ }.tmMacro

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>commands</key>
+	<array>
+		<dict>
+			<key>command</key>
+			<string>moveRightAndModifySelection:</string>
+		</dict>
+		<dict>
+			<key>argument</key>
+			<dict>
+				<key>action</key>
+				<string>replaceAll</string>
+				<key>findInProjectIgnoreCase</key>
+				<false/>
+				<key>findString</key>
+				<string>((?m:.){2,})|\}|([^}])</string>
+				<key>ignoreCase</key>
+				<false/>
+				<key>regularExpression</key>
+				<true/>
+				<key>replaceAllScope</key>
+				<string>selection</string>
+				<key>replaceString</key>
+				<string>$1}$2</string>
+				<key>wrapAround</key>
+				<false/>
+			</dict>
+			<key>command</key>
+			<string>findWithOptions:</string>
+		</dict>
+		<dict>
+			<key>command</key>
+			<string>moveLeft:</string>
+		</dict>
+		<dict>
+			<key>command</key>
+			<string>moveRight:</string>
+		</dict>
+	</array>
+	<key>keyEquivalent</key>
+	<string>}</string>
+	<key>name</key>
+	<string>Overwrite '}' in ${ .. }</string>
+	<key>scope</key>
+	<string>source.coffee string.quoted.double source.coffee.embedded</string>
+	<key>scopeType</key>
+	<string>local</string>
+	<key>uuid</key>
+	<string>D7ADBF4B-B25B-4CF6-8FC0-C4FB0C3DBE64</string>
+</dict>
+</plist>

extras/CoffeeScript.tmbundle/Snippets/Embedded Code — ${…}.tmSnippet

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>content</key>
+	<string>\${${1:$TM_SELECTED_TEXT}}</string>
+	<key>keyEquivalent</key>
+	<string>$</string>
+	<key>name</key>
+	<string>Embedded Code — ${…}</string>
+	<key>scope</key>
+	<string>string.quoted.double.coffee - string source</string>
+	<key>uuid</key>
+	<string>17C8BFF6-25F2-4F00-8E7E-768D3D186A23</string>
+</dict>
+</plist>

extras/CoffeeScript.tmbundle/Symbol List: Method.tmPreferences

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>name</key>
+	<string>Symbol List: Method</string>
+	<key>scope</key>
+	<string>source.coffee entity.name.type.instance</string>
+	<key>settings</key>
+	<dict>
+		<key>showInSymbolList</key>
+		<integer>0</integer>
+	</dict>
+	<key>uuid</key>
+	<string>B087AF2F-8946-4EA9-8409-49E7C4A2EEF0</string>
+</dict>
+</plist>

extras/CoffeeScript.tmbundle/Syntaxes/CoffeeScript.tmLanguage

@@ -7,19 +7,20 @@
 	<key>fileTypes</key>
 	<array>
 		<string>coffee</string>
+		<string>Cakefile</string>
 	</array>
-	<key>name</key>
-	<string>CoffeeScript</string>
 	<key>foldingStartMarker</key>
 	<string>^.*[:=] \{[^\}]*$</string>
 	<key>foldingStopMarker</key>
 	<string>\s*\}</string>
+	<key>name</key>
+	<string>CoffeeScript</string>
 	<key>patterns</key>
 	<array>
 		<dict>
 			<key>captures</key>
 			<dict>
-			  <key>1</key>
+				<key>1</key>
 				<dict>
 					<key>name</key>
 					<string>variable.parameter.function.coffee</string>
@@ -43,7 +44,7 @@
 			<key>comment</key>
 			<string>match stuff like: a -&gt; … </string>
 			<key>match</key>
-			<string>(\()([a-zA-Z0-9_?.$]*(,\s*[a-zA-Z0-9_?.$]+)*)(\))\s*((=|-)&gt;)</string>
+			<string>(\()([a-zA-Z0-9_?.\$]*(,\s*[a-zA-Z0-9_?.\$]+)*)(\))\s*((=|-)&gt;)</string>
 			<key>name</key>
 			<string>meta.inline.function.coffee</string>
 		</dict>
@@ -66,45 +67,9 @@
 			<key>name</key>
 			<string>meta.class.instance.constructor</string>
 		</dict>
-		<dict>
-			<key>match</key>
-			<string>\b((0(x|X)[0-9a-fA-F]+)|([0-9]+(\.[0-9]+)?(e[+\-]?[0-9]+)?))\b</string>
-			<key>name</key>
-			<string>constant.numeric.coffee</string>
-		</dict>
-		<dict>
-		  <key>match</key>
-		  <string>(@)[a-zA-Z_$]\w*</string>
-		  <key>name</key>
-		  <string>variable.other.readwrite.instance.coffee</string>
-		</dict>
-    <dict>
-      <key>name</key>
-      <string>string.quoted.heredoc.coffee</string>
-      <key>begin</key>
-      <string>("""|''')</string>
-      <key>end</key>
-      <string>("""|''')</string>
-      <key>beginCaptures</key>
-      <dict>
-				<key>0</key>
-				<dict>
-					<key>name</key>
-					<string>punctuation.definition.string.begin.coffee</string>
-				</dict>
-			</dict>
-      <key>endCaptures</key>
-      <dict>
-				<key>0</key>
-				<dict>
-					<key>name</key>
-					<string>punctuation.definition.string.end.coffee</string>
-				</dict>
-			</dict>
-    </dict>
 		<dict>
 			<key>begin</key>
-			<string>'</string>
+			<string>("""|''')</string>
 			<key>beginCaptures</key>
 			<dict>
 				<key>0</key>
@@ -114,7 +79,7 @@
 				</dict>
 			</dict>
 			<key>end</key>
-			<string>'</string>
+			<string>("""|''')</string>
 			<key>endCaptures</key>
 			<dict>
 				<key>0</key>
@@ -124,49 +89,7 @@
 				</dict>
 			</dict>
 			<key>name</key>
-			<string>string.quoted.single.coffee</string>
-			<key>patterns</key>
-			<array>
-				<dict>
-					<key>match</key>
-					<string>\\(x\h{2}|[0-2][0-7]{,2}|3[0-6][0-7]?|37[0-7]?|[4-7][0-7]?|.)</string>
-					<key>name</key>
-					<string>constant.character.escape.coffee</string>
-				</dict>
-			</array>
-		</dict>
-		<dict>
-			<key>begin</key>
-			<string>"</string>
-			<key>beginCaptures</key>
-			<dict>
-				<key>0</key>
-				<dict>
-					<key>name</key>
-					<string>punctuation.definition.string.begin.coffee</string>
-				</dict>
-			</dict>
-			<key>end</key>
-			<string>"</string>
-			<key>endCaptures</key>
-			<dict>
-				<key>0</key>
-				<dict>
-					<key>name</key>
-					<string>punctuation.definition.string.end.coffee</string>
-				</dict>
-			</dict>
-			<key>name</key>
-			<string>string.quoted.double.coffee</string>
-			<key>patterns</key>
-			<array>
-				<dict>
-					<key>match</key>
-					<string>\\(x\h{2}|[0-2][0-7]{,2}|3[0-6][0-7]|37[0-7]?|[4-7][0-7]?|.)</string>
-					<key>name</key>
-					<string>constant.character.escape.coffee</string>
-				</dict>
-			</array>
+			<string>string.quoted.heredoc.coffee</string>
 		</dict>
 		<dict>
 			<key>begin</key>
@@ -255,10 +178,67 @@
 			<string>keyword.control.coffee</string>
 		</dict>
 		<dict>
+			<key>captures</key>
+			<dict>
+				<key>1</key>
+				<dict>
+					<key>name</key>
+					<string>variable.assignment.coffee</string>
+				</dict>
+			</dict>
 			<key>match</key>
-			<string>\b([a-zA-Z$_](\w|\$|:|\.)*\s*(?=\:))</string>
+			<string>(?=[a-zA-Z\$_])([a-zA-Z\$_](\w|\$|\.)*\s*(?=(?!\::)\:(?!(\s*\(.*\))?\s*((=|-)&gt;))))</string>
 			<key>name</key>
 			<string>variable.assignment.coffee</string>
+		</dict>
+		<dict>
+			<key>begin</key>
+			<string>(\[)(?=.*?\]\s*:)</string>
+			<key>beginCaptures</key>
+			<dict>
+				<key>0</key>
+				<dict>
+					<key>name</key>
+					<string>keyword.operator.coffee</string>
+				</dict>
+			</dict>
+			<key>end</key>
+			<string>(\]\s*:)</string>
+			<key>endCaptures</key>
+			<dict>
+				<key>0</key>
+				<dict>
+					<key>name</key>
+					<string>keyword.operator.coffee</string>
+				</dict>
+			</dict>
+			<key>name</key>
+			<string>meta.variable.assignment.destructured.coffee</string>
+			<key>patterns</key>
+			<array>
+				<dict>
+					<key>include</key>
+					<string>#variable_name</string>
+				</dict>
+				<dict>
+					<key>include</key>
+					<string>#instance_variable</string>
+				</dict>
+				<dict>
+					<key>include</key>
+					<string>#single_quoted_string</string>
+				</dict>
+				<dict>
+					<key>include</key>
+					<string>#double_quoted_string</string>
+				</dict>
+				<dict>
+					<key>include</key>
+					<string>#numeric</string>
+				</dict>
+			</array>
+		</dict>
+		<dict>
 			<key>captures</key>
 			<dict>
 				<key>1</key>
@@ -267,6 +247,16 @@
 					<string>entity.name.function.coffee</string>
 				</dict>
 			</dict>
+			<key>match</key>
+			<string>(?=[a-zA-Z\$_])([a-zA-Z\$_](\w|\$|:|\.)*\s*(?=\:(\s*\(.*\))?\s*((=|-)&gt;)))</string>
+			<key>name</key>
+			<string>meta.function.coffee</string>
+		</dict>
+		<dict>
+			<key>match</key>
+			<string>(=|-)&gt;</string>
+			<key>name</key>
+			<string>storage.type.function.coffee</string>
 		</dict>
 		<dict>
 			<key>match</key>
@@ -292,18 +282,41 @@
 			<key>name</key>
 			<string>variable.language.coffee</string>
 		</dict>
+		<dict>
+			<key>captures</key>
+			<dict>
+				<key>1</key>
+				<dict>
+					<key>name</key>
+					<string>storage.type.class.coffee</string>
+				</dict>
+				<key>2</key>
+				<dict>
+					<key>name</key>
+					<string>entity.name.type.class.coffee</string>
+				</dict>
+				<key>3</key>
+				<dict>
+					<key>name</key>
+					<string>entity.other.inherited-class.coffee</string>
+				</dict>
+				<key>4</key>
+				<dict>
+					<key>name</key>
+					<string>keyword.control.inheritance.coffee</string>
+				</dict>
+			</dict>
+			<key>match</key>
+			<string>(class)\s+([a-zA-Z\$_]\w+)(\s+(extends)\s+[a-zA-Z\$_]\w*)?</string>
+			<key>name</key>
+			<string>meta.class.coffee</string>
+		</dict>
 		<dict>
 			<key>match</key>
 			<string>\b(debugger|\\)\b</string>
 			<key>name</key>
 			<string>keyword.other.coffee</string>
 		</dict>
-		<dict>
-			<key>match</key>
-			<string>(=|-)&gt;</string>
-			<key>name</key>
-			<string>storage.type.function.coffee</string>
-		</dict>
 		<dict>
 			<key>match</key>
 			<string>!|%|&amp;|\*|\/|\-\-|\-|\+\+|\+|~|===|==|=|!=|!==|&lt;=|&gt;=|&lt;&lt;=|&gt;&gt;=|&gt;&gt;&gt;=|&lt;&gt;|&lt;|&gt;|!|&amp;&amp;|\?|\|\||\:|\*=|(?&lt;!\()/=|%=|\+=|\-=|&amp;=|\^=|\b(instanceof|new|delete|typeof|and|or|is|isnt|not)\b</string>
@@ -348,11 +361,213 @@
 		</dict>
 		<dict>
 			<key>match</key>
-			<string>\[|\]</string>
+			<string>\[|\]\s*</string>
 			<key>name</key>
 			<string>meta.brace.square.coffee</string>
 		</dict>
+		<dict>
+			<key>include</key>
+			<string>#instance_variable</string>
+		</dict>
+		<dict>
+			<key>include</key>
+			<string>#single_quoted_string</string>
+		</dict>
+		<dict>
+			<key>include</key>
+			<string>#double_quoted_string</string>
+		</dict>
+		<dict>
+			<key>include</key>
+			<string>#numeric</string>
+		</dict>
 	</array>
+	<key>repository</key>
+	<dict>
+		<key>double_quoted_string</key>
+		<dict>
+			<key>patterns</key>
+			<array>
+				<dict>
+					<key>begin</key>
+					<string>"</string>
+					<key>beginCaptures</key>
+					<dict>
+						<key>0</key>
+						<dict>
+							<key>name</key>
+							<string>punctuation.definition.string.begin.coffee</string>
+						</dict>
+					</dict>
+					<key>end</key>
+					<string>"</string>
+					<key>endCaptures</key>
+					<dict>
+						<key>0</key>
+						<dict>
+							<key>name</key>
+							<string>punctuation.definition.string.end.coffee</string>
+						</dict>
+					</dict>
+					<key>name</key>
+					<string>string.quoted.double.coffee</string>
+					<key>patterns</key>
+					<array>
+						<dict>
+							<key>match</key>
+							<string>\\(x\h{2}|[0-2][0-7]{,2}|3[0-6][0-7]|37[0-7]?|[4-7][0-7]?|.)</string>
+							<key>name</key>
+							<string>constant.character.escape.coffee</string>
+						</dict>
+						<dict>
+							<key>include</key>
+							<string>#interpolated_coffee</string>
+						</dict>
+					</array>
+				</dict>
+			</array>
+		</dict>
+		<key>instance_variable</key>
+		<dict>
+			<key>patterns</key>
+			<array>
+				<dict>
+					<key>match</key>
+					<string>(@)([a-zA-Z_\$]\w*)?</string>
+					<key>name</key>
+					<string>variable.other.readwrite.instance.coffee</string>
+				</dict>
+			</array>
+		</dict>
+		<key>interpolated_coffee</key>
+		<dict>
+			<key>patterns</key>
+			<array>
+				<dict>
+					<key>begin</key>
+					<string>\$\{</string>
+					<key>captures</key>
+					<dict>
+						<key>0</key>
+						<dict>
+							<key>name</key>
+							<string>punctuation.section.embedded.coffee</string>
+						</dict>
+					</dict>
+					<key>end</key>
+					<string>\}</string>
+					<key>name</key>
+					<string>source.coffee.embedded.source</string>
+					<key>patterns</key>
+					<array>
+						<dict>
+							<key>include</key>
+							<string>$self</string>
+						</dict>
+					</array>
+				</dict>
+				<dict>
+					<key>captures</key>
+					<dict>
+						<key>1</key>
+						<dict>
+							<key>name</key>
+							<string>punctuation.definition.variable.coffee</string>
+						</dict>
+					</dict>
+					<key>match</key>
+					<string>(\$)@[a-zA-Z_]\w*(\.\w+)*</string>
+					<key>name</key>
+					<string>variable.other.readwrite.coffee</string>
+				</dict>
+				<dict>
+					<key>captures</key>
+					<dict>
+						<key>1</key>
+						<dict>
+							<key>name</key>
+							<string>punctuation.definition.variable.coffee</string>
+						</dict>
+					</dict>
+					<key>match</key>
+					<string>(\$)(?!@)[a-zA-Z_]\w*(\.\w+)*</string>
+					<key>name</key>
+					<string>source.coffee.embedded.source</string>
+				</dict>
+			</array>
+		</dict>
+		<key>numeric</key>
+		<dict>
+			<key>patterns</key>
+			<array>
+				<dict>
+					<key>match</key>
+					<string>(?&lt;!\$)\b((0(x|X)[0-9a-fA-F]+)|([0-9]+(\.[0-9]+)?(e[+\-]?[0-9]+)?))\b</string>
+					<key>name</key>
+					<string>constant.numeric.coffee</string>
+				</dict>
+			</array>
+		</dict>
+		<key>single_quoted_string</key>
+		<dict>
+			<key>patterns</key>
+			<array>
+				<dict>
+					<key>begin</key>
+					<string>'</string>
+					<key>beginCaptures</key>
+					<dict>
+						<key>0</key>
+						<dict>
+							<key>name</key>
+							<string>punctuation.definition.string.begin.coffee</string>
+						</dict>
+					</dict>
+					<key>end</key>
+					<string>'</string>
+					<key>endCaptures</key>
+					<dict>
+						<key>0</key>
+						<dict>
+							<key>name</key>
+							<string>punctuation.definition.string.end.coffee</string>
+						</dict>
+					</dict>
+					<key>name</key>
+					<string>string.quoted.single.coffee</string>
+					<key>patterns</key>
+					<array>
+						<dict>
+							<key>match</key>
+							<string>\\(x\h{2}|[0-2][0-7]{,2}|3[0-6][0-7]?|37[0-7]?|[4-7][0-7]?|.)</string>
+							<key>name</key>
+							<string>constant.character.escape.coffee</string>
+						</dict>
+					</array>
+				</dict>
+			</array>
+		</dict>
+		<key>variable_name</key>
+		<dict>
+			<key>patterns</key>
+			<array>
+				<dict>
+					<key>captures</key>
+					<dict>
+						<key>1</key>
+						<dict>
+							<key>name</key>
+							<string>variable.assignment.coffee</string>
+						</dict>
+					</dict>
+					<key>match</key>
+					<string>([a-zA-Z\$_]\w*(\.\w+)*)</string>
+					<key>name</key>
+					<string>variable.assignment.coffee</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
 	<key>scopeName</key>
 	<string>source.coffee</string>
 	<key>uuid</key>

extras/EXTRAS

@@ -1,8 +1,16 @@
-This folder includes rough cuts of CoffeeScript syntax highlighters for 
+EXTRAS:
+
+"extras/coffee-script.js" is a concatenated and compressed version of the 
+CoffeeScript compiler. To use it in the browser, include the script after any 
+inline script tags of type "text/coffeescript" on the page. It will compile
+and evaluate all of the scripts in order.
+
+
+This folder also includes rough cuts of CoffeeScript syntax highlighters for 
 TextMate and Vim. Improvements to their lexing ability are always welcome.
 
-To install the TextMate bundle, run `bin/coffee --install-bundle`, or drop it
-into "~/Library/Application Support/TextMate/Bundles".
+To install the TextMate bundle, drop it into:
+  ~/Library/Application Support/TextMate/Bundles
 
 To install the Vim highlighter, copy "coffee.vim" into the "syntax" directory of
 your vim72, and enable it in either of the following two ways:

extras/coffee.vim

@@ -28,11 +28,14 @@ syn match   coffeeSpecialCharacter "'\\.'"
 syn match   coffeeNumber	       "-\=\<\d\+L\=\>\|0[xX][0-9a-fA-F]\+\>"
 syn region  coffeeRegexpString     start=+/[^/*]+me=e-1 skip=+\\\\\|\\/+ end=+/[gi]\{0,2\}\s*$+ end=+/[gi]\{0,2\}\s*[;.,)\]}]+me=e-1 contains=@htmlPreproc oneline
 
+syn match coffeeFunctionParams "([^)]*)\s*->"
+syn match coffeeBindFunctionParams "([^)]*)\s*=>"
 syn match coffeePrototypeAccess "::"
+syn match coffeeBindFunction "=[1]>[1]"
 syn match coffeeFunction "->"
 
 syn keyword coffeeExtends   extends
-syn keyword coffeeConditional	if else switch then
+syn keyword coffeeConditional	if else switch then not
 syn keyword coffeeRepeat		while for in of
 syn keyword coffeeBranch		break continue
 syn keyword coffeeOperator		delete instanceof typeof
@@ -81,7 +84,10 @@ if version >= 508 || !exists("did_coffee_syn_inits")
   HiLink coffeeOperator		Operator
   HiLink coffeeType			Type
   HiLink coffeeStatement		Statement
+  HiLink coffeeBindFunctionParams		Function
+  HiLink coffeeFunctionParams		Function
   HiLink coffeeFunction		Function
+  HiLink coffeeBindFunction		Function
   HiLink coffeeBraces		Function
   HiLink coffeeError		Error
   HiLink coffeeScrParenError		coffeeError

lib/cake.js

@@ -0,0 +1,97 @@
+(function(){
+  var CoffeeScript, fs, no_such_task, oparse, options, optparse, path, print_tasks, switches, tasks;
+  var __hasProp = Object.prototype.hasOwnProperty;
+  // `cake` is a simplified version of [Make](http://www.gnu.org/software/make/)
+  // ([Rake](http://rake.rubyforge.org/), [Jake](http://github.com/280north/jake))
+  // for CoffeeScript. You define tasks with names and descriptions in a Cakefile,
+  // and can call them from the command line, or invoke them from other tasks.
+  // Running `cake` with no arguments will print out a list of all the tasks in the
+  // current directory's Cakefile.
+  // External dependencies.
+  fs = require('fs');
+  path = require('path');
+  optparse = require('optparse');
+  CoffeeScript = require('coffee-script');
+  // Keep track of the list of defined tasks, the accepted options, and so on.
+  tasks = {};
+  options = {};
+  switches = [];
+  oparse = null;
+  // Mixin the top-level Cake functions for Cakefiles to use directly.
+  process.mixin({
+    // Define a Cake task with a short name, a sentence description,
+    // and the function to run as the action itself.
+    task: function task(name, description, action) {
+      return tasks[name] = {
+        name: name,
+        description: description,
+        action: action
+      };
+    },
+    // Define an option that the Cakefile accepts. The parsed options hash,
+    // containing all of the command-line options passed, will be made available
+    // as the first argument to the action.
+    option: function option(letter, flag, description) {
+      return switches.push([letter, flag, description]);
+    },
+    // Invoke another task in the current Cakefile.
+    invoke: function invoke(name) {
+      if (!(tasks[name])) {
+        no_such_task(name);
+      }
+      return tasks[name].action(options);
+    }
+  });
+  // Run `cake`. Executes all of the tasks you pass, in order. Note that Node's
+  // asynchrony may cause tasks to execute in a different order than you'd expect.
+  // If no tasks are passed, print the help screen.
+  exports.run = function run() {
+    return path.exists('Cakefile', function(exists) {
+      var _a, _b, _c, _d, arg, args;
+      if (!(exists)) {
+        throw new Error("Cakefile not found in " + (process.cwd()));
+      }
+      args = process.argv.slice(2, process.argv.length);
+      CoffeeScript.run(fs.readFileSync('Cakefile'), {
+        source: 'Cakefile'
+      });
+      oparse = new optparse.OptionParser(switches);
+      if (!(args.length)) {
+        return print_tasks();
+      }
+      options = oparse.parse(args);
+      _a = []; _b = options.arguments;
+      for (_c = 0, _d = _b.length; _c < _d; _c++) {
+        arg = _b[_c];
+        _a.push(invoke(arg));
+      }
+      return _a;
+    });
+  };
+  // Display the list of Cake tasks in a format similar to `rake -T`
+  print_tasks = function print_tasks() {
+    var _a, _b, _c, _d, _e, _f, i, name, spaces, task;
+    puts('');
+    _a = tasks;
+    for (name in _a) { if (__hasProp.call(_a, name)) {
+      task = _a[name];
+      spaces = 20 - name.length;
+      spaces = spaces > 0 ? (function() {
+        _b = []; _e = 0; _f = spaces;
+        for (_d = 0, i = _e; (_e <= _f ? i <= _f : i >= _f); (_e <= _f ? i += 1 : i -= 1), _d++) {
+          _b.push(' ');
+        }
+        return _b;
+      }).call(this).join('') : '';
+      puts("cake " + name + spaces + " # " + (task.description));
+    }}
+    if (switches.length) {
+      return puts(oparse.help());
+    }
+  };
+  // Print an error and exit when attempting to all an undefined task.
+  no_such_task = function no_such_task(task) {
+    process.stdio.writeError("No such task: \"" + task + "\"\n");
+    return process.exit(1);
+  };
+})();

lib/coffee-script.js

@@ -0,0 +1,97 @@
+(function(){
+  var lexer, parser, path, process_scripts;
+  // CoffeeScript can be used both on the server, as a command-line compiler based
+  // on Node.js/V8, or to run CoffeeScripts directly in the browser. This module
+  // contains the main entry functions for tokenzing, parsing, and compiling source
+  // CoffeeScript into JavaScript.
+  // If included on a webpage, it will automatically sniff out, compile, and
+  // execute all scripts present in `text/coffeescript` tags.
+  // Set up dependencies correctly for both the server and the browser.
+  if ((typeof process !== "undefined" && process !== null)) {
+    process.mixin(require('nodes'));
+    path = require('path');
+    lexer = new (require('lexer').Lexer)();
+    parser = require('parser').parser;
+  } else {
+    lexer = new Lexer();
+    parser = exports.parser;
+    this.exports = (this.CoffeeScript = {});
+  }
+  // The current CoffeeScript version number.
+  exports.VERSION = '0.5.5';
+  // Compile a string of CoffeeScript code to JavaScript, using the Coffee/Jison
+  // compiler.
+  exports.compile = function compile(code, options) {
+    try {
+      return (parser.parse(lexer.tokenize(code))).compile(options);
+    } catch (err) {
+      if (options.source) {
+        err.message = "In " + (options.source) + ", " + (err.message);
+      }
+      throw err;
+    }
+  };
+  // Tokenize a string of CoffeeScript code, and return the array of tokens.
+  exports.tokens = function tokens(code) {
+    return lexer.tokenize(code);
+  };
+  // Tokenize and parse a string of CoffeeScript code, and return the AST. You can
+  // then compile it by calling `.compile()` on the root, or traverse it by using
+  // `.traverse()` with a callback.
+  exports.nodes = function nodes(code) {
+    return parser.parse(lexer.tokenize(code));
+  };
+  // Compile and execute a string of CoffeeScript (on the server), correctly
+  // setting `__filename`, `__dirname`, and relative `require()`.
+  exports.run = function run(code, options) {
+    var __dirname, __filename;
+    module.filename = (__filename = options.source);
+    __dirname = path.dirname(__filename);
+    return eval(exports.compile(code, options));
+  };
+  // The real Lexer produces a generic stream of tokens. This object provides a
+  // thin wrapper around it, compatible with the Jison API. We can then pass it
+  // directly as a "Jison lexer".
+  parser.lexer = {
+    lex: function lex() {
+      var token;
+      token = this.tokens[this.pos] || [""];
+      this.pos += 1;
+      this.yylineno = token[2];
+      this.yytext = token[1];
+      return token[0];
+    },
+    setInput: function setInput(tokens) {
+      this.tokens = tokens;
+      return this.pos = 0;
+    },
+    upcomingInput: function upcomingInput() {
+      return "";
+    },
+    showPosition: function showPosition() {
+      return this.pos;
+    }
+  };
+  // Activate CoffeeScript in the browser by having it compile and evaluate
+  // all script tags with a content-type of `text/coffeescript`. This happens
+  // on page load. Unfortunately, the text contents of remote scripts cannot be
+  // accessed from the browser, so only inline script tags will work.
+  if ((typeof document !== "undefined" && document !== null) && document.getElementsByTagName) {
+    process_scripts = function process_scripts() {
+      var _a, _b, _c, _d, tag;
+      _a = []; _b = document.getElementsByTagName('script');
+      for (_c = 0, _d = _b.length; _c < _d; _c++) {
+        tag = _b[_c];
+        if (tag.type === 'text/coffeescript') {
+          _a.push(eval(exports.compile(tag.innerHTML)));
+        }
+      }
+      return _a;
+    };
+    if (window.addEventListener) {
+      window.addEventListener('load', process_scripts, false);
+    } else if (window.attachEvent) {
+      window.attachEvent('onload', process_scripts);
+    }
+  }
+})();

lib/coffee-script.rb

@@ -1,21 +0,0 @@
-$LOAD_PATH.unshift(File.dirname(__FILE__))
-require "coffee_script/lexer"
-require "coffee_script/parser"
-require "coffee_script/nodes"
-require "coffee_script/value"
-require "coffee_script/scope"
-require "coffee_script/rewriter"
-require "coffee_script/parse_error"
-
-# Namespace for all CoffeeScript internal classes.
-module CoffeeScript
-
-  VERSION = '0.3.2'   # Keep in sync with the gemspec.
-
-  # Compile a script (String or IO) to JavaScript.
-  def self.compile(script, options={})
-    script = script.read if script.respond_to?(:read)
-    Parser.new.parse(script).compile(options)
-  end
-
-end

lib/coffee_script/coffee-script.js

@@ -1,50 +0,0 @@
-(function(){
-  var compiler, path;
-  // Executes the `coffee` Ruby program to convert from CoffeeScript to JavaScript.
-  path = require('path');
-  // The path to the CoffeeScript executable.
-  compiler = path.normalize(path.dirname(__filename) + '/../../bin/coffee');
-  // Compile a string over stdin, with global variables, for the REPL.
-  exports.compile = function compile(code, callback) {
-    var coffee, js;
-    js = '';
-    coffee = process.createChildProcess(compiler, ['--eval', '--no-wrap', '--globals']);
-    coffee.addListener('output', function(results) {
-      if ((typeof results !== "undefined" && results !== null)) {
-        return js += results;
-      }
-    });
-    coffee.addListener('exit', function() {
-      return callback(js);
-    });
-    coffee.write(code);
-    return coffee.close();
-  };
-  // Compile a list of CoffeeScript files on disk.
-  exports.compile_files = function compile_files(paths, callback) {
-    var coffee, exit_ran, js;
-    js = '';
-    coffee = process.createChildProcess(compiler, ['--print'].concat(paths));
-    coffee.addListener('output', function(results) {
-      if ((typeof results !== "undefined" && results !== null)) {
-        return js += results;
-      }
-    });
-    // NB: we have to add a mutex to make sure it doesn't get called twice.
-    exit_ran = false;
-    coffee.addListener('exit', function() {
-      if (exit_ran) {
-        return null;
-      }
-      exit_ran = true;
-      return callback(js);
-    });
-    return coffee.addListener('error', function(message) {
-      if (!(message)) {
-        return null;
-      }
-      puts(message);
-      throw new Error("CoffeeScript compile error");
-    });
-  };
-})();

lib/coffee_script/command_line.rb

@@ -1,235 +0,0 @@
-require 'optparse'
-require 'fileutils'
-require 'open3'
-begin
-  require File.expand_path(File.dirname(__FILE__) + '/../coffee-script')
-rescue LoadError => e
-  puts(e.message)
-  puts("use \"rake build:parser\" to regenerate parser.rb")
-  exit(1)
-end
-
-module CoffeeScript
-
-  # The CommandLine handles all of the functionality of the `coffee`
-  # utility.
-  class CommandLine
-
-    BANNER = <<-EOS
-coffee compiles CoffeeScript source files into JavaScript.
-
-Usage:
-  coffee path/to/script.coffee
-    EOS
-
-    # Seconds to pause between checks for changed source files.
-    WATCH_INTERVAL = 0.5
-
-    # Path to the root of the CoffeeScript install.
-    ROOT = File.expand_path(File.dirname(__FILE__) + '/../..')
-
-    # Commands to execute CoffeeScripts.
-    RUNNERS = {
-      :node     => "node #{ROOT}/lib/coffee_script/runner.js",
-      :narwhal  => "narwhal -p #{ROOT} -e 'require(\"coffee-script\").run(system.args);'"
-    }
-
-    # Run the CommandLine off the contents of ARGV.
-    def initialize
-      @mtimes = {}
-      parse_options
-      return launch_repl if @options[:interactive]
-      return eval_scriptlet if @options[:eval]
-      check_sources
-      return run_scripts if @options[:run]
-      @sources.each {|source| compile_javascript(source) }
-      watch_coffee_scripts if @options[:watch]
-    end
-
-    # The "--help" usage message.
-    def usage
-      puts "\n#{@option_parser}\n"
-      exit
-    end
-
-
-    private
-
-    # Compiles (or partially compiles) the source CoffeeScript file, returning
-    # the desired JS, tokens, or lint results.
-    def compile_javascript(source)
-      script = File.read(source)
-      return tokens(script) if @options[:tokens]
-      js = compile(script, source)
-      return unless js
-      return puts(js) if @options[:print]
-      return lint(js) if @options[:lint]
-      File.open(path_for(source), 'w+') {|f| f.write(js) }
-    end
-
-    # Spins up a watcher thread to keep track of the modification times of the
-    # source files, recompiling them whenever they're saved.
-    def watch_coffee_scripts
-      watch_thread = Thread.start do
-        loop do
-          @sources.each do |source|
-            mtime = File.stat(source).mtime
-            @mtimes[source] ||= mtime
-            if mtime > @mtimes[source]
-              @mtimes[source] = mtime
-              compile_javascript(source)
-            end
-          end
-          sleep WATCH_INTERVAL
-        end
-      end
-      Signal.trap("INT") { watch_thread.kill }
-      watch_thread.join
-    end
-
-    # Ensure that all of the source files exist.
-    def check_sources
-      usage if @sources.empty?
-      missing = @sources.detect {|s| !File.exists?(s) }
-      if missing
-        STDERR.puts("File not found: '#{missing}'")
-        exit(1)
-      end
-    end
-
-    # Pipe compiled JS through JSLint (requires a working 'jsl' command).
-    def lint(js)
-      stdin, stdout, stderr = Open3.popen3('jsl -nologo -stdin')
-      stdin.write(js)
-      stdin.close
-      puts stdout.read.tr("\n", '')
-      errs = stderr.read.chomp
-      puts errs unless errs.empty?
-      stdout.close and stderr.close
-    end
-
-    # Eval a little piece of CoffeeScript directly from the command line.
-    def eval_scriptlet
-      script = STDIN.tty? ? @sources.join(' ') : STDIN.read
-      return tokens(script) if @options[:tokens]
-      js = compile(script)
-      return lint(js) if @options[:lint]
-      puts js
-    end
-
-    # Use Node.js or Narwhal to run an interactive CoffeeScript session.
-    def launch_repl
-      exec "#{RUNNERS[@options[:runner]]}"
-    rescue Errno::ENOENT
-      puts "Error: #{@options[:runner]} must be installed to use the interactive REPL."
-      exit(1)
-    end
-
-    # Use Node.js or Narwhal to compile and execute CoffeeScripts.
-    def run_scripts
-      sources = @sources.join(' ')
-      exec "#{RUNNERS[@options[:runner]]} #{sources}"
-    rescue Errno::ENOENT
-      puts "Error: #{@options[:runner]} must be installed in order to execute scripts."
-      exit(1)
-    end
-
-    # Print the tokens that the lexer generates from a source script.
-    def tokens(script)
-      puts Lexer.new.tokenize(script).inspect
-    end
-
-    # Compile a single source file to JavaScript.
-    def compile(script, source='error')
-      begin
-        options = {}
-        options[:no_wrap] = true if @options[:no_wrap]
-        options[:globals] = true if @options[:globals]
-        CoffeeScript.compile(script, options)
-      rescue CoffeeScript::ParseError => e
-        STDERR.puts "#{source}: #{e.message}"
-        exit(1) unless @options[:watch]
-        nil
-      end
-    end
-
-    # Write out JavaScript alongside CoffeeScript unless an output directory
-    # is specified.
-    def path_for(source)
-      filename = File.basename(source, File.extname(source)) + '.js'
-      dir      = @options[:output] || File.dirname(source)
-      File.join(dir, filename)
-    end
-
-    # Install the CoffeeScript TextMate bundle to ~/Library.
-    def install_bundle
-      bundle_dir = File.expand_path('~/Library/Application Support/TextMate/Bundles/')
-      FileUtils.cp_r("#{ROOT}/extras/CoffeeScript.tmbundle", bundle_dir)
-    end
-
-    # Use OptionParser for all the options.
-    def parse_options
-      @options = {:runner => :node}
-      @option_parser = OptionParser.new do |opts|
-        opts.on('-i', '--interactive', 'run an interactive CoffeeScript REPL') do |i|
-          @options[:interactive] = true
-        end
-        opts.on('-r', '--run', 'compile and run a CoffeeScript') do |r|
-          @options[:run] = true
-        end
-        opts.on('-o', '--output [DIR]', 'set the directory for compiled JavaScript') do |d|
-          @options[:output] = d
-          FileUtils.mkdir_p(d) unless File.exists?(d)
-        end
-        opts.on('-w', '--watch', 'watch scripts for changes, and recompile') do |w|
-          @options[:watch] = true
-        end
-        opts.on('-p', '--print', 'print the compiled JavaScript to stdout') do |d|
-          @options[:print] = true
-        end
-        opts.on('-l', '--lint', 'pipe the compiled JavaScript through JSLint') do |l|
-          @options[:lint] = true
-        end
-        opts.on('-e', '--eval', 'compile a cli scriptlet or read from stdin') do |e|
-          @options[:eval] = true
-        end
-        opts.on('-t', '--tokens', 'print the tokens that the lexer produces') do |t|
-          @options[:tokens] = true
-        end
-        opts.on('-v', '--verbose', 'print at every step of code generation') do |v|
-          ENV['VERBOSE'] = 'true'
-        end
-        opts.on('-n', '--no-wrap', 'raw output, no function safety wrapper') do |n|
-          @options[:no_wrap] = true
-        end
-        opts.on('-g', '--globals', 'attach all top-level variable as globals') do |n|
-          @options[:globals] = true
-        end
-        opts.on_tail('--narwhal', 'use Narwhal instead of Node.js') do |n|
-          @options[:runner] = :narwhal
-        end
-        opts.on_tail('--install-bundle', 'install the CoffeeScript TextMate bundle') do |i|
-          install_bundle
-          exit
-        end
-        opts.on_tail('--version', 'display CoffeeScript version') do
-          puts "CoffeeScript version #{CoffeeScript::VERSION}"
-          exit
-        end
-        opts.on_tail('-h', '--help', 'display this help message') do
-          usage
-        end
-      end
-      @option_parser.banner = BANNER
-      begin
-        @option_parser.parse!(ARGV)
-      rescue OptionParser::InvalidOption => e
-        puts e.message
-        exit(1)
-      end
-      @sources = ARGV
-    end
-
-  end
-
-end

lib/coffee_script/grammar.y

@@ -1,481 +0,0 @@
-class Parser
-
-# Declare terminal tokens produced by the lexer.
-token IF ELSE UNLESS
-token NUMBER STRING REGEX
-token TRUE FALSE YES NO ON OFF
-token IDENTIFIER PROPERTY_ACCESS PROTOTYPE_ACCESS SOAK_ACCESS
-token CODE PARAM_START PARAM PARAM_END NEW RETURN
-token CALL_START CALL_END INDEX_START INDEX_END
-token TRY CATCH FINALLY THROW
-token BREAK CONTINUE
-token FOR IN OF BY WHEN WHILE
-token SWITCH LEADING_WHEN
-token DELETE INSTANCEOF TYPEOF
-token SUPER EXTENDS
-token ASSIGN RETURN
-token NEWLINE
-token COMMENT
-token JS
-token INDENT OUTDENT
-
-# Declare order of operations.
-prechigh
-  nonassoc UMINUS UPLUS NOT '!' '!!' '~' '++' '--'
-  left     '*' '/' '%' '?' '.'
-  left     '+' '-'
-  left     '<<' '>>' '>>>' '&' '|' '^'
-  left     '<=' '<' '>' '>='
-  right    '==' '!=' IS ISNT
-  left     '&&' '||' AND OR
-  right    '-=' '+=' '/=' '*=' '%=' '||=' '&&=' '?='
-  right    DELETE INSTANCEOF TYPEOF
-  right    INDENT
-  left     OUTDENT
-  right    WHEN LEADING_WHEN IN OF BY
-  right    THROW FOR NEW SUPER
-  left     EXTENDS
-  right    ASSIGN RETURN
-  right    '->' '=>' UNLESS IF ELSE WHILE
-preclow
-
-rule
-
-  # All parsing will end in this rule, being the trunk of the AST.
-  Root:
-    /* nothing */                     { result = Expressions.new }
-  | Terminator                        { result = Expressions.new }
-  | Expressions                       { result = val[0] }
-  | Block Terminator                  { result = val[0] }
-  ;
-
-  # Any list of expressions or method body, seperated by line breaks or semis.
-  Expressions:
-    Expression                        { result = Expressions.wrap(val) }
-  | Expressions Terminator Expression { result = val[0] << val[2] }
-  | Expressions Terminator            { result = val[0] }
-  ;
-
-  # All types of expressions in our language. The basic unit of CoffeeScript
-  # is the expression.
-  Expression:
-    Value
-  | Call
-  | Code
-  | Operation
-  | Assign
-  | If
-  | Try
-  | Throw
-  | Return
-  | While
-  | For
-  | Switch
-  | Extends
-  | Splat
-  | Existence
-  | Comment
-  ;
-
-  # A block of expressions. Note that the Rewriter will convert some postfix
-  # forms into blocks for us, by altering the token stream.
-  Block:
-    INDENT Expressions OUTDENT        { result = val[1] }
-  | INDENT OUTDENT                    { result = Expressions.new }
-  ;
-
-  # Tokens that can terminate an expression.
-  Terminator:
-    "\n"
-  | ";"
-  ;
-
-  # All hard-coded values. These can be printed straight to JavaScript.
-  Literal:
-    NUMBER                            { result = LiteralNode.new(val[0]) }
-  | STRING                            { result = LiteralNode.new(val[0]) }
-  | JS                                { result = LiteralNode.new(val[0]) }
-  | REGEX                             { result = LiteralNode.new(val[0]) }
-  | BREAK                             { result = LiteralNode.new(val[0]) }
-  | CONTINUE                          { result = LiteralNode.new(val[0]) }
-  | TRUE                              { result = LiteralNode.new(Value.new(true)) }
-  | FALSE                             { result = LiteralNode.new(Value.new(false)) }
-  | YES                               { result = LiteralNode.new(Value.new(true)) }
-  | NO                                { result = LiteralNode.new(Value.new(false)) }
-  | ON                                { result = LiteralNode.new(Value.new(true)) }
-  | OFF                               { result = LiteralNode.new(Value.new(false)) }
-  ;
-
-  # Assignment to a variable (or index).
-  Assign:
-    Value ASSIGN Expression           { result = AssignNode.new(val[0], val[2]) }
-  ;
-
-  # Assignment within an object literal (can be quoted).
-  AssignObj:
-    IDENTIFIER ASSIGN Expression      { result = AssignNode.new(ValueNode.new(val[0]), val[2], :object) }
-  | STRING ASSIGN Expression          { result = AssignNode.new(ValueNode.new(LiteralNode.new(val[0])), val[2], :object) }
-  | Comment                           { result = val[0] }
-  ;
-
-  # A return statement.
-  Return:
-    RETURN Expression                 { result = ReturnNode.new(val[1]) }
-  | RETURN                            { result = ReturnNode.new(ValueNode.new(Value.new('null'))) }
-  ;
-
-  # A comment.
-  Comment:
-    COMMENT                           { result = CommentNode.new(val[0]) }
-  ;
-
-  # Arithmetic and logical operators
-  # For Ruby's Operator precedence, see:
-  # https://www.cs.auckland.ac.nz/references/ruby/ProgrammingRuby/language.html
-  Operation:
-    '!' Expression                    { result = OpNode.new(val[0], val[1]) }
-  | '!!' Expression                   { result = OpNode.new(val[0], val[1]) }
-  | '-' Expression = UMINUS           { result = OpNode.new(val[0], val[1]) }
-  | '+' Expression = UPLUS            { result = OpNode.new(val[0], val[1]) }
-  | NOT Expression                    { result = OpNode.new(val[0], val[1]) }
-  | '~' Expression                    { result = OpNode.new(val[0], val[1]) }
-  | '--' Expression                   { result = OpNode.new(val[0], val[1]) }
-  | '++' Expression                   { result = OpNode.new(val[0], val[1]) }
-  | DELETE Expression                 { result = OpNode.new(val[0], val[1]) }
-  | TYPEOF Expression                 { result = OpNode.new(val[0], val[1]) }
-  | Expression '--'                   { result = OpNode.new(val[1], val[0], nil, true) }
-  | Expression '++'                   { result = OpNode.new(val[1], val[0], nil, true) }
-
-  | Expression '*' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '/' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '%' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression '+' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '-' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression '<<' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '>>' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '>>>' Expression       { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression '&' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '|' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '^' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression '<=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '<' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '>' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '>=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression '==' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '!=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression IS Expression          { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression ISNT Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression '&&' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '||' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression AND Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression OR Expression          { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '?' Expression         { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression '-=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '+=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '/=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '*=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '%=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '||=' Expression       { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '&&=' Expression       { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression '?=' Expression        { result = OpNode.new(val[1], val[0], val[2]) }
-
-  | Expression INSTANCEOF Expression  { result = OpNode.new(val[1], val[0], val[2]) }
-  | Expression IN Expression          { result = OpNode.new(val[1], val[0], val[2]) }
-  ;
-
-  # The existence operator.
-  Existence:
-    Expression '?'                    { result = ExistenceNode.new(val[0]) }
-  ;
-
-  # Function definition.
-  Code:
-    PARAM_START ParamList PARAM_END
-      FuncGlyph Block                 { result = CodeNode.new(val[1], val[4], val[3]) }
-  | FuncGlyph Block                   { result = CodeNode.new([], val[1], val[0]) }
-  ;
-
-  # The symbols to signify functions, and bound functions.
-  FuncGlyph:
-    '->'                              { result = :func }
-  | '=>'                              { result = :boundfunc }
-  ;
-
-  # The parameters to a function definition.
-  ParamList:
-    Param                             { result = val }
-  | ParamList "," Param               { result = val[0] << val[2] }
-  ;
-
-  # A Parameter (or ParamSplat) in a function definition.
-  Param:
-    PARAM
-  | PARAM "." "." "."                 { result = SplatNode.new(val[0]) }
-  ;
-
-  # A regular splat.
-  Splat:
-    Expression "." "." "."            { result = SplatNode.new(val[0]) }
-  ;
-
-  # Expressions that can be treated as values.
-  Value:
-    IDENTIFIER                        { result = ValueNode.new(val[0]) }
-  | Literal                           { result = ValueNode.new(val[0]) }
-  | Array                             { result = ValueNode.new(val[0]) }
-  | Object                            { result = ValueNode.new(val[0]) }
-  | Parenthetical                     { result = ValueNode.new(val[0]) }
-  | Range                             { result = ValueNode.new(val[0]) }
-  | This                              { result = ValueNode.new(val[0]) }
-  | Value Accessor                    { result = val[0] << val[1] }
-  | Invocation Accessor               { result = ValueNode.new(val[0], [val[1]]) }
-  ;
-
-  # Accessing into an object or array, through dot or index notation.
-  Accessor:
-    PROPERTY_ACCESS IDENTIFIER        { result = AccessorNode.new(val[1]) }
-  | PROTOTYPE_ACCESS IDENTIFIER       { result = AccessorNode.new(val[1], :prototype) }
-  | SOAK_ACCESS IDENTIFIER            { result = AccessorNode.new(val[1], :soak) }
-  | Index                             { result = val[0] }
-  | Slice                             { result = SliceNode.new(val[0]) }
-  ;
-
-  # Indexing into an object or array.
-  Index:
-    INDEX_START Expression INDEX_END  { result = IndexNode.new(val[1]) }
-  ;
-
-  # An object literal.
-  Object:
-    "{" AssignList "}"                { result = ObjectNode.new(val[1]) }
-  ;
-
-  # Assignment within an object literal (comma or newline separated).
-  AssignList:
-    /* nothing */                     { result = [] }
-  | AssignObj                         { result = val }
-  | AssignList "," AssignObj          { result = val[0] << val[2] }
-  | AssignList Terminator AssignObj   { result = val[0] << val[2] }
-  | AssignList ","
-      Terminator AssignObj            { result = val[0] << val[3] }
-  | INDENT AssignList OUTDENT         { result = val[1] }
-  ;
-
-  # All flavors of function call (instantiation, super, and regular).
-  Call:
-    Invocation                        { result = val[0] }
-  | NEW Invocation                    { result = val[1].new_instance }
-  | Super                             { result = val[0] }
-  ;
-
-  # Extending an object's prototype.
-  Extends:
-    Value EXTENDS Value               { result = ExtendsNode.new(val[0], val[2]) }
-  ;
-
-  # A generic function invocation.
-  Invocation:
-    Value Arguments                   { result = CallNode.new(val[0], val[1]) }
-  | Invocation Arguments              { result = CallNode.new(val[0], val[1]) }
-  ;
-
-  # The list of arguments to a function invocation.
-  Arguments:
-    CALL_START ArgList CALL_END       { result = val[1] }
-  ;
-
-  # Calling super.
-  Super:
-    SUPER CALL_START ArgList CALL_END { result = CallNode.new(Value.new('super'), val[2]) }
-  ;
-
-  # This references, either naked or to a property.
-  This:
-    '@'                               { result = ThisNode.new }
-  | '@' IDENTIFIER                    { result = ThisNode.new(val[1]) }
-  ;
-
-  # The range literal.
-  Range:
-    "[" Expression
-      "." "." Expression "]"          { result = RangeNode.new(val[1], val[4]) }
-  | "[" Expression
-      "." "." "." Expression "]"      { result = RangeNode.new(val[1], val[5], true) }
-  ;
-
-  # The slice literal.
-  Slice:
-    INDEX_START Expression "." "."
-      Expression INDEX_END            { result = RangeNode.new(val[1], val[4]) }
-  | INDEX_START Expression "." "." "."
-      Expression INDEX_END            { result = RangeNode.new(val[1], val[5], true) }
-  ;
-
-  # The array literal.
-  Array:
-    "[" ArgList "]"                   { result = ArrayNode.new(val[1]) }
-  ;
-
-  # A list of arguments to a method call, or as the contents of an array.
-  ArgList:
-    /* nothing */                     { result = [] }
-  | Expression                        { result = val }
-  | INDENT Expression                 { result = [val[1]] }
-  | ArgList "," Expression            { result = val[0] << val[2] }
-  | ArgList Terminator Expression     { result = val[0] << val[2] }
-  | ArgList "," Terminator Expression { result = val[0] << val[3] }
-  | ArgList "," INDENT Expression     { result = val[0] << val[3] }
-  | ArgList OUTDENT                   { result = val[0] }
-  ;
-
-  # Just simple, comma-separated, required arguments (no fancy syntax).
-  SimpleArgs:
-    Expression                        { result = val[0] }
-  | SimpleArgs "," Expression         { result = ([val[0]] << val[2]).flatten }
-  ;
-
-  # Try/catch/finally exception handling blocks.
-  Try:
-    TRY Block Catch                   { result = TryNode.new(val[1], val[2][0], val[2][1]) }
-  | TRY Block FINALLY Block           { result = TryNode.new(val[1], nil, nil, val[3]) }
-  | TRY Block Catch
-      FINALLY Block                   { result = TryNode.new(val[1], val[2][0], val[2][1], val[4]) }
-  ;
-
-  # A catch clause.
-  Catch:
-    CATCH IDENTIFIER Block            { result = [val[1], val[2]] }
-  ;
-
-  # Throw an exception.
-  Throw:
-    THROW Expression                  { result = ThrowNode.new(val[1]) }
-  ;
-
-  # Parenthetical expressions.
-  Parenthetical:
-    "(" Expression ")"                { result = ParentheticalNode.new(val[1], val[0].line) }
-  ;
-
-  # The while loop. (there is no do..while).
-  While:
-    WHILE Expression Block            { result = WhileNode.new(val[1], val[2]) }
-  | WHILE Expression                  { result = WhileNode.new(val[1], nil) }
-  | Expression WHILE Expression       { result = WhileNode.new(val[2], Expressions.wrap(val[0])) }
-  ;
-
-  # Array comprehensions, including guard and current index.
-  # Looks a little confusing, check nodes.rb for the arguments to ForNode.
-  For:
-    Expression FOR
-      ForVariables ForSource          { result = ForNode.new(val[0], val[3], val[2][0], val[2][1]) }
-  | FOR ForVariables ForSource Block  { result = ForNode.new(val[3], val[2], val[1][0], val[1][1]) }
-  ;
-
-  # An array comprehension has variables for the current element and index.
-  ForVariables:
-    IDENTIFIER                        { result = val }
-  | IDENTIFIER "," IDENTIFIER         { result = [val[0], val[2]] }
-  ;
-
-  # The source of the array comprehension can optionally be filtered.
-  ForSource:
-    IN Expression                     { result = {:source => val[1]} }
-  | OF Expression                     { result = {:source => val[1], :object => true} }
-  | ForSource
-    WHEN Expression                   { result = val[0].merge(:filter => val[2]) }
-  | ForSource
-    BY Expression                     { result = val[0].merge(:step => val[2]) }
-  ;
-
-  # Switch/When blocks.
-  Switch:
-    SWITCH Expression INDENT
-      Whens OUTDENT                   { result = val[3].rewrite_condition(val[1]) }
-  | SWITCH Expression INDENT
-      Whens ELSE Block OUTDENT        { result = val[3].rewrite_condition(val[1]).add_else(val[5]) }
-  ;
-
-  # The inner list of whens.
-  Whens:
-    When                              { result = val[0] }
-  | Whens When                        { result = val[0] << val[1] }
-  ;
-
-  # An individual when.
-  When:
-    LEADING_WHEN SimpleArgs Block     { result = IfNode.new(val[1], val[2], nil, {:statement => true}) }
-  | LEADING_WHEN SimpleArgs Block
-      Terminator                      { result = IfNode.new(val[1], val[2], nil, {:statement => true}) }
-  | Comment Terminator When           { result = val[2].add_comment(val[0]) }
-  ;
-
-  # The most basic form of "if".
-  IfBlock:
-    IF Expression Block               { result = IfNode.new(val[1], val[2]) }
-  ;
-
-  # An elsif portion of an if-else block.
-  ElsIf:
-    ELSE IfBlock                      { result = val[1].force_statement }
-  ;
-
-  # Multiple elsifs can be chained together.
-  ElsIfs:
-    ElsIf                             { result = val[0] }
-  | ElsIfs ElsIf                      { result = val[0].add_else(val[1]) }
-  ;
-
-  # Terminating else bodies are strictly optional.
-  ElseBody
-    /* nothing */                     { result = nil }
-  | ELSE Block                        { result = val[1] }
-  ;
-
-  # All the alternatives for ending an if-else block.
-  IfEnd:
-    ElseBody                          { result = val[0] }
-  | ElsIfs ElseBody                   { result = val[0].add_else(val[1]) }
-  ;
-
-  # The full complement of if blocks, including postfix one-liner ifs and unlesses.
-  If:
-    IfBlock IfEnd                     { result = val[0].add_else(val[1]) }
-  | Expression IF Expression          { result = IfNode.new(val[2], Expressions.wrap(val[0]), nil, {:statement => true}) }
-  | Expression UNLESS Expression      { result = IfNode.new(val[2], Expressions.wrap(val[0]), nil, {:statement => true, :invert => true}) }
-  ;
-
-end
-
----- header
-module CoffeeScript
-
----- inner
-  # Lex and parse a CoffeeScript.
-  def parse(code)
-    # Uncomment the following line to enable grammar debugging, in combination
-    # with the -g flag in the Rake build task.
-    # @yydebug = true
-    @tokens = Lexer.new.tokenize(code)
-    do_parse
-  end
-
-  # Retrieve the next token from the list.
-  def next_token
-    @tokens.shift
-  end
-
-  # Raise a custom error class that knows about line numbers.
-  def on_error(error_token_id, error_value, value_stack)
-    raise ParseError.new(token_to_str(error_token_id), error_value, value_stack)
-  end
-
----- footer
-end

lib/coffee_script/lexer.js

@@ -1,363 +0,0 @@
-(function(){
-  var ASSIGNMENT, CALLABLE, CODE, COMMENT, COMMENT_CLEANER, HEREDOC, HEREDOC_INDENT, IDENTIFIER, JS, JS_CLEANER, KEYWORDS, LAST_DENT, LAST_DENTS, MULTILINER, MULTI_DENT, NOT_REGEX, NO_NEWLINE, NUMBER, OPERATOR, REGEX, Rewriter, STRING, STRING_NEWLINES, WHITESPACE, lex;
-  Rewriter = require('./rewriter').Rewriter;
-  // The lexer reads a stream of CoffeeScript and divvys it up into tagged
-  // tokens. A minor bit of the ambiguity in the grammar has been avoided by
-  // pushing some extra smarts into the Lexer.
-  exports.Lexer = (lex = function lex() {  });
-  // Constants ============================================================
-  // The list of keywords passed verbatim to the parser.
-  KEYWORDS = ["if", "else", "then", "unless", "true", "false", "yes", "no", "on", "off", "and", "or", "is", "isnt", "not", "new", "return", "arguments", "try", "catch", "finally", "throw", "break", "continue", "for", "in", "of", "by", "where", "while", "delete", "instanceof", "typeof", "switch", "when", "super", "extends"];
-  // Token matching regexes.
-  IDENTIFIER = /^([a-zA-Z$_](\w|\$)*)/;
-  NUMBER = /^(\b((0(x|X)[0-9a-fA-F]+)|([0-9]+(\.[0-9]+)?(e[+\-]?[0-9]+)?)))\b/i;
-  STRING = /^(""|''|"([\s\S]*?)([^\\]|\\\\)"|'([\s\S]*?)([^\\]|\\\\)')/;
-  HEREDOC = /^("{6}|'{6}|"{3}\n?([\s\S]*?)\n?([ \t]*)"{3}|'{3}\n?([\s\S]*?)\n?([ \t]*)'{3})/;
-  JS = /^(``|`([\s\S]*?)([^\\]|\\\\)`)/;
-  OPERATOR = /^([+\*&|\/\-%=<>:!?]+)/;
-  WHITESPACE = /^([ \t]+)/;
-  COMMENT = /^(((\n?[ \t]*)?#.*$)+)/;
-  CODE = /^((-|=)>)/;
-  REGEX = /^(\/(.*?)([^\\]|\\\\)\/[imgy]{0,4})/;
-  MULTI_DENT = /^((\n([ \t]*))+)(\.)?/;
-  LAST_DENTS = /\n([ \t]*)/g;
-  LAST_DENT = /\n([ \t]*)/;
-  ASSIGNMENT = /^(:|=)$/;
-  // Token cleaning regexes.
-  JS_CLEANER = /(^`|`$)/g;
-  MULTILINER = /\n/g;
-  STRING_NEWLINES = /\n[ \t]*/g;
-  COMMENT_CLEANER = /(^[ \t]*#|\n[ \t]*$)/mg;
-  NO_NEWLINE = /^([+\*&|\/\-%=<>:!.\\][<>=&|]*|and|or|is|isnt|not|delete|typeof|instanceof)$/;
-  HEREDOC_INDENT = /^[ \t]+/g;
-  // Tokens which a regular expression will never immediately follow, but which
-  // a division operator might.
-  // See: http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions
-  NOT_REGEX = ['IDENTIFIER', 'NUMBER', 'REGEX', 'STRING', ')', '++', '--', ']', '}', 'FALSE', 'NULL', 'TRUE'];
-  // Tokens which could legitimately be invoked or indexed.
-  CALLABLE = ['IDENTIFIER', 'SUPER', ')', ']', '}', 'STRING'];
-  // Scan by attempting to match tokens one character at a time. Slow and steady.
-  lex.prototype.tokenize = function tokenize(code) {
-    this.code = code;
-    // Cleanup code by remove extra line breaks, TODO: chomp
-    this.i = 0;
-    // Current character position we're parsing
-    this.line = 1;
-    // The current line.
-    this.indent = 0;
-    // The current indent level.
-    this.indents = [];
-    // The stack of all indent levels we are currently within.
-    this.tokens = [];
-    // Collection of all parsed tokens in the form [:TOKEN_TYPE, value]
-    this.spaced = null;
-    // The last token that has a space following it.
-    while (this.i < this.code.length) {
-      this.chunk = this.code.slice(this.i);
-      this.extract_next_token();
-    }
-    this.close_indentation();
-    return (new Rewriter()).rewrite(this.tokens);
-  };
-  // At every position, run through this list of attempted matches,
-  // short-circuiting if any of them succeed.
-  lex.prototype.extract_next_token = function extract_next_token() {
-    if (this.identifier_token()) {
-      return null;
-    }
-    if (this.number_token()) {
-      return null;
-    }
-    if (this.heredoc_token()) {
-      return null;
-    }
-    if (this.string_token()) {
-      return null;
-    }
-    if (this.js_token()) {
-      return null;
-    }
-    if (this.regex_token()) {
-      return null;
-    }
-    if (this.indent_token()) {
-      return null;
-    }
-    if (this.comment_token()) {
-      return null;
-    }
-    if (this.whitespace_token()) {
-      return null;
-    }
-    return this.literal_token();
-  };
-  // Tokenizers ==========================================================
-  // Matches identifying literals: variables, keywords, method names, etc.
-  lex.prototype.identifier_token = function identifier_token() {
-    var id, tag;
-    if (!((id = this.match(IDENTIFIER, 1)))) {
-      return false;
-    }
-    // Keywords are special identifiers tagged with their own name,
-    // 'if' will result in an ['IF', "if"] token.
-    tag = KEYWORDS.indexOf(id) >= 0 ? id.toUpperCase() : 'IDENTIFIER';
-    if (tag === 'WHEN' && (this.tag() === 'OUTDENT' || this.tag() === 'INDENT')) {
-      tag = 'LEADING_WHEN';
-    }
-    if (tag === 'IDENTIFIER' && this.value() === '::') {
-      this.tag(-1, 'PROTOTYPE_ACCESS');
-    }
-    if (tag === 'IDENTIFIER' && this.value() === '.' && !(this.value(-2) === '.')) {
-      if (this.tag(-2) === '?') {
-        this.tag(-1, 'SOAK_ACCESS');
-        this.tokens.splice(-2, 1);
-      } else {
-        this.tag(-1, 'PROPERTY_ACCESS');
-      }
-    }
-    this.token(tag, id);
-    this.i += id.length;
-    return true;
-  };
-  // Matches numbers, including decimals, hex, and exponential notation.
-  lex.prototype.number_token = function number_token() {
-    var number;
-    if (!((number = this.match(NUMBER, 1)))) {
-      return false;
-    }
-    this.token('NUMBER', number);
-    this.i += number.length;
-    return true;
-  };
-  // Matches strings, including multi-line strings.
-  lex.prototype.string_token = function string_token() {
-    var escaped, string;
-    if (!((string = this.match(STRING, 1)))) {
-      return false;
-    }
-    escaped = string.replace(STRING_NEWLINES, " \\\n");
-    this.token('STRING', escaped);
-    this.line += this.count(string, "\n");
-    this.i += string.length;
-    return true;
-  };
-  // Matches heredocs, adjusting indentation to the correct level.
-  lex.prototype.heredoc_token = function heredoc_token() {
-    var doc, indent, match;
-    if (!((match = this.chunk.match(HEREDOC)))) {
-      return false;
-    }
-    doc = match[2] || match[4];
-    indent = doc.match(HEREDOC_INDENT).sort()[0];
-    doc = doc.replace(new RegExp("^" + indent, 'g'), '').replace(MULTILINER, "\\n").replace('"', '\\"');
-    this.token('STRING', '"' + doc + '"');
-    this.line += this.count(match[1], "\n");
-    this.i += match[1].length;
-    return true;
-  };
-  // Matches interpolated JavaScript.
-  lex.prototype.js_token = function js_token() {
-    var script;
-    if (!((script = this.match(JS, 1)))) {
-      return false;
-    }
-    this.token('JS', script.replace(JS_CLEANER, ''));
-    this.i += script.length;
-    return true;
-  };
-  // Matches regular expression literals.
-  lex.prototype.regex_token = function regex_token() {
-    var regex;
-    if (!((regex = this.match(REGEX, 1)))) {
-      return false;
-    }
-    if (NOT_REGEX.indexOf(this.tag()) >= 0) {
-      return false;
-    }
-    this.token('REGEX', regex);
-    this.i += regex.length;
-    return true;
-  };
-  // Matches and conumes comments.
-  lex.prototype.comment_token = function comment_token() {
-    var comment;
-    if (!((comment = this.match(COMMENT, 1)))) {
-      return false;
-    }
-    this.line += comment.match(MULTILINER).length;
-    this.token('COMMENT', comment.replace(COMMENT_CLEANER, '').split(MULTILINER));
-    this.token('TERMINATOR', "\n");
-    this.i += comment.length;
-    return true;
-  };
-  // Record tokens for indentation differing from the previous line.
-  lex.prototype.indent_token = function indent_token() {
-    var diff, indent, next_character, no_newlines, size;
-    if (!((indent = this.match(MULTI_DENT, 1)))) {
-      return false;
-    }
-    this.line += indent.match(MULTILINER).length;
-    this.i += indent.length;
-    next_character = this.chunk.match(MULTI_DENT)[4];
-    no_newlines = next_character === '.' || (this.value().match(NO_NEWLINE) && this.tokens[this.tokens.length - 2][0] !== '.' && !this.value().match(CODE));
-    if (no_newlines) {
-      return this.suppress_newlines(indent);
-    }
-    size = indent.match(LAST_DENTS).reverse()[0].match(LAST_DENT)[1].length;
-    if (size === this.indent) {
-      return this.newline_token(indent);
-    }
-    if (size > this.indent) {
-      diff = size - this.indent;
-      this.token('INDENT', diff);
-      this.indents.push(diff);
-    } else {
-      this.outdent_token(this.indent - size);
-    }
-    this.indent = size;
-    return true;
-  };
-  // Record an oudent token or tokens, if we're moving back inwards past
-  // multiple recorded indents.
-  lex.prototype.outdent_token = function outdent_token(move_out) {
-    var last_indent;
-    while (move_out > 0 && this.indents.length) {
-      last_indent = this.indents.pop();
-      this.token('OUTDENT', last_indent);
-      move_out -= last_indent;
-    }
-    this.token('TERMINATOR', "\n");
-    return true;
-  };
-  // Matches and consumes non-meaningful whitespace.
-  lex.prototype.whitespace_token = function whitespace_token() {
-    var space;
-    if (!((space = this.match(WHITESPACE, 1)))) {
-      return false;
-    }
-    this.spaced = this.value();
-    this.i += space.length;
-    return true;
-  };
-  // Multiple newlines get merged together.
-  // Use a trailing \ to escape newlines.
-  lex.prototype.newline_token = function newline_token(newlines) {
-    if (!(this.value() === "\n")) {
-      this.token('TERMINATOR', "\n");
-    }
-    return true;
-  };
-  // Tokens to explicitly escape newlines are removed once their job is done.
-  lex.prototype.suppress_newlines = function suppress_newlines(newlines) {
-    if (this.value() === "\\") {
-      this.tokens.pop();
-    }
-    return true;
-  };
-  // We treat all other single characters as a token. Eg.: ( ) , . !
-  // Multi-character operators are also literal tokens, so that Racc can assign
-  // the proper order of operations.
-  lex.prototype.literal_token = function literal_token() {
-    var match, tag, value;
-    match = this.chunk.match(OPERATOR);
-    value = match && match[1];
-    if (value && value.match(CODE)) {
-      this.tag_parameters();
-    }
-    value = value || this.chunk.substr(0, 1);
-    tag = value.match(ASSIGNMENT) ? 'ASSIGN' : value;
-    if (value === ';') {
-      tag = 'TERMINATOR';
-    }
-    if (this.value() !== this.spaced && CALLABLE.indexOf(this.tag()) >= 0) {
-      if (value === '(') {
-        tag = 'CALL_START';
-      }
-      if (value === '[') {
-        tag = 'INDEX_START';
-      }
-    }
-    this.token(tag, value);
-    this.i += value.length;
-    return true;
-  };
-  // Helpers =============================================================
-  // Add a token to the results, taking note of the line number.
-  lex.prototype.token = function token(tag, value) {
-    return this.tokens.push([tag, value]);
-    // this.tokens.push([tag, Value.new(value, @line)])
-  };
-  // Look at a tag in the current token stream.
-  lex.prototype.tag = function tag(index, tag) {
-    var tok;
-    if (!((tok = this.tokens[this.tokens.length - (index || 1)]))) {
-      return null;
-    }
-    if ((typeof tag !== "undefined" && tag !== null)) {
-      return (tok[0] = tag);
-    }
-    return tok[0];
-  };
-  // Look at a value in the current token stream.
-  lex.prototype.value = function value(index, val) {
-    var tok;
-    if (!((tok = this.tokens[this.tokens.length - (index || 1)]))) {
-      return null;
-    }
-    if ((typeof val !== "undefined" && val !== null)) {
-      return (tok[1] = val);
-    }
-    return tok[1];
-  };
-  // Count the occurences of a character in a string.
-  lex.prototype.count = function count(string, letter) {
-    var num, pos;
-    num = 0;
-    pos = string.indexOf(letter);
-    while (pos !== -1) {
-      count += 1;
-      pos = string.indexOf(letter, pos + 1);
-    }
-    return count;
-  };
-  // Attempt to match a string against the current chunk, returning the indexed
-  // match.
-  lex.prototype.match = function match(regex, index) {
-    var m;
-    if (!((m = this.chunk.match(regex)))) {
-      return false;
-    }
-    return m ? m[index] : false;
-  };
-  // A source of ambiguity in our grammar was parameter lists in function
-  // definitions (as opposed to argument lists in function calls). Tag
-  // parameter identifiers in order to avoid this. Also, parameter lists can
-  // make use of splats.
-  lex.prototype.tag_parameters = function tag_parameters() {
-    var i, tok;
-    if (this.tag() !== ')') {
-      return null;
-    }
-    i = 0;
-    while (true) {
-      i += 1;
-      tok = this.tokens[this.tokens.length - i];
-      if (!tok) {
-        return null;
-      }
-      if (tok[0] === 'IDENTIFIER') {
-        tok[0] = 'PARAM';
-      } else if (tok[0] === ')') {
-        tok[0] = 'PARAM_END';
-      } else if (tok[0] === '(') {
-        return (tok[0] = 'PARAM_START');
-      }
-    }
-    return true;
-  };
-  // Close up all remaining open blocks. IF the first token is an indent,
-  // axe it.
-  lex.prototype.close_indentation = function close_indentation() {
-    return this.outdent_token(this.indent);
-  };
-})();

lib/coffee_script/lexer.rb

@@ -1,272 +0,0 @@
-module CoffeeScript
-
-  # The lexer reads a stream of CoffeeScript and divvys it up into tagged
-  # tokens. A minor bit of the ambiguity in the grammar has been avoided by
-  # pushing some extra smarts into the Lexer.
-  class Lexer
-
-    # The list of keywords passed verbatim to the parser.
-    KEYWORDS   = ["if", "else", "then", "unless",
-                  "true", "false", "yes", "no", "on", "off",
-                  "and", "or", "is", "isnt", "not",
-                  "new", "return",
-                  "try", "catch", "finally", "throw",
-                  "break", "continue",
-                  "for", "in", "of", "by", "where", "while",
-                  "delete", "instanceof", "typeof",
-                  "switch", "when",
-                  "super", "extends"]
-
-    # Token matching regexes.
-    IDENTIFIER = /\A([a-zA-Z$_](\w|\$)*)/
-    NUMBER     = /\A(\b((0(x|X)[0-9a-fA-F]+)|([0-9]+(\.[0-9]+)?(e[+\-]?[0-9]+)?)))\b/i
-    STRING     = /\A(""|''|"(.*?)([^\\]|\\\\)"|'(.*?)([^\\]|\\\\)')/m
-    HEREDOC    = /\A("{6}|'{6}|"{3}\n?(.*?)\n?([ \t]*)"{3}|'{3}\n?(.*?)\n?([ \t]*)'{3})/m
-    JS         = /\A(``|`(.*?)([^\\]|\\\\)`)/m
-    OPERATOR   = /\A([+\*&|\/\-%=<>:!?]+)/
-    WHITESPACE = /\A([ \t]+)/
-    COMMENT    = /\A(((\n?[ \t]*)?#.*$)+)/
-    CODE       = /\A((-|=)>)/
-    REGEX      = /\A(\/(.*?)([^\\]|\\\\)\/[imgy]{0,4})/
-    MULTI_DENT = /\A((\n([ \t]*))+)(\.)?/
-    LAST_DENT  = /\n([ \t]*)/
-    ASSIGNMENT = /\A(:|=)\Z/
-
-    # Token cleaning regexes.
-    JS_CLEANER      = /(\A`|`\Z)/
-    MULTILINER      = /\n/
-    STRING_NEWLINES = /\n[ \t]*/
-    COMMENT_CLEANER = /(^[ \t]*#|\n[ \t]*$)/
-    NO_NEWLINE      = /\A([+\*&|\/\-%=<>:!.\\][<>=&|]*|and|or|is|isnt|not|delete|typeof|instanceof)\Z/
-    HEREDOC_INDENT  = /^[ \t]+/
-
-    # Tokens which a regular expression will never immediately follow, but which
-    # a division operator might.
-    # See: http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions
-    NOT_REGEX  = [
-      :IDENTIFIER, :NUMBER, :REGEX, :STRING,
-      ')', '++', '--', ']', '}',
-      :FALSE, :NULL, :TRUE
-    ]
-
-    # Tokens which could legitimately be invoked or indexed.
-    CALLABLE = [:IDENTIFIER, :SUPER, ')', ']', '}', :STRING]
-
-    # Scan by attempting to match tokens one character at a time. Slow and steady.
-    def tokenize(code)
-      @code    = code.chomp # Cleanup code by remove extra line breaks
-      @i       = 0          # Current character position we're parsing
-      @line    = 1          # The current line.
-      @indent  = 0          # The current indent level.
-      @indents = []         # The stack of all indent levels we are currently within.
-      @tokens  = []         # Collection of all parsed tokens in the form [:TOKEN_TYPE, value]
-      @spaced  = nil        # The last value that has a space following it.
-      while @i < @code.length
-        @chunk = @code[@i..-1]
-        extract_next_token
-      end
-      puts "original stream: #{@tokens.inspect}" if ENV['VERBOSE']
-      close_indentation
-      Rewriter.new.rewrite(@tokens)
-    end
-
-    # At every position, run through this list of attempted matches,
-    # short-circuiting if any of them succeed.
-    def extract_next_token
-      return if identifier_token
-      return if number_token
-      return if heredoc_token
-      return if string_token
-      return if js_token
-      return if regex_token
-      return if indent_token
-      return if comment_token
-      return if whitespace_token
-      return    literal_token
-    end
-
-    # Tokenizers ==========================================================
-
-    # Matches identifying literals: variables, keywords, method names, etc.
-    def identifier_token
-      return false unless identifier = @chunk[IDENTIFIER, 1]
-      # Keywords are special identifiers tagged with their own name,
-      # 'if' will result in an [:IF, "if"] token.
-      tag = KEYWORDS.include?(identifier) ? identifier.upcase.to_sym : :IDENTIFIER
-      tag = :LEADING_WHEN if tag == :WHEN && [:OUTDENT, :INDENT, "\n"].include?(last_tag)
-      @tokens[-1][0] = :PROTOTYPE_ACCESS if tag == :IDENTIFIER && last_value == '::'
-      if tag == :IDENTIFIER && last_value == '.' && !(@tokens[-2] && @tokens[-2][1] == '.')
-        if @tokens[-2][0] == "?"
-          @tokens[-1][0] = :SOAK_ACCESS
-          @tokens.delete_at(-2)
-        else
-          @tokens[-1][0] = :PROPERTY_ACCESS
-        end
-      end
-      token(tag, identifier)
-      @i += identifier.length
-    end
-
-    # Matches numbers, including decimals, hex, and exponential notation.
-    def number_token
-      return false unless number = @chunk[NUMBER, 1]
-      token(:NUMBER, number)
-      @i += number.length
-    end
-
-    # Matches strings, including multi-line strings.
-    def string_token
-      return false unless string = @chunk[STRING, 1]
-      escaped = string.gsub(STRING_NEWLINES, " \\\n")
-      token(:STRING, escaped)
-      @line += string.count("\n")
-      @i += string.length
-    end
-
-    # Matches heredocs, adjusting indentation to the correct level.
-    def heredoc_token
-      return false unless match = @chunk.match(HEREDOC)
-      doc = match[2] || match[4]
-      indent = doc.scan(HEREDOC_INDENT).min
-      doc.gsub!(/^#{indent}/, "")
-      doc.gsub!("\n", "\\n")
-      doc.gsub!('"', '\\"')
-      token(:STRING, "\"#{doc}\"")
-      @line += match[1].count("\n")
-      @i += match[1].length
-    end
-
-    # Matches interpolated JavaScript.
-    def js_token
-      return false unless script = @chunk[JS, 1]
-      token(:JS, script.gsub(JS_CLEANER, ''))
-      @i += script.length
-    end
-
-    # Matches regular expression literals.
-    def regex_token
-      return false unless regex = @chunk[REGEX, 1]
-      return false if NOT_REGEX.include?(last_tag)
-      token(:REGEX, regex)
-      @i += regex.length
-    end
-
-    # Matches and consumes comments.
-    def comment_token
-      return false unless comment = @chunk[COMMENT, 1]
-      @line += comment.scan(MULTILINER).length
-      token(:COMMENT, comment.gsub(COMMENT_CLEANER, '').split(MULTILINER))
-      token("\n", "\n")
-      @i += comment.length
-    end
-
-    # Record tokens for indentation differing from the previous line.
-    def indent_token
-      return false unless indent = @chunk[MULTI_DENT, 1]
-      @line += indent.scan(MULTILINER).size
-      @i += indent.size
-      next_character = @chunk[MULTI_DENT, 4]
-      no_newlines = next_character == '.' || (last_value.to_s.match(NO_NEWLINE) && @tokens[-2][0] != '.'  && !last_value.match(CODE))
-      return suppress_newlines(indent) if no_newlines
-      size = indent.scan(LAST_DENT).last.last.length
-      return newline_token(indent) if size == @indent
-      if size > @indent
-        token(:INDENT, size - @indent)
-        @indents << (size - @indent)
-      else
-        outdent_token(@indent - size)
-      end
-      @indent = size
-    end
-
-    # Record an oudent token or tokens, if we're moving back inwards past
-    # multiple recorded indents.
-    def outdent_token(move_out)
-      while move_out > 0 && !@indents.empty?
-        last_indent = @indents.pop
-        token(:OUTDENT, last_indent)
-        move_out -= last_indent
-      end
-      token("\n", "\n")
-    end
-
-    # Matches and consumes non-meaningful whitespace.
-    def whitespace_token
-      return false unless whitespace = @chunk[WHITESPACE, 1]
-      @spaced = last_value
-      @i += whitespace.length
-    end
-
-    # Multiple newlines get merged together.
-    # Use a trailing \ to escape newlines.
-    def newline_token(newlines)
-      token("\n", "\n") unless last_value == "\n"
-      true
-    end
-
-    # Tokens to explicitly escape newlines are removed once their job is done.
-    def suppress_newlines(newlines)
-      @tokens.pop if last_value == "\\"
-      true
-    end
-
-    # We treat all other single characters as a token. Eg.: ( ) , . !
-    # Multi-character operators are also literal tokens, so that Racc can assign
-    # the proper order of operations.
-    def literal_token
-      value = @chunk[OPERATOR, 1]
-      tag_parameters if value && value.match(CODE)
-      value ||= @chunk[0,1]
-      tag = value.match(ASSIGNMENT) ? :ASSIGN : value
-      if !@spaced.equal?(last_value) && CALLABLE.include?(last_tag)
-        tag = :CALL_START  if value == '('
-        tag = :INDEX_START if value == '['
-      end
-      token(tag, value)
-      @i += value.length
-    end
-
-    # Helpers ==========================================================
-
-    # Add a token to the results, taking note of the line number.
-    def token(tag, value)
-      @tokens << [tag, Value.new(value, @line)]
-    end
-
-    # Peek at the previous token's value.
-    def last_value
-      @tokens.last && @tokens.last[1]
-    end
-
-    # Peek at the previous token's tag.
-    def last_tag
-      @tokens.last && @tokens.last[0]
-    end
-
-    # A source of ambiguity in our grammar was parameter lists in function
-    # definitions (as opposed to argument lists in function calls). Tag
-    # parameter identifiers in order to avoid this. Also, parameter lists can
-    # make use of splats.
-    def tag_parameters
-      return if last_tag != ')'
-      i = 0
-      loop do
-        i -= 1
-        tok = @tokens[i]
-        return if !tok
-        case tok[0]
-        when :IDENTIFIER  then tok[0] = :PARAM
-        when ')'          then tok[0] = :PARAM_END
-        when '('          then return tok[0] = :PARAM_START
-        end
-      end
-    end
-
-    # Close up all remaining open blocks. IF the first token is an indent,
-    # axe it.
-    def close_indentation
-      outdent_token(@indent)
-    end
-
-  end
-end

lib/coffee_script/narwhal/coffee-script.js

@@ -1,96 +0,0 @@
-(function(){
-  var File, OS, Readline, checkForErrors, coffeePath, factories, loader, puts;
-  // The Narwhal-compatibility wrapper for CoffeeScript.
-  // Require external dependencies.
-  OS = require('os');
-  File = require('file');
-  Readline = require('readline');
-  // The path to the CoffeeScript Compiler.
-  coffeePath = File.path(module.path).dirname().dirname().dirname().dirname().join('bin', 'coffee');
-  // Our general-purpose error handler.
-  checkForErrors = function checkForErrors(coffeeProcess) {
-    if (coffeeProcess.wait() === 0) {
-      return true;
-    }
-    system.stderr.print(coffeeProcess.stderr.read());
-    throw new Error("CoffeeScript compile error");
-  };
-  // Alias print to "puts", for Node.js compatibility:
-  puts = print;
-  // Run a simple REPL, round-tripping to the CoffeeScript compiler for every
-  // command.
-  exports.run = function run(args) {
-    var __a, __b, i, path, result;
-    if (args.length) {
-      __a = args;
-      for (i = 0; i < __a.length; i++) {
-        path = __a[i];
-        exports.evalCS(File.read(path));
-        delete args[i];
-      }
-      return true;
-    }
-    __b = [];
-    while (true) {
-      __b.push((function() {
-        try {
-          system.stdout.write('coffee> ').flush();
-          result = exports.evalCS(Readline.readline(), ['--globals']);
-          if (result !== undefined) {
-            return print(result);
-          }
-        } catch (e) {
-          return print(e);
-        }
-      }).call(this));
-    }
-    return __b;
-  };
-  // Compile a given CoffeeScript file into JavaScript.
-  exports.compileFile = function compileFile(path) {
-    var coffee;
-    coffee = OS.popen([coffeePath, "--print", "--no-wrap", path]);
-    checkForErrors(coffee);
-    return coffee.stdout.read();
-  };
-  // Compile a string of CoffeeScript into JavaScript.
-  exports.compile = function compile(source, flags) {
-    var coffee;
-    coffee = OS.popen([coffeePath, "--eval", "--no-wrap"].concat(flags || []));
-    coffee.stdin.write(source).flush().close();
-    checkForErrors(coffee);
-    return coffee.stdout.read();
-  };
-  // Evaluating a string of CoffeeScript first compiles it externally.
-  exports.evalCS = function evalCS(source, flags) {
-    return eval(exports.compile(source, flags));
-  };
-  // Make a factory for the CoffeeScript environment.
-  exports.makeNarwhalFactory = function makeNarwhalFactory(path) {
-    var code, factoryText;
-    code = exports.compileFile(path);
-    factoryText = "function(require,exports,module,system,print){" + code + "/**/\n}";
-    if (system.engine === "rhino") {
-      return Packages.org.mozilla.javascript.Context.getCurrentContext().compileFunction(global, factoryText, path, 0, null);
-    } else {
-      // eval requires parentheses, but parentheses break compileFunction.
-      return eval("(" + factoryText + ")");
-    }
-  };
-  // The Narwhal loader for '.coffee' files.
-  factories = {
-  };
-  loader = {
-  };
-  // Reload the coffee-script environment from source.
-  loader.reload = function reload(topId, path) {
-    return factories[topId] = function() {
-      return exports.makeNarwhalFactory(path);
-    };
-  };
-  // Ensure that the coffee-script environment is loaded.
-  loader.load = function load(topId, path) {
-    return factories[topId] = factories[topId] || this.reload(topId, path);
-  };
-  require.loader.loaders.unshift([".coffee", loader]);
-})();

lib/coffee_script/nodes.js

@@ -1,443 +0,0 @@
-(function(){
-  var compact, dup, flatten;
-  var __hasProp = Object.prototype.hasOwnProperty;
-  // The abstract base class for all CoffeeScript nodes.
-  // All nodes are implement a "compile_node" method, which performs the
-  // code generation for that node. To compile a node, call the "compile"
-  // method, which wraps "compile_node" in some extra smarts, to know when the
-  // generated code should be wrapped up in a closure. An options hash is passed
-  // and cloned throughout, containing messages from higher in the AST,
-  // information about the current scope, and indentation level.
-  exports.Node = function Node() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.values = arguments;
-    __a = this.name = this.constructor.name;
-    return Node === this.constructor ? this : __a;
-  };
-  exports.Expressions = function Expressions() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return Expressions === this.constructor ? this : __a;
-  };
-  exports.LiteralNode = function LiteralNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return LiteralNode === this.constructor ? this : __a;
-  };
-  exports.ReturnNode = function ReturnNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ReturnNode === this.constructor ? this : __a;
-  };
-  exports.CommentNode = function CommentNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return CommentNode === this.constructor ? this : __a;
-  };
-  exports.CallNode = function CallNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return CallNode === this.constructor ? this : __a;
-  };
-  exports.ExtendsNode = function ExtendsNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ExtendsNode === this.constructor ? this : __a;
-  };
-  exports.ValueNode = function ValueNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ValueNode === this.constructor ? this : __a;
-  };
-  exports.AccessorNode = function AccessorNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return AccessorNode === this.constructor ? this : __a;
-  };
-  exports.IndexNode = function IndexNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return IndexNode === this.constructor ? this : __a;
-  };
-  exports.RangeNode = function RangeNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return RangeNode === this.constructor ? this : __a;
-  };
-  exports.SliceNode = function SliceNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return SliceNode === this.constructor ? this : __a;
-  };
-  exports.AssignNode = function AssignNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return AssignNode === this.constructor ? this : __a;
-  };
-  exports.OpNode = function OpNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return OpNode === this.constructor ? this : __a;
-  };
-  exports.CodeNode = function CodeNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return CodeNode === this.constructor ? this : __a;
-  };
-  exports.SplatNode = function SplatNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return SplatNode === this.constructor ? this : __a;
-  };
-  exports.ObjectNode = function ObjectNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ObjectNode === this.constructor ? this : __a;
-  };
-  exports.ArrayNode = function ArrayNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ArrayNode === this.constructor ? this : __a;
-  };
-  exports.PushNode = function PushNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return PushNode === this.constructor ? this : __a;
-  };
-  exports.ClosureNode = function ClosureNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ClosureNode === this.constructor ? this : __a;
-  };
-  exports.WhileNode = function WhileNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return WhileNode === this.constructor ? this : __a;
-  };
-  exports.ForNode = function ForNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ForNode === this.constructor ? this : __a;
-  };
-  exports.TryNode = function TryNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return TryNode === this.constructor ? this : __a;
-  };
-  exports.ThrowNode = function ThrowNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ThrowNode === this.constructor ? this : __a;
-  };
-  exports.ExistenceNode = function ExistenceNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ExistenceNode === this.constructor ? this : __a;
-  };
-  exports.ParentheticalNode = function ParentheticalNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return ParentheticalNode === this.constructor ? this : __a;
-  };
-  exports.IfNode = function IfNode() {
-    var __a;
-    var arguments = Array.prototype.slice.call(arguments, 0);
-    this.name = this.constructor.name;
-    __a = this.values = arguments;
-    return IfNode === this.constructor ? this : __a;
-  };
-  exports.Expressions.wrap = function wrap(values) {
-    return this.values = values;
-  };
-  // Some helper functions
-  // TODO -- shallow (1 deep) flatten..
-  // need recursive version..
-  flatten = function flatten(aggList, newList) {
-    var __a, __b, item;
-    __a = newList;
-    for (__b = 0; __b < __a.length; __b++) {
-      item = __a[__b];
-      aggList.push(item);
-    }
-    return aggList;
-  };
-  compact = function compact(input) {
-    var __a, __b, __c, compected, item;
-    compected = [];
-    __a = []; __b = input;
-    for (__c = 0; __c < __b.length; __c++) {
-      item = __b[__c];
-      __a.push((typeof item !== "undefined" && item !== null) ? compacted.push(item) : null);
-    }
-    return __a;
-  };
-  dup = function dup(input) {
-    var __a, __b, __c, key, output, val;
-    output = null;
-    if (input instanceof Array) {
-      output = [];
-      __a = input;
-      for (__b = 0; __b < __a.length; __b++) {
-        val = __a[__b];
-        output.push(val);
-      }
-    } else {
-      output = {
-      };
-      __c = input;
-      for (key in __c) {
-        val = __c[key];
-        if (__hasProp.call(__c, key)) {
-          output.key = val;
-        }
-      }
-      output;
-    }
-    return output;
-  };
-  exports.Node.prototype.TAB = '  ';
-  // Tag this node as a statement, meaning that it can't be used directly as
-  // the result of an expression.
-  exports.Node.prototype.mark_as_statement = function mark_as_statement() {
-    return this.is_statement = function is_statement() {
-      return true;
-    };
-  };
-  // Tag this node as a statement that cannot be transformed into an expression.
-  // (break, continue, etc.) It doesn't make sense to try to transform it.
-  exports.Node.prototype.mark_as_statement_only = function mark_as_statement_only() {
-    this.mark_as_statement();
-    return this.is_statement_only = function is_statement_only() {
-      return true;
-    };
-  };
-  // This node needs to know if it's being compiled as a top-level statement,
-  // in order to compile without special expression conversion.
-  exports.Node.prototype.mark_as_top_sensitive = function mark_as_top_sensitive() {
-    return this.is_top_sensitive = function is_top_sensitive() {
-      return true;
-    };
-  };
-  // Provide a quick implementation of a children method.
-  exports.Node.prototype.children = function children(attributes) {
-    var __a, __b, agg, compacted, item;
-    // TODO -- are these optimal impls of flatten and compact
-    // .. do better ones exist in a stdlib?
-    agg = [];
-    __a = attributes;
-    for (__b = 0; __b < __a.length; __b++) {
-      item = __a[__b];
-      agg = flatten(agg, item);
-    }
-    compacted = compact(agg);
-    return this.children = function children() {
-      return compacted;
-    };
-  };
-  exports.Node.prototype.write = function write(code) {
-    // hm..
-    // TODO -- should print to STDOUT in "VERBOSE" how to
-    // go about this.. ? jsonify 'this'?
-    // use node's puts ??
-    return code;
-  };
-  // This is extremely important -- we convert JS statements into expressions
-  // by wrapping them in a closure, only if it's possible, and we're not at
-  // the top level of a block (which would be unnecessary), and we haven't
-  // already been asked to return the result.
-  exports.Node.prototype.compile = function compile(o) {
-    var closure, opts, top;
-    // TODO -- need JS dup/clone
-    opts = (typeof !o !== "undefined" && !o !== null) ? {
-    } : o;
-    this.options = opts;
-    this.indent = opts.indent;
-    top = this.options.top;
-    !this.is_top_sentitive() ? (this.options.top = undefined) : null;
-    closure = this.is_statement() && !this.is_statement_only() && !top && typeof (this) === "CommentNode";
-    closure = closure && !this.do_i_contain(function(n) {
-      return n.is_statement_only();
-    });
-    return closure ? this.compile_closure(this.options) : compile_node(this.options);
-  };
-  // Statements converted into expressions share scope with their parent
-  // closure, to preserve JavaScript-style lexical scope.
-  exports.Node.prototype.compile_closure = function compile_closure(o) {
-    var opts;
-    opts = (typeof !o !== "undefined" && !o !== null) ? {
-    } : o;
-    this.indent = opts.indent;
-    opts.shared_scope = o.scope;
-    return exports.ClosureNode.wrap(this).compile(opts);
-  };
-  // Quick short method for the current indentation level, plus tabbing in.
-  exports.Node.prototype.idt = function idt(tLvl) {
-    var __a, __b, __c, __d, tabAmt, tabs, x;
-    tabs = (typeof tLvl !== "undefined" && tLvl !== null) ? tLvl : 0;
-    tabAmt = '';
-    __c = 0; __d = tabs;
-    for (__b=0, x=__c; (__c <= __d ? x < __d : x > __d); (__c <= __d ? x += 1 : x -= 1), __b++) {
-      tabAmt = tabAmt + this.TAB;
-    }
-    return this.indent + tabAmt;
-  };
-  //Does this node, or any of it's children, contain a node of a certain kind?
-  exports.Node.prototype.do_i_contain = function do_i_contain(block) {
-    var __a, __b, node;
-    __a = this.children;
-    for (__b = 0; __b < __a.length; __b++) {
-      node = __a[__b];
-      if (block(node)) {
-        return true;
-      }
-      if (node instanceof exports.Node && node.do_i_contain(block)) {
-        return true;
-      }
-    }
-    return false;
-  };
-  // Default implementations of the common node methods.
-  exports.Node.prototype.unwrap = function unwrap() {
-    return this;
-  };
-  exports.Node.prototype.children = [];
-  exports.Node.prototype.is_a_statement = function is_a_statement() {
-    return false;
-  };
-  exports.Node.prototype.is_a_statement_only = function is_a_statement_only() {
-    return false;
-  };
-  exports.Node.prototype.is_top_sensitive = function is_top_sensitive() {
-    return false;
-  };
-  // A collection of nodes, each one representing an expression.
-  // exports.Expressions: (nodes) ->
-  //   this.mark_as_statement()
-  //   this.expressions: []
-  //   this.children([this.expressions])
-  //   for n in nodes
-  //     this.expressions: flatten this.expressions, n
-  // exports.Expressions extends exports.Node
-  exports.Expressions.prototype.TRAILING_WHITESPACE = /\s+$/;
-  // Wrap up a node as an Expressions, unless it already is.
-  exports.Expressions.prototype.wrap = function wrap(nodes) {
-    if (nodes.length === 1 && nodes[0] instanceof exports.Expressions) {
-      return nodes[0];
-    }
-    return new Expressions(nodes);
-  };
-  // Tack an expression on to the end of this expression list.
-  exports.Expressions.prototype.push = function push(node) {
-    this.expressions.push(node);
-    return this;
-  };
-  // Tack an expression on to the beginning of this expression list.
-  exports.Expressions.prototype.unshift = function unshift(node) {
-    this.expressions.unshift(node);
-    return this;
-  };
-  // If this Expressions consists of a single node, pull it back out.
-  exports.Expressions.prototype.unwrap = function unwrap() {
-    return this.expressions.length === 1 ? this.expressions[0] : this;
-  };
-  // Is this an empty block of code?
-  exports.Expressions.prototype.is_empty = function is_empty() {
-    return this.expressions.length === 0;
-  };
-  // Is the node last in this block of expressions.
-  exports.Expressions.prototype.is_last = function is_last(node) {
-    var arr_length;
-    arr_length = this.expressions.length;
-    this.last_index = this.last_index || this.expressions[arr_length - 1] instanceof exports.CommentNode ? -2 : -1;
-    return node === this.expressions[arr_length - this.last_index];
-  };
-  exports.Expressions.prototype.compile = function compile(o) {
-    var opts;
-    opts = (typeof o !== "undefined" && o !== null) ? o : {
-    };
-    return opts.scope ? exports.Expressions.__superClass__.compile.call(this, dup(opts)) : this.compile_root(o);
-  };
-  // Compile each expression in the Expressions body.
-  exports.Expressions.prototype.compile_node = function compile_node(options) {
-    var __a, __b, __c, __d, __e, code, compiled, e, line, opts;
-    opts = (typeof options !== "undefined" && options !== null) ? options : {
-    };
-    compiled = [];
-    __a = this.expressions;
-    for (__b = 0; __b < __a.length; __b++) {
-      e = __a[__b];
-      compiled.push(this.compile_expression(e, dup(options)));
-    }
-    code = '';
-    __c = []; __d = compiled;
-    for (__e = 0; __e < __d.length; __e++) {
-      line = __d[__e];
-      __c.push((code = code + line + '\n'));
-    }
-    return __c;
-  };
-  // If this is the top-level Expressions, wrap everything in a safety closure.
-  exports.Expressions.prototype.compile_root = function compile_root(o) {
-    var code, indent, opts;
-    opts = (typeof o !== "undefined" && o !== null) ? o : {
-    };
-    indent = opts.no_wrap ? '' : this.TAB;
-    this.indent = indent;
-    opts.indent = indent;
-    opts.scope = new Scope(null, this, null);
-    code = opts.globals ? compile_node(opts) : compile_with_declarations(opts);
-    code.replace(this.TRAILING_WHITESPACE, '');
-    return this.write(opts.no_wrap ? code : "(function(){\n" + code + "\n})();");
-  };
-})();

lib/coffee_script/parse_error.rb

@@ -1,29 +0,0 @@
-module CoffeeScript
-
-  # Racc will raise this Exception whenever a syntax error occurs. The main
-  # benefit over the Racc::ParseError is that the CoffeeScript::ParseError is
-  # line-number aware.
-  class ParseError < Racc::ParseError
-
-    TOKEN_MAP = {
-      'INDENT'  => 'indent',
-      'OUTDENT' => 'outdent',
-      "\n"      => 'newline'
-    }
-
-    def initialize(token_id, value, stack=nil, message=nil)
-      @token_id, @value, @stack, @message = token_id, value, stack, message
-    end
-
-    def message
-      line      = @value.respond_to?(:line) ? @value.line : "END"
-      line_part = "line #{line}:"
-      id_part   = @token_id != @value.to_s ? " unexpected #{@token_id.to_s.downcase}" : ""
-      val_part  = @message || "for #{TOKEN_MAP[@value.to_s] || "'#{@value}'"}"
-      "#{line_part} syntax error, #{val_part}#{id_part}"
-    end
-    alias_method :inspect, :message
-
-  end
-
-end

lib/coffee_script/parser.js

@@ -1,477 +0,0 @@
-(function(){
-  var Parser, __a, __b, __c, __d, __e, __f, bnf, grammar, name, non_terminal, o, operators, option, parser, part, tokens, unwrap;
-  var __hasProp = Object.prototype.hasOwnProperty;
-  Parser = require('jison').Parser;
-  process.mixin(require('./nodes'));
-  // DSL ===================================================================
-  // Detect functions: [
-  unwrap = /function\s*\(\)\s*\{\s*return\s*([\s\S]*);\s*\}/;
-  // Quickie DSL for Jison access.
-  o = function o(pattern_string, func) {
-    var match;
-    if (func) {
-      func = (match = (func + "").match(unwrap)) ? match[1] : '(' + func + '())';
-      return [pattern_string, '$$ = ' + func + ';'];
-    } else {
-      return [pattern_string, '$$ = $1;'];
-    }
-  };
-  // Precedence ===========================================================
-  operators = [["left", '?'], ["right", 'NOT', '!', '!!', '~', '++', '--'], ["left", '*', '/', '%'], ["left", '+', '-'], ["left", '<<', '>>', '>>>'], ["left", '&', '|', '^'], ["left", '<=', '<', '>', '>='], ["right", '==', '!=', 'IS', 'ISNT'], ["left", '&&', '||', 'AND', 'OR'], ["right", '-=', '+=', '/=', '*=', '%='], ["right", 'DELETE', 'INSTANCEOF', 'TYPEOF'], ["left", '.'], ["right", 'INDENT'], ["left", 'OUTDENT'], ["right", 'WHEN', 'LEADING_WHEN', 'IN', 'OF', 'BY'], ["right", 'THROW', 'FOR', 'NEW', 'SUPER'], ["left", 'EXTENDS'], ["left", '||=', '&&=', '?='], ["right", 'ASSIGN', 'RETURN'], ["right", '->', '=>', 'UNLESS', 'IF', 'ELSE', 'WHILE']];
-  // Grammar ==============================================================
-  grammar = {
-    // All parsing will end in this rule, being the trunk of the AST.
-    Root: [o("", function() {
-        return new Expressions();
-      }), o("TERMINATOR", function() {
-        return new Expressions();
-      }), o("Expressions"), o("Block TERMINATOR")
-    ],
-    // Any list of expressions or method body, seperated by line breaks or semis.
-    Expressions: [o("Expression", function() {
-        return Expressions.wrap([$1]);
-      }), o("Expressions TERMINATOR Expression", function() {
-        return $1.push($3);
-      }), o("Expressions TERMINATOR")
-    ],
-    // All types of expressions in our language. The basic unit of CoffeeScript
-    // is the expression.
-    Expression: [o("Value"), o("Call"), o("Code"), o("Operation"), o("Assign"), o("If"), o("Try"), o("Throw"), o("Return"), o("While"), o("For"), o("Switch"), o("Extends"), o("Splat"), o("Existence"), o("Comment")],
-    // A block of expressions. Note that the Rewriter will convert some postfix
-    // forms into blocks for us, by altering the token stream.
-    Block: [o("INDENT Expressions OUTDENT", function() {
-        return $2;
-      }), o("INDENT OUTDENT", function() {
-        return new Expressions();
-      })
-    ],
-    // All hard-coded values. These can be printed straight to JavaScript.
-    Literal: [o("NUMBER", function() {
-        return new LiteralNode(yytext);
-      }), o("STRING", function() {
-        return new LiteralNode(yytext);
-      }), o("JS", function() {
-        return new LiteralNode(yytext);
-      }), o("REGEX", function() {
-        return new LiteralNode(yytext);
-      }), o("BREAK", function() {
-        return new LiteralNode(yytext);
-      }), o("CONTINUE", function() {
-        return new LiteralNode(yytext);
-      }), o("ARGUMENTS", function() {
-        return new LiteralNode(yytext);
-      }), o("TRUE", function() {
-        return new LiteralNode(true);
-      }), o("FALSE", function() {
-        return new LiteralNode(false);
-      }), o("YES", function() {
-        return new LiteralNode(true);
-      }), o("NO", function() {
-        return new LiteralNode(false);
-      }), o("ON", function() {
-        return new LiteralNode(true);
-      }), o("OFF", function() {
-        return new LiteralNode(false);
-      })
-    ],
-    // Assignment to a variable (or index).
-    Assign: [o("Value ASSIGN Expression", function() {
-        return new AssignNode($1, $3);
-      })
-    ],
-    // Assignment within an object literal (can be quoted).
-    AssignObj: [o("IDENTIFIER ASSIGN Expression", function() {
-        return new AssignNode(new ValueNode(yytext), $3, 'object');
-      }), o("STRING ASSIGN Expression", function() {
-        return new AssignNode(new ValueNode(new LiteralNode(yytext)), $3, 'object');
-      }), o("Comment")
-    ],
-    // A return statement.
-    Return: [o("RETURN Expression", function() {
-        return new ReturnNode($2);
-      }), o("RETURN", function() {
-        return new ReturnNode(new ValueNode(new LiteralNode('null')));
-      })
-    ],
-    // A comment.
-    Comment: [o("COMMENT", function() {
-        return new CommentNode(yytext);
-      })
-    ],
-    //
-    // # Arithmetic and logical operators
-    // # For Ruby's Operator precedence, see: [
-    // # https://www.cs.auckland.ac.nz/references/ruby/ProgrammingRuby/language.html
-    // Operation: [
-    //   o "! Expression",                           -> new OpNode($1, $2)
-    //   o "!! Expression",                          -> new OpNode($1, $2)
-    //   o "- Expression",                           -> new OpNode($1, $2)
-    //   o "+ Expression",                           -> new OpNode($1, $2)
-    //   o "NOT Expression",                         -> new OpNode($1, $2)
-    //   o "~ Expression",                           -> new OpNode($1, $2)
-    //   o "-- Expression",                          -> new OpNode($1, $2)
-    //   o "++ Expression",                          -> new OpNode($1, $2)
-    //   o "DELETE Expression",                      -> new OpNode($1, $2)
-    //   o "TYPEOF Expression",                      -> new OpNode($1, $2)
-    //   o "Expression --",                          -> new OpNode($2, $1, null, true)
-    //   o "Expression ++",                          -> new OpNode($2, $1, null, true)
-    //
-    //   o "Expression * Expression",                -> new OpNode($2, $1, $3)
-    //   o "Expression / Expression",                -> new OpNode($2, $1, $3)
-    //   o "Expression % Expression",                -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression + Expression",                -> new OpNode($2, $1, $3)
-    //   o "Expression - Expression",                -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression << Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression >> Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression >>> Expression",              -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression & Expression",                -> new OpNode($2, $1, $3)
-    //   o "Expression | Expression",                -> new OpNode($2, $1, $3)
-    //   o "Expression ^ Expression",                -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression <= Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression < Expression",                -> new OpNode($2, $1, $3)
-    //   o "Expression > Expression",                -> new OpNode($2, $1, $3)
-    //   o "Expression >= Expression",               -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression == Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression != Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression IS Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression ISNT Expression",             -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression && Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression || Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression AND Expression",              -> new OpNode($2, $1, $3)
-    //   o "Expression OR Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression ? Expression",                -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression -= Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression += Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression /= Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression *= Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression %= Expression",               -> new OpNode($2, $1, $3)
-    //   o "Expression ||= Expression",              -> new OpNode($2, $1, $3)
-    //   o "Expression &&= Expression",              -> new OpNode($2, $1, $3)
-    //   o "Expression ?= Expression",               -> new OpNode($2, $1, $3)
-    //
-    //   o "Expression INSTANCEOF Expression",       -> new OpNode($2, $1, $3)
-    //   o "Expression IN Expression",               -> new OpNode($2, $1, $3)
-    // ]
-    // The existence operator.
-    Existence: [o("Expression ?", function() {
-        return new ExistenceNode($1);
-      })
-    ],
-    // Function definition.
-    Code: [o("PARAM_START ParamList PARAM_END FuncGlyph Block", function() {
-        return new CodeNode($2, $5, $4);
-      }), o("FuncGlyph Block", function() {
-        return new CodeNode([], $2, $1);
-      })
-    ],
-    // The symbols to signify functions, and bound functions.
-    FuncGlyph: [o("->", function() {
-        return 'func';
-      }), o("=>", function() {
-        return 'boundfunc';
-      })
-    ],
-    // The parameters to a function definition.
-    ParamList: [o("Param", function() {
-        return [$1];
-      }), o("ParamList , Param", function() {
-        return $1.push($3);
-      })
-    ],
-    // A Parameter (or ParamSplat) in a function definition.
-    Param: [o("PARAM", function() {
-        return yytext;
-      }), o("PARAM . . .", function() {
-        return new SplatNode(yytext);
-      })
-    ],
-    // A regular splat.
-    Splat: [o("Expression . . .", function() {
-        return new SplatNode($1);
-      })
-    ],
-    // Expressions that can be treated as values.
-    Value: [o("IDENTIFIER", function() {
-        return new ValueNode(yytext);
-      }), o("Literal", function() {
-        return new ValueNode($1);
-      }), o("Array", function() {
-        return new ValueNode($1);
-      }), o("Object", function() {
-        return new ValueNode($1);
-      }), o("Parenthetical", function() {
-        return new ValueNode($1);
-      }), o("Range", function() {
-        return new ValueNode($1);
-      }),
-      // o "Value Accessor",                         -> $1.push($2)
-      o("Invocation Accessor", function() {
-        return new ValueNode($1, [$2]);
-      })
-    ]
-    // # Accessing into an object or array, through dot or index notation.
-    // Accessor: [
-    //   o "PROPERTY_ACCESS IDENTIFIER",             -> new AccessorNode($2)
-    //   o "PROTOTYPE_ACCESS IDENTIFIER",            -> new AccessorNode($2, 'prototype')
-    //   o "SOAK_ACCESS IDENTIFIER",                 -> new AccessorNode($2, 'soak')
-    //   o "Index"
-    //   o "Slice",                                  -> new SliceNode($1)
-    // ]
-    //
-    // # Indexing into an object or array.
-    // Index: [
-    //   o "INDEX_START Expression INDEX_END",       -> new IndexNode($2)
-    // ]
-    //
-    // # An object literal.
-    // Object: [
-    //   o "{ AssignList }",                         -> new ObjectNode($2)
-    // ]
-    //
-    // # Assignment within an object literal (comma or newline separated).
-    // AssignList: [
-    //   o "",                                       -> []
-    //   o "AssignObj",                              -> [$1]
-    //   o "AssignList , AssignObj",                 -> $1.push $3
-    //   o "AssignList TERMINATOR AssignObj",        -> $1.push $3
-    //   o "AssignList , TERMINATOR AssignObj",      -> $1.push $4
-    //   o "INDENT AssignList OUTDENT",              -> $2
-    // ]
-    //
-    // # All flavors of function call (instantiation, super, and regular).
-    // Call: [
-    //   o "Invocation",                             -> $1
-    //   o "NEW Invocation",                         -> $2.new_instance()
-    //   o "Super",                                  -> $1
-    // ]
-    //
-    // # Extending an object's prototype.
-    // Extends: [
-    //   o "Value EXTENDS Value",                    -> new ExtendsNode($1, $3)
-    // ]
-    //
-    // # A generic function invocation.
-    // Invocation: [
-    //   o "Value Arguments",                        -> new CallNode($1, $2)
-    //   o "Invocation Arguments",                   -> new CallNode($1, $2)
-    // ]
-    //
-    // # The list of arguments to a function invocation.
-    // Arguments: [
-    //   o "CALL_START ArgList CALL_END",            -> $2
-    // ]
-    //
-    // # Calling super.
-    // Super: [
-    //   o "SUPER CALL_START ArgList CALL_END",      -> new CallNode('super', $3)
-    // ]
-    //
-    // # The range literal.
-    // Range: [
-    //   o "[ Expression . . Expression ]",          -> new RangeNode($2, $5)
-    //   o "[ Expression . . . Expression ]",        -> new RangeNode($2, $6, true)
-    // ]
-    //
-    // # The slice literal.
-    // Slice: [
-    //   o "INDEX_START Expression . . Expression INDEX_END", -> new RangeNode($2, $5)
-    //   o "INDEX_START Expression . . . Expression INDEX_END", -> new RangeNode($2, $6, true)
-    // ]
-    //
-    // # The array literal.
-    // Array: [
-    //   o "[ ArgList ]",                            -> new ArrayNode($2)
-    // ]
-    //
-    // # A list of arguments to a method call, or as the contents of an array.
-    // ArgList: [
-    //   o "",                                       -> []
-    //   o "Expression",                             -> val
-    //   o "INDENT Expression",                      -> [$2]
-    //   o "ArgList , Expression",                   -> $1.push $3
-    //   o "ArgList TERMINATOR Expression",          -> $1.push $3
-    //   o "ArgList , TERMINATOR Expression",        -> $1.push $4
-    //   o "ArgList , INDENT Expression",            -> $1.push $4
-    //   o "ArgList OUTDENT",                        -> $1
-    // ]
-    //
-    // # Just simple, comma-separated, required arguments (no fancy syntax).
-    // SimpleArgs: [
-    //   o "Expression",                             -> $1
-    //   o "SimpleArgs , Expression",                ->
-    //     ([$1].push($3)).reduce (a, b) -> a.concat(b)
-    // ]
-    //
-    // # Try/catch/finally exception handling blocks.
-    // Try: [
-    //   o "TRY Block Catch",                        -> new TryNode($2, $3[0], $3[1])
-    //   o "TRY Block FINALLY Block",                -> new TryNode($2, nil, nil, $4)
-    //   o "TRY Block Catch FINALLY Block",          -> new TryNode($2, $3[0], $3[1], $5)
-    // ]
-    //
-    // # A catch clause.
-    // Catch: [
-    //   o "CATCH IDENTIFIER Block",                 -> [$2, $3]
-    // ]
-    //
-    // # Throw an exception.
-    // Throw: [
-    //   o "THROW Expression",                       -> new ThrowNode($2)
-    // ]
-    //
-    // # Parenthetical expressions.
-    // Parenthetical: [
-    //   o "( Expression )",                         -> new ParentheticalNode($2)
-    // ]
-    //
-    // # The while loop. (there is no do..while).
-    // While: [
-    //   o "WHILE Expression Block",                 -> new WhileNode($2, $3)
-    //   o "WHILE Expression",                       -> new WhileNode($2, nil)
-    //   o "Expression WHILE Expression",            -> new WhileNode($3, Expressions.wrap($1))
-    // ]
-    //
-    // # Array comprehensions, including guard and current index.
-    // # Looks a little confusing, check nodes.rb for the arguments to ForNode.
-    // For: [
-    //   o "Expression FOR ForVariables ForSource",  -> new ForNode($1, $4, $3[0], $3[1])
-    //   o "FOR ForVariables ForSource Block",       -> new ForNode($4, $3, $2[0], $2[1])
-    // ]
-    //
-    // # An array comprehension has variables for the current element and index.
-    // ForVariables: [
-    //   o "IDENTIFIER",                             -> [$1]
-    //   o "IDENTIFIER , IDENTIFIER",                -> [$1, $3]
-    // ]
-    //
-    // # The source of the array comprehension can optionally be filtered.
-    // ForSource: [
-    //   o "IN Expression",                          -> {source:   $2}
-    //   o "OF Expression",                          -> {source:   $2, object: true}
-    //   o "ForSource WHEN Expression",              -> $1.filter: $3; $1
-    //   o "ForSource BY Expression",                -> $1.step:   $3; $1
-    // ]
-    //
-    // # Switch/When blocks.
-    // Switch: [
-    //   o "SWITCH Expression INDENT Whens OUTDENT", -> $4.rewrite_condition($2)
-    //   o "SWITCH Expression INDENT Whens ELSE Block OUTDENT", -> $4.rewrite_condition($2).add_else($6)
-    // ]
-    //
-    // # The inner list of whens.
-    // Whens: [
-    //   o "When",                                   -> $1
-    //   o "Whens When",                             -> $1.push $2
-    // ]
-    //
-    // # An individual when.
-    // When: [
-    //   o "LEADING_WHEN SimpleArgs Block",          -> new IfNode($2, $3, nil, {statement: true})
-    //   o "LEADING_WHEN SimpleArgs Block TERMINATOR", -> new IfNode($2, $3, nil, {statement: true})
-    //   o "Comment TERMINATOR When",                -> $3.add_comment($1)
-    // ]
-    //
-    // # The most basic form of "if".
-    // IfBlock: [
-    //   o "IF Expression Block",                    -> new IfNode($2, $3)
-    // ]
-    //
-    // # An elsif portion of an if-else block.
-    // ElsIf: [
-    //   o "ELSE IfBlock",                           -> $2.force_statement()
-    // ]
-    //
-    // # Multiple elsifs can be chained together.
-    // ElsIfs: [
-    //   o "ElsIf",                                  -> $1
-    //   o "ElsIfs ElsIf",                           -> $1.add_else($2)
-    // ]
-    //
-    // # Terminating else bodies are strictly optional.
-    // ElseBody: [
-    //   o "",                                       -> null
-    //   o "ELSE Block",                             -> $2
-    // ]
-    //
-    // # All the alternatives for ending an if-else block.
-    // IfEnd: [
-    //   o "ElseBody",                               -> $1
-    //   o "ElsIfs ElseBody",                        -> $1.add_else($2)
-    // ]
-    //
-    // # The full complement of if blocks, including postfix one-liner ifs and unlesses.
-    // If: [
-    //   o "IfBlock IfEnd",                          -> $1.add_else($2)
-    //   o "Expression IF Expression",               -> new IfNode($3, Expressions.wrap($1), nil, {statement: true})
-    //   o "Expression UNLESS Expression",           -> new IfNode($3, Expressions.wrap($1), nil, {statement: true, invert: true})
-    // ]
-  };
-  // Helpers ==============================================================
-  // Make the Jison parser.
-  bnf = {
-  };
-  tokens = [];
-  __a = grammar;
-  for (name in __a) {
-    non_terminal = __a[name];
-    if (__hasProp.call(__a, name)) {
-      bnf[name] = (function() {
-        __b = []; __c = non_terminal;
-        for (__d = 0; __d < __c.length; __d++) {
-          option = __c[__d];
-          __b.push((function() {
-            __e = option[0].split(" ");
-            for (__f = 0; __f < __e.length; __f++) {
-              part = __e[__f];
-              !grammar[part] ? tokens.push(part) : null;
-            }
-            name === "Root" ? (option[1] = "return " + option[1]) : null;
-            return option;
-          }).call(this));
-        }
-        return __b;
-      }).call(this);
-    }
-  }
-  tokens = tokens.join(" ");
-  parser = new Parser({
-    tokens: tokens,
-    bnf: bnf,
-    operators: operators,
-    startSymbol: 'Root'
-  }, {
-    debug: false
-  });
-  // Thin wrapper around the real lexer
-  parser.lexer = {
-    lex: function lex() {
-      var token;
-      token = this.tokens[this.pos] || [""];
-      this.pos += 1;
-      this.yylineno = token[2];
-      this.yytext = token[1];
-      return token[0];
-    },
-    setInput: function setInput(tokens) {
-      this.tokens = tokens;
-      return this.pos = 0;
-    },
-    upcomingInput: function upcomingInput() {
-      return "";
-    },
-    showPosition: function showPosition() {
-      return this.pos;
-    }
-  };
-  exports.Parser = function Parser() {  };
-  exports.Parser.prototype.parse = function parse(tokens) {
-    return parser.parse(tokens);
-  };
-})();

lib/coffee_script/repl.js

@@ -1,33 +0,0 @@
-(function(){
-  var coffee, prompt, quit, readline, run;
-  // A CoffeeScript port/version of the Node.js REPL.
-  // Required modules.
-  coffee = require('./coffee-script');
-  process.mixin(require('sys'));
-  // Shortcut variables.
-  prompt = 'coffee> ';
-  quit = function quit() {
-    return process.stdio.close();
-  };
-  // The main REPL function. Called everytime a line of code is entered.
-  readline = function readline(code) {
-    return coffee.compile(code, run);
-  };
-  // Attempt to evaluate the command. If there's an exception, print it.
-  run = function run(js) {
-    var val;
-    try {
-      val = eval(js);
-      if (val !== undefined) {
-        p(val);
-      }
-    } catch (err) {
-      puts(err.stack || err.toString());
-    }
-    return print(prompt);
-  };
-  // Start up the REPL.
-  process.stdio.open();
-  process.stdio.addListener('data', readline);
-  print(prompt);
-})();

lib/coffee_script/rewriter.js

@@ -1,377 +0,0 @@
-(function(){
-  var BALANCED_PAIRS, EXPRESSION_CLOSE, EXPRESSION_START, EXPRESSION_TAIL, IMPLICIT_CALL, IMPLICIT_END, IMPLICIT_FUNC, INVERSES, SINGLE_CLOSERS, SINGLE_LINERS, __a, __b, __c, __d, __e, __f, __g, __h, pair, re;
-  var __hasProp = Object.prototype.hasOwnProperty;
-  // In order to keep the grammar simple, the stream of tokens that the Lexer
-  // emits is rewritten by the Rewriter, smoothing out ambiguities, mis-nested
-  // indentation, and single-line flavors of expressions.
-  exports.Rewriter = (re = function re() {  });
-  // Tokens that must be balanced.
-  BALANCED_PAIRS = [['(', ')'], ['[', ']'], ['{', '}'], ['INDENT', 'OUTDENT'], ['PARAM_START', 'PARAM_END'], ['CALL_START', 'CALL_END'], ['INDEX_START', 'INDEX_END']];
-  // Tokens that signal the start of a balanced pair.
-  EXPRESSION_START = (function() {
-    __a = []; __b = BALANCED_PAIRS;
-    for (__c = 0; __c < __b.length; __c++) {
-      pair = __b[__c];
-      __a.push(pair[0]);
-    }
-    return __a;
-  }).call(this);
-  // Tokens that signal the end of a balanced pair.
-  EXPRESSION_TAIL = (function() {
-    __d = []; __e = BALANCED_PAIRS;
-    for (__f = 0; __f < __e.length; __f++) {
-      pair = __e[__f];
-      __d.push(pair[1]);
-    }
-    return __d;
-  }).call(this);
-  // Tokens that indicate the close of a clause of an expression.
-  EXPRESSION_CLOSE = ['CATCH', 'WHEN', 'ELSE', 'FINALLY'].concat(EXPRESSION_TAIL);
-  // Tokens pairs that, in immediate succession, indicate an implicit call.
-  IMPLICIT_FUNC = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END'];
-  IMPLICIT_END = ['IF', 'UNLESS', 'FOR', 'WHILE', 'TERMINATOR', 'OUTDENT'];
-  IMPLICIT_CALL = ['IDENTIFIER', 'NUMBER', 'STRING', 'JS', 'REGEX', 'NEW', 'PARAM_START', 'TRY', 'DELETE', 'TYPEOF', 'SWITCH', 'ARGUMENTS', 'TRUE', 'FALSE', 'YES', 'NO', 'ON', 'OFF', '!', '!!', 'NOT', '->', '=>', '[', '(', '{'];
-  // The inverse mappings of token pairs we're trying to fix up.
-  INVERSES = {
-  };
-  __g = BALANCED_PAIRS;
-  for (__h = 0; __h < __g.length; __h++) {
-    pair = __g[__h];
-    INVERSES[pair[0]] = pair[1];
-    INVERSES[pair[1]] = pair[0];
-  }
-  // Single-line flavors of block expressions that have unclosed endings.
-  // The grammar can't disambiguate them, so we insert the implicit indentation.
-  SINGLE_LINERS = ['ELSE', "->", "=>", 'TRY', 'FINALLY', 'THEN'];
-  SINGLE_CLOSERS = ['TERMINATOR', 'CATCH', 'FINALLY', 'ELSE', 'OUTDENT', 'LEADING_WHEN', 'PARAM_START'];
-  // Rewrite the token stream in multiple passes, one logical filter at
-  // a time. This could certainly be changed into a single pass through the
-  // stream, with a big ol' efficient switch, but it's much nicer like this.
-  re.prototype.rewrite = function rewrite(tokens) {
-    this.tokens = tokens;
-    this.adjust_comments();
-    this.remove_leading_newlines();
-    this.remove_mid_expression_newlines();
-    this.move_commas_outside_outdents();
-    this.close_open_calls_and_indexes();
-    this.add_implicit_parentheses();
-    this.add_implicit_indentation();
-    this.ensure_balance(BALANCED_PAIRS);
-    this.rewrite_closing_parens();
-    return this.tokens;
-  };
-  // Rewrite the token stream, looking one token ahead and behind.
-  // Allow the return value of the block to tell us how many tokens to move
-  // forwards (or backwards) in the stream, to make sure we don't miss anything
-  // as the stream changes length under our feet.
-  re.prototype.scan_tokens = function scan_tokens(block) {
-    var i, move;
-    i = 0;
-    while (true) {
-      if (!(this.tokens[i])) {
-        break;
-      }
-      move = block(this.tokens[i - 1], this.tokens[i], this.tokens[i + 1], i);
-      i += move;
-    }
-    return true;
-  };
-  // Massage newlines and indentations so that comments don't have to be
-  // correctly indented, or appear on their own line.
-  re.prototype.adjust_comments = function adjust_comments() {
-    return this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        var after, before;
-        if (!(token[0] === 'COMMENT')) {
-          return 1;
-        }
-        before = this.tokens[i - 2];
-        after = this.tokens[i + 2];
-        if (before && after && ((before[0] === 'INDENT' && after[0] === 'OUTDENT') || (before[0] === 'OUTDENT' && after[0] === 'INDENT')) && before[1] === after[1]) {
-          this.tokens.splice(i + 2, 1);
-          this.tokens.splice(i - 2, 1);
-          return 0;
-        } else if (prev[0] === 'TERMINATOR' && after[0] === 'INDENT') {
-          this.tokens.splice(i + 2, 1);
-          this.tokens[i - 1] = after;
-          return 1;
-        } else if (prev[0] !== 'TERMINATOR' && prev[0] !== 'INDENT' && prev[0] !== 'OUTDENT') {
-          this.tokens.splice(i, 0, ['TERMINATOR', "\n", prev[2]]);
-          return 2;
-        } else {
-          return 1;
-        }
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-  };
-  // Leading newlines would introduce an ambiguity in the grammar, so we
-  // dispatch them here.
-  re.prototype.remove_leading_newlines = function remove_leading_newlines() {
-    if (this.tokens[0][0] === 'TERMINATOR') {
-      return this.tokens.shift();
-    }
-  };
-  // Some blocks occur in the middle of expressions -- when we're expecting
-  // this, remove their trailing newlines.
-  re.prototype.remove_mid_expression_newlines = function remove_mid_expression_newlines() {
-    return this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        if (!(post && EXPRESSION_CLOSE.indexOf(post[0]) >= 0 && token[0] === 'TERMINATOR')) {
-          return 1;
-        }
-        this.tokens.splice(i, 1);
-        return 0;
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-  };
-  // Make sure that we don't accidentally break trailing commas, which need
-  // to go on the outside of expression closers.
-  re.prototype.move_commas_outside_outdents = function move_commas_outside_outdents() {
-    return this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        if (token[0] === 'OUTDENT' && prev[0] === ',') {
-          this.tokens.splice(i, 1, token);
-        }
-        return 1;
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-  };
-  // We've tagged the opening parenthesis of a method call, and the opening
-  // bracket of an indexing operation. Match them with their close.
-  re.prototype.close_open_calls_and_indexes = function close_open_calls_and_indexes() {
-    var brackets, parens;
-    parens = [0];
-    brackets = [0];
-    return this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        if (token[0] === 'CALL_START') {
-          parens.push(0);
-        } else if (token[0] === 'INDEX_START') {
-          brackets.push(0);
-        } else if (token[0] === '(') {
-          parens[parens.length - 1] += 1;
-        } else if (token[0] === '[') {
-          brackets[brackets.length - 1] += 1;
-        } else if (token[0] === ')') {
-          if (parens[parens.length - 1] === 0) {
-            parens.pop();
-            token[0] = 'CALL_END';
-          } else {
-            parens[parens.length - 1] -= 1;
-          }
-        } else if (token[0] === ']') {
-          if (brackets[brackets.length - 1] === 0) {
-            brackets.pop();
-            token[0] = 'INDEX_END';
-          } else {
-            brackets[brackets.length - 1] -= 1;
-          }
-        }
-        return 1;
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-  };
-  // Methods may be optionally called without parentheses, for simple cases.
-  // Insert the implicit parentheses here, so that the parser doesn't have to
-  // deal with them.
-  re.prototype.add_implicit_parentheses = function add_implicit_parentheses() {
-    var stack;
-    stack = [0];
-    return this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        var __i, __j, __k, __l, idx, last, size, tmp;
-        if (token[0] === 'INDENT') {
-          stack.push(0);
-        }
-        if (token[0] === 'OUTDENT') {
-          last = stack.pop();
-          stack[stack.length - 1] += last;
-        }
-        if (stack[stack.length - 1] > 0 && (IMPLICIT_END.indexOf(token[0]) >= 0 || (typeof !post !== "undefined" && !post !== null))) {
-          idx = token[0] === 'OUTDENT' ? i + 1 : i;
-          __k = 0; __l = stack[stack.length - 1];
-          for (__j=0, tmp=__k; (__k <= __l ? tmp < __l : tmp > __l); (__k <= __l ? tmp += 1 : tmp -= 1), __j++) {
-            this.tokens.splice(idx, 0, ['CALL_END', ')']);
-          }
-          size = stack[stack.length - 1] + 1;
-          stack[stack.length - 1] = 0;
-          return size;
-        }
-        if (!(prev && IMPLICIT_FUNC.indexOf(prev[0]) >= 0 && IMPLICIT_CALL.indexOf(token[0]) >= 0)) {
-          return 1;
-        }
-        this.tokens.splice(i, 0, ['CALL_START', '(']);
-        stack[stack.length - 1] += 1;
-        return 2;
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-  };
-  // Because our grammar is LALR(1), it can't handle some single-line
-  // expressions that lack ending delimiters. Use the lexer to add the implicit
-  // blocks, so it doesn't need to.
-  // ')' can close a single-line block, but we need to make sure it's balanced.
-  re.prototype.add_implicit_indentation = function add_implicit_indentation() {
-    return this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        var idx, insertion, parens, starter, tok;
-        if (!(SINGLE_LINERS.indexOf(token[0]) >= 0 && post[0] !== 'INDENT' && !(token[0] === 'ELSE' && post[0] === 'IF'))) {
-          return 1;
-        }
-        starter = token[0];
-        this.tokens.splice(i + 1, 0, ['INDENT', 2]);
-        idx = i + 1;
-        parens = 0;
-        while (true) {
-          idx += 1;
-          tok = this.tokens[idx];
-          if ((!tok || SINGLE_CLOSERS.indexOf(tok[0]) >= 0 || (tok[0] === ')' && parens === 0)) && !(starter === 'ELSE' && tok[0] === 'ELSE')) {
-            insertion = this.tokens[idx - 1][0] === "," ? idx - 1 : idx;
-            this.tokens.splice(insertion, 0, ['OUTDENT', 2]);
-            break;
-          }
-          if (tok[0] === '(') {
-            parens += 1;
-          }
-          if (tok[0] === ')') {
-            parens -= 1;
-          }
-        }
-        if (!(token[0] === 'THEN')) {
-          return 1;
-        }
-        this.tokens.splice(i, 1);
-        return 0;
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-  };
-  // Ensure that all listed pairs of tokens are correctly balanced throughout
-  // the course of the token stream.
-  re.prototype.ensure_balance = function ensure_balance(pairs) {
-    var __i, __j, key, levels, unclosed, value;
-    levels = {
-    };
-    this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        var __i, __j, __k, close, open;
-        __i = pairs;
-        for (__j = 0; __j < __i.length; __j++) {
-          pair = __i[__j];
-          __k = pair;
-          open = __k[0];
-          close = __k[1];
-          levels[open] = levels[open] || 0;
-          if (token[0] === open) {
-            levels[open] += 1;
-          }
-          if (token[0] === close) {
-            levels[open] -= 1;
-          }
-          if (levels[open] < 0) {
-            throw "too many " + token[1];
-          }
-        }
-        return 1;
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-    unclosed = (function() {
-      __i = []; __j = levels;
-      for (key in __j) {
-        value = __j[key];
-        if (__hasProp.call(__j, key)) {
-          if (value > 0) {
-            __i.push(key);
-          }
-        }
-      }
-      return __i;
-    }).call(this);
-    if (unclosed.length) {
-      throw "unclosed " + unclosed[0];
-    }
-  };
-  // We'd like to support syntax like this:
-  //    el.click((event) ->
-  //      el.hide())
-  // In order to accomplish this, move outdents that follow closing parens
-  // inwards, safely. The steps to accomplish this are:
-  //
-  // 1. Check that all paired tokens are balanced and in order.
-  // 2. Rewrite the stream with a stack: if you see an '(' or INDENT, add it
-  //    to the stack. If you see an ')' or OUTDENT, pop the stack and replace
-  //    it with the inverse of what we've just popped.
-  // 3. Keep track of "debt" for tokens that we fake, to make sure we end
-  //    up balanced in the end.
-  re.prototype.rewrite_closing_parens = function rewrite_closing_parens() {
-    var __i, debt, key, stack, val;
-    stack = [];
-    debt = {
-    };
-    __i = INVERSES;
-    for (key in __i) {
-      val = __i[key];
-      if (__hasProp.call(__i, key)) {
-        ((debt[key] = 0));
-      }
-    }
-    return this.scan_tokens((function(__this) {
-      var __func = function(prev, token, post, i) {
-        var inv, match, mtag, tag;
-        tag = token[0];
-        inv = INVERSES[token[0]];
-        // Push openers onto the stack.
-        if (EXPRESSION_START.indexOf(tag) >= 0) {
-          stack.push(token);
-          return 1;
-          // The end of an expression, check stack and debt for a pair.
-        } else if (EXPRESSION_TAIL.indexOf(tag) >= 0) {
-          // If the tag is already in our debt, swallow it.
-          if (debt[inv] > 0) {
-            debt[inv] -= 1;
-            this.tokens.splice(i, 1);
-            return 0;
-          } else {
-            // Pop the stack of open delimiters.
-            match = stack.pop();
-            mtag = match[0];
-            // Continue onwards if it's the expected tag.
-            if (tag === INVERSES[mtag]) {
-              return 1;
-            } else {
-              // Unexpected close, insert correct close, adding to the debt.
-              debt[mtag] += 1;
-              val = mtag === 'INDENT' ? match[1] : INVERSES[mtag];
-              this.tokens.splice(i, 0, [INVERSES[mtag], val]);
-              return 1;
-            }
-          }
-        } else {
-          return 1;
-        }
-      };
-      return (function() {
-        return __func.apply(__this, arguments);
-      });
-    })(this));
-  };
-})();

lib/coffee_script/rewriter.rb

@@ -1,289 +0,0 @@
-module CoffeeScript
-
-  # In order to keep the grammar simple, the stream of tokens that the Lexer
-  # emits is rewritten by the Rewriter, smoothing out ambiguities, mis-nested
-  # indentation, and single-line flavors of expressions.
-  class Rewriter
-
-    # Tokens that must be balanced.
-    BALANCED_PAIRS = [['(', ')'], ['[', ']'], ['{', '}'], [:INDENT, :OUTDENT],
-      [:PARAM_START, :PARAM_END], [:CALL_START, :CALL_END], [:INDEX_START, :INDEX_END]]
-
-    # Tokens that signal the start of a balanced pair.
-    EXPRESSION_START = BALANCED_PAIRS.map {|pair| pair.first }
-
-    # Tokens that signal the end of a balanced pair.
-    EXPRESSION_TAIL  = BALANCED_PAIRS.map {|pair| pair.last }
-
-    # Tokens that indicate the close of a clause of an expression.
-    EXPRESSION_CLOSE = [:CATCH, :WHEN, :ELSE, :FINALLY] + EXPRESSION_TAIL
-
-    # Tokens pairs that, in immediate succession, indicate an implicit call.
-    IMPLICIT_FUNC = [:IDENTIFIER, :SUPER, ')', :CALL_END, ']', :INDEX_END]
-    IMPLICIT_END  = [:IF, :UNLESS, :FOR, :WHILE, "\n", :OUTDENT]
-    IMPLICIT_CALL = [:IDENTIFIER, :NUMBER, :STRING, :JS, :REGEX, :NEW, :PARAM_START,
-                     :TRY, :DELETE, :TYPEOF, :SWITCH,
-                     :TRUE, :FALSE, :YES, :NO, :ON, :OFF, '!', '!!', :NOT,
-                     '@', '->', '=>', '[', '(', '{']
-
-    # The inverse mappings of token pairs we're trying to fix up.
-    INVERSES = BALANCED_PAIRS.inject({}) do |memo, pair|
-      memo[pair.first] = pair.last
-      memo[pair.last]  = pair.first
-      memo
-    end
-
-    # Single-line flavors of block expressions that have unclosed endings.
-    # The grammar can't disambiguate them, so we insert the implicit indentation.
-    SINGLE_LINERS  = [:ELSE, "->", "=>", :TRY, :FINALLY, :THEN]
-    SINGLE_CLOSERS = ["\n", :CATCH, :FINALLY, :ELSE, :OUTDENT, :LEADING_WHEN, :PARAM_START]
-
-    # Rewrite the token stream in multiple passes, one logical filter at
-    # a time. This could certainly be changed into a single pass through the
-    # stream, with a big ol' efficient switch, but it's much nicer like this.
-    def rewrite(tokens)
-      @tokens = tokens
-      adjust_comments
-      remove_leading_newlines
-      remove_mid_expression_newlines
-      move_commas_outside_outdents
-      close_open_calls_and_indexes
-      add_implicit_parentheses
-      add_implicit_indentation
-      ensure_balance(*BALANCED_PAIRS)
-      rewrite_closing_parens
-      @tokens
-    end
-
-    # Rewrite the token stream, looking one token ahead and behind.
-    # Allow the return value of the block to tell us how many tokens to move
-    # forwards (or backwards) in the stream, to make sure we don't miss anything
-    # as the stream changes length under our feet.
-    def scan_tokens
-      i = 0
-      loop do
-        break unless @tokens[i]
-        move = yield(@tokens[i - 1], @tokens[i], @tokens[i + 1], i)
-        i += move
-      end
-    end
-
-    # Massage newlines and indentations so that comments don't have to be
-    # correctly indented, or appear on their own line.
-    def adjust_comments
-      scan_tokens do |prev, token, post, i|
-        next 1 unless token[0] == :COMMENT
-        before, after = @tokens[i - 2], @tokens[i + 2]
-        if before && after &&
-            ((before[0] == :INDENT && after[0] == :OUTDENT) ||
-            (before[0] == :OUTDENT && after[0] == :INDENT)) &&
-            before[1] == after[1]
-          @tokens.delete_at(i + 2)
-          @tokens.delete_at(i - 2)
-          next 0
-        elsif prev[0] == "\n" && [:INDENT].include?(after[0])
-          @tokens.delete_at(i + 2)
-          @tokens[i - 1] = after
-          next 1
-        elsif !["\n", :INDENT, :OUTDENT].include?(prev[0])
-          @tokens.insert(i, ["\n", Value.new("\n", token[1].line)])
-          next 2
-        else
-          next 1
-        end
-      end
-    end
-
-    # Leading newlines would introduce an ambiguity in the grammar, so we
-    # dispatch them here.
-    def remove_leading_newlines
-      @tokens.shift if @tokens[0][0] == "\n"
-    end
-
-    # Some blocks occur in the middle of expressions -- when we're expecting
-    # this, remove their trailing newlines.
-    def remove_mid_expression_newlines
-      scan_tokens do |prev, token, post, i|
-        next 1 unless post && EXPRESSION_CLOSE.include?(post[0]) && token[0] == "\n"
-        @tokens.delete_at(i)
-        next 0
-      end
-    end
-
-    # Make sure that we don't accidentally break trailing commas, which need
-    # to go on the outside of expression closers.
-    def move_commas_outside_outdents
-      scan_tokens do |prev, token, post, i|
-        if token[0] == :OUTDENT && prev[0] == ','
-          @tokens.delete_at(i)
-          @tokens.insert(i - 1, token)
-        end
-        next 1
-      end
-    end
-
-    # We've tagged the opening parenthesis of a method call, and the opening
-    # bracket of an indexing operation. Match them with their close.
-    def close_open_calls_and_indexes
-      parens, brackets = [0], [0]
-      scan_tokens do |prev, token, post, i|
-        case token[0]
-        when :CALL_START  then parens.push(0)
-        when :INDEX_START then brackets.push(0)
-        when '('          then parens[-1] += 1
-        when '['          then brackets[-1] += 1
-        when ')'
-          if parens.last == 0
-            parens.pop
-            token[0] = :CALL_END
-          else
-            parens[-1] -= 1
-          end
-        when ']'
-          if brackets.last == 0
-            brackets.pop
-            token[0] = :INDEX_END
-          else
-            brackets[-1] -= 1
-          end
-        end
-        next 1
-      end
-    end
-
-    # Methods may be optionally called without parentheses, for simple cases.
-    # Insert the implicit parentheses here, so that the parser doesn't have to
-    # deal with them.
-    def add_implicit_parentheses
-      stack = [0]
-      scan_tokens do |prev, token, post, i|
-        stack.push(0) if token[0] == :INDENT
-        if token[0] == :OUTDENT
-          last = stack.pop
-          stack[-1] += last
-        end
-        if stack.last > 0 && (IMPLICIT_END.include?(token[0]) || post.nil?)
-          idx = token[0] == :OUTDENT ? i + 1 : i
-          stack.last.times { @tokens.insert(idx, [:CALL_END, Value.new(')', token[1].line)]) }
-          size, stack[-1] = stack[-1] + 1, 0
-          next size
-        end
-        next 1 unless IMPLICIT_FUNC.include?(prev[0]) && IMPLICIT_CALL.include?(token[0])
-        @tokens.insert(i, [:CALL_START, Value.new('(', token[1].line)])
-        stack[-1] += 1
-        next 2
-      end
-    end
-
-    # Because our grammar is LALR(1), it can't handle some single-line
-    # expressions that lack ending delimiters. Use the lexer to add the implicit
-    # blocks, so it doesn't need to.
-    # ')' can close a single-line block, but we need to make sure it's balanced.
-    def add_implicit_indentation
-      scan_tokens do |prev, token, post, i|
-        next 1 unless SINGLE_LINERS.include?(token[0]) && post[0] != :INDENT &&
-          !(token[0] == :ELSE && post[0] == :IF) # Elsifs shouldn't get blocks.
-        starter = token[0]
-        line = token[1].line
-        @tokens.insert(i + 1, [:INDENT, Value.new(2, line)])
-        idx = i + 1
-        parens = 0
-        loop do
-          idx += 1
-          tok = @tokens[idx]
-          if (!tok || SINGLE_CLOSERS.include?(tok[0]) ||
-              (tok[0] == ')' && parens == 0)) &&
-              !(starter == :ELSE && tok[0] == :ELSE)
-            insertion = @tokens[idx - 1][0] == "," ? idx - 1 : idx
-            @tokens.insert(insertion, [:OUTDENT, Value.new(2, line)])
-            break
-          end
-          parens += 1 if tok[0] == '('
-          parens -= 1 if tok[0] == ')'
-        end
-        next 1 unless token[0] == :THEN
-        @tokens.delete_at(i)
-        next 0
-      end
-    end
-
-    # Ensure that all listed pairs of tokens are correctly balanced throughout
-    # the course of the token stream.
-    def ensure_balance(*pairs)
-      puts "\nbefore ensure_balance: #{@tokens.inspect}" if ENV['VERBOSE']
-      levels, lines = Hash.new(0), Hash.new
-      scan_tokens do |prev, token, post, i|
-        pairs.each do |pair|
-          open, close = *pair
-          levels[open] += 1 if token[0] == open
-          levels[open] -= 1 if token[0] == close
-          lines[token[0]] = token[1].line
-          raise ParseError.new(token[0], token[1], nil) if levels[open] < 0
-        end
-        next 1
-      end
-      unclosed = levels.detect {|k, v| v > 0 }
-      sym = unclosed && unclosed[0]
-      raise ParseError.new(sym, Value.new(sym, lines[sym]), nil, "unclosed '#{sym}'") if unclosed
-    end
-
-    # We'd like to support syntax like this:
-    #    el.click((event) ->
-    #      el.hide())
-    # In order to accomplish this, move outdents that follow closing parens
-    # inwards, safely. The steps to accomplish this are:
-    #
-    # 1. Check that all paired tokens are balanced and in order.
-    # 2. Rewrite the stream with a stack: if you see an '(' or INDENT, add it
-    #    to the stack. If you see an ')' or OUTDENT, pop the stack and replace
-    #    it with the inverse of what we've just popped.
-    # 3. Keep track of "debt" for tokens that we fake, to make sure we end
-    #    up balanced in the end.
-    #
-    def rewrite_closing_parens
-      verbose = ENV['VERBOSE']
-      stack, debt = [], Hash.new(0)
-      stack_stats = lambda { "stack: #{stack.inspect} debt: #{debt.inspect}\n\n" }
-      puts "rewrite_closing_original: #{@tokens.inspect}" if verbose
-      scan_tokens do |prev, token, post, i|
-        tag, inv = token[0], INVERSES[token[0]]
-        # Push openers onto the stack.
-        if EXPRESSION_START.include?(tag)
-          stack.push(token)
-          puts "pushing #{tag} #{stack_stats[]}" if verbose
-          next 1
-        # The end of an expression, check stack and debt for a pair.
-        elsif EXPRESSION_TAIL.include?(tag)
-          puts @tokens[i..-1].inspect if verbose
-          # If the tag is already in our debt, swallow it.
-          if debt[inv] > 0
-            debt[inv] -= 1
-            @tokens.delete_at(i)
-            puts "tag in debt #{tag} #{stack_stats[]}" if verbose
-            next 0
-          else
-            # Pop the stack of open delimiters.
-            match = stack.pop
-            mtag  = match[0]
-            # Continue onwards if it's the expected tag.
-            if tag == INVERSES[mtag]
-              puts "expected tag #{tag} #{stack_stats[]}" if verbose
-              next 1
-            else
-              # Unexpected close, insert correct close, adding to the debt.
-              debt[mtag] += 1
-              puts "unexpected #{tag}, replacing with #{INVERSES[mtag]} #{stack_stats[]}" if verbose
-              val = mtag == :INDENT ? match[1] : INVERSES[mtag]
-              @tokens.insert(i, [INVERSES[mtag], Value.new(val, token[1].line)])
-              next 1
-            end
-          end
-        else
-          # Uninteresting token:
-          next 1
-        end
-      end
-    end
-
-  end
-end