mirror of
https://github.com/jashkenas/coffeescript.git
synced 2026-01-14 09:17:55 -05:00
522 lines
21 KiB
HTML
522 lines
21 KiB
HTML
<!DOCTYPE html>
|
|
|
|
<html>
|
|
<head>
|
|
<title>repl.coffee</title>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;">
|
|
<link rel="stylesheet" media="all" href="docco.css" />
|
|
</head>
|
|
<body>
|
|
<div id="container">
|
|
<div id="background"></div>
|
|
|
|
<ul id="jump_to">
|
|
<li>
|
|
<a class="large" href="javascript:void(0);">Jump To …</a>
|
|
<a class="small" href="javascript:void(0);">+</a>
|
|
<div id="jump_wrapper">
|
|
<div id="jump_page">
|
|
|
|
|
|
<a class="source" href="browser.html">
|
|
browser.coffee
|
|
</a>
|
|
|
|
|
|
<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="helpers.html">
|
|
helpers.coffee
|
|
</a>
|
|
|
|
|
|
<a class="source" href="index.html">
|
|
index.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="register.html">
|
|
register.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.litcoffee
|
|
</a>
|
|
|
|
|
|
<a class="source" href="sourcemap.html">
|
|
sourcemap.litcoffee
|
|
</a>
|
|
|
|
</div>
|
|
</li>
|
|
</ul>
|
|
|
|
<ul class="sections">
|
|
|
|
<li id="title">
|
|
<div class="annotation">
|
|
<h1>repl.coffee</h1>
|
|
</div>
|
|
</li>
|
|
|
|
|
|
|
|
<li id="section-1">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-1">¶</a>
|
|
</div>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre>fs = <span class="hljs-built_in">require</span> <span class="hljs-string">'fs'</span>
|
|
path = <span class="hljs-built_in">require</span> <span class="hljs-string">'path'</span>
|
|
vm = <span class="hljs-built_in">require</span> <span class="hljs-string">'vm'</span>
|
|
nodeREPL = <span class="hljs-built_in">require</span> <span class="hljs-string">'repl'</span>
|
|
CoffeeScript = <span class="hljs-built_in">require</span> <span class="hljs-string">'./coffee-script'</span>
|
|
{merge, updateSyntaxError} = <span class="hljs-built_in">require</span> <span class="hljs-string">'./helpers'</span>
|
|
|
|
replDefaults =
|
|
<span class="hljs-attribute">prompt</span>: <span class="hljs-string">'coffee> '</span>,
|
|
<span class="hljs-attribute">historyFile</span>: path.join process.env.HOME, <span class="hljs-string">'.coffee_history'</span> <span class="hljs-keyword">if</span> process.env.HOME
|
|
<span class="hljs-attribute">historyMaxInputSize</span>: <span class="hljs-number">10240</span>
|
|
<span class="hljs-attribute">eval</span>: <span class="hljs-function"><span class="hljs-params">(input, context, filename, cb)</span> -></span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-2">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-2">¶</a>
|
|
</div>
|
|
<p>XXX: multiline hack.</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> input = input.replace <span class="hljs-regexp">/\uFF00/g</span>, <span class="hljs-string">'\n'</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-3">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-3">¶</a>
|
|
</div>
|
|
<p>Node's REPL sends the input ending with a newline and then wrapped in
|
|
parens. Unwrap all that.</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> input = input.replace <span class="hljs-regexp">/^\(([\s\S]*)\n\)$/m</span>, <span class="hljs-string">'$1'</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-4">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-4">¶</a>
|
|
</div>
|
|
<p>Require AST nodes to do some AST manipulation.</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> {Block, Assign, Value, Literal} = <span class="hljs-built_in">require</span> <span class="hljs-string">'./nodes'</span>
|
|
|
|
<span class="hljs-keyword">try</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-5">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-5">¶</a>
|
|
</div>
|
|
<p>Generate the AST of the clean input.</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> ast = CoffeeScript.nodes input</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-6">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-6">¶</a>
|
|
</div>
|
|
<p>Add assignment to <code>_</code> variable to force the input to be an expression.</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> ast = <span class="hljs-keyword">new</span> Block [
|
|
<span class="hljs-keyword">new</span> Assign (<span class="hljs-keyword">new</span> Value <span class="hljs-keyword">new</span> Literal <span class="hljs-string">'_'</span>), ast, <span class="hljs-string">'='</span>
|
|
]
|
|
js = ast.compile <span class="hljs-attribute">bare</span>: <span class="hljs-literal">yes</span>, <span class="hljs-attribute">locals</span>: Object.keys(context)
|
|
result = <span class="hljs-keyword">if</span> context <span class="hljs-keyword">is</span> <span class="hljs-built_in">global</span>
|
|
vm.runInThisContext js, filename
|
|
<span class="hljs-keyword">else</span>
|
|
vm.runInContext js, context, filename
|
|
cb <span class="hljs-literal">null</span>, result
|
|
<span class="hljs-keyword">catch</span> err</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-7">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-7">¶</a>
|
|
</div>
|
|
<p>AST's <code>compile</code> does not add source code information to syntax errors.</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> updateSyntaxError err, input
|
|
cb err
|
|
|
|
<span class="hljs-function"><span class="hljs-title">addMultilineHandler</span> = <span class="hljs-params">(repl)</span> -></span>
|
|
{rli, inputStream, outputStream} = repl
|
|
|
|
multiline =
|
|
<span class="hljs-attribute">enabled</span>: <span class="hljs-literal">off</span>
|
|
<span class="hljs-attribute">initialPrompt</span>: repl.prompt.replace <span class="hljs-regexp">/^[^> ]*/</span>, <span class="hljs-function"><span class="hljs-params">(x)</span> -></span> x.replace <span class="hljs-regexp">/./g</span>, <span class="hljs-string">'-'</span>
|
|
<span class="hljs-attribute">prompt</span>: repl.prompt.replace <span class="hljs-regexp">/^[^> ]*>?/</span>, <span class="hljs-function"><span class="hljs-params">(x)</span> -></span> x.replace <span class="hljs-regexp">/./g</span>, <span class="hljs-string">'.'</span>
|
|
<span class="hljs-attribute">buffer</span>: <span class="hljs-string">''</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-8">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-8">¶</a>
|
|
</div>
|
|
<p>Proxy node's line listener</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> nodeLineListener = rli.listeners(<span class="hljs-string">'line'</span>)[<span class="hljs-number">0</span>]
|
|
rli.removeListener <span class="hljs-string">'line'</span>, nodeLineListener
|
|
rli.<span class="hljs-literal">on</span> <span class="hljs-string">'line'</span>, <span class="hljs-function"><span class="hljs-params">(cmd)</span> -></span>
|
|
<span class="hljs-keyword">if</span> multiline.enabled
|
|
multiline.buffer += <span class="hljs-string">"<span class="hljs-subst">#{cmd}</span>\n"</span>
|
|
rli.setPrompt multiline.prompt
|
|
rli.prompt <span class="hljs-literal">true</span>
|
|
<span class="hljs-keyword">else</span>
|
|
nodeLineListener cmd
|
|
<span class="hljs-keyword">return</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-9">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-9">¶</a>
|
|
</div>
|
|
<p>Handle Ctrl-v</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> inputStream.<span class="hljs-literal">on</span> <span class="hljs-string">'keypress'</span>, <span class="hljs-function"><span class="hljs-params">(char, key)</span> -></span>
|
|
<span class="hljs-keyword">return</span> <span class="hljs-keyword">unless</span> key <span class="hljs-keyword">and</span> key.ctrl <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> key.meta <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> key.shift <span class="hljs-keyword">and</span> key.name <span class="hljs-keyword">is</span> <span class="hljs-string">'v'</span>
|
|
<span class="hljs-keyword">if</span> multiline.enabled</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-10">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-10">¶</a>
|
|
</div>
|
|
<p>allow arbitrarily switching between modes any time before multiple lines are entered</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">unless</span> multiline.buffer.match <span class="hljs-regexp">/\n/</span>
|
|
multiline.enabled = <span class="hljs-keyword">not</span> multiline.enabled
|
|
rli.setPrompt repl.prompt
|
|
rli.prompt <span class="hljs-literal">true</span>
|
|
<span class="hljs-keyword">return</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-11">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-11">¶</a>
|
|
</div>
|
|
<p>no-op unless the current line is empty</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">return</span> <span class="hljs-keyword">if</span> rli.line? <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> rli.line.match <span class="hljs-regexp">/^\s*$/</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-12">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-12">¶</a>
|
|
</div>
|
|
<p>eval, print, loop</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> multiline.enabled = <span class="hljs-keyword">not</span> multiline.enabled
|
|
rli.line = <span class="hljs-string">''</span>
|
|
rli.cursor = <span class="hljs-number">0</span>
|
|
rli.output.cursorTo <span class="hljs-number">0</span>
|
|
rli.output.clearLine <span class="hljs-number">1</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-13">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-13">¶</a>
|
|
</div>
|
|
<p>XXX: multiline hack</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> multiline.buffer = multiline.buffer.replace <span class="hljs-regexp">/\n/g</span>, <span class="hljs-string">'\uFF00'</span>
|
|
rli.emit <span class="hljs-string">'line'</span>, multiline.buffer
|
|
multiline.buffer = <span class="hljs-string">''</span>
|
|
<span class="hljs-keyword">else</span>
|
|
multiline.enabled = <span class="hljs-keyword">not</span> multiline.enabled
|
|
rli.setPrompt multiline.initialPrompt
|
|
rli.prompt <span class="hljs-literal">true</span>
|
|
<span class="hljs-keyword">return</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-14">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-14">¶</a>
|
|
</div>
|
|
<p>Store and load command history from a file</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre><span class="hljs-function"><span class="hljs-title">addHistory</span> = <span class="hljs-params">(repl, filename, maxSize)</span> -></span>
|
|
lastLine = <span class="hljs-literal">null</span>
|
|
<span class="hljs-keyword">try</span></pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-15">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-15">¶</a>
|
|
</div>
|
|
<p>Get file info and at most maxSize of command history</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> stat = fs.statSync filename
|
|
size = Math.min maxSize, stat.size</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-16">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-16">¶</a>
|
|
</div>
|
|
<p>Read last <code>size</code> bytes from the file</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> readFd = fs.openSync filename, <span class="hljs-string">'r'</span>
|
|
buffer = <span class="hljs-keyword">new</span> Buffer(size)
|
|
fs.readSync readFd, buffer, <span class="hljs-number">0</span>, size, stat.size - size</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-17">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-17">¶</a>
|
|
</div>
|
|
<p>Set the history on the interpreter</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> repl.rli.history = buffer.toString().split(<span class="hljs-string">'\n'</span>).reverse()</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-18">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-18">¶</a>
|
|
</div>
|
|
<p>If the history file was truncated we should pop off a potential partial line</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> repl.rli.history.pop() <span class="hljs-keyword">if</span> stat.size > maxSize</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-19">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-19">¶</a>
|
|
</div>
|
|
<p>Shift off the final blank newline</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> repl.rli.history.shift() <span class="hljs-keyword">if</span> repl.rli.history[<span class="hljs-number">0</span>] <span class="hljs-keyword">is</span> <span class="hljs-string">''</span>
|
|
repl.rli.historyIndex = -<span class="hljs-number">1</span>
|
|
lastLine = repl.rli.history[<span class="hljs-number">0</span>]
|
|
|
|
fd = fs.openSync filename, <span class="hljs-string">'a'</span>
|
|
|
|
repl.rli.addListener <span class="hljs-string">'line'</span>, <span class="hljs-function"><span class="hljs-params">(code)</span> -></span>
|
|
<span class="hljs-keyword">if</span> code <span class="hljs-keyword">and</span> code.length <span class="hljs-keyword">and</span> code <span class="hljs-keyword">isnt</span> <span class="hljs-string">'.history'</span> <span class="hljs-keyword">and</span> lastLine <span class="hljs-keyword">isnt</span> code</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-20">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-20">¶</a>
|
|
</div>
|
|
<p>Save the latest command in the file</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> fs.write fd, <span class="hljs-string">"<span class="hljs-subst">#{code}</span>\n"</span>
|
|
lastLine = code
|
|
|
|
repl.rli.<span class="hljs-literal">on</span> <span class="hljs-string">'exit'</span>,<span class="hljs-function"> -></span> fs.close fd</pre></div></div>
|
|
|
|
</li>
|
|
|
|
|
|
<li id="section-21">
|
|
<div class="annotation">
|
|
|
|
<div class="pilwrap ">
|
|
<a class="pilcrow" href="#section-21">¶</a>
|
|
</div>
|
|
<p>Add a command to show the history stack</p>
|
|
|
|
</div>
|
|
|
|
<div class="content"><div class='highlight'><pre> repl.commands[<span class="hljs-string">'.history'</span>] =
|
|
<span class="hljs-attribute">help</span>: <span class="hljs-string">'Show command history'</span>
|
|
<span class="hljs-attribute">action</span>:<span class="hljs-function"> -></span>
|
|
repl.outputStream.write <span class="hljs-string">"<span class="hljs-subst">#{repl.rli.history[..].reverse().join <span class="hljs-string">'\n'</span>}</span>\n"</span>
|
|
repl.displayPrompt()
|
|
|
|
<span class="hljs-built_in">module</span>.<span class="hljs-built_in">exports</span> =
|
|
<span class="hljs-attribute">start</span>: <span class="hljs-function"><span class="hljs-params">(opts = {})</span> -></span>
|
|
[major, minor, build] = process.versions.node.split<span class="hljs-function"><span class="hljs-params">(<span class="hljs-string">'.'</span>)</span>.<span class="hljs-title">map</span> <span class="hljs-params">(n)</span> -></span> parseInt(n)
|
|
|
|
<span class="hljs-keyword">if</span> major <span class="hljs-keyword">is</span> <span class="hljs-number">0</span> <span class="hljs-keyword">and</span> minor < <span class="hljs-number">8</span>
|
|
<span class="hljs-built_in">console</span>.warn <span class="hljs-string">"Node 0.8.0+ required for CoffeeScript REPL"</span>
|
|
process.exit <span class="hljs-number">1</span>
|
|
|
|
CoffeeScript.register()
|
|
process.argv = [<span class="hljs-string">'coffee'</span>].concat process.argv[<span class="hljs-number">2.</span>.]
|
|
opts = merge replDefaults, opts
|
|
repl = nodeREPL.start opts
|
|
repl.<span class="hljs-literal">on</span> <span class="hljs-string">'exit'</span>,<span class="hljs-function"> -></span> repl.outputStream.write <span class="hljs-string">'\n'</span>
|
|
addMultilineHandler repl
|
|
addHistory repl, opts.historyFile, opts.historyMaxInputSize <span class="hljs-keyword">if</span> opts.historyFile
|
|
repl</pre></div></div>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
</body>
|
|
</html>
|