Merge branch 'master' of https://github.com/ryszard/coffee-script into 1.1-pre

lib/repl.js

@@ -1,7 +1,8 @@
 (function() {
-  var CoffeeScript, error, helpers, readline, repl, run, stdio;
+  var CoffeeScript, autocomplete, error, helpers, readline, repl, run, stdio;
   CoffeeScript = require('./coffee-script');
   helpers = require('./helpers');
+  autocomplete = require('./autocomplete');
   readline = require('readline');
   stdio = process.openStdin();
   error = function(err) {
@@ -29,7 +30,7 @@
     return repl.prompt();
   };
   process.on('uncaughtException', error);
-  repl = readline.createInterface(stdio);
+  repl = readline.createInterface(stdio, autocomplete.complete);
   repl.setPrompt('coffee> ');
   stdio.on('data', function(buffer) {
     return repl.write(buffer);

src/autocomplete.coffee

@@ -0,0 +1,34 @@
+
+{RESERVED} = require './coffee-script'
+Script = process.binding('evals').Script
+
+# Return elements of candidates for which `prefix` is a prefix.
+get_completions = (prefix, candidates) ->
+  (el for el in candidates when el.indexOf(prefix) == 0)
+
+get_property_names = (o) ->
+  try
+    Object.getOwnPropertyNames(o)
+  catch error
+    (k for k of o)
+
+complete_attribute = (text) ->
+  match = /\s*([\w\.]+)(?:\.(\w*))$/.exec(text)
+  if match?
+    [ob, prefix] = [match[1], match[2]]
+    try
+      val = Script.runInThisContext ob
+    catch error
+      return [[], text]
+    completions = get_completions prefix, get_property_names val
+    [completions, prefix]
+
+complete_variable = (text) ->
+  free = /\W*(\w*)$/i.exec(text)?[1]
+  if free?
+    completions = get_completions free, RESERVED.concat(get_property_names Script.runInThisContext 'this')
+    [completions, free]
+
+# Returns a list of completions and the completed text
+exports.complete = (text) ->
+  complete_attribute(text) or complete_variable(text) or [[], text]

src/repl.coffee

@@ -7,6 +7,7 @@
 # Require the **coffee-script** module to get access to the compiler.
 CoffeeScript = require './coffee-script'
 helpers      = require './helpers'
+autocomplete = require './autocomplete'
 readline     = require 'readline'
 
 # Start by opening up **stdio**.
@@ -34,7 +35,7 @@ run = (buffer) ->
 process.on 'uncaughtException', error
 
 # Create the REPL by listening to **stdin**.
-repl = readline.createInterface stdio
+repl = readline.createInterface stdio, autocomplete.complete
 repl.setPrompt 'coffee> '
 stdio.on 'data',   (buffer) -> repl.write buffer
 repl.on  'close',  -> stdio.destroy()

test/test_autocomplete.coffee

@@ -0,0 +1,32 @@
+return unless require?
+
+complete = require './../lib/autocomplete'
+
+eq_set = (left, right) ->
+  left = left.slice(0)
+  right = right.slice(0)
+  left.sort()
+  right.sort()
+  eq left.join(' '), right.join(' ')
+
+# JavaScript keywords
+[completions, completed] = complete.complete "c"
+ok completions instanceof Array
+should_be = ["case", "catch", "class", "clearInterval", "clearTimeout", "console", "const", "continue"]
+eq_set should_be, completions
+
+[completions, completed] = complete.complete 'E'
+eq_set completions, ['EvalError', 'Error']
+
+[completions, completed] = complete.complete "Math.c"
+eq_set completions, ["cos", "ceil"]
+
+# I don't know how to make this testable :(
+# a = {baba: 1, babo: 2}
+
+# [completions, completed] = complete.complete "a.bab"
+# eq_set completions, ["baba", "babo"]
+
+
+
+