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Implemented continuable lines in the REPL. Use a trailing slash. Multiline functions are now possible.

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This commit is contained in:
Jeremy Ashkenas 2011-01-15 15:06:51 -05:00
parent 9a63b3147f
commit d8823ed45e
2 changed files with 17 additions and 6 deletions
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13
lib/repl.js
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@ -1,18 +1,23 @@
(function() {
var ACCESSOR, CoffeeScript, SIMPLEVAR, Script, autocomplete, completeAttribute, completeVariable, error, getCompletions, getPropertyNames, helpers, readline, repl, run, stdio;
var ACCESSOR, CoffeeScript, SIMPLEVAR, Script, autocomplete, backlog, completeAttribute, completeVariable, error, getCompletions, getPropertyNames, readline, repl, run, stdio;
var __hasProp = Object.prototype.hasOwnProperty;
CoffeeScript = require('./coffee-script');
helpers = require('./helpers');
readline = require('readline');
Script = process.binding('evals').Script;
stdio = process.openStdin();
error = function(err) {
return stdio.write((err.stack || err.toString()) + '\n\n');
};
backlog = '';
run = function(buffer) {
var val;
var code, val;
code = backlog += '\n' + buffer.toString();
if (code[code.length - 1] === '\\') {
return backlog = backlog.slice(0, backlog.length - 1);
}
backlog = '';
try {
val = CoffeeScript.eval(buffer.toString(), {
val = CoffeeScript.eval(code, {
bare: true,
globals: true,
filename: 'repl'

10
src/repl.coffee
View file

@ -6,7 +6,6 @@
# Require the **coffee-script** module to get access to the compiler.
CoffeeScript = require './coffee-script'
helpers = require './helpers'
readline = require 'readline'
Script = process.binding('evals').Script
@ -19,12 +18,19 @@ stdio = process.openStdin()
error = (err) ->
stdio.write (err.stack or err.toString()) + '\n\n'
# The current backlog of multi-line code.
backlog = ''
# The main REPL function. **run** 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.
run = (buffer) ->
code = backlog += '\n' + buffer.toString()
if code[code.length - 1] is '\\'
return backlog = backlog[0...backlog.length - 1]
backlog = ''
try
val = CoffeeScript.eval buffer.toString(), bare: on, globals: on, filename: 'repl'
val = CoffeeScript.eval code, bare: on, globals: on, filename: 'repl'
console.log val if val isnt undefined
catch err
error err