玛氪宕·梦魔(Markdown Memo),使用Markdown的云端备忘录,百度IFE的RIA启航班的不合格的作业,才……才没有什么阴谋呢!
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					741 lines
				
				22 KiB
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											11 years ago
										 
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								<!doctype html>
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								<title>CodeMirror: CoffeeScript mode</title>
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								<meta charset="utf-8"/>
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								<link rel=stylesheet href="../../doc/docs.css">
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								<link rel="stylesheet" href="../../lib/codemirror.css">
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								<script src="../../lib/codemirror.js"></script>
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								<script src="coffeescript.js"></script>
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								<style>.CodeMirror {border-top: 1px solid silver; border-bottom: 1px solid silver;}</style>
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								<div id=nav>
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								  <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
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								  <ul>
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								    <li><a href="../../index.html">Home</a>
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								    <li><a href="../../doc/manual.html">Manual</a>
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								    <li><a href="https://github.com/codemirror/codemirror">Code</a>
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								  </ul>
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								  <ul>
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								    <li><a href="../index.html">Language modes</a>
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								    <li><a class=active href="#">CoffeeScript</a>
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								  </ul>
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								</div>
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								<article>
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								<h2>CoffeeScript mode</h2>
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								<form><textarea id="code" name="code">
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								# CoffeeScript mode for CodeMirror
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								# Copyright (c) 2011 Jeff Pickhardt, released under
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								# the MIT License.
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								#
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								# Modified from the Python CodeMirror mode, which also is 
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								# under the MIT License Copyright (c) 2010 Timothy Farrell.
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								#
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								# The following script, Underscore.coffee, is used to 
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								# demonstrate CoffeeScript mode for CodeMirror.
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								#
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								# To download CoffeeScript mode for CodeMirror, go to:
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								# https://github.com/pickhardt/coffeescript-codemirror-mode
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								# **Underscore.coffee
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								# (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.**
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								# Underscore is freely distributable under the terms of the
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								# [MIT license](http://en.wikipedia.org/wiki/MIT_License).
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								# Portions of Underscore are inspired by or borrowed from
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								# [Prototype.js](http://prototypejs.org/api), Oliver Steele's
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								# [Functional](http://osteele.com), and John Resig's
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								# [Micro-Templating](http://ejohn.org).
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								# For all details and documentation:
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								# http://documentcloud.github.com/underscore/
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								# Baseline setup
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								# --------------
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								# Establish the root object, `window` in the browser, or `global` on the server.
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								root = this
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								# Save the previous value of the `_` variable.
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								previousUnderscore = root._
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								### Multiline
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								    comment
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								###
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								# Establish the object that gets thrown to break out of a loop iteration.
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								# `StopIteration` is SOP on Mozilla.
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								breaker = if typeof(StopIteration) is 'undefined' then '__break__' else StopIteration
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								#### Docco style single line comment (title)
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								# Helper function to escape **RegExp** contents, because JS doesn't have one.
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								escapeRegExp = (string) -> string.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1')
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								# Save bytes in the minified (but not gzipped) version:
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								ArrayProto = Array.prototype
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								ObjProto = Object.prototype
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								# Create quick reference variables for speed access to core prototypes.
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								slice = ArrayProto.slice
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								unshift = ArrayProto.unshift
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								toString = ObjProto.toString
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								hasOwnProperty = ObjProto.hasOwnProperty
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								propertyIsEnumerable = ObjProto.propertyIsEnumerable
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								# All **ECMA5** native implementations we hope to use are declared here.
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								nativeForEach = ArrayProto.forEach
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								nativeMap = ArrayProto.map
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								nativeReduce = ArrayProto.reduce
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								nativeReduceRight = ArrayProto.reduceRight
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								nativeFilter = ArrayProto.filter
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								nativeEvery = ArrayProto.every
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								nativeSome = ArrayProto.some
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								nativeIndexOf = ArrayProto.indexOf
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								nativeLastIndexOf = ArrayProto.lastIndexOf
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								nativeIsArray = Array.isArray
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								nativeKeys = Object.keys
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								# Create a safe reference to the Underscore object for use below.
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								_ = (obj) -> new wrapper(obj)
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								# Export the Underscore object for **CommonJS**.
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								if typeof(exports) != 'undefined' then exports._ = _
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								# Export Underscore to global scope.
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								root._ = _
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								# Current version.
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								_.VERSION = '1.1.0'
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								# Collection Functions
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								# --------------------
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								# The cornerstone, an **each** implementation.
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								# Handles objects implementing **forEach**, arrays, and raw objects.
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								_.each = (obj, iterator, context) ->
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								  try
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								    if nativeForEach and obj.forEach is nativeForEach
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								      obj.forEach iterator, context
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								    else if _.isNumber obj.length
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								      iterator.call context, obj[i], i, obj for i in [0...obj.length]
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								    else
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								      iterator.call context, val, key, obj for own key, val of obj
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								  catch e
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								    throw e if e isnt breaker
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								  obj
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								# Return the results of applying the iterator to each element. Use JavaScript
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								# 1.6's version of **map**, if possible.
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								_.map = (obj, iterator, context) ->
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								  return obj.map(iterator, context) if nativeMap and obj.map is nativeMap
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								  results = []
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								  _.each obj, (value, index, list) ->
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								    results.push iterator.call context, value, index, list
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								  results
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								# **Reduce** builds up a single result from a list of values. Also known as
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								# **inject**, or **foldl**. Uses JavaScript 1.8's version of **reduce**, if possible.
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								_.reduce = (obj, iterator, memo, context) ->
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								  if nativeReduce and obj.reduce is nativeReduce
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								    iterator = _.bind iterator, context if context
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								    return obj.reduce iterator, memo
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								  _.each obj, (value, index, list) ->
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								    memo = iterator.call context, memo, value, index, list
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								  memo
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								# The right-associative version of **reduce**, also known as **foldr**. Uses
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								# JavaScript 1.8's version of **reduceRight**, if available.
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								_.reduceRight = (obj, iterator, memo, context) ->
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								  if nativeReduceRight and obj.reduceRight is nativeReduceRight
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								    iterator = _.bind iterator, context if context
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								    return obj.reduceRight iterator, memo
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								  reversed = _.clone(_.toArray(obj)).reverse()
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								  _.reduce reversed, iterator, memo, context
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								# Return the first value which passes a truth test.
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								_.detect = (obj, iterator, context) ->
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								  result = null
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								  _.each obj, (value, index, list) ->
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								    if iterator.call context, value, index, list
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								      result = value
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								      _.breakLoop()
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								  result
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								# Return all the elements that pass a truth test. Use JavaScript 1.6's
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								# **filter**, if it exists.
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								_.filter = (obj, iterator, context) ->
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								  return obj.filter iterator, context if nativeFilter and obj.filter is nativeFilter
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								  results = []
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								  _.each obj, (value, index, list) ->
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								    results.push value if iterator.call context, value, index, list
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								  results
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								# Return all the elements for which a truth test fails.
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								_.reject = (obj, iterator, context) ->
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								  results = []
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								  _.each obj, (value, index, list) ->
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								    results.push value if not iterator.call context, value, index, list
							 | 
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								  results
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								# Determine whether all of the elements match a truth test. Delegate to
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								# JavaScript 1.6's **every**, if it is present.
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								_.every = (obj, iterator, context) ->
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								  iterator ||= _.identity
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								  return obj.every iterator, context if nativeEvery and obj.every is nativeEvery
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								  result = true
							 | 
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								  _.each obj, (value, index, list) ->
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								    _.breakLoop() unless (result = result and iterator.call(context, value, index, list))
							 | 
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								  result
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								# Determine if at least one element in the object matches a truth test. Use
							 | 
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								# JavaScript 1.6's **some**, if it exists.
							 | 
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								_.some = (obj, iterator, context) ->
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								  iterator ||= _.identity
							 | 
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								  return obj.some iterator, context if nativeSome and obj.some is nativeSome
							 | 
						||
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								  result = false
							 | 
						||
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								  _.each obj, (value, index, list) ->
							 | 
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								    _.breakLoop() if (result = iterator.call(context, value, index, list))
							 | 
						||
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								  result
							 | 
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							 | 
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| 
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							 | 
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								# Determine if a given value is included in the array or object,
							 | 
						||
| 
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								# based on `===`.
							 | 
						||
| 
								 | 
							
								_.include = (obj, target) ->
							 | 
						||
| 
								 | 
							
								  return _.indexOf(obj, target) isnt -1 if nativeIndexOf and obj.indexOf is nativeIndexOf
							 | 
						||
| 
								 | 
							
								  return true for own key, val of obj when val is target
							 | 
						||
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								 | 
							
								  false
							 | 
						||
| 
								 | 
							
								
							 | 
						||
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								 | 
							
								
							 | 
						||
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								 | 
							
								# Invoke a method with arguments on every item in a collection.
							 | 
						||
| 
								 | 
							
								_.invoke = (obj, method) ->
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								  args = _.rest arguments, 2
							 | 
						||
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								  (if method then val[method] else val).apply(val, args) for val in obj
							 | 
						||
| 
								 | 
							
								
							 | 
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| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Convenience version of a common use case of **map**: fetching a property.
							 | 
						||
| 
								 | 
							
								_.pluck = (obj, key) ->
							 | 
						||
| 
								 | 
							
								  _.map(obj, (val) -> val[key])
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Return the maximum item or (item-based computation).
							 | 
						||
| 
								 | 
							
								_.max = (obj, iterator, context) ->
							 | 
						||
| 
								 | 
							
								  return Math.max.apply(Math, obj) if not iterator and _.isArray(obj)
							 | 
						||
| 
								 | 
							
								  result = computed: -Infinity
							 | 
						||
| 
								 | 
							
								  _.each obj, (value, index, list) ->
							 | 
						||
| 
								 | 
							
								    computed = if iterator then iterator.call(context, value, index, list) else value
							 | 
						||
| 
								 | 
							
								    computed >= result.computed and (result = {value: value, computed: computed})
							 | 
						||
| 
								 | 
							
								  result.value
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
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								 | 
							
								# Return the minimum element (or element-based computation).
							 | 
						||
| 
								 | 
							
								_.min = (obj, iterator, context) ->
							 | 
						||
| 
								 | 
							
								  return Math.min.apply(Math, obj) if not iterator and _.isArray(obj)
							 | 
						||
| 
								 | 
							
								  result = computed: Infinity
							 | 
						||
| 
								 | 
							
								  _.each obj, (value, index, list) ->
							 | 
						||
| 
								 | 
							
								    computed = if iterator then iterator.call(context, value, index, list) else value
							 | 
						||
| 
								 | 
							
								    computed < result.computed and (result = {value: value, computed: computed})
							 | 
						||
| 
								 | 
							
								  result.value
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# 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)}
							 | 
						||
| 
								 | 
							
								  ).sort((left, right) ->
							 | 
						||
| 
								 | 
							
								    a = left.criteria; b = right.criteria
							 | 
						||
| 
								 | 
							
								    if a < b then -1 else if a > b then 1 else 0
							 | 
						||
| 
								 | 
							
								  )), 'value')
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Use a comparator function to figure out at what index an object should
							 | 
						||
| 
								 | 
							
								# be inserted so as to maintain order. Uses binary search.
							 | 
						||
| 
								 | 
							
								_.sortedIndex = (array, obj, iterator) ->
							 | 
						||
| 
								 | 
							
								  iterator ||= _.identity
							 | 
						||
| 
								 | 
							
								  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
							 | 
						||
| 
								 | 
							
								  low
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Convert anything iterable into a real, live array.
							 | 
						||
| 
								 | 
							
								_.toArray = (iterable) ->
							 | 
						||
| 
								 | 
							
								  return [] if (!iterable)
							 | 
						||
| 
								 | 
							
								  return iterable.toArray() if (iterable.toArray)
							 | 
						||
| 
								 | 
							
								  return iterable if (_.isArray(iterable))
							 | 
						||
| 
								 | 
							
								  return slice.call(iterable) if (_.isArguments(iterable))
							 | 
						||
| 
								 | 
							
								  _.values(iterable)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Return the number of elements in an object.
							 | 
						||
| 
								 | 
							
								_.size = (obj) -> _.toArray(obj).length
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Array Functions
							 | 
						||
| 
								 | 
							
								# ---------------
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Get the first element of an array. Passing `n` will return the first N
							 | 
						||
| 
								 | 
							
								# values in the array. Aliased as **head**. The `guard` check allows it to work
							 | 
						||
| 
								 | 
							
								# with **map**.
							 | 
						||
| 
								 | 
							
								_.first = (array, n, guard) ->
							 | 
						||
| 
								 | 
							
								  if n and not guard then slice.call(array, 0, n) else array[0]
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Returns everything but the first entry of the array. Aliased as **tail**.
							 | 
						||
| 
								 | 
							
								# Especially useful on the arguments object. Passing an `index` will return
							 | 
						||
| 
								 | 
							
								# the rest of the values in the array from that index onward. The `guard`
							 | 
						||
| 
								 | 
							
								# check allows it to work with **map**.
							 | 
						||
| 
								 | 
							
								_.rest = (array, index, guard) ->
							 | 
						||
| 
								 | 
							
								  slice.call(array, if _.isUndefined(index) or guard then 1 else index)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Get the last element of an array.
							 | 
						||
| 
								 | 
							
								_.last = (array) -> array[array.length - 1]
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Trim out all falsy values from an array.
							 | 
						||
| 
								 | 
							
								_.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
							 | 
						||
| 
								 | 
							
								    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
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# 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))
							 | 
						||
| 
								 | 
							
								  memo
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Produce an array that contains every item shared between all the
							 | 
						||
| 
								 | 
							
								# passed-in arrays.
							 | 
						||
| 
								 | 
							
								_.intersect = (array) ->
							 | 
						||
| 
								 | 
							
								  rest = _.rest arguments
							 | 
						||
| 
								 | 
							
								  _.select _.uniq(array), (item) ->
							 | 
						||
| 
								 | 
							
								    _.all rest, (other) ->
							 | 
						||
| 
								 | 
							
								      _.indexOf(other, item) >= 0
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# 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
							 | 
						||
| 
								 | 
							
								  for i in [0...length]
							 | 
						||
| 
								 | 
							
								    results[i] = _.pluck arguments, String i
							 | 
						||
| 
								 | 
							
								  results
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# If the browser doesn't supply us with **indexOf** (I'm looking at you, MSIE),
							 | 
						||
| 
								 | 
							
								# we need this function. Return the position of the first occurrence 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 nativeIndexOf and array.indexOf is nativeIndexOf
							 | 
						||
| 
								 | 
							
								  i = 0; l = array.length
							 | 
						||
| 
								 | 
							
								  while l - i
							 | 
						||
| 
								 | 
							
								    if array[i] is item then return i else i++
							 | 
						||
| 
								 | 
							
								  -1
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Provide JavaScript 1.6's **lastIndexOf**, delegating to the native function,
							 | 
						||
| 
								 | 
							
								# if possible.
							 | 
						||
| 
								 | 
							
								_.lastIndexOf = (array, item) ->
							 | 
						||
| 
								 | 
							
								  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--
							 | 
						||
| 
								 | 
							
								  -1
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Generate an integer Array containing an arithmetic progression. A port of
							 | 
						||
| 
								 | 
							
								# [the native Python **range** function](http://docs.python.org/library/functions.html#range).
							 | 
						||
| 
								 | 
							
								_.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]
							 | 
						||
| 
								 | 
							
								  step = a[2] or 1
							 | 
						||
| 
								 | 
							
								  len = Math.ceil((stop - start) / step)
							 | 
						||
| 
								 | 
							
								  return [] if len <= 0
							 | 
						||
| 
								 | 
							
								  range = new Array len
							 | 
						||
| 
								 | 
							
								  idx = 0
							 | 
						||
| 
								 | 
							
								  loop
							 | 
						||
| 
								 | 
							
								    return range if (if step > 0 then i - stop else stop - i) >= 0
							 | 
						||
| 
								 | 
							
								    range[idx] = i
							 | 
						||
| 
								 | 
							
								    idx++
							 | 
						||
| 
								 | 
							
								    i+= step
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Function Functions
							 | 
						||
| 
								 | 
							
								# ------------------
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# 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
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# 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
							 | 
						||
| 
								 | 
							
								  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
							 | 
						||
| 
								 | 
							
								  setTimeout((-> func.apply(func, args)), wait)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Memoize an expensive function by storing its results.
							 | 
						||
| 
								 | 
							
								_.memoize = (func, hasher) ->
							 | 
						||
| 
								 | 
							
								  memo = {}
							 | 
						||
| 
								 | 
							
								  hasher or= _.identity
							 | 
						||
| 
								 | 
							
								  ->
							 | 
						||
| 
								 | 
							
								    key = hasher.apply this, arguments
							 | 
						||
| 
								 | 
							
								    return memo[key] if key of memo
							 | 
						||
| 
								 | 
							
								    memo[key] = func.apply this, arguments
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Defers a function, scheduling it to run after the current call stack has
							 | 
						||
| 
								 | 
							
								# cleared.
							 | 
						||
| 
								 | 
							
								_.defer = (func) ->
							 | 
						||
| 
								 | 
							
								  _.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
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Returns a function that is the composition of a list of functions, each
							 | 
						||
| 
								 | 
							
								# consuming the return value of the function that follows.
							 | 
						||
| 
								 | 
							
								_.compose = ->
							 | 
						||
| 
								 | 
							
								  funcs = arguments
							 | 
						||
| 
								 | 
							
								  ->
							 | 
						||
| 
								 | 
							
								    args = arguments
							 | 
						||
| 
								 | 
							
								    for i in [funcs.length - 1..0] by -1
							 | 
						||
| 
								 | 
							
								      args = [funcs[i].apply(this, args)]
							 | 
						||
| 
								 | 
							
								    args[0]
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Object Functions
							 | 
						||
| 
								 | 
							
								# ----------------
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Retrieve the names of an object's properties.
							 | 
						||
| 
								 | 
							
								_.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
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Return a sorted list of the function names available in Underscore.
							 | 
						||
| 
								 | 
							
								_.functions = (obj) ->
							 | 
						||
| 
								 | 
							
								  _.filter(_.keys(obj), (key) -> _.isFunction(obj[key])).sort()
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Extend a given object with all of the properties in a source object.
							 | 
						||
| 
								 | 
							
								_.extend = (obj) ->
							 | 
						||
| 
								 | 
							
								  for source in _.rest(arguments)
							 | 
						||
| 
								 | 
							
								    obj[key] = val for key, val of source
							 | 
						||
| 
								 | 
							
								  obj
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Create a (shallow-cloned) duplicate of an object.
							 | 
						||
| 
								 | 
							
								_.clone = (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
							 | 
						||
| 
								 | 
							
								  obj
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Perform a deep comparison to check if two objects are equal.
							 | 
						||
| 
								 | 
							
								_.isEqual = (a, b) ->
							 | 
						||
| 
								 | 
							
								  # Check object identity.
							 | 
						||
| 
								 | 
							
								  return true if a is b
							 | 
						||
| 
								 | 
							
								  # Different types?
							 | 
						||
| 
								 | 
							
								  atype = typeof(a); btype = typeof(b)
							 | 
						||
| 
								 | 
							
								  return false if atype isnt btype
							 | 
						||
| 
								 | 
							
								  # Basic equality test (watch out for coercions).
							 | 
						||
| 
								 | 
							
								  return true if `a == b`
							 | 
						||
| 
								 | 
							
								  # One is falsy and the other truthy.
							 | 
						||
| 
								 | 
							
								  return false if (!a and b) or (a and !b)
							 | 
						||
| 
								 | 
							
								  # One of them implements an `isEqual()`?
							 | 
						||
| 
								 | 
							
								  return a.isEqual(b) if a.isEqual
							 | 
						||
| 
								 | 
							
								  # Check dates' integer values.
							 | 
						||
| 
								 | 
							
								  return a.getTime() is b.getTime() if _.isDate(a) and _.isDate(b)
							 | 
						||
| 
								 | 
							
								  # Both are NaN?
							 | 
						||
| 
								 | 
							
								  return false if _.isNaN(a) and _.isNaN(b)
							 | 
						||
| 
								 | 
							
								  # Compare regular expressions.
							 | 
						||
| 
								 | 
							
								  if _.isRegExp(a) and _.isRegExp(b)
							 | 
						||
| 
								 | 
							
								    return a.source is b.source and
							 | 
						||
| 
								 | 
							
								           a.global is b.global and
							 | 
						||
| 
								 | 
							
								           a.ignoreCase is b.ignoreCase and
							 | 
						||
| 
								 | 
							
								           a.multiline is b.multiline
							 | 
						||
| 
								 | 
							
								  # If a is not an object by this point, we can't handle it.
							 | 
						||
| 
								 | 
							
								  return false if atype isnt 'object'
							 | 
						||
| 
								 | 
							
								  # Check for different array lengths before comparing contents.
							 | 
						||
| 
								 | 
							
								  return false if a.length and (a.length isnt b.length)
							 | 
						||
| 
								 | 
							
								  # Nothing else worked, deep compare the contents.
							 | 
						||
| 
								 | 
							
								  aKeys = _.keys(a); bKeys = _.keys(b)
							 | 
						||
| 
								 | 
							
								  # Different object sizes?
							 | 
						||
| 
								 | 
							
								  return false if aKeys.length isnt bKeys.length
							 | 
						||
| 
								 | 
							
								  # Recursive comparison of contents.
							 | 
						||
| 
								 | 
							
								  return false for key, val of a when !(key of b) or !_.isEqual(val, b[key])
							 | 
						||
| 
								 | 
							
								  true
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is a given array or object empty?
							 | 
						||
| 
								 | 
							
								_.isEmpty = (obj) ->
							 | 
						||
| 
								 | 
							
								  return obj.length is 0 if _.isArray(obj) or _.isString(obj)
							 | 
						||
| 
								 | 
							
								  return false for own key of obj
							 | 
						||
| 
								 | 
							
								  true
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is a given value a DOM element?
							 | 
						||
| 
								 | 
							
								_.isElement = (obj) -> obj and obj.nodeType is 1
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is a given value an array?
							 | 
						||
| 
								 | 
							
								_.isArray = nativeIsArray or (obj) -> !!(obj and obj.concat and obj.unshift and not obj.callee)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is a given variable an arguments object?
							 | 
						||
| 
								 | 
							
								_.isArguments = (obj) -> obj and obj.callee
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is the given value a function?
							 | 
						||
| 
								 | 
							
								_.isFunction = (obj) -> !!(obj and obj.constructor and obj.call and obj.apply)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is the given value a string?
							 | 
						||
| 
								 | 
							
								_.isString = (obj) -> !!(obj is '' or (obj and obj.charCodeAt and obj.substr))
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is a given value a number?
							 | 
						||
| 
								 | 
							
								_.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)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is the given value a regular expression?
							 | 
						||
| 
								 | 
							
								_.isRegExp = (obj) -> !!(obj and obj.exec and (obj.ignoreCase or obj.ignoreCase is false))
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is the given value NaN -- this one is interesting. `NaN != NaN`, and
							 | 
						||
| 
								 | 
							
								# `isNaN(undefined) == true`, so we make sure it's a number first.
							 | 
						||
| 
								 | 
							
								_.isNaN = (obj) -> _.isNumber(obj) and window.isNaN(obj)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is a given value equal to null?
							 | 
						||
| 
								 | 
							
								_.isNull = (obj) -> obj is null
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Is a given variable undefined?
							 | 
						||
| 
								 | 
							
								_.isUndefined = (obj) -> typeof obj is 'undefined'
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Utility Functions
							 | 
						||
| 
								 | 
							
								# -----------------
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Run Underscore.js in noConflict mode, returning the `_` variable to its
							 | 
						||
| 
								 | 
							
								# previous owner. Returns a reference to the Underscore object.
							 | 
						||
| 
								 | 
							
								_.noConflict = ->
							 | 
						||
| 
								 | 
							
								  root._ = previousUnderscore
							 | 
						||
| 
								 | 
							
								  this
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Keep the identity function around for default iterators.
							 | 
						||
| 
								 | 
							
								_.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
							 | 
						||
| 
								 | 
							
								_.uniqueId = (prefix) ->
							 | 
						||
| 
								 | 
							
								  (prefix or '') + idCounter++
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# By default, Underscore uses **ERB**-style template delimiters, change the
							 | 
						||
| 
								 | 
							
								# following template settings to use alternative delimiters.
							 | 
						||
| 
								 | 
							
								_.templateSettings = {
							 | 
						||
| 
								 | 
							
								  start: '<%'
							 | 
						||
| 
								 | 
							
								  end: '%>'
							 | 
						||
| 
								 | 
							
								  interpolate: /<%=(.+?)%>/g
							 | 
						||
| 
								 | 
							
								}
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# JavaScript templating a-la **ERB**, pilfered from John Resig's
							 | 
						||
| 
								 | 
							
								# *Secrets of the JavaScript Ninja*, page 83.
							 | 
						||
| 
								 | 
							
								# Single-quote fix from Rick Strahl.
							 | 
						||
| 
								 | 
							
								# With alterations for arbitrary delimiters, and to preserve whitespace.
							 | 
						||
| 
								 | 
							
								_.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/g, '\\r')
							 | 
						||
| 
								 | 
							
								       .replace(/\n/g, '\\n')
							 | 
						||
| 
								 | 
							
								       .replace(/\t/g, '\\t')
							 | 
						||
| 
								 | 
							
								       .replace(endMatch,"���")
							 | 
						||
| 
								 | 
							
								       .split("'").join("\\'")
							 | 
						||
| 
								 | 
							
								       .split("���").join("'")
							 | 
						||
| 
								 | 
							
								       .replace(c.interpolate, "',$1,'")
							 | 
						||
| 
								 | 
							
								       .split(c.start).join("');")
							 | 
						||
| 
								 | 
							
								       .split(c.end).join("p.push('") +
							 | 
						||
| 
								 | 
							
								       "');}return p.join('');"
							 | 
						||
| 
								 | 
							
								  if data then fn(data) else fn
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Aliases
							 | 
						||
| 
								 | 
							
								# -------
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								_.forEach = _.each
							 | 
						||
| 
								 | 
							
								_.foldl = _.inject = _.reduce
							 | 
						||
| 
								 | 
							
								_.foldr = _.reduceRight
							 | 
						||
| 
								 | 
							
								_.select = _.filter
							 | 
						||
| 
								 | 
							
								_.all = _.every
							 | 
						||
| 
								 | 
							
								_.any = _.some
							 | 
						||
| 
								 | 
							
								_.contains = _.include
							 | 
						||
| 
								 | 
							
								_.head = _.first
							 | 
						||
| 
								 | 
							
								_.tail = _.rest
							 | 
						||
| 
								 | 
							
								_.methods = _.functions
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# 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
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# A method to easily add functions to the OOP wrapper.
							 | 
						||
| 
								 | 
							
								addToWrapper = (name, func) ->
							 | 
						||
| 
								 | 
							
								  wrapper.prototype[name] = ->
							 | 
						||
| 
								 | 
							
								    args = _.toArray arguments
							 | 
						||
| 
								 | 
							
								    unshift.call args, this._wrapped
							 | 
						||
| 
								 | 
							
								    result func.apply(_, args), this._chain
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Add all ofthe Underscore functions to the wrapper object.
							 | 
						||
| 
								 | 
							
								_.mixin _
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Add all mutator Array functions to the wrapper.
							 | 
						||
| 
								 | 
							
								_.each ['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], (name) ->
							 | 
						||
| 
								 | 
							
								  method = Array.prototype[name]
							 | 
						||
| 
								 | 
							
								  wrapper.prototype[name] = ->
							 | 
						||
| 
								 | 
							
								    method.apply(this._wrapped, arguments)
							 | 
						||
| 
								 | 
							
								    result(this._wrapped, this._chain)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Add all accessor Array functions to the wrapper.
							 | 
						||
| 
								 | 
							
								_.each ['concat', 'join', 'slice'], (name) ->
							 | 
						||
| 
								 | 
							
								  method = Array.prototype[name]
							 | 
						||
| 
								 | 
							
								  wrapper.prototype[name] = ->
							 | 
						||
| 
								 | 
							
								    result(method.apply(this._wrapped, arguments), this._chain)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Start chaining a wrapped Underscore object.
							 | 
						||
| 
								 | 
							
								wrapper::chain = ->
							 | 
						||
| 
								 | 
							
								  this._chain = true
							 | 
						||
| 
								 | 
							
								  this
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# Extracts the result from a wrapped and chained object.
							 | 
						||
| 
								 | 
							
								wrapper::value = -> this._wrapped
							 | 
						||
| 
								 | 
							
								</textarea></form>
							 | 
						||
| 
								 | 
							
								    <script>
							 | 
						||
| 
								 | 
							
								      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
							 | 
						||
| 
								 | 
							
								    </script>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    <p><strong>MIME types defined:</strong> <code>text/x-coffeescript</code>.</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    <p>The CoffeeScript mode was written by Jeff Pickhardt.</p>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								  </article>
							 |