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<!doctype html>
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<html>
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  <head>
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    <title>CodeMirror: CoffeeScript mode</title>
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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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    <link rel="stylesheet" href="../../doc/docs.css">
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  </head>
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  <body>
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    <h1>CodeMirror: CoffeeScript mode</h1>
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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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# 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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# 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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# Determine if a given value is included in the array or object,
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# based on `===`.
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_.include = (obj, target) ->
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  return _.indexOf(obj, target) isnt -1 if nativeIndexOf and obj.indexOf is nativeIndexOf
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  return true for own key, val of obj when val is target
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  false
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# Invoke a method with arguments on every item in a collection.
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_.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.
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_.pluck = (obj, key) ->
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  _.map(obj, (val) -> val[key])
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# Return the maximum item or (item-based computation).
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_.max = (obj, iterator, context) ->
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  return Math.max.apply(Math, obj) if not iterator and _.isArray(obj)
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  result = computed: -Infinity
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  _.each obj, (value, index, list) ->
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    computed = if iterator then iterator.call(context, value, index, list) else value
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    computed >= result.computed and (result = {value: value, computed: computed})
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  result.value
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# Return the minimum element (or element-based computation).
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_.min = (obj, iterator, context) ->
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  return Math.min.apply(Math, obj) if not iterator and _.isArray(obj)
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  result = computed: Infinity
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  _.each obj, (value, index, list) ->
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    computed = if iterator then iterator.call(context, value, index, list) else value
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    computed < result.computed and (result = {value: value, computed: computed})
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  result.value
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# Sort the object's values by a criterion produced by an iterator.
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_.sortBy = (obj, iterator, context) ->
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  _.pluck(((_.map obj, (value, index, list) ->
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    {value: value, criteria: iterator.call(context, value, index, list)}
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  ).sort((left, right) ->
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    a = left.criteria; b = right.criteria
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    if a < b then -1 else if a > b then 1 else 0
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  )), 'value')
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# Use a comparator function to figure out at what index an object should
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# be inserted so as to maintain order. Uses binary search.
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_.sortedIndex = (array, obj, iterator) ->
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  iterator ||= _.identity
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  low = 0
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  high = array.length
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  while low < high
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    mid = (low + high) >> 1
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    if iterator(array[mid]) < iterator(obj) then low = mid + 1 else high = mid
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  low
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# Convert anything iterable into a real, live array.
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_.toArray = (iterable) ->
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  return [] if (!iterable)
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  return iterable.toArray() if (iterable.toArray)
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  return iterable if (_.isArray(iterable))
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  return slice.call(iterable) if (_.isArguments(iterable))
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  _.values(iterable)
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# Return the number of elements in an object.
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_.size = (obj) -> _.toArray(obj).length
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# Array Functions
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# ---------------
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278
# Get the first element of an array. Passing `n` will return the first N
279
# values in the array. Aliased as **head**. The `guard` check allows it to work
280
# with **map**.
281
_.first = (array, n, guard) ->
282
  if n and not guard then slice.call(array, 0, n) else array[0]
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# Returns everything but the first entry of the array. Aliased as **tail**.
286
# Especially useful on the arguments object. Passing an `index` will return
287
# the rest of the values in the array from that index onward. The `guard`
288
# check allows it to work with **map**.
289
_.rest = (array, index, guard) ->
290
  slice.call(array, if _.isUndefined(index) or guard then 1 else index)
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# Get the last element of an array.
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_.last = (array) -> array[array.length - 1]
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# Trim out all falsy values from an array.
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_.compact = (array) -> item for item in array when item
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# Return a completely flattened version of an array.
302
_.flatten = (array) ->
303
  _.reduce array, (memo, value) ->
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    return memo.concat(_.flatten(value)) if _.isArray value
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    memo.push value
306
    memo
307
  , []
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# Return a version of the array that does not contain the specified value(s).
311
_.without = (array) ->
312
  values = _.rest arguments
313
  val for val in _.toArray(array) when not _.include values, val
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# Produce a duplicate-free version of the array. If the array has already
317
# been sorted, you have the option of using a faster algorithm.
318
_.uniq = (array, isSorted) ->
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  memo = []
320
  for el, i in _.toArray array
321
    memo.push el if i is 0 || (if isSorted is true then _.last(memo) isnt el else not _.include(memo, el))
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  memo
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# Produce an array that contains every item shared between all the
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# passed-in arrays.
327
_.intersect = (array) ->
328
  rest = _.rest arguments
329
  _.select _.uniq(array), (item) ->
330
    _.all rest, (other) ->
331
      _.indexOf(other, item) >= 0
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# Zip together multiple lists into a single array -- elements that share
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# an index go together.
336
_.zip = ->
337
  length = _.max _.pluck arguments, 'length'
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  results = new Array length
339
  for i in [0...length]
340
    results[i] = _.pluck arguments, String i
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  results
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# If the browser doesn't supply us with **indexOf** (I'm looking at you, MSIE),
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# we need this function. Return the position of the first occurrence of an
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# item in an array, or -1 if the item is not included in the array.
347
_.indexOf = (array, item) ->
348
  return array.indexOf item if nativeIndexOf and array.indexOf is nativeIndexOf
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  i = 0; l = array.length
350
  while l - i
351
    if array[i] is item then return i else i++
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  -1
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# Provide JavaScript 1.6's **lastIndexOf**, delegating to the native function,
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# if possible.
357
_.lastIndexOf = (array, item) ->
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  return array.lastIndexOf(item) if nativeLastIndexOf and array.lastIndexOf is nativeLastIndexOf
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  i = array.length
360
  while i
361
    if array[i] is item then return i else i--
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  -1
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# Generate an integer Array containing an arithmetic progression. A port of
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# [the native Python **range** function](http://docs.python.org/library/functions.html#range).
367
_.range = (start, stop, step) ->
368
  a = arguments
369
  solo = a.length <= 1
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  i = start = if solo then 0 else a[0]
371
  stop = if solo then a[0] else a[1]
372
  step = a[2] or 1
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  len = Math.ceil((stop - start) / step)
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  return [] if len <= 0
375
  range = new Array len
376
  idx = 0
377
  loop
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    return range if (if step > 0 then i - stop else stop - i) >= 0
379
    range[idx] = i
380
    idx++
381
    i+= step
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# Function Functions
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# ------------------
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387
# Create a function bound to a given object (assigning `this`, and arguments,
388
# optionally). Binding with arguments is also known as **curry**.
389
_.bind = (func, obj) ->
390
  args = _.rest arguments, 2
391
  -> func.apply obj or root, args.concat arguments
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# Bind all of an object's methods to that object. Useful for ensuring that
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# all callbacks defined on an object belong to it.
396
_.bindAll = (obj) ->
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  funcs = if arguments.length > 1 then _.rest(arguments) else _.functions(obj)
398
  _.each funcs, (f) -> obj[f] = _.bind obj[f], obj
399
  obj
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# Delays a function for the given number of milliseconds, and then calls
403
# it with the arguments supplied.
404
_.delay = (func, wait) ->
405
  args = _.rest arguments, 2
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  setTimeout((-> func.apply(func, args)), wait)
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# Memoize an expensive function by storing its results.
410
_.memoize = (func, hasher) ->
411
  memo = {}
412
  hasher or= _.identity
413
  ->
414
    key = hasher.apply this, arguments
415
    return memo[key] if key of memo
416
    memo[key] = func.apply this, arguments
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# Defers a function, scheduling it to run after the current call stack has
420
# cleared.
421
_.defer = (func) ->
422
  _.delay.apply _, [func, 1].concat _.rest arguments
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# Returns the first function passed as an argument to the second,
426
# allowing you to adjust arguments, run code before and after, and
427
# conditionally execute the original function.
428
_.wrap = (func, wrapper) ->
429
  -> wrapper.apply wrapper, [func].concat arguments
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431

    
432
# Returns a function that is the composition of a list of functions, each
433
# consuming the return value of the function that follows.
434
_.compose = ->
435
  funcs = arguments
436
  ->
437
    args = arguments
438
    for i in [funcs.length - 1..0] by -1
439
      args = [funcs[i].apply(this, args)]
440
    args[0]
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# Object Functions
444
# ----------------
445

    
446
# Retrieve the names of an object's properties.
447
_.keys = nativeKeys or (obj) ->
448
  return _.range 0, obj.length if _.isArray(obj)
449
  key for key, val of obj
450

    
451

    
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# Retrieve the values of an object's properties.
453
_.values = (obj) ->
454
  _.map obj, _.identity
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456

    
457
# Return a sorted list of the function names available in Underscore.
458
_.functions = (obj) ->
459
  _.filter(_.keys(obj), (key) -> _.isFunction(obj[key])).sort()
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461

    
462
# Extend a given object with all of the properties in a source object.
463
_.extend = (obj) ->
464
  for source in _.rest(arguments)
465
    obj[key] = val for key, val of source
466
  obj
467

    
468

    
469
# Create a (shallow-cloned) duplicate of an object.
470
_.clone = (obj) ->
471
  return obj.slice 0 if _.isArray obj
472
  _.extend {}, obj
473

    
474

    
475
# Invokes interceptor with the obj, and then returns obj.
476
# The primary purpose of this method is to "tap into" a method chain,
477
# in order to perform operations on intermediate results within
478
 the chain.
479
_.tap = (obj, interceptor) ->
480
  interceptor obj
481
  obj
482

    
483

    
484
# Perform a deep comparison to check if two objects are equal.
485
_.isEqual = (a, b) ->
486
  # Check object identity.
487
  return true if a is b
488
  # Different types?
489
  atype = typeof(a); btype = typeof(b)
490
  return false if atype isnt btype
491
  # Basic equality test (watch out for coercions).
492
  return true if `a == b`
493
  # One is falsy and the other truthy.
494
  return false if (!a and b) or (a and !b)
495
  # One of them implements an `isEqual()`?
496
  return a.isEqual(b) if a.isEqual
497
  # Check dates' integer values.
498
  return a.getTime() is b.getTime() if _.isDate(a) and _.isDate(b)
499
  # Both are NaN?
500
  return false if _.isNaN(a) and _.isNaN(b)
501
  # Compare regular expressions.
502
  if _.isRegExp(a) and _.isRegExp(b)
503
    return a.source is b.source and
504
           a.global is b.global and
505
           a.ignoreCase is b.ignoreCase and
506
           a.multiline is b.multiline
507
  # If a is not an object by this point, we can't handle it.
508
  return false if atype isnt 'object'
509
  # Check for different array lengths before comparing contents.
510
  return false if a.length and (a.length isnt b.length)
511
  # Nothing else worked, deep compare the contents.
512
  aKeys = _.keys(a); bKeys = _.keys(b)
513
  # Different object sizes?
514
  return false if aKeys.length isnt bKeys.length
515
  # Recursive comparison of contents.
516
  return false for key, val of a when !(key of b) or !_.isEqual(val, b[key])
517
  true
518

    
519

    
520
# Is a given array or object empty?
521
_.isEmpty = (obj) ->
522
  return obj.length is 0 if _.isArray(obj) or _.isString(obj)
523
  return false for own key of obj
524
  true
525

    
526

    
527
# Is a given value a DOM element?
528
_.isElement = (obj) -> obj and obj.nodeType is 1
529

    
530

    
531
# Is a given value an array?
532
_.isArray = nativeIsArray or (obj) -> !!(obj and obj.concat and obj.unshift and not obj.callee)
533

    
534

    
535
# Is a given variable an arguments object?
536
_.isArguments = (obj) -> obj and obj.callee
537

    
538

    
539
# Is the given value a function?
540
_.isFunction = (obj) -> !!(obj and obj.constructor and obj.call and obj.apply)
541

    
542

    
543
# Is the given value a string?
544
_.isString = (obj) -> !!(obj is '' or (obj and obj.charCodeAt and obj.substr))
545

    
546

    
547
# Is a given value a number?
548
_.isNumber = (obj) -> (obj is +obj) or toString.call(obj) is '[object Number]'
549

    
550

    
551
# Is a given value a boolean?
552
_.isBoolean = (obj) -> obj is true or obj is false
553

    
554

    
555
# Is a given value a Date?
556
_.isDate = (obj) -> !!(obj and obj.getTimezoneOffset and obj.setUTCFullYear)
557

    
558

    
559
# Is the given value a regular expression?
560
_.isRegExp = (obj) -> !!(obj and obj.exec and (obj.ignoreCase or obj.ignoreCase is false))
561

    
562

    
563
# Is the given value NaN -- this one is interesting. `NaN != NaN`, and
564
# `isNaN(undefined) == true`, so we make sure it's a number first.
565
_.isNaN = (obj) -> _.isNumber(obj) and window.isNaN(obj)
566

    
567

    
568
# Is a given value equal to null?
569
_.isNull = (obj) -> obj is null
570

    
571

    
572
# Is a given variable undefined?
573
_.isUndefined = (obj) -> typeof obj is 'undefined'
574

    
575

    
576
# Utility Functions
577
# -----------------
578

    
579
# Run Underscore.js in noConflict mode, returning the `_` variable to its
580
# previous owner. Returns a reference to the Underscore object.
581
_.noConflict = ->
582
  root._ = previousUnderscore
583
  this
584

    
585

    
586
# Keep the identity function around for default iterators.
587
_.identity = (value) -> value
588

    
589

    
590
# Run a function `n` times.
591
_.times = (n, iterator, context) ->
592
  iterator.call context, i for i in [0...n]
593

    
594

    
595
# Break out of the middle of an iteration.
596
_.breakLoop = -> throw breaker
597

    
598

    
599
# Add your own custom functions to the Underscore object, ensuring that
600
# they're correctly added to the OOP wrapper as well.
601
_.mixin = (obj) ->
602
  for name in _.functions(obj)
603
    addToWrapper name, _[name] = obj[name]
604

    
605

    
606
# Generate a unique integer id (unique within the entire client session).
607
# Useful for temporary DOM ids.
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idCounter = 0
609
_.uniqueId = (prefix) ->
610
  (prefix or '') + idCounter++
611

    
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# By default, Underscore uses **ERB**-style template delimiters, change the
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# following template settings to use alternative delimiters.
615
_.templateSettings = {
616
  start: '<%'
617
  end: '%>'
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  interpolate: /<%=(.+?)%>/g
619
}
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# JavaScript templating a-la **ERB**, pilfered from John Resig's
623
# *Secrets of the JavaScript Ninja*, page 83.
624
# Single-quote fix from Rick Strahl.
625
# With alterations for arbitrary delimiters, and to preserve whitespace.
626
_.template = (str, data) ->
627
  c = _.templateSettings
628
  endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g")
629
  fn = new Function 'obj',
630
    'var p=[],print=function(){p.push.apply(p,arguments);};' +
631
    'with(obj||{}){p.push(\'' +
632
    str.replace(/\r/g, '\\r')
633
       .replace(/\n/g, '\\n')
634
       .replace(/\t/g, '\\t')
635
       .replace(endMatch,"���")
636
       .split("'").join("\\'")
637
       .split("���").join("'")
638
       .replace(c.interpolate, "',$1,'")
639
       .split(c.start).join("');")
640
       .split(c.end).join("p.push('") +
641
       "');}return p.join('');"
642
  if data then fn(data) else fn
643

    
644

    
645
# Aliases
646
# -------
647

    
648
_.forEach = _.each
649
_.foldl = _.inject = _.reduce
650
_.foldr = _.reduceRight
651
_.select = _.filter
652
_.all = _.every
653
_.any = _.some
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_.contains = _.include
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_.head = _.first
656
_.tail = _.rest
657
_.methods = _.functions
658

    
659

    
660
# Setup the OOP Wrapper
661
# ---------------------
662

    
663
# If Underscore is called as a function, it returns a wrapped object that
664
# can be used OO-style. This wrapper holds altered versions of all the
665
# underscore functions. Wrapped objects may be chained.
666
wrapper = (obj) ->
667
  this._wrapped = obj
668
  this
669

    
670

    
671
# Helper function to continue chaining intermediate results.
672
result = (obj, chain) ->
673
  if chain then _(obj).chain() else obj
674

    
675

    
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# A method to easily add functions to the OOP wrapper.
677
addToWrapper = (name, func) ->
678
  wrapper.prototype[name] = ->
679
    args = _.toArray arguments
680
    unshift.call args, this._wrapped
681
    result func.apply(_, args), this._chain
682

    
683

    
684
# Add all ofthe Underscore functions to the wrapper object.
685
_.mixin _
686

    
687

    
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# Add all mutator Array functions to the wrapper.
689
_.each ['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], (name) ->
690
  method = Array.prototype[name]
691
  wrapper.prototype[name] = ->
692
    method.apply(this._wrapped, arguments)
693
    result(this._wrapped, this._chain)
694

    
695

    
696
# Add all accessor Array functions to the wrapper.
697
_.each ['concat', 'join', 'slice'], (name) ->
698
  method = Array.prototype[name]
699
  wrapper.prototype[name] = ->
700
    result(method.apply(this._wrapped, arguments), this._chain)
701

    
702

    
703
# Start chaining a wrapped Underscore object.
704
wrapper::chain = ->
705
  this._chain = true
706
  this
707

    
708

    
709
# Extracts the result from a wrapped and chained object.
710
wrapper::value = -> this._wrapped
711
</textarea></form>
712
    <script>
713
      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
714
    </script>
715

    
716
    <p><strong>MIME types defined:</strong> <code>text/x-coffeescript</code>.</p>
717

    
718
    <p>The CoffeeScript mode was written by Jeff Pickhardt (<a href="LICENSE">license</a>).</p>
719

    
720
  </body>
721
</html>