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removing the <- bind operator from CoffeeScript...

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This commit is contained in:
Jeremy Ashkenas
2010-06-12 11:00:56 -04:00
parent 59e41f195b
commit c2d1ae06c5
11 changed files with 266 additions and 368 deletions
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47
src/nodes.coffee
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@@ -394,7 +394,8 @@ exports.CallNode: class CallNode extends BaseNode
@is_super: variable is 'super'
@variable: if @is_super then null else variable
@args: (args or [])
@compile_splat_arguments: SplatNode.compile_mixed_array <- @, @args
@compile_splat_arguments: (o) ->
SplatNode.compile_mixed_array.call(this, @args, o)
# Tag this invocation as creating a new instance.
new_instance: ->
@@ -440,32 +441,6 @@ exports.CallNode: class CallNode extends BaseNode
meth: "($temp = ${ @variable.source })${ @variable.last }"
"${@prefix()}${meth}.apply($obj, ${ @compile_splat_arguments(o) })"
#### CurryNode
# Binds a context object and a list of arguments to a function,
# returning the bound function. After ECMAScript 5, Prototype.js, and
# Underscore's `bind` functions.
exports.CurryNode: class CurryNode extends CallNode
type: 'CurryNode'
children: ['meth', 'context', 'args']
constructor: (meth, args) ->
@meth: meth
@context: args[0]
@args: (args.slice(1) or [])
@compile_splat_arguments: SplatNode.compile_mixed_array <- @, @args
arguments: (o) ->
for arg in @args
return @compile_splat_arguments(o) if arg instanceof SplatNode
(new ArrayNode(@args)).compile o
compile_node: (o) ->
utility 'slice'
ref: new ValueNode literal utility 'bind'
(new CallNode(ref, [@meth, @context, literal(@arguments(o))])).compile o
#### ExtendsNode
# Node to extend an object's prototype with an ancestor object.
@@ -629,7 +604,8 @@ exports.ArrayNode: class ArrayNode extends BaseNode
constructor: (objects) ->
@objects: objects or []
@compile_splat_literal: SplatNode.compile_mixed_array <- @, @objects
@compile_splat_literal: (o) ->
SplatNode.compile_mixed_array.call(this, @objects, o)
compile_node: (o) ->
o.indent: @idt 1
@@ -862,9 +838,8 @@ exports.CodeNode: class CodeNode extends BaseNode
func: "function(${ params.join(', ') }) {$code${@idt(if @bound then 1 else 0)}}"
func: "($func)" if top and not @bound
return func unless @bound
utility 'slice'
ref: new ValueNode literal utility 'bind'
(new CallNode ref, [literal(func), literal('this')]).compile o
inner: "(function() {\n${@idt(2)}return __func.apply(__this, arguments);\n${@idt(1)}});"
"(function(__this) {\n${@idt(1)}var __func = $func;\n${@idt(1)}return $inner\n$@tab})(this)"
top_sensitive: ->
true
@@ -1418,16 +1393,6 @@ UTILITIES: {
}
"""
# Bind a function to a calling context, optionally including curried arguments.
# See [Underscore's implementation](http://jashkenas.github.com/coffee-script/documentation/docs/underscore.html#section-47).
__bind: """
function(func, obj, args) {
return function() {
return func.apply(obj || {}, args ? args.concat(__slice.call(arguments, 0)) : arguments);
};
}
"""
# Shortcuts to speed up the lookup time for native functions.
__hasProp: 'Object.prototype.hasOwnProperty'
__slice: 'Array.prototype.slice'