kotovalexarian-likes-github/jashkenas--coffeescript
1
0
Fork 0
mirror of https://github.com/jashkenas/coffeescript.git synced 2022-11-09 12:23:24 -05:00
Code Releases Activity

Self-compiler can compile splats.

Browse source
This commit is contained in:
Jeremy Ashkenas 2010-02-09 21:44:34 -05:00
parent ae4f6309e8
commit fd80d784f4
4 changed files with 41 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
lib/coffee_script/nodes.js
View file

@ -1,5 +1,5 @@
(function(){
var AccessorNode, ArrayNode, AssignNode, CallNode, ClosureNode, CodeNode, CommentNode, Expressions, ExtendsNode, IndexNode, LiteralNode, Node, ObjectNode, PushNode, RangeNode, ReturnNode, SliceNode, TAB, TRAILING_WHITESPACE, ThisNode, ValueNode, any, compact, del, dup, flatten, inherit, merge, statement;
var AccessorNode, ArrayNode, AssignNode, CallNode, ClosureNode, CodeNode, CommentNode, Expressions, ExtendsNode, IndexNode, LiteralNode, Node, ObjectNode, PushNode, RangeNode, ReturnNode, SliceNode, SplatNode, TAB, TRAILING_WHITESPACE, ThisNode, ValueNode, any, compact, del, dup, flatten, inherit, merge, statement;
var __hasProp = Object.prototype.hasOwnProperty;
process.mixin(require('./scope'));
// The abstract base class for all CoffeeScript nodes.
@ -980,4 +980,22 @@
return true;
}
}));
// A splat, either as a parameter to a function, an argument to a call,
// or in a destructuring assignment.
SplatNode = (exports.SplatNode = inherit(Node, {
constructor: function constructor(name) {
this.children = [(this.name = name)];
return this;
},
compile_node: function compile_node(o) {
return this.index ? this.compile_param(o) : this.name.compile(o);
},
compile_param: function compile_param(o) {
o.scope.find(this.name);
return this.name + ' = Array.prototype.slice.call(arguments, ' + this.index + ')';
},
compile_value: function compile_value(o, name, index) {
return "Array.prototype.slice.call(" + this.name + ', ' + this.index + ')';
}
}));
})();

4
lib/coffee_script/parser.js
View file

@ -196,8 +196,8 @@
// A Parameter (or ParamSplat) in a function definition.
Param: [o("PARAM", function() {
return yytext;
}), o("PARAM . . .", function() {
return new SplatNode(yytext);
}), o("Param . . .", function() {
return new SplatNode($1);
})
],
// A regular splat.

19
src/nodes.coffee
View file

@ -691,6 +691,25 @@ CodeNode: exports.CodeNode: inherit Node, {
}
# A splat, either as a parameter to a function, an argument to a call,
# or in a destructuring assignment.
SplatNode: exports.SplatNode: inherit Node, {
constructor: (name) ->
@children: [@name: name]
this
compile_node: (o) ->
if @index then @compile_param(o) else @name.compile(o)
compile_param: (o) ->
o.scope.find @name
@name + ' = Array.prototype.slice.call(arguments, ' + @index + ')'
compile_value: (o, name, index) ->
"Array.prototype.slice.call(" + @name + ', ' + @index + ')'
}

2
src/parser.coffee
View file

@ -221,7 +221,7 @@ grammar: {
# A Parameter (or ParamSplat) in a function definition.
Param: [
o "PARAM", -> yytext
o "PARAM . . .", -> new SplatNode(yytext)
o "Param . . .", -> new SplatNode($1)
]
# A regular splat.