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better output when trying to force a pure statment to become a return

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Jeremy Ashkenas 2010-07-29 21:33:35 -04:00
parent b18d7fb550
commit d1b17df38c
2 changed files with 9 additions and 3 deletions
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3
lib/nodes.js
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@ -261,6 +261,9 @@
};
__extends(LiteralNode, BaseNode);
LiteralNode.prototype['class'] = 'LiteralNode';
LiteralNode.prototype.makeReturn = function() {
return this.isStatement() ? this : LiteralNode.__superClass__.makeReturn.call(this);
};
LiteralNode.prototype.isStatement = function() {
return this.value === 'break' || this.value === 'continue';
};

9
src/nodes.coffee
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@ -238,6 +238,9 @@ exports.LiteralNode = class LiteralNode extends BaseNode
constructor: (@value) ->
makeReturn: ->
if @isStatement() then this else super()
# Break and continue must be treated as pure statements -- they lose their
# meaning when wrapped in a closure.
isStatement: ->
@ -258,10 +261,10 @@ exports.LiteralNode = class LiteralNode extends BaseNode
# make sense.
exports.ReturnNode = class ReturnNode extends BaseNode
class: 'ReturnNode'
isStatement: -> yes
class: 'ReturnNode'
isStatement: -> yes
isPureStatement: -> yes
children: ['expression']
children: ['expression']
constructor: (@expression) ->