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raising the precedence level of delete, instanceof, and typeof

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This commit is contained in:
Jeremy Ashkenas
2010-02-09 22:20:04 -05:00
parent 8e3e06a6e9
commit 9339058fc3
7 changed files with 722 additions and 657 deletions
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35
lib/coffee_script/nodes.js
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@@ -1,5 +1,5 @@
(function(){
var AccessorNode, ArrayNode, AssignNode, CallNode, ClosureNode, CodeNode, CommentNode, Expressions, ExtendsNode, IndexNode, LiteralNode, Node, ObjectNode, PushNode, RangeNode, ReturnNode, SliceNode, SplatNode, TAB, TRAILING_WHITESPACE, ThisNode, ValueNode, WhileNode, any, compact, del, dup, flatten, inherit, merge, statement;
var AccessorNode, ArrayNode, AssignNode, CallNode, ClosureNode, CodeNode, CommentNode, Expressions, ExtendsNode, IndexNode, LiteralNode, Node, ObjectNode, OpNode, PushNode, RangeNode, ReturnNode, SliceNode, SplatNode, TAB, TRAILING_WHITESPACE, ThisNode, ValueNode, WhileNode, 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.
@@ -1030,4 +1030,37 @@
}
}));
statement(WhileNode);
// Simple Arithmetic and logical operations. Performs some conversion from
// CoffeeScript operations into their JavaScript equivalents.
OpNode = (exports.OpNode = inherit(Node, {
CONVERSIONS: {
'==': '===',
'!=': '!==',
'and': '&&',
'or': '||',
'is': '===',
'isnt': '!==',
'not': '!'
},
CHAINABLE: ['<', '>', '>=', '<=', '===', '!=='],
ASSIGNMENT: ['||=', '&&=', '?='],
PREFIX_OPERATORS: ['typeof', 'delete'],
constructor: function constructor(operator, first, second, flip) {
this.children = [(this.first = first), (this.second = second)];
this.operator = this.CONVERSIONS[operator] || operator;
this.flip = !!flip;
return this;
},
is_unary: function is_unary() {
return !this.second;
},
is_chainable: function is_chainable() {
return this.CHAINABLE.indexOf(this.operator) >= 0;
},
compile_node: function compile_node(o) {
if (this.is_chainable() && (this.first.unwrap() instanceof OpNode) && this.first.unwrap().is_chainable()) {
return this.compile_chain(o);
}
}
}));
})();