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Fix #597 from UglifyJS

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This commit is contained in:
Dan Onoshko 2015-01-02 01:33:10 +07:00
parent ff5f1ec141
commit 2a31e4a52c
2 changed files with 20 additions and 10 deletions
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20
lib/compress.js
View File

@ -2235,14 +2235,30 @@ Cola.Compressor.MathFuncs = {
case "undefined": case "undefined":
return make_node(Cola.AST_Undefined, self); return make_node(Cola.AST_Undefined, self);
case "NaN": case "NaN":
return make_node(Cola.AST_NaN, self); return make_node(Cola.AST_NaN, self).transform(compressor);
case "Infinity": case "Infinity":
return make_node(Cola.AST_Infinity, self); return make_node(Cola.AST_Infinity, self).transform(compressor);
} }
} }
return self; return self;
}); });
OPT(AST_Infinity, function (self, compressor) {
return make_node(AST_Binary, self, {
operator : '/',
left : make_node(AST_Number, null, {value: 1}),
right : make_node(AST_Number, null, {value: 0})
});
});
OPT(AST_NaN, function (self, compressor) {
return make_node(AST_Binary, self, {
operator : '/',
left : make_node(AST_Number, null, {value: 0}),
right : make_node(AST_Number, null, {value: 0})
});
});
OPT(Cola.AST_Undefined, function(self, compressor){ OPT(Cola.AST_Undefined, function(self, compressor){
if (compressor.option("unsafe")) { if (compressor.option("unsafe")) {
var scope = compressor.find_parent(Cola.AST_Scope); var scope = compressor.find_parent(Cola.AST_Scope);

10
lib/output.js
View File

@ -522,12 +522,6 @@ Cola.OutputStream.prototype.parent = function(n) {
return true; return true;
}); });
PARENS(Cola.AST_NaN, function(output){
var p = output.parent();
if (p instanceof Cola.AST_PropAccess && p.expression === this)
return true;
});
function assign_and_conditional_paren_rules(output) { function assign_and_conditional_paren_rules(output) {
var p = output.parent(); var p = output.parent();
// !(a = false) → true // !(a = false) → true
@ -1081,10 +1075,10 @@ Cola.OutputStream.prototype.parent = function(n) {
}); });
DEFPRINT(Cola.AST_Hole, Cola.noop); DEFPRINT(Cola.AST_Hole, Cola.noop);
DEFPRINT(Cola.AST_Infinity, function(self, output){ DEFPRINT(Cola.AST_Infinity, function(self, output){
output.print("1/0"); output.print("Infinity");
}); });
DEFPRINT(Cola.AST_NaN, function(self, output){ DEFPRINT(Cola.AST_NaN, function(self, output){
output.print("0/0"); output.print("NaN");
}); });
DEFPRINT(Cola.AST_This, function(self, output){ DEFPRINT(Cola.AST_This, function(self, output){
output.print("this"); output.print("this");