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Bug 635005: new RegExp(undefined) works like new RegExp(''). (r=cdleary, a=jst)
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js/src/jit-test/tests/basic/bug513898-regexp.js
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51
js/src/jit-test/tests/basic/bug513898-regexp.js
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/*
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* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/licenses/publicdomain/
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* Contributor: haytjes <hv1989@gmail.com>
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*/
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/* Check the undefined pattern is equivalent to empty string. */
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assertEq(RegExp(undefined).source, '');
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assertEq(RegExp(undefined).global, false);
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assertEq("test".replace(RegExp(undefined), "*"), '*test');
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assertEq(new RegExp(undefined).source, '');
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assertEq(new RegExp(undefined).global, false);
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assertEq('test'.replace(new RegExp(undefined), "*"), '*test');
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/* Global flags. */
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assertEq(new RegExp(undefined, "g").global, true);
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assertEq("test".replace(new RegExp(undefined, "g"), "*"), "*t*e*s*t*");
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assertEq(RegExp(undefined, "g").global, true);
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assertEq("test".replace(RegExp(undefined, "g"), "*"), "*t*e*s*t*");
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/* Undefined flags. */
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var re = new RegExp(undefined, undefined);
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assertEq(re.multiline, false);
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assertEq(re.global, false);
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assertEq(re.ignoreCase, false);
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var re = new RegExp("test", undefined);
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assertEq(re.multiline, false);
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assertEq(re.global, false);
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assertEq(re.ignoreCase, false);
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/* Flags argument that requires toString. */
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function Flags() {};
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Flags.prototype.toString = function dogToString() { return ""; }
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var re = new RegExp(undefined, new Flags());
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assertEq(re.multiline, false);
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assertEq(re.global, false);
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assertEq(re.ignoreCase, false);
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Flags.prototype.toString = function dogToString() { return "gim"; }
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var re = new RegExp(undefined, new Flags());
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assertEq(re.multiline, true);
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assertEq(re.global, true);
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assertEq(re.ignoreCase, true);
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@ -821,10 +821,15 @@ CompileRegExpAndSwap(JSContext *cx, JSObject *obj, uintN argc, Value *argv, Valu
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return true;
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}
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/* Coerce to string and compile. */
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JSString *sourceStr = js_ValueToString(cx, sourceValue);
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if (!sourceStr)
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return false;
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JSString *sourceStr;
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if (sourceValue.isUndefined()) {
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sourceStr = cx->runtime->emptyString;
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} else {
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/* Coerce to string and compile. */
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sourceStr = js_ValueToString(cx, sourceValue);
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if (!sourceStr)
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return false;
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}
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uintN flags = 0;
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if (argc > 1 && !argv[1].isUndefined()) {
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