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author | janekptacijarabaci <janekptacijarabaci@seznam.cz> | 2018-03-24 15:54:49 +0100 |
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committer | janekptacijarabaci <janekptacijarabaci@seznam.cz> | 2018-03-24 15:54:49 +0100 |
commit | aae3a117342e8959c074ea9f36cefac772f608d3 (patch) | |
tree | 96c19881d204af47f79738f1af911a79d935b94c /js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js | |
parent | 893a886ea38853a1a3e97bcf135ea3cb616cd69a (diff) | |
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Bug 1343375: Update RegExp.prototype.replace and .match to call ToLength(lastIndex) for non-global RegExp and handle recompilations
[Depends on] Bug 1317397: Implement RegExp.lastIndex changes from ES2017
Diffstat (limited to 'js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js')
-rw-r--r-- | js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js b/js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js new file mode 100644 index 000000000..6cb286b8c --- /dev/null +++ b/js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js @@ -0,0 +1,75 @@ +// Side-effects when calling ToLength(regExp.lastIndex) in +// RegExp.prototype[@@match] for non-global RegExp can recompile the RegExp. + +for (var flag of ["", "y"]) { + var regExp = new RegExp("a", flag); + + regExp.lastIndex = { + valueOf() { + regExp.compile("b"); + return 0; + } + }; + + var result = regExp[Symbol.match]("b"); + assertEq(result !== null, true); +} + +// Recompilation modifies flag: +// Case 1: Adds global flag, validate by checking lastIndex. +var regExp = new RegExp("a", ""); +regExp.lastIndex = { + valueOf() { + // |regExp| is now in global mode, RegExpBuiltinExec should update the + // lastIndex property to reflect last match. + regExp.compile("a", "g"); + return 0; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 1); + +// Case 2: Removes sticky flag with match, validate by checking lastIndex. +var regExp = new RegExp("a", "y"); +regExp.lastIndex = { + valueOf() { + // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the + // lastIndex property. + regExp.compile("a", ""); + regExp.lastIndex = 9000; + return 0; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 9000); + +// Case 3.a: Removes sticky flag without match, validate by checking lastIndex. +var regExp = new RegExp("a", "y"); +regExp.lastIndex = { + valueOf() { + // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the + // lastIndex property. + regExp.compile("b", ""); + regExp.lastIndex = 9001; + return 0; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 0, "Update the expected value to |9001| after fixing 1317397"); + +// Case 3.b: Removes sticky flag without match, validate by checking lastIndex. +var regExp = new RegExp("a", "y"); +regExp.lastIndex = { + valueOf() { + // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the + // lastIndex property. + regExp.compile("b", ""); + regExp.lastIndex = 9002; + return 10000; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 0, "Update the expected value to |9002| after fixing 1317397"); + +if (typeof reportCompare === "function") + reportCompare(true, true); |