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35 lines
1.1 KiB
35 lines
1.1 KiB
/*
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* Development time tests for quantifier capture fixing
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* (branch regexp-quantifier-capture-fix).
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*/
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/*===
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object abcABC ABC A B C
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object abcBC BC undefined B C
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===*/
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function test() {
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/* A 'wipe' instruction is used to wipe saved pointers when a quantifier
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* is re-matched. Values before the wipe must be restored when backtracking,
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* otherwise this fails: the quantified is matched successfully twice, but
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* the third time fails. We must backtrack and return captures from the
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* second round. (This actually worked in Duktape 0.9.0 because quantifier
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* re-matching didn't reset captures, but it worked for the wrong reason.)
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*/
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m = /((a)(b)(c))+/i.exec('abcABCabz');
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print(typeof m, m[0], m[1], m[2], m[3], m[4]);
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/* Same test case but with a small twist. This failed in Duktape 0.9.0:
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* the second capture matches 'a' on the first repetition and is undefined
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* on the second. The final result should be undefined but is 'a' in 0.9.0.
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*/
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m = /((a)?(b)(c))+/i.exec('abcBCbz');
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print(typeof m, m[0], m[1], m[2], m[3], m[4]);
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}
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try {
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test();
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} catch (e) {
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print(e);
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}
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