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Diffstat (limited to 'js/src/tests/test262/built-ins/RegExp/lookBehind/alternations.js')
-rw-r--r-- | js/src/tests/test262/built-ins/RegExp/lookBehind/alternations.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/lookBehind/alternations.js b/js/src/tests/test262/built-ins/RegExp/lookBehind/alternations.js new file mode 100644 index 0000000000..64c4247043 --- /dev/null +++ b/js/src/tests/test262/built-ins/RegExp/lookBehind/alternations.js @@ -0,0 +1,29 @@ +// Copyright (C) 2017 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-assertion +description: Alternations are tried left to right, and we do not backtrack into a lookbehind. +info: | + The production Assertion :: (?<=Disjunction) evaluates as follows: + 1. Evaluate Disjunction with -1 as its direction argument to obtain a Matcher m. + 2. Return an internal Matcher closure that takes two arguments, a State x and a Continuation + c, and performs the following steps: + a. Let d be a Continuation that always returns its State argument as a successful MatchResult. + b. Call m(x, d) and let r be its result. + c. If r is failure, return failure. + d. Let y be r's State. + e. Let cap be y's captures List. + f. Let xe be x's endIndex. + g. Let z be the State (xe, cap). + h. Call c(z) and return its result. +features: [regexp-lookbehind] +includes: [compareArray.js] +---*/ + +assert.compareArray("xabcd".match(/.*(?<=(..|...|....))(.*)/), ["xabcd", "cd", ""], "#1"); +assert.compareArray("xabcd".match(/.*(?<=(xx|...|....))(.*)/), ["xabcd", "bcd", ""], "#2"); +assert.compareArray("xxabcd".match(/.*(?<=(xx|...))(.*)/), ["xxabcd", "bcd", ""], "#3"); +assert.compareArray("xxabcd".match(/.*(?<=(xx|xxx))(.*)/), ["xxabcd", "xx", "abcd"], "#4"); + +reportCompare(0, 0); |