negative.js (1661B)
1 // Copyright (C) 2017 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 esid: sec-assertion 6 description: RegExp negative lookbehind 7 info: | 8 The production Assertion :: (?<!Disjunction) evaluates as follows: 9 1. Evaluate Disjunction with -1 as its direction argument to obtain a Matcher m. 10 2. Return an internal Matcher closure that takes two arguments, a State x and a 11 Continuation c, and performs the following steps: 12 a. Let d be a Continuation that always returns its State argument as a successful 13 MatchResult. 14 b. Call m(x, d) and let r be its result. 15 c. If r is not failure, return failure. 16 d. Call c(x) and return its result. 17 features: [regexp-lookbehind] 18 includes: [compareArray.js] 19 ---*/ 20 21 assert.compareArray("abcdef".match(/(?<!abc)\w\w\w/), ["abc"], "#1"); 22 assert.compareArray("abcdef".match(/(?<!a.c)\w\w\w/), ["abc"], "#2"); 23 assert.compareArray("abcdef".match(/(?<!a\wc)\w\w\w/), ["abc"], "#3"); 24 assert.compareArray("abcdef".match(/(?<!a[a-z])\w\w\w/), ["abc"], "#4"); 25 assert.compareArray("abcdef".match(/(?<!a[a-z]{2})\w\w\w/), ["abc"], "#5"); 26 assert.sameValue("abcdef".match(/(?<!abc)def/), null, "#6"); 27 assert.sameValue("abcdef".match(/(?<!a.c)def/), null, "#7"); 28 assert.sameValue("abcdef".match(/(?<!a\wc)def/), null, "#8"); 29 assert.sameValue("abcdef".match(/(?<!a[a-z][a-z])def/), null, "#9"); 30 assert.sameValue("abcdef".match(/(?<!a[a-z]{2})def/), null, "#10"); 31 assert.sameValue("abcdef".match(/(?<!a{1}b{1})cde/), null, "#11"); 32 assert.sameValue("abcdef".match(/(?<!a{1}[a-z]{2})def/), null, "#12"); 33 34 reportCompare(0, 0);