simple-fixed-length.js (2071B)
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: Simple fixed-length matches 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 Continuation 11 c, and performs the following steps: 12 a. Let d be a Continuation that always returns its State argument as a successful MatchResult. 13 b. Call m(x, d) and let r be its result. 14 c. If r is failure, return failure. 15 d. Let y be r's State. 16 e. Let cap be y's captures List. 17 f. Let xe be x's endIndex. 18 g. Let z be the State (xe, cap). 19 h. Call c(z) and return its result. 20 features: [regexp-lookbehind] 21 includes: [compareArray.js] 22 ---*/ 23 24 assert.sameValue("b".match(/^.(?<=a)/), null, "#1"); 25 assert.sameValue("boo".match(/^f\w\w(?<=\woo)/), null, "#2"); 26 assert.sameValue("fao".match(/^f\w\w(?<=\woo)/), null, "#3"); 27 assert.sameValue("foa".match(/^f\w\w(?<=\woo)/), null, "#4"); 28 29 assert.compareArray("a".match(/^.(?<=a)/), ["a"], "#5"); 30 assert.compareArray("foo1".match(/^f..(?<=.oo)/), ["foo"], "#6"); 31 assert.compareArray("foo2".match(/^f\w\w(?<=\woo)/), ["foo"], "#7"); 32 assert.compareArray("abcdef".match(/(?<=abc)\w\w\w/), ["def"], "#8"); 33 assert.compareArray("abcdef".match(/(?<=a.c)\w\w\w/), ["def"], "#9"); 34 assert.compareArray("abcdef".match(/(?<=a\wc)\w\w\w/), ["def"], "#10"); 35 assert.compareArray("abcdef".match(/(?<=a[a-z])\w\w\w/), ["cde"], "#11"); 36 assert.compareArray("abcdef".match(/(?<=a[a-z][a-z])\w\w\w/), ["def"], "#12"); 37 assert.compareArray("abcdef".match(/(?<=a[a-z]{2})\w\w\w/), ["def"], "#13"); 38 assert.compareArray("abcdef".match(/(?<=a{1})\w\w\w/), ["bcd"], "#14"); 39 assert.compareArray("abcdef".match(/(?<=a{1}b{1})\w\w\w/), ["cde"], "#15"); 40 assert.compareArray("abcdef".match(/(?<=a{1}[a-z]{2})\w\w\w/), ["def"], "#16"); 41 42 reportCompare(0, 0);