non-unicode-references.js (1440B)
1 // Copyright 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 description: Named backreferences in non-Unicode RegExps 6 esid: prod-GroupSpecifier 7 features: [regexp-named-groups] 8 includes: [compareArray.js] 9 ---*/ 10 11 // Named references. 12 assert.compareArray(["bab", "b"], "bab".match(/(?<b>.).\k<b>/)); 13 assert.sameValue(null, "baa".match(/(?<b>.).\k<b>/)); 14 15 // Reference inside group. 16 assert.compareArray(["bab", "b"], "bab".match(/(?<a>\k<a>\w)../)); 17 assert.sameValue("b", "bab".match(/(?<a>\k<a>\w)../).groups.a); 18 19 // Reference before group. 20 assert.compareArray(["bab", "b"], "bab".match(/\k<a>(?<a>b)\w\k<a>/)); 21 assert.sameValue("b", "bab".match(/\k<a>(?<a>b)\w\k<a>/).groups.a); 22 assert.compareArray(["bab", "b", "a"], "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/)); 23 let {a, b} = "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/).groups; 24 assert.sameValue(a, "a"); 25 assert.sameValue(b, "b"); 26 27 assert.compareArray(["bab", "b"], "bab".match(/\k<a>(?<a>b)\w\k<a>/)); 28 assert.compareArray(["bab", "b", "a"], "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/)); 29 30 // Reference properties. 31 assert.sameValue("a", /(?<a>a)(?<b>b)\k<a>/.exec("aba").groups.a); 32 assert.sameValue("b", /(?<a>a)(?<b>b)\k<a>/.exec("aba").groups.b); 33 assert.sameValue(undefined, /(?<a>a)(?<b>b)\k<a>/.exec("aba").groups.c); 34 assert.sameValue(undefined, /(?<a>a)(?<b>b)\k<a>|(?<c>c)/.exec("aba").groups.c); 35 36 reportCompare(0, 0);