Strict mode Passingnon-Strict mode Passing
Features:
- regexp-named-groups
- regexp-lookbehind
// Copyright 2018 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- description: Named groups can be used in conjunction with lookbehind esid: prod-GroupSpecifier features: [regexp-named-groups, regexp-lookbehind] includes: [compareArray.js] ---*/ // Unicode mode assert.compareArray(["f", "c"], "abcdef".match(/(?<=(?<a>\w){3})f/u)); assert.sameValue("c", "abcdef".match(/(?<=(?<a>\w){3})f/u).groups.a); assert.sameValue("b", "abcdef".match(/(?<=(?<a>\w){4})f/u).groups.a); assert.sameValue("a", "abcdef".match(/(?<=(?<a>\w)+)f/u).groups.a); assert.sameValue(null, "abcdef".match(/(?<=(?<a>\w){6})f/u)); assert.compareArray(["f", ""], "abcdef".match(/((?<=\w{3}))f/u)); assert.compareArray(["f", ""], "abcdef".match(/(?<a>(?<=\w{3}))f/u)); assert.compareArray(["f", undefined], "abcdef".match(/(?<!(?<a>\d){3})f/u)); assert.sameValue(null, "abcdef".match(/(?<!(?<a>\D){3})f/u)); assert.compareArray(["f", undefined], "abcdef".match(/(?<!(?<a>\D){3})f|f/u)); assert.compareArray(["f", undefined], "abcdef".match(/(?<a>(?<!\D{3}))f|f/u)); // Non-Unicode mode assert.compareArray(["f", "c"], "abcdef".match(/(?<=(?<a>\w){3})f/)); assert.sameValue("c", "abcdef".match(/(?<=(?<a>\w){3})f/).groups.a); assert.sameValue("b", "abcdef".match(/(?<=(?<a>\w){4})f/).groups.a); assert.sameValue("a", "abcdef".match(/(?<=(?<a>\w)+)f/).groups.a); assert.sameValue(null, "abcdef".match(/(?<=(?<a>\w){6})f/)); assert.compareArray(["f", ""], "abcdef".match(/((?<=\w{3}))f/)); assert.compareArray(["f", ""], "abcdef".match(/(?<a>(?<=\w{3}))f/)); assert.compareArray(["f", undefined], "abcdef".match(/(?<!(?<a>\d){3})f/)); assert.sameValue(null, "abcdef".match(/(?<!(?<a>\D){3})f/)); assert.compareArray(["f", undefined], "abcdef".match(/(?<!(?<a>\D){3})f|f/)); assert.compareArray(["f", undefined], "abcdef".match(/(?<a>(?<!\D{3}))f|f/)); // Even within a lookbehind, properties are created in left to right order assert.compareArray(["fst", "snd"], Object.getOwnPropertyNames( /(?<=(?<fst>.)|(?<snd>.))/u.exec("abcd").groups));