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Edit File: regexp-capture.js
// Copyright 2009 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Tests from http://blog.stevenlevithan.com/archives/npcg-javascript assertEquals(true, /(x)?\1y/.test("y")); assertEquals(["y", undefined], /(x)?\1y/.exec("y")); assertEquals(["y", undefined], /(x)?y/.exec("y")); assertEquals(["y", undefined], "y".match(/(x)?\1y/)); assertEquals(["y", undefined], "y".match(/(x)?y/)); assertEquals(["y"], "y".match(/(x)?\1y/g)); assertEquals(["", undefined, ""], "y".split(/(x)?\1y/)); assertEquals(["", undefined, ""], "y".split(/(x)?y/)); assertEquals(0, "y".search(/(x)?\1y/)); assertEquals("z", "y".replace(/(x)?\1y/, "z")); assertEquals("", "y".replace(/(x)?y/, "$1")); assertEquals("undefined", "y".replace(/(x)?\1y/, function($0, $1){ return String($1); })); assertEquals("undefined", "y".replace(/(x)?y/, function($0, $1){ return String($1); })); assertEquals("undefined", "y".replace(/(x)?y/, function($0, $1){ return $1; })); // See https://bugzilla.mozilla.org/show_bug.cgi?id=476146 assertEquals(["bbc", "b"], /^(b+|a){1,2}?bc/.exec("bbc")); assertEquals(["bbaa", "a", "", "a"], /((\3|b)\2(a)){2,}/.exec("bbaababbabaaaaabbaaaabba"));