JezK
Edit File: string-match.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. /** * @fileoverview Test String.prototype.match */ function testMatch(name, input, regexp, result, captures, from, to) { var matchResult = input.match(regexp); assertEquals(result, matchResult, name + "-match"); var match = input.substring(from, to); var preMatch = input.substring(0, from); var postMatch = input.substring(to); var lastParen = captures.length > 0 ? captures[captures.length - 1] : ""; if (regexp.global) { // Returns array of matched strings. var lastMatch = matchResult[matchResult.length - 1]; assertEquals(match, lastMatch, name + "-match-string_g"); } else { // Returns array of match and captures. assertEquals(match, matchResult[0], name + "-match-string"); assertEquals(captures.length + 1, matchResult.length, name + "-cap-return"); for (var i = 1; i < matchResult.length; i++) { assertEquals(captures[i - 1], matchResult[i], name + "-cap-return-" + i); } } assertEquals(match, RegExp["$&"], name + "-$&"); assertEquals(match, RegExp.lastMatch, name + "-lastMatch"); assertEquals(undefined, RegExp.$0, name + "-nocapture-10"); for (var i = 1; i <= 9; i++) { if (i <= captures.length) { assertEquals(captures[i - 1], RegExp["$" + i], name + "-capture-" + i); } else { assertEquals("", RegExp["$" + i], name + "-nocapture-" + i); } } assertEquals(undefined, RegExp.$10, name + "-nocapture-10"); assertEquals(input, RegExp.input, name + "-input"); assertEquals(input, RegExp.$input, name + "-$input"); assertEquals(input, RegExp.$_, name + "-$_"); assertEquals(preMatch, RegExp["$`"], name + "-$`"); assertEquals(preMatch, RegExp.leftContext, name + "-leftContex"); assertEquals(postMatch, RegExp["$'"], name + "-$'"); assertEquals(postMatch, RegExp.rightContext, name + "-rightContex"); assertEquals(lastParen, RegExp["$+"], name + "-$+"); assertEquals(lastParen, RegExp.lastParen, name + "-lastParen"); } var stringSample = "A man, a plan, a canal: Panama"; var stringSample2 = "Argle bargle glop glyf!"; var stringSample3 = "abcdefghijxxxxxxxxxx"; // Non-capturing, non-global regexp. var re_nog = /\w+/; testMatch("Nonglobal", stringSample, re_nog, ["A"], [], 0, 1); re_nog.lastIndex = 2; testMatch("Nonglobal-ignore-lastIndex", stringSample, re_nog, ["A"], [], 0, 1); // Capturing non-global regexp. var re_multicap = /(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)/; testMatch("Capture-Nonglobal", stringSample3, re_multicap, ["abcdefghij", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j"], ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"], 0, 10); // Global regexp (also check that capture from before are cleared) var re = /\w+/g; testMatch("Global", stringSample2, re, ["Argle", "bargle", "glop", "glyf"], [], 18, 22); re.lastIndex = 10; testMatch("Global-ignore-lastIndex", stringSample2, re, ["Argle", "bargle", "glop", "glyf"], [], 18, 22); // Capturing global regexp var re_cap = /\w(\w*)/g; testMatch("Capture-Global", stringSample, re_cap, ["A", "man", "a", "plan", "a", "canal", "Panama"], ["anama"], 24, 30); // Atom, non-global var re_atom = /an/; testMatch("Atom", stringSample, re_atom, ["an"], [], 3, 5); // Atom, global var re_atomg = /an/g; testMatch("Global-Atom", stringSample, re_atomg, ["an", "an", "an", "an"], [], 25, 27);