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Edit File: regexp-string-methods.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. // Regexp shouldn't use String.prototype.slice() var s = new String("foo"); assertEquals("f", s.slice(0,1)); String.prototype.slice = function() { return "x"; }; assertEquals("x", s.slice(0,1)); assertEquals(["g"], /g/.exec("gg")); // Regexp shouldn't use String.prototype.charAt() var f1 = new RegExp("f", "i"); assertEquals(["F"], f1.exec("F")); assertEquals("f", "foo".charAt(0)); String.prototype.charAt = function(idx) { return 'g'; }; assertEquals("g", "foo".charAt(0)); var f2 = new RegExp("[g]", "i"); assertEquals(["G"], f2.exec("G")); assertTrue(f2.ignoreCase); // On the other hand test is defined in a semi-coherent way as a call to exec. // 15.10.6.3 // We match other browsers in using the original value of RegExp.prototype.exec. // I.e., RegExp.prototype.test shouldn't use the current value of // RegExp.prototype.exec. RegExp.prototype.exec = function(string) { return 'x'; }; assertFalse(/f/.test('x'));