1// Copyright 2013 the V8 project authors. All rights reserved. 2// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions 6// are met: 7// 1. Redistributions of source code must retain the above copyright 8// notice, this list of conditions and the following disclaimer. 9// 2. Redistributions in binary form must reproduce the above copyright 10// notice, this list of conditions and the following disclaimer in the 11// documentation and/or other materials provided with the distribution. 12// 13// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24description("This page tests toString conversion of RegExp objects, particularly wrt to '/' characters and RegExp.prototype."); 25 26function testForwardSlash(pattern, _string) 27{ 28 string = _string; 29 30 re1 = new RegExp(pattern); 31 re2 = eval(re1.toString()); 32 33 return re1.test(string) && re2.test(string); 34} 35 36function testLineTerminator(pattern) 37{ 38 re1 = new RegExp(pattern); 39 40 return /\n|\r|\u2028|\u2029/.test(re1.toString()); 41} 42 43shouldBe("RegExp('/').source", '"\\\\/"'); 44shouldBe("RegExp('').source", '"(?:)"'); 45shouldBe("RegExp.prototype.source", '"(?:)"'); 46 47shouldBe("RegExp('/').toString()", '"/\\\\//"'); 48shouldBe("RegExp('').toString()", '"/(?:)/"'); 49shouldBe("RegExp.prototype.toString()", '"/(?:)/"'); 50 51// These strings are equivalent, since the '\' is identity escaping the '/' at the string level. 52shouldBeTrue('testForwardSlash("^/$", "/");'); 53shouldBeTrue('testForwardSlash("^\/$", "/");'); 54// This string passes "^\/$" to the RegExp, so the '/' is escaped in the re! 55shouldBeTrue('testForwardSlash("^\\/$", "/");'); 56// These strings pass "^\\/$" and "^\\\/$" respectively to the RegExp, giving one '\' to match. 57shouldBeTrue('testForwardSlash("^\\\\/$", "\\/");'); 58shouldBeTrue('testForwardSlash("^\\\\\\/$", "\\/");'); 59// These strings match two backslashes (the second with the '/' escaped). 60shouldBeTrue('testForwardSlash("^\\\\\\\\/$", "\\\\/");'); 61shouldBeTrue('testForwardSlash("^\\\\\\\\\\/$", "\\\\/");'); 62// Test that nothing goes wrongif there are multiple forward slashes! 63shouldBeTrue('testForwardSlash("x/x/x", "x\\/x\\/x");'); 64shouldBeTrue('testForwardSlash("x\\/x/x", "x\\/x\\/x");'); 65shouldBeTrue('testForwardSlash("x/x\\/x", "x\\/x\\/x");'); 66shouldBeTrue('testForwardSlash("x\\/x\\/x", "x\\/x\\/x");'); 67 68shouldBeFalse('testLineTerminator("\\n");'); 69shouldBeFalse('testLineTerminator("\\\\n");'); 70shouldBeFalse('testLineTerminator("\\r");'); 71shouldBeFalse('testLineTerminator("\\\\r");'); 72shouldBeFalse('testLineTerminator("\\u2028");'); 73shouldBeFalse('testLineTerminator("\\\\u2028");'); 74shouldBeFalse('testLineTerminator("\\u2029");'); 75shouldBeFalse('testLineTerminator("\\\\u2029");'); 76 77shouldBe("RegExp('[/]').source", "'[/]'"); 78shouldBe("RegExp('\\\\[/]').source", "'\\\\[\\\\/]'"); 79 80// See 15.10.6.4 81// The first half of this checks that: 82// Return the String value formed by concatenating the Strings "/", the 83// String value of the source property of this RegExp object, and "/"; 84// The second half checks that: 85// The returned String has the form of a RegularExpressionLiteral that 86// evaluates to another RegExp object with the same behaviour as this object. 87shouldBe("var o = new RegExp(); o.toString() === '/'+o.source+'/' && eval(o.toString()+'.exec(String())')", '[""]'); 88