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 24 description("This page tests toString conversion of RegExp objects, particularly wrt to '/' characters and RegExp.prototype."); 25 26 function 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 36 function testLineTerminator(pattern) 37 { 38 re1 = new RegExp(pattern); 39 40 return /\n|\r|\u2028|\u2029/.test(re1.toString()); 41 } 42 43 shouldBe("RegExp('/').source", '"\\\\/"'); 44 shouldBe("RegExp('').source", '"(?:)"'); 45 shouldBe("RegExp.prototype.source", '"(?:)"'); 46 47 shouldBe("RegExp('/').toString()", '"/\\\\//"'); 48 shouldBe("RegExp('').toString()", '"/(?:)/"'); 49 shouldBe("RegExp.prototype.toString()", '"/(?:)/"'); 50 51 // These strings are equivalent, since the '\' is identity escaping the '/' at the string level. 52 shouldBeTrue('testForwardSlash("^/$", "/");'); 53 shouldBeTrue('testForwardSlash("^\/$", "/");'); 54 // This string passes "^\/$" to the RegExp, so the '/' is escaped in the re! 55 shouldBeTrue('testForwardSlash("^\\/$", "/");'); 56 // These strings pass "^\\/$" and "^\\\/$" respectively to the RegExp, giving one '\' to match. 57 shouldBeTrue('testForwardSlash("^\\\\/$", "\\/");'); 58 shouldBeTrue('testForwardSlash("^\\\\\\/$", "\\/");'); 59 // These strings match two backslashes (the second with the '/' escaped). 60 shouldBeTrue('testForwardSlash("^\\\\\\\\/$", "\\\\/");'); 61 shouldBeTrue('testForwardSlash("^\\\\\\\\\\/$", "\\\\/");'); 62 // Test that nothing goes wrongif there are multiple forward slashes! 63 shouldBeTrue('testForwardSlash("x/x/x", "x\\/x\\/x");'); 64 shouldBeTrue('testForwardSlash("x\\/x/x", "x\\/x\\/x");'); 65 shouldBeTrue('testForwardSlash("x/x\\/x", "x\\/x\\/x");'); 66 shouldBeTrue('testForwardSlash("x\\/x\\/x", "x\\/x\\/x");'); 67 68 shouldBeFalse('testLineTerminator("\\n");'); 69 shouldBeFalse('testLineTerminator("\\\\n");'); 70 shouldBeFalse('testLineTerminator("\\r");'); 71 shouldBeFalse('testLineTerminator("\\\\r");'); 72 shouldBeFalse('testLineTerminator("\\u2028");'); 73 shouldBeFalse('testLineTerminator("\\\\u2028");'); 74 shouldBeFalse('testLineTerminator("\\u2029");'); 75 shouldBeFalse('testLineTerminator("\\\\u2029");'); 76 77 shouldBe("RegExp('[/]').source", "'[/]'"); 78 shouldBe("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. 87 shouldBe("var o = new RegExp(); o.toString() === '/'+o.source+'/' && eval(o.toString()+'.exec(String())')", '[""]'); 88