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 test ensures that regeular expression literals are constants, and so persist over multiple executions"); 25 26 for (var i = 0; i < 2; i++) { 27 currentRegExp = /a/; 28 if (i) 29 shouldBeFalse("currentRegExp === lastRegExp"); 30 lastRegExp = currentRegExp; 31 } 32 33 function test1() { 34 for (var i = 0; i < 2; i++) { 35 currentRegExp = /a/; 36 if (i) 37 shouldBeFalse("currentRegExp === lastRegExp"); 38 lastRegExp = currentRegExp; 39 } 40 } 41 test1(); 42 43 function returnRegExpLiteral() { return /a/ } 44 45 shouldBeFalse("returnRegExpLiteral() === returnRegExpLiteral()"); 46 47 function returnConditionalRegExpLiteral(first) { 48 if (first) 49 return /a/; 50 return /a/; 51 } 52 53 shouldBeFalse("returnConditionalRegExpLiteral(true) === returnConditionalRegExpLiteral(true)"); 54 shouldBeFalse("returnConditionalRegExpLiteral(false) === returnConditionalRegExpLiteral(false)"); 55 shouldBeFalse("returnConditionalRegExpLiteral(true) === returnConditionalRegExpLiteral(false)"); 56 returnRegExpLiteral().someAddedProperty = true; 57 shouldBeUndefined("returnRegExpLiteral().someAddedProperty"); 58
