1 // Copyright 2008 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Flags: --allow-natives-syntax 29 30 // Make sure that we can introduce global variables (using 31 // both var and const) that shadow even READ_ONLY variables 32 // in the prototype chain. 33 const NONE = 0; 34 const READ_ONLY = 1; 35 36 // Use DeclareGlobal... 37 %SetProperty(this.__proto__, "a", 1234, NONE); 38 assertEquals(1234, a); 39 eval("var a = 5678;"); 40 assertEquals(5678, a); 41 42 %SetProperty(this.__proto__, "b", 1234, NONE); 43 assertEquals(1234, b); 44 eval("const b = 5678;"); 45 assertEquals(5678, b); 46 47 %SetProperty(this.__proto__, "c", 1234, READ_ONLY); 48 assertEquals(1234, c); 49 eval("var c = 5678;"); 50 assertEquals(5678, c); 51 52 %SetProperty(this.__proto__, "d", 1234, READ_ONLY); 53 assertEquals(1234, d); 54 eval("const d = 5678;"); 55 assertEquals(5678, d); 56 57 // Use DeclareContextSlot... 58 %SetProperty(this.__proto__, "x", 1234, NONE); 59 assertEquals(1234, x); 60 eval("with({}) { var x = 5678; }"); 61 assertEquals(5678, x); 62 63 %SetProperty(this.__proto__, "y", 1234, NONE); 64 assertEquals(1234, y); 65 eval("with({}) { const y = 5678; }"); 66 assertEquals(5678, y); 67 68 %SetProperty(this.__proto__, "z", 1234, READ_ONLY); 69 assertEquals(1234, z); 70 eval("with({}) { var z = 5678; }"); 71 assertEquals(5678, z); 72 73 %SetProperty(this.__proto__, "w", 1234, READ_ONLY); 74 assertEquals(1234, w); 75 eval("with({}) { const w = 5678; }"); 76 assertEquals(5678, w); 77 78 79
