1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2008 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Flags: --allow-natives-syntax 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Make sure that we can introduce global variables (using 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// both var and const) that shadow even READ_ONLY variables 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// in the prototype chain. 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst NONE = 0; 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockconst READ_ONLY = 1; 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Use DeclareGlobal... 37257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "a", 1234, NONE); 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, a); 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("var a = 5678;"); 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, a); 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 42257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "b", 1234, NONE); 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, b); 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("const b = 5678;"); 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, b); 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 47257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "c", 1234, READ_ONLY); 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, c); 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("var c = 5678;"); 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, c); 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 52257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "d", 1234, READ_ONLY); 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, d); 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("const d = 5678;"); 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, d); 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Use DeclareContextSlot... 58257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "x", 1234, NONE); 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, x); 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("with({}) { var x = 5678; }"); 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, x); 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 63257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "y", 1234, NONE); 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, y); 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("with({}) { const y = 5678; }"); 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, y); 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 68257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "z", 1234, READ_ONLY); 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, z); 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("with({}) { var z = 5678; }"); 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, z); 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 73257744e915dfc84d6d07a6b2accf8402d9ffc708Ben Murdoch%SetProperty(this.__proto__, "w", 1234, READ_ONLY); 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(1234, w); 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("with({}) { const w = 5678; }"); 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(5678, w); 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 79