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// Test that setter accessors added to the prototype chain are called 29// when setting properties. 30 31// Test that accessors added to the prototype chain are called 32// eventhough there are inline caches for setting the property 33 34function F() { 35 this.x = 42; 36 this.y = 87; 37} 38 39// Force the inline caches to monomorphic state. 40new F(); new F(); 41 42// Add a setter for x to Object.prototype and make sure it gets 43// called. 44var result_x; 45Object.prototype.__defineSetter__('x', function(value) { result_x = value; }); 46var f = new F(); 47assertEquals(42, result_x); 48assertTrue(typeof f.x == 'undefined'); 49 50// Add a setter for y by changing the prototype of f and make sure 51// that gets called too. 52var result_y; 53var proto = new Object(); 54proto.__defineSetter__('y', function (value) { result_y = value; }); 55var f = new F(); 56f.y = undefined; 57f.__proto__ = proto; 58F.call(f); 59assertEquals(87, result_y); 60assertTrue(typeof f.y == 'undefined'); 61 62 63// Test the same issue in the runtime system. Make sure that 64// accessors added to the prototype chain are called instead of 65// following map transitions. 66// 67// Create two objects. 68var result_z; 69var o1 = new Object(); 70var o2 = new Object(); 71// Add a z property to o1 to create a map transition. 72o1.z = 32; 73// Add a z accessor in the prototype chain for o1 and o2. 74Object.prototype.__defineSetter__('z', function(value) { result_z = value; }); 75// The accessor should be called for o2. 76o2.z = 27; 77assertEquals(27, result_z); 78assertTrue(typeof o2.z == 'undefined'); 79 80