// Copyright 2012 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. var proxy_has_x = false; var proxy = new Proxy({}, { get(t, key, receiver) { assertSame('x', key); if (proxy_has_x) { return 19 } return 8; } }); // Test __lookupGetter__/__lookupSetter__ with proxy. assertSame(undefined, Object.prototype.__lookupGetter__.call(proxy, 'foo')); assertSame(undefined, Object.prototype.__lookupSetter__.call(proxy, 'bar')); assertSame(undefined, Object.prototype.__lookupGetter__.call(proxy, '123')); assertSame(undefined, Object.prototype.__lookupSetter__.call(proxy, '456')); // Test __lookupGetter__/__lookupSetter__ with proxy in prototype chain. var object = Object.create(proxy); assertSame(undefined, Object.prototype.__lookupGetter__.call(object, 'foo')); assertSame(undefined, Object.prototype.__lookupSetter__.call(object, 'bar')); assertSame(undefined, Object.prototype.__lookupGetter__.call(object, '123')); assertSame(undefined, Object.prototype.__lookupSetter__.call(object, '456')); // Test inline constructors with proxy as prototype. function F() { this.x = 42 } F.prototype = proxy; var instance = new F(); proxy_has_x = false; assertSame(42, instance.x); delete instance.x; assertSame(8, instance.x); proxy_has_x = true; assertSame(19, instance.x); // Test inline constructors with proxy in prototype chain. function G() { this.x = 42; } G.prototype.__proto__ = proxy; instance = new G(); proxy_has_x = false; assertSame(42, instance.x); delete instance.x; assertSame(8, instance.x); proxy_has_x = true; assertSame(19, instance.x);