Revert r11496.

test/mjsunit/accessor-map-sharing.js

-// 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.
-
-// Flags: --allow-natives-syntax
-
-// Handy abbreviations.
-var dp = Object.defineProperty;
-var gop = Object.getOwnPropertyDescriptor;
-
-function getter() { return 111; }
-function setter(x) { print(222); }
-function anotherGetter() { return 333; }
-function anotherSetter(x) { print(444); }
-var obj1, obj2;
-
-// Two objects with the same getter.
-obj1 = {};
-dp(obj1, "alpha", { get: getter });
-obj2 = {};
-dp(obj2, "alpha", { get: getter });
-assertTrue(%HaveSameMap(obj1, obj2));
-
-// Two objects with the same getter, oldskool.
-obj1 = {};
-obj1.__defineGetter__("bravo", getter);
-assertEquals(getter, obj1.__lookupGetter__("bravo"));
-obj2 = {};
-obj2.__defineGetter__("bravo", getter);
-assertEquals(getter, obj2.__lookupGetter__("bravo"));
-assertTrue(%HaveSameMap(obj1, obj2));
-
-// Two objects with the same setter.
-obj1 = {};
-dp(obj1, "charlie", { set: setter });
-obj2 = {};
-dp(obj2, "charlie", { set: setter });
-assertTrue(%HaveSameMap(obj1, obj2));
-
-// Two objects with the same setter, oldskool.
-obj1 = {};
-obj1.__defineSetter__("delta", setter);
-assertEquals(setter, obj1.__lookupSetter__("delta"));
-obj2 = {};
-obj2.__defineSetter__("delta", setter);
-assertEquals(setter, obj2.__lookupSetter__("delta"));
-assertTrue(%HaveSameMap(obj1, obj2));
-
-// Two objects with the same getter and setter.
-obj1 = {};
-dp(obj1, "foxtrot", { get: getter, set: setter });
-obj2 = {};
-dp(obj2, "foxtrot", { get: getter, set: setter });
-assertTrue(%HaveSameMap(obj1, obj2));
-
-// Two objects with the same getter and setter, set separately.
-obj1 = {};
-dp(obj1, "golf", { get: getter, configurable: true });
-dp(obj1, "golf", { set: setter, configurable: true });
-obj2 = {};
-dp(obj2, "golf", { get: getter, configurable: true });
-dp(obj2, "golf", { set: setter, configurable: true });
-assertTrue(%HaveSameMap(obj1, obj2));
-
-// Two objects with the same getter and setter, set separately, oldskool.
-obj1 = {};
-obj1.__defineGetter__("hotel", getter);
-obj1.__defineSetter__("hotel", setter);
-obj2 = {};
-obj2.__defineGetter__("hotel", getter);
-obj2.__defineSetter__("hotel", setter);
-assertTrue(%HaveSameMap(obj1, obj2));
-
-// Attribute-only change, shouldn't affect previous descriptor properties.
-obj1 = {};
-dp(obj1, "india", { get: getter, configurable: true, enumerable: true });
-assertEquals(getter, gop(obj1, "india").get);
-assertTrue(gop(obj1, "india").configurable);
-assertTrue(gop(obj1, "india").enumerable);
-dp(obj1, "india", { enumerable: false });
-assertEquals(getter, gop(obj1, "india").get);
-assertTrue(gop(obj1, "india").configurable);
-assertFalse(gop(obj1, "india").enumerable);
-
-// Attribute-only change, shouldn't affect objects with previously shared maps.
-obj1 = {};
-dp(obj1, "juliet", { set: setter, configurable: true, enumerable: false });
-assertEquals(setter, gop(obj1, "juliet").set);
-assertTrue(gop(obj1, "juliet").configurable);
-assertFalse(gop(obj1, "juliet").enumerable);
-obj2 = {};
-dp(obj2, "juliet", { set: setter, configurable: true, enumerable: false });
-assertEquals(setter, gop(obj2, "juliet").set);
-assertTrue(gop(obj2, "juliet").configurable);
-assertFalse(gop(obj2, "juliet").enumerable);
-dp(obj1, "juliet", { set: setter, configurable: false, enumerable: true });
-assertEquals(setter, gop(obj1, "juliet").set);
-assertFalse(gop(obj1, "juliet").configurable);
-assertTrue(gop(obj1, "juliet").enumerable);
-assertEquals(setter, gop(obj2, "juliet").set);
-assertTrue(gop(obj2, "juliet").configurable);
-assertFalse(gop(obj2, "juliet").enumerable);
-
-// Two objects with the different getters.
-obj1 = {};
-dp(obj1, "kilo", { get: getter });
-obj2 = {};
-dp(obj2, "kilo", { get: anotherGetter });
-assertEquals(getter, gop(obj1, "kilo").get);
-assertEquals(anotherGetter, gop(obj2, "kilo").get);
-assertFalse(%HaveSameMap(obj1, obj2));
-
-// Two objects with the same getters and different setters.
-obj1 = {};
-dp(obj1, "lima", { get: getter, set: setter });
-obj2 = {};
-dp(obj2, "lima", { get: getter, set: anotherSetter });
-assertEquals(setter, gop(obj1, "lima").set);
-assertEquals(anotherSetter, gop(obj2, "lima").set);
-assertFalse(%HaveSameMap(obj1, obj2));
-
-// Even 'undefined' is a kind of getter.
-obj1 = {};
-dp(obj1, "mike", { get: undefined });
-assertTrue("mike" in obj1);
-assertEquals(undefined, gop(obj1, "mike").get);
-assertEquals(undefined, obj1.__lookupGetter__("mike"));
-assertEquals(undefined, gop(obj1, "mike").set);
-assertEquals(undefined, obj1.__lookupSetter__("mike"));
-
-// Even 'undefined' is a kind of setter.
-obj1 = {};
-dp(obj1, "november", { set: undefined });
-assertTrue("november" in obj1);
-assertEquals(undefined, gop(obj1, "november").get);
-assertEquals(undefined, obj1.__lookupGetter__("november"));
-assertEquals(undefined, gop(obj1, "november").set);
-assertEquals(undefined, obj1.__lookupSetter__("november"));
-
-// Redefining a data property.
-obj1 = {};
-obj1.oscar = 12345;
-dp(obj1, "oscar", { set: setter });
-assertEquals(setter, gop(obj1, "oscar").set);
-
-// Re-adding the same getter/attributes pair.
-obj1 = {};
-dp(obj1, "papa", { get: getter, configurable: true });
-dp(obj1, "papa", { get: getter, set: setter, configurable: true });
-assertEquals(getter, gop(obj1, "papa").get);
-assertEquals(setter, gop(obj1, "papa").set);
-assertTrue(gop(obj1, "papa").configurable);
-assertFalse(gop(obj1, "papa").enumerable);