jdk8-mips64-public/nashorn: test/script/basic/JDK-8134609.js@1df40fe54cd6

     1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    24 /**

    25  * JDK-8134609: Allow constructors with same prototoype map to share the allocator map

    26  *

    27  * @test

    28  * @run

    29  * @fork

    30  * @option -Dnashorn.debug

    31  */

    33 function createProto(members) {

    34     function P() {

    35         for (var id in members) {

    36             if (members.hasOwnProperty(id)) {

    37                 this[id] = members[id];

    38             }

    39         }

    40         return this;

    41     }

    42     return new P();

    43 }

    45 function createSubclass(prototype, members) {

    46     function C() {

    47         for (var id in members) {

    48             if (members.hasOwnProperty(id)) {

    49                 this[id] = members[id];

    50             }

    51         }

    52         return this;

    53     }

    55     C.prototype = prototype;

    57     return new C();

    58 }

    60 function assertP1(object, value) {

    61     Assert.assertTrue(object.p1 === value);

    62 }

    64 // First prototype will have non-shared proto-map. Second and third will be shared.

    65 var proto0 = createProto({p1: 0, p2: 1});

    66 var proto1 = createProto({p1: 1, p2: 2});

    67 var proto2 = createProto({p1: 2, p2: 3});

    69 Assert.assertTrue(Debug.map(proto1) === Debug.map(proto2));

    71 assertP1(proto1, 1);

    72 assertP1(proto2, 2);

    74 // First instantiation will have a non-shared prototype map, from the second one

    75 // maps will be shared until a different proto map comes along.

    76 var child0 = createSubclass(proto1, {c1: 1, c2: 2});

    77 var child1 = createSubclass(proto2, {c1: 2, c2: 3});

    78 var child2 = createSubclass(proto1, {c1: 3, c2: 4});

    79 var child3 = createSubclass(proto2, {c1: 1, c2: 2});

    80 var child4 = createSubclass(proto0, {c1: 3, c2: 2});

    82 Assert.assertTrue(Debug.map(child1) === Debug.map(child2));

    83 Assert.assertTrue(Debug.map(child1) === Debug.map(child3));

    84 Assert.assertTrue(Debug.map(child3) !== Debug.map(child4));

    86 assertP1(child1, 2);

    87 assertP1(child2, 1);

    88 assertP1(child3, 2);

    89 assertP1(child4, 0);

    91 Assert.assertTrue(delete proto2.p1);

    93 assertP1(child3, undefined);

    94 assertP1(child2, 1);

    95 Assert.assertTrue(Debug.map(child1) !== Debug.map(child3));

Mercurial > jdk8-mips64-public > nashorn / file revision