1 /*

     2  * Copyright (c) 2010, 2013, 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  */

    23 

    24 /**

    25  * JDK-8014785: Ability to extend global instance by binding properties of another object

    26  *

    27  * @test

    28  * @run

    29  */

    30 

    31 var obj = { x: 34, y: 100 };

    32 var foo = {}

    33 

    34 // bind properties of "obj" to "foo" obj

    35 Object.bindProperties(foo, obj);

    36 

    37 // now we can access/write on foo properties

    38 print("foo.x = " + foo.x); // prints obj.x which is 34

    39 

    40 // update obj.x via foo.x

    41 foo.x = "hello";

    42 print("obj.x = " + obj.x); // prints "hello" now

    43 

    44 obj.x = 42;   // foo.x also becomes 42

    45 print("obj.x = " + obj.x); // prints 42

    46 print("foo.x = " + foo.x); // prints 42

    47 

    48 // now bind a mirror object to an object

    49 var obj = loadWithNewGlobal({

    50   name: "test",

    51   script: "obj = { x: 33, y: 'hello' }"

    52 });

    53 

    54 Object.bindProperties(this, obj);

    55 print("x = " + x); // prints 33

    56 print("y = " + y); // prints "hello"

    57 

    58 x = Math.PI;               // changes obj.x to Math.PI

    59 print("obj.x = " +obj.x);  // prints Math.PI

    60 

    61 obj.y = 32;

    62 print("y = " + y);  // should print 32