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