Tue, 13 Oct 2015 18:43:30 +0300
Merge
1 /*
2 * Copyright (c) 2014, 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-8051778: support bind on all Nashorn callables
26 *
27 * @test
28 * @run
29 */
31 var bind = Function.prototype.bind;
33 // Bind a POJO method
34 var l = new java.util.ArrayList();
35 var l_add_foo = bind.call(l.add, l, "foo");
36 l_add_foo();
37 print("l=" + l);
39 // Bind a BoundCallable
40 var l_add = bind.call(l.add, l);
41 var l_add_foo2 = bind.call(l_add, null, "foo2");
42 l_add_foo2();
43 print("l=" + l);
45 // Bind a POJO method retrieved from one instance to a different but
46 // compatible instance.
47 var l2 = new java.util.ArrayList();
48 var l2_size = bind.call(l.size, l2);
49 print("l2_size()=" + l2_size());
51 // Bind a Java type object (used as a constructor).
52 var construct_two = bind.call(java.lang.Integer, null, 2);
53 print("Bound Integer(2) constructor: " + new construct_two())
55 // Bind a @FunctionalInterface proxying to an object literal. NOTE: the
56 // expected value of this.a is always "original" and never "bound". This
57 // might seem counterintuitive, but we are not binding the apply()
58 // function of the object literal that defines the BiFunction behaviour,
59 // we are binding the SAM proxy object instead, and it is always
60 // forwarding to the apply() function with "this" set to the object
61 // literal. Basically, binding "this" for SAM proxies is useless; only
62 // binding arguments makes sense.
63 var f1 = new java.util.function.BiFunction() {
64 apply: function(x, y) {
65 return "BiFunction with literal: " + this.a + ", " + x + ", " + y;
66 },
67 a: "unbound"
68 };
69 print((bind.call(f1, {a: "bound"}))(1, 2))
70 print((bind.call(f1, {a: "bound"}, 3))(4))
71 print((bind.call(f1, {a: "bound"}, 5, 6))())
73 // Bind a @FunctionalInterface proxying to a function. With the same
74 // reasoning as above (binding the proxy vs. binding the JS function),
75 // the value of this.a will always be undefined, and never "bound".
76 var f2 = new java.util.function.BiFunction(
77 function(x, y) {
78 return "BiFunction with function: " + this.a + ", " + x + ", " + y;
79 }
80 );
81 print((bind.call(f2, {a: "bound"}))(7, 8))
82 print((bind.call(f2, {a: "bound"}, 9))(10))
83 print((bind.call(f2, {a: "bound"}, 11, 12))())