attila@1110: /*
sundar@1482:  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
attila@1110:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
sundar@1482:  *
attila@1110:  * This code is free software; you can redistribute it and/or modify it
attila@1110:  * under the terms of the GNU General Public License version 2 only, as
attila@1110:  * published by the Free Software Foundation.
sundar@1482:  *
attila@1110:  * This code is distributed in the hope that it will be useful, but WITHOUT
attila@1110:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
attila@1110:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
attila@1110:  * version 2 for more details (a copy is included in the LICENSE file that
attila@1110:  * accompanied this code).
sundar@1482:  *
attila@1110:  * You should have received a copy of the GNU General Public License version
attila@1110:  * 2 along with this work; if not, write to the Free Software Foundation,
attila@1110:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
sundar@1482:  *
attila@1110:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
attila@1110:  * or visit www.oracle.com if you need additional information or have any
attila@1110:  * questions.
attila@1110:  */
attila@1110: 
attila@1110: /**
attila@1110:  * JDK-8051778: support bind on all Nashorn callables
attila@1110:  *
attila@1110:  * @test
attila@1110:  * @run
attila@1110:  */
attila@1110: 
attila@1110: var bind = Function.prototype.bind;
attila@1110: 
attila@1110: // Bind a POJO method
attila@1110: var l = new java.util.ArrayList();
attila@1110: var l_add_foo = bind.call(l.add, l, "foo");
attila@1110: l_add_foo();
attila@1110: print("l=" + l);
attila@1110: 
attila@1110: // Bind a BoundCallable
attila@1110: var l_add = bind.call(l.add, l);
attila@1110: var l_add_foo2 = bind.call(l_add, null, "foo2");
attila@1110: l_add_foo2();
attila@1110: print("l=" + l);
attila@1110: 
attila@1110: // Bind a POJO method retrieved from one instance to a different but 
attila@1110: // compatible instance.
attila@1110: var l2 = new java.util.ArrayList();
attila@1110: var l2_size = bind.call(l.size, l2);
attila@1110: print("l2_size()=" + l2_size());
attila@1110: 
attila@1110: // Bind a Java type object (used as a constructor).
attila@1110: var construct_two = bind.call(java.lang.Integer, null, 2);
attila@1110: print("Bound Integer(2) constructor: " + new construct_two())
attila@1110: 
attila@1110: // Bind a @FunctionalInterface proxying to an object literal. NOTE: the 
attila@1110: // expected value of this.a is always "original" and never "bound". This
attila@1110: // might seem counterintuitive, but we are not binding the apply()
attila@1110: // function of the object literal that defines the BiFunction behaviour,
attila@1110: // we are binding the SAM proxy object instead, and it is always
attila@1110: // forwarding to the apply() function with "this" set to the object
attila@1110: // literal. Basically, binding "this" for SAM proxies is useless; only
attila@1110: // binding arguments makes sense.
attila@1110: var f1 = new java.util.function.BiFunction() {
attila@1110:     apply: function(x, y) {
attila@1110:         return "BiFunction with literal: " + this.a + ", " + x + ", " + y;
attila@1110:     },
attila@1110:     a: "unbound"
attila@1110: };
attila@1110: print((bind.call(f1, {a: "bound"}))(1, 2))
attila@1110: print((bind.call(f1, {a: "bound"}, 3))(4))
attila@1110: print((bind.call(f1, {a: "bound"}, 5, 6))())
attila@1110: 
attila@1110: // Bind a @FunctionalInterface proxying to a function. With the same 
attila@1110: // reasoning as above (binding the proxy vs. binding the JS function), 
attila@1110: // the value of this.a will always be undefined, and never "bound".
attila@1110: var f2 = new java.util.function.BiFunction(
attila@1110:     function(x, y) {
attila@1110:         return "BiFunction with function: " + this.a + ", " + x + ", " + y;
attila@1110:     }
attila@1110: );
attila@1110: print((bind.call(f2, {a: "bound"}))(7, 8))
attila@1110: print((bind.call(f2, {a: "bound"}, 9))(10))
attila@1110: print((bind.call(f2, {a: "bound"}, 11, 12))())