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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    25 

    26 package jdk.nashorn.internal.objects;

    27 

    28 import jdk.nashorn.internal.runtime.ScriptFunction;

    29 import jdk.nashorn.internal.runtime.ScriptFunctionData;

    30 import jdk.nashorn.internal.runtime.ScriptObject;

    31 import jdk.nashorn.internal.runtime.ScriptRuntime;

    32 

    33 /**

    34  * A {@code ScriptFunctionImpl} subclass for functions created using {@code Function.prototype.bind}. Such functions

    35  * must track their {@code [[TargetFunction]]} property for purposes of correctly implementing {@code [[HasInstance]]};

    36  * see {@link ScriptFunction#isInstance(ScriptObject)}.

    37  */

    38 final class BoundScriptFunctionImpl extends ScriptFunctionImpl {

    39     private final ScriptFunction targetFunction;

    40 

    41     BoundScriptFunctionImpl(final ScriptFunctionData data, final ScriptFunction targetFunction) {

    42         super(data, Global.instance());

    43         setPrototype(ScriptRuntime.UNDEFINED);

    44         this.targetFunction = targetFunction;

    45     }

    46 

    47     @Override

    48     protected ScriptFunction getTargetFunction() {

    49         return targetFunction;

    50     }

    51 }