/*

 * Copyright 2008-2009 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

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

 * by Sun in the LICENSE file that accompanied this code.

 *

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

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

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

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

 * accompanied this code).

 *

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

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

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

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.dyn;

import java.dyn.*;

import static sun.dyn.MethodHandleNatives.Constants.*;

/**

 * The flavor of method handle which emulates invokespecial or invokestatic.

 * @author jrose

 */

class DirectMethodHandle extends MethodHandle {

    //inherited oop    vmtarget;    // methodOop or virtual class/interface oop

    private final int  vmindex;     // method index within class or interface

    { vmindex = VM_INDEX_UNINITIALIZED; }  // JVM may change this

    // Constructors in this class *must* be package scoped or private.

    DirectMethodHandle(MethodType mtype, MemberName m, boolean doDispatch, Class<?> lookupClass) {

        super(Access.TOKEN, mtype);

        assert(m.isMethod() || !doDispatch && m.isConstructor());

        if (!m.isResolved())

            throw new InternalError();

        MethodHandleNatives.init(this, (Object) m, doDispatch, lookupClass);

    }

    boolean isValid() {

        return (vmindex != VM_INDEX_UNINITIALIZED);

    }

}