/*

 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. 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.  Oracle designates this

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

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package sun.invoke;

import java.lang.invoke.MethodHandle;

/**

 * Private API used inside of java.lang.invoke.MethodHandles.

 * Interface implemented by every object which is produced by

 * {@link java.lang.invoke.MethodHandleProxies#asInterfaceInstance MethodHandleProxies.asInterfaceInstance}.

 * The methods of this interface allow a caller to recover the parameters

 * to {@code asInstance}.

 * This allows applications to repeatedly convert between method handles

 * and SAM objects, without the risk of creating unbounded delegation chains.

 */

public interface WrapperInstance {

    /** Produce or recover a target method handle which is behaviorally

     *  equivalent to the SAM method of this object.

     */

    public MethodHandle getWrapperInstanceTarget();

    /** Recover the SAM type for which this object was created.

     */

    public Class<?> getWrapperInstanceType();

}