jdk/src/share/classes/java/lang/invoke/DirectMethodHandle.java
author jrose
Wed, 23 Mar 2011 23:02:31 -0700
changeset 8822 8145ab9f5f86
parent 8821 jdk/src/share/classes/java/dyn/DirectMethodHandle.java@2836ee97ee27
child 13423 17843fff200d
permissions -rw-r--r--
7012648: move JSR 292 to package java.lang.invoke and adjust names Summary: package and class renaming only; delete unused methods and classes; add @since tags; no code changes Reviewed-by: twisti
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/*
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 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package java.lang.invoke;
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import static java.lang.invoke.MethodHandleNatives.Constants.*;
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/**
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 * The flavor of method handle which emulates invokespecial or invokestatic.
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 * @author jrose
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 */
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class DirectMethodHandle extends MethodHandle {
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    //inherited oop    vmtarget;    // methodOop or virtual class/interface oop
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    private final int  vmindex;     // method index within class or interface
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    { vmindex = VM_INDEX_UNINITIALIZED; }  // JVM may change this
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    // Constructors in this class *must* be package scoped or private.
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    DirectMethodHandle(MethodType mtype, MemberName m, boolean doDispatch, Class<?> lookupClass) {
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        super(mtype);
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        assert(m.isMethod() || !doDispatch && m.isConstructor());
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        if (!m.isResolved())
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            throw new InternalError();
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        MethodHandleNatives.init(this, (Object) m, doDispatch, lookupClass);
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    }
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    boolean isValid() {
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        return (vmindex != VM_INDEX_UNINITIALIZED);
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    }
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}