/* |
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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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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file: |
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* |
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* ASM: a very small and fast Java bytecode manipulation framework |
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* Copyright (c) 2000-2011 INRIA, France Telecom |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the copyright holders nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
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* THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package jdk.internal.org.objectweb.asm; |
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/** |
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* A reference to a field or a method. |
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* |
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* @author Remi Forax |
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* @author Eric Bruneton |
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*/ |
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public final class Handle { |
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/** |
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* The kind of field or method designated by this Handle. Should be {@link Opcodes#H_GETFIELD}, |
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* {@link Opcodes#H_GETSTATIC}, {@link Opcodes#H_PUTFIELD}, {@link Opcodes#H_PUTSTATIC}, {@link |
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* Opcodes#H_INVOKEVIRTUAL}, {@link Opcodes#H_INVOKESTATIC}, {@link Opcodes#H_INVOKESPECIAL}, |
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* {@link Opcodes#H_NEWINVOKESPECIAL} or {@link Opcodes#H_INVOKEINTERFACE}. |
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*/ |
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private final int tag; |
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/** The internal name of the class that owns the field or method designated by this handle. */ |
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private final String owner; |
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/** The name of the field or method designated by this handle. */ |
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private final String name; |
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/** The descriptor of the field or method designated by this handle. */ |
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private final String descriptor; |
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/** Whether the owner is an interface or not. */ |
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private final boolean isInterface; |
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/** |
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* Constructs a new field or method handle. |
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* |
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* @param tag the kind of field or method designated by this Handle. Must be {@link |
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* Opcodes#H_GETFIELD}, {@link Opcodes#H_GETSTATIC}, {@link Opcodes#H_PUTFIELD}, {@link |
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* Opcodes#H_PUTSTATIC}, {@link Opcodes#H_INVOKEVIRTUAL}, {@link Opcodes#H_INVOKESTATIC}, |
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* {@link Opcodes#H_INVOKESPECIAL}, {@link Opcodes#H_NEWINVOKESPECIAL} or {@link |
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* Opcodes#H_INVOKEINTERFACE}. |
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* @param owner the internal name of the class that owns the field or method designated by this |
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* handle. |
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* @param name the name of the field or method designated by this handle. |
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* @param descriptor the descriptor of the field or method designated by this handle. |
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* @deprecated this constructor has been superseded by {@link #Handle(int, String, String, String, |
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* boolean)}. |
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*/ |
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@Deprecated |
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public Handle(final int tag, final String owner, final String name, final String descriptor) { |
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this(tag, owner, name, descriptor, tag == Opcodes.H_INVOKEINTERFACE); |
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} |
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/** |
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* Constructs a new field or method handle. |
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* |
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* @param tag the kind of field or method designated by this Handle. Must be {@link |
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* Opcodes#H_GETFIELD}, {@link Opcodes#H_GETSTATIC}, {@link Opcodes#H_PUTFIELD}, {@link |
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* Opcodes#H_PUTSTATIC}, {@link Opcodes#H_INVOKEVIRTUAL}, {@link Opcodes#H_INVOKESTATIC}, |
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* {@link Opcodes#H_INVOKESPECIAL}, {@link Opcodes#H_NEWINVOKESPECIAL} or {@link |
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* Opcodes#H_INVOKEINTERFACE}. |
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* @param owner the internal name of the class that owns the field or method designated by this |
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* handle. |
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* @param name the name of the field or method designated by this handle. |
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* @param descriptor the descriptor of the field or method designated by this handle. |
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* @param isInterface whether the owner is an interface or not. |
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*/ |
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public Handle( |
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final int tag, |
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final String owner, |
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final String name, |
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final String descriptor, |
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final boolean isInterface) { |
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this.tag = tag; |
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this.owner = owner; |
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this.name = name; |
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this.descriptor = descriptor; |
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this.isInterface = isInterface; |
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} |
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/** |
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* Returns the kind of field or method designated by this handle. |
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* |
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* @return {@link Opcodes#H_GETFIELD}, {@link Opcodes#H_GETSTATIC}, {@link Opcodes#H_PUTFIELD}, |
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* {@link Opcodes#H_PUTSTATIC}, {@link Opcodes#H_INVOKEVIRTUAL}, {@link |
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* Opcodes#H_INVOKESTATIC}, {@link Opcodes#H_INVOKESPECIAL}, {@link |
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* Opcodes#H_NEWINVOKESPECIAL} or {@link Opcodes#H_INVOKEINTERFACE}. |
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*/ |
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public int getTag() { |
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return tag; |
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} |
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/** |
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* Returns the internal name of the class that owns the field or method designated by this handle. |
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* |
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* @return the internal name of the class that owns the field or method designated by this handle. |
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*/ |
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public String getOwner() { |
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return owner; |
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} |
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/** |
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* Returns the name of the field or method designated by this handle. |
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* |
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* @return the name of the field or method designated by this handle. |
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*/ |
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public String getName() { |
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return name; |
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} |
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/** |
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* Returns the descriptor of the field or method designated by this handle. |
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* |
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* @return the descriptor of the field or method designated by this handle. |
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*/ |
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public String getDesc() { |
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return descriptor; |
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} |
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/** |
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* Returns true if the owner of the field or method designated by this handle is an interface. |
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* |
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* @return true if the owner of the field or method designated by this handle is an interface. |
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*/ |
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public boolean isInterface() { |
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return isInterface; |
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} |
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@Override |
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public boolean equals(final Object object) { |
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if (object == this) { |
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return true; |
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} |
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if (!(object instanceof Handle)) { |
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return false; |
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} |
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Handle handle = (Handle) object; |
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return tag == handle.tag |
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&& isInterface == handle.isInterface |
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&& owner.equals(handle.owner) |
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&& name.equals(handle.name) |
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&& descriptor.equals(handle.descriptor); |
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} |
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@Override |
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public int hashCode() { |
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return tag |
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+ (isInterface ? 64 : 0) |
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+ owner.hashCode() * name.hashCode() * descriptor.hashCode(); |
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} |
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/** |
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* Returns the textual representation of this handle. The textual representation is: |
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* |
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* <ul> |
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* <li>for a reference to a class: owner "." name descriptor " (" tag ")", |
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* <li>for a reference to an interface: owner "." name descriptor " (" tag " itf)". |
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* </ul> |
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*/ |
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@Override |
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public String toString() { |
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return owner + '.' + name + descriptor + " (" + tag + (isInterface ? " itf" : "") + ')'; |
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} |
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} |