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