/* Software Name : AsmDex
 * Version : 1.0
 *
 * Copyright © 2012 France Télécom
 * 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.ow2.asmdex.tree;

import java.util.Map;

import org.ow2.asmdex.MethodVisitor;

/**
 * A node that represents an operation on an array.
 * 
 * @author Julien Névo, based on the ASM framework.
 */
public class ArrayOperationInsnNode extends AbstractInsnNode {

	/**
	 * The value register. May be source or destination register/pair.
	 */
	public int valueRegister;
	
	/**
	 * The array register. 
	 */
	public int arrayRegister;
	
	/**
	 * The index register. 
	 */
	public int indexRegister;
	
	/**
     * Constructs a new {@link ArrayOperationInsnNode}.
     * 
     * @param opcode the opcode of the instruction to be constructed.
     *        This opcode is either AGET(-xxx) or APUT(-xxx).
     * @param valueRegister
     * @param arrayRegister
     * @param indexRegister
     */
    public ArrayOperationInsnNode(final int opcode, final int valueRegister, final int arrayRegister, final int indexRegister) {
        super(opcode);
        this.valueRegister = valueRegister;
        this.arrayRegister = arrayRegister;
        this.indexRegister = indexRegister;
    }
    
    /**
     * Sets the opcode of this instruction.
     * 
     * @param opcode the new instruction opcode. 
     * 		  This opcode is either AGET(-xxx) or APUT(-xxx).
     */
    public void setOpcode(final int opcode) {
        this.opcode = opcode;
    }

	@Override
	public int getType() {
		return ARRAY_OPERATION_INSN;
	}
	
	@Override
	public void accept(MethodVisitor mv) {
		mv.visitArrayOperationInsn(opcode, valueRegister, arrayRegister, indexRegister);
	}

	@Override
	public AbstractInsnNode clone(Map<LabelNode, LabelNode> labels) {
		return new ArrayOperationInsnNode(opcode, valueRegister, arrayRegister, indexRegister);
	}


}