/* 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.instruction;

import org.ow2.asmdex.Opcodes;
import org.ow2.asmdex.lowLevelUtils.ByteVector;
import org.ow2.asmdex.structureWriter.ConstantPool;

/**
 * Class representing a Debug Instruction Special Opcode.
 * 
 * @author Julien Névo
 */
public class DebugInstructionSpecialOpcode extends DebugInstruction
implements IDebugDifferenceAddressInstruction, IDebugDifferenceLineInstruction {

	/**
	 * The difference in words between the current and next address.
	 */
	private int differenceAddress;
	
	/**
	 * The difference in line between the current and next line.
	 */
	private int differenceLine;
	
	/**
	 * Constructor of a the Debug Instruction Special Opcode.
	 * @param differenceAddress difference in the addresses in words.
	 * @param differenceLine difference in the lines.
	 */
	public DebugInstructionSpecialOpcode(int differenceAddress, int differenceLine) {
		this.differenceAddress = differenceAddress;
		this.differenceLine = differenceLine;
	}

	@Override
	public int getOpcode() {
		return Opcodes.DBG_FIRST_SPECIAL;
	}

	@Override
	public int getDifferenceAddress() {
		return differenceAddress;
	}

	@Override
	public int getDifferenceLine() {
		return differenceLine;
	}
	
	@Override
	public void write(ByteVector out, ConstantPool constantPool) {
		int nb = differenceAddress * Opcodes.DBG_LINE_RANGE + (differenceLine + 4);
		out.putByte(nb + Opcodes.DBG_FIRST_SPECIAL);
	}

	

}