/*
 *    Fernflower - The Analytical Java Decompiler
 *    http://www.reversed-java.com
 *
 *    (C) 2008 - 2010, Stiver
 *
 *    This software is NEITHER public domain NOR free software 
 *    as per GNU License. See license.txt for more details.
 *
 *    This software is distributed WITHOUT ANY WARRANTY; without 
 *    even the implied warranty of MERCHANTABILITY or FITNESS FOR 
 *    A PARTICULAR PURPOSE. 
 */

package org.jetbrains.java.decompiler.code;

/*
 *   opc_tableswitch, lookupswitch
 */

public class SwitchInstruction extends Instruction {

	private int[] destinations;

	private int[] values;
	
	private int defaultdest; 
	
	public SwitchInstruction() {}
	
	
	public void initInstruction(InstructionSequence seq) {
		
		int pref = (opcode==CodeConstants.opc_tableswitch?3:2);
		int len = this.getOperands().length - pref;
		defaultdest = seq.getPointerByRelOffset(this.getOperand(0));

		int low = 0; 
		
		if(opcode==CodeConstants.opc_lookupswitch) {
			len/=2;
		} else {
			low = this.getOperand(1);
		}
		
		destinations = new int[len]; 
		values = new int[len];
		
		for(int i=0,k=0;i<len;i++,k++) {
			if(opcode==CodeConstants.opc_lookupswitch){
				values[i] = this.getOperand(pref+k);  
				k++;
			} else {
				values[i] = low+k;
			}
			destinations[i] = seq.getPointerByRelOffset(this.getOperand(pref+k));
		}
	}

	public SwitchInstruction clone() {
		SwitchInstruction newinstr = (SwitchInstruction)super.clone();
		
		newinstr.defaultdest = defaultdest;
		newinstr.destinations = destinations.clone();
		newinstr.values = values.clone();
		
		return newinstr;
	}
	
	public int[] getDestinations() {
		return destinations;
	}

	public void setDestinations(int[] destinations) {
		this.destinations = destinations;
	}

	public int getDefaultdest() {
		return defaultdest;
	}

	public void setDefaultdest(int defaultdest) {
		this.defaultdest = defaultdest;
	}

	public int[] getValues() {
		return values;
	}

	public void setValues(int[] values) {
		this.values = values;
	}
}