/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.vm.compiler.ir.quad;
import java.util.Arrays;
import org.jnode.vm.compiler.ir.CodeGenerator;
import org.jnode.vm.compiler.ir.IRBasicBlock;
import org.jnode.vm.compiler.ir.Operand;
/**
* @author Levente S\u00e1ntha
*/
public class LookupswitchQuad<T> extends Quad<T> {
private IRBasicBlock<T>[] targetBlocks;
private Operand<T> refs[];
private int defaultAddress;
private int[] matchValues;
/**
* @param address
* @param block
* @param defAddress
* @param matchValues
* @param targetAddresses
* @param key
*
*/
public LookupswitchQuad(int address, IRBasicBlock<T> block, int defAddress, int[] matchValues,
int[] targetAddresses,
int key) {
super(address, block);
targetBlocks = new IRBasicBlock[targetAddresses.length + 1];
for (int i = 0; i < targetAddresses.length; i++) {
for (IRBasicBlock<T> succ : block.getSuccessors()) {
if (succ.getStartPC() == targetAddresses[i]) {
targetBlocks[i] = succ;
break;
}
}
if (targetBlocks[i] == null) {
throw new AssertionError("unable to find target block!");
}
}
for (IRBasicBlock<T> succ : block.getSuccessors()) {
if (succ.getStartPC() == defAddress) {
targetBlocks[targetAddresses.length] = succ;
break;
}
}
if (targetBlocks[targetAddresses.length] == null) {
throw new AssertionError("unable to find target block!");
}
this.defaultAddress = defAddress;
this.matchValues = matchValues;
refs = new Operand[]{getOperand(key)};
}
public int[] getMatchValues() {
return matchValues;
}
public int getDefaultAddress() {
return defaultAddress;
}
public Operand getKey() {
return refs[0];
}
// /**
// * @return the start address of the target block
// */
// public int getTargetAddress() {
// return targetBlock.getStartPC();
// }
/**
* @return the target block
*/
public IRBasicBlock<T>[] getTargetBlocks() {
return targetBlocks;
}
@Override
public Operand<T> getDefinedOp() {
return null;
}
@Override
public Operand<T>[] getReferencedOps() {
return refs;
}
@Override
public void doPass2() {
refs[0] = refs[0].simplify();
}
@Override
public void generateCode(CodeGenerator<T> cg) {
cg.generateCodeFor(this);
}
@Override
public String toString() {
return getAddress() + ": lookupswitch(" + refs[0] + ") , def=" + defaultAddress +
", matches=" + Arrays.toString(matchValues) + ", targets=" + Arrays.toString(targetBlocks);
}
}