/*******************************************************************************
* Copyright (c) 2002 - 2006 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package com.ibm.wala.ssa;
/**
*/
public abstract class SSAAbstractUnaryInstruction extends SSAInstruction {
protected final int result;
protected final int val;
protected SSAAbstractUnaryInstruction(int iindex, int result, int val) {
super(iindex);
this.result = result;
this.val = val;
}
/**
* @see com.ibm.wala.ssa.SSAInstruction#getDef()
*/
@Override
public boolean hasDef() {
return true;
}
@Override
public int getDef() {
return result;
}
@Override
public int getDef(int i) {
assert i == 0;
return result;
}
/**
* @see com.ibm.wala.ssa.SSAInstruction#getNumberOfUses()
*/
@Override
public int getNumberOfDefs() {
return 1;
}
@Override
public int getNumberOfUses() {
return 1;
}
/**
* @see com.ibm.wala.ssa.SSAInstruction#getUse(int)
*/
@Override
public int getUse(int j) {
assert j == 0;
return val;
}
@Override
public int hashCode() {
return val * 1663 ^ result * 4027;
}
/*
* @see com.ibm.wala.ssa.Instruction#isFallThrough()
*/
@Override
public boolean isFallThrough() {
return true;
}
}