/*******************************************************************************
* 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.shrikeBT;
/**
* This class represents instanceof instructions.
*/
public final class InstanceofInstruction extends Instruction implements IInstanceofInstruction {
final private String type;
protected InstanceofInstruction(String type) {
super(OP_instanceof);
this.type = type;
if (type == null) {
throw new IllegalArgumentException("null type");
}
}
public static InstanceofInstruction make(String type) {
return new InstanceofInstruction(type);
}
@Override
public boolean equals(Object o) {
if (o instanceof InstanceofInstruction) {
InstanceofInstruction i = (InstanceofInstruction) o;
return i.type.equals(type);
} else {
return false;
}
}
@Override
public int hashCode() {
return 31980190 + type.hashCode();
}
@Override
public int getPoppedCount() {
return 1;
}
@Override
public String getType() {
return type;
}
@Override
public String getPushedType(String[] types) {
return TYPE_boolean;
}
@Override
public byte getPushedWordSize() {
return 1;
}
@Override
public void visit(IInstruction.Visitor v) throws IllegalArgumentException {
if (v == null) {
throw new IllegalArgumentException();
}
v.visitInstanceof(this);
}
@Override
public String toString() {
return "Instanceof(" + type + ")";
}
@Override
public boolean isPEI() {
return false;
}
@Override
public boolean firstClassType() {
return false;
}
}