001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 *
017 */
018package org.apache.bcel.generic;
019
020/**
021 * Super class for the IFxxx family of instructions.
022 *
023 */
024public abstract class IfInstruction extends BranchInstruction implements StackConsumer {
025
026    /**
027     * Empty constructor needed for Instruction.readInstruction.
028     * Not to be used otherwise.
029     */
030    IfInstruction() {
031    }
032
033
034    /**
035     * @param opcode opcode of instruction
036     * @param target Target instruction to branch to
037     */
038    protected IfInstruction(final short opcode, final InstructionHandle target) {
039        super(opcode, target);
040    }
041
042
043    /**
044     * @return negation of instruction, e.g. IFEQ.negate() == IFNE
045     */
046    public abstract IfInstruction negate();
047}