src/java.xml/share/classes/com/sun/org/apache/bcel/internal/generic/StackInstruction.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
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package com.sun.org.apache.bcel.internal.generic;

/**
 * Super class for stack operations like DUP and POP.
 *
 */
public abstract class StackInstruction extends Instruction {

    /**
     * Empty constructor needed for Instruction.readInstruction.
     * Not to be used otherwise.
     */
    StackInstruction() {
    }


    /**
     * @param opcode instruction opcode
     */
    protected StackInstruction(final short opcode) {
        super(opcode, (short) 1);
    }


    /** @return Type.UNKNOWN
     */
    public Type getType( final ConstantPoolGen cp ) {
        return Type.UNKNOWN;
    }
}