1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.generic; 23 24 25 /** 26 * Super class for stack operations like DUP and POP. 27 * 28 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 29 */ 30 public abstract class StackInstruction extends Instruction { 31 /** 32 * Empty constructor needed for the Class.newInstance() statement in 33 * Instruction.readInstruction(). Not to be used otherwise. 34 */ 35 StackInstruction() {} 36 37 /** 38 * @param opcode instruction opcode 39 */ 40 protected StackInstruction(short opcode) { 41 super(opcode, (short)1); 42 } 43 44 /** @return Type.UNKNOWN 45 */ 46 public Type getType(ConstantPoolGen cp) { 47 return Type.UNKNOWN; 48 } 49 }