    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 * Denote an instruction that may produce a value on top of the stack
    022 * (this excludes DUP_X1, e.g.)
    023 *
    024 * @version $Id: StackProducer.java 1747278 2016-06-07 17:28:43Z britter $
    025 */
    026public interface StackProducer {
    027
    028    /** @return how many words are produced on stack
    029     */
    030    int produceStack( ConstantPoolGen cpg );
    031}