1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 */ 4 /* 5 * Licensed to the Apache Software Foundation (ASF) under one or more 6 * contributor license agreements. See the NOTICE file distributed with 7 * this work for additional information regarding copyright ownership. 8 * The ASF licenses this file to You under the Apache License, Version 2.0 9 * (the "License"); you may not use this file except in compliance with 10 * the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 package com.sun.org.apache.bcel.internal.generic; 21 22 /** 23 * ICONST - Push value between -1, ..., 5, other values cause an exception 24 * 25 * <PRE>Stack: ... -> ..., </PRE> 26 * 27 * @version $Id: ICONST.java 1747278 2016-06-07 17:28:43Z britter $ 28 */ 29 public class ICONST extends Instruction implements ConstantPushInstruction { 30 31 private int value; 32 33 /** 34 * Empty constructor needed for the Class.newInstance() statement in 35 * Instruction.readInstruction(). Not to be used otherwise. 36 */ 37 ICONST() { 38 } 39 40 public ICONST(final int i) { 41 super(com.sun.org.apache.bcel.internal.Const.ICONST_0, (short) 1); 42 if ((i >= -1) && (i <= 5)) { 43 super.setOpcode((short) (com.sun.org.apache.bcel.internal.Const.ICONST_0 + i)); // Even works for i == -1 44 } else { 45 throw new ClassGenException("ICONST can be used only for value between -1 and 5: " + i); 46 } 47 value = i; 48 } 49 50 @Override 51 public Number getValue() { 52 return Integer.valueOf(value); 53 } 54 55 /** 56 * @return Type.INT 57 */ 58 @Override 59 public Type getType(final ConstantPoolGen cp) { 60 return Type.INT; 61 } 62 63 /** 64 * Call corresponding visitor method(s). The order is: Call visitor methods 65 * of implemented interfaces first, then call methods according to the class 66 * hierarchy in descending order, i.e., the most specific visitXXX() call 67 * comes last. 68 * 69 * @param v Visitor object 70 */ 71 @Override 72 public void accept(final Visitor v) { 73 v.visitPushInstruction(this); 74 v.visitStackProducer(this); 75 v.visitTypedInstruction(this); 76 v.visitConstantPushInstruction(this); 77 v.visitICONST(this); 78 } 79 }