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 21 package com.sun.org.apache.bcel.internal.classfile; 22 23 24 25 import com.sun.org.apache.bcel.internal.Constants; 26 import java.io.*; 27 28 /** 29 * This class is derived from the abstract 30 * <A HREF="com.sun.org.apache.bcel.internal.classfile.Constant.html">Constant</A> class 31 * and represents a reference to an int object. 32 * 33 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 34 * @see Constant 35 */ 36 public final class ConstantInteger extends Constant implements ConstantObject { 37 private int bytes; 38 39 /** 40 * @param bytes Data 41 */ 42 public ConstantInteger(int bytes) 43 { 44 super(Constants.CONSTANT_Integer); 45 this.bytes = bytes; 46 } 47 48 /** 49 * Initialize from another object. 50 */ 51 public ConstantInteger(ConstantInteger c) { 52 this(c.getBytes()); 53 } 54 55 /** 56 * Initialize instance from file data. 57 * 58 * @param file Input stream 59 * @throws IOException 60 */ 61 ConstantInteger(DataInputStream file) throws IOException 62 { 63 this(file.readInt()); 64 } 65 66 /** 67 * Called by objects that are traversing the nodes of the tree implicitely 68 * defined by the contents of a Java class. I.e., the hierarchy of methods, 69 * fields, attributes, etc. spawns a tree of objects. 70 * 71 * @param v Visitor object 72 */ 73 public void accept(Visitor v) { 74 v.visitConstantInteger(this); 75 } 76 77 /** 78 * Dump constant integer to file stream in binary format. 79 * 80 * @param file Output file stream 81 * @throws IOException 82 */ 83 public final void dump(DataOutputStream file) throws IOException 84 { 85 file.writeByte(tag); 86 file.writeInt(bytes); 87 } 88 89 /** 90 * @return data, i.e., 4 bytes. 91 */ 92 public final int getBytes() { return bytes; } 93 94 /** 95 * @param bytes. 96 */ 97 public final void setBytes(int bytes) { 98 this.bytes = bytes; 99 } 100 101 /** 102 * @return String representation. 103 */ 104 public final String toString() { 105 return super.toString() + "(bytes = " + bytes + ")"; 106 } 107 108 /** @return Integer object 109 */ 110 public Object getConstantValue(ConstantPool cp) { 111 return bytes; 112 } 113 }