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 import com.sun.org.apache.bcel.internal.Constants; 25 import java.io.*; 26 27 /** 28 * This class is derived from the abstract 29 * <A HREF="com.sun.org.apache.bcel.internal.classfile.Constant.html">Constant</A> class 30 * and represents a reference to a long object. 31 * 32 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 33 * @see Constant 34 */ 35 public final class ConstantLong extends Constant implements ConstantObject { 36 private long bytes; 37 38 /** 39 * @param bytes Data 40 */ 41 public ConstantLong(long bytes) 42 { 43 super(Constants.CONSTANT_Long); 44 this.bytes = bytes; 45 } 46 /** 47 * Initialize from another object. 48 */ 49 public ConstantLong(ConstantLong c) { 50 this(c.getBytes()); 51 } 52 /** 53 * Initialize instance from file data. 54 * 55 * @param file Input stream 56 * @throws IOException 57 */ 58 ConstantLong(DataInputStream file) throws IOException 59 { 60 this(file.readLong()); 61 } 62 /** 63 * Called by objects that are traversing the nodes of the tree implicitely 64 * defined by the contents of a Java class. I.e., the hierarchy of methods, 65 * fields, attributes, etc. spawns a tree of objects. 66 * 67 * @param v Visitor object 68 */ 69 public void accept(Visitor v) { 70 v.visitConstantLong(this); 71 } 72 /** 73 * Dump constant long to file stream in binary format. 74 * 75 * @param file Output file stream 76 * @throws IOException 77 */ 78 public final void dump(DataOutputStream file) throws IOException 79 { 80 file.writeByte(tag); 81 file.writeLong(bytes); 82 } 83 /** 84 * @return data, i.e., 8 bytes. 85 */ 86 public final long getBytes() { return bytes; } 87 /** 88 * @param bytes. 89 */ 90 public final void setBytes(long bytes) { 91 this.bytes = bytes; 92 } 93 /** 94 * @return String representation. 95 */ 96 public final String toString() { 97 return super.toString() + "(bytes = " + bytes + ")"; 98 } 99 100 /** @return Long object 101 */ 102 public Object getConstantValue(ConstantPool cp) { 103 return bytes; 104 } 105 }