1 /* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved. 2 * 3 * This program and the accompanying materials are made available under 4 * the terms of the Common Public License v1.0 which accompanies this distribution, 5 * and is available at http://www.eclipse.org/legal/cpl-v10.html 6 * 7 * $Id: CONSTANT_Utf8_info.java,v 1.1.1.1 2004/05/09 16:57:49 vlad_r Exp $ 8 */ 9 package com.vladium.jcd.cls.constant; 10 11 import java.io.IOException; 12 13 import com.vladium.jcd.lib.UDataInputStream; 14 import com.vladium.jcd.lib.UDataOutputStream; 15 16 // ---------------------------------------------------------------------------- 17 /** 18 * The CONSTANT_Utf8_info structure is used to represent constant string values.<P> 19 * 20 * The bytes of multibyte characters are stored in the class file in big-endian 21 * (high byte first) order. There are two differences between this format and the 22 * "standard" UTF-8 format. First, the null byte (byte)0 is encoded using the 23 * two-byte format rather than the one-byte format, so that Java Virtual Machine 24 * UTF-8 strings never have embedded nulls. Second, only the one-byte, two-byte, 25 * and three-byte formats are used. The Java Virtual Machine does not recognize 26 * the longer UTF-8 formats. 27 * 28 * @author (C) 2001, Vlad Roubtsov 29 */ 30 public 31 final class CONSTANT_Utf8_info extends CONSTANT_info 32 { 33 // public: ................................................................ 34 35 public static final byte TAG = 1; 36 37 public String m_value; 38 39 40 public CONSTANT_Utf8_info (final String value) 41 { 42 m_value = value; 43 } 44 45 46 public final byte tag () 47 { 48 return TAG; 49 } 50 51 // Visitor: 52 53 public Object accept (final ICONSTANTVisitor visitor, final Object ctx) 54 { 55 return visitor.visit (this, ctx); 56 } 57 58 public String toString () 59 { 60 return "CONSTANT_Utf8: [" + m_value + ']'; 61 } 62 63 // Cloneable: inherited clone() is Ok 64 65 // IClassFormatOutput: 66 67 public void writeInClassFormat (final UDataOutputStream out) throws IOException 68 { 69 super.writeInClassFormat (out); 70 71 out.writeUTF (m_value); 72 } 73 74 // protected: ............................................................. 75 76 77 protected CONSTANT_Utf8_info (final UDataInputStream bytes) throws IOException 78 { 79 m_value = bytes.readUTF (); 80 } 81 82 // package: ............................................................... 83 84 // private: ............................................................... 85 86 } // end of class 87 // ---------------------------------------------------------------------------- 88
