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_NameAndType_info.java,v 1.1.1.1 2004/05/09 16:57:49 vlad_r Exp $ 8 */ 9package com.vladium.jcd.cls.constant; 10 11import java.io.IOException; 12 13import com.vladium.jcd.cls.ClassDef; 14import com.vladium.jcd.lib.UDataInputStream; 15import com.vladium.jcd.lib.UDataOutputStream; 16 17// ---------------------------------------------------------------------------- 18/** 19 * The CONSTANT_NameAndType_info structure is used to represent a field or method, 20 * without indicating which class or interface type it belongs to.<P> 21 * 22 * The value of the name_index item must be a valid index into the constant pool 23 * table. The constant pool entry at that index must be a {@link CONSTANT_Utf8_info} 24 * structure representing a valid Java field name or method name stored as a simple 25 * (not fully qualified) name, that is, as a Java identifier.<P> 26 * 27 * The value of the descriptor_index item must be a valid index into the constant 28 * pool table. The constant pool entry at that index must be a {@link CONSTANT_Utf8_info} 29 * structure representing a valid Java field descriptor or method descriptor. 30 * 31 * @author (C) 2001, Vlad Roubtsov 32 */ 33public 34final class CONSTANT_NameAndType_info extends CONSTANT_info 35{ 36 // public: ................................................................ 37 38 public static final byte TAG = 12; 39 40 41 public int m_name_index; 42 public int m_descriptor_index; 43 44 45 public CONSTANT_NameAndType_info (final int name_index, final int descriptor_index) 46 { 47 m_name_index = name_index; 48 m_descriptor_index = descriptor_index; 49 } 50 51 public final byte tag () 52 { 53 return TAG; 54 } 55 56 public String getName (final ClassDef cls) 57 { 58 return ((CONSTANT_Utf8_info) cls.getConstants ().get (m_name_index)).m_value; 59 } 60 61 public String getDescriptor (final ClassDef cls) 62 { 63 return ((CONSTANT_Utf8_info) cls.getConstants ().get (m_descriptor_index)).m_value; 64 } 65 66 // Visitor: 67 68 public Object accept (final ICONSTANTVisitor visitor, final Object ctx) 69 { 70 return visitor.visit (this, ctx); 71 } 72 73 public String toString () 74 { 75 return "CONSTANT_NameAndType: [name_index = " + m_name_index + ", descriptor_index = " + m_descriptor_index + ']'; 76 } 77 78 // Cloneable: inherited clone() is Ok 79 80 // IClassFormatOutput: 81 82 public void writeInClassFormat (final UDataOutputStream out) throws IOException 83 { 84 super.writeInClassFormat (out); 85 86 out.writeU2 (m_name_index); 87 out.writeU2 (m_descriptor_index); 88 } 89 90 // protected: ............................................................. 91 92 93 protected CONSTANT_NameAndType_info (final UDataInputStream bytes) throws IOException 94 { 95 m_name_index = bytes.readU2 (); 96 m_descriptor_index = bytes.readU2 (); 97 } 98 99 // package: ............................................................... 100 101 // private: ............................................................... 102 103} // end of class 104// ---------------------------------------------------------------------------- 105