1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu) 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 package proguard.classfile.constant; 22 23 import proguard.classfile.*; 24 import proguard.classfile.visitor.*; 25 26 /** 27 * This Constant represents a ref constant in the constant pool. 28 * 29 * @author Eric Lafortune 30 */ 31 public abstract class RefConstant extends Constant 32 { 33 public int u2classIndex; 34 public int u2nameAndTypeIndex; 35 36 /** 37 * An extra field pointing to the referenced Clazz object. 38 * This field is typically filled out by the <code>{@link 39 * proguard.classfile.util.ClassReferenceInitializer 40 * ClassReferenceInitializer}</code>. 41 */ 42 public Clazz referencedClass; 43 44 /** 45 * An extra field optionally pointing to the referenced Member object. 46 * This field is typically filled out by the <code>{@link 47 * proguard.classfile.util.ClassReferenceInitializer 48 * ClassReferenceInitializer}</code>. 49 */ 50 public Member referencedMember; 51 52 RefConstant()53 protected RefConstant() 54 { 55 } 56 57 58 /** 59 * Returns the class index. 60 */ getClassIndex()61 public int getClassIndex() 62 { 63 return u2classIndex; 64 } 65 66 /** 67 * Returns the name-and-type index. 68 */ getNameAndTypeIndex()69 public int getNameAndTypeIndex() 70 { 71 return u2nameAndTypeIndex; 72 } 73 74 /** 75 * Sets the name-and-type index. 76 */ setNameAndTypeIndex(int index)77 public void setNameAndTypeIndex(int index) 78 { 79 u2nameAndTypeIndex = index; 80 } 81 82 /** 83 * Returns the class name. 84 */ getClassName(Clazz clazz)85 public String getClassName(Clazz clazz) 86 { 87 return clazz.getClassName(u2classIndex); 88 } 89 90 /** 91 * Returns the method/field name. 92 */ getName(Clazz clazz)93 public String getName(Clazz clazz) 94 { 95 return clazz.getName(u2nameAndTypeIndex); 96 } 97 98 /** 99 * Returns the type. 100 */ getType(Clazz clazz)101 public String getType(Clazz clazz) 102 { 103 return clazz.getType(u2nameAndTypeIndex); 104 } 105 106 107 /** 108 * Lets the referenced class accept the given visitor. 109 */ referencedClassAccept(ClassVisitor classVisitor)110 public void referencedClassAccept(ClassVisitor classVisitor) 111 { 112 if (referencedClass != null) 113 { 114 referencedClass.accept(classVisitor); 115 } 116 } 117 118 119 /** 120 * Lets the referenced class member accept the given visitor. 121 */ referencedMemberAccept(MemberVisitor memberVisitor)122 public void referencedMemberAccept(MemberVisitor memberVisitor) 123 { 124 if (referencedMember != null) 125 { 126 referencedMember.accept(referencedClass, 127 memberVisitor); 128 } 129 } 130 } 131