1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59f606f95f03a75961498803e24bee6799a7c0885Ying Wang * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) 6b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 7b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is free software; you can redistribute it and/or modify it 8b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * under the terms of the GNU General Public License as published by the Free 9b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Software Foundation; either version 2 of the License, or (at your option) 10b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * any later version. 11b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 12b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is distributed in the hope that it will be useful, but WITHOUT 13b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * more details. 16b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 17b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * You should have received a copy of the GNU General Public License along 18b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * with this program; if not, write to the Free Software Foundation, Inc., 19b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 21b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopackage proguard.classfile.constant; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.*; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.constant.visitor.ConstantVisitor; 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.visitor.*; 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This Constant represents a string constant in the constant pool. 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class StringConstant extends Constant 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public int u2stringIndex; 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * An extra field pointing to the referenced Clazz object, if this 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * string is being used in Class.forName(), .class, or 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Class.getDeclaredField/Method constructs. 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This field is typically filled out by the <code>{@link 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * proguard.classfile.util.DynamicClassReferenceInitializer 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * DynamicClassReferenceInitializer}</code> or by the <code>{@link 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * proguard.classfile.util.DynamicMemberReferenceInitializer 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * DynamicMemberReferenceInitializer}</code>. 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public Clazz referencedClass; 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * An extra field pointing to the referenced Member object, if this 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * string is being used in Class.getDeclaredField/Method constructs. 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This field is typically filled out by the <code>{@link 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * proguard.classfile.util.DynamicMemberReferenceInitializer 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * DynamicMemberReferenceInitializer}</code>. 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public Member referencedMember; 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * An extra field pointing to the java.lang.String Clazz object. 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This field is typically filled out by the <code>{@link 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * proguard.classfile.util.ClassReferenceInitializer 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ClassReferenceInitializer}</code>.. 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public Clazz javaLangStringClass; 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates an uninitialized StringConstant. 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public StringConstant() 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 75b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new StringConstant with the given string index. 76b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param u2stringIndex the index of the string in the constant pool. 77b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param referencedClass the referenced class, if any. 78b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param referenceMember the referenced class member, if any. 79b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 80b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public StringConstant(int u2stringIndex, 81b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato Clazz referencedClass, 82b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato Member referenceMember) 83b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 84b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.u2stringIndex = u2stringIndex; 85b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.referencedClass = referencedClass; 86b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.referencedMember = referenceMember; 87b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 88b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 89b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 90b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 91b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Returns the string value. 92b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 93b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public String getString(Clazz clazz) 94b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 95b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return clazz.getString(u2stringIndex); 96b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 97b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 98b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 99b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for Constant. 100b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 101b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public int getTag() 102b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 103b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return ClassConstants.CONSTANT_String; 104b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 105b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 106b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void accept(Clazz clazz, ConstantVisitor constantVisitor) 107b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 108b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato constantVisitor.visitStringConstant(clazz, this); 109b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 110b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 111b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 112b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 113b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Lets the referenced class accept the given visitor. 114b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 115b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void referencedClassAccept(ClassVisitor classVisitor) 116b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 117b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (referencedClass != null && 118b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato referencedMember == null) 119b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 120b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato referencedClass.accept(classVisitor); 121b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 122b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 123b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 124b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 125b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 126b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Lets the referenced member accept the given visitor. 127b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 128b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void referencedMemberAccept(MemberVisitor memberVisitor) 129b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 130b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (referencedMember != null) 131b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 132b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato referencedMember.accept(referencedClass, memberVisitor); 133b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 134b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 135b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 136