1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 52270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom * Copyright (c) 2002-2014 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 */ 21b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wangpackage proguard.classfile.editor; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.*; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.*; 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.annotation.*; 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.annotation.visitor.*; 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.preverification.*; 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.visitor.*; 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.constant.*; 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.constant.visitor.ConstantVisitor; 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.util.SimplifiedVisitor; 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.visitor.*; 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 34b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wangimport java.util.Arrays; 35b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 36b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 38b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang * This ClassVisitor removes UTF-8 constant pool entries that are not used. 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 42b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wangpublic class Utf8Shrinker 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoextends SimplifiedVisitor 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimplements ClassVisitor, 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato MemberVisitor, 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ConstantVisitor, 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato AttributeVisitor, 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato InnerClassesInfoVisitor, 492270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom ParameterInfoVisitor, 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato LocalVariableInfoVisitor, 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato LocalVariableTypeInfoVisitor, 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato AnnotationVisitor, 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ElementValueVisitor 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // A visitor info flag to indicate the UTF-8 constant pool entry is being used. 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private static final Object USED = new Object(); 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 58b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang private int[] constantIndexMap = new int[ClassConstants.TYPICAL_CONSTANT_POOL_SIZE]; 59b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang private final ConstantPoolRemapper constantPoolRemapper = new ConstantPoolRemapper(); 60b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for ClassVisitor. 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitProgramClass(ProgramClass programClass) 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the other constant pool entries. 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programClass.constantPoolEntriesAccept(this); 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the fields and methods. 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programClass.fieldsAccept(this); 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programClass.methodsAccept(this); 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the attributes. 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programClass.attributesAccept(this); 75b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 76b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang // Shift the used constant pool entries together, filling out the 77b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang // index map. 78b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang int newConstantPoolCount = 79b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang shrinkConstantPool(programClass.constantPool, 80b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang programClass.u2constantPoolCount); 81b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 82b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang // Remap the references to the constant pool if it has shrunk. 83b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang if (newConstantPoolCount < programClass.u2constantPoolCount) 84b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang { 85b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang programClass.u2constantPoolCount = newConstantPoolCount; 86b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 87b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang // Remap all constant pool references. 88b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang constantPoolRemapper.setConstantIndexMap(constantIndexMap); 89b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang constantPoolRemapper.visitProgramClass(programClass); 90b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang } 91b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 92b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 93b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 94b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for MemberVisitor. 95b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 96b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitProgramMember(ProgramClass programClass, ProgramMember programMember) 97b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 98b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the name and descriptor UTF-8 entries. 99b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(programClass, programMember.u2nameIndex); 100b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(programClass, programMember.u2descriptorIndex); 101b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 102b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the attributes. 103b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programMember.attributesAccept(programClass, this); 104b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 105b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 106b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 107b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for ConstantVisitor. 108b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 109b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitAnyConstant(Clazz clazz, Constant constant) {} 110b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 111b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 112b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitStringConstant(Clazz clazz, StringConstant stringConstant) 113b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 114b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, stringConstant.u2stringIndex); 115b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 116b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 117b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 118b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitClassConstant(Clazz clazz, ClassConstant classConstant) 119b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 120b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, classConstant.u2nameIndex); 121b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 122b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 123b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 124b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitNameAndTypeConstant(Clazz clazz, NameAndTypeConstant nameAndTypeConstant) 125b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 126b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, nameAndTypeConstant.u2nameIndex); 127b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, nameAndTypeConstant.u2descriptorIndex); 128b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 129b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 130b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 131b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for AttributeVisitor. 132b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 133b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute) 134b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 135b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // This is the best we can do for unknown attributes. 136b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, unknownAttribute.u2attributeNameIndex); 137b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 138b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 139b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 140b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute) 141b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 142b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, sourceFileAttribute.u2attributeNameIndex); 143b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 144b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, sourceFileAttribute.u2sourceFileIndex); 145b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 146b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 147b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 148b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute) 149b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 150b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, sourceDirAttribute.u2attributeNameIndex); 151b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 152b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, sourceDirAttribute.u2sourceDirIndex); 153b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 154b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 155b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 156b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute) 157b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 158b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, innerClassesAttribute.u2attributeNameIndex); 159b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 160b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the inner classes. 161b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato innerClassesAttribute.innerClassEntriesAccept(clazz, this); 162b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 163b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 164b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 165b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute) 166b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 167b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, enclosingMethodAttribute.u2attributeNameIndex); 168b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 169b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // These entries have already been marked in the constant pool. 170b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato //clazz.constantPoolEntryAccept(this, enclosingMethodAttribute.u2classIndex); 171b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato //clazz.constantPoolEntryAccept(this, enclosingMethodAttribute.u2nameAndTypeIndex); 172b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 173b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 174b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 175b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute) 176b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 177b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, deprecatedAttribute.u2attributeNameIndex); 178b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 179b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 180b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 181b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute) 182b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 183b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, syntheticAttribute.u2attributeNameIndex); 184b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 185b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 186b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 187b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute) 188b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 189b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, signatureAttribute.u2attributeNameIndex); 190b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 191b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, signatureAttribute.u2signatureIndex); 192b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 193b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 194b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 195b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute) 196b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 197b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, constantValueAttribute.u2attributeNameIndex); 198b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 199b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 200b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 2012270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom public void visitMethodParametersAttribute(Clazz clazz, Method method, MethodParametersAttribute methodParametersAttribute) 2022270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom { 2032270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom markCpUtf8Entry(clazz, methodParametersAttribute.u2attributeNameIndex); 2042270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom 2052270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom // Mark the UTF-8 entries referenced by the parameter information. 2062270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom methodParametersAttribute.parametersAccept(clazz, method, this); 2072270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom } 2082270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom 2092270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom 210b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute) 211b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 212b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, exceptionsAttribute.u2attributeNameIndex); 213b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 214b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 215b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 216b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) 217b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 218b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, codeAttribute.u2attributeNameIndex); 219b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 220b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the attributes. 221b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato codeAttribute.attributesAccept(clazz, method, this); 222b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 223b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 224b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 225b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute) 226b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 227b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, stackMapAttribute.u2attributeNameIndex); 228b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 229b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 230b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 231b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute) 232b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 233b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, stackMapTableAttribute.u2attributeNameIndex); 234b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 235b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 236b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 237b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute) 238b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 239b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, lineNumberTableAttribute.u2attributeNameIndex); 240b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 241b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 242b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 243b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute) 244b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 245b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, localVariableTableAttribute.u2attributeNameIndex); 246b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 247b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the local variables. 248b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato localVariableTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this); 249b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 250b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 251b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 252b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute) 253b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 254b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, localVariableTypeTableAttribute.u2attributeNameIndex); 255b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 256b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the local variable types. 257b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato localVariableTypeTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this); 258b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 259b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 260b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 261b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitAnyAnnotationsAttribute(Clazz clazz, AnnotationsAttribute annotationsAttribute) 262b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 263b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, annotationsAttribute.u2attributeNameIndex); 264b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 265b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the annotations. 266b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato annotationsAttribute.annotationsAccept(clazz, this); 267b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 268b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 269b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 270b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method, ParameterAnnotationsAttribute parameterAnnotationsAttribute) 271b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 272b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, parameterAnnotationsAttribute.u2attributeNameIndex); 273b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 274b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the annotations. 275b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato parameterAnnotationsAttribute.annotationsAccept(clazz, method, this); 276b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 277b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 278b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 279b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute) 280b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 281b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, annotationDefaultAttribute.u2attributeNameIndex); 282b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 283b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the element value. 284b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato annotationDefaultAttribute.defaultValueAccept(clazz, this); 285b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 286b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 287b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 288b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for InnerClassesInfoVisitor. 289b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 290b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo) 291b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 292b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (innerClassesInfo.u2innerNameIndex != 0) 293b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 294b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, innerClassesInfo.u2innerNameIndex); 295b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 296b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 297b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 298b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 2992270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom // Implementations for ParameterInfoVisitor. 3002270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom 3012270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom public void visitParameterInfo(Clazz clazz, Method method, int parameterIndex, ParameterInfo parameterInfo) 3022270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom { 3032270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom if (parameterInfo.u2nameIndex != 0) 3042270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom { 3052270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom markCpUtf8Entry(clazz, parameterInfo.u2nameIndex); 3062270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom } 3072270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom } 3082270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom 3092270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom 310b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for LocalVariableInfoVisitor. 311b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 312b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLocalVariableInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfo localVariableInfo) 313b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 314b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, localVariableInfo.u2nameIndex); 315b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, localVariableInfo.u2descriptorIndex); 316b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 317b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 318b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 319b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for LocalVariableTypeInfoVisitor. 320b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 321b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLocalVariableTypeInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeInfo localVariableTypeInfo) 322b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 323b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, localVariableTypeInfo.u2nameIndex); 324b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, localVariableTypeInfo.u2signatureIndex); 325b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 326b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 327b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 328b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for AnnotationVisitor. 329b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 330b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitAnnotation(Clazz clazz, Annotation annotation) 331b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 332b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, annotation.u2typeIndex); 333b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 334b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the element values. 335b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato annotation.elementValuesAccept(clazz, this); 336b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 337b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 338b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 339b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for ElementValueVisitor. 340b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 341b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitConstantElementValue(Clazz clazz, Annotation annotation, ConstantElementValue constantElementValue) 342b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 343b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (constantElementValue.u2elementNameIndex != 0) 344b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 345b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, constantElementValue.u2elementNameIndex); 346b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 347b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 348b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Only the string constant element value refers to a UTF-8 entry. 349b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (constantElementValue.u1tag == ClassConstants.ELEMENT_VALUE_STRING_CONSTANT) 350b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 351b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, constantElementValue.u2constantValueIndex); 352b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 353b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 354b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 355b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 356b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitEnumConstantElementValue(Clazz clazz, Annotation annotation, EnumConstantElementValue enumConstantElementValue) 357b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 358b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (enumConstantElementValue.u2elementNameIndex != 0) 359b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 360b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, enumConstantElementValue.u2elementNameIndex); 361b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 362b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 363b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, enumConstantElementValue.u2typeNameIndex); 364b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, enumConstantElementValue.u2constantNameIndex); 365b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 366b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 367b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 368b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitClassElementValue(Clazz clazz, Annotation annotation, ClassElementValue classElementValue) 369b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 370b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (classElementValue.u2elementNameIndex != 0) 371b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 372b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, classElementValue.u2elementNameIndex); 373b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 374b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 375b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, classElementValue.u2classInfoIndex); 376b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 377b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 378b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 379b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitAnnotationElementValue(Clazz clazz, Annotation annotation, AnnotationElementValue annotationElementValue) 380b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 381b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (annotationElementValue.u2elementNameIndex != 0) 382b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 383b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, annotationElementValue.u2elementNameIndex); 384b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 385b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 386b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the annotation. 387b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato annotationElementValue.annotationAccept(clazz, this); 388b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 389b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 390b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 391b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitArrayElementValue(Clazz clazz, Annotation annotation, ArrayElementValue arrayElementValue) 392b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 393b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (arrayElementValue.u2elementNameIndex != 0) 394b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 395b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markCpUtf8Entry(clazz, arrayElementValue.u2elementNameIndex); 396b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 397b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 398b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Mark the UTF-8 entries referenced by the element values. 399b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato arrayElementValue.elementValuesAccept(clazz, annotation, this); 400b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 401b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 402b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 403b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Small utility methods. 404b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 405b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 406b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Marks the given UTF-8 constant pool entry of the given class. 407b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 408b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private void markCpUtf8Entry(Clazz clazz, int index) 409b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 410b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato markAsUsed((Utf8Constant)((ProgramClass)clazz).getConstant(index)); 411b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 412b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 413b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 414b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 415b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Marks the given VisitorAccepter as being used. 416b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * In this context, the VisitorAccepter will be a Utf8Constant object. 417b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 418b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang private void markAsUsed(VisitorAccepter visitorAccepter) 419b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 420b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato visitorAccepter.setVisitorInfo(USED); 421b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 422b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 423b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 424b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 425b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Returns whether the given VisitorAccepter has been marked as being used. 426b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * In this context, the VisitorAccepter will be a Utf8Constant object. 427b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 428b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang private boolean isUsed(VisitorAccepter visitorAccepter) 429b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 430b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return visitorAccepter.getVisitorInfo() == USED; 431b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 432b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 433b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 434b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang /** 435b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang * Removes all UTF-8 entries that are not marked as being used 436b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang * from the given constant pool. 437b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang * @return the new number of entries. 438b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang */ 439b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang private int shrinkConstantPool(Constant[] constantPool, int length) 440b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang { 441b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang // Create a new index map, if necessary. 442b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang if (constantIndexMap.length < length) 443b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang { 444b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang constantIndexMap = new int[length]; 445b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang } 446b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 447b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang int counter = 1; 448b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang boolean isUsed = false; 449b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 450b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang // Shift the used constant pool entries together. 451b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang for (int index = 1; index < length; index++) 452b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang { 453b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang Constant constant = constantPool[index]; 454b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 4552270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom // Is the constant being used? Don't update the flag if this is the 4562270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom // second half of a long entry. 457b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang if (constant != null) 458b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang { 459b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang isUsed = constant.getTag() != ClassConstants.CONSTANT_Utf8 || 460b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang isUsed(constant); 461b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang } 462b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 463b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang if (isUsed) 464b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang { 4652270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom // Remember the new index. 4662270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom constantIndexMap[index] = counter; 4672270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom 4682270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom // Shift the constant pool entry. 469b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang constantPool[counter++] = constant; 470b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang } 4712270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom else 4722270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom { 4732270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom // Remember an invalid index. 4742270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom constantIndexMap[index] = -1; 4752270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom } 476b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang } 477b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 478b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang // Clear the remaining constant pool elements. 479b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang Arrays.fill(constantPool, counter, length, null); 480b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang 481b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang return counter; 482b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang } 483b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 484