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Diffstat (limited to 'src/proguard/classfile/util/StringSharer.java')
| -rw-r--r-- | src/proguard/classfile/util/StringSharer.java | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/src/proguard/classfile/util/StringSharer.java b/src/proguard/classfile/util/StringSharer.java deleted file mode 100644 index 5ef231e..0000000 --- a/src/proguard/classfile/util/StringSharer.java +++ /dev/null @@ -1,172 +0,0 @@ -/* - * ProGuard -- shrinking, optimization, obfuscation, and preverification - * of Java bytecode. - * - * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -package proguard.classfile.util; - -import proguard.classfile.*; -import proguard.classfile.attribute.Attribute; -import proguard.classfile.attribute.visitor.AttributeVisitor; -import proguard.classfile.constant.*; -import proguard.classfile.constant.visitor.ConstantVisitor; -import proguard.classfile.visitor.ClassVisitor; - -/** - * This ClassVisitor shares strings in the class files that it visits. - * - * @author Eric Lafortune - */ -public class StringSharer -extends SimplifiedVisitor -implements ClassVisitor, - ConstantVisitor, - AttributeVisitor -{ - // A fields acting as an argument for the visitor methods. - private String name; - private String type; - - - // Implementations for ClassVisitor. - - public void visitProgramClass(ProgramClass programClass) - { - // Replace name strings in the constant pool by shared strings. - programClass.constantPoolEntriesAccept(this); - - // Replace attribute name strings in the constant pool by internalized - // strings. - programClass.attributesAccept(this); - } - - - public void visitLibraryClass(LibraryClass libraryClass) - { - // Replace the super class name string by the shared name string. - Clazz superClass = libraryClass.superClass; - if (superClass != null) - { - libraryClass.superClassName = superClass.getName(); - } - - // Replace the interface name strings by the shared name strings. - if (libraryClass.interfaceNames != null) - { - String[] interfaceNames = libraryClass.interfaceNames; - Clazz[] interfaceClasses = new Clazz[interfaceNames.length]; - - for (int index = 0; index < interfaceNames.length; index++) - { - // Keep a reference to the interface class. - Clazz interfaceClass = interfaceClasses[index]; - if (interfaceClass != null) - { - interfaceNames[index] = interfaceClass.getName(); - } - } - } - } - - - // Implementations for ConstantVisitor. - - - public void visitAnyConstant(Clazz clazz, Constant constant) {} - - - public void visitStringConstant(Clazz clazz, StringConstant stringConstant) - { - Member referencedMember = stringConstant.referencedMember; - if (referencedMember != null) - { - Clazz referencedClass = stringConstant.referencedClass; - - // Put the actual class member's name in the class pool. - name = referencedMember.getName(referencedClass); - clazz.constantPoolEntryAccept(stringConstant.u2stringIndex, this); - } - } - - - public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant) - { - Member referencedMember = refConstant.referencedMember; - if (referencedMember != null) - { - Clazz referencedClass = refConstant.referencedClass; - - // Put the actual class member's name and type strings in the class - // pool. - name = referencedMember.getName(referencedClass); - type = referencedMember.getDescriptor(referencedClass); - clazz.constantPoolEntryAccept(refConstant.u2nameAndTypeIndex, this); - } - } - - - public void visitNameAndTypeConstant(Clazz clazz, NameAndTypeConstant nameAndTypeConstant) - { - if (name != null) - { - // Put the actual class member's name and type strings in the class - // pool. - clazz.constantPoolEntryAccept(nameAndTypeConstant.u2nameIndex, this); - name = type; - clazz.constantPoolEntryAccept(nameAndTypeConstant.u2descriptorIndex, this); - } - } - - - public void visitClassConstant(Clazz clazz, ClassConstant classConstant) - { - Clazz referencedClass = classConstant.referencedClass; - if (referencedClass != null) - { - // Put the actual class's name string in the class pool. - name = referencedClass.getName(); - clazz.constantPoolEntryAccept(classConstant.u2nameIndex, this); - } - } - - - public void visitUtf8Constant(Clazz clazz, Utf8Constant utf8Constant) - { - // Do we have a new string to put into this constant? - if (name != null) - { - // Replace the string, if it's actually the same. - if (name.equals(utf8Constant.getString())) - { - utf8Constant.setString(name); - } - - name = null; - } - } - - - // Implementations for AttributeVisitor. - - public void visitAnyAttribute(Clazz clazz, Attribute attribute) - { - // Put the internalized attribute's name string in the class pool. - name = attribute.getAttributeName(clazz).intern(); - clazz.constantPoolEntryAccept(attribute.u2attributeNameIndex, this); - } -} |