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Diffstat (limited to 'src/proguard/optimize/DuplicateInitializerFixer.java')
| -rw-r--r-- | src/proguard/optimize/DuplicateInitializerFixer.java | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/src/proguard/optimize/DuplicateInitializerFixer.java b/src/proguard/optimize/DuplicateInitializerFixer.java deleted file mode 100644 index f5d5787..0000000 --- a/src/proguard/optimize/DuplicateInitializerFixer.java +++ /dev/null @@ -1,215 +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.optimize; - -import proguard.classfile.*; -import proguard.classfile.attribute.*; -import proguard.classfile.attribute.annotation.*; -import proguard.classfile.attribute.visitor.AttributeVisitor; -import proguard.classfile.editor.ConstantPoolEditor; -import proguard.classfile.util.*; -import proguard.classfile.visitor.MemberVisitor; - -/** - * This MemberVisitor adds an additional parameter to the duplicate - * initialization methods that it visits. - */ -public class DuplicateInitializerFixer -extends SimplifiedVisitor -implements MemberVisitor, - AttributeVisitor -{ - private static final boolean DEBUG = false; - - private static final char[] TYPES = new char[] - { - ClassConstants.TYPE_BYTE, - ClassConstants.TYPE_CHAR, - ClassConstants.TYPE_SHORT, - ClassConstants.TYPE_INT, - ClassConstants.TYPE_BOOLEAN - }; - - - private final MemberVisitor extraFixedInitializerVisitor; - - - /** - * Creates a new DuplicateInitializerFixer. - */ - public DuplicateInitializerFixer() - { - this(null); - } - - - /** - * Creates a new DuplicateInitializerFixer with an extra visitor. - * @param extraFixedInitializerVisitor an optional extra visitor for all - * initializers that have been fixed. - */ - public DuplicateInitializerFixer(MemberVisitor extraFixedInitializerVisitor) - { - this.extraFixedInitializerVisitor = extraFixedInitializerVisitor; - } - - - // Implementations for MemberVisitor. - - public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) - { - // Is it a class instance initializer? - String name = programMethod.getName(programClass); - if (name.equals(ClassConstants.METHOD_NAME_INIT)) - { - // Is there already another initializer with the same descriptor? - String descriptor = programMethod.getDescriptor(programClass); - Method similarMethod = programClass.findMethod(name, descriptor); - if (!programMethod.equals(similarMethod)) - { - // Should this initializer be preserved? - if (KeepMarker.isKept(programMethod)) - { - // Fix the other initializer. - programMethod = (ProgramMethod)similarMethod; - } - - int index = descriptor.indexOf(ClassConstants.METHOD_ARGUMENTS_CLOSE); - - // Try to find a new, unique descriptor. - int typeCounter = 0; - while (true) - { - // Construct the new descriptor by inserting a new type - // as an additional last argument. - StringBuffer newDescriptorBuffer = - new StringBuffer(descriptor.substring(0, index)); - - for (int arrayDimension = 0; arrayDimension < typeCounter / TYPES.length; arrayDimension++) - { - newDescriptorBuffer.append(ClassConstants.TYPE_ARRAY); - } - - newDescriptorBuffer.append(TYPES[typeCounter % TYPES.length]); - newDescriptorBuffer.append(descriptor.substring(index)); - - String newDescriptor = newDescriptorBuffer.toString(); - - // Is the new initializer descriptor unique? - if (programClass.findMethod(name, newDescriptor) == null) - { - if (DEBUG) - { - System.out.println("DuplicateInitializerFixer:"); - System.out.println(" ["+programClass.getName()+"."+name+descriptor+"] ("+ClassUtil.externalClassAccessFlags(programMethod.getAccessFlags())+") -> ["+newDescriptor+"]"); - } - - // Update the descriptor. - programMethod.u2descriptorIndex = - new ConstantPoolEditor(programClass).addUtf8Constant(newDescriptor); - - // Fix the local variable frame size, the method - // signature, and the parameter annotations, if - // necessary. - programMethod.attributesAccept(programClass, - this); - - // Visit the initializer, if required. - if (extraFixedInitializerVisitor != null) - { - extraFixedInitializerVisitor.visitProgramMethod(programClass, programMethod); - } - - // We're done with this constructor. - return; - } - - typeCounter++; - } - } - } - } - - - // Implementations for AttributeVisitor. - - public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} - - - public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) - { - // The minimum variable size is determined by the arguments. - int maxLocals = - ClassUtil.internalMethodParameterSize(method.getDescriptor(clazz), - method.getAccessFlags()); - - if (codeAttribute.u2maxLocals < maxLocals) - { - codeAttribute.u2maxLocals = maxLocals; - } - } - - - public void visitSignatureAttribute(Clazz clazz, Method method, SignatureAttribute signatureAttribute) - { - String descriptor = method.getDescriptor(clazz); - int descriptorIndex = descriptor.indexOf(ClassConstants.METHOD_ARGUMENTS_CLOSE); - String signature = signatureAttribute.getSignature(clazz); - int signatureIndex = signature.indexOf(ClassConstants.METHOD_ARGUMENTS_CLOSE); - - String newSignature = signature.substring(0, signatureIndex) + - descriptor.charAt(descriptorIndex - 1) + - signature.substring(signatureIndex); - - // Update the signature. - signatureAttribute.u2signatureIndex = - new ConstantPoolEditor((ProgramClass)clazz).addUtf8Constant(newSignature); - } - - - public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method, ParameterAnnotationsAttribute parameterAnnotationsAttribute) - { - // Update the number of parameters. - int oldParametersCount = parameterAnnotationsAttribute.u1parametersCount++; - - if (parameterAnnotationsAttribute.u2parameterAnnotationsCount == null || - parameterAnnotationsAttribute.u2parameterAnnotationsCount.length < parameterAnnotationsAttribute.u1parametersCount) - { - int[] annotationsCounts = new int[parameterAnnotationsAttribute.u1parametersCount]; - Annotation[][] annotations = new Annotation[parameterAnnotationsAttribute.u1parametersCount][]; - - System.arraycopy(parameterAnnotationsAttribute.u2parameterAnnotationsCount, - 0, - annotationsCounts, - 0, - oldParametersCount); - - System.arraycopy(parameterAnnotationsAttribute.parameterAnnotations, - 0, - annotations, - 0, - oldParametersCount); - - parameterAnnotationsAttribute.u2parameterAnnotationsCount = annotationsCounts; - parameterAnnotationsAttribute.parameterAnnotations = annotations; - } - } -}
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