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Diffstat (limited to 'src/proguard/optimize/DuplicateInitializerInvocationFixer.java')
| -rw-r--r-- | src/proguard/optimize/DuplicateInitializerInvocationFixer.java | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/src/proguard/optimize/DuplicateInitializerInvocationFixer.java b/src/proguard/optimize/DuplicateInitializerInvocationFixer.java deleted file mode 100644 index 22bfc52..0000000 --- a/src/proguard/optimize/DuplicateInitializerInvocationFixer.java +++ /dev/null @@ -1,165 +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.visitor.AttributeVisitor; -import proguard.classfile.constant.*; -import proguard.classfile.constant.visitor.ConstantVisitor; -import proguard.classfile.editor.CodeAttributeEditor; -import proguard.classfile.instruction.*; -import proguard.classfile.instruction.visitor.InstructionVisitor; -import proguard.classfile.util.*; -import proguard.classfile.visitor.MemberVisitor; - -/** - * This AttributeVisitor adds an additional integer parameter to the tweaked - * initialization method invocations that it visits. - */ -public class DuplicateInitializerInvocationFixer -extends SimplifiedVisitor -implements AttributeVisitor, - InstructionVisitor, - ConstantVisitor, - MemberVisitor -{ - private static final boolean DEBUG = false; - - private final InstructionVisitor extraAddedInstructionVisitor; - - private final CodeAttributeEditor codeAttributeEditor = new CodeAttributeEditor(); - - private String descriptor; - private int descriptorLengthDelta; - - - /** - * Creates a new DuplicateInitializerInvocationFixer. - */ - public DuplicateInitializerInvocationFixer() - { - this(null); - } - - - /** - * Creates a new DuplicateInitializerInvocationFixer. - * @param extraAddedInstructionVisitor an optional extra visitor for all - * added instructions. - */ - public DuplicateInitializerInvocationFixer(InstructionVisitor extraAddedInstructionVisitor) - { - this.extraAddedInstructionVisitor = extraAddedInstructionVisitor; - } - - - // Implementations for AttributeVisitor. - - public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} - - - public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) - { - - // Reset the code changes. - codeAttributeEditor.reset(codeAttribute.u4codeLength); - - // Fix any duplicate constructor invocations. - codeAttribute.instructionsAccept(clazz, - method, - this); - - // Apply all accumulated changes to the code. - codeAttributeEditor.visitCodeAttribute(clazz, method, codeAttribute); - } - - - // Implementations for InstructionVisitor. - - public void visitAnyInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) {} - - - public void visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction) - { - if (constantInstruction.opcode == InstructionConstants.OP_INVOKESPECIAL) - { - descriptorLengthDelta = 0; - clazz.constantPoolEntryAccept(constantInstruction.constantIndex, this); - - if (descriptorLengthDelta > 0) - { - Instruction extraInstruction = - new SimpleInstruction(descriptorLengthDelta == 1 ? - InstructionConstants.OP_ICONST_0 : - InstructionConstants.OP_ACONST_NULL); - - codeAttributeEditor.insertBeforeInstruction(offset, - extraInstruction); - - if (DEBUG) - { - System.out.println(" ["+clazz.getName()+"."+method.getName(clazz)+method.getDescriptor(clazz)+"] Inserting "+extraInstruction.toString()+" before "+constantInstruction.toString(offset)); - } - - if (extraAddedInstructionVisitor != null) - { - extraInstruction.accept(null, null, null, offset, extraAddedInstructionVisitor); - } - } - } - } - - - // Implementations for ConstantVisitor. - - public void visitAnyMethodrefConstant(Clazz clazz, RefConstant refConstant) - { - // Check the referenced constructor descriptor. - if (refConstant.getName(clazz).equals(ClassConstants.METHOD_NAME_INIT)) - { - descriptor = refConstant.getType(clazz); - - refConstant.referencedMemberAccept(this); - } - } - - - // Implementations for MemberVisitor. - - public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) {} - - - public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) - { - descriptorLengthDelta = - programMethod.getDescriptor(programClass).length() - descriptor.length(); - - if (DEBUG) - { - if (descriptorLengthDelta > 0) - { - System.out.println("DuplicateInitializerInvocationFixer:"); - System.out.println(" ["+programClass.getName()+"."+programMethod.getName(programClass)+programMethod.getDescriptor(programClass)+"] ("+ClassUtil.externalClassAccessFlags(programMethod.getAccessFlags())+") referenced by:"); - } - } - } -} |