1 files changed, 0 insertions, 483 deletions
diff --git a/src/proguard/classfile/editor/Utf8Shrinker.java b/src/proguard/classfile/editor/Utf8Shrinker.java
deleted file mode 100644
index 35626d7..0000000
--- a/src/proguard/classfile/editor/Utf8Shrinker.java
+++ /dev/null
@@ -1,483 +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.editor;
-
-import proguard.classfile.*;
-import proguard.classfile.attribute.*;
-import proguard.classfile.attribute.annotation.*;
-import proguard.classfile.attribute.annotation.visitor.*;
-import proguard.classfile.attribute.preverification.*;
-import proguard.classfile.attribute.visitor.*;
-import proguard.classfile.constant.*;
-import proguard.classfile.constant.visitor.ConstantVisitor;
-import proguard.classfile.util.SimplifiedVisitor;
-import proguard.classfile.visitor.*;
-
-import java.util.Arrays;
-
-
-/**
- * This ClassVisitor removes UTF-8 constant pool entries that are not used.
- *
- * @author Eric Lafortune
- */
-public class Utf8Shrinker
-extends      SimplifiedVisitor
-implements   ClassVisitor,
-             MemberVisitor,
-             ConstantVisitor,
-             AttributeVisitor,
-             InnerClassesInfoVisitor,
-             ParameterInfoVisitor,
-             LocalVariableInfoVisitor,
-             LocalVariableTypeInfoVisitor,
-             AnnotationVisitor,
-             ElementValueVisitor
-{
-    // A visitor info flag to indicate the UTF-8 constant pool entry is being used.
-    private static final Object USED = new Object();
-
-    private       int[]                constantIndexMap     = new int[ClassConstants.TYPICAL_CONSTANT_POOL_SIZE];
-    private final ConstantPoolRemapper constantPoolRemapper = new ConstantPoolRemapper();
-
-
-    // Implementations for ClassVisitor.
-
-    public void visitProgramClass(ProgramClass programClass)
-    {
-        // Mark the UTF-8 entries referenced by the other constant pool entries.
-        programClass.constantPoolEntriesAccept(this);
-
-        // Mark the UTF-8 entries referenced by the fields and methods.
-        programClass.fieldsAccept(this);
-        programClass.methodsAccept(this);
-
-        // Mark the UTF-8 entries referenced by the attributes.
-        programClass.attributesAccept(this);
-
-        // Shift the used constant pool entries together, filling out the
-        // index map.
-        int newConstantPoolCount =
-            shrinkConstantPool(programClass.constantPool,
-                               programClass.u2constantPoolCount);
-
-        // Remap the references to the constant pool if it has shrunk.
-        if (newConstantPoolCount < programClass.u2constantPoolCount)
-        {
-            programClass.u2constantPoolCount = newConstantPoolCount;
-
-            // Remap all constant pool references.
-            constantPoolRemapper.setConstantIndexMap(constantIndexMap);
-            constantPoolRemapper.visitProgramClass(programClass);
-        }
-    }
-
-
-    // Implementations for MemberVisitor.
-
-    public void visitProgramMember(ProgramClass programClass, ProgramMember programMember)
-    {
-        // Mark the name and descriptor UTF-8 entries.
-        markCpUtf8Entry(programClass, programMember.u2nameIndex);
-        markCpUtf8Entry(programClass, programMember.u2descriptorIndex);
-
-        // Mark the UTF-8 entries referenced by the attributes.
-        programMember.attributesAccept(programClass, this);
-    }
-
-
-    // Implementations for ConstantVisitor.
-
-    public void visitAnyConstant(Clazz clazz, Constant constant) {}
-
-
-    public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
-    {
-        markCpUtf8Entry(clazz, stringConstant.u2stringIndex);
-    }
-
-
-    public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
-    {
-        markCpUtf8Entry(clazz, classConstant.u2nameIndex);
-    }
-
-
-    public void visitNameAndTypeConstant(Clazz clazz, NameAndTypeConstant nameAndTypeConstant)
-    {
-        markCpUtf8Entry(clazz, nameAndTypeConstant.u2nameIndex);
-        markCpUtf8Entry(clazz, nameAndTypeConstant.u2descriptorIndex);
-    }
-
-
-    // Implementations for AttributeVisitor.
-
-    public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute)
-    {
-        // This is the best we can do for unknown attributes.
-        markCpUtf8Entry(clazz, unknownAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute)
-    {
-        markCpUtf8Entry(clazz, sourceFileAttribute.u2attributeNameIndex);
-
-        markCpUtf8Entry(clazz, sourceFileAttribute.u2sourceFileIndex);
-    }
-
-
-    public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute)
-    {
-        markCpUtf8Entry(clazz, sourceDirAttribute.u2attributeNameIndex);
-
-        markCpUtf8Entry(clazz, sourceDirAttribute.u2sourceDirIndex);
-    }
-
-
-    public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute)
-    {
-        markCpUtf8Entry(clazz, innerClassesAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the inner classes.
-        innerClassesAttribute.innerClassEntriesAccept(clazz, this);
-    }
-
-
-    public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute)
-    {
-        markCpUtf8Entry(clazz, enclosingMethodAttribute.u2attributeNameIndex);
-
-        // These entries have already been marked in the constant pool.
-        //clazz.constantPoolEntryAccept(this, enclosingMethodAttribute.u2classIndex);
-        //clazz.constantPoolEntryAccept(this, enclosingMethodAttribute.u2nameAndTypeIndex);
-    }
-
-
-    public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute)
-    {
-        markCpUtf8Entry(clazz, deprecatedAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute)
-    {
-        markCpUtf8Entry(clazz, syntheticAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute)
-    {
-        markCpUtf8Entry(clazz, signatureAttribute.u2attributeNameIndex);
-
-        markCpUtf8Entry(clazz, signatureAttribute.u2signatureIndex);
-    }
-
-
-    public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute)
-    {
-        markCpUtf8Entry(clazz, constantValueAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitMethodParametersAttribute(Clazz clazz, Method method, MethodParametersAttribute methodParametersAttribute)
-    {
-        markCpUtf8Entry(clazz, methodParametersAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the parameter information.
-        methodParametersAttribute.parametersAccept(clazz, method, this);
-    }
-
-
-    public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute)
-    {
-        markCpUtf8Entry(clazz, exceptionsAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
-    {
-        markCpUtf8Entry(clazz, codeAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the attributes.
-        codeAttribute.attributesAccept(clazz, method, this);
-    }
-
-
-    public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute)
-    {
-        markCpUtf8Entry(clazz, stackMapAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute)
-    {
-        markCpUtf8Entry(clazz, stackMapTableAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute)
-    {
-        markCpUtf8Entry(clazz, lineNumberTableAttribute.u2attributeNameIndex);
-    }
-
-
-    public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute)
-    {
-        markCpUtf8Entry(clazz, localVariableTableAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the local variables.
-        localVariableTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this);
-    }
-
-
-    public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute)
-    {
-        markCpUtf8Entry(clazz, localVariableTypeTableAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the local variable types.
-        localVariableTypeTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this);
-    }
-
-
-    public void visitAnyAnnotationsAttribute(Clazz clazz, AnnotationsAttribute annotationsAttribute)
-    {
-        markCpUtf8Entry(clazz, annotationsAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the annotations.
-        annotationsAttribute.annotationsAccept(clazz, this);
-    }
-
-
-    public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method, ParameterAnnotationsAttribute parameterAnnotationsAttribute)
-    {
-        markCpUtf8Entry(clazz, parameterAnnotationsAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the annotations.
-        parameterAnnotationsAttribute.annotationsAccept(clazz, method, this);
-    }
-
-
-    public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute)
-    {
-        markCpUtf8Entry(clazz, annotationDefaultAttribute.u2attributeNameIndex);
-
-        // Mark the UTF-8 entries referenced by the element value.
-        annotationDefaultAttribute.defaultValueAccept(clazz, this);
-    }
-
-
-    // Implementations for InnerClassesInfoVisitor.
-
-    public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo)
-    {
-        if (innerClassesInfo.u2innerNameIndex != 0)
-        {
-            markCpUtf8Entry(clazz, innerClassesInfo.u2innerNameIndex);
-        }
-    }
-
-
-    // Implementations for ParameterInfoVisitor.
-
-    public void visitParameterInfo(Clazz clazz, Method method, int parameterIndex, ParameterInfo parameterInfo)
-    {
-        if (parameterInfo.u2nameIndex != 0)
-        {
-            markCpUtf8Entry(clazz, parameterInfo.u2nameIndex);
-        }
-    }
-
-
-    // Implementations for LocalVariableInfoVisitor.
-
-    public void visitLocalVariableInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfo localVariableInfo)
-    {
-        markCpUtf8Entry(clazz, localVariableInfo.u2nameIndex);
-        markCpUtf8Entry(clazz, localVariableInfo.u2descriptorIndex);
-    }
-
-
-    // Implementations for LocalVariableTypeInfoVisitor.
-
-    public void visitLocalVariableTypeInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeInfo localVariableTypeInfo)
-    {
-        markCpUtf8Entry(clazz, localVariableTypeInfo.u2nameIndex);
-        markCpUtf8Entry(clazz, localVariableTypeInfo.u2signatureIndex);
-    }
-
-
-    // Implementations for AnnotationVisitor.
-
-    public void visitAnnotation(Clazz clazz, Annotation annotation)
-    {
-        markCpUtf8Entry(clazz, annotation.u2typeIndex);
-
-        // Mark the UTF-8 entries referenced by the element values.
-        annotation.elementValuesAccept(clazz, this);
-    }
-
-
-    // Implementations for ElementValueVisitor.
-
-    public void visitConstantElementValue(Clazz clazz, Annotation annotation, ConstantElementValue constantElementValue)
-    {
-        if (constantElementValue.u2elementNameIndex != 0)
-        {
-            markCpUtf8Entry(clazz, constantElementValue.u2elementNameIndex);
-        }
-
-        // Only the string constant element value refers to a UTF-8 entry.
-        if (constantElementValue.u1tag == ClassConstants.ELEMENT_VALUE_STRING_CONSTANT)
-        {
-            markCpUtf8Entry(clazz, constantElementValue.u2constantValueIndex);
-        }
-    }
-
-
-    public void visitEnumConstantElementValue(Clazz clazz, Annotation annotation, EnumConstantElementValue enumConstantElementValue)
-    {
-        if (enumConstantElementValue.u2elementNameIndex != 0)
-        {
-            markCpUtf8Entry(clazz, enumConstantElementValue.u2elementNameIndex);
-        }
-
-        markCpUtf8Entry(clazz, enumConstantElementValue.u2typeNameIndex);
-        markCpUtf8Entry(clazz, enumConstantElementValue.u2constantNameIndex);
-    }
-
-
-    public void visitClassElementValue(Clazz clazz, Annotation annotation, ClassElementValue classElementValue)
-    {
-        if (classElementValue.u2elementNameIndex != 0)
-        {
-            markCpUtf8Entry(clazz, classElementValue.u2elementNameIndex);
-        }
-
-        markCpUtf8Entry(clazz, classElementValue.u2classInfoIndex);
-    }
-
-
-    public void visitAnnotationElementValue(Clazz clazz, Annotation annotation, AnnotationElementValue annotationElementValue)
-    {
-        if (annotationElementValue.u2elementNameIndex != 0)
-        {
-            markCpUtf8Entry(clazz, annotationElementValue.u2elementNameIndex);
-        }
-
-        // Mark the UTF-8 entries referenced by the annotation.
-        annotationElementValue.annotationAccept(clazz, this);
-    }
-
-
-    public void visitArrayElementValue(Clazz clazz, Annotation annotation, ArrayElementValue arrayElementValue)
-    {
-        if (arrayElementValue.u2elementNameIndex != 0)
-        {
-            markCpUtf8Entry(clazz, arrayElementValue.u2elementNameIndex);
-        }
-
-        // Mark the UTF-8 entries referenced by the element values.
-        arrayElementValue.elementValuesAccept(clazz, annotation, this);
-    }
-
-
-    // Small utility methods.
-
-    /**
-     * Marks the given UTF-8 constant pool entry of the given class.
-     */
-    private void markCpUtf8Entry(Clazz clazz, int index)
-    {
-         markAsUsed((Utf8Constant)((ProgramClass)clazz).getConstant(index));
-    }
-
-
-    /**
-     * Marks the given VisitorAccepter as being used.
-     * In this context, the VisitorAccepter will be a Utf8Constant object.
-     */
-    private void markAsUsed(VisitorAccepter visitorAccepter)
-    {
-        visitorAccepter.setVisitorInfo(USED);
-    }
-
-
-    /**
-     * Returns whether the given VisitorAccepter has been marked as being used.
-     * In this context, the VisitorAccepter will be a Utf8Constant object.
-     */
-    private boolean isUsed(VisitorAccepter visitorAccepter)
-    {
-        return visitorAccepter.getVisitorInfo() == USED;
-    }
-
-
-    /**
-     * Removes all UTF-8 entries that are not marked as being used
-     * from the given constant pool.
-     * @return the new number of entries.
-     */
-    private int shrinkConstantPool(Constant[] constantPool, int length)
-    {
-        // Create a new index map, if necessary.
-        if (constantIndexMap.length < length)
-        {
-            constantIndexMap = new int[length];
-        }
-
-        int     counter = 1;
-        boolean isUsed  = false;
-
-        // Shift the used constant pool entries together.
-        for (int index = 1; index < length; index++)
-        {
-            Constant constant = constantPool[index];
-
-            // Is the constant being used? Don't update the flag if this is the
-            // second half of a long entry.
-            if (constant != null)
-            {
-                isUsed = constant.getTag() != ClassConstants.CONSTANT_Utf8 ||
-                         isUsed(constant);
-            }
-
-            if (isUsed)
-            {
-                // Remember the new index.
-                constantIndexMap[index] = counter;
-
-                // Shift the constant pool entry.
-                constantPool[counter++] = constant;
-            }
-            else
-            {
-                // Remember an invalid index.
-                constantIndexMap[index] = -1;
-            }
-        }
-
-        // Clear the remaining constant pool elements.
-        Arrays.fill(constantPool, counter, length, null);
-
-        return counter;
-    }
-}