proguard.optimize.evaluation

Class VariableOptimizer

java.lang.Object

proguard.optimize.evaluation.VariableOptimizer

All Implemented Interfaces:

proguard.classfile.attribute.visitor.AttributeVisitor, proguard.classfile.attribute.visitor.LocalVariableInfoVisitor, proguard.classfile.attribute.visitor.LocalVariableTypeInfoVisitor

public class VariableOptimizer
extends java.lang.Object
implements proguard.classfile.attribute.visitor.AttributeVisitor, proguard.classfile.attribute.visitor.LocalVariableInfoVisitor, proguard.classfile.attribute.visitor.LocalVariableTypeInfoVisitor

This AttributeVisitor optimizes variable allocation based on their the liveness, in the code attributes that it visits.

Constructor Summary

Constructors

Constructor and Description
VariableOptimizer(boolean reuseThis) Creates a new VariableOptimizer.
VariableOptimizer(boolean reuseThis, proguard.classfile.visitor.MemberVisitor extraVariableMemberVisitor) Creates a new VariableOptimizer with an extra visitor.

Method Summary

Modifier and Type	Method and Description
void	visitAnyAttribute(proguard.classfile.Clazz clazz, proguard.classfile.attribute.Attribute attribute)
void	visitCodeAttribute(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute)
void	visitLocalVariableInfo(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, proguard.classfile.attribute.LocalVariableInfo localVariableInfo)
void	visitLocalVariableTableAttribute(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, proguard.classfile.attribute.LocalVariableTableAttribute localVariableTableAttribute)
void	visitLocalVariableTypeInfo(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, proguard.classfile.attribute.LocalVariableTypeInfo localVariableTypeInfo)
void	visitLocalVariableTypeTableAttribute(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, proguard.classfile.attribute.LocalVariableTypeTableAttribute localVariableTypeTableAttribute)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface proguard.classfile.attribute.visitor.AttributeVisitor

visitAnnotationDefaultAttribute, visitAnyAnnotationsAttribute, visitAnyParameterAnnotationsAttribute, visitAnyTypeAnnotationsAttribute, visitBootstrapMethodsAttribute, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitEnclosingMethodAttribute, visitExceptionsAttribute, visitInnerClassesAttribute, visitLineNumberTableAttribute, visitMethodParametersAttribute, visitModuleAttribute, visitModuleMainClassAttribute, visitModulePackagesAttribute, visitNestHostAttribute, visitNestMembersAttribute, visitPermittedSubclassesAttribute, visitRecordAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleParameterAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeInvisibleTypeAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleParameterAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitRuntimeVisibleTypeAnnotationsAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSourceDebugExtensionAttribute, visitSourceDirAttribute, visitSourceFileAttribute, visitStackMapAttribute, visitStackMapTableAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitUnknownAttribute

Constructor Detail

VariableOptimizer

public VariableOptimizer(boolean reuseThis)

Creates a new VariableOptimizer.

Parameters:

reuseThis - specifies whether the 'this' variable can be reused. Many JVMs for JME and IBM's JVMs for JSE can't handle such reuse.

VariableOptimizer

public VariableOptimizer(boolean reuseThis,
                         proguard.classfile.visitor.MemberVisitor extraVariableMemberVisitor)

Creates a new VariableOptimizer with an extra visitor.

Parameters:

reuseThis - specifies whether the 'this' variable can be reused. Many JVMs for JME and IBM's JVMs for JSE can't handle such reuse.

extraVariableMemberVisitor - an optional extra visitor for all removed variables.

Method Detail

visitAnyAttribute

public void visitAnyAttribute(proguard.classfile.Clazz clazz,
                              proguard.classfile.attribute.Attribute attribute)

Specified by:

visitAnyAttribute in interface proguard.classfile.attribute.visitor.AttributeVisitor

visitCodeAttribute

public void visitCodeAttribute(proguard.classfile.Clazz clazz,
                               proguard.classfile.Method method,
                               proguard.classfile.attribute.CodeAttribute codeAttribute)

Specified by:

visitCodeAttribute in interface proguard.classfile.attribute.visitor.AttributeVisitor

visitLocalVariableTableAttribute

public void visitLocalVariableTableAttribute(proguard.classfile.Clazz clazz,
                                             proguard.classfile.Method method,
                                             proguard.classfile.attribute.CodeAttribute codeAttribute,
                                             proguard.classfile.attribute.LocalVariableTableAttribute localVariableTableAttribute)

Specified by:

visitLocalVariableTableAttribute in interface proguard.classfile.attribute.visitor.AttributeVisitor

visitLocalVariableTypeTableAttribute

public void visitLocalVariableTypeTableAttribute(proguard.classfile.Clazz clazz,
                                                 proguard.classfile.Method method,
                                                 proguard.classfile.attribute.CodeAttribute codeAttribute,
                                                 proguard.classfile.attribute.LocalVariableTypeTableAttribute localVariableTypeTableAttribute)

Specified by:

visitLocalVariableTypeTableAttribute in interface proguard.classfile.attribute.visitor.AttributeVisitor

visitLocalVariableInfo

public void visitLocalVariableInfo(proguard.classfile.Clazz clazz,
                                   proguard.classfile.Method method,
                                   proguard.classfile.attribute.CodeAttribute codeAttribute,
                                   proguard.classfile.attribute.LocalVariableInfo localVariableInfo)

Specified by:

visitLocalVariableInfo in interface proguard.classfile.attribute.visitor.LocalVariableInfoVisitor

visitLocalVariableTypeInfo

public void visitLocalVariableTypeInfo(proguard.classfile.Clazz clazz,
                                       proguard.classfile.Method method,
                                       proguard.classfile.attribute.CodeAttribute codeAttribute,
                                       proguard.classfile.attribute.LocalVariableTypeInfo localVariableTypeInfo)

Specified by:

visitLocalVariableTypeInfo in interface proguard.classfile.attribute.visitor.LocalVariableTypeInfoVisitor