proguard.optimize.info

Class ParameterUsageMarker

java.lang.Object

proguard.optimize.info.ParameterUsageMarker

All Implemented Interfaces:

proguard.classfile.attribute.visitor.AttributeVisitor, proguard.classfile.instruction.visitor.InstructionVisitor, proguard.classfile.visitor.MemberVisitor

public class ParameterUsageMarker
extends java.lang.Object
implements proguard.classfile.visitor.MemberVisitor, proguard.classfile.attribute.visitor.AttributeVisitor, proguard.classfile.instruction.visitor.InstructionVisitor

This MemberVisitor counts the parameters and marks the used parameters of the methods that it visits. It also marks the 'this' parameters of methods that have hierarchies.

Constructor Summary

Constructors

Constructor and Description
ParameterUsageMarker() Creates a new ParameterUsageMarker.
ParameterUsageMarker(boolean markThisParameter, boolean markAllParameters) Creates a new ParameterUsageMarker that optionally marks all parameters.
ParameterUsageMarker(boolean markThisParameter, boolean markAllParameters, boolean analyzeCode) Creates a new ParameterUsageMarker that optionally marks all parameters.

Method Summary

Modifier and Type	Method and Description
static int	getParameterSize(proguard.classfile.Method method) Returns the total size of the parameters.
static long	getUsedParameters(proguard.classfile.Method method) Returns which parameters are being used.
static boolean	hasUnusedParameters(proguard.classfile.Method method) Returns whether the given method has any unused parameters.
static boolean	isParameterUsed(proguard.classfile.Method method, int variableIndex) Returns whether the given parameter is being used.
static void	markParameterUsed(proguard.classfile.Method method, int variableIndex) Marks the given parameter as being used.
void	visitAnyAttribute(proguard.classfile.Clazz clazz, proguard.classfile.attribute.Attribute attribute)
void	visitAnyInstruction(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, int offset, proguard.classfile.instruction.Instruction instruction)
void	visitCodeAttribute(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute)
void	visitLibraryMethod(proguard.classfile.LibraryClass libraryClass, proguard.classfile.LibraryMethod libraryMethod)
void	visitProgramMethod(proguard.classfile.ProgramClass programClass, proguard.classfile.ProgramMethod programMethod)
void	visitVariableInstruction(proguard.classfile.Clazz clazz, proguard.classfile.Method method, proguard.classfile.attribute.CodeAttribute codeAttribute, int offset, proguard.classfile.instruction.VariableInstruction variableInstruction)

Methods inherited from class java.lang.Object

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

Methods inherited from interface proguard.classfile.visitor.MemberVisitor

visitAnyMember, visitLibraryField, visitLibraryMember, visitProgramField, visitProgramMember

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

visitAnnotationDefaultAttribute, visitAnyAnnotationsAttribute, visitAnyParameterAnnotationsAttribute, visitAnyTypeAnnotationsAttribute, visitBootstrapMethodsAttribute, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitEnclosingMethodAttribute, visitExceptionsAttribute, visitInnerClassesAttribute, visitLineNumberTableAttribute, visitLocalVariableTableAttribute, visitLocalVariableTypeTableAttribute, 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

Methods inherited from interface proguard.classfile.instruction.visitor.InstructionVisitor

visitAnySwitchInstruction, visitBranchInstruction, visitConstantInstruction, visitLookUpSwitchInstruction, visitSimpleInstruction, visitTableSwitchInstruction

Constructor Detail

ParameterUsageMarker

public ParameterUsageMarker()

Creates a new ParameterUsageMarker.

ParameterUsageMarker

public ParameterUsageMarker(boolean markThisParameter,
                            boolean markAllParameters)

Creates a new ParameterUsageMarker that optionally marks all parameters.

Parameters:

markThisParameter - specifies whether all 'this' parameters should be marked as being used.

markAllParameters - specifies whether all other parameters should be marked as being used.

ParameterUsageMarker

public ParameterUsageMarker(boolean markThisParameter,
                            boolean markAllParameters,
                            boolean analyzeCode)

Creates a new ParameterUsageMarker that optionally marks all parameters.

Parameters:

markThisParameter - specifies whether all 'this' parameters should be marked as being used.

markAllParameters - specifies whether all other parameters should be marked as being used.

analyzeCode - specifies whether the code of visited methods should be analyzed for used parameters.

Method Detail

visitProgramMethod

public void visitProgramMethod(proguard.classfile.ProgramClass programClass,
                               proguard.classfile.ProgramMethod programMethod)

Specified by:

visitProgramMethod in interface proguard.classfile.visitor.MemberVisitor

visitLibraryMethod

public void visitLibraryMethod(proguard.classfile.LibraryClass libraryClass,
                               proguard.classfile.LibraryMethod libraryMethod)

Specified by:

visitLibraryMethod in interface proguard.classfile.visitor.MemberVisitor

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

visitAnyInstruction

public void visitAnyInstruction(proguard.classfile.Clazz clazz,
                                proguard.classfile.Method method,
                                proguard.classfile.attribute.CodeAttribute codeAttribute,
                                int offset,
                                proguard.classfile.instruction.Instruction instruction)

Specified by:

visitAnyInstruction in interface proguard.classfile.instruction.visitor.InstructionVisitor

visitVariableInstruction

public void visitVariableInstruction(proguard.classfile.Clazz clazz,
                                     proguard.classfile.Method method,
                                     proguard.classfile.attribute.CodeAttribute codeAttribute,
                                     int offset,
                                     proguard.classfile.instruction.VariableInstruction variableInstruction)

Specified by:

visitVariableInstruction in interface proguard.classfile.instruction.visitor.InstructionVisitor

getParameterSize

public static int getParameterSize(proguard.classfile.Method method)

Returns the total size of the parameters.

markParameterUsed

public static void markParameterUsed(proguard.classfile.Method method,
                                     int variableIndex)

Marks the given parameter as being used.

hasUnusedParameters

public static boolean hasUnusedParameters(proguard.classfile.Method method)

Returns whether the given method has any unused parameters.

isParameterUsed

public static boolean isParameterUsed(proguard.classfile.Method method,
                                      int variableIndex)

Returns whether the given parameter is being used.

getUsedParameters

public static long getUsedParameters(proguard.classfile.Method method)

Returns which parameters are being used.