proguard.optimize.info
Class ParameterUsageMarker

java.lang.Object
  proguard.classfile.util.SimplifiedVisitor
      proguard.optimize.info.ParameterUsageMarker

All Implemented Interfaces:

MemberVisitor

public class ParameterUsageMarker
extends SimplifiedVisitor
implements MemberVisitor

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

ParameterUsageMarker()

Method Summary

static int	getParameterSize(Method method) Returns the total size of the parameters.
static long	getUsedParameters(Method method) Returns which parameters are being used.
static boolean	isParameterUsed(Method method, int variableIndex) Returns whether the given parameter is being used.
static void	markParameterUsed(Method method, int variableIndex) Marks the given parameter as being used.
static void	markUsedParameters(Method method, long usedParameters) Marks the given parameters as being used.
void	visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod)
void	visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)

Methods inherited from class proguard.classfile.util.SimplifiedVisitor

visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotationDefaultAttribute, visitAnnotationElementValue, visitAnyAnnotationsAttribute, visitAnyAttribute, visitAnyClass, visitAnyConstant, visitAnyElementValue, visitAnyInstruction, visitAnyMember, visitAnyMethodrefConstant, visitAnyParameterAnnotationsAttribute, visitAnyRefConstant, visitAnyStackMapFrame, visitAnySwitchInstruction, visitAnyVerificationType, visitArrayElementValue, visitBranchInstruction, visitClassConstant, visitClassElementValue, visitCodeAttribute, visitConstantElementValue, visitConstantInstruction, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDoubleConstant, visitDoubleType, visitEnclosingMethodAttribute, visitEnumConstantElementValue, visitExceptionsAttribute, visitFieldrefConstant, visitFloatConstant, visitFloatType, visitFullFrame, visitInnerClassesAttribute, visitIntegerConstant, visitIntegerType, visitInterfaceMethodrefConstant, visitLessZeroFrame, visitLibraryClass, visitLibraryField, visitLibraryMember, visitLineNumberTableAttribute, visitLocalVariableTableAttribute, visitLocalVariableTypeTableAttribute, visitLongConstant, visitLongType, visitLookUpSwitchInstruction, visitMethodrefConstant, visitMoreZeroFrame, visitNameAndTypeConstant, visitNullType, visitObjectType, visitProgramClass, visitProgramField, visitProgramMember, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleParameterAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleParameterAnnotationsAttribute, visitSameOneFrame, visitSameZeroFrame, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSimpleInstruction, visitSourceDirAttribute, visitSourceFileAttribute, visitStackDoubleType, visitStackFloatType, visitStackIntegerType, visitStackLongType, visitStackMapAttribute, visitStackMapTableAttribute, visitStackNullType, visitStackObjectType, visitStackTopType, visitStackUninitializedThisType, visitStackUninitializedType, visitStringConstant, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitTableSwitchInstruction, visitTopType, visitUninitializedThisType, visitUninitializedType, visitUnknownAttribute, visitUtf8Constant, visitVariableInstruction, visitVariablesDoubleType, visitVariablesFloatType, visitVariablesIntegerType, visitVariablesLongType, visitVariablesNullType, visitVariablesObjectType, visitVariablesTopType, visitVariablesUninitializedThisType, visitVariablesUninitializedType

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

visitLibraryField, visitProgramField

Constructor Detail

ParameterUsageMarker

public ParameterUsageMarker()

Method Detail

visitProgramMethod

public void visitProgramMethod(ProgramClass programClass,
                               ProgramMethod programMethod)

Specified by:

visitProgramMethod in interface MemberVisitor

Overrides:

visitProgramMethod in class SimplifiedVisitor

visitLibraryMethod

public void visitLibraryMethod(LibraryClass libraryClass,
                               LibraryMethod libraryMethod)

Specified by:

visitLibraryMethod in interface MemberVisitor

Overrides:

visitLibraryMethod in class SimplifiedVisitor

getParameterSize

public static int getParameterSize(Method method)

Returns the total size of the parameters.

markParameterUsed

public static void markParameterUsed(Method method,
                                     int variableIndex)

Marks the given parameter as being used.

markUsedParameters

public static void markUsedParameters(Method method,
                                      long usedParameters)

Marks the given parameters as being used.

isParameterUsed

public static boolean isParameterUsed(Method method,
                                      int variableIndex)

Returns whether the given parameter is being used.

getUsedParameters

public static long getUsedParameters(Method method)

Returns which parameters are being used.