Package proguard.evaluation

Class InitializationFinder

java.lang.Object

proguard.evaluation.InitializationFinder

All Implemented Interfaces:

AttributeVisitor, InstructionVisitor

public class InitializationFinder
extends Object
implements AttributeVisitor, InstructionVisitor

This AttributeVisitor links 'new' instructions and their corresponding initializers in the CodeAttribute instances that it visits.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	NONE

Constructor Summary

Constructors

Constructor	Description
InitializationFinder()	Creates a new InitializationFinder.
InitializationFinder(PartialEvaluator partialEvaluator, boolean runPartialEvaluator)	Creates a new InitializationFinder that will use the given partial evaluator.

Method Summary

Modifier and Type	Method	Description
int	creationOffset(int initializationOffset)	Returns the 'new' instruction offset at which the object instance is created that is initialized at the given offset.
boolean	isInitializedBefore(int offset, int stackEntryIndexBottom)	Returns whether the specified stack entry is initialized.
boolean	isInitializedBefore(int offset, InstructionOffsetValue creationOffsetValue)	Returns whether the given creation offset is initialized before the given offset.
boolean	isInitializer()	Returns whether the method is an instance initializer, in the CodeAttribute that was visited most recently.
boolean	isInitializer(int offset)	Returns whether the instruction at the given offset is the special invocation of an instance initializer.
boolean	isTopInitializedBefore(int offset, int stackEntryIndexTop)	Returns whether the specified stack entry is initialized.
int	superInitializationOffset()	Returns the instruction offset at which this initializer is calling the "super" or "this" initializer method, or NONE if it is not an initializer.
void	visitAnyAttribute(Clazz clazz, Attribute attribute)	Visits any Attribute instance.
void	visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)

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, 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

visitAnyInstruction, visitAnySwitchInstruction, visitBranchInstruction, visitConstantInstruction, visitLookUpSwitchInstruction, visitSimpleInstruction, visitTableSwitchInstruction, visitVariableInstruction

Field Details

NONE

public static final int NONE

See Also:

• Constant Field Values

Constructor Details

InitializationFinder

public InitializationFinder()

Creates a new InitializationFinder.

InitializationFinder

public InitializationFinder(PartialEvaluator partialEvaluator,
 boolean runPartialEvaluator)

Creates a new InitializationFinder that will use the given partial evaluator.

Parameters:

partialEvaluator - the evaluator to be used for the analysis.

runPartialEvaluator - specifies whether to run this evaluator on every code attribute that is visited.

Method Details

isInitializer

public boolean isInitializer()

Returns whether the method is an instance initializer, in the CodeAttribute that was visited most recently.

superInitializationOffset

public int superInitializationOffset()

Returns the instruction offset at which this initializer is calling the "super" or "this" initializer method, or NONE if it is not an initializer.

creationOffset

public int creationOffset(int initializationOffset)

Returns the 'new' instruction offset at which the object instance is created that is initialized at the given offset.

isInitializedBefore

public boolean isInitializedBefore(int offset,
 int stackEntryIndexBottom)

Returns whether the specified stack entry is initialized.

isTopInitializedBefore

public boolean isTopInitializedBefore(int offset,
 int stackEntryIndexTop)

Returns whether the specified stack entry is initialized.

isInitializedBefore

public boolean isInitializedBefore(int offset,
 InstructionOffsetValue creationOffsetValue)

Returns whether the given creation offset is initialized before the given offset.

isInitializer

public boolean isInitializer(int offset)

Returns whether the instruction at the given offset is the special invocation of an instance initializer.

visitAnyAttribute

public void visitAnyAttribute(Clazz clazz,
 Attribute attribute)

Description copied from interface: AttributeVisitor

Visits any Attribute instance. The more specific default implementations of this interface delegate to this method.

Specified by:

visitAnyAttribute in interface AttributeVisitor

visitCodeAttribute

public void visitCodeAttribute(Clazz clazz,
 Method method,
 CodeAttribute codeAttribute)

Specified by:

visitCodeAttribute in interface AttributeVisitor