程序包 proguard.classfile.util

类 BranchTargetFinder

java.lang.Object

proguard.classfile.util.BranchTargetFinder

所有已实现的接口:

AttributeVisitor, ExceptionInfoVisitor, ConstantVisitor, InstructionVisitor

public class BranchTargetFinder
extends Object
implements AttributeVisitor, InstructionVisitor, ExceptionInfoVisitor, ConstantVisitor

This AttributeVisitor finds all instruction offsets, branch targets, and exception targets in the CodeAttribute instances that it visits.

字段概要

字段

修饰符和类型	字段	说明
static final int	NO_SUBROUTINE
static final int	UNKNOWN

构造器概要

构造器

构造器	说明
BranchTargetFinder()

方法概要

修饰符和类型	方法	说明
boolean	containsSubroutines()	Returns whether the method contains subroutines, in the CodeAttribute that was visited most recently.
boolean	isAfterBranch(int offset)	Returns whether the instruction at the given offset comes right after a definite branch instruction in the CodeAttribute that was visited most recently.
boolean	isBranchFallThrough(int offset)	Return whether the instruction at the given offset is a conditional branch fall-through.
boolean	isBranchOrigin(int offset)	Returns whether the instruction at the given offset is the origin of a branch instruction in the CodeAttribute that was visited most recently.
boolean	isBranchTarget(int offset)	Returns whether the instruction at the given offset is the target of a branch instruction in the CodeAttribute that was visited most recently.
boolean	isCreation(int offset)	Returns whether the instruction at the given offset creates a new, uninitialized object instance, in the CodeAttribute that was visited most recently.
boolean	isExceptionEnd(int offset)	Returns whether the instruction at the given offset is the end of an exception try block in the CodeAttribute that was visited most recently.
boolean	isExceptionHandler(int offset)	Returns whether the instruction at the given offset is the start of an exception handler in the CodeAttribute that was visited most recently.
boolean	isExceptionStart(int offset)	Returns whether the instruction at the given offset is the start of an exception try block 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, in the CodeAttribute that was visited most recently.
boolean	isInstruction(int offset)	Returns whether there is an instruction at the given offset in the CodeAttribute that was visited most recently.
boolean	isLeader(int offset)	Return whether the instruction at the given offset is a leader.
boolean	isSubroutine(int offset)	Returns whether the instruction at the given offset is part of a subroutine in the CodeAttribute that was visited most recently.
boolean	isSubroutineInvocation(int offset)	Returns whether the instruction at the given offset is a subroutine invocation in the CodeAttribute that was visited most recently.
boolean	isSubroutineReturning(int offset)	Returns whether the subroutine at the given offset is ever returning by means of a regular 'ret' instruction.
boolean	isSubroutineStart(int offset)	Returns whether the instruction at the given offset is the start of a subroutine in the CodeAttribute that was visited most recently.
boolean	isTarget(int offset)	Returns whether the instruction at the given offset is the target of any kind in the CodeAttribute that was visited most recently.
int	subroutineEnd(int offset)	Returns the offset after the subroutine at the given offset, in the CodeAttribute that was visited most recently.
int	subroutineStart(int offset)	Returns the start offset of the subroutine at the given offset, in the CodeAttribute that was visited most recently.
void	visitAnyAttribute(Clazz clazz, Attribute attribute)	Visits any Attribute instance.
void	visitAnyConstant(Clazz clazz, Constant constant)	Visits any Constant instance.
void	visitAnySwitchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SwitchInstruction switchInstruction)	Visits any SwitchInstruction instance.
void	visitBranchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, BranchInstruction branchInstruction)
void	visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
void	visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction)
void	visitExceptionInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, ExceptionInfo exceptionInfo)
void	visitMethodrefConstant(Clazz clazz, MethodrefConstant methodrefConstant)
void	visitSimpleInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SimpleInstruction simpleInstruction)
void	visitVariableInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VariableInstruction variableInstruction)

从类继承的方法 java.lang.Object

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

从接口继承的方法 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

从接口继承的方法 proguard.classfile.constant.visitor.ConstantVisitor

visitAnyMethodrefConstant, visitAnyRefConstant, visitClassConstant, visitDoubleConstant, visitDynamicConstant, visitFieldrefConstant, visitFloatConstant, visitIntegerConstant, visitInterfaceMethodrefConstant, visitInvokeDynamicConstant, visitLongConstant, visitMethodHandleConstant, visitMethodTypeConstant, visitModuleConstant, visitNameAndTypeConstant, visitPackageConstant, visitPrimitiveArrayConstant, visitStringConstant, visitUtf8Constant

从接口继承的方法 proguard.classfile.instruction.visitor.InstructionVisitor

visitAnyInstruction, visitLookUpSwitchInstruction, visitTableSwitchInstruction

字段详细资料

UNKNOWN

public static final int UNKNOWN

另请参阅:

• 常量字段值

NO_SUBROUTINE

public static final int NO_SUBROUTINE

另请参阅:

• 常量字段值

构造器详细资料

BranchTargetFinder

public BranchTargetFinder()

方法详细资料

isInstruction

public boolean isInstruction(int offset)

Returns whether there is an instruction at the given offset in the CodeAttribute that was visited most recently.

isCreation

public boolean isCreation(int offset)

Returns whether the instruction at the given offset creates a new, uninitialized object instance, in the CodeAttribute that was visited most recently.

isInitializer

public boolean isInitializer(int offset)

Returns whether the instruction at the given offset is the special invocation of an instance initializer, in the CodeAttribute that was visited most recently.

isTarget

public boolean isTarget(int offset)

Returns whether the instruction at the given offset is the target of any kind in the CodeAttribute that was visited most recently.

isBranchOrigin

public boolean isBranchOrigin(int offset)

Returns whether the instruction at the given offset is the origin of a branch instruction in the CodeAttribute that was visited most recently.

isBranchTarget

public boolean isBranchTarget(int offset)

Returns whether the instruction at the given offset is the target of a branch instruction in the CodeAttribute that was visited most recently.

isAfterBranch

public boolean isAfterBranch(int offset)

Returns whether the instruction at the given offset comes right after a definite branch instruction in the CodeAttribute that was visited most recently.

isExceptionStart

public boolean isExceptionStart(int offset)

Returns whether the instruction at the given offset is the start of an exception try block in the CodeAttribute that was visited most recently.

isExceptionEnd

public boolean isExceptionEnd(int offset)

Returns whether the instruction at the given offset is the end of an exception try block in the CodeAttribute that was visited most recently.

isExceptionHandler

public boolean isExceptionHandler(int offset)

Returns whether the instruction at the given offset is the start of an exception handler in the CodeAttribute that was visited most recently.

isSubroutineInvocation

public boolean isSubroutineInvocation(int offset)

Returns whether the instruction at the given offset is a subroutine invocation in the CodeAttribute that was visited most recently.

isSubroutineStart

public boolean isSubroutineStart(int offset)

Returns whether the instruction at the given offset is the start of a subroutine in the CodeAttribute that was visited most recently.

isSubroutine

public boolean isSubroutine(int offset)

Returns whether the instruction at the given offset is part of a subroutine in the CodeAttribute that was visited most recently.

isSubroutineReturning

public boolean isSubroutineReturning(int offset)

Returns whether the subroutine at the given offset is ever returning by means of a regular 'ret' instruction.

subroutineStart

public int subroutineStart(int offset)

Returns the start offset of the subroutine at the given offset, in the CodeAttribute that was visited most recently.

subroutineEnd

public int subroutineEnd(int offset)

Returns the offset after the subroutine at the given offset, in the CodeAttribute that was visited most recently.

containsSubroutines

public boolean containsSubroutines()

Returns whether the method contains subroutines, in the CodeAttribute that was visited most recently.

isBranchFallThrough

public boolean isBranchFallThrough(int offset)

Return whether the instruction at the given offset is a conditional branch fall-through.

isLeader

public boolean isLeader(int offset)

Return whether the instruction at the given offset is a leader.

visitAnyAttribute

public void visitAnyAttribute(Clazz clazz,
 Attribute attribute)

从接口复制的说明: AttributeVisitor

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

指定者:

visitAnyAttribute 在接口中 AttributeVisitor

visitCodeAttribute

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

指定者:

visitCodeAttribute 在接口中 AttributeVisitor

visitSimpleInstruction

public void visitSimpleInstruction(Clazz clazz,
 Method method,
 CodeAttribute codeAttribute,
 int offset,
 SimpleInstruction simpleInstruction)

指定者:

visitSimpleInstruction 在接口中 InstructionVisitor

visitConstantInstruction

public void visitConstantInstruction(Clazz clazz,
 Method method,
 CodeAttribute codeAttribute,
 int offset,
 ConstantInstruction constantInstruction)

指定者:

visitConstantInstruction 在接口中 InstructionVisitor

visitVariableInstruction

public void visitVariableInstruction(Clazz clazz,
 Method method,
 CodeAttribute codeAttribute,
 int offset,
 VariableInstruction variableInstruction)

指定者:

visitVariableInstruction 在接口中 InstructionVisitor

visitBranchInstruction

public void visitBranchInstruction(Clazz clazz,
 Method method,
 CodeAttribute codeAttribute,
 int offset,
 BranchInstruction branchInstruction)

指定者:

visitBranchInstruction 在接口中 InstructionVisitor

visitAnySwitchInstruction

public void visitAnySwitchInstruction(Clazz clazz,
 Method method,
 CodeAttribute codeAttribute,
 int offset,
 SwitchInstruction switchInstruction)

从接口复制的说明: InstructionVisitor

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

指定者:

visitAnySwitchInstruction 在接口中 InstructionVisitor

visitAnyConstant

public void visitAnyConstant(Clazz clazz,
 Constant constant)

从接口复制的说明: ConstantVisitor

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

指定者:

visitAnyConstant 在接口中 ConstantVisitor

visitMethodrefConstant

public void visitMethodrefConstant(Clazz clazz,
 MethodrefConstant methodrefConstant)

指定者:

visitMethodrefConstant 在接口中 ConstantVisitor

visitExceptionInfo

public void visitExceptionInfo(Clazz clazz,
 Method method,
 CodeAttribute codeAttribute,
 ExceptionInfo exceptionInfo)

指定者:

visitExceptionInfo 在接口中 ExceptionInfoVisitor