proguard.classfile.editor

Class CodeAttributeEditor

java.lang.Object

proguard.classfile.editor.CodeAttributeEditor

All Implemented Interfaces:

LocalVariableTargetElementVisitor, TargetInfoVisitor, TypeAnnotationVisitor, StackMapFrameVisitor, VerificationTypeVisitor, AttributeVisitor, ExceptionInfoVisitor, LineNumberInfoVisitor, LocalVariableInfoVisitor, LocalVariableTypeInfoVisitor, InstructionVisitor

public class CodeAttributeEditor
extends java.lang.Object
implements AttributeVisitor, InstructionVisitor, ExceptionInfoVisitor, StackMapFrameVisitor, VerificationTypeVisitor, LineNumberInfoVisitor, LocalVariableInfoVisitor, LocalVariableTypeInfoVisitor, TypeAnnotationVisitor, TargetInfoVisitor, LocalVariableTargetElementVisitor

This AttributeVisitor accumulates specified changes to code, and then applies these accumulated changes to the code attributes that it visits.

The class also supports labels (label()) and exception handlers (catch_(int,int,int)) in replacement sequences. They provide local branch offsets inside the replacement sequences (CodeAttributeEditor.Label.offset()). For example, replacing a specified instruction in a method by a sequence of instructions, with the help of InstructionSequenceBuilder:

     Clazz         clazz         = ...
     Method        method        = ...
     CodeAttribute codeAttribute = ...
     int           offset        = ...

     CodeAttributeEditor codeAttributeEditor = new CodeAttributeEditor();

     InstructionSequenceBuilder builder =
         new InstructionSequenceBuilder(clazz);

     // Create labels and instructions.
     final CodeAttributeEditor.Label TRY_START = codeAttributeEditor.label();
     final CodeAttributeEditor.Label TRY_END   = codeAttributeEditor.label();
     final CodeAttributeEditor.Label CATCH_END = codeAttributeEditor.label();

     final CodeAttributeEditor.Label CATCH_EXCEPTION =
         codeAttributeEditor.catch_(TRY_START.offset(),
                                    TRY_END.offset(),
                                    constantPoolEditor.addClassConstant("java/lang/Exception", null));

     Instructions[] replacementInstructions = builder
         .label(TRY_START)
         ......
         .label(TRY_END)
         .goto_(CATCH_END.offset())
         .catch_(CATCH_EXCEPTION)
         ......
         .athrow()
         .label(CATCH_END)
         ......
         .instructions();

     // Prepare the editor for this code.
     codeAttributeEditor.reset(codeAttribute.u4codeLength);

     // Edit the code -- in this case, replace an instruction.
     codeAttributeEditor.replaceInstruction(offset, replacementInstructions);

     // Apply the changes.
     codeAttributeEditor.visitCodeAttribute(clazz, method, codeAttribute);
 

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CodeAttributeEditor.Label This pseudo-instruction represents a label that marks an instruction offset, for use in the context of the code attribute editor only.

Field Summary

Fields

Modifier and Type	Field and Description
boolean[]	deleted
Instruction[]	postInsertions
Instruction[]	preInsertions
Instruction[]	preOffsetInsertions
Instruction[]	replacements

Constructor Summary

Constructors

Constructor and Description
CodeAttributeEditor() Creates a new CodeAttributeEditor that automatically updates frame sizes and shrinks instructions.
CodeAttributeEditor(boolean updateFrameSizes, boolean shrinkInstructions) Creates a new CodeAttributeEditor.

Method Summary

Modifier and Type	Method and Description
CodeAttributeEditor.Label	catch_(int startOffset, int endOffset, int catchType) Creates a new catch instance that can be used as a pseudo-instruction to mark the start of an exception handler.
CodeAttributeEditor.Label	catch_(int identifier, int startOffset, int endOffset, int catchType) Creates a new catch instance that can be used as a pseudo-instruction to mark the start of an exception handler.
void	clearModifications(int instructionOffset) Clears all modifications of the instruction at the given offset.
void	deleteInstruction(int instructionOffset) Remembers to delete the instruction at the given offset.
void	extend(int codeLength) Extends the size of the accumulated code changes.
void	insertAfterInstruction(int instructionOffset, Instruction instruction) Remembers to place the given instruction right after the instruction at the given offset.
void	insertAfterInstruction(int instructionOffset, Instruction[] instructions) Remembers to place the given instructions right after the instruction at the given offset.
void	insertBeforeInstruction(int instructionOffset, Instruction instruction) Remembers to place the given instruction right before the instruction at the given offset.
void	insertBeforeInstruction(int instructionOffset, Instruction[] instructions) Remembers to place the given instructions right before the instruction at the given offset.
void	insertBeforeOffset(int instructionOffset, Instruction instruction) Remembers to place the given instruction right before the instruction at the given offset.
void	insertBeforeOffset(int instructionOffset, Instruction[] instructions) Remembers to place the given instructions right before the instruction at the given offset.
boolean	isModified() Returns whether the code has been modified in any way.
boolean	isModified(int instructionOffset) Returns whether the instruction at the given offset has been modified in any way.
CodeAttributeEditor.Label	label() Creates a new label that can be used as a pseudo-instruction to mark a local offset.
CodeAttributeEditor.Label	label(int identifier) Creates a new label that can be used as a pseudo-instruction to mark a local offset.
void	replaceInstruction(int instructionOffset, Instruction instruction) Remembers to replace the instruction at the given offset by the given instruction.
void	replaceInstruction(int instructionOffset, Instruction[] instructions) Remembers to replace the instruction at the given offset by the given instructions.
void	reset(int codeLength) Resets the accumulated code changes for a given anticipated maximum code length.
void	undeleteInstruction(int instructionOffset) Remembers not to delete the instruction at the given offset.
void	visitAnyAttribute(Clazz clazz, Attribute attribute) Visits any Attribute instance.
void	visitAnyStackMapFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, StackMapFrame stackMapFrame) Visits any StackMapFrame instance.
void	visitAnyTargetInfo(Clazz clazz, TypeAnnotation typeAnnotation, TargetInfo targetInfo) Visits any TargetInfo instance.
void	visitAnyTypeAnnotationsAttribute(Clazz clazz, TypeAnnotationsAttribute typeAnnotationsAttribute) Visits any TypeAnnotationsAttribute instance.
void	visitAnyVerificationType(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VerificationType verificationType) Visits any VerificationType instance.
void	visitBranchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, BranchInstruction branchInstruction)
void	visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
void	visitCodeAttribute0(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	visitFullFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, FullFrame fullFrame)
void	visitLineNumberInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberInfo lineNumberInfo)
void	visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute)
void	visitLocalVariableInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfo localVariableInfo)
void	visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute)
void	visitLocalVariableTargetElement(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, LocalVariableTargetInfo localVariableTargetInfo, LocalVariableTargetElement localVariableTargetElement)
void	visitLocalVariableTargetInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, LocalVariableTargetInfo localVariableTargetInfo)
void	visitLocalVariableTypeInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeInfo localVariableTypeInfo)
void	visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute)
void	visitLookUpSwitchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, LookUpSwitchInstruction lookUpSwitchInstruction)
void	visitMoreZeroFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, MoreZeroFrame moreZeroFrame)
void	visitOffsetTargetInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, TypeAnnotation typeAnnotation, OffsetTargetInfo offsetTargetInfo)
void	visitSameOneFrame(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SameOneFrame sameOneFrame)
void	visitSimpleInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SimpleInstruction simpleInstruction)
void	visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute)
void	visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute)
void	visitTableSwitchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, TableSwitchInstruction tableSwitchInstruction)
void	visitTypeAnnotation(Clazz clazz, TypeAnnotation typeAnnotation) Visits any TypeAnnotation instance.
void	visitUninitializedType(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, UninitializedType uninitializedType)
void	visitVariableInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, 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.attribute.visitor.AttributeVisitor

visitAnnotationDefaultAttribute, visitAnyAnnotationsAttribute, visitAnyParameterAnnotationsAttribute, visitBootstrapMethodsAttribute, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitEnclosingMethodAttribute, visitExceptionsAttribute, visitInnerClassesAttribute, 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, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitUnknownAttribute

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

visitAnyInstruction, visitAnySwitchInstruction

Methods inherited from interface proguard.classfile.attribute.preverification.visitor.StackMapFrameVisitor

visitLessZeroFrame, visitSameZeroFrame

Methods inherited from interface proguard.classfile.attribute.preverification.visitor.VerificationTypeVisitor

visitDoubleType, visitFloatType, visitIntegerType, visitLongType, visitNullType, visitObjectType, visitStackDoubleType, visitStackFloatType, visitStackIntegerType, visitStackLongType, visitStackNullType, visitStackObjectType, visitStackTopType, visitStackUninitializedThisType, visitStackUninitializedType, visitTopType, visitUninitializedThisType, visitVariablesDoubleType, visitVariablesFloatType, visitVariablesIntegerType, visitVariablesLongType, visitVariablesNullType, visitVariablesObjectType, visitVariablesTopType, visitVariablesUninitializedThisType, visitVariablesUninitializedType

Methods inherited from interface proguard.classfile.attribute.annotation.visitor.TypeAnnotationVisitor

visitTypeAnnotation, visitTypeAnnotation, visitTypeAnnotation, visitTypeAnnotation, visitTypeAnnotation

Methods inherited from interface proguard.classfile.attribute.annotation.target.visitor.TargetInfoVisitor

visitCatchTargetInfo, visitEmptyTargetInfo, visitEmptyTargetInfo, visitEmptyTargetInfo, visitFormalParameterTargetInfo, visitSuperTypeTargetInfo, visitThrowsTargetInfo, visitTypeArgumentTargetInfo, visitTypeParameterBoundTargetInfo, visitTypeParameterBoundTargetInfo, visitTypeParameterBoundTargetInfo, visitTypeParameterBoundTargetInfo, visitTypeParameterTargetInfo, visitTypeParameterTargetInfo

Field Detail

preOffsetInsertions

public Instruction[] preOffsetInsertions

preInsertions

public Instruction[] preInsertions

replacements

public Instruction[] replacements

postInsertions

public Instruction[] postInsertions

deleted

public boolean[] deleted

Constructor Detail

CodeAttributeEditor

public CodeAttributeEditor()

Creates a new CodeAttributeEditor that automatically updates frame sizes and shrinks instructions.

CodeAttributeEditor

public CodeAttributeEditor(boolean updateFrameSizes,
                           boolean shrinkInstructions)

Creates a new CodeAttributeEditor.

Parameters:

updateFrameSizes - specifies whether frame sizes of edited code should be updated.

shrinkInstructions - specifies whether added instructions should automatically be shrunk before being written.

Method Detail

reset

public void reset(int codeLength)

Resets the accumulated code changes for a given anticipated maximum code length. If necessary, the size may still be extended while editing the code, with extend(int).

Parameters:

codeLength - the length of the code that will be edited next.

extend

public void extend(int codeLength)

Extends the size of the accumulated code changes.

Parameters:

codeLength - the length of the code that will be edited next.

insertBeforeOffset

public void insertBeforeOffset(int instructionOffset,
                               Instruction instruction)

Remembers to place the given instruction right before the instruction at the given offset. Any branches to the existing instruction will land after the new instruction. Similarly, any try blocks that start at the existing instruction will not include the new instruction. However, any try blocks that end right before the existing instruction wil now include the new instruction.

Parameters:

instructionOffset - the offset of the instruction.

instruction - the new instruction.

insertBeforeInstruction

public void insertBeforeInstruction(int instructionOffset,
                                    Instruction instruction)

Remembers to place the given instruction right before the instruction at the given offset. Any branches to the existing instruction will also go to the new instruction. Similarly, any try blocks that include the existing instruction will also include the new instruction.

Parameters:

instructionOffset - the offset of the instruction.

instruction - the new instruction.

insertBeforeOffset

public void insertBeforeOffset(int instructionOffset,
                               Instruction[] instructions)

Remembers to place the given instructions right before the instruction at the given offset. Any branches to the existing instruction will land after the new instructions. Similarly, any try blocks that start at the existing instruction will not include the new instructions. However, any try blocks that end right before the existing instruction wil now include the new instructions.

Parameters:

instructionOffset - the offset of the instruction.

instructions - the new instructions.

insertBeforeInstruction

public void insertBeforeInstruction(int instructionOffset,
                                    Instruction[] instructions)

Remembers to place the given instructions right before the instruction at the given offset. Any branches to the existing instruction will also go to the new instructions. Similarly, any try blocks that include the existing instruction will also include the new instructions.

Parameters:

instructionOffset - the offset of the instruction.

instructions - the new instructions.

replaceInstruction

public void replaceInstruction(int instructionOffset,
                               Instruction instruction)

Remembers to replace the instruction at the given offset by the given instruction.

Parameters:

instructionOffset - the offset of the instruction to be replaced.

instruction - the new instruction.

replaceInstruction

public void replaceInstruction(int instructionOffset,
                               Instruction[] instructions)

Remembers to replace the instruction at the given offset by the given instructions.

Parameters:

instructionOffset - the offset of the instruction to be replaced.

instructions - the new instructions.

insertAfterInstruction

public void insertAfterInstruction(int instructionOffset,
                                   Instruction instruction)

Remembers to place the given instruction right after the instruction at the given offset.

Parameters:

instructionOffset - the offset of the instruction.

instruction - the new instruction.

insertAfterInstruction

public void insertAfterInstruction(int instructionOffset,
                                   Instruction[] instructions)

Remembers to place the given instructions right after the instruction at the given offset.

Parameters:

instructionOffset - the offset of the instruction.

instructions - the new instructions.

deleteInstruction

public void deleteInstruction(int instructionOffset)

Remembers to delete the instruction at the given offset.

Parameters:

instructionOffset - the offset of the instruction to be deleted.

undeleteInstruction

public void undeleteInstruction(int instructionOffset)

Remembers not to delete the instruction at the given offset.

Parameters:

instructionOffset - the offset of the instruction not to be deleted.

clearModifications

public void clearModifications(int instructionOffset)

Clears all modifications of the instruction at the given offset.

Parameters:

instructionOffset - the offset of the instruction to be deleted.

isModified

public boolean isModified()

Returns whether the code has been modified in any way.

isModified

public boolean isModified(int instructionOffset)

Returns whether the instruction at the given offset has been modified in any way.

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

visitCodeAttribute0

public void visitCodeAttribute0(Clazz clazz,
                                Method method,
                                CodeAttribute codeAttribute)

visitStackMapAttribute

public void visitStackMapAttribute(Clazz clazz,
                                   Method method,
                                   CodeAttribute codeAttribute,
                                   StackMapAttribute stackMapAttribute)

Specified by:

visitStackMapAttribute in interface AttributeVisitor

visitStackMapTableAttribute

public void visitStackMapTableAttribute(Clazz clazz,
                                        Method method,
                                        CodeAttribute codeAttribute,
                                        StackMapTableAttribute stackMapTableAttribute)

Specified by:

visitStackMapTableAttribute in interface AttributeVisitor

visitLineNumberTableAttribute

public void visitLineNumberTableAttribute(Clazz clazz,
                                          Method method,
                                          CodeAttribute codeAttribute,
                                          LineNumberTableAttribute lineNumberTableAttribute)

Specified by:

visitLineNumberTableAttribute in interface AttributeVisitor

visitLocalVariableTableAttribute

public void visitLocalVariableTableAttribute(Clazz clazz,
                                             Method method,
                                             CodeAttribute codeAttribute,
                                             LocalVariableTableAttribute localVariableTableAttribute)

Specified by:

visitLocalVariableTableAttribute in interface AttributeVisitor

visitLocalVariableTypeTableAttribute

public void visitLocalVariableTypeTableAttribute(Clazz clazz,
                                                 Method method,
                                                 CodeAttribute codeAttribute,
                                                 LocalVariableTypeTableAttribute localVariableTypeTableAttribute)

Specified by:

visitLocalVariableTypeTableAttribute in interface AttributeVisitor

visitAnyTypeAnnotationsAttribute

public void visitAnyTypeAnnotationsAttribute(Clazz clazz,
                                             TypeAnnotationsAttribute typeAnnotationsAttribute)

Description copied from interface: AttributeVisitor

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

Specified by:

visitAnyTypeAnnotationsAttribute in interface AttributeVisitor

visitSimpleInstruction

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

Specified by:

visitSimpleInstruction in interface InstructionVisitor

visitConstantInstruction

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

Specified by:

visitConstantInstruction in interface InstructionVisitor

visitVariableInstruction

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

Specified by:

visitVariableInstruction in interface InstructionVisitor

visitBranchInstruction

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

Specified by:

visitBranchInstruction in interface InstructionVisitor

visitTableSwitchInstruction

public void visitTableSwitchInstruction(Clazz clazz,
                                        Method method,
                                        CodeAttribute codeAttribute,
                                        int offset,
                                        TableSwitchInstruction tableSwitchInstruction)

Specified by:

visitTableSwitchInstruction in interface InstructionVisitor

visitLookUpSwitchInstruction

public void visitLookUpSwitchInstruction(Clazz clazz,
                                         Method method,
                                         CodeAttribute codeAttribute,
                                         int offset,
                                         LookUpSwitchInstruction lookUpSwitchInstruction)

Specified by:

visitLookUpSwitchInstruction in interface InstructionVisitor

visitExceptionInfo

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

Specified by:

visitExceptionInfo in interface ExceptionInfoVisitor

visitAnyStackMapFrame

public void visitAnyStackMapFrame(Clazz clazz,
                                  Method method,
                                  CodeAttribute codeAttribute,
                                  int offset,
                                  StackMapFrame stackMapFrame)

Description copied from interface: StackMapFrameVisitor

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

Specified by:

visitAnyStackMapFrame in interface StackMapFrameVisitor

visitSameOneFrame

public void visitSameOneFrame(Clazz clazz,
                              Method method,
                              CodeAttribute codeAttribute,
                              int offset,
                              SameOneFrame sameOneFrame)

Specified by:

visitSameOneFrame in interface StackMapFrameVisitor

visitMoreZeroFrame

public void visitMoreZeroFrame(Clazz clazz,
                               Method method,
                               CodeAttribute codeAttribute,
                               int offset,
                               MoreZeroFrame moreZeroFrame)

Specified by:

visitMoreZeroFrame in interface StackMapFrameVisitor

visitFullFrame

public void visitFullFrame(Clazz clazz,
                           Method method,
                           CodeAttribute codeAttribute,
                           int offset,
                           FullFrame fullFrame)

Specified by:

visitFullFrame in interface StackMapFrameVisitor

visitAnyVerificationType

public void visitAnyVerificationType(Clazz clazz,
                                     Method method,
                                     CodeAttribute codeAttribute,
                                     int offset,
                                     VerificationType verificationType)

Description copied from interface: VerificationTypeVisitor

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

Specified by:

visitAnyVerificationType in interface VerificationTypeVisitor

visitUninitializedType

public void visitUninitializedType(Clazz clazz,
                                   Method method,
                                   CodeAttribute codeAttribute,
                                   int offset,
                                   UninitializedType uninitializedType)

Specified by:

visitUninitializedType in interface VerificationTypeVisitor

visitLineNumberInfo

public void visitLineNumberInfo(Clazz clazz,
                                Method method,
                                CodeAttribute codeAttribute,
                                LineNumberInfo lineNumberInfo)

Specified by:

visitLineNumberInfo in interface LineNumberInfoVisitor

visitLocalVariableInfo

public void visitLocalVariableInfo(Clazz clazz,
                                   Method method,
                                   CodeAttribute codeAttribute,
                                   LocalVariableInfo localVariableInfo)

Specified by:

visitLocalVariableInfo in interface LocalVariableInfoVisitor

visitLocalVariableTypeInfo

public void visitLocalVariableTypeInfo(Clazz clazz,
                                       Method method,
                                       CodeAttribute codeAttribute,
                                       LocalVariableTypeInfo localVariableTypeInfo)

Specified by:

visitLocalVariableTypeInfo in interface LocalVariableTypeInfoVisitor

visitTypeAnnotation

public void visitTypeAnnotation(Clazz clazz,
                                TypeAnnotation typeAnnotation)

Description copied from interface: TypeAnnotationVisitor

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

Specified by:

visitTypeAnnotation in interface TypeAnnotationVisitor

visitAnyTargetInfo

public void visitAnyTargetInfo(Clazz clazz,
                               TypeAnnotation typeAnnotation,
                               TargetInfo targetInfo)

Description copied from interface: TargetInfoVisitor

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

Specified by:

visitAnyTargetInfo in interface TargetInfoVisitor

visitLocalVariableTargetInfo

public void visitLocalVariableTargetInfo(Clazz clazz,
                                         Method method,
                                         CodeAttribute codeAttribute,
                                         TypeAnnotation typeAnnotation,
                                         LocalVariableTargetInfo localVariableTargetInfo)

Specified by:

visitLocalVariableTargetInfo in interface TargetInfoVisitor

visitOffsetTargetInfo

public void visitOffsetTargetInfo(Clazz clazz,
                                  Method method,
                                  CodeAttribute codeAttribute,
                                  TypeAnnotation typeAnnotation,
                                  OffsetTargetInfo offsetTargetInfo)

Specified by:

visitOffsetTargetInfo in interface TargetInfoVisitor

visitLocalVariableTargetElement

public void visitLocalVariableTargetElement(Clazz clazz,
                                            Method method,
                                            CodeAttribute codeAttribute,
                                            TypeAnnotation typeAnnotation,
                                            LocalVariableTargetInfo localVariableTargetInfo,
                                            LocalVariableTargetElement localVariableTargetElement)

Specified by:

visitLocalVariableTargetElement in interface LocalVariableTargetElementVisitor

label

public CodeAttributeEditor.Label label()

Creates a new label that can be used as a pseudo-instruction to mark a local offset. Its offset can be used as a branch target in replacement instructions (CodeAttributeEditor.Label.offset()).

label

public CodeAttributeEditor.Label label(int identifier)

Creates a new label that can be used as a pseudo-instruction to mark a local offset. Its offset can be used as a branch target in replacement instructions (CodeAttributeEditor.Label.offset()).

catch_

public CodeAttributeEditor.Label catch_(int startOffset,
                                        int endOffset,
                                        int catchType)

Creates a new catch instance that can be used as a pseudo-instruction to mark the start of an exception handler. Its offset can be used as a branch target in replacement instructions (CodeAttributeEditor.Label.offset()).

catch_

public CodeAttributeEditor.Label catch_(int identifier,
                                        int startOffset,
                                        int endOffset,
                                        int catchType)

Creates a new catch instance that can be used as a pseudo-instruction to mark the start of an exception handler. Its offset can be used as a branch target in replacement instructions (CodeAttributeEditor.Label.offset()).