net.bytebuddy.asm

Class Advice.AdviceVisitor

java.lang.Object

org.objectweb.asm.MethodVisitor

net.bytebuddy.asm.Advice.AdviceVisitor

Direct Known Subclasses:

Advice.AdviceVisitor.WithExceptionHandling, Advice.AdviceVisitor.WithoutExceptionHandling

Enclosing class:

Advice

protected abstract static class Advice.AdviceVisitor
extends MethodVisitor

A method visitor that weaves the advise methods' byte codes.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	Advice.AdviceVisitor.CodeCopier A visitor for copying an advise method's byte code.
protected static class	Advice.AdviceVisitor.WithExceptionHandling An advise visitor that captures exceptions by weaving try-catch blocks around user code.
protected static class	Advice.AdviceVisitor.WithoutExceptionHandling An advise visitor that does not capture exceptions.

Field Summary

Fields

Modifier and Type	Field and Description
protected MethodDescription.InDefinedShape	instrumentedMethod A description of the instrumented method.

Fields inherited from class org.objectweb.asm.MethodVisitor

api, mv

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AdviceVisitor(MethodVisitor methodVisitor, MethodDescription.InDefinedShape instrumentedMethod, Advice.Dispatcher.Resolved.ForMethodEnter methodEnter, Advice.Dispatcher.Resolved.ForMethodExit methodExit, byte[] binaryRepresentation) Creates an advise visitor.

Method Summary

Modifier and Type	Method and Description
protected void	appendEnter() Appends the enter advise's byte code.
protected void	appendExit() Appends the exit advise's byte code.
protected abstract void	onMethodEnd() Writes the advise for completing the instrumented method.
protected abstract void	onMethodExit() Writes the advise for exiting the instrumented method.
protected abstract void	onMethodStart() Writes the advise for entering the instrumented method.
protected void	variable(int opcode) Access the first variable after the instrumented variables and return type are stored.
protected void	variable(int opcode, int offset) Access the first variable after the instrumented variables and return type are stored.
void	visitCode()
void	visitInsn(int opcode)
void	visitMaxs(int maxStack, int maxLocals)
void	visitVarInsn(int opcode, int offset)

Methods inherited from class org.objectweb.asm.MethodVisitor

visitAnnotation, visitAnnotationDefault, visitAttribute, visitEnd, visitFieldInsn, visitFrame, visitIincInsn, visitInsnAnnotation, visitIntInsn, visitInvokeDynamicInsn, visitJumpInsn, visitLabel, visitLdcInsn, visitLineNumber, visitLocalVariable, visitLocalVariableAnnotation, visitLookupSwitchInsn, visitMethodInsn, visitMethodInsn, visitMultiANewArrayInsn, visitParameter, visitParameterAnnotation, visitTableSwitchInsn, visitTryCatchAnnotation, visitTryCatchBlock, visitTypeAnnotation, visitTypeInsn

Methods inherited from class java.lang.Object

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

Field Detail

instrumentedMethod

protected final MethodDescription.InDefinedShape instrumentedMethod

A description of the instrumented method.

Constructor Detail

AdviceVisitor

protected AdviceVisitor(MethodVisitor methodVisitor,
                        MethodDescription.InDefinedShape instrumentedMethod,
                        Advice.Dispatcher.Resolved.ForMethodEnter methodEnter,
                        Advice.Dispatcher.Resolved.ForMethodExit methodExit,
                        byte[] binaryRepresentation)

Creates an advise visitor.

Parameters:

methodVisitor - The method visitor for the instrumented method.

instrumentedMethod - A description of the instrumented method.

methodEnter - The dispatcher to be used for method entry.

methodExit - The dispatcher to be used for method exit.

binaryRepresentation - The binary representation of the advise methods' class file.

Method Detail

visitCode

public void visitCode()

Overrides:

visitCode in class MethodVisitor

onMethodStart

protected abstract void onMethodStart()

Writes the advise for entering the instrumented method.

visitVarInsn

public void visitVarInsn(int opcode,
                         int offset)

Overrides:

visitVarInsn in class MethodVisitor

visitInsn

public void visitInsn(int opcode)

Overrides:

visitInsn in class MethodVisitor

onMethodExit

protected abstract void onMethodExit()

Writes the advise for exiting the instrumented method.

variable

protected void variable(int opcode)

Access the first variable after the instrumented variables and return type are stored.

Parameters:

opcode - The opcode for accessing the variable.

variable

protected void variable(int opcode,
                        int offset)

Access the first variable after the instrumented variables and return type are stored.

Parameters:

opcode - The opcode for accessing the variable.

offset - The additional offset of the variable.

visitMaxs

public void visitMaxs(int maxStack,
                      int maxLocals)

Overrides:

visitMaxs in class MethodVisitor

onMethodEnd

protected abstract void onMethodEnd()

Writes the advise for completing the instrumented method.

appendEnter

protected void appendEnter()

Appends the enter advise's byte code.

appendExit

protected void appendExit()

Appends the exit advise's byte code.