Package org.jboss.byteman.agent.adapter

Class VariableAccessCheckAdapter.VariableAccessCheckMethodAdapter

java.lang.Object

org.objectweb.asm.MethodVisitor

org.jboss.byteman.agent.adapter.RuleMethodAdapter

org.jboss.byteman.agent.adapter.RuleCheckMethodAdapter

org.jboss.byteman.agent.adapter.VariableAccessCheckAdapter.VariableAccessCheckMethodAdapter

All Implemented Interfaces:

LocalScopeMethodVisitor

Enclosing class:

VariableAccessCheckAdapter

private class VariableAccessCheckAdapter.VariableAccessCheckMethodAdapter
extends RuleCheckMethodAdapter
implements LocalScopeMethodVisitor

a method visitor used to add a rule event trigger call to a method

Nested Class Summary

Nested classes/interfaces inherited from class org.jboss.byteman.agent.adapter.RuleMethodAdapter

RuleMethodAdapter.LocalVar

Field Summary

Fields

Modifier and Type	Field	Description
private int	access
private java.lang.String	descriptor
private java.lang.String[]	exceptions
private int	index
private java.lang.String	name
private java.lang.String	signature
private int	visitedCount

Fields inherited from class org.jboss.byteman.agent.adapter.RuleMethodAdapter

localVarsByName, rule, transformContext

Fields inherited from class org.objectweb.asm.MethodVisitor

api, mv

Constructor Summary

Constructors

Constructor	Description
VariableAccessCheckMethodAdapter(org.objectweb.asm.MethodVisitor mv, TransformContext transformContext, int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.String[] exceptions)

Method Summary

Modifier and Type	Method	Description
private boolean	matchCall(int opcode)
void	visitIincInsn(int var, int increment)
void	visitLocalScopeEnd(java.lang.String name, java.lang.String desc, java.lang.String signature, int stackSlot, int endOffset)	checks if the local var going out of scope is the one mentioned in the rule location and if so records that the slot is no longer active.
void	visitLocalScopeStart(java.lang.String name, java.lang.String desc, java.lang.String signature, int stackSlot, int startOffset)	checks if the local var coming into scope is the one mentioned in the rule location and if so records which slot is now being used to store the variable.
void	visitVarInsn(int opcode, int var)

Methods inherited from class org.jboss.byteman.agent.adapter.RuleCheckMethodAdapter

checkBindings, getNewTypeParamDescriptor, getReturnBindingType, isTriggerPoint, setTriggerPoint, visitEnd

Methods inherited from class org.jboss.byteman.agent.adapter.RuleMethodAdapter

getTriggerClassName, lookup, visitLocalVariable

Methods inherited from class org.objectweb.asm.MethodVisitor

visitAnnotableParameterCount, visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitFieldInsn, visitFrame, visitInsn, visitInsnAnnotation, visitIntInsn, visitInvokeDynamicInsn, visitJumpInsn, visitLabel, visitLdcInsn, visitLineNumber, visitLocalVariableAnnotation, visitLookupSwitchInsn, visitMaxs, 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

access

private int access

name

private java.lang.String name

descriptor

private java.lang.String descriptor

signature

private java.lang.String signature

exceptions

private java.lang.String[] exceptions

index

private int index

visitedCount

private int visitedCount

Constructor Detail

VariableAccessCheckMethodAdapter

VariableAccessCheckMethodAdapter(org.objectweb.asm.MethodVisitor mv,
                                 TransformContext transformContext,
                                 int access,
                                 java.lang.String name,
                                 java.lang.String descriptor,
                                 java.lang.String signature,
                                 java.lang.String[] exceptions)

Method Detail

matchCall

private boolean matchCall(int opcode)

visitLocalScopeStart

public void visitLocalScopeStart(java.lang.String name,
                                 java.lang.String desc,
                                 java.lang.String signature,
                                 int stackSlot,
                                 int startOffset)

checks if the local var coming into scope is the one mentioned in the rule location and if so records which slot is now being used to store the variable. this is called by the BMJSRInliner which feeds this adapter because this adapter implements LocalScopeMethodVisitor

Specified by:

visitLocalScopeStart in interface LocalScopeMethodVisitor

Parameters:

name -

desc -

signature -

stackSlot -

visitLocalScopeEnd

public void visitLocalScopeEnd(java.lang.String name,
                               java.lang.String desc,
                               java.lang.String signature,
                               int stackSlot,
                               int endOffset)

checks if the local var going out of scope is the one mentioned in the rule location and if so records that the slot is no longer active. this is called by the BMJSRInliner which feeds this adapter because this adapter implements LocalScopeMethodVisitor

Specified by:

visitLocalScopeEnd in interface LocalScopeMethodVisitor

Parameters:

name -

desc -

signature -

stackSlot -

visitVarInsn

public void visitVarInsn(int opcode,
                         int var)

Overrides:

visitVarInsn in class org.objectweb.asm.MethodVisitor

visitIincInsn

public void visitIincInsn(int var,
                          int increment)

Overrides:

visitIincInsn in class org.objectweb.asm.MethodVisitor