Package org.datanucleus.enhancer.asm

Class FieldVisitor

java.lang.Object

org.datanucleus.enhancer.asm.FieldVisitor

public abstract class FieldVisitor
extends Object

A visitor to visit a Java field. The methods of this class must be called in the following order: ( visitAnnotation | visitTypeAnnotation | visitAttribute )* visitEnd.

Author:

Eric Bruneton

Field Summary

Fields

Modifier and Type	Field	Description
protected int	api	The ASM API version implemented by this visitor.
protected FieldVisitor	fv	The field visitor to which this visitor must delegate method calls.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FieldVisitor(int api)	Constructs a new FieldVisitor.
protected	FieldVisitor(int api, FieldVisitor fieldVisitor)	Constructs a new FieldVisitor.

Method Summary

Modifier and Type	Method	Description
AnnotationVisitor	visitAnnotation(String descriptor, boolean visible)	Visits an annotation of the field.
void	visitAttribute(Attribute attribute)	Visits a non standard attribute of the field.
void	visitEnd()	Visits the end of the field.
AnnotationVisitor	visitTypeAnnotation(int typeRef, TypePath typePath, String descriptor, boolean visible)	Visits an annotation on the type of the field.

Methods inherited from class java.lang.Object

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

Field Detail

api

protected final int api

The ASM API version implemented by this visitor. The value of this field must be one of the ASMx values in Opcodes.

fv

protected FieldVisitor fv

The field visitor to which this visitor must delegate method calls. May be null.

Constructor Detail

FieldVisitor

protected FieldVisitor(int api)

Constructs a new FieldVisitor.

Parameters:

api - the ASM API version implemented by this visitor. Must be one of the ASMx values in Opcodes.

FieldVisitor

protected FieldVisitor(int api,
                       FieldVisitor fieldVisitor)

Constructs a new FieldVisitor.

Parameters:

api - the ASM API version implemented by this visitor. Must be one of the ASMx values in Opcodes.

fieldVisitor - the field visitor to which this visitor must delegate method calls. May be null.

Method Detail

visitAnnotation

public AnnotationVisitor visitAnnotation(String descriptor,
                                         boolean visible)

Visits an annotation of the field.

Parameters:

descriptor - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitTypeAnnotation

public AnnotationVisitor visitTypeAnnotation(int typeRef,
                                             TypePath typePath,
                                             String descriptor,
                                             boolean visible)

Visits an annotation on the type of the field.

Parameters:

typeRef - a reference to the annotated type. The sort of this type reference must be TypeReference.FIELD. See TypeReference.

typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.

descriptor - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitAttribute

public void visitAttribute(Attribute attribute)

Visits a non standard attribute of the field.

Parameters:

attribute - an attribute.

visitEnd

public void visitEnd()

Visits the end of the field. This method, which is the last one to be called, is used to inform the visitor that all the annotations and attributes of the field have been visited.