Class FieldVisitor

java.lang.Object
org.springframework.asm.FieldVisitor
Direct Known Subclasses:
FieldVisitorTee

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 Details

    • 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 Details

    • 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 Details

    • getDelegate

      public FieldVisitor getDelegate()
      The field visitor to which this visitor must delegate method calls. May be null.
      Returns:
      the field visitor to which this visitor must delegate method calls, or null.
    • 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.