Package org.objectweb.asm
Class FieldWriter
java.lang.Object
org.objectweb.asm.FieldVisitor
org.objectweb.asm.FieldWriter
A
FieldVisitor
that generates a corresponding 'field_info' structure, as defined in the
Java Virtual Machine Specification (JVMS).- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final int
The access_flags field of the field_info JVMS structure.private int
The constantvalue_index field of the ConstantValue attribute of this field_info, or 0 if there is no ConstantValue attribute.private final int
The descriptor_index field of the field_info JVMS structure.private Attribute
The first non standard attribute of this field.private AnnotationWriter
The last runtime invisible annotation of this field.private AnnotationWriter
The last runtime invisible type annotation of this field.private AnnotationWriter
The last runtime visible annotation of this field.private AnnotationWriter
The last runtime visible type annotation of this field.private final int
The name_index field of the field_info JVMS structure.private int
The signature_index field of the Signature attribute of this field_info, or 0 if there is no Signature attribute.private final SymbolTable
Where the constants used in this FieldWriter must be stored.Fields inherited from class org.objectweb.asm.FieldVisitor
api, fv
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Constructor Summary
ConstructorsConstructorDescriptionFieldWriter
(SymbolTable symbolTable, int access, String name, String descriptor, String signature, Object constantValue) Constructs a newFieldWriter
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Method Summary
Modifier and TypeMethodDescription(package private) final void
collectAttributePrototypes
(Attribute.Set attributePrototypes) Collects the attributes of this field into the given set of attribute prototypes.(package private) int
Returns the size of the field_info JVMS structure generated by this FieldWriter.(package private) void
putFieldInfo
(ByteVector output) Puts the content of the field_info JVMS structure generated by this FieldWriter into the given ByteVector.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.visitTypeAnnotation
(int typeRef, TypePath typePath, String descriptor, boolean visible) Visits an annotation on the type of the field.
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Field Details
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symbolTable
Where the constants used in this FieldWriter must be stored. -
accessFlags
private final int accessFlagsThe access_flags field of the field_info JVMS structure. This field can contain ASM specific access flags, such asOpcodes.ACC_DEPRECATED
, which are removed when generating the ClassFile structure. -
nameIndex
private final int nameIndexThe name_index field of the field_info JVMS structure. -
descriptorIndex
private final int descriptorIndexThe descriptor_index field of the field_info JVMS structure. -
signatureIndex
private int signatureIndexThe signature_index field of the Signature attribute of this field_info, or 0 if there is no Signature attribute. -
constantValueIndex
private int constantValueIndexThe constantvalue_index field of the ConstantValue attribute of this field_info, or 0 if there is no ConstantValue attribute. -
lastRuntimeVisibleAnnotation
The last runtime visible annotation of this field. The previous ones can be accessed with theAnnotationWriter.previousAnnotation
field. May be null. -
lastRuntimeInvisibleAnnotation
The last runtime invisible annotation of this field. The previous ones can be accessed with theAnnotationWriter.previousAnnotation
field. May be null. -
lastRuntimeVisibleTypeAnnotation
The last runtime visible type annotation of this field. The previous ones can be accessed with theAnnotationWriter.previousAnnotation
field. May be null. -
lastRuntimeInvisibleTypeAnnotation
The last runtime invisible type annotation of this field. The previous ones can be accessed with theAnnotationWriter.previousAnnotation
field. May be null. -
firstAttribute
The first non standard attribute of this field. The next ones can be accessed with theAttribute.nextAttribute
field. May be null.WARNING: this list stores the attributes in the reverse order of their visit. firstAttribute is actually the last attribute visited in
visitAttribute(org.objectweb.asm.Attribute)
. TheputFieldInfo(org.objectweb.asm.ByteVector)
method writes the attributes in the order defined by this list, i.e. in the reverse order specified by the user.
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Constructor Details
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FieldWriter
FieldWriter(SymbolTable symbolTable, int access, String name, String descriptor, String signature, Object constantValue) Constructs a newFieldWriter
.- Parameters:
symbolTable
- where the constants used in this FieldWriter must be stored.access
- the field's access flags (seeOpcodes
).name
- the field's name.descriptor
- the field's descriptor (seeType
).signature
- the field's signature. May be null.constantValue
- the field's constant value. May be null.
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Method Details
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visitAnnotation
Description copied from class:FieldVisitor
Visits an annotation of the field.- Overrides:
visitAnnotation
in classFieldVisitor
- 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.
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visitTypeAnnotation
public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String descriptor, boolean visible) Description copied from class:FieldVisitor
Visits an annotation on the type of the field.- Overrides:
visitTypeAnnotation
in classFieldVisitor
- Parameters:
typeRef
- a reference to the annotated type. The sort of this type reference must beTypeReference.FIELD
. SeeTypeReference
.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.
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visitAttribute
Description copied from class:FieldVisitor
Visits a non standard attribute of the field.- Overrides:
visitAttribute
in classFieldVisitor
- Parameters:
attribute
- an attribute.
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visitEnd
public void visitEnd()Description copied from class:FieldVisitor
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.- Overrides:
visitEnd
in classFieldVisitor
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computeFieldInfoSize
int computeFieldInfoSize()Returns the size of the field_info JVMS structure generated by this FieldWriter. Also adds the names of the attributes of this field in the constant pool.- Returns:
- the size in bytes of the field_info JVMS structure.
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putFieldInfo
Puts the content of the field_info JVMS structure generated by this FieldWriter into the given ByteVector.- Parameters:
output
- where the field_info structure must be put.
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collectAttributePrototypes
Collects the attributes of this field into the given set of attribute prototypes.- Parameters:
attributePrototypes
- a set of attribute prototypes.
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