Package com.tonic.parser.attribute

Class Attribute

java.lang.Object

com.tonic.parser.attribute.Attribute

Direct Known Subclasses:

AnnotationDefaultAttribute, BootstrapMethodsAttribute, CodeAttribute, ConstantValueAttribute, DeprecatedAttribute, EnclosingMethodAttribute, ExceptionsAttribute, GenericAttribute, InnerClassesAttribute, LineNumberTableAttribute, LocalVariableTableAttribute, LocalVariableTypeTableAttribute, MethodParametersAttribute, ModuleAttribute, NestHostAttribute, NestMembersAttribute, PermittedSubclassesAttribute, RecordAttribute, RuntimeVisibleAnnotationsAttribute, RuntimeVisibleParameterAnnotationsAttribute, SignatureAttribute, SourceDebugExtensionAttribute, SourceFileAttribute, StackMapTableAttribute, SyntheticAttribute

public abstract class Attribute
extends Object

Abstract base for class-file attributes, attached to a class or a member.

Constructor Summary

Constructors

Constructor	Description
Attribute(String name, ClassFile hostClass, int nameIndex, int length)	Creates a class-level attribute.
Attribute(String name, MemberEntry parent, int nameIndex, int length)	Creates an attribute attached to a field or method.

Method Summary

Modifier and Type	Method	Description
static Attribute	get(ClassFile classFile, ConstPool constPool, MemberEntry parent)	Factory method to instantiate the appropriate Attribute subclass based on the attribute name.
abstract void	read(ClassFile classFile, int length)	Reads the attribute data from the class file.
String	toString()
abstract void	updateLength()	Recomputes the attribute length field from the current in-memory content.
void	write(DataOutputStream dos)	Writes the attribute to the output stream.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Attribute

public Attribute(String name,
                 MemberEntry parent,
                 int nameIndex,
                 int length)

Creates an attribute attached to a field or method.

Parameters:

name - the attribute name

parent - the member the attribute belongs to

nameIndex - constant-pool index of the name Utf8

length - the attribute length in bytes

Attribute

public Attribute(String name,
                 ClassFile hostClass,
                 int nameIndex,
                 int length)

Creates a class-level attribute.

Parameters:

name - the attribute name

hostClass - the class the attribute belongs to

nameIndex - constant-pool index of the name Utf8

length - the attribute length in bytes

Method Detail

read

public abstract void read(ClassFile classFile,
                          int length)

Reads the attribute data from the class file.

Parameters:

classFile - The ClassFile utility to read data.

length - The length of the attribute.

get

public static Attribute get(ClassFile classFile,
                            ConstPool constPool,
                            MemberEntry parent)

Factory method to instantiate the appropriate Attribute subclass based on the attribute name.

Parameters:

classFile - The ClassFile utility to read data.

constPool - The constant pool for resolving attribute names.

parent - The parent MemberEntry (e.g., FieldEntry, MethodEntry).

Returns:

An instance of the appropriate Attribute subclass.

write

public void write(DataOutputStream dos)
           throws IOException

Writes the attribute to the output stream.

Parameters:

dos - The output stream to write to

Throws:

IOException - If an I/O error occurs

updateLength

public abstract void updateLength()

Recomputes the attribute length field from the current in-memory content.

toString

public String toString()

Overrides:

toString in class Object