Package serp.bytecode

Class Attribute

java.lang.Object

serp.bytecode.Attributes

serp.bytecode.Attribute

All Implemented Interfaces:

BCEntity, VisitAcceptor

Direct Known Subclasses:

Annotations, BootstrapMethods, Code, ConstantValue, Deprecated, Exceptions, InnerClasses, LineNumberTable, LocalTable, SourceFile, Synthetic, UnknownAttribute

public abstract class Attribute
extends Attributes
implements VisitAcceptor

In bytecode attributes are used to represent anything that is not part of the class structure. This includes the source file name, code of methods, the line number table, etc. All attributes contain at a minimum an immutable name that also determines the attribute's type.

Field Summary

Fields

Modifier and Type	Field	Description
private int	_nameIndex
private Attributes	_owner

Constructor Summary

Constructors

Constructor	Description
Attribute(int nameIndex, Attributes owner)

Method Summary

Modifier and Type	Method	Description
(package private) static Attribute	create(String name, Attributes owner)	Create an attribute of the appropriate type based on the the attribute name.
(package private) Collection	getAttributesHolder()	Return the collection used to hold the attributes of this entity.
ClassLoader	getClassLoader()	Return the class loader to use when loading related classes.
(package private) int	getLength()	Return the length of the bytecode representation of this attribute in bytes, excluding the name index.
String	getName()	Return the name of this attribute.
int	getNameIndex()	Return the index in the ConstantPool of the UTF8Entry holding the name of this attribute.
Attributes	getOwner()	Return the Attributes that owns this attribute.
ConstantPool	getPool()	Return the constant pool of the current class.
Project	getProject()	Return the project of the current class.
(package private) void	invalidate()	Invalidate this attribute.
boolean	isValid()	Return false if this entity has been removed from its parent; in this case the results of any operations on the entity are undefined.
(package private) void	read(DataInput in, int length)	Read the attribute bytecode from the given stream, up to length bytes, excluding the name index.
(package private) void	read(Attribute other)	Copy the information from the given attribute to this one.
(package private) void	write(DataOutput out, int length)	Write the attribute bytecode to the given stream, up to length bytes, excluding the name index.

Methods inherited from class serp.bytecode.Attributes

addAttribute, addAttribute, clearAttributes, getAttribute, getAttributes, getAttributes, readAttributes, removeAttribute, removeAttribute, setAttributes, visitAttributes, writeAttributes

Methods inherited from class java.lang.Object

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

Methods inherited from interface serp.bytecode.visitor.VisitAcceptor

acceptVisit

Field Details

_nameIndex

private int _nameIndex

_owner

private Attributes _owner

Constructor Details

Attribute

Attribute(int nameIndex,
 Attributes owner)

Method Details

create

static Attribute create(String name,
 Attributes owner)

Create an attribute of the appropriate type based on the the attribute name.

getOwner

public Attributes getOwner()

Return the Attributes that owns this attribute. The entity might be a BCClass, BCField, BCMethod, or other attribute.

getNameIndex

public int getNameIndex()

Return the index in the ConstantPool of the UTF8Entry holding the name of this attribute.

getName

public String getName()

Return the name of this attribute.

getProject

public Project getProject()

Description copied from interface: BCEntity

Return the project of the current class.

Specified by:

getProject in interface BCEntity

getPool

public ConstantPool getPool()

Description copied from interface: BCEntity

Return the constant pool of the current class.

Specified by:

getPool in interface BCEntity

getClassLoader

public ClassLoader getClassLoader()

Description copied from interface: BCEntity

Return the class loader to use when loading related classes.

Specified by:

getClassLoader in interface BCEntity

isValid

public boolean isValid()

Description copied from interface: BCEntity

Return false if this entity has been removed from its parent; in this case the results of any operations on the entity are undefined.

Specified by:

isValid in interface BCEntity

getAttributesHolder

Collection getAttributesHolder()

Description copied from class: Attributes

Return the collection used to hold the attributes of this entity.

Specified by:

getAttributesHolder in class Attributes

invalidate

void invalidate()

Invalidate this attribute.

getLength

int getLength()

Return the length of the bytecode representation of this attribute in bytes, excluding the name index.

read

void read(Attribute other)

Copy the information from the given attribute to this one. Does nothing by default.

read

void read(DataInput in,
 int length)
   throws IOException

Read the attribute bytecode from the given stream, up to length bytes, excluding the name index. Does nothing by default.

Throws:

IOException

write

void write(DataOutput out,
 int length)
    throws IOException

Write the attribute bytecode to the given stream, up to length bytes, excluding the name index. Does nothing by default.

Throws:

IOException