sysModel.classFile.attributes
Class AAttributeInfo

java.lang.Object
  sysModel.classFile.attributes.AAttributeInfo

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

CodeAttributeInfo, SourceFileAttributeInfo, UnknownAttributeInfo

public abstract class AAttributeInfo
extends java.lang.Object
implements java.lang.Cloneable

Abstract class file attribute.

Author:

Mathias Ricken

Field Summary

protected ConstantPool	_constantPool Constant pool.
protected byte[]	_data Attribute _data.
private static java.lang.Class[]	_knownAttributes Array with registered attributes.
protected AUTFPoolInfo	_name Attribute _name information.

Constructor Summary

AAttributeInfo(AUTFPoolInfo name, byte[] data, ConstantPool cp)
Constructor.

Method Summary

abstract void	adjustPC(short startPC, short deltaPC) Adjust program counter values contained in this attribute, starting at startPC, by adding deltaPC to them.
abstract <R,D> R	execute(IAttributeVisitor<R,D> visitor, D param) Execute a visitor on this attribute.
byte[]	getData() Accessor for data.
AUTFPoolInfo	getName() Accessor for _name information.
java.lang.Object	lone() Creates and returns a copy of this object.
static AAttributeInfo	read(java.io.DataInputStream di, ConstantPool pool) Read from stream and return unresolved constant pool object.
void	setData(byte[] data) Mutator for data.
void	setName(AUTFPoolInfo name) Mutator for _name information.
java.lang.String	toString() Return a human-readable version of this attribute.
abstract void	translatePC(short index, short deltaIndex, LineNumberTable oldLnt, LineNumberTable newLnt) Translate the program counter values contained in this attribute from an old line number table to a new one.
void	write(java.io.DataOutputStream dos) Write this attribute into a stream

Methods inherited from class java.lang.Object

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

Field Detail

_name

protected AUTFPoolInfo _name

Attribute _name information.

_data

protected byte[] _data

Attribute _data.

_constantPool

protected ConstantPool _constantPool

Constant pool.

_knownAttributes

private static java.lang.Class[] _knownAttributes

Array with registered attributes.

Constructor Detail

AAttributeInfo

public AAttributeInfo(AUTFPoolInfo name,
                      byte[] data,
                      ConstantPool cp)

Constructor.

Parameters:

name - attrobite name

data - attribute data

cp - constant pool

Method Detail

read

public static AAttributeInfo read(java.io.DataInputStream di,
                                  ConstantPool pool)
                           throws java.io.IOException,
                                  java.lang.ClassFormatError

Read from stream and return unresolved constant pool object.

Parameters:

di - stream

pool - constant pool

Returns:

attribute

Throws:

java.io.IOException

java.lang.ClassFormatError

getName

public AUTFPoolInfo getName()

Accessor for _name information.

Returns:

_name information

setName

public void setName(AUTFPoolInfo name)

Mutator for _name information.

Parameters:

name - _name information

getData

public byte[] getData()

Accessor for data.

Returns:

data data

setData

public void setData(byte[] data)

Mutator for data.

Parameters:

data - data

write

public void write(java.io.DataOutputStream dos)
           throws java.io.IOException

Write this attribute into a stream

Parameters:

dos - output stream

Throws:

java.io.IOException

toString

public java.lang.String toString()

Return a human-readable version of this attribute.

Overrides:

toString in class java.lang.Object

Returns:

string

execute

public abstract <R,D> R execute(IAttributeVisitor<R,D> visitor,
                                D param)

Execute a visitor on this attribute.

Parameters:

visitor - visitor

param - visitor-specific parameter

Returns:

visitor-specific return value

adjustPC

public abstract void adjustPC(short startPC,
                              short deltaPC)

Adjust program counter values contained in this attribute, starting at startPC, by adding deltaPC to them.

Parameters:

startPC - program counter to start at

deltaPC - change in program counter values

translatePC

public abstract void translatePC(short index,
                                 short deltaIndex,
                                 LineNumberTable oldLnt,
                                 LineNumberTable newLnt)

Translate the program counter values contained in this attribute from an old line number table to a new one.

Parameters:

index - critical point (insertion or deletion point)

deltaIndex - delta value to add to all old line numbers greater than the critical point

oldLnt - old line number table

newLnt - new line number table

lone

public java.lang.Object lone()
                      throws java.lang.CloneNotSupportedException

Creates and returns a copy of this object.

Returns:

a clone of this instance.

Throws:

java.lang.CloneNotSupportedException - if the object's class does not support the Cloneable interface.