org.multijava.util.classfile
Class GenericAttribute

java.lang.Object
  org.multijava.util.classfile.Attribute
      org.multijava.util.classfile.GenericAttribute

public class GenericAttribute

extends Attribute

This is an opaque attribute that lets you add an uninterpreted stream of bytes into an attribute in a class file. This can be used (for instance) to embed versioning or signatures into the class file or method.

Field Summary
private  byte[]	data
private  AsciiConstant	name

 

Constructor Summary

GenericAttribute(java.lang.String name, byte[] data)           Make up a new attribute

GenericAttribute(AsciiConstant name, java.io.DataInput in, ConstantPool cp)           Make up a new attribute

 

Method Summary
(package private)  java.lang.String	getName()           Returns the attribute's name
protected  int	getSize()           Returns the space in bytes used by this attribute in the classfile
protected  int	getTag()           Returns the attribute's tag
protected  void	resolveConstants(ConstantPool cp)           Insert or check location of constant value on constant pool
protected  void	write(ConstantPool cp, java.io.DataOutput out)           Write this class into the the file (out) getting data position from the constant pool

 

Methods inherited from class java.lang.Object

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

 

Field Detail

name

private AsciiConstant name

data

private byte[] data

GenericAttribute

public GenericAttribute(java.lang.String name,
                        byte[] data)

Make up a new attribute

Parameters:

name - Name to be associated with the attribute

data - stream of bytes to be placed with the attribute

GenericAttribute

public GenericAttribute(AsciiConstant name,
                        java.io.DataInput in,
                        ConstantPool cp)
                 throws java.io.IOException

Make up a new attribute

Parameters:

name - the attribute's name

in - the stream to read from

cp - the constant pool

Throws:

java.io.IOException - an io problem has occured

getTag

protected int getTag()

Returns the attribute's tag

getSize

protected int getSize()

Returns the space in bytes used by this attribute in the classfile

getName

java.lang.String getName()

Returns the attribute's name

resolveConstants

protected void resolveConstants(ConstantPool cp)

Insert or check location of constant value on constant pool

Parameters:

cp - the constant pool for this class

write

protected void write(ConstantPool cp,
                     java.io.DataOutput out)
              throws java.io.IOException

Write this class into the the file (out) getting data position from the constant pool

Parameters:

cp - the constant pool that contain all data

out - the file where to write this object info

Throws:

java.io.IOException - an io problem has occured