at.dms.classfile
Class LineNumberInfo

java.lang.Object
  at.dms.classfile.LineNumberInfo

All Implemented Interfaces:

AccessorContainer

public class LineNumberInfo
extends Object
implements AccessorContainer

VMS 4.7.8: Line Number Table Attribute. This attribute represents a mapping between he Java Virtual Machine code array and the line number in the original Java source file

Constructor Summary

LineNumberInfo(DataInput in, ConstantPool cp, Instruction[] insns)
Create an entry in the line number table from a class file stream

LineNumberInfo(short line, InstructionAccessor inst)
Create an entry in the line number table

Method Summary

InstructionAccessor	getInstruction() Returns the instruction where the line begins
int	getLine() Returns the line number in the source code
void	setInstruction(InstructionAccessor inst) Sets the instruction where the line begins
void	transformAccessors(AccessorTransformer transformer) Transforms targets (deferences to actual instructions).

Methods inherited from class java.lang.Object

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

Constructor Detail

LineNumberInfo

public LineNumberInfo(short line,
                      InstructionAccessor inst)

Create an entry in the line number table

Parameters:

line - the line number in the source code

inst - the instruction where the line begins

LineNumberInfo

public LineNumberInfo(DataInput in,
                      ConstantPool cp,
                      Instruction[] insns)
               throws IOException

Create an entry in the line number table from a class file stream

Parameters:

in - the stream to read from

cp - the constant pool

insns - (sparse) array of instructions

Throws:

IOException - an io problem has occured

Method Detail

transformAccessors

public void transformAccessors(AccessorTransformer transformer)
                        throws BadAccessorException

Transforms targets (deferences to actual instructions).

Specified by:

transformAccessors in interface AccessorContainer

Parameters:

transformer - the transformer used to transform accessors

Throws:

BadAccessorException

getLine

public int getLine()

Returns the line number in the source code

getInstruction

public InstructionAccessor getInstruction()

Returns the instruction where the line begins

setInstruction

public void setInstruction(InstructionAccessor inst)

Sets the instruction where the line begins