org.apache.bcel.classfile

Class LineNumber

java.lang.Object

org.apache.bcel.classfile.LineNumber

All Implemented Interfaces:

Cloneable, Node

public final class LineNumber
extends Object
implements Cloneable, Node

This class represents a (PC offset, line number) pair, i.e., a line number in the source that corresponds to a relative address in the byte code. This is used for debugging purposes.

See Also:

LineNumberTable

Constructor Summary

Constructors

Constructor and Description
LineNumber(int start_pc, int line_number)
LineNumber(LineNumber c) Initialize from another object.

Method Summary

Modifier and Type	Method and Description
void	accept(Visitor v) Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
LineNumber	copy()
void	dump(DataOutputStream file) Dump line number/pc pair to file stream in binary format.
int	getLineNumber()
int	getStartPC()
void	setLineNumber(int line_number)
void	setStartPC(int start_pc)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

LineNumber

public LineNumber(LineNumber c)

Initialize from another object.

Parameters:

c - the object to copy

LineNumber

public LineNumber(int start_pc,
                  int line_number)

Parameters:

start_pc - Program Counter (PC) corresponds to

line_number - line number in source file

Method Detail

accept

public void accept(Visitor v)

Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

Specified by:

accept in interface Node

Parameters:

v - Visitor object

dump

public void dump(DataOutputStream file)
          throws IOException

Dump line number/pc pair to file stream in binary format.

Parameters:

file - Output file stream

Throws:

IOException - if an I/O Exception occurs in writeShort

getLineNumber

public int getLineNumber()

Returns:

Corresponding source line

getStartPC

public int getStartPC()

Returns:

PC in code

setLineNumber

public void setLineNumber(int line_number)

Parameters:

line_number - the source line number

setStartPC

public void setStartPC(int start_pc)

Parameters:

start_pc - the pc for this line number

toString

public String toString()

Overrides:

toString in class Object

Returns:

String representation

copy

public LineNumber copy()

Returns:

deep copy of this object