org.apache.bcel.classfile

Class LineNumberTable

java.lang.Object

org.apache.bcel.classfile.Attribute

org.apache.bcel.classfile.LineNumberTable

All Implemented Interfaces:

Serializable, Cloneable, Node

public final class LineNumberTable
extends Attribute

This class represents a table of line numbers for debugging purposes. This attribute is used by the Code attribute. It contains pairs of PCs and line numbers.

Version:

$Id: LineNumberTable.java 386056 2006-03-15 11:31:56Z tcurdt $

Author:

M. Dahm

See Also:

Code, LineNumber, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private LineNumber[]	line_number_table
private int	line_number_table_length

Fields inherited from class org.apache.bcel.classfile.Attribute

constant_pool, length, name_index, tag

Constructor Summary

Constructors

Constructor and Description
LineNumberTable(int name_index, int length, DataInputStream file, ConstantPool constant_pool) Construct object from file stream.
LineNumberTable(int name_index, int length, LineNumber[] line_number_table, ConstantPool constant_pool)
LineNumberTable(LineNumberTable c)

Method Summary

Methods

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.
Attribute	copy(ConstantPool _constant_pool)
void	dump(DataOutputStream file) Dump line number table attribute to file stream in binary format.
LineNumber[]	getLineNumberTable()
int	getSourceLine(int pos) Map byte code positions to source code lines.
int	getTableLength()
void	setLineNumberTable(LineNumber[] line_number_table)
String	toString()

Methods inherited from class org.apache.bcel.classfile.Attribute

addAttributeReader, clone, getConstantPool, getLength, getNameIndex, getTag, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex

Methods inherited from class java.lang.Object

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

Field Detail

line_number_table_length

private int line_number_table_length

line_number_table

private LineNumber[] line_number_table

Constructor Detail

LineNumberTable

public LineNumberTable(LineNumberTable c)

LineNumberTable

public LineNumberTable(int name_index,
               int length,
               LineNumber[] line_number_table,
               ConstantPool constant_pool)

LineNumberTable

LineNumberTable(int name_index,
               int length,
               DataInputStream file,
               ConstantPool constant_pool)
          throws IOException

Construct object from file stream.

Parameters:

name_index - Index of name

length - Content length in bytes

file - Input stream

constant_pool - Array of constants

Throws:

IOException

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

Specified by:

accept in class Attribute

Parameters:

v - Visitor object

dump

public final void dump(DataOutputStream file)
                throws IOException

Dump line number table attribute to file stream in binary format.

Overrides:

dump in class Attribute

Parameters:

file - Output file stream

Throws:

IOException

getLineNumberTable

public final LineNumber[] getLineNumberTable()

Returns:

Array of (pc offset, line number) pairs.

setLineNumberTable

public final void setLineNumberTable(LineNumber[] line_number_table)

Parameters:

line_number_table - the line number entries for this table

toString

public final String toString()

Overrides:

toString in class Attribute

Returns:

String representation.

getSourceLine

public int getSourceLine(int pos)

Map byte code positions to source code lines.

Parameters:

pos - byte code offset

Returns:

corresponding line in source code

copy

public Attribute copy(ConstantPool _constant_pool)

Specified by:

copy in class Attribute

Returns:

deep copy of this attribute

getTableLength

public final int getTableLength()