org.apache.bcel.classfile

Class LineNumberTable

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

Field Summary
LineNumber[]	line_number_table
int	line_number_table_length

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

Method Summary
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()

Field Detail

line_number_table

private LineNumber[] line_number_table

line_number_table_length

private int line_number_table_length

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)

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.

Parameters: v Visitor object

copy

public Attribute copy(ConstantPool _constant_pool)

Returns: deep copy of this attribute

dump

public final void dump(DataOutputStream file)

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

Parameters: file Output file stream

Throws: IOException

getLineNumberTable

public final LineNumber[] getLineNumberTable()

Returns: Array of (pc offset, line number) pairs.

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