jellyj.classfile.javaclass
Class LineNumberTable

jellyj.classfile.javaclass.Attribute
  |
  +--jellyj.classfile.javaclass.LineNumberTable

public final class LineNumberTable
extends Attribute

This class is derived from Attribute and 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.

Author:
JellyJ Design Group
See Also: Code, LineNumber

Constructor Summary
 LineNumberTable()
          Empty constructor, all attributes have to be defined via `setXXX' methods.
 LineNumberTable(LineNumberTable c)
          Initialize from another object.
 LineNumberTable(int name_index, int length, LineNumber[] line_number_table, ConstantPool constant_pool)
           
 (package private) LineNumberTable(int name_index, int length, DataInputStream file, ConstantPool constant_pool)
          Construct object from file stream.

Method Summary
 voidaccept(Visitor v)
          Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
 final voiddump(DataOutputStream file)
          Dump line number table attribute to file stream in binary format.
 final ConstantPoolgetConstantPool()
           
 final LineNumber[]getLineNumberTable()
           
 final voidsetConstantPool(ConstantPool constant_pool)
           
 final voidsetLineNumberTable(LineNumber[] line_number_table)
           
 final StringtoString()
           

Methods inherited from class jellyj.classfile.javaclass.Attribute
getLength, getNameIndex, getTag, readAttribute, setLength, setNameIndex

Constructor Detail

LineNumberTable

public LineNumberTable()
Empty constructor, all attributes have to be defined via `setXXX' methods. Use at your own risk.

LineNumberTable

public LineNumberTable(LineNumberTable c)
Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical copy.

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 java.io.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
throw 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

dump

public final void dump(DataOutputStream file)
throws java.io.IOException
Dump line number table attribute to file stream in binary format.
Parameters:
file - Output file stream
throw IOException

getConstantPool

public final ConstantPool getConstantPool()
Returns: Constant pool used by this object.
See Also:
ConstantPool

getLineNumberTable

public final LineNumber[] getLineNumberTable()
Returns: Array of (pc offset, line number) pairs.

setConstantPool

public final void setConstantPool(ConstantPool constant_pool)
Parameters:
constant_pool - Constant pool to be used for this object.
See Also:
ConstantPool

setLineNumberTable

public final void setLineNumberTable(LineNumber[] line_number_table)
Parameters:
line_number_table.

toString

public final String toString()
Returns: String representation.

Association Links

to Class jellyj.classfile.javaclass.LineNumber

to Class jellyj.classfile.javaclass.ConstantPool