net.sf.saxon.tree
Class LineNumberMap

java.lang.Object
  net.sf.saxon.tree.LineNumberMap

public class LineNumberMap
extends Object

Line numbers are not held in nodes in the tree, because they are not usually needed. This class provides a map from element sequence numbers to line numbers: it is linked to the root node of the tree.

Author:

Michael H. Kay

Constructor Summary

LineNumberMap()
Create a LineNumberMap with an initial capacity of 200 nodes, which is expanded as necessary

Method Summary

int	getColumnNumber(int sequence) Get the column number corresponding to a given sequence number
int	getLineNumber(int sequence) Get the line number corresponding to a given sequence number
void	setLineAndColumn(int sequence, int line, int column) Set the line number corresponding to a given sequence number

Methods inherited from class java.lang.Object

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

Constructor Detail

LineNumberMap

public LineNumberMap()

Create a LineNumberMap with an initial capacity of 200 nodes, which is expanded as necessary

Method Detail

setLineAndColumn

public void setLineAndColumn(int sequence,
                             int line,
                             int column)

Set the line number corresponding to a given sequence number

Parameters:

sequence - the sequence number of the node

line - the line number position of the node

column - the column position of the node

getLineNumber

public int getLineNumber(int sequence)

Get the line number corresponding to a given sequence number

Parameters:

sequence - the sequence number held in the node

Returns:

the corresponding line number

getColumnNumber

public int getColumnNumber(int sequence)

Get the column number corresponding to a given sequence number

Parameters:

sequence - the sequence number held in the node

Returns:

the corresponding column number