## net.sf.saxon.tree
Class LineNumberMap

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

    public class LineNumberMap

extends java.lang.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

Copyright (c) Saxonica Limited. All rights reserved.