net.sf.saxon.instruct
Class LocationMap

java.lang.Object
  net.sf.saxon.instruct.LocationMap

All Implemented Interfaces:

Serializable, LocationProvider

public class LocationMap
extends Object
implements LocationProvider, Serializable

A LocationMap allocates integer codes to (systemId, lineNumber) pairs. The integer codes are held inside an Expression object to track the location of the expression in the source code

See Also:

Serialized Form

Constructor Summary

LocationMap()

Method Summary

int	allocateLocationId(String module, int lineNumber) Allocate a location identifier to an expression
int	getLineNumber(int locationId) Get the line number corresponding to a locationId
String	getSystemId(int locationId) Get the system identifier corresponding to a locationId

Methods inherited from class java.lang.Object

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

Constructor Detail

LocationMap

public LocationMap()

Method Detail

allocateLocationId

public int allocateLocationId(String module,
                              int lineNumber)

Allocate a location identifier to an expression

getSystemId

public String getSystemId(int locationId)

Get the system identifier corresponding to a locationId

Specified by:

getSystemId in interface LocationProvider

Parameters:

locationId - identifier of the location in question (as passed down the Receiver pipeline)

Returns:

the URI of the document or module.

getLineNumber

public int getLineNumber(int locationId)

Get the line number corresponding to a locationId

Specified by:

getLineNumber in interface LocationProvider

Parameters:

locationId - identifier of the location in question (as passed down the Receiver pipeline)

Returns:

the line number within the document or module.