org.antlr.runtime.tree

Interface PositionTrackingStream<T>

All Known Implementing Classes:

CommonTreeNodeStream

public interface PositionTrackingStream<T>

Method Summary

Modifier and Type	Method and Description
T	getKnownPositionElement(boolean allowApproximateLocation) Returns an element containing concrete information about the current position in the stream.
boolean	hasPositionInformation(T element) Determines if the specified element contains concrete position information.

Method Detail

getKnownPositionElement

T getKnownPositionElement(boolean allowApproximateLocation)

Returns an element containing concrete information about the current position in the stream.

Parameters:

allowApproximateLocation - if false, this method returns null if an element containing exact information about the current position is not available

hasPositionInformation

boolean hasPositionInformation(T element)

Determines if the specified element contains concrete position information.

Parameters:

element - the element to check

Returns:

true if element contains concrete position information, otherwise false