org.brains2b.struct.position

Class TokenPosition

java.lang.Object

org.brains2b.struct.position.TokenPosition

All Implemented Interfaces:

Position

public class TokenPosition
extends java.lang.Object
implements Position

TokenPosition is the simplest form of Position.

It tests if the token is present in the line and returns the start position. Tokens are case insensitive

It is kind of expensive to create a lot of these Objects so it is usually used through the PositionFactory

Version:

$Revision$ $Date$

Author:

dennis@brains2b.org

See Also:

PositionFactory

Constructor Summary

Constructors

Constructor and Description
TokenPosition(java.lang.String token) Constructor

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
int	getLength() get the length of the position returned by Position.getPosition(String, int)
int	getPosition(java.lang.String line, int begin) get a position in a line, not before begin or return -1
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

TokenPosition

public TokenPosition(java.lang.String token)

Constructor

Parameters:

token - String, the token that should be found

Throws:

java.lang.IllegalArgumentException - if token is null or an empty String

Method Detail

getPosition

public final int getPosition(java.lang.String line,
                             int begin)

get a position in a line, not before begin or return -1

Specified by:

getPosition in interface Position

Parameters:

line - String, the line to find the position in

begin - int, the location to start from

Returns:

int a position after begin, or -1

getLength

public final int getLength()

get the length of the position returned by Position.getPosition(String, int)

Specified by:

getLength in interface Position

Returns:

int length of the position, usually the length of the mark the position found, but can be 0

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object