com.yahoo.fsa

Class FSA.State

java.lang.Object

com.yahoo.fsa.FSA.State

Enclosing class:

FSA

public static class FSA.State
extends Object

Thread local state object used to traverse a Finite-State Automaton.

Method Summary

Modifier and Type	Method and Description
ByteBuffer	data()
String	dataString()
void	delta(byte symbol)
void	delta(char chr)
void	delta(String string) Jumps ahead by string
void	deltaWord(String string) Jumps ahead by a word - if this is not the first word, it must be preceeded by space.
int	hash()
boolean	hasPerfectHash()
boolean	isFinal()
boolean	isStartState()
boolean	isValid()
ByteBuffer	lookup(String str)
boolean	peekDelta(byte symbol) Returns whether the given symbol would take us to a valid state, without changing the state
void	start()
boolean	tryDelta(byte symbol)
boolean	tryDelta(String string) Jumps ahead by string if that puts us into a valid state, does nothing otherwise
boolean	tryDeltaWord(String string) Tries to jump ahead by one word.

Methods inherited from class java.lang.Object

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

Method Detail

start

public void start()

delta

public void delta(byte symbol)

peekDelta

public boolean peekDelta(byte symbol)

Returns whether the given symbol would take us to a valid state, without changing the state

tryDelta

public boolean tryDelta(byte symbol)

delta

public void delta(char chr)

delta

public void delta(String string)

Jumps ahead by string

tryDelta

public boolean tryDelta(String string)

Jumps ahead by string if that puts us into a valid state, does nothing otherwise

Returns:

whether we jumped to a valid state (true) or di nothing (false)

deltaWord

public void deltaWord(String string)

Jumps ahead by a word - if this is not the first word, it must be preceeded by space.

tryDeltaWord

public boolean tryDeltaWord(String string)

Tries to jump ahead by one word. If the given string is not the next complete valid word, nothing is done.

isFinal

public boolean isFinal()

isStartState

public boolean isStartState()

isValid

public boolean isValid()

data

public ByteBuffer data()

dataString

public String dataString()

hash

public int hash()

lookup

public ByteBuffer lookup(String str)

hasPerfectHash

public boolean hasPerfectHash()