gi
Class Lexicon.Alphabet

java.lang.Object
  |
  +--gi.Lexicon.Expression
        |
        +--gi.Lexicon.Alphabet

Direct Known Subclasses:

Lexicon.Match, Lexicon.PosixClass, Lexicon.Range, Lexicon.UnicodeCategory

Enclosing class:

Lexicon

abstract static class Lexicon.Alphabet

extends Lexicon.Expression

This class implements an Expression denoting a set of characters.

Version:

1.0

Author:

© 1999-2000 Craig A. Rich <carich@acm.org>

Field Summary

(package private) Integer	accept The accept state of the NFA recognizing the language denoted by this Expression.
(package private) Integer	initial The initial state of the NFA recognizing the language denoted by this Expression.

Constructor Summary

(package private)

Lexicon.Alphabet()

Method Summary

(package private) abstract boolean	contains(char c) Indicates whether a character is in this Alphabet.
(package private) abstract Lexicon.Expression	copy() Creates a copy of this Expression.

Methods inherited from class java.lang.Object

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

Field Detail

accept

Integer accept

The accept state of the NFA recognizing the language denoted by this Expression.

initial

Integer initial

The initial state of the NFA recognizing the language denoted by this Expression.

Constructor Detail

Lexicon.Alphabet

Lexicon.Alphabet()

Method Detail

contains

abstract boolean contains(char c)

Indicates whether a character is in this Alphabet.

Parameters:

c - the character whose status is requested.

Returns:

true if c is in this Alphabet; false otherwise.

copy

abstract Lexicon.Expression copy()

Creates a copy of this Expression. The NFA recognizing the language denoted by this Expression is replicated.

Returns:

a copy of this Expression.