gi
Class Lexicon.UnicodeCategory

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

Enclosing class:

Lexicon

protected static class Lexicon.UnicodeCategory

extends Lexicon.Alphabet

This class implements an Expression denoting the set of characters in a Unicode category.

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.
private byte	category The Unicode category whose set is denoted.
(package private) Integer	initial The initial state of the NFA recognizing the language denoted by this Expression.

Constructor Summary

Lexicon.UnicodeCategory(byte category)
Constructs an Expression denoting the set of characters in a Unicode category.

Method Summary

(package private) boolean	contains(char c) Indicates whether a character is in the set denoted by this Expression.
(package private) 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

category

private final byte category

The Unicode category whose set is denoted.

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.UnicodeCategory

public Lexicon.UnicodeCategory(byte category)

Constructs an Expression denoting the set of characters in a Unicode category. An NFA recognizing the language denoted by this Expression is constructed. The class Character defines byte constants for each of the Unicode category types.

Parameters:

category - the Unicode category whose set is denoted.

See Also:

Character

Method Detail

contains

boolean contains(char c)

Indicates whether a character is in the set denoted by this Expression.

Specified by:

contains in class Lexicon.Alphabet

Parameters:

c - the character whose status is requested.

Returns:

true if c is in this UnicodeCategory; false otherwise.

copy

Lexicon.Expression copy()

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

Specified by:

copy in class Lexicon.Expression

Returns:

a copy of this Expression.