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-rw-r--r--lib/FLAT/Transition.pm66
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diff --git a/lib/FLAT/Transition.pm b/lib/FLAT/Transition.pm
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-package FLAT::Transition;
-use strict;
-use Carp;
-
-sub new {
- my ($pkg, @things) = @_;
- bless { map { $_ => 1 } @things }, $pkg;
-}
-
-sub does {
- my ($self, @things) = @_;
- return 1 if @things == 0;
- return !! grep $self->{$_}, @things;
-}
-
-sub add {
- my ($self, @things) = @_;
- @$self{@things} = (1) x @things;
-}
-
-sub delete {
- my ($self, @things) = @_;
- delete $self->{$_} for @things;
-}
-
-sub alphabet {
- my $self = shift;
- sort { $a cmp $b } keys %$self;
-}
-
-sub as_string {
- my $self = shift;
- join ",", map { length $_ ? $_ : "epsilon" } $self->alphabet;
-}
-
-1;
-
-__END__
-
-=head1 NAME
-
-FLAT::Transition - a transition base class.
-
-=head1 SYNOPSIS
-
-Default implementation of the Transition class, used to manage transitions
-from one state to others. This class is meant for internal use.
-
-=head1 USAGE
-
-used internally;
-
-=head1 AUTHORS & ACKNOWLEDGEMENTS
-
-FLAT is written by Mike Rosulek E<lt>mike at mikero dot comE<gt> and
-Brett Estrade E<lt>estradb at gmail dot comE<gt>.
-
-The initial version (FLAT::Legacy) by Brett Estrade was work towards an
-MS thesis at the University of Southern Mississippi.
-
-Please visit the Wiki at http://www.0x743.com/flat
-
-=head1 LICENSE
-
-This module is free software; you can redistribute it and/or modify it under
-the same terms as Perl itself.