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LNATION / Rope-0.42 / lib / Rope / Factory.pm 

            

              
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package Rope::Factory;
use Factory::Sub;
use Coerce::Types::Standard;
use Rope::Pro;
my (%PRO);
BEGIN {
        %PRO = Rope::Pro->new;
}
sub import {
        my ($caller, $pkg, @types) = (scalar caller, @_);
        if (@types) {   
                Coerce::Types::Standard->import::into($caller, @types)
        }
        $PRO{keyword}($caller, 'factory', sub {
                my ($name, @factory) = @_;
                my ($meta, $ind, $fact, $exists, $extends) = (
                        Rope->get_meta($caller),
                        (! ref $factory[0] ? shift @factory : 0)
                );
                if ($meta->{properties}->{$name}) {
                        if ($meta->{properties}->{$name}->{fact}->[$ind]) {
                                $fact = $meta->{properties}->{$name}->{fact}->[$ind];
                                $exists = 1;
                        } else {
                                $fact = Factory::Sub->new();
                                $extends = 1;
                        }
                } else {
                        $fact = Factory::Sub->new();
                }
                while (@factory) {
                        my ($check, $cb) = (shift(@factory), shift(@factory));
                        if (ref $check eq 'CODE') {
                                unshift @factory, $cb if $cb;
                                $fact->add($check);
                        } else {
                                $fact->add(sub { $_[0];  }, @{$check}, $cb);
                        }
                }
                if ($extends) {
                        Rope->clear_property($caller, $name);
                        my $prop = $meta->{properties}->{$name};
                        push @{$prop->{fact}}, $fact;
                        push @{$prop->{after}}, sub { $fact->(@_) };
                        $caller->property($name, %{$prop});  
                } elsif (!$exists) {
                        $caller->property($name,
                                value => sub { $fact->(@_) },
                                initable => 0,
                                enumerable => 0,
                                writeable => 0,
                                fact => [$fact]
                        );
                }
        });
}
1;
__END__
=head1 NAME
Rope::Factory - Rope factory properties
=head1 VERSION
Version 0.42
=cut
=head1 SYNOPSIS
         
        package Knot;
        use Rope;
        use Rope::Autoload;
        use Rope::Factory qw/Str HashRef ArrayRef/;
        factory loop => (
                [Str] => sub {
                        return 'string';
                },
                [Str, Str] => sub {
                        return 'string string';
                },              
                [Str, HashRef, ArrayRef] => sub {
                        return 'string hashref arrayref'
                }
        );
        factory loop => (
                [Str, Str, Str] => sub {
                        return 'string string string';
                }
        );
        factory loop => 1 => (
                [Str] => sub {
                        return 'chained factory ' . $_[1];
                }
        );
        1;
...
        my $k = Knot->new();
        say $k->loop('abc'); # string;
=head1 Exports
=cut
=head2 factory
=cut
=head1 AUTHOR
LNATION, C<< <email at lnation.org> >>
=head1 BUGS
Please report any bugs or feature requests to C<bug-rope at rt.cpan.org>, or through
the web interface at L<https://rt.cpan.org/NoAuth/ReportBug.html?Queue=Rope>.  I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
    perldoc Rope
You can also look for information at:
=over 4
=item * RT: CPAN's request tracker (report bugs here)
L<https://rt.cpan.org/NoAuth/Bugs.html?Dist=Rope>
=item * CPAN Ratings
L<https://cpanratings.perl.org/d/Rope>
=item * Search CPAN
L<https://metacpan.org/release/Rope>
=back
=head1 ACKNOWLEDGEMENTS
=head1 LICENSE AND COPYRIGHT
This software is Copyright (c) 2023 by LNATION.
This is free software, licensed under:
  The Artistic License 2.0 (GPL Compatible)
=cut