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package Role::_Multiton; use strict; use warnings; $Role::_Multiton::VERSION = '0.2'; sub _get_multiton_lookup_hr { my ($self) = @_; my $class = ref($self) || $self || ''; no strict 'refs'; ## no critic return ${ $class . '::_multitons' } ||= {}; } sub _get_arg_key { my ($arg_ar) = @_; my $arg_key; if ( !defined $arg_ar ) { $arg_ar = []; } else { $arg_ar = [ map { $_ => $arg_ar->[0]{$_} } sort keys %{ $arg_ar->[0] } ] if @{$arg_ar} == 1 && ref( $arg_ar->[0] ) eq 'HASH'; } for my $arg ( @{$arg_ar} ) { if ( !defined $arg ) { $arg_key .= 'undef(),'; } elsif ( my $ref = ref($arg) ) { $arg_key .= "$ref($arg),"; # ? need to expand further or YAGNI ? } else { my $copy = $arg; $copy =~ s/'/\\'/g; $arg_key .= "'$copy',"; } } if ( defined $arg_key ) { $arg_key =~ s/,$//; return "($arg_key)"; } else { return '()'; } } 1; __END__ =encoding utf-8 =head1 NAME Role::_Multiton - internal util for Role::Multiton[::*] =head1 VERSION This document describes Role::_Multiton version 0.2 =head1 SYNOPSIS use Role::_Multiton (); # use all the things! =head1 DESCRIPTION Internal util for Role::Multiton[::*]. Don’t use directly as it could change in any way at any time. =head1 INTERFACE These are all functions. =head2 _get_multiton_lookup_hr() Takes a class or object whose multiton lookup you want. Instantiates (if needed) and returns the class’s multiton lookup. =head2 _get_arg_key() Takes an array ref of the values passed to new(). That array can contain a single hashref ins support of new({…}) style syntax. Returns a stringified version of those values to serve as a multiton’s identifier. =head1 DIAGNOSTICS Throws no warnings or errors of its own. =head1 CONFIGURATION AND ENVIRONMENT Role::_Multiton requires no configuration files or environment variables. =head1 DEPENDENCIES None =head1 INCOMPATIBILITIES None reported. =head1 BUGS AND LIMITATIONS No bugs have been reported. Please report any bugs or feature requests to C<bug-role-multiton@rt.cpan.org>, or through the web interface at L<http://rt.cpan.org>. =head1 AUTHOR Daniel Muey C<< <http://drmuey.com/cpan_contact.pl> >> =head1 LICENCE AND COPYRIGHT Copyright (c) 2013, Daniel Muey C<< <http://drmuey.com/cpan_contact.pl> >>. All rights reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See L<perlartistic>. =head1 DISCLAIMER OF WARRANTY BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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