Rocco Caputo > Reflex > Reflex::Role

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Module Version: 0.099   Source  

NAME ^

Reflex::Role - define a Reflex paramaterized role

VERSION ^

This document describes version 0.099, released on April 21, 2013.

SYNOPSIS ^

TODO - Changed again;

        package Reflex::Role::Streaming;
        use Reflex::Role;

        use Scalar::Util qw(weaken);

        attribute_parameter handle      => "handle";
        callback_parameter  cb_data     => qw( on handle data );
        callback_parameter  cb_error    => qw( on handle error );
        callback_parameter  cb_closed   => qw( on handle closed );
        method_parameter    method_put  => qw( put handle _ );
        method_parameter    method_stop => qw( stop handle _ );

        role {
                my $p = shift;

                my $h         = $p->handle();
                my $cb_error  = $p->cb_error();

                with 'Reflex::Role::Collectible';

                method-emit_and_stop $cb_error => $p->ev_error();

                with 'Reflex::Role::Reading' => {
                        handle      => $h,
                        cb_data     => $p->cb_data(),
                        cb_error    => $cb_error,
                        cb_closed   => $p->cb_closed(),
                };

                with 'Reflex::Role::Readable' => {
                        handle      => $h,
                        active      => 1,
                };

                with 'Reflex::Role::Writing' => {
                        handle      => $h,
                        cb_error    => $cb_error,
                        method_put  => $p->method_put(),
                };

                with 'Reflex::Role::Writable' => {
                        handle      => $h,
                };

                # Multiplex a single stop() to the sub-roles.
                method $p->method_stop() => sub {
                        my $self = shift;
                        $self->stop_handle_readable();
                        $self->stop_handle_writable();
                };
        };

        1;

DESCRIPTION ^

Reflex::Role defines a class as a Reflex parameterized role. It adds a few Reflex-specific exports to MooseX::Role::Parameterized.

It will be very helpful to understand the MooseX::Role::Parameterized declarations parameter, role and method before continuing. A basic familiarity with Moose::Role is also assumed.

ROLE PARAMETER DECLARATIONS

Reflex::Role adds a few declarations to MooseX::Role::Parameterized. The role parameter declarations define new parameters for Reflex roles. They're shorthands for MooseX::Role::Parameterized parameter declarations.

attribute_parameter

Synopsis:

        attribute_parameter attribute_name => "default_name";

attribute_parameter declares a role parameter that will accept an attribute name from the consumer. It also specifies a default attribute name.

attribute_parameter is a convenience declaration. The synopsis declaration is equivalent to this MooseX::Role::Parameterized syntax

        parameter attribute_name => (
                isa => 'Str',
                default => $default,
        );

callback_parameter

Synopsis:

        callback_parameter callback_name => qw( prefix attribute_param suffix);

callback_parameter declares a role parameter that will accept a callback method name. It alsp specifies a default method name, which is the catenation of a prefix, the value of an attribute parameter, and a suffix. A prefix or suffix of "_" will cause that segment of the default to be ignored.

callback_parameter is a convenience declaration. The synopsis is equivalent to this MooseX::Role::Parameterized syntax:

        parameter callback_name => (
                isa     => 'Str',
                lazy    => 1,
                default => sub {
                        join(
                                "_",
                                grep { defined() and $_ ne "_" }
                                $prefix, shift()->$attribute_param(), $suffix
                        )
                },
        );

method_parameter

Synopsis:

        method_parameter method_name => qw( prefix attribute_param suffix );

method_parameter declares a role parameter that will accept a method name from the consumer. It also specifies a default method name, which is the catenation of a prefix, the value of an attribute parameter, and a suffix. A prefix or suffix of "_" will cause that segment of the default to be ignored.

method_parameter is a convenience declaration. The synopsis is equivalent to this MooseX::Role::Parameterized syntax:

        parameter method_name => (
                isa => 'Str',
                lazy => 1,
                default => sub {
                        join(
                                "_",
                                grep { defined() and $_ ne "_" }
                                $prefix, shift()->$attribute_param(), $suffix
                        )
                },
        );

TODO ^

I'm looking for better names for Reflex::Role's exported declarations. Please suggest some.

EXAMPLES ^

Nearly everything in the Reflex::Role namespace.

SEE ALSO ^

Please see those modules/websites for more information related to this module.

BUGS AND LIMITATIONS ^

You can make new bug reports, and view existing ones, through the web interface at http://rt.cpan.org/Public/Dist/Display.html?Name=Reflex.

AUTHOR ^

Rocco Caputo <rcaputo@cpan.org>

COPYRIGHT AND LICENSE ^

This software is copyright (c) 2013 by Rocco Caputo.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

AVAILABILITY ^

The latest version of this module is available from the Comprehensive Perl Archive Network (CPAN). Visit http://www.perl.com/CPAN/ to find a CPAN site near you, or see https://metacpan.org/module/Reflex/.

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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