package MooseX::Params::Meta::Parameter;
{
  $MooseX::Params::Meta::Parameter::VERSION = '0.010';
}

# ABSTRACT: The parameter metarole

use Moose;
use Package::Stash;

has 'name' =>
(
    is       => 'rw',
    isa      => 'Str',
    required => 1,
);

has 'type' =>
(
    is       => 'rw',
    isa      => 'Str',
    required => 1,
);

has 'index' =>
(
    is       => 'rw',
    isa      => 'Int',
    required => 1,
);

has 'constraint' =>
(
    is       => 'rw',
    isa      => 'Maybe[Str]',
    init_arg => 'isa',
);

has 'init_arg' =>
(
    is       => 'rw',
    isa      => 'Maybe[Str]',
);

has 'default' =>
(
    is => 'ro',
);

has 'does' =>
(
    is  => 'rw',
    isa => 'Str',
);

has 'coerce' =>
(
    is  => 'rw',
    isa => 'Bool',
);

has 'trigger' =>
(
    is  => 'rw',
    isa => 'CodeRef',
);

has 'required' =>
(
    is  => 'rw',
    isa => 'Bool',
);

has 'lazy' =>
(
    is  => 'rw',
    isa => 'Bool',
);

has 'weak_ref' =>
(
    is  => 'rw',
    isa => 'Bool',
);

has 'auto_deref' =>
(
    is  => 'rw',
    isa => 'Bool',
);

has 'slurpy' =>
(
    is      => 'rw',
    isa     => 'Bool',
);


has 'lazy_build' =>
(
    is      => 'rw',
    isa     => 'Bool',
    trigger => sub
    {
        my $self = shift;
        $self->lazy(1);
        $self->builder('_build_param_' . $self->name);
    }
);

has 'builder' =>
(
    is  => 'rw',
    isa => 'Maybe[Str]',
);

has 'builder_sub' =>
(
    is      => 'rw',
    isa     => 'CodeRef',
    lazy    => 1,
    default => sub
    {
        my $self = shift;

        my $default = $self->default;
        my $builder = $self->builder;
        if ($default and ref $default eq 'CODE')
        {
            return $default;
        }
        elsif ($builder)
        {
            my $stash = Package::Stash->new($self->package);
            return $stash->get_symbol("&$builder");
        }
        else
        {
            return;
        }
    },
);

has 'package' =>
(
    is  => 'rw',
    isa => 'Str',
);

has 'documentation' =>
(
    is  => 'rw',
    isa => 'Str',
);

no Moose;

1;


__END__
=pod

=for :stopwords Peter Shangov TODO invocant isa metaroles metarole multimethods sourcecode
backwards buildargs checkargs slurpy preprocess

=head1 NAME

MooseX::Params::Meta::Parameter - The parameter metarole

=head1 VERSION

version 0.010

=head1 AUTHOR

Peter Shangov <pshangov@yahoo.com>

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2012 by Peter Shangov.

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

=cut