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package Moose::Meta::Attribute::Native::Trait;
our $VERSION = '2.1405';
use Moose::Role;
use Module::Runtime 'require_module';
use Moose::Deprecated;
use Moose::Util 'throw_exception';
use Moose::Util::TypeConstraints;
requires '_helper_type';
before '_process_options' => sub {
my ( $self, $name, $options ) = @_;
$self->_check_helper_type( $options, $name );
};
sub _check_helper_type {
my ( $self, $options, $name ) = @_;
my $type = $self->_helper_type;
$options->{isa} = $type
unless exists $options->{isa};
my $isa;
my $isa_name;
if ( blessed( $options->{isa} )
&& $options->{isa}->can('does')
&& $options->{isa}->does('Specio::Constraint::Role::Interface') ) {
$isa = $options->{isa};
require Specio::Library::Builtins;
return if $isa->is_a_type_of( Specio::Library::Builtins::t($type) );
$isa_name = $isa->name() || $isa->description();
}
else {
$isa = Moose::Util::TypeConstraints::find_or_create_type_constraint(
$options->{isa} );
return if $isa->is_a_type_of($type);
$isa_name = $isa->name();
}
throw_exception( WrongTypeConstraintGiven => required_type => $type,
given_type => $isa_name,
attribute_name => $name,
params => $options
);
}
before 'install_accessors' => sub { (shift)->_check_handles_values };
sub _check_handles_values {
my $self = shift;
my %handles = $self->_canonicalize_handles;
for my $original_method ( values %handles ) {
my $name = $original_method->[0];
my $accessor_class = $self->_native_accessor_class_for($name);
( $accessor_class && $accessor_class->can('new') )
|| confess
"$name is an unsupported method type - $accessor_class";
}
}
around '_canonicalize_handles' => sub {
shift;
my $self = shift;
my $handles = $self->handles;
return unless $handles;
unless ( 'HASH' eq ref $handles ) {
throw_exception( HandlesMustBeAHashRef => instance => $self,
given_handles => $handles
);
}
return
map { $_ => $self->_canonicalize_handles_value( $handles->{$_} ) }
keys %$handles;
};
sub _canonicalize_handles_value {
my $self = shift;
my $value = shift;
if ( ref $value && 'ARRAY' ne ref $value ) {
throw_exception( InvalidHandleValue => instance => $self,
handle_value => $value
);
}
return ref $value ? $value : [$value];
}
around '_make_delegation_method' => sub {
my $next = shift;
my ( $self, $handle_name, $method_to_call ) = @_;
my ( $name, @curried_args ) = @$method_to_call;
my $accessor_class = $self->_native_accessor_class_for($name);
die "Cannot find an accessor class for $name"
unless $accessor_class && $accessor_class->can('new');
return $accessor_class->new(
name => $handle_name,
package_name => $self->associated_class->name,
delegate_to_method => $name,
attribute => $self,
is_inline => 1,
curried_arguments => \@curried_args,
root_types => [ $self->_root_types ],
);
};
sub _root_types {
return $_[0]->_helper_type;
}
sub _native_accessor_class_for {
my ( $self, $suffix ) = @_;
my $role
= 'Moose::Meta::Method::Accessor::Native::'
. $self->_native_type . '::'
. $suffix;
require_module($role);
return Moose::Meta::Class->create_anon_class(
superclasses =>
[ $self->accessor_metaclass, $self->delegation_metaclass ],
roles => [$role],
cache => 1,
)->name;
}
sub _build_native_type {
my $self = shift;
for my $role_name ( map { $_->name } $self->meta->calculate_all_roles ) {
return $1 if $role_name =~ /::Native::Trait::(\w+)$/;
}
throw_exception( CannotCalculateNativeType => instance => $self );
}
has '_native_type' => (
is => 'ro',
isa => 'Str',
lazy => 1,
builder => '_build_native_type',
);
no Moose::Role;
no Moose::Util::TypeConstraints;
1;
# ABSTRACT: Shared role for native delegation traits
__END__
=pod
=encoding UTF-8
=head1 NAME
Moose::Meta::Attribute::Native::Trait - Shared role for native delegation traits
=head1 VERSION
version 2.1405
=head1 BUGS
See L<Moose/BUGS> for details on reporting bugs.
=head1 SEE ALSO
Documentation for Moose native traits can be found in
L<Moose::Meta::Attribute::Native>.
=head1 AUTHORS
=over 4
=item *
Stevan Little <stevan.little@iinteractive.com>
=item *
Dave Rolsky <autarch@urth.org>
=item *
Jesse Luehrs <doy@tozt.net>
=item *
Shawn M Moore <code@sartak.org>
=item *
יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
=item *
Karen Etheridge <ether@cpan.org>
=item *
Florian Ragwitz <rafl@debian.org>
=item *
Hans Dieter Pearcey <hdp@weftsoar.net>
=item *
Chris Prather <chris@prather.org>
=item *
Matt S Trout <mst@shadowcat.co.uk>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2006 by Infinity Interactive, Inc..
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
|
