According to the documentation for Moose::Exporter I would expect the
following two modules to be equivalent:
package TestMooseExporter;
use Moose ();
use Moose::Exporter;
Moose::Exporter->setup_import_methods(
with_meta => [qw(
hello
)],
also => "Moose",
base_class_roles => ["TestRole"],
);
sub hello {
my $meta = shift;
print "Hello, $meta->{package}\n";
}
1;
and
package TestMooseExporter;
use Moose ();
use Moose::Exporter;
use Moose::Util::MetaRole;
Moose::Exporter->setup_import_methods(
with_meta => [qw(
hello
)],
also => "Moose",
);
sub hello {
my $meta = shift;
print "Hello, $meta->{package}\n";
}
sub init_meta {
shift;
my %args = @_;
Moose->init_meta(%args);
Moose::Util::MetaRole::apply_base_class_roles(
for => $args{for_class},
roles => ['TestRole'],
);
return $args{for_class}->meta;
}
1;
But they are not. The second forces TestRole to be applied to any
class that uses the module, and the first does not.
Looking inside of Moose::Exporter::_make_init_meta I see the following
section of code that should set up the role:
Moose::Util::MetaRole::apply_base_class_roles(
for_class => $options{for_class},
%base_class_roles,
)
if Class::MOP::class_of( $options{for_class} )
->isa('Moose::Meta::Class');
I have no idea why that inline if is there, but it seems to be
preventing Moose from working like the documentation lead me to expect
it would.