use warnings;
use metaclass;
-use Carp 'confess';
-use Scalar::Util 'blessed';
+use Moose::Util 'english_list';
+use Scalar::Util 'weaken', 'blessed';
-use Data::Dumper;
-
-our $VERSION = '0.01';
+our $VERSION = '0.79';
+$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
use base 'Moose::Meta::Role::Application';
+__PACKAGE__->meta->add_attribute('role' => (
+ reader => 'role',
+));
+
+__PACKAGE__->meta->add_attribute('class' => (
+ reader => 'class',
+));
+
sub apply {
my ($self, $role, $class) = @_;
+
+ # We need weak_ref in CMOP :(
+ weaken($self->{role} = $role);
+ weaken($self->{class} = $class);
+
$self->SUPER::apply($role, $class);
- $class->add_role($role);
+
+ $class->add_role($role);
+ $class->add_role_application($self);
}
sub check_role_exclusions {
my ($self, $role, $class) = @_;
if ($class->excludes_role($role->name)) {
- confess "Conflict detected: " . $class->name . " excludes role '" . $role->name . "'";
+ $class->throw_error("Conflict detected: " . $class->name . " excludes role '" . $role->name . "'");
}
foreach my $excluded_role_name ($role->get_excluded_roles_list) {
if ($class->does_role($excluded_role_name)) {
- confess "The class " . $class->name . " does the excluded role '$excluded_role_name'";
+ $class->throw_error("The class " . $class->name . " does the excluded role '$excluded_role_name'");
}
}
}
sub check_required_methods {
my ($self, $role, $class) = @_;
+
+ my @missing;
+ my @is_attr;
+
# NOTE:
# we might need to move this down below the
# the attributes so that we can require any
# the require methods stuff.
foreach my $required_method_name ($role->get_required_method_list) {
- unless ($class->find_method_by_name($required_method_name)) {
- confess "'" . $role->name . "' requires the method '$required_method_name' " .
- "to be implemented by '" . $class->name . "'";
- }
- else {
- # NOTE:
- # we need to make sure that the method is
- # not a method modifier, because those do
- # not satisfy the requirements ...
- my $method = $class->find_method_by_name($required_method_name);
-
- # check if it is a generated accessor ...
- (!$method->isa('Class::MOP::Method::Accessor'))
- || confess "'" . $role->name . "' requires the method '$required_method_name' " .
- "to be implemented by '" . $class->name . "', the method is only an attribute accessor";
-
- # NOTE:
- # All other tests here have been removed, they were tests
- # for overriden methods and before/after/around modifiers.
- # But we realized that for classes any overriden or modified
- # methods would be backed by a real method of that name
- # (and therefore meet the requirement). And for roles, the
- # overriden and modified methods are "in statis" and so would
- # not show up in this test anyway (and as a side-effect they
- # would not fufill the requirement, which is exactly what we
- # want them to do anyway).
- # - SL
+ if (!$class->find_method_by_name($required_method_name)) {
+
+ next if $self->is_aliased_method($required_method_name);
+
+ push @missing, $required_method_name;
}
}
+
+ return unless @missing;
+
+ my $error = '';
+
+ if (@missing) {
+ my $noun = @missing == 1 ? 'method' : 'methods';
+
+ my $list
+ = Moose::Util::english_list( map { q{'} . $_ . q{'} } @missing );
+
+ $error
+ .= q{'}
+ . $role->name
+ . "' requires the $noun $list "
+ . "to be implemented by '"
+ . $class->name . q{'};
+ }
+
+ $class->throw_error($error);
}
sub check_required_attributes {
-
+
}
sub apply_attributes {
next;
}
else {
- # NOTE:
- # this is kinda ugly ...
- if ($class->isa('Moose::Meta::Class')) {
- $class->_process_attribute(
- $attribute_name,
- %{$role->get_attribute($attribute_name)}
- );
- }
- else {
- $class->add_attribute(
- $attribute_name,
- $role->get_attribute($attribute_name)
- );
- }
+ $class->add_attribute(
+ $attribute_name,
+ $role->get_attribute($attribute_name)
+ );
}
}
}
sub apply_methods {
my ($self, $role, $class) = @_;
foreach my $method_name ($role->get_method_list) {
- # it if it has one already
- if ($class->has_method($method_name) &&
- # and if they are not the same thing ...
- $class->get_method($method_name)->body != $role->get_method($method_name)->body) {
- next;
+
+ unless ($self->is_method_excluded($method_name)) {
+ # it if it has one already
+ if ($class->has_method($method_name) &&
+ # and if they are not the same thing ...
+ $class->get_method($method_name)->body != $role->get_method($method_name)->body) {
+ next;
+ }
+ else {
+ # add it, although it could be overridden
+ $class->add_method(
+ $method_name,
+ $role->get_method($method_name)
+ );
+ }
}
- else {
- # add it, although it could be overriden
- $class->alias_method(
- $method_name,
+
+ if ($self->is_method_aliased($method_name)) {
+ my $aliased_method_name = $self->get_method_aliases->{$method_name};
+ # it if it has one already
+ if ($class->has_method($aliased_method_name) &&
+ # and if they are not the same thing ...
+ $class->get_method($aliased_method_name)->body != $role->get_method($method_name)->body) {
+ $class->throw_error("Cannot create a method alias if a local method of the same name exists");
+ }
+ $class->add_method(
+ $aliased_method_name,
$role->get_method($method_name)
);
}
# we must reset the cache here since
# we are just aliasing methods, otherwise
# the modifiers go wonky.
- $class->reset_package_cache_flag;
+ $class->reset_package_cache_flag;
}
sub apply_override_method_modifiers {
=head1 NAME
-Moose::Meta::Role::Application::ToClass
+Moose::Meta::Role::Application::ToClass - Compose a role into a class
=head1 DESCRIPTION
=head1 COPYRIGHT AND LICENSE
-Copyright 2006-2008 by Infinity Interactive, Inc.
+Copyright 2006-2009 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
projects / gitmo/Moose.git / blobdiff