use warnings;
use metaclass;
-use Carp 'confess';
-use Scalar::Util 'blessed';
+use Moose::Util 'english_list';
+use Scalar::Util 'blessed';
-use Data::Dumper;
-
-our $VERSION = '0.01';
+our $VERSION = '0.63';
+$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
use base 'Moose::Meta::Role::Application';
+sub apply {
+ my ($self, $role, $class) = @_;
+ $self->SUPER::apply($role, $class);
+ $class->add_role($role);
+}
+
+sub check_role_exclusions {
+ my ($self, $role, $class) = @_;
+ if ($class->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)) {
+ $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
+ # attribute accessors. However I am thinking
+ # that maybe those are somehow exempt from
+ # the require methods stuff.
+ foreach my $required_method_name ($role->get_required_method_list) {
+
+ if (!$class->find_method_by_name($required_method_name)) {
+
+ next if $self->is_aliased_method($required_method_name);
+
+ push @missing, $required_method_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 ...
+ push @is_attr, $required_method_name,
+ if $method->isa('Class::MOP::Method::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
+ }
+ }
+
+ return unless @missing || @is_attr;
+
+ 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{'};
+ }
+
+ if (@is_attr) {
+ my $noun = @is_attr == 1 ? 'method' : 'methods';
+
+ my $list
+ = Moose::Util::english_list( map { q{'} . $_ . q{'} } @is_attr );
+
+ $error .= "\n" if length $error;
+
+ $error
+ .= q{'}
+ . $role->name
+ . "' requires the $noun $list "
+ . "to be implemented by '"
+ . $class->name
+ . "' but the method is only an attribute accessor";
+ }
+
+ $class->throw_error($error);
+}
+
+sub check_required_attributes {
+
+}
+
+sub apply_attributes {
+ my ($self, $role, $class) = @_;
+ foreach my $attribute_name ($role->get_attribute_list) {
+ # it if it has one already
+ if ($class->has_attribute($attribute_name) &&
+ # make sure we haven't seen this one already too
+ $class->get_attribute($attribute_name) != $role->get_attribute($attribute_name)) {
+ next;
+ }
+ else {
+ $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) {
+
+ 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 overriden
+ $class->add_method(
+ $method_name,
+ $role->get_method($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.
+ $class->reset_package_cache_flag;
+}
+
+sub apply_override_method_modifiers {
+ my ($self, $role, $class) = @_;
+ foreach my $method_name ($role->get_method_modifier_list('override')) {
+ # it if it has one already then ...
+ if ($class->has_method($method_name)) {
+ next;
+ }
+ else {
+ # if this is not a role, then we need to
+ # find the original package of the method
+ # so that we can tell the class were to
+ # find the right super() method
+ my $method = $role->get_override_method_modifier($method_name);
+ my ($package) = Class::MOP::get_code_info($method);
+ # if it is a class, we just add it
+ $class->add_override_method_modifier($method_name, $method, $package);
+ }
+ }
+}
+
+sub apply_method_modifiers {
+ my ($self, $modifier_type, $role, $class) = @_;
+ my $add = "add_${modifier_type}_method_modifier";
+ my $get = "get_${modifier_type}_method_modifiers";
+ foreach my $method_name ($role->get_method_modifier_list($modifier_type)) {
+ $class->$add(
+ $method_name,
+ $_
+ ) foreach $role->$get($method_name);
+ }
+}
+
1;
__END__
=head1 NAME
-Moose::Meta::Role::Application::ToClass
+Moose::Meta::Role::Application::ToClass - Compose a role into a class
=head1 DESCRIPTION
=item B<meta>
+=item B<apply>
+
+=item B<check_role_exclusions>
+
+=item B<check_required_methods>
+
+=item B<check_required_attributes>
+
+=item B<apply_attributes>
+
+=item B<apply_methods>
+
+=item B<apply_method_modifiers>
+
+=item B<apply_override_method_modifiers>
+
=back
=head1 BUGS
=head1 COPYRIGHT AND LICENSE
-Copyright 2006, 2007 by Infinity Interactive, Inc.
+Copyright 2006-2008 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
projects / gitmo/Moose.git / blobdiff