use Scalar::Util 'blessed';
use Carp 'confess';
+use Sub::Name 'subname';
+use Devel::GlobalDestruction 'in_global_destruction';
-our $VERSION = '0.72';
+our $VERSION = '0.79';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
## I normally don't do this, but I am doing
## a whole bunch of meta-programmin in this
## module, so it just makes sense. For a clearer
-## picture of what is going on in the next
-## several lines of code, look at the really
+## picture of what is going on in the next
+## several lines of code, look at the really
## big comment at the end of this file (right
## before the POD).
## - SL
# time when it is applied to a class. This means
# keeping a lot of things in hash maps, so we are
# using a little of that meta-programmin' magic
-# here an saving lots of extra typin. And since
+# here an saving lots of extra typin. And since
# many of these attributes above require similar
# functionality to support them, so we again use
# the wonders of meta-programmin' to deliver a
name => 'required_methods',
attr_reader => 'get_required_methods_map',
methods => {
- add => 'add_required_methods',
remove => 'remove_required_methods',
get_list => 'get_required_method_list',
existence => 'requires_method',
}
- },
+ },
{
name => 'attribute_map',
attr_reader => 'get_attribute_map',
}) if exists $methods->{remove};
}
+$META->add_attribute(
+ 'method_metaclass',
+ reader => 'method_metaclass',
+ default => 'Moose::Meta::Role::Method',
+);
+
+$META->add_attribute(
+ 'required_method_metaclass',
+ reader => 'required_method_metaclass',
+ default => 'Moose::Meta::Role::Method::Required',
+);
+
## some things don't always fit, so they go here ...
sub add_attribute {
$self->get_attribute_map->{$name} = $attr_desc;
}
-# DEPRECATED
-# sub _clean_up_required_methods {
-# my $self = shift;
-# foreach my $method ($self->get_required_method_list) {
-# $self->remove_required_methods($method)
-# if $self->has_method($method);
-# }
-# }
+sub add_required_methods {
+ my $self = shift;
+
+ for (@_) {
+ my $method = $_;
+ if (!blessed($method)) {
+ $method = $self->required_method_metaclass->new(
+ name => $method,
+ );
+ }
+ $self->get_required_methods_map->{$method->name} = $method;
+ }
+}
## ------------------------------------------------------------------
## method modifiers
foreach my $modifier_type (qw[ before around after ]) {
my $attr_reader = "get_${modifier_type}_method_modifiers_map";
-
+
# create the attribute ...
$META->add_attribute("${modifier_type}_method_modifiers" => (
reader => $attr_reader,
default => sub { {} }
- ));
+ ));
# and some helper methods ...
$META->add_method("get_${modifier_type}_method_modifiers" => sub {
## ------------------------------------------------------------------
## subroles
-__PACKAGE__->meta->add_attribute('roles' => (
+$META->add_attribute('roles' => (
reader => 'get_roles',
default => sub { [] }
));
## ------------------------------------------------------------------
## methods
-sub method_metaclass { 'Moose::Meta::Role::Method' }
-
sub get_method_map {
my $self = shift;
$map->{$symbol}->body == $code;
my ($pkg, $name) = Class::MOP::get_code_info($code);
+ my $meta = Class::MOP::class_of($pkg);
- if ($pkg->can('meta')
- # NOTE:
- # we don't know what ->meta we are calling
- # here, so we need to be careful cause it
- # just might blow up at us, or just complain
- # loudly (in the case of Curses.pm) so we
- # just be a little overly cautious here.
- # - SL
- && eval { no warnings; blessed($pkg->meta) } # FIXME calls meta
- && $pkg->meta->isa('Moose::Meta::Role')) {
- my $role = $pkg->meta->name;
+ if ($meta && $meta->isa('Moose::Meta::Role')) {
+ my $role = $meta->name;
next unless $self->does_role($role);
}
else {
# NOTE:
- # in 5.10 constant.pm the constants show up
+ # in 5.10 constant.pm the constants show up
# as being in the right package, but in pre-5.10
- # they show up as constant::__ANON__ so we
+ # they show up as constant::__ANON__ so we
# make an exception here to be sure that things
# work as expected in both.
# - SL
unless ($pkg eq 'constant' && $name eq '__ANON__') {
next if ($pkg || '') ne $role_name ||
(($name || '') ne '__ANON__' && ($pkg || '') ne $role_name);
- }
+ }
}
-
+
$map->{$symbol} = $method_metaclass->wrap(
$code,
package_name => $role_name,
- name => $name
+ name => $name
);
}
- return $map;
+ return $map;
}
-sub get_method {
+sub get_method {
my ($self, $name) = @_;
$self->get_method_map->{$name};
}
if ($method->package_name ne $self->name) {
$method = $method->clone(
package_name => $self->name,
- name => $method_name
+ name => $method_name
) if $method->can('clone');
}
}
my $full_method_name = ($self->name . '::' . $method_name);
$self->add_package_symbol(
{ sigil => '&', type => 'CODE', name => $method_name },
- Class::MOP::subname($full_method_name => $body)
+ subname($full_method_name => $body)
);
$self->update_package_cache_flag; # still valid, since we just added the method to the map, and if it was invalid before that then get_method_map updated it
}
sub alias_method {
+ Carp::cluck("The alias_method method is deprecated. Use add_method instead.\n");
+
my $self = shift;
$self->add_method(@_);
(blessed($other))
|| Moose->throw_error("You must pass in an blessed instance");
-
+
if ($other->isa('Moose::Meta::Role')) {
require Moose::Meta::Role::Application::ToRole;
return Moose::Meta::Role::Application::ToRole->new(@args)->apply($self, $other);
elsif ($other->isa('Moose::Meta::Class')) {
require Moose::Meta::Role::Application::ToClass;
return Moose::Meta::Role::Application::ToClass->new(@args)->apply($self, $other);
- }
+ }
else {
require Moose::Meta::Role::Application::ToInstance;
- return Moose::Meta::Role::Application::ToInstance->new(@args)->apply($self, $other);
- }
+ return Moose::Meta::Role::Application::ToInstance->new(@args)->apply($self, $other);
+ }
}
sub combine {
my ($class, @role_specs) = @_;
-
+
require Moose::Meta::Role::Application::RoleSummation;
- require Moose::Meta::Role::Composite;
-
+ require Moose::Meta::Role::Composite;
+
my (@roles, %role_params);
while (@role_specs) {
- my ($role, $params) = @{ splice @role_specs, 0, 1 };
- push @roles => $role->meta;
+ my ($role_name, $params) = @{ splice @role_specs, 0, 1 };
+ my $requested_role = Class::MOP::class_of($role_name);
+
+ my $actual_role = $requested_role->_role_for_combination($params);
+ push @roles => $actual_role;
+
next unless defined $params;
- $role_params{$role} = $params;
+ $role_params{$actual_role->name} = $params;
}
-
+
my $c = Moose::Meta::Role::Composite->new(roles => \@roles);
Moose::Meta::Role::Application::RoleSummation->new(
role_params => \%role_params
)->apply($c);
-
+
return $c;
}
+sub _role_for_combination {
+ my ($self, $params) = @_;
+ return $self;
+}
+
sub create {
my ( $role, $package_name, %options ) = @_;
|| confess "You must pass a HASH ref of methods"
if exists $options{methods};
- $role->SUPER::create(%options);
-
my (%initialize_options) = %options;
delete @initialize_options{qw(
package
my $meta = $role->initialize( $package_name => %initialize_options );
+ $meta->_instantiate_module( $options{version}, $options{authority} );
+
# FIXME totally lame
$meta->add_method('meta' => sub {
$role->initialize(ref($_[0]) || $_[0]);
sub DESTROY {
my $self = shift;
- return if Class::MOP::in_global_destruction(); # it'll happen soon anyway and this just makes things more complicated
+ return if in_global_destruction(); # it'll happen soon anyway and this just makes things more complicated
no warnings 'uninitialized';
return unless $self->name =~ /^$ANON_ROLE_PREFIX/;
#####################################################################
## NOTE:
-## This is Moose::Meta::Role as defined by Moose (plus the use of
-## MooseX::AttributeHelpers module). It is here as a reference to
+## This is Moose::Meta::Role as defined by Moose (plus the use of
+## MooseX::AttributeHelpers module). It is here as a reference to
## make it easier to see what is happening above with all the meta
## programming. - SL
#####################################################################
# 'push' => 'add_role',
# }
# );
-#
+#
# has 'excluded_roles_map' => (
# metaclass => 'Collection::Hash',
# reader => 'get_excluded_roles_map',
# 'exists' => 'excludes_role',
# }
# );
-#
+#
# has 'attribute_map' => (
# metaclass => 'Collection::Hash',
# reader => 'get_attribute_map',
-# isa => 'HashRef[Str]',
+# isa => 'HashRef[Str]',
# provides => {
# # 'set' => 'add_attribute' # has some special crap in it
# 'get' => 'get_attribute',
# 'keys' => 'get_attribute_list',
# 'exists' => 'has_attribute',
# # Not exactly delete, cause it sets multiple
-# 'delete' => 'remove_attribute',
+# 'delete' => 'remove_attribute',
# }
# );
-#
+#
# has 'required_methods' => (
# metaclass => 'Collection::Hash',
# reader => 'get_required_methods_map',
# isa => 'HashRef[Str]',
-# provides => {
-# # not exactly set, or delete since it works for multiple
+# provides => {
+# # not exactly set, or delete since it works for multiple
# 'set' => 'add_required_methods',
# 'delete' => 'remove_required_methods',
# 'keys' => 'get_required_method_list',
-# 'exists' => 'requires_method',
+# 'exists' => 'requires_method',
# }
# );
-#
-# # the before, around and after modifiers are
-# # HASH keyed by method-name, with ARRAY of
+#
+# # the before, around and after modifiers are
+# # HASH keyed by method-name, with ARRAY of
# # CODE refs to apply in that order
-#
+#
# has 'before_method_modifiers' => (
-# metaclass => 'Collection::Hash',
+# metaclass => 'Collection::Hash',
# reader => 'get_before_method_modifiers_map',
# isa => 'HashRef[ArrayRef[CodeRef]]',
# provides => {
# 'keys' => 'get_before_method_modifiers',
-# 'exists' => 'has_before_method_modifiers',
-# # This actually makes sure there is an
+# 'exists' => 'has_before_method_modifiers',
+# # This actually makes sure there is an
# # ARRAY at the given key, and pushed onto
# # it. It also checks for duplicates as well
-# # 'add' => 'add_before_method_modifier'
-# }
+# # 'add' => 'add_before_method_modifier'
+# }
# );
-#
+#
# has 'after_method_modifiers' => (
-# metaclass => 'Collection::Hash',
+# metaclass => 'Collection::Hash',
# reader =>'get_after_method_modifiers_map',
# isa => 'HashRef[ArrayRef[CodeRef]]',
# provides => {
# 'keys' => 'get_after_method_modifiers',
-# 'exists' => 'has_after_method_modifiers',
-# # This actually makes sure there is an
+# 'exists' => 'has_after_method_modifiers',
+# # This actually makes sure there is an
# # ARRAY at the given key, and pushed onto
-# # it. It also checks for duplicates as well
-# # 'add' => 'add_after_method_modifier'
-# }
+# # it. It also checks for duplicates as well
+# # 'add' => 'add_after_method_modifier'
+# }
# );
-#
+#
# has 'around_method_modifiers' => (
-# metaclass => 'Collection::Hash',
+# metaclass => 'Collection::Hash',
# reader =>'get_around_method_modifiers_map',
# isa => 'HashRef[ArrayRef[CodeRef]]',
# provides => {
# 'keys' => 'get_around_method_modifiers',
-# 'exists' => 'has_around_method_modifiers',
-# # This actually makes sure there is an
+# 'exists' => 'has_around_method_modifiers',
+# # This actually makes sure there is an
# # ARRAY at the given key, and pushed onto
-# # it. It also checks for duplicates as well
-# # 'add' => 'add_around_method_modifier'
-# }
+# # it. It also checks for duplicates as well
+# # 'add' => 'add_around_method_modifier'
+# }
# );
-#
+#
# # override is similar to the other modifiers
# # except that it is not an ARRAY of code refs
# # but instead just a single name->code mapping
-#
+#
# has 'override_method_modifiers' => (
-# metaclass => 'Collection::Hash',
+# metaclass => 'Collection::Hash',
# reader =>'get_override_method_modifiers_map',
-# isa => 'HashRef[CodeRef]',
+# isa => 'HashRef[CodeRef]',
# provides => {
# 'keys' => 'get_override_method_modifier',
-# 'exists' => 'has_override_method_modifier',
-# 'add' => 'add_override_method_modifier', # checks for local method ..
+# 'exists' => 'has_override_method_modifier',
+# 'add' => 'add_override_method_modifier', # checks for local method ..
# }
# );
-#
+#
#####################################################################
It's API looks a lot like L<Moose::Meta::Class>, but internally it
implements many things differently. This may change in the future.
+=head1 INHERITANCE
+
+C<Moose::Meta::Role> is a subclass of L<Class::MOP::Module>.
+
=head1 METHODS
=head2 Construction
The options are passed directly to the constructor for the appropriate
L<Moose::Meta::Role::Application> subclass.
+Note that this will apply the role even if the C<$thing> in question already
+C<does> this role. L<Moose::Util/does_role> is a convenient wrapper for
+finding out if role application is necessary.
+
=back
=head2 Roles and other roles
Returns true if the role requires the named method.
-=item B<< $metarole->add_required_methods(@names >>
+=item B<< $metarole->add_required_methods(@names) >>
-Adds the named methods to the roles list of required methods.
+Adds the named methods to the role's list of required methods.
=item B<< $metarole->remove_required_methods(@names) >>
-Removes the named methods to the roles list of required methods.
+Removes the named methods to the role's list of required methods.
=back