use Carp ();
use List::Util qw( first );
-use List::MoreUtils qw( any all uniq );
+use List::MoreUtils qw( any all uniq first_index );
use Scalar::Util 'weaken', 'blessed';
-our $VERSION = '0.72';
+our $VERSION = '0.79';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
use Moose::Meta::Method::Overridden;
use Moose::Meta::Method::Augmented;
use Moose::Error::Default;
+use Moose::Meta::Class::Immutable::Trait;
+use Moose::Meta::Method::Constructor;
+use Moose::Meta::Method::Destructor;
use base 'Class::MOP::Class';
default => sub { [] }
));
+__PACKAGE__->meta->add_attribute('role_applications' => (
+ reader => '_get_role_applications',
+ default => sub { [] }
+));
+
+__PACKAGE__->meta->add_attribute(
+ Class::MOP::Attribute->new('immutable_trait' => (
+ accessor => "immutable_trait",
+ default => 'Moose::Meta::Class::Immutable::Trait',
+ ))
+);
+
__PACKAGE__->meta->add_attribute('constructor_class' => (
accessor => 'constructor_class',
default => 'Moose::Meta::Method::Constructor',
default => 'Moose::Error::Default',
));
-
sub initialize {
my $class = shift;
my $pkg = shift;
- return Class::MOP::get_metaclass_by_name($pkg)
+ return Class::MOP::get_metaclass_by_name($pkg)
|| $class->SUPER::initialize($pkg,
'attribute_metaclass' => 'Moose::Meta::Attribute',
'method_metaclass' => 'Moose::Meta::Method',
'instance_metaclass' => 'Moose::Meta::Instance',
@_
- );
+ );
+}
+
+sub _immutable_options {
+ my ( $self, @args ) = @_;
+
+ $self->SUPER::_immutable_options(
+ inline_destructor => 1,
+
+ # Moose always does this when an attribute is created
+ inline_accessors => 0,
+
+ @args,
+ );
}
sub create {
my ($self, $package_name, %options) = @_;
-
+
(ref $options{roles} eq 'ARRAY')
|| $self->throw_error("You must pass an ARRAY ref of roles", data => $options{roles})
if exists $options{roles};
if ($roles) {
Moose::Util::apply_all_roles( $class, @$roles );
}
-
+
return $class;
}
-sub check_metaclass_compatibility {
+sub _check_metaclass_compatibility {
my $self = shift;
if ( my @supers = $self->superclasses ) {
$self->_fix_metaclass_incompatibility(@supers);
}
- $self->SUPER::check_metaclass_compatibility(@_);
+ $self->SUPER::_check_metaclass_compatibility(@_);
}
my %ANON_CLASSES;
my ($self, %options) = @_;
my $cache_ok = delete $options{cache};
-
+
# something like Super::Class|Super::Class::2=Role|Role::1
my $cache_key = join '=' => (
join('|', @{$options{superclasses} || []}),
join('|', sort @{$options{roles} || []}),
);
-
+
if ($cache_ok && defined $ANON_CLASSES{$cache_key}) {
return $ANON_CLASSES{$cache_key};
}
-
+
my $new_class = $self->SUPER::create_anon_class(%options);
$ANON_CLASSES{$cache_key} = $new_class
push @{$self->roles} => $role;
}
+sub role_applications {
+ my ($self) = @_;
+
+ return @{$self->_get_role_applications};
+}
+
+sub add_role_application {
+ my ($self, $application) = @_;
+ (blessed($application) && $application->isa('Moose::Meta::Role::Application::ToClass'))
+ || $self->throw_error("Role applications must be instances of Moose::Meta::Role::Application::ToClass", data => $application);
+ push @{$self->_get_role_applications} => $application;
+}
+
sub calculate_all_roles {
my $self = shift;
my %seen;
sub does_role {
my ($self, $role_name) = @_;
+
(defined $role_name)
|| $self->throw_error("You must supply a role name to look for");
+
foreach my $class ($self->class_precedence_list) {
- next unless $class->can('meta') && $class->meta->can('roles');
- foreach my $role (@{$class->meta->roles}) {
+ my $meta = Class::MOP::class_of($class);
+ # when a Moose metaclass is itself extended with a role,
+ # this check needs to be done since some items in the
+ # class_precedence_list might in fact be Class::MOP
+ # based still.
+ next unless $meta && $meta->can('roles');
+ foreach my $role (@{$meta->roles}) {
return 1 if $role->does_role($role_name);
}
}
sub excludes_role {
my ($self, $role_name) = @_;
+
(defined $role_name)
|| $self->throw_error("You must supply a role name to look for");
+
foreach my $class ($self->class_precedence_list) {
- next unless $class->can('meta');
- # NOTE:
- # in the pretty rare instance when a Moose metaclass
- # is itself extended with a role, this check needs to
- # be done since some items in the class_precedence_list
- # might in fact be Class::MOP based still.
- next unless $class->meta->can('roles');
- foreach my $role (@{$class->meta->roles}) {
+ my $meta = Class::MOP::class_of($class);
+ # when a Moose metaclass is itself extended with a role,
+ # this check needs to be done since some items in the
+ # class_precedence_list might in fact be Class::MOP
+ # based still.
+ next unless $meta && $meta->can('roles');
+ foreach my $role (@{$meta->roles}) {
return 1 if $role->excludes_role($role_name);
}
}
my $params = @_ == 1 ? $_[0] : {@_};
my $self = $class->SUPER::new_object($params);
- foreach my $attr ( $class->compute_all_applicable_attributes() ) {
+ foreach my $attr ( $class->get_all_attributes() ) {
next unless $attr->can('has_trigger') && $attr->has_trigger;
? $attr->get_read_method_ref->($self)
: $params->{$init_arg}
),
- $attr
);
}
return $self;
}
-sub construct_instance {
+sub _construct_instance {
my $class = shift;
my $params = @_ == 1 ? $_[0] : {@_};
my $meta_instance = $class->get_meta_instance;
# but this is foreign inheritance, so we might
# have to kludge it in the end.
my $instance = $params->{'__INSTANCE__'} || $meta_instance->create_instance();
- foreach my $attr ($class->compute_all_applicable_attributes()) {
+ foreach my $attr ($class->get_all_attributes()) {
$attr->initialize_instance_slot($meta_instance, $instance, $params);
}
return $instance;
}
+sub superclasses {
+ my $self = shift;
+ my @supers = @_;
+ foreach my $super (@supers) {
+ Class::MOP::load_class($super);
+ my $meta = Class::MOP::class_of($super);
+ Moose->throw_error("You cannot inherit from a Moose Role ($super)")
+ if $meta && $meta->isa('Moose::Meta::Role')
+ }
+ return $self->SUPER::superclasses(@supers);
+}
+
### ---------------------------------------------
sub add_attribute {
my $self = shift;
$self->SUPER::add_attribute(
(blessed $_[0] && $_[0]->isa('Class::MOP::Attribute')
- ? $_[0]
- : $self->_process_attribute(@_))
+ ? $_[0]
+ : $self->_process_attribute(@_))
);
}
my ($self, @superclasses) = @_;
foreach my $super (@superclasses) {
- next if $self->_superclass_meta_is_compatible($super);
+ my $meta = Class::MOP::Class->initialize($super);
+
+ my @all_supers = $meta->linearized_isa;
+ shift @all_supers;
+
+ my @super_metas_to_fix = ($meta);
- unless ( $self->is_pristine ) {
- $self->throw_error(
- "Cannot attempt to reinitialize metaclass for "
- . $self->name
- . ", it isn't pristine" );
+ # We need to check & fix the immediate superclass. If its @ISA
+ # contains a class without a metaclass instance, followed by a
+ # class _with_ a metaclass instance, init a metaclass instance
+ # for classes without one and fix compat up to and including
+ # the class which was already initialized.
+ my $idx = first_index { Class::MOP::class_of($_) } @all_supers;
+
+ push @super_metas_to_fix,
+ map { Class::MOP::Class->initialize($_) } @all_supers[ 0 .. $idx ]
+ if $idx >= 0;
+
+ foreach my $super_meta (@super_metas_to_fix) {
+ $self->_fix_one_incompatible_metaclass($super_meta);
}
+ }
+}
+
+sub _fix_one_incompatible_metaclass {
+ my ($self, $meta) = @_;
- $self->_reconcile_with_superclass_meta($super);
+ return if $self->_superclass_meta_is_compatible($meta);
+
+ unless ( $self->is_pristine ) {
+ $self->throw_error(
+ "Cannot attempt to reinitialize metaclass for "
+ . $self->name
+ . ", it isn't pristine" );
}
+
+ $self->_reconcile_with_superclass_meta($meta);
}
sub _superclass_meta_is_compatible {
- my ($self, $super) = @_;
-
- my $super_meta = Class::MOP::Class->initialize($super)
- or return 1;
+ my ($self, $super_meta) = @_;
next unless $super_meta->isa("Class::MOP::Class");
# I don't want to have to type this >1 time
my @MetaClassTypes =
- qw( attribute_metaclass method_metaclass instance_metaclass
- constructor_class destructor_class error_class );
+ qw( attribute_metaclass
+ method_metaclass
+ wrapped_method_metaclass
+ instance_metaclass
+ constructor_class
+ destructor_class
+ error_class );
sub _reconcile_with_superclass_meta {
- my ($self, $super) = @_;
-
- my $super_meta = $super->meta;
+ my ($self, $super_meta) = @_;
my $super_meta_name
= $super_meta->is_immutable
# FIXME? This doesn't account for multiple inheritance (not sure
# if it needs to though). For example, is somewhere in $meta1's
- # history it inherits from both ClassA and ClassB, and $meta
+ # history it inherits from both ClassA and ClassB, and $meta2
# inherits from ClassB & ClassA, does it matter? And what crazy
# fool would do that anyway?
sub _reconcile_role_differences {
my ($self, $super_meta) = @_;
- my $self_meta = $self->meta;
+ my $self_meta = Class::MOP::class_of($self);
my %roles;
return $self;
}
-# NOTE:
-# this was crap anyway, see
-# Moose::Util::apply_all_roles
-# instead
-sub _apply_all_roles {
- Carp::croak 'DEPRECATED: use Moose::Util::apply_all_roles($meta, @roles) instead'
-}
-
sub _process_attribute {
my ( $self, $name, @args ) = @_;
## -------------------------------------------------
-use Moose::Meta::Method::Constructor;
-use Moose::Meta::Method::Destructor;
-
-
-sub _default_immutable_transformer_options {
- my $self = shift;
-
- my %options = $self->SUPER::_default_immutable_transformer_options;
-
- # We need to copy the references as we do not want to alter the
- # superclass's references.
- $options{cannot_call} = [ @{ $options{cannot_call} }, 'add_role' ];
- $options{memoize} = {
- %{ $options{memoize} },
- calculate_all_roles => 'ARRAY',
- };
-
- %options = (
- %options,
- constructor_class => $self->constructor_class,
- destructor_class => $self->destructor_class,
- inline_destructor => 1,
-
- # Moose always does this when an attribute is created
- inline_accessors => 0,
- );
-
- return %options
-}
-
our $error_level;
sub throw_error {
=head1 DESCRIPTION
-This is a subclass of L<Class::MOP::Class> with Moose specific
-extensions.
+This class is a subclass of L<Class::MOP::Class> that provides
+additional Moose-specific functionality.
+
+To really understand this class, you will need to start with the
+L<Class::MOP::Class> documentation. This class can be understood as a
+set of additional features on top of the basic feature provided by
+that parent class.
-For the most part, the only time you will ever encounter an
-instance of this class is if you are doing some serious deep
-introspection. To really understand this class, you need to refer
-to the L<Class::MOP::Class> documentation.
+=head1 INHERITANCE
+
+C<Moose::Meta::Class> is a subclass of L<Class::MOP::Class>.
=head1 METHODS
=over 4
-=item B<initialize>
+=item B<< Moose::Meta::Class->initialize($package_name, %options) >>
-=item B<create>
+This overrides the parent's method in order to provide its own
+defaults for the C<attribute_metaclass>, C<instance_metaclass>, and
+C<method_metaclass> options.
-Overrides original to accept a list of roles to apply to
-the created class.
+These all default to the appropriate Moose class.
- my $metaclass = Moose::Meta::Class->create( 'New::Class', roles => [...] );
+=item B<< Moose::Meta::Class->create($package_name, %options) >>
-=item B<create_anon_class>
+This overrides the parent's method in order to accept a C<roles>
+option. This should be an array reference containing one more roles
+that the class does.
-Overrides original to support roles and caching.
+ my $metaclass = Moose::Meta::Class->create( 'New::Class', roles => [...] );
- my $metaclass = Moose::Meta::Class->create_anon_class(
- superclasses => ['Foo'],
- roles => [qw/Some Roles Go Here/],
- cache => 1,
- );
+=item B<< Moose::Meta::Class->create_anon_class >>
-=item B<make_immutable>
+This overrides the parent's method to accept a C<roles> option, just
+as C<create> does.
-Override original to add default options for inlining destructor
-and altering the Constructor metaclass.
+It also accepts a C<cache> option. If this is true, then the anonymous
+class will be cached based on its superclasses and roles. If an
+existing anonymous class in the cache has the same superclasses and
+roles, it will be reused.
-=item B<create_immutable_transformer>
+ my $metaclass = Moose::Meta::Class->create_anon_class(
+ superclasses => ['Foo'],
+ roles => [qw/Some Roles Go Here/],
+ cache => 1,
+ );
-Override original to lock C<add_role> and memoize C<calculate_all_roles>
+=item B<< $metaclass->make_immutable(%options) >>
-=item B<new_object>
+This overrides the parent's method to add a few options. Specifically,
+it uses the Moose-specific constructor and destructor classes, and
+enables inlining the destructor.
-We override this method to support the C<trigger> attribute option.
+Also, since Moose always inlines attributes, it sets the
+C<inline_accessors> option to false.
-=item B<construct_instance>
+=item B<< $metaclass->new_object(%params) >>
-This provides some Moose specific extensions to this method, you
-almost never call this method directly unless you really know what
-you are doing.
+This overrides the parent's method in order to add support for
+attribute triggers.
-This method makes sure to handle the moose weak-ref, type-constraint
-and type coercion features.
+=item B<< $metaclass->add_override_method_modifier($name, $sub) >>
-=item B<get_method_map>
+This adds an C<override> method modifier to the package.
-This accommodates Moose::Meta::Role::Method instances, which are
-aliased, instead of added, but still need to be counted as valid
-methods.
+=item B<< $metaclass->add_augment_method_modifier($name, $sub) >>
-=item B<add_override_method_modifier ($name, $method)>
+This adds an C<augment> method modifier to the package.
-This will create an C<override> method modifier for you, and install
-it in the package.
+=item B<< $metaclass->calculate_all_roles >>
-=item B<add_augment_method_modifier ($name, $method)>
+This will return a unique array of C<Moose::Meta::Role> instances
+which are attached to this class.
-This will create an C<augment> method modifier for you, and install
-it in the package.
+=item B<< $metaclass->add_role($role) >>
-=item B<calculate_all_roles>
+This takes a L<Moose::Meta::Role> object, and adds it to the class's
+list of roles. This I<does not> actually apply the role to the class.
-=item B<roles>
+=item B<< $metaclass->role_applications >>
-This will return an array of C<Moose::Meta::Role> instances which are
-attached to this class.
+Returns a list of L<Moose::Meta::Role::Application::ToClass>
+objects, which contain the arguments to role application.
-=item B<add_role ($role)>
+=item B<< $metaclass->add_role_application($application) >>
-This takes an instance of C<Moose::Meta::Role> in C<$role>, and adds it
-to the list of associated roles.
+This takes a L<Moose::Meta::Role::Application::ToClass> object, and
+adds it to the class's list of role applications. This I<does not>
+actually apply any role to the class; it is only for tracking role
+applications.
-=item B<does_role ($role_name)>
+=item B<< $metaclass->does_role($role_name) >>
-This will test if this class C<does> a given C<$role_name>. It will
-not only check it's local roles, but ask them as well in order to
-cascade down the role hierarchy.
+This returns a boolean indicating whether or not the class does the
+specified role. This tests both the class and its parents.
-=item B<excludes_role ($role_name)>
+=item B<< $metaclass->excludes_role($role_name) >>
-This will test if this class C<excludes> a given C<$role_name>. It will
-not only check it's local roles, but ask them as well in order to
-cascade down the role hierarchy.
+A class excludes a role if it has already composed a role which
+excludes the named role. This tests both the class and its parents.
-=item B<add_attribute ($attr_name, %params|$params)>
+=item B<< $metaclass->add_attribute($attr_name, %params|$params) >>
-This method does the same thing as L<Class::MOP::Class::add_attribute>, but adds
-support for taking the C<$params> as a HASH ref.
+This overrides the parent's method in order to allow the parameters to
+be provided as a hash reference.
-=item B<constructor_class ($class_name)>
+=item B<< $metaclass->constructor_class ($class_name) >>
-=item B<destructor_class ($class_name)>
+=item B<< $metaclass->destructor_class ($class_name) >>
These are the names of classes used when making a class
immutable. These default to L<Moose::Meta::Method::Constructor> and
L<Moose::Meta::Method::Destructor> respectively. These accessors are
read-write, so you can use them to change the class name.
-=item B<error_class ($class_name)>
+=item B<< $metaclass->error_class($class_name) >>
-The name of the class used to throw errors. This default to
+The name of the class used to throw errors. This defaults to
L<Moose::Error::Default>, which generates an error with a stacktrace
just like C<Carp::confess>.
-=item B<check_metaclass_compatibility>
-
-Moose overrides this method from C<Class::MOP::Class> and attempts to
-fix some incompatibilities before doing the check.
-
-=item B<throw_error $message, %extra>
+=item B<< $metaclass->throw_error($message, %extra) >>
Throws the error created by C<create_error> using C<raise_error>
-=item B<create_error $message, %extra>
-
-Creates an error message or object.
-
-The default behavior is C<create_error_confess>.
-
-If C<error_class> is set uses C<create_error_object>. Otherwise uses
-C<error_builder> (a code reference or variant name), and calls the appropriate
-C<create_error_$builder> method.
-
-=item B<error_builder $builder_name>
-
-Get or set the error builder. Defaults to C<confess>.
-
-=item B<error_class $class_name>
-
-Get or set the error class. This defaults to L<Moose::Error::Default>.
-
-=item B<create_error_confess %args>
-
-Creates an error using L<Carp/longmess>
-
-=item B<create_error_croak %args>
-
-Creates an error using L<Carp/shortmess>
-
-=item B<create_error_object %args>
-
-Calls C<new> on the C<class> parameter in C<%args>. Usable with C<error_class>
-to support custom error objects for your meta class.
-
-=item B<raise_error $error>
-
-Dies with an error object or string.
-
=back
=head1 BUGS
projects / gitmo/Moose.git / blobdiff