use strict;
use warnings;
+use Class::MOP;
+
use Carp 'confess';
use Scalar::Util 'weaken', 'blessed';
-our $VERSION = '0.04';
+our $VERSION = '0.56';
+our $AUTHORITY = 'cpan:STEVAN';
+
+use Moose::Meta::Method::Overriden;
+use Moose::Meta::Method::Augmented;
use base 'Class::MOP::Class';
-__PACKAGE__->meta->add_attribute('@:roles' => (
+__PACKAGE__->meta->add_attribute('roles' => (
reader => 'roles',
default => sub { [] }
));
+sub initialize {
+ my $class = shift;
+ my $pkg = shift;
+ return Class::MOP::get_metaclass_by_name($pkg)
+ || $class->SUPER::initialize($pkg,
+ 'attribute_metaclass' => 'Moose::Meta::Attribute',
+ 'method_metaclass' => 'Moose::Meta::Method',
+ 'instance_metaclass' => 'Moose::Meta::Instance',
+ @_
+ );
+}
+
+sub create {
+ my ($self, $package_name, %options) = @_;
+
+ (ref $options{roles} eq 'ARRAY')
+ || confess "You must pass an ARRAY ref of roles"
+ if exists $options{roles};
+
+ my $class = $self->SUPER::create($package_name, %options);
+
+ if (exists $options{roles}) {
+ Moose::Util::apply_all_roles($class, @{$options{roles}});
+ }
+
+ return $class;
+}
+
+my %ANON_CLASSES;
+
+sub create_anon_class {
+ my ($self, %options) = @_;
+
+ my $cache_ok = delete $options{cache};
+
+ # something like Super::Class|Super::Class::2=Role|Role::1
+ my $cache_key = join '=' => (
+ join('|', sort @{$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
+ if $cache_ok;
+
+ return $new_class;
+}
+
sub add_role {
my ($self, $role) = @_;
(blessed($role) && $role->isa('Moose::Meta::Role'))
push @{$self->roles} => $role;
}
+sub calculate_all_roles {
+ my $self = shift;
+ my %seen;
+ grep { !$seen{$_->name}++ } map { $_->calculate_all_roles } @{ $self->roles };
+}
+
sub does_role {
my ($self, $role_name) = @_;
(defined $role_name)
|| confess "You must supply a role name to look for";
- foreach my $role (@{$self->roles}) {
- return 1 if $role->name eq $role_name;
+ foreach my $class ($self->class_precedence_list) {
+ next unless $class->can('meta') && $class->meta->can('roles');
+ foreach my $role (@{$class->meta->roles}) {
+ return 1 if $role->does_role($role_name);
+ }
}
return 0;
}
+sub excludes_role {
+ my ($self, $role_name) = @_;
+ (defined $role_name)
+ || confess "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}) {
+ return 1 if $role->excludes_role($role_name);
+ }
+ }
+ return 0;
+}
+
+sub new_object {
+ my ($class, %params) = @_;
+ my $self = $class->SUPER::new_object(%params);
+ foreach my $attr ($class->compute_all_applicable_attributes()) {
+ # if we have a trigger, then ...
+ if ($attr->can('has_trigger') && $attr->has_trigger) {
+ # make sure we have an init-arg ...
+ if (defined(my $init_arg = $attr->init_arg)) {
+ # now make sure an init-arg was passes ...
+ if (exists $params{$init_arg}) {
+ # and if get here, fire the trigger
+ $attr->trigger->(
+ $self,
+ # check if there is a coercion
+ ($attr->should_coerce
+ # and if so, we need to grab the
+ # value that is actually been stored
+ ? $attr->get_read_method_ref->($self)
+ # otherwise, just get the value from
+ # the constructor params
+ : $params{$init_arg}),
+ $attr
+ );
+ }
+ }
+ }
+ }
+ return $self;
+}
+
sub construct_instance {
my ($class, %params) = @_;
- my $instance = $params{'__INSTANCE__'} || {};
+ my $meta_instance = $class->get_meta_instance;
+ # FIXME:
+ # the code below is almost certainly incorrect
+ # but this is foreign inheritence, 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()) {
- my $init_arg = $attr->init_arg();
- # try to fetch the init arg from the %params ...
- my $val;
- if (exists $params{$init_arg}) {
- $val = $params{$init_arg};
+ $attr->initialize_instance_slot($meta_instance, $instance, \%params);
+ }
+ return $instance;
+}
+
+# FIXME:
+# This is ugly
+sub get_method_map {
+ my $self = shift;
+
+ my $current = Class::MOP::check_package_cache_flag($self->name);
+
+ if (defined $self->{'_package_cache_flag'} && $self->{'_package_cache_flag'} == $current) {
+ return $self->{'methods'};
+ }
+
+ $self->{_package_cache_flag} = $current;
+
+ my $map = $self->{'methods'};
+
+ my $class_name = $self->name;
+ my $method_metaclass = $self->method_metaclass;
+
+ my %all_code = $self->get_all_package_symbols('CODE');
+
+ foreach my $symbol (keys %all_code) {
+ my $code = $all_code{$symbol};
+
+ next if exists $map->{$symbol} &&
+ defined $map->{$symbol} &&
+ $map->{$symbol}->body == $code;
+
+ my ($pkg, $name) = Class::MOP::get_code_info($code);
+
+ 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) }
+ && $pkg->meta->isa('Moose::Meta::Role')) {
+ #my $role = $pkg->meta->name;
+ #next unless $self->does_role($role);
}
else {
- # skip it if it's lazy
- next if $attr->is_lazy;
- # and die if it is required
- confess "Attribute (" . $attr->name . ") is required"
- if $attr->is_required
- }
- # if nothing was in the %params, we can use the
- # attribute's default value (if it has one)
- if (!defined $val && $attr->has_default) {
- $val = $attr->default($instance);
- }
- if (defined $val) {
- if ($attr->has_type_constraint) {
- if ($attr->should_coerce && $attr->type_constraint->has_coercion) {
- $val = $attr->type_constraint->coercion->coerce($val);
- }
- (defined($attr->type_constraint->check($val)))
- || confess "Attribute (" . $attr->name . ") does not pass the type contraint with '$val'";
+
+ # NOTE:
+ # 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
+ # 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 $class_name ||
+ (($name || '') ne '__ANON__' && ($pkg || '') ne $class_name);
}
- }
- $instance->{$attr->name} = $val;
- if (defined $val && $attr->is_weak_ref) {
- weaken($instance->{$attr->name});
+
}
+
+ $map->{$symbol} = $method_metaclass->wrap(
+ $code,
+ package_name => $class_name,
+ name => $symbol
+ );
}
- return $instance;
+
+ return $map;
}
-sub has_method {
- my ($self, $method_name) = @_;
- (defined $method_name && $method_name)
- || confess "You must define a method name";
+### ---------------------------------------------
- my $sub_name = ($self->name . '::' . $method_name);
-
- no strict 'refs';
- return 0 if !defined(&{$sub_name});
- my $method = \&{$sub_name};
-
- return 1 if blessed($method) && $method->isa('Moose::Meta::Role::Method');
- return $self->SUPER::has_method($method_name);
+sub add_attribute {
+ my $self = shift;
+ $self->SUPER::add_attribute(
+ (blessed $_[0] && $_[0]->isa('Class::MOP::Attribute')
+ ? $_[0]
+ : $self->_process_attribute(@_))
+ );
}
-
sub add_override_method_modifier {
my ($self, $name, $method, $_super_package) = @_;
- # need this for roles ...
- $_super_package ||= $self->name;
- my $super = $self->find_next_method_by_name($name);
- (defined $super)
- || confess "You cannot override '$name' because it has no super method";
- $self->add_method($name => bless sub {
- my @args = @_;
- no strict 'refs';
- no warnings 'redefine';
- local *{$_super_package . '::super'} = sub { $super->(@args) };
- return $method->(@args);
- } => 'Moose::Meta::Method::Overriden');
+
+ (!$self->has_method($name))
+ || confess "Cannot add an override method if a local method is already present";
+
+ $self->add_method($name => Moose::Meta::Method::Overriden->new(
+ method => $method,
+ class => $self,
+ package => $_super_package, # need this for roles
+ name => $name,
+ ));
}
sub add_augment_method_modifier {
- my ($self, $name, $method) = @_;
- my $super = $self->find_next_method_by_name($name);
- (defined $super)
- || confess "You cannot augment '$name' because it has no super method";
- my $_super_package = $super->package_name;
- # BUT!,... if this is an overriden method ....
- if ($super->isa('Moose::Meta::Method::Overriden')) {
- # we need to be sure that we actually
- # find the next method, which is not
- # an 'override' method, the reason is
- # that an 'override' method will not
- # be the one calling inner()
- my $real_super = $self->_find_next_method_by_name_which_is_not_overridden($name);
- $_super_package = $real_super->package_name;
- }
- $self->add_method($name => sub {
- my @args = @_;
- no strict 'refs';
- no warnings 'redefine';
- local *{$_super_package . '::inner'} = sub { $method->(@args) };
- return $super->(@args);
- });
+ my ($self, $name, $method) = @_;
+ (!$self->has_method($name))
+ || confess "Cannot add an augment method if a local method is already present";
+
+ $self->add_method($name => Moose::Meta::Method::Augmented->new(
+ method => $method,
+ class => $self,
+ name => $name,
+ ));
}
+## Private Utility methods ...
+
sub _find_next_method_by_name_which_is_not_overridden {
my ($self, $name) = @_;
- my @methods = $self->find_all_methods_by_name($name);
- foreach my $method (@methods) {
- return $method->{code}
+ foreach my $method ($self->find_all_methods_by_name($name)) {
+ return $method->{code}
if blessed($method->{code}) && !$method->{code}->isa('Moose::Meta::Method::Overriden');
}
return undef;
}
-package Moose::Meta::Method::Overriden;
+sub _fix_metaclass_incompatability {
+ my ($self, @superclasses) = @_;
+ foreach my $super (@superclasses) {
+ # don't bother if it does not have a meta.
+ next unless $super->can('meta');
+ next unless $super->meta->isa("Class::MOP::Class");
+ # get the name, make sure we take
+ # immutable classes into account
+ my $super_meta_name = ($super->meta->is_immutable
+ ? $super->meta->get_mutable_metaclass_name
+ : blessed($super->meta));
+ # if it's meta is a vanilla Moose,
+ # then we can safely ignore it.
+ next if $super_meta_name eq 'Moose::Meta::Class';
+ # but if we have anything else,
+ # we need to check it out ...
+ unless (# see if of our metaclass is incompatible
+ ($self->isa($super_meta_name) &&
+ # and see if our instance metaclass is incompatible
+ $self->instance_metaclass->isa($super->meta->instance_metaclass)) &&
+ # ... and if we are just a vanilla Moose
+ $self->isa('Moose::Meta::Class')) {
+ # re-initialize the meta ...
+ my $super_meta = $super->meta;
+ # NOTE:
+ # We might want to consider actually
+ # transfering any attributes from the
+ # original meta into this one, but in
+ # general you should not have any there
+ # at this point anyway, so it's very
+ # much an obscure edge case anyway
+ $self = $super_meta->reinitialize($self->name => (
+ 'attribute_metaclass' => $super_meta->attribute_metaclass,
+ 'method_metaclass' => $super_meta->method_metaclass,
+ 'instance_metaclass' => $super_meta->instance_metaclass,
+ ));
+ }
+ }
+ return $self;
+}
-use strict;
-use warnings;
+# NOTE:
+# this was crap anyway, see
+# Moose::Util::apply_all_roles
+# instead
+sub _apply_all_roles {
+ Carp::croak 'DEPRECATED: use Moose::Util::apply_all_roles($meta, @roles) instead'
+}
+
+sub _process_attribute {
+ my ( $self, $name, @args ) = @_;
+
+ @args = %{$args[0]} if scalar @args == 1 && ref($args[0]) eq 'HASH';
+
+ if ($name =~ /^\+(.*)/) {
+ return $self->_process_inherited_attribute($1, @args);
+ }
+ else {
+ return $self->_process_new_attribute($name, @args);
+ }
+}
+
+sub _process_new_attribute {
+ my ( $self, $name, @args ) = @_;
+
+ $self->attribute_metaclass->interpolate_class_and_new($name, @args);
+}
+
+sub _process_inherited_attribute {
+ my ($self, $attr_name, %options) = @_;
+ my $inherited_attr = $self->find_attribute_by_name($attr_name);
+ (defined $inherited_attr)
+ || confess "Could not find an attribute by the name of '$attr_name' to inherit from";
+ if ($inherited_attr->isa('Moose::Meta::Attribute')) {
+ return $inherited_attr->clone_and_inherit_options(%options);
+ }
+ else {
+ # NOTE:
+ # kind of a kludge to handle Class::MOP::Attributes
+ return $inherited_attr->Moose::Meta::Attribute::clone_and_inherit_options(%options);
+ }
+}
-our $VERSION = '0.01';
+## -------------------------------------------------
+
+use Moose::Meta::Method::Constructor;
+use Moose::Meta::Method::Destructor;
+
+# This could be done by using SUPER and altering ->options
+# I am keeping it this way to make it more explicit.
+sub create_immutable_transformer {
+ my $self = shift;
+ my $class = Class::MOP::Immutable->new($self, {
+ read_only => [qw/superclasses/],
+ cannot_call => [qw/
+ add_method
+ alias_method
+ remove_method
+ add_attribute
+ remove_attribute
+ remove_package_symbol
+ add_role
+ /],
+ memoize => {
+ class_precedence_list => 'ARRAY',
+ compute_all_applicable_attributes => 'ARRAY',
+ get_meta_instance => 'SCALAR',
+ get_method_map => 'SCALAR',
+ # maybe ....
+ calculate_all_roles => 'ARRAY',
+ },
+ # NOTE:
+ # this is ugly, but so are typeglobs,
+ # so whattayahgonnadoboutit
+ # - SL
+ wrapped => {
+ add_package_symbol => sub {
+ my $original = shift;
+ confess "Cannot add package symbols to an immutable metaclass"
+ unless (caller(2))[3] eq 'Class::MOP::Package::get_package_symbol';
+ goto $original->body;
+ },
+ },
+ });
+ return $class;
+}
-use base 'Class::MOP::Method';
+sub make_immutable {
+ my $self = shift;
+ $self->SUPER::make_immutable
+ (
+ constructor_class => 'Moose::Meta::Method::Constructor',
+ destructor_class => 'Moose::Meta::Method::Destructor',
+ inline_destructor => 1,
+ # NOTE:
+ # no need to do this,
+ # Moose always does it
+ inline_accessors => 0,
+ @_,
+ );
+}
1;
=head1 DESCRIPTION
-This is a subclass of L<Class::MOP::Class> with Moose specific
+This is a subclass of L<Class::MOP::Class> with Moose specific
extensions.
-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
+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 METHODS
=over 4
+=item B<initialize>
+
+=item B<create>
+
+Overrides original to accept a list of roles to apply to
+the created class.
+
+ my $metaclass = Moose::Meta::Class->create( 'New::Class', roles => [...] );
+
+=item B<create_anon_class>
+
+Overrides original to support roles and caching.
+
+ my $metaclass = Moose::Meta::Class->create_anon_class(
+ superclasses => ['Foo'],
+ roles => [qw/Some Roles Go Here/],
+ cache => 1,
+ );
+
+=item B<make_immutable>
+
+Override original to add default options for inlining destructor
+and altering the Constructor metaclass.
+
+=item B<create_immutable_transformer>
+
+Override original to lock C<add_role> and memoize C<calculate_all_roles>
+
+=item B<new_object>
+
+We override this method to support the C<trigger> attribute option.
+
=item B<construct_instance>
-This provides some Moose specific extensions to this method, you
-almost never call this method directly unless you really know what
-you are doing.
+This provides some Moose specific extensions to this method, you
+almost never call this method directly unless you really know what
+you are doing.
This method makes sure to handle the moose weak-ref, type-constraint
-and type coercion features.
+and type coercion features.
-=item B<has_method ($name)>
+=item B<get_method_map>
-This accomidates Moose::Meta::Role::Method instances, which are
-aliased, instead of added, but still need to be counted as valid
+This accommodates Moose::Meta::Role::Method instances, which are
+aliased, instead of added, but still need to be counted as valid
methods.
=item B<add_override_method_modifier ($name, $method)>
+This will create an C<override> method modifier for you, and install
+it in the package.
+
=item B<add_augment_method_modifier ($name, $method)>
+This will create an C<augment> method modifier for you, and install
+it in the package.
+
+=item B<calculate_all_roles>
+
=item B<roles>
+This will return an array of C<Moose::Meta::Role> instances which are
+attached to this class.
+
=item B<add_role ($role)>
+This takes an instance of C<Moose::Meta::Role> in C<$role>, and adds it
+to the list of associated roles.
+
=item B<does_role ($role_name)>
+This will test if this class C<does> a given C<$role_name>. It will
+not only check it's local roles, but ask them as well in order to
+cascade down the role hierarchy.
+
+=item B<excludes_role ($role_name)>
+
+This will test if this class C<excludes> a given C<$role_name>. It will
+not only check it's local roles, but ask them as well in order to
+cascade down the role hierarchy.
+
+=item B<add_attribute ($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.
+
=back
=head1 BUGS
-All complex software has bugs lurking in it, and this module is no
+All complex software has bugs lurking in it, and this module is no
exception. If you find a bug please either email me, or add the bug
to cpan-RT.
=head1 COPYRIGHT AND LICENSE
-Copyright 2006 by Infinity Interactive, Inc.
+Copyright 2006-2008 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
+it under the same terms as Perl itself.
+
+=cut
-=cut
\ No newline at end of file
projects / gitmo/Moose.git / blobdiff