use Carp 'confess';
use Scalar::Util 'blessed', 'reftype', 'weaken';
-use Sub::Name 'subname';
-our $VERSION = '0.27';
+our $VERSION = '0.31';
our $AUTHORITY = 'cpan:STEVAN';
use base 'Class::MOP::Module';
-# Self-introspection
-
-sub meta { Class::MOP::Class->initialize(blessed($_[0]) || $_[0]) }
-
# Creation
sub initialize {
"(I found an uneven number of params in \@_)";
my (%options) = @_;
+
+ (ref $options{superclasses} eq 'ARRAY')
+ || confess "You must pass an ARRAY ref of superclasses"
+ if exists $options{superclasses};
+
+ (ref $options{attributes} eq 'ARRAY')
+ || confess "You must pass an ARRAY ref of attributes"
+ if exists $options{attributes};
+
+ (ref $options{methods} eq 'HASH')
+ || confess "You must pass an HASH ref of methods"
+ if exists $options{methods};
my $code = "package $package_name;";
$code .= "\$$package_name\:\:VERSION = '" . $options{version} . "';"
$map->{$symbol}->body == $code;
my ($pkg, $name) = Class::MOP::get_code_info($code);
- next if ($pkg || '') ne $class_name &&
- ($name || '') ne '__ANON__';
+
+ next if ($pkg || '') ne $class_name ||
+ (($name || '') ne '__ANON__' && ($pkg || '') ne $class_name);
+
+ #warn "Checking $pkg against $class_name && $name against __ANON__";
$map->{$symbol} = $method_metaclass->wrap($code);
}
}
sub rebless_instance {
- my ($self, $instance) = @_;
+ my ($self, $instance, %params) = @_;
my $old_metaclass;
if ($instance->can('meta')) {
# rebless!
$meta_instance->rebless_instance_structure($instance, $self);
- my %params;
-
foreach my $attr ( $self->compute_all_applicable_attributes ) {
if ( $attr->has_value($instance) ) {
if ( defined( my $init_arg = $attr->init_arg ) ) {
- $params{$init_arg} = $attr->get_value($instance);
- } else {
- $attr->set_value($instance);
+ $params{$init_arg} = $attr->get_value($instance)
+ unless exists $params{$init_arg};
+ }
+ else {
+ $attr->set_value($instance, $attr->get_value($instance));
}
}
}
foreach my $attr ($self->compute_all_applicable_attributes) {
$attr->initialize_instance_slot($meta_instance, $instance, \%params);
}
-}
-
-sub get_attribute_values {
- my ($self, $instance) = @_;
-
- return +{
- map { $_->name => $_->get_value($instance) }
- grep { $_->has_value($instance) }
- $self->>compute_all_applicable_attributes
- };
-}
-
-sub get_init_args {
- my ($self, $instance) = @_;
-
- return +{
- map { $_->init_arg => $_->get_value($instance) }
- grep { $_->has_value($instance) }
- grep { defined($_->init_arg) }
- $self->compute_all_applicable_attributes
- };
+
+ $instance;
}
# Inheritance
sub linearized_isa {
- if (Class::MOP::IS_RUNNING_ON_5_10()) {
- return @{ mro::get_linear_isa( (shift)->name ) };
- }
- else {
- my %seen;
- return grep { !($seen{$_}++) } (shift)->class_precedence_list;
- }
+ return @{ mro::get_linear_isa( (shift)->name ) };
}
sub class_precedence_list {
my $self = shift;
+ my $name = $self->name;
unless (Class::MOP::IS_RUNNING_ON_5_10()) {
# NOTE:
# blow up otherwise. Yes, it's an ugly hack, better
# suggestions are welcome.
# - SL
- ($self->name || return)->isa('This is a test for circular inheritance')
+ ($name || return)->isa('This is a test for circular inheritance')
}
- (
- $self->name,
- map {
- $self->initialize($_)->class_precedence_list()
- } $self->superclasses()
- );
+ # if our mro is c3, we can
+ # just grab the linear_isa
+ if (mro::get_mro($name) eq 'c3') {
+ return @{ mro::get_linear_isa($name) }
+ }
+ else {
+ # NOTE:
+ # we can't grab the linear_isa for dfs
+ # since it has all the duplicates
+ # already removed.
+ return (
+ $name,
+ map {
+ $self->initialize($_)->class_precedence_list()
+ } $self->superclasses()
+ );
+ }
}
## Methods
my $body;
if (blessed($method)) {
$body = $method->body;
+ if ($method->package_name ne $self->name &&
+ $method->name ne $method_name) {
+ warn "Hello there, got somethig for you."
+ . " Method says " . $method->package_name . " " . $method->name
+ . " Class says " . $self->name . " " . $method_name;
+ $method = $method->clone(
+ package_name => $self->name,
+ name => $method_name
+ ) if $method->can('clone');
+ }
}
else {
$body = $method;
('CODE' eq (reftype($body) || ''))
|| confess "Your code block must be a CODE reference";
- $method = $self->method_metaclass->wrap($body);
+ $method = $self->method_metaclass->wrap(
+ $body => (
+ package_name => $self->name,
+ name => $method_name
+ )
+ );
}
$self->get_method_map->{$method_name} = $method;
-
- my $full_method_name = ($self->name . '::' . $method_name);
- $self->add_package_symbol("&${method_name}" => subname $full_method_name => $body);
+
+ my $full_method_name = ($self->name . '::' . $method_name);
+ $self->add_package_symbol("&${method_name}" =>
+ Class::MOP::subname($full_method_name => $body)
+ );
$self->update_package_cache_flag;
}
(defined $method_name && $method_name)
|| confess "You must pass in a method name";
my $method = $fetch_and_prepare_method->($self, $method_name);
- $method->add_before_modifier(subname ':before' => $method_modifier);
+ $method->add_before_modifier(
+ Class::MOP::subname(':before' => $method_modifier)
+ );
}
sub add_after_method_modifier {
(defined $method_name && $method_name)
|| confess "You must pass in a method name";
my $method = $fetch_and_prepare_method->($self, $method_name);
- $method->add_after_modifier(subname ':after' => $method_modifier);
+ $method->add_after_modifier(
+ Class::MOP::subname(':after' => $method_modifier)
+ );
}
sub add_around_method_modifier {
(defined $method_name && $method_name)
|| confess "You must pass in a method name";
my $method = $fetch_and_prepare_method->($self, $method_name);
- $method->add_around_modifier(subname ':around' => $method_modifier);
+ $method->add_around_modifier(
+ Class::MOP::subname(':around' => $method_modifier)
+ );
}
# NOTE:
print STDERR "# of Metaclass options: ", keys %IMMUTABLE_OPTIONS;
print STDERR "# of Immutable transformers: ", keys %IMMUTABLE_TRANSFORMERS;
}
+
+ 1;
}
sub make_mutable{
confess "unable to find immutabilizing options" unless ref $options;
my $transformer = delete $options->{IMMUTABLE_TRANSFORMER};
$transformer->make_metaclass_mutable($self, $options);
+ 1;
}
}
sub create_immutable_transformer {
my $self = shift;
my $class = Class::MOP::Immutable->new($self, {
- read_only => [qw/superclasses/],
- cannot_call => [qw/
+ read_only => [qw/superclasses/],
+ cannot_call => [qw/
add_method
alias_method
remove_method
add_attribute
remove_attribute
- add_package_symbol
remove_package_symbol
- /],
- memoize => {
+ /],
+ memoize => {
class_precedence_list => 'ARRAY',
linearized_isa => 'ARRAY',
compute_all_applicable_attributes => 'ARRAY',
get_meta_instance => 'SCALAR',
get_method_map => 'SCALAR',
- }
+ },
+ # 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;
}
=item B<reset_package_cache_flag>
-Clear this flag, used in Moose.
+Clears the package cache flag to announce to the internals that we need
+to rebuild the method map.
=back
=item B<instance_metaclass>
+Returns the class name of the instance metaclass, see L<Class::MOP::Instance>
+for more information on the instance metaclasses.
+
=item B<get_meta_instance>
+Returns an instance of L<Class::MOP::Instance> to be used in the construction
+of a new instance of the class.
+
=item B<new_object (%params)>
This is a convience method for creating a new object of the class, and
$class->meta->new_object(%params);
}
-Of course the ideal place for this would actually be in C<UNIVERSAL::>
-but that is considered bad style, so we do not do that.
-
=item B<construct_instance (%params)>
-This method is used to construct an instace structure suitable for
+This method is used to construct an instance structure suitable for
C<bless>-ing into your package of choice. It works in conjunction
with the Attribute protocol to collect all applicable attributes.
$self->meta->clone_object($self, %params);
}
-Of course the ideal place for this would actually be in C<UNIVERSAL::>
-but that is considered bad style, so we do not do that.
-
=item B<clone_instance($instance, %params)>
This method is a compliment of C<construct_instance> (which means if
think Yuval "nothingmuch" Kogman put it best when he said that cloning
is too I<context-specific> to be part of the MOP.
-=item B<get_attribute_values($instance)>
-
-Returns the values of the C<$instance>'s fields keyed by the attribute names.
-
-=item B<get_init_args($instance)>
-
-Returns a hash reference where the keys are all the attributes' C<init_arg>s
-and the values are the instance's fields. Attributes without an C<init_arg>
-will be skipped.
-
-=item B<rebless_instance($instance)>
+=item B<rebless_instance($instance, ?%params)>
This will change the class of C<$instance> to the class of the invoking
C<Class::MOP::Class>. You may only rebless the instance to a subclass of
-itself. This limitation may be relaxed in the future.
-
-This can be useful in a number of situations, such as when you are writing
-a program that doesn't know everything at object construction time.
+itself. You may pass in optional C<%params> which are like constructor
+params and will override anything already defined in the instance.
=back
relationships of the class the B<Class::MOP::Class> instance is
associated with. Basically, it can get and set the C<@ISA> for you.
-B<NOTE:>
-Perl will occasionally perform some C<@ISA> and method caching, if
-you decide to change your superclass relationship at runtime (which
-is quite insane and very much not recommened), then you should be
-aware of this and the fact that this module does not make any
-attempt to address this issue.
-
=item B<class_precedence_list>
This computes the a list of all the class's ancestors in the same order
-in which method dispatch will be done. This is similair to
-what B<Class::ISA::super_path> does, but we don't remove duplicate names.
+in which method dispatch will be done. This is similair to what
+B<Class::ISA::super_path> does, but we don't remove duplicate names.
=item B<linearized_isa>
=item B<subclasses>
-This returns a list of subclasses for this class.
+This returns a list of subclasses for this class.
=back
=item B<get_method_map>
+Returns a HASH ref of name to CODE reference mapping for this class.
+
=item B<method_metaclass>
+Returns the class name of the method metaclass, see L<Class::MOP::Method>
+for more information on the method metaclasses.
+
=item B<add_method ($method_name, $method)>
This will take a C<$method_name> and CODE reference to that
The Class::MOP::Method is codifiable, so you can use it like a normal
CODE reference, see L<Class::MOP::Method> for more information.
-=item B<find_method_by_name ($method_name>
+=item B<find_method_by_name ($method_name)>
This will return a CODE reference of the specified C<$method_name>,
or return undef if that method does not exist.
=item B<attribute_metaclass>
+Returns the class name of the attribute metaclass, see L<Class::MOP::Attribute>
+for more information on the attribute metaclasses.
+
=item B<get_attribute_map>
-=item B<add_attribute ($attribute_meta_object | $attribute_name, %attribute_spec)>
+This returns a HASH ref of name to attribute meta-object mapping.
+
+=item B<add_attribute ($attribute_meta_object | ($attribute_name, %attribute_spec))>
This stores the C<$attribute_meta_object> (or creates one from the
C<$attribute_name> and C<%attribute_spec>) in the B<Class::MOP::Class>
projects / gitmo/Class-MOP.git / blobdiff