use Scalar::Util 'blessed', 'reftype';
use Carp 'confess';
+use Sub::Name 'subname';
-our $VERSION = '0.89';
+our $VERSION = '0.92';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
my %options = @args;
my $package_name = delete $options{package};
- (defined $package_name && $package_name && !blessed($package_name))
- || confess "You must pass a package name and it cannot be blessed";
+ (defined $package_name && $package_name
+ && (!blessed $package_name || $package_name->isa('Class::MOP::Package')))
+ || confess "You must pass a package name or an existing Class::MOP::Package instance";
+
+ $package_name = $package_name->name
+ if blessed $package_name;
Class::MOP::remove_metaclass_by_name($package_name);
\%{$_[0]->{'package'} . '::'}
}
+sub method_metaclass { $_[0]->{'method_metaclass'} }
+sub wrapped_method_metaclass { $_[0]->{'wrapped_method_metaclass'} }
+
+sub _method_map { $_[0]->{'methods'} }
+
# utility methods
{
}
}
+## Methods
+
+sub wrap_method_body {
+ my ( $self, %args ) = @_;
+
+ ('CODE' eq ref $args{body})
+ || confess "Your code block must be a CODE reference";
+
+ $self->method_metaclass->wrap(
+ package_name => $self->name,
+ %args,
+ );
+}
+
+sub add_method {
+ my ($self, $method_name, $method) = @_;
+ (defined $method_name && $method_name)
+ || confess "You must define a method name";
+
+ my $body;
+ if (blessed($method)) {
+ $body = $method->body;
+ if ($method->package_name ne $self->name) {
+ $method = $method->clone(
+ package_name => $self->name,
+ name => $method_name
+ ) if $method->can('clone');
+ }
+
+ $method->attach_to_class($self);
+ $self->_method_map->{$method_name} = $method;
+ }
+ else {
+ # If a raw code reference is supplied, its method object is not created.
+ # The method object won't be created until required.
+ $body = $method;
+ }
+
+
+ my ( $current_package, $current_name ) = Class::MOP::get_code_info($body);
+
+ if ( !defined $current_name || $current_name eq '__ANON__' ) {
+ my $full_method_name = ($self->name . '::' . $method_name);
+ subname($full_method_name => $body);
+ }
+
+ $self->add_package_symbol(
+ { sigil => '&', type => 'CODE', name => $method_name },
+ $body,
+ );
+}
+
+sub _code_is_mine {
+ my ( $self, $code ) = @_;
+
+ my ( $code_package, $code_name ) = Class::MOP::get_code_info($code);
+
+ return $code_package && $code_package eq $self->name
+ || ( $code_package eq 'constant' && $code_name eq '__ANON__' );
+}
+
+sub has_method {
+ my ($self, $method_name) = @_;
+ (defined $method_name && $method_name)
+ || confess "You must define a method name";
+
+ return defined($self->get_method($method_name));
+}
+
+sub get_method {
+ my ($self, $method_name) = @_;
+ (defined $method_name && $method_name)
+ || confess "You must define a method name";
+
+ my $method_map = $self->_method_map;
+ my $method_object = $method_map->{$method_name};
+ my $code = $self->get_package_symbol({
+ name => $method_name,
+ sigil => '&',
+ type => 'CODE',
+ });
+
+ unless ( $method_object && $method_object->body == ( $code || 0 ) ) {
+ if ( $code && $self->_code_is_mine($code) ) {
+ $method_object = $method_map->{$method_name}
+ = $self->wrap_method_body(
+ body => $code,
+ name => $method_name,
+ associated_metaclass => $self,
+ );
+ }
+ else {
+ delete $method_map->{$method_name};
+ return undef;
+ }
+ }
+
+ return $method_object;
+}
+
+sub remove_method {
+ my ($self, $method_name) = @_;
+ (defined $method_name && $method_name)
+ || confess "You must define a method name";
+
+ my $removed_method = delete $self->get_method_map->{$method_name};
+
+ $self->remove_package_symbol(
+ { sigil => '&', type => 'CODE', name => $method_name }
+ );
+
+ $removed_method->detach_from_class if $removed_method;
+
+ $self->update_package_cache_flag; # still valid, since we just removed the method from the map
+
+ return $removed_method;
+}
+
+sub get_method_list {
+ my $self = shift;
+ return grep { $self->has_method($_) } keys %{ $self->namespace };
+}
+
1;
__END__
represents specified package. If an existing metaclass object exists
for the package, that will be returned instead.
-=item B<< Class::MOP::Package->reinitialize($package_name) >>
+=item B<< Class::MOP::Package->reinitialize($package) >>
This method forcibly removes any existing metaclass for the package
-before calling C<initialize>
+before calling C<initialize>. In contrast to C<initialize>, you may
+also pass an existing C<Class::MOP::Package> instance instead of just
+a package name as C<$package>.
Do not call this unless you know what you are doing.
hash reference. The keys are glob names and the values are references
to the value for that name.
+=back
+
+=head2 Method introspection and creation
+
+These methods allow you to introspect a class's methods, as well as
+add, remove, or change methods.
+
+Determining what is truly a method in a Perl 5 class requires some
+heuristics (aka guessing).
+
+Methods defined outside the package with a fully qualified name (C<sub
+Package::name { ... }>) will be included. Similarly, methods named
+with a fully qualified name using L<Sub::Name> are also included.
+
+However, we attempt to ignore imported functions.
+
+Ultimately, we are using heuristics to determine what truly is a
+method in a class, and these heuristics may get the wrong answer in
+some edge cases. However, for most "normal" cases the heuristics work
+correctly.
+
+=over 4
+
+=item B<< $metapackage->get_method($method_name) >>
+
+This will return a L<Class::MOP::Method> for the specified
+C<$method_name>. If the class does not have the specified method, it
+returns C<undef>
+
+=item B<< $metapackage->has_method($method_name) >>
+
+Returns a boolean indicating whether or not the class defines the
+named method. It does not include methods inherited from parent
+classes.
+
+=item B<< $metapackage->get_method_map >>
+
+Returns a hash reference representing the methods defined in this
+class. The keys are method names and the values are
+L<Class::MOP::Method> objects.
+
+=item B<< $metapackage->get_method_list >>
+
+This will return a list of method I<names> for all methods defined in
+this class.
+
+=item B<< $metapackage->add_method($method_name, $method) >>
+
+This method takes a method name and a subroutine reference, and adds
+the method to the class.
+
+The subroutine reference can be a L<Class::MOP::Method>, and you are
+strongly encouraged to pass a meta method object instead of a code
+reference. If you do so, that object gets stored as part of the
+class's method map directly. If not, the meta information will have to
+be recreated later, and may be incorrect.
+
+If you provide a method object, this method will clone that object if
+the object's package name does not match the class name. This lets us
+track the original source of any methods added from other classes
+(notably Moose roles).
+
+=item B<< $metapackage->remove_method($method_name) >>
+
+Remove the named method from the class. This method returns the
+L<Class::MOP::Method> object for the method.
+
+=item B<< $metapackage->method_metaclass >>
+
+Returns the class name of the method metaclass, see
+L<Class::MOP::Method> for more information on the method metaclass.
+
+=item B<< $metapackage->wrapped_method_metaclass >>
+
+Returns the class name of the wrapped method metaclass, see
+L<Class::MOP::Method::Wrapped> for more information on the wrapped
+method metaclass.
+
=item B<< Class::MOP::Package->meta >>
This will return a L<Class::MOP::Class> instance for this class.
projects / gitmo/Class-MOP.git / blobdiff