use strict;
use warnings;
+use Class::MOP::Method::Accessor;
+
use Carp 'confess';
use Scalar::Util 'blessed', 'reftype', 'weaken';
# keep a weakened link to the
# class we are associated with
associated_class => undef,
+ # and a list of the methods
+ # associated with this attr
+ associated_methods => [],
} => $class;
}
sub name { $_[0]->{name} }
-sub associated_class { $_[0]->{associated_class} }
+sub associated_class { $_[0]->{associated_class} }
+sub associated_methods { $_[0]->{associated_methods} }
sub has_accessor { defined($_[0]->{accessor}) ? 1 : 0 }
sub has_reader { defined($_[0]->{reader}) ? 1 : 0 }
$self->{associated_class} = undef;
}
+# method association
+
+sub associate_method {
+ my ($self, $method) = @_;
+ push @{$self->{associated_methods}} => $method;
+}
+
## Slot management
sub set_value {
my ($self, $instance, $value) = @_;
- Class::MOP::Class->initialize(Scalar::Util::blessed($instance))
+ Class::MOP::Class->initialize(blessed($instance))
->get_meta_instance
- ->set_slot_value( $instance, $self->name, $value );
+ ->set_slot_value($instance, $self->name, $value);
}
sub get_value {
my ($self, $instance) = @_;
- Class::MOP::Class->initialize(Scalar::Util::blessed($instance))
+ Class::MOP::Class->initialize(blessed($instance))
->get_meta_instance
->get_slot_value($instance, $self->name);
}
-## Method generation helpers
-
-sub generate_accessor_method {
- my $attr = shift;
- return sub {
- $attr->set_value($_[0], $_[1]) if scalar(@_) == 2;
- $attr->get_value($_[0]);
- };
-}
-
-sub generate_accessor_method_inline {
- my $self = shift;
- my $attr_name = $self->name;
- my $meta_instance = $self->associated_class->instance_metaclass;
-
- my $code = eval 'sub {'
- . $meta_instance->inline_set_slot_value('$_[0]', "'$attr_name'", '$_[1]') . ' if scalar(@_) == 2; '
- . $meta_instance->inline_get_slot_value('$_[0]', "'$attr_name'")
- . '}';
- confess "Could not generate inline accessor because : $@" if $@;
-
- return $code;
-}
-
-sub generate_reader_method {
- my $attr = shift;
- return sub {
- confess "Cannot assign a value to a read-only accessor" if @_ > 1;
- $attr->get_value($_[0]);
- };
-}
-
-sub generate_reader_method_inline {
- my $self = shift;
- my $attr_name = $self->name;
- my $meta_instance = $self->associated_class->instance_metaclass;
-
- my $code = eval 'sub {'
- . 'confess "Cannot assign a value to a read-only accessor" if @_ > 1;'
- . $meta_instance->inline_get_slot_value('$_[0]', "'$attr_name'")
- . '}';
- confess "Could not generate inline accessor because : $@" if $@;
-
- return $code;
-}
-
-sub generate_writer_method {
- my $attr = shift;
- return sub {
- $attr->set_value($_[0], $_[1]);
- };
-}
-
-sub generate_writer_method_inline {
- my $self = shift;
- my $attr_name = $self->name;
- my $meta_instance = $self->associated_class->instance_metaclass;
-
- my $code = eval 'sub {'
- . $meta_instance->inline_set_slot_value('$_[0]', "'$attr_name'", '$_[1]')
- . '}';
- confess "Could not generate inline accessor because : $@" if $@;
-
- return $code;
-}
-
-sub generate_predicate_method {
- my $self = shift;
- my $attr_name = $self->name;
- return sub {
- defined Class::MOP::Class->initialize(Scalar::Util::blessed($_[0]))
- ->get_meta_instance
- ->get_slot_value($_[0], $attr_name) ? 1 : 0;
- };
-}
-
-sub generate_clearer_method {
- my $self = shift;
- my $attr_name = $self->name;
- return sub {
- Class::MOP::Class->initialize(Scalar::Util::blessed($_[0]))
- ->get_meta_instance
- ->deinitialize_slot($_[0], $attr_name);
- };
+sub has_value {
+ my ($self, $instance) = @_;
+
+ defined Class::MOP::Class->initialize(blessed($instance))
+ ->get_meta_instance
+ ->get_slot_value($instance, $self->name) ? 1 : 0;
}
-sub generate_predicate_method_inline {
- my $self = shift;
- my $attr_name = $self->name;
- my $meta_instance = $self->associated_class->instance_metaclass;
-
- my $code = eval 'sub {'
- . 'defined ' . $meta_instance->inline_get_slot_value('$_[0]', "'$attr_name'") . ' ? 1 : 0'
- . '}';
- confess "Could not generate inline predicate because : $@" if $@;
-
- return $code;
+sub clear_value {
+ my ($self, $instance) = @_;
+
+ Class::MOP::Class->initialize(blessed($instance))
+ ->get_meta_instance
+ ->deinitialize_slot($instance, $self->name);
}
-sub generate_clearer_method_inline {
- my $self = shift;
- my $attr_name = $self->name;
- my $meta_instance = $self->associated_class->instance_metaclass;
-
- my $code = eval 'sub {'
- . $meta_instance->inline_deinitialize_slot('$_[0]', "'$attr_name'")
- . '}';
- confess "Could not generate inline clearer because : $@" if $@;
+## load em up ...
- return $code;
-}
+sub accessor_metaclass { 'Class::MOP::Method::Accessor' }
sub process_accessors {
my ($self, $type, $accessor, $generate_as_inline_methods) = @_;
(reftype($accessor) eq 'HASH')
|| confess "bad accessor/reader/writer/predicate/clearer format, must be a HASH ref";
my ($name, $method) = %{$accessor};
- return ($name, Class::MOP::Attribute::Accessor->wrap($method));
+ $method = $self->accessor_metaclass->wrap($method);
+ $self->associate_method($method);
+ return ($name, $method);
}
else {
- my $inline_me = ($generate_as_inline_methods && $self->associated_class->instance_metaclass->is_inlinable);
- my $generator = $self->can('generate_' . $type . '_method' . ($inline_me ? '_inline' : ''));
- ($generator)
- || confess "There is no method generator for the type='$type'";
- if (my $method = $self->$generator($self->name)) {
- return ($accessor => Class::MOP::Attribute::Accessor->wrap($method));
- }
- confess "Could not create the '$type' method for " . $self->name . " because : $@";
+ my $inline_me = ($generate_as_inline_methods && $self->associated_class->instance_metaclass->is_inlinable);
+ my $method;
+ eval {
+ $method = $self->accessor_metaclass->new(
+ attribute => $self,
+ as_inline => $inline_me,
+ accessor_type => $type,
+ );
+ };
+ confess "Could not create the '$type' method for " . $self->name . " because : $@" if $@;
+ $self->associate_method($method);
+ return ($accessor, $method);
}
}
}
my $method = $class->get_method($accessor);
$class->remove_method($accessor)
- if (blessed($method) && $method->isa('Class::MOP::Attribute::Accessor'));
+ if (blessed($method) && $method->isa('Class::MOP::Method::Accessor'));
};
sub remove_accessors {
}
-package Class::MOP::Attribute::Accessor;
-
-use strict;
-use warnings;
-
-use Class::MOP::Method;
-
-our $VERSION = '0.02';
-our $AUTHORITY = 'cpan:STEVAN';
-
-use base 'Class::MOP::Method';
-
1;
__END__
=over 4
-=item set_value $instance, $value
+=item B<set_value ($instance, $value)>
Set the value without going through the accessor. Note that this may be done to
even attributes with just read only accessors.
-=item get_value $instance
+=item B<get_value ($instance)>
Return the value without going through the accessor. Note that this may be done
even to attributes with just write only accessors.
+=item B<has_value ($instance)>
+
+=item B<clear_value ($instance)>
+
=back
=head2 Informational
=item B<detach_from_class>
-=item B<slot_name>
-
-=item B<allocate_slots>
-
-=item B<deallocate_slots>
-
=back
=head2 Attribute Accessor generation
=over 4
+=item B<accessor_metaclass>
+
+=item B<associate_method>
+
+=item B<associated_methods>
+
=item B<install_accessors>
This allows the attribute to generate and install code for it's own
(using the C<generate_*_method> methods listed below) or it will
use the custom method passed through the constructor.
-=over 4
-
-=item B<generate_accessor_method>
-
-=item B<generate_predicate_method>
-
-=item B<generate_clearer_method>
-
-=item B<generate_reader_method>
-
-=item B<generate_writer_method>
-
-=back
-
-=over 4
-
-=item B<generate_accessor_method_inline>
-
-=item B<generate_predicate_method_inline>
-
-=item B<generate_clearer_method_inline>
-
-=item B<generate_reader_method_inline>
-
-=item B<generate_writer_method_inline>
-
-=back
-
=item B<remove_accessors>
This allows the attribute to remove the method for it's own
projects / gitmo/Class-MOP.git / blobdiff