1 package Class::MOP::Mixin::AttributeCore;
7 $VERSION = eval $VERSION;
8 our $AUTHORITY = 'cpan:STEVAN';
10 use Scalar::Util 'blessed';
12 use base 'Class::MOP::Mixin';
14 sub has_accessor { defined $_[0]->{'accessor'} }
15 sub has_reader { defined $_[0]->{'reader'} }
16 sub has_writer { defined $_[0]->{'writer'} }
17 sub has_predicate { defined $_[0]->{'predicate'} }
18 sub has_clearer { defined $_[0]->{'clearer'} }
19 sub has_builder { defined $_[0]->{'builder'} }
20 sub has_init_arg { defined $_[0]->{'init_arg'} }
21 sub has_default { defined $_[0]->{'default'} }
22 sub has_initializer { defined $_[0]->{'initializer'} }
23 sub has_insertion_order { defined $_[0]->{'insertion_order'} }
25 sub accessor { $_[0]->{'accessor'} }
26 sub reader { $_[0]->{'reader'} }
27 sub writer { $_[0]->{'writer'} }
28 sub predicate { $_[0]->{'predicate'} }
29 sub clearer { $_[0]->{'clearer'} }
30 sub builder { $_[0]->{'builder'} }
31 sub init_arg { $_[0]->{'init_arg'} }
32 sub initializer { $_[0]->{'initializer'} }
33 sub definition_context { $_[0]->{'definition_context'} }
34 sub insertion_order { $_[0]->{'insertion_order'} }
35 sub _set_insertion_order { $_[0]->{'insertion_order'} = $_[1] }
37 sub has_read_method { $_[0]->has_reader || $_[0]->has_accessor }
38 sub has_write_method { $_[0]->has_writer || $_[0]->has_accessor }
40 sub is_default_a_coderef {
41 # Uber hack because it is called from CMOP::Attribute constructor as
42 # $class->is_default_a_coderef(\%options)
43 my ($value) = ref $_[0] ? $_[0]->{'default'} : $_[1]->{'default'};
45 return unless ref($value);
47 return ref($value) eq 'CODE'
48 || ( blessed($value) && $value->isa('Class::MOP::Method') );
52 my ( $self, $instance ) = @_;
53 if ( defined $instance && $self->is_default_a_coderef ) {
54 # if the default is a CODE ref, then we pass in the instance and
55 # default can return a value based on that instance. Somewhat crude,
57 return $self->{'default'}->($instance);
70 Class::MOP::Mixin::AttributeCore - Core attributes shared by attribute metaclasses
74 This class implements the core attributes (aka properties) shared by all
75 attributes. See the L<Class::MOP::Attribute> documentation for API details.
79 Dave Rolsky E<lt>autarch@urth.orgE<gt>
81 =head1 COPYRIGHT AND LICENSE
83 Copyright 2006-2010 by Infinity Interactive, Inc.
85 L<http://www.iinteractive.com>
87 This library is free software; you can redistribute it and/or modify
88 it under the same terms as Perl itself.