2 package Moose::Meta::Method::Destructor;
7 use Scalar::Util 'blessed', 'weaken';
10 $VERSION = eval $VERSION;
11 our $AUTHORITY = 'cpan:STEVAN';
13 use base 'Moose::Meta::Method',
14 'Class::MOP::Method::Generated';
20 (ref $options{options} eq 'HASH')
21 || $class->throw_error("You must pass a hash of options", data => $options{options});
23 ($options{package_name} && $options{name})
24 || $class->throw_error("You must supply the package_name and name parameters $Class::MOP::Method::UPGRADE_ERROR_TEXT");
29 'package_name' => $options{package_name},
30 'name' => $options{name},
32 'options' => $options{options},
33 'associated_metaclass' => $options{metaclass},
36 # we don't want this creating
37 # a cycle in the code, if not
39 weaken($self->{'associated_metaclass'});
41 $self->initialize_body;
48 sub options { (shift)->{'options'} }
49 sub associated_metaclass { (shift)->{'associated_metaclass'} }
55 # if called as a class method
56 # then must pass in a class name
57 unless (blessed $self) {
58 (blessed $_[0] && $_[0]->isa('Class::MOP::Class'))
59 || $self->throw_error("When calling is_needed as a class method you must pass a class name");
60 return $_[0]->meta->can('DEMOLISH');
62 defined $self->{'body'} ? 1 : 0
68 # the %options should also include a both
69 # a call 'initializer' and call 'SUPER::'
70 # options, which should cover approx 90%
71 # of the possible use cases (even if it
72 # requires some adaption on the part of
73 # the author, after all, nothing is free)
75 my @DEMOLISH_methods = $self->associated_metaclass->find_all_methods_by_name('DEMOLISH');
77 return unless @DEMOLISH_methods;
82 foreach my $method (@DEMOLISH_methods) {
83 push @DEMOLISH_calls => '$_[0]->' . $method->{class} . '::DEMOLISH()';
86 $source .= join ";\n" => @DEMOLISH_calls;
88 $source .= ";\n" . '}';
89 warn $source if $self->options->{debug};
91 my $code = $self->_compile_code(
94 ) or $self->throw_error("Could not eval the destructor :\n\n$source\n\nbecause :\n\n$@", error => $@, data => $source);
96 $self->{'body'} = $code;
108 Moose::Meta::Method::Destructor - Method Meta Object for destructors
112 This is a subclass of L<Class::MOP::Method> which handles
113 constructing an appropriate Destructor method. This is primarily
114 used in the making of immutable metaclasses, otherwise it is
115 not particularly useful.
125 =item B<meta_instance>
131 =item B<initialize_body>
133 =item B<associated_metaclass>
139 Stevan Little E<lt>stevan@iinteractive.comE<gt>
141 =head1 COPYRIGHT AND LICENSE
143 Copyright 2006-2009 by Infinity Interactive, Inc.
145 L<http://www.iinteractive.com>
147 This library is free software; you can redistribute it and/or modify
148 it under the same terms as Perl itself.