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'} }
54 my $metaclass = shift;
56 ( blessed $metaclass && $metaclass->isa('Class::MOP::Class') )
57 || $self->throw_error(
58 "The is_needed method expected a metaclass object as its arugment");
60 return $metaclass->find_method_by_name("DEMOLISHALL");
64 Carp::cluck('The initialize_body method has been made private.'
65 . " The public version is deprecated and will be removed in a future release.\n");
66 shift->_initialize_body;
69 sub _initialize_body {
72 # the %options should also include a both
73 # a call 'initializer' and call 'SUPER::'
74 # options, which should cover approx 90%
75 # of the possible use cases (even if it
76 # requires some adaption on the part of
77 # the author, after all, nothing is free)
79 my @DEMOLISH_methods = $self->associated_metaclass->find_all_methods_by_name('DEMOLISH');
82 if ( @DEMOLISH_methods ) {
86 foreach my $method (@DEMOLISH_methods) {
87 push @DEMOLISH_calls => '$_[0]->' . $method->{class} . '::DEMOLISH()';
90 $source .= join ";\n" => @DEMOLISH_calls;
92 $source .= ";\n" . '}';
97 warn $source if $self->options->{debug};
99 my $code = $self->_compile_code(
102 ) or $self->throw_error("Could not eval the destructor :\n\n$source\n\nbecause :\n\n$@", error => $@, data => $source);
104 $self->{'body'} = $code;
116 Moose::Meta::Method::Destructor - Method Meta Object for destructors
120 This class is a subclass of L<Class::MOP::Class::Generated> that
121 provides Moose-specific functionality for inlining destructors.
123 To understand this class, you should read the the
124 L<Class::MOP::Class::Generated> documentation as well.
128 C<Moose::Meta::Method::Destructor> is a subclass of
129 L<Moose::Meta::Method> I<and> L<Class::MOP::Method::Generated>.
135 =item B<< Moose::Meta;:Method::Destructor->new(%options) >>
137 This constructs a new object. It accepts the following options:
143 The package for the class in which the destructor is being
144 inlined. This option is required.
148 The name of the destructor method. This option is required.
152 The metaclass for the class this destructor belongs to. This is
153 optional, as it can be set later by calling C<<
154 $metamethod->attach_to_class >>.
158 =item B<< Moose::Meta;:Method::Destructor->is_needed($metaclass) >>
160 Given a L<Moose::Meta::Class> object, this method returns a boolean
161 indicating whether the class needs a destructor. If the class or any
162 of its parents defines a C<DEMOLISH> method, it needs a destructor.
168 Stevan Little E<lt>stevan@iinteractive.comE<gt>
170 =head1 COPYRIGHT AND LICENSE
172 Copyright 2006-2009 by Infinity Interactive, Inc.
174 L<http://www.iinteractive.com>
176 This library is free software; you can redistribute it and/or modify
177 it under the same terms as Perl itself.