2 package Class::MOP::Package;
7 use Scalar::Util 'blessed';
11 our $VERSION = '0.02';
16 require Class::MOP::Class;
17 Class::MOP::Class->initialize(blessed($_[0]) || $_[0]);
24 my $package_name = shift;
25 # we hand-construct the class
26 # until we can bootstrap it
29 '$:package' => $package_name,
30 '%:namespace' => \%{$package_name . '::'},
37 # all these attribute readers will be bootstrapped
38 # away in the Class::MOP bootstrap section
40 sub name { $_[0]->{'$:package'} }
41 sub namespace { $_[0]->{'%:namespace'} }
53 sub _deconstruct_variable_name {
54 my ($self, $variable) = @_;
57 || confess "You must pass a variable name";
59 my ($sigil, $name) = ($variable =~ /^(.)(.*)$/);
62 || confess "The variable name must include a sigil";
64 (exists $SIGIL_MAP{$sigil})
65 || confess "I do not recognize that sigil '$sigil'";
67 return ($name, $sigil, $SIGIL_MAP{$sigil});
73 sub add_package_symbol {
74 my ($self, $variable, $initial_value) = @_;
76 my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
80 no warnings 'redefine', 'misc';
81 *{$self->name . '::' . $name} = $initial_value;
84 sub has_package_symbol {
85 my ($self, $variable) = @_;
87 my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
89 return 0 unless exists $self->namespace->{$name};
90 defined *{$self->namespace->{$name}}{$type} ? 1 : 0;
93 sub get_package_symbol {
94 my ($self, $variable) = @_;
96 my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
98 $self->add_package_symbol($variable)
99 unless exists $self->namespace->{$name};
100 return *{$self->namespace->{$name}}{$type};
103 sub remove_package_symbol {
104 my ($self, $variable) = @_;
106 my ($name, $sigil, $type) = $self->_deconstruct_variable_name($variable);
109 if ($type eq 'SCALAR') {
110 undef ${$self->name . '::' . $name};
112 elsif ($type eq 'ARRAY') {
113 undef @{$self->name . '::' . $name};
115 elsif ($type eq 'HASH') {
116 undef %{$self->name . '::' . $name};
118 elsif ($type eq 'CODE') {
120 # this is crap, it is probably much
121 # easier to write this in XS.
122 my ($scalar, @array, %hash);
123 $scalar = ${$self->name . '::' . $name} if defined *{$self->namespace->{$name}}{SCALAR};
124 @array = @{$self->name . '::' . $name} if defined *{$self->namespace->{$name}}{ARRAY};
125 %hash = %{$self->name . '::' . $name} if defined *{$self->namespace->{$name}}{HASH};
127 delete ${$self->name . '::'}{$name};
129 ${$self->name . '::' . $name} = $scalar if defined $scalar;
130 @{$self->name . '::' . $name} = @array if scalar @array;
131 %{$self->name . '::' . $name} = %hash if keys %hash;
134 confess "This should never ever ever happen";
138 sub list_all_package_symbols {
140 return keys %{$self->namespace};
151 Class::MOP::Package - Package Meta Object
169 =item B<add_package_symbol>
171 =item B<get_package_symbol>
173 =item B<has_package_symbol>
175 =item B<remove_package_symbol>
177 =item B<list_all_package_symbols>
183 Stevan Little E<lt>stevan@iinteractive.comE<gt>
185 Yuval Kogman E<lt>nothingmuch@woobling.comE<gt>
187 =head1 COPYRIGHT AND LICENSE
189 Copyright 2006 by Infinity Interactive, Inc.
191 L<http://www.iinteractive.com>
193 This library is free software; you can redistribute it and/or modify
194 it under the same terms as Perl itself.