Commit | Line | Data |
2243a22b |
1 | |
2 | package Class::MOP::Package; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
7 | use Scalar::Util 'blessed'; |
6d5355c3 |
8 | use Carp 'confess'; |
2243a22b |
9 | |
10 | our $VERSION = '0.01'; |
11 | |
12 | # introspection |
13 | |
14 | sub meta { |
15 | require Class::MOP::Class; |
16 | Class::MOP::Class->initialize(blessed($_[0]) || $_[0]); |
17 | } |
18 | |
6d5355c3 |
19 | # creation ... |
20 | |
21 | sub initialize { |
22 | my ($class, $package) = @_; |
23 | bless { '$:package' => $package } => $class; |
24 | } |
25 | |
26 | # Attributes |
27 | |
28 | # NOTE: |
29 | # all these attribute readers will be bootstrapped |
30 | # away in the Class::MOP bootstrap section |
31 | |
32 | sub name { $_[0]->{'$:package'} } |
33 | |
34 | # Class attributes |
35 | |
c0cbf4d9 |
36 | { |
37 | my %SIGIL_MAP = ( |
38 | '$' => 'SCALAR', |
39 | '@' => 'ARRAY', |
40 | '%' => 'HASH', |
41 | '&' => 'CODE', |
42 | ); |
6d5355c3 |
43 | |
c0cbf4d9 |
44 | sub add_package_symbol { |
45 | my ($self, $variable, $initial_value) = @_; |
6d5355c3 |
46 | |
c0cbf4d9 |
47 | (defined $variable) |
48 | || confess "You must pass a variable name"; |
6d5355c3 |
49 | |
c0cbf4d9 |
50 | my ($sigil, $name) = ($variable =~ /^(.)(.*)$/); |
6d5355c3 |
51 | |
c0cbf4d9 |
52 | (defined $sigil) |
53 | || confess "The variable name must include a sigil"; |
6d5355c3 |
54 | |
c0cbf4d9 |
55 | (exists $SIGIL_MAP{$sigil}) |
56 | || confess "I do not recognize that sigil '$sigil'"; |
6d5355c3 |
57 | |
c0cbf4d9 |
58 | no strict 'refs'; |
59 | no warnings 'misc'; |
60 | *{$self->name . '::' . $name} = $initial_value; |
61 | } |
6d5355c3 |
62 | |
c0cbf4d9 |
63 | sub has_package_symbol { |
64 | my ($self, $variable) = @_; |
65 | (defined $variable) |
66 | || confess "You must pass a variable name"; |
6d5355c3 |
67 | |
c0cbf4d9 |
68 | my ($sigil, $name) = ($variable =~ /^(.)(.*)$/); |
6d5355c3 |
69 | |
c0cbf4d9 |
70 | (defined $sigil) |
71 | || confess "The variable name must include a sigil"; |
6d5355c3 |
72 | |
c0cbf4d9 |
73 | (exists $SIGIL_MAP{$sigil}) |
74 | || confess "I do not recognize that sigil '$sigil'"; |
6d5355c3 |
75 | |
c0cbf4d9 |
76 | no strict 'refs'; |
77 | defined *{$self->name . '::' . $name}{$SIGIL_MAP{$sigil}} ? 1 : 0; |
6d5355c3 |
78 | |
c0cbf4d9 |
79 | } |
6d5355c3 |
80 | |
c0cbf4d9 |
81 | sub get_package_symbol { |
82 | my ($self, $variable) = @_; |
83 | (defined $variable) |
84 | || confess "You must pass a variable name"; |
6d5355c3 |
85 | |
c0cbf4d9 |
86 | my ($sigil, $name) = ($variable =~ /^(.)(.*)$/); |
6d5355c3 |
87 | |
c0cbf4d9 |
88 | (defined $sigil) |
89 | || confess "The variable name must include a sigil"; |
6d5355c3 |
90 | |
c0cbf4d9 |
91 | (exists $SIGIL_MAP{$sigil}) |
92 | || confess "I do not recognize that sigil '$sigil'"; |
6d5355c3 |
93 | |
c0cbf4d9 |
94 | no strict 'refs'; |
95 | return *{$self->name . '::' . $name}{$SIGIL_MAP{$sigil}}; |
6d5355c3 |
96 | |
c0cbf4d9 |
97 | } |
6d5355c3 |
98 | |
c0cbf4d9 |
99 | sub remove_package_symbol { |
100 | my ($self, $variable) = @_; |
6d5355c3 |
101 | |
c0cbf4d9 |
102 | (defined $variable) |
103 | || confess "You must pass a variable name"; |
6d5355c3 |
104 | |
c0cbf4d9 |
105 | my ($sigil, $name) = ($variable =~ /^(.)(.*)$/); |
106 | |
107 | (defined $sigil) |
108 | || confess "The variable name must include a sigil"; |
109 | |
110 | (exists $SIGIL_MAP{$sigil}) |
111 | || confess "I do not recognize that sigil '$sigil'"; |
112 | |
113 | no strict 'refs'; |
114 | if ($SIGIL_MAP{$sigil} eq 'SCALAR') { |
115 | undef ${$self->name . '::' . $name}; |
116 | } |
117 | elsif ($SIGIL_MAP{$sigil} eq 'ARRAY') { |
118 | undef @{$self->name . '::' . $name}; |
119 | } |
120 | elsif ($SIGIL_MAP{$sigil} eq 'HASH') { |
121 | undef %{$self->name . '::' . $name}; |
122 | } |
123 | elsif ($SIGIL_MAP{$sigil} eq 'CODE') { |
124 | undef &{$self->name . '::' . $name}; |
125 | } |
126 | else { |
127 | confess "This should never ever ever happen"; |
128 | } |
7f436b8c |
129 | } |
c0cbf4d9 |
130 | |
6d5355c3 |
131 | } |
132 | |
2243a22b |
133 | 1; |
134 | |
135 | __END__ |
136 | |
137 | =pod |
138 | |
139 | =head1 NAME |
140 | |
141 | Class::MOP::Package - Package Meta Object |
142 | |
143 | =head1 SYNOPSIS |
144 | |
145 | =head1 DESCRIPTION |
146 | |
147 | =head1 METHODS |
148 | |
149 | =over 4 |
150 | |
151 | =item B<meta> |
152 | |
6d5355c3 |
153 | =item B<initialize> |
154 | |
155 | =item B<name> |
156 | |
58d75218 |
157 | =item B<add_package_symbol> |
6d5355c3 |
158 | |
58d75218 |
159 | =item B<get_package_symbol> |
6d5355c3 |
160 | |
58d75218 |
161 | =item B<has_package_symbol> |
6d5355c3 |
162 | |
58d75218 |
163 | =item B<remove_package_symbol> |
6d5355c3 |
164 | |
2243a22b |
165 | =back |
166 | |
167 | =head1 AUTHOR |
168 | |
169 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
170 | |
171 | =head1 COPYRIGHT AND LICENSE |
172 | |
173 | Copyright 2006 by Infinity Interactive, Inc. |
174 | |
175 | L<http://www.iinteractive.com> |
176 | |
177 | This library is free software; you can redistribute it and/or modify |
178 | it under the same terms as Perl itself. |
179 | |
180 | =cut |