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1 | |
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2 | use lib '/Users/stevan/Projects/CPAN/Class-MOP/Class-MOP/lib'; |
3 | |
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4 | package Moose; |
5 | |
6 | use strict; |
7 | use warnings; |
8 | |
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9 | our $VERSION = '0.02'; |
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10 | |
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11 | use Scalar::Util 'blessed', 'reftype'; |
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12 | use Carp 'confess'; |
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13 | use Sub::Name 'subname'; |
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14 | |
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15 | use UNIVERSAL::require; |
16 | |
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17 | use Class::MOP; |
18 | |
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19 | use Moose::Meta::Class; |
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20 | use Moose::Meta::SafeMixin; |
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21 | use Moose::Meta::Attribute; |
22 | |
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23 | use Moose::Object; |
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24 | use Moose::Util::TypeConstraints ':no_export'; |
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25 | |
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26 | # bootstrap the mixin module |
27 | Moose::Meta::SafeMixin::mixin(Moose::Meta::Class->meta, 'Moose::Meta::SafeMixin'); |
28 | |
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29 | sub import { |
30 | shift; |
31 | my $pkg = caller(); |
32 | |
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33 | # we should never export to main |
34 | return if $pkg eq 'main'; |
35 | |
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36 | Moose::Util::TypeConstraints->import($pkg); |
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37 | |
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38 | my $meta; |
39 | if ($pkg->can('meta')) { |
40 | $meta = $pkg->meta(); |
41 | (blessed($meta) && $meta->isa('Class::MOP::Class')) |
42 | || confess "Whoops, not møøsey enough"; |
43 | } |
44 | else { |
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45 | $meta = Moose::Meta::Class->initialize($pkg => ( |
46 | ':attribute_metaclass' => 'Moose::Meta::Attribute' |
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47 | )); |
48 | $meta->add_method('meta' => sub { |
49 | # re-initialize so it inherits properly |
50 | Moose::Meta::Class->initialize($pkg => ( |
51 | ':attribute_metaclass' => 'Moose::Meta::Attribute' |
52 | )); |
53 | }) |
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54 | } |
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55 | |
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56 | # NOTE: |
57 | # &alias_method will install the method, but it |
58 | # will not name it with |
59 | |
60 | # handle superclasses |
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61 | $meta->alias_method('extends' => subname 'Moose::extends' => sub { |
62 | $_->require for @_; |
63 | $meta->superclasses(@_) |
64 | }); |
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65 | |
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66 | # handle mixins |
67 | $meta->alias_method('with' => subname 'Moose::with' => sub { $meta->mixin($_[0]) }); |
68 | |
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69 | # handle attributes |
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70 | $meta->alias_method('has' => subname 'Moose::has' => sub { |
71 | my ($name, %options) = @_; |
72 | if (exists $options{is}) { |
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73 | if ($options{is} eq 'ro') { |
74 | $options{reader} = $name; |
75 | } |
76 | elsif ($options{is} eq 'rw') { |
77 | $options{accessor} = $name; |
78 | } |
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79 | } |
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80 | if (exists $options{isa}) { |
81 | if (reftype($options{isa}) && reftype($options{isa}) eq 'CODE') { |
82 | $options{type_constraint} = $options{isa}; |
83 | } |
84 | else { |
85 | $options{type_constraint} = Moose::Util::TypeConstraints::subtype( |
86 | Object => Moose::Util::TypeConstraints::where { $_->isa($options{isa}) } |
87 | ); |
88 | } |
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89 | } |
90 | $meta->add_attribute($name, %options) |
91 | }); |
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92 | |
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93 | # handle method modifers |
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94 | $meta->alias_method('before' => subname 'Moose::before' => sub { |
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95 | my $code = pop @_; |
96 | $meta->add_before_method_modifier($_, $code) for @_; |
97 | }); |
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98 | $meta->alias_method('after' => subname 'Moose::after' => sub { |
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99 | my $code = pop @_; |
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100 | $meta->add_after_method_modifier($_, $code) for @_; |
e5ebe4ce |
101 | }); |
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102 | $meta->alias_method('around' => subname 'Moose::around' => sub { |
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103 | my $code = pop @_; |
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104 | $meta->add_around_method_modifier($_, $code) for @_; |
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105 | }); |
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106 | |
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107 | # make sure they inherit from Moose::Object |
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108 | $meta->superclasses('Moose::Object') |
109 | unless $meta->superclasses(); |
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110 | |
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111 | # we recommend using these things |
112 | # so export them for them |
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113 | $meta->alias_method('confess' => \&Carp::confess); |
114 | $meta->alias_method('blessed' => \&Scalar::Util::blessed); |
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115 | } |
116 | |
117 | 1; |
118 | |
119 | __END__ |
120 | |
121 | =pod |
122 | |
123 | =head1 NAME |
124 | |
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125 | Moose - Moose, it's the new Camel |
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126 | |
127 | =head1 SYNOPSIS |
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128 | |
129 | package Point; |
130 | use Moose; |
131 | |
132 | has 'x' => (isa => Int(), is => 'rw'); |
133 | has 'y' => (isa => Int(), is => 'rw'); |
134 | |
135 | sub clear { |
136 | my $self = shift; |
137 | $self->x(0); |
138 | $self->y(0); |
139 | } |
140 | |
141 | package Point3D; |
142 | use Moose; |
143 | |
144 | extends 'Point'; |
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145 | |
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146 | has 'z' => (isa => Int()); |
147 | |
148 | after 'clear' => sub { |
149 | my $self = shift; |
150 | $self->{z} = 0; |
151 | }; |
152 | |
153 | =head1 CAVEAT |
154 | |
155 | This is a B<very> early release of this module, it still needs |
156 | some fine tuning and B<lots> more documentation. I am adopting |
157 | the I<release early and release often> approach with this module, |
158 | so keep an eye on your favorite CPAN mirror! |
159 | |
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160 | =head1 DESCRIPTION |
161 | |
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162 | Moose is an extension of the Perl 5 object system. |
163 | |
164 | =head2 Another object system!?!? |
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165 | |
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166 | Yes, I know there has been an explosion recently of new ways to |
167 | build object's in Perl 5, most of them based on inside-out objects, |
168 | and other such things. Moose is different because it is not a new |
169 | object system for Perl 5, but instead an extension of the existing |
170 | object system. |
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171 | |
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172 | Moose is built on top of L<Class::MOP>, which is a metaclass system |
173 | for Perl 5. This means that Moose not only makes building normal |
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174 | Perl 5 objects better, but it also provides the power of metaclass |
175 | programming. |
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176 | |
177 | =head2 What does Moose stand for?? |
178 | |
179 | Moose doesn't stand for one thing in particular, however, if you |
180 | want, here are a few of my favorites, feel free to contribute |
181 | more :) |
182 | |
183 | =over 4 |
184 | |
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185 | =item Make Other Object Systems Envious |
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186 | |
187 | =item Makes Object Orientation So Easy |
188 | |
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189 | =item Makes Object Orientation Spiffy- Er (sorry ingy) |
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190 | |
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191 | =item Most Other Object Systems Emasculate |
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192 | |
193 | =item My Overcraft Overfilled (with) Some Eels |
194 | |
195 | =item Moose Often Ovulate Sorta Early |
196 | |
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197 | =item Many Overloaded Object Systems Exists |
198 | |
199 | =item Moose Offers Often Super Extensions |
200 | |
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201 | =back |
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202 | |
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203 | =head1 ACKNOWLEDGEMENTS |
204 | |
205 | =over 4 |
206 | |
207 | =item I blame Sam Vilain for giving me my first hit of meta-model crack. |
208 | |
209 | =item I blame Audrey Tang for encouraging that meta-crack habit in #perl6. |
210 | |
211 | =item Without the love and encouragement of Yuval "nothingmuch" Kogman, |
212 | this module would not be possible (and it wouldn't have a name). |
213 | |
214 | =item The basis of the TypeContraints module was Rob Kinyon's idea |
215 | originally, I just ran with it. |
216 | |
217 | =back |
218 | |
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219 | =head1 BUGS |
220 | |
221 | All complex software has bugs lurking in it, and this module is no |
222 | exception. If you find a bug please either email me, or add the bug |
223 | to cpan-RT. |
224 | |
fcd84ca9 |
225 | =head1 AUTHOR |
226 | |
227 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
228 | |
229 | =head1 COPYRIGHT AND LICENSE |
230 | |
231 | Copyright 2006 by Infinity Interactive, Inc. |
232 | |
233 | L<http://www.iinteractive.com> |
234 | |
235 | This library is free software; you can redistribute it and/or modify |
236 | it under the same terms as Perl itself. |
237 | |
238 | =cut |