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1 | |
2 | package Moose; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
7 | our $VERSION = '0.01'; |
8 | |
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9 | use Scalar::Util 'blessed', 'reftype'; |
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10 | use Carp 'confess'; |
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11 | use Sub::Name 'subname'; |
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12 | |
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13 | use Moose::Meta::Class; |
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14 | use Moose::Meta::SafeMixin; |
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15 | use Moose::Meta::Attribute; |
16 | |
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17 | use Moose::Object; |
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18 | use Moose::Util::TypeConstraints ':no_export'; |
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19 | |
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20 | # bootstrap the mixin module |
21 | Moose::Meta::SafeMixin::mixin(Moose::Meta::Class->meta, 'Moose::Meta::SafeMixin'); |
22 | |
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23 | sub import { |
24 | shift; |
25 | my $pkg = caller(); |
26 | |
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27 | Moose::Util::TypeConstraints->import($pkg); |
28 | |
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29 | my $meta; |
30 | if ($pkg->can('meta')) { |
31 | $meta = $pkg->meta(); |
32 | (blessed($meta) && $meta->isa('Class::MOP::Class')) |
33 | || confess "Whoops, not møøsey enough"; |
34 | } |
35 | else { |
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36 | $meta = Moose::Meta::Class->initialize($pkg => ( |
37 | ':attribute_metaclass' => 'Moose::Meta::Attribute' |
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38 | )); |
39 | $meta->add_method('meta' => sub { |
40 | # re-initialize so it inherits properly |
41 | Moose::Meta::Class->initialize($pkg => ( |
42 | ':attribute_metaclass' => 'Moose::Meta::Attribute' |
43 | )); |
44 | }) |
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45 | } |
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46 | |
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47 | # NOTE: |
48 | # &alias_method will install the method, but it |
49 | # will not name it with |
50 | |
51 | # handle superclasses |
52 | $meta->alias_method('extends' => subname 'Moose::extends' => sub { $meta->superclasses(@_) }); |
53 | |
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54 | # handle mixins |
55 | $meta->alias_method('with' => subname 'Moose::with' => sub { $meta->mixin($_[0]) }); |
56 | |
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57 | # handle attributes |
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58 | $meta->alias_method('has' => subname 'Moose::has' => sub { |
59 | my ($name, %options) = @_; |
60 | if (exists $options{is}) { |
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61 | if ($options{is} eq 'ro') { |
62 | $options{reader} = $name; |
63 | } |
64 | elsif ($options{is} eq 'rw') { |
65 | $options{accessor} = $name; |
66 | } |
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67 | } |
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68 | if (exists $options{isa}) { |
69 | if (reftype($options{isa}) && reftype($options{isa}) eq 'CODE') { |
70 | $options{type_constraint} = $options{isa}; |
71 | } |
72 | else { |
73 | $options{type_constraint} = Moose::Util::TypeConstraints::subtype( |
74 | Object => Moose::Util::TypeConstraints::where { $_->isa($options{isa}) } |
75 | ); |
76 | } |
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77 | } |
78 | $meta->add_attribute($name, %options) |
79 | }); |
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80 | |
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81 | # handle method modifers |
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82 | $meta->alias_method('before' => subname 'Moose::before' => sub { |
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83 | my $code = pop @_; |
84 | $meta->add_before_method_modifier($_, $code) for @_; |
85 | }); |
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86 | $meta->alias_method('after' => subname 'Moose::after' => sub { |
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87 | my $code = pop @_; |
88 | $meta->add_after_method_modifier($_, $code) for @_; |
89 | }); |
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90 | $meta->alias_method('around' => subname 'Moose::around' => sub { |
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91 | my $code = pop @_; |
92 | $meta->add_around_method_modifier($_, $code) for @_; |
93 | }); |
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94 | |
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95 | # make sure they inherit from Moose::Object |
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96 | $meta->superclasses('Moose::Object') |
97 | unless $meta->superclasses(); |
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98 | |
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99 | # we recommend using these things |
100 | # so export them for them |
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101 | $meta->alias_method('confess' => \&confess); |
102 | $meta->alias_method('blessed' => \&blessed); |
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103 | } |
104 | |
105 | 1; |
106 | |
107 | __END__ |
108 | |
109 | =pod |
110 | |
111 | =head1 NAME |
112 | |
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113 | Moose - Moose, it's the new Camel |
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114 | |
115 | =head1 SYNOPSIS |
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116 | |
117 | package Point; |
118 | use Moose; |
119 | |
120 | has 'x' => (isa => Int(), is => 'rw'); |
121 | has 'y' => (isa => Int(), is => 'rw'); |
122 | |
123 | sub clear { |
124 | my $self = shift; |
125 | $self->x(0); |
126 | $self->y(0); |
127 | } |
128 | |
129 | package Point3D; |
130 | use Moose; |
131 | |
132 | extends 'Point'; |
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133 | |
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134 | has 'z' => (isa => Int()); |
135 | |
136 | after 'clear' => sub { |
137 | my $self = shift; |
138 | $self->{z} = 0; |
139 | }; |
140 | |
141 | =head1 CAVEAT |
142 | |
143 | This is a B<very> early release of this module, it still needs |
144 | some fine tuning and B<lots> more documentation. I am adopting |
145 | the I<release early and release often> approach with this module, |
146 | so keep an eye on your favorite CPAN mirror! |
147 | |
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148 | =head1 DESCRIPTION |
149 | |
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150 | Moose is an extension of the Perl 5 object system. |
151 | |
152 | =head2 Another object system!?!? |
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153 | |
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154 | Yes, I know there has been an explosion recently of new ways to |
155 | build object's in Perl 5, most of them based on inside-out objects, |
156 | and other such things. Moose is different because it is not a new |
157 | object system for Perl 5, but instead an extension of the existing |
158 | object system. |
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159 | |
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160 | Moose is built on top of L<Class::MOP>, which is a metaclass system |
161 | for Perl 5. This means that Moose not only makes building normal |
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162 | Perl 5 objects better, but it also provides the power of metaclass |
163 | programming. |
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164 | |
165 | =head2 What does Moose stand for?? |
166 | |
167 | Moose doesn't stand for one thing in particular, however, if you |
168 | want, here are a few of my favorites, feel free to contribute |
169 | more :) |
170 | |
171 | =over 4 |
172 | |
173 | =item Makes Other Object Systems Envious |
174 | |
175 | =item Makes Object Orientation So Easy |
176 | |
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177 | =item Makes Object Orientation Sound Easy |
178 | |
179 | =item Makes Object Orientation Spiffy- Er |
180 | |
181 | =item My Overcraft Overfilled (with) Some Eels |
182 | |
183 | =item Moose Often Ovulate Sorta Early |
184 | |
185 | =item Most Other Object Systems Emasculate |
186 | |
187 | =item Many Overloaded Object Systems Exists |
188 | |
189 | =item Moose Offers Often Super Extensions |
190 | |
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191 | =back |
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192 | |
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193 | =head1 BUGS |
194 | |
195 | All complex software has bugs lurking in it, and this module is no |
196 | exception. If you find a bug please either email me, or add the bug |
197 | to cpan-RT. |
198 | |
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199 | =head1 AUTHOR |
200 | |
201 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
202 | |
203 | =head1 COPYRIGHT AND LICENSE |
204 | |
205 | Copyright 2006 by Infinity Interactive, Inc. |
206 | |
207 | L<http://www.iinteractive.com> |
208 | |
209 | This library is free software; you can redistribute it and/or modify |
210 | it under the same terms as Perl itself. |
211 | |
212 | =cut |