Commit | Line | Data |
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1 | |
2 | package Moose::Meta::Class; |
3 | |
4 | use strict; |
5 | use warnings; |
6 | |
6ba6d68c |
7 | use Carp 'confess'; |
8 | use Scalar::Util 'weaken'; |
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9 | |
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10 | our $VERSION = '0.03'; |
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11 | |
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12 | use base 'Class::MOP::Class'; |
13 | |
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14 | sub construct_instance { |
15 | my ($class, %params) = @_; |
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16 | my $instance = $params{'__INSTANCE__'} || {}; |
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17 | foreach my $attr ($class->compute_all_applicable_attributes()) { |
18 | my $init_arg = $attr->init_arg(); |
19 | # try to fetch the init arg from the %params ... |
20 | my $val; |
21 | $val = $params{$init_arg} if exists $params{$init_arg}; |
22 | # if nothing was in the %params, we can use the |
23 | # attribute's default value (if it has one) |
8339fae2 |
24 | if (!defined $val && $attr->has_default) { |
25 | $val = $attr->default($instance); |
26 | } |
00867c44 |
27 | if (defined $val) { |
00867c44 |
28 | if ($attr->has_type_constraint) { |
34a66aa3 |
29 | if ($attr->should_coerce && $attr->type_constraint->has_coercion) { |
a27aa600 |
30 | $val = $attr->type_constraint->coercion->coerce($val); |
7415b2cb |
31 | } |
a27aa600 |
32 | (defined($attr->type_constraint->check($val))) |
66811d63 |
33 | || confess "Attribute (" . $attr->name . ") does not pass the type contraint with '$val'"; |
00867c44 |
34 | } |
a15dff8d |
35 | } |
36 | $instance->{$attr->name} = $val; |
6ba6d68c |
37 | if (defined $val && $attr->is_weak_ref) { |
38 | weaken($instance->{$attr->name}); |
39 | } |
a15dff8d |
40 | } |
41 | return $instance; |
42 | } |
43 | |
c0e30cf5 |
44 | 1; |
45 | |
46 | __END__ |
47 | |
48 | =pod |
49 | |
50 | =head1 NAME |
51 | |
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52 | Moose::Meta::Class - The Moose metaclass |
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53 | |
c0e30cf5 |
54 | =head1 DESCRIPTION |
55 | |
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56 | This is a subclass of L<Class::MOP::Class> with Moose specific |
57 | extensions. |
58 | |
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59 | For the most part, the only time you will ever encounter an |
60 | instance of this class is if you are doing some serious deep |
61 | introspection. To really understand this class, you need to refer |
62 | to the L<Class::MOP::Class> documentation. |
63 | |
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64 | =head1 METHODS |
65 | |
66 | =over 4 |
67 | |
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68 | =item B<construct_instance> |
69 | |
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70 | This provides some Moose specific extensions to this method, you |
71 | almost never call this method directly unless you really know what |
72 | you are doing. |
73 | |
74 | This method makes sure to handle the moose weak-ref, type-constraint |
75 | and type coercion features. |
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76 | |
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77 | =back |
78 | |
79 | =head1 BUGS |
80 | |
81 | All complex software has bugs lurking in it, and this module is no |
82 | exception. If you find a bug please either email me, or add the bug |
83 | to cpan-RT. |
84 | |
c0e30cf5 |
85 | =head1 AUTHOR |
86 | |
87 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
88 | |
89 | =head1 COPYRIGHT AND LICENSE |
90 | |
91 | Copyright 2006 by Infinity Interactive, Inc. |
92 | |
93 | L<http://www.iinteractive.com> |
94 | |
95 | This library is free software; you can redistribute it and/or modify |
96 | it under the same terms as Perl itself. |
97 | |
98 | =cut |