Commit | Line | Data |
d245e471 |
1 | package Moo::Role; |
2 | |
3 | use strictures 1; |
4 | use Moo::_Utils; |
5 | use base qw(Role::Tiny); |
6 | |
7 | BEGIN { *INFO = \%Role::Tiny::INFO } |
8 | |
9 | our %INFO; |
10 | |
11 | sub import { |
12 | my $target = caller; |
13 | strictures->import; |
1ba11455 |
14 | return if $INFO{$target}; # already exported into this package |
d245e471 |
15 | # get symbol table reference |
16 | my $stash = do { no strict 'refs'; \%{"${target}::"} }; |
17 | *{_getglob "${target}::has"} = sub { |
18 | my ($name, %spec) = @_; |
19 | ($INFO{$target}{accessor_maker} ||= do { |
faa9ce11 |
20 | require Method::Generate::Accessor; |
d245e471 |
21 | Method::Generate::Accessor->new |
22 | })->generate_method($target, $name, \%spec); |
23 | $INFO{$target}{attributes}{$name} = \%spec; |
24 | }; |
7f9775b1 |
25 | if ($INC{'Moo/HandleMoose.pm'}) { |
26 | Moo::HandleMoose::inject_fake_metaclass_for($target); |
27 | } |
d245e471 |
28 | goto &Role::Tiny::import; |
29 | } |
30 | |
31 | sub apply_role_to_package { |
369a4c50 |
32 | my ($me, $to, $role) = @_; |
33 | $me->SUPER::apply_role_to_package($to, $role); |
d245e471 |
34 | $me->_handle_constructor($to, $INFO{$role}{attributes}); |
35 | } |
36 | |
37 | sub create_class_with_roles { |
38 | my ($me, $superclass, @roles) = @_; |
39 | |
c69190f1 |
40 | my $new_name = join( |
41 | '__WITH__', $superclass, my $compose_name = join '__AND__', @roles |
42 | ); |
43 | |
d245e471 |
44 | return $new_name if $Role::Tiny::COMPOSED{class}{$new_name}; |
45 | |
faa9ce11 |
46 | require Sub::Quote; |
d245e471 |
47 | |
48 | $me->SUPER::create_class_with_roles($superclass, @roles); |
49 | |
50 | foreach my $role (@roles) { |
51 | die "${role} is not a Role::Tiny" unless my $info = $INFO{$role}; |
52 | } |
53 | |
c69190f1 |
54 | $Moo::MAKERS{$new_name} = {}; |
55 | |
d245e471 |
56 | $me->_handle_constructor( |
c4570291 |
57 | $new_name, { map %{$INFO{$_}{attributes}||{}}, @roles }, $superclass |
d245e471 |
58 | ); |
59 | |
60 | return $new_name; |
61 | } |
62 | |
dccea57d |
63 | sub _install_single_modifier { |
64 | my ($me, @args) = @_; |
65 | _install_modifier(@args); |
d245e471 |
66 | } |
67 | |
68 | sub _handle_constructor { |
c4570291 |
69 | my ($me, $to, $attr_info, $superclass) = @_; |
d245e471 |
70 | return unless $attr_info && keys %$attr_info; |
71 | if ($INFO{$to}) { |
72 | @{$INFO{$to}{attributes}||={}}{keys %$attr_info} = values %$attr_info; |
73 | } else { |
74 | # only fiddle with the constructor if the target is a Moo class |
75 | if ($INC{"Moo.pm"} |
c4570291 |
76 | and my $con = Moo->_constructor_maker_for($to, $superclass)) { |
d245e471 |
77 | $con->register_attribute_specs(%$attr_info); |
78 | } |
79 | } |
80 | } |
81 | |
82 | 1; |
bce933ec |
83 | |
0b6e5fff |
84 | =head1 NAME |
85 | |
86 | Moo::Role - Minimal Object Orientation support for Roles |
bce933ec |
87 | |
88 | =head1 SYNOPSIS |
89 | |
90 | package My::Role; |
91 | |
92 | use Moo::Role; |
93 | |
94 | sub foo { ... } |
95 | |
96 | sub bar { ... } |
97 | |
98 | has baz => ( |
99 | is => 'ro', |
100 | ); |
101 | |
102 | 1; |
103 | |
104 | else where |
105 | |
106 | package Some::Class; |
107 | |
108 | use Moo; |
109 | |
110 | # bar gets imported, but not foo |
111 | with('My::Role'); |
112 | |
113 | sub foo { ... } |
114 | |
115 | 1; |
116 | |
117 | =head1 DESCRIPTION |
118 | |
119 | C<Moo::Role> builds upon L<Role::Tiny>, so look there for most of the |
120 | documentation on how this works. The main addition here is extra bits to make |
121 | the roles more "Moosey;" which is to say, it adds L</has>. |
122 | |
123 | =head1 IMPORTED SUBROUTINES |
124 | |
125 | See L<Role::Tiny/IMPORTED SUBROUTINES> for all the other subroutines that are |
126 | imported by this module. |
127 | |
128 | =head2 has |
129 | |
130 | has attr => ( |
131 | is => 'ro', |
132 | ); |
133 | |
134 | Declares an attribute for the class to be composed into. See |
135 | L<Moo/has> for all options. |
40f3e3aa |
136 | |
137 | =head1 AUTHORS |
138 | |
139 | See L<Moo> for authors. |
140 | |
141 | =head1 COPYRIGHT AND LICENSE |
142 | |
143 | See L<Moo> for the copyright and license. |
144 | |
145 | =cut |