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1 | #!/usr/bin/env perl |
2 | package MooseX::Role::Parameterized::Meta::Role; |
3 | use Moose; |
4 | extends 'Moose::Meta::Role'; |
5 | |
6 | use MooseX::Role::Parameterized::Parameters; |
7 | |
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8 | has parameter_metaclass => ( |
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9 | is => 'rw', |
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10 | isa => 'Moose::Meta::Class', |
11 | lazy => 1, |
12 | default => sub { |
13 | Moose::Meta::Class->create_anon_class( |
14 | superclasses => ['MooseX::Role::Parameterized::Parameters'], |
15 | ); |
16 | }, |
17 | ); |
18 | |
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19 | has role_generator => ( |
20 | is => 'rw', |
21 | isa => 'CodeRef', |
22 | predicate => 'has_role_generator', |
23 | ); |
24 | |
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25 | sub add_parameter { |
26 | my $self = shift; |
27 | $self->parameter_metaclass->add_attribute(@_); |
28 | } |
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29 | |
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30 | sub construct_parameters { |
31 | my $self = shift; |
32 | $self->parameter_metaclass->construct_instance(@_); |
33 | } |
34 | |
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35 | sub generate_role { |
36 | my $self = shift; |
37 | my %args = @_; |
38 | |
39 | confess "A role generator is required to generate roles" |
40 | unless $self->has_role_generator; |
41 | |
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42 | my $metaclass = Moose::Meta::Class->create_anon_class( |
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43 | superclasses => ['Moose::Meta::Role'], |
44 | ); |
45 | |
46 | my $parameters = $self->construct_parameters(%args); |
47 | |
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48 | local $MooseX::Role::Parameterized::CURRENT_METACLASS = $metaclass; |
49 | $self->role_generator->($parameters, |
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50 | operating_on => $metaclass, |
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51 | ); |
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52 | |
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53 | my $role = $metaclass->construct_instance; |
54 | return $role; |
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55 | } |
56 | |
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57 | __PACKAGE__->meta->make_immutable; |
58 | no Moose; |
59 | |
60 | 1; |
61 | |