From Code to Community: Sponsoring The Perl and Raku Conference 2025 Learn more

ETHER / Moose-2.2207 / lib / Moose / Meta / TypeCoercion / Union.pm 

            

              
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
—
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

              
package Moose::Meta::TypeCoercion::Union;
our $VERSION = '2.2207';
use strict;
use warnings;
use metaclass;
use Scalar::Util 'blessed';
use parent 'Moose::Meta::TypeCoercion';
use Moose::Util 'throw_exception';
sub compile_type_coercion {
    my $self            = shift;
    my $type_constraint = $self->type_constraint;
    (blessed $type_constraint && $type_constraint->isa('Moose::Meta::TypeConstraint::Union'))
     || throw_exception( NeedsTypeConstraintUnionForTypeCoercionUnion => type_coercion_union_object => $self,
                                                                         type_name                  => $type_constraint->name
                       );
    $self->_compiled_type_coercion(
        sub {
            my $value = shift;
            foreach my $type ( grep { $_->has_coercion }
                @{ $type_constraint->type_constraints } ) {
                my $temp = $type->coerce($value);
                return $temp if $type_constraint->check($temp);
            }
            return $value;
        }
    );
}
sub has_coercion_for_type { 0 }
sub add_type_coercions {
    my $self = shift;
    throw_exception( CannotAddAdditionalTypeCoercionsToUnion => type_coercion_union_object => $self );
}
1;
# ABSTRACT: The Moose Type Coercion metaclass for Unions
__END__
=pod
=encoding UTF-8
=head1 NAME
Moose::Meta::TypeCoercion::Union - The Moose Type Coercion metaclass for Unions
=head1 VERSION
version 2.2207
=head1 DESCRIPTION
This is a subclass of L<Moose::Meta::TypeCoercion> that is used for
L<Moose::Meta::TypeConstraint::Union> objects.
=head1 METHODS
=head2 $coercion->has_coercion_for_type
This method always returns false.
=head2 $coercion->add_type_coercions
This method always throws an error. You cannot add coercions to a
union type coercion.
=head2 $coercion->coerce($value)
This method will coerce by trying the coercions for each type in the
union.
=head1 BUGS
See L<Moose/BUGS> for details on reporting bugs.
=head1 AUTHORS
=over 4
=item *
Stevan Little <stevan@cpan.org>
=item *
Dave Rolsky <autarch@urth.org>
=item *
Jesse Luehrs <doy@cpan.org>
=item *
Shawn M Moore <sartak@cpan.org>
=item *
יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
=item *
Karen Etheridge <ether@cpan.org>
=item *
Florian Ragwitz <rafl@debian.org>
=item *
Hans Dieter Pearcey <hdp@cpan.org>
=item *
Chris Prather <chris@prather.org>
=item *
Matt S Trout <mstrout@cpan.org>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2006 by Infinity Interactive, Inc.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut