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package Moose::Meta::TypeCoercion::Union;
BEGIN {
$Moose::Meta::TypeCoercion::Union::AUTHORITY = 'cpan:STEVAN';
}
{
$Moose::Meta::TypeCoercion::Union::VERSION = '2.0603';
}
use strict;
use warnings;
use metaclass;
use Scalar::Util 'blessed';
use base 'Moose::Meta::TypeCoercion';
sub compile_type_coercion {
my $self = shift;
my $type_constraint = $self->type_constraint;
(blessed $type_constraint && $type_constraint->isa('Moose::Meta::TypeConstraint::Union'))
|| Moose->throw_error("You can only create a Moose::Meta::TypeCoercion::Union for a " .
"Moose::Meta::TypeConstraint::Union, not a $type_constraint");
$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 {
require Moose;
Moose->throw_error("Cannot add additional type coercions to Union types");
}
1;
# ABSTRACT: The Moose Type Coercion metaclass for Unions
=pod
=head1 NAME
Moose::Meta::TypeCoercion::Union - The Moose Type Coercion metaclass for Unions
=head1 VERSION
version 2.0603
=head1 DESCRIPTION
This is a subclass of L<Moose::Meta::TypeCoercion> that is used for
L<Moose::Meta::TypeConstraint::Union> objects.
=head1 METHODS
=over 4
=item B<< $coercion->has_coercion_for_type >>
This method always returns false.
=item B<< $coercion->add_type_coercions >>
This method always throws an error. You cannot add coercions to a
union type coercion.
=item B<< $coercion->coerce($value) >>
This method will coerce by trying the coercions for each type in the
union.
=back
=head1 BUGS
See L<Moose/BUGS> for details on reporting bugs.
=head1 AUTHOR
Moose is maintained by the Moose Cabal, along with the help of many contributors. See L<Moose/CABAL> and L<Moose/CONTRIBUTORS> for details.
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2012 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
__END__
|
