X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMoose%2FMeta%2FTypeCoercion%2FUnion.pm;h=6e6f7da4473e0d35ab99d53f24eb730b0f6da72b;hb=0031c50c1ba39e702417ee2bc1cb6a00b7af2cfa;hp=429186de0289511acb9da8c705b8e459129ab52d;hpb=a7be0f8593e4e7b7f570f49027ee4f8f25d4d8bc;p=gitmo%2FMoose.git

diff --git a/lib/Moose/Meta/TypeCoercion/Union.pm b/lib/Moose/Meta/TypeCoercion/Union.pm
index 429186d..6e6f7da 100644
--- a/lib/Moose/Meta/TypeCoercion/Union.pm
+++ b/lib/Moose/Meta/TypeCoercion/Union.pm
@@ -7,97 +7,72 @@ use metaclass;
 
 use Scalar::Util 'blessed';
 
-our $VERSION   = '0.69';
-$VERSION = eval $VERSION;
-our $AUTHORITY = 'cpan:STEVAN';
-
 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 a Moose::Meta::TypeCoercion::Union for a " .
+     || 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;
-        # go through all the type constraints 
-        # in the union, and check em ...
-        foreach my $type (@{$type_constraint->type_constraints}) {
-            # if they have a coercion first
-            if ($type->has_coercion) {    
-                # then try to coerce them ...
+
+    $self->_compiled_type_coercion(
+        sub {
+            my $value = shift;
+
+            foreach my $type ( grep { $_->has_coercion }
+                @{ $type_constraint->type_constraints } ) {
                 my $temp = $type->coerce($value);
-                # and if they get something 
-                # make sure it still fits within
-                # the union type ...
                 return $temp if $type_constraint->check($temp);
             }
+
+            return $value;
         }
-        return undef;    
-    });
+    );
 }
 
 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
+
 __END__
 
 =pod
 
-=head1 NAME
-
-Moose::Meta::TypeCoercion::Union - The Moose Type Coercion metaclass for Unions
-
 =head1 DESCRIPTION
 
-For the most part, the only time you will ever encounter an 
-instance of this class is if you are doing some serious deep 
-introspection. This API should not be considered final, but 
-it is B<highly unlikely> that this will matter to a regular 
-Moose user.
-
-If you wish to use features at this depth, please come to the 
-#moose IRC channel on irc.perl.org and we can talk :)
-
+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<meta>
-
-=item B<compile_type_coercion>
+=item B<< $coercion->has_coercion_for_type >>
 
-=item B<has_coercion_for_type>
+This method always returns false.
 
-=item B<add_type_coercions>
+=item B<< $coercion->add_type_coercions >>
 
-=back
-
-=head1 BUGS
+This method always throws an error. You cannot add coercions to a
+union type coercion.
 
-All complex software has bugs lurking in it, and this module is no 
-exception. If you find a bug please either email me, or add the bug
-to cpan-RT.
+=item B<< $coercion->coerce($value) >>
 
-=head1 AUTHOR
+This method will coerce by trying the coercions for each type in the
+union.
 
-Stevan Little E<lt>stevan@iinteractive.comE<gt>
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2006-2009 by Infinity Interactive, Inc.
+=back
 
-L<http://www.iinteractive.com>
+=head1 BUGS
 
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself. 
+See L<Moose/BUGS> for details on reporting bugs.
 
 =cut