X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMooseX%2FTypes%2FTypeDecorator.pm;h=de5660244952e8c328d5b3c0db50f5fad7905740;hb=6d7f2c07382702d3807060253671ac8572c7e33e;hp=12c7f4803b3bacd785f2913b07d38b3d41203974;hpb=442e42ba3e90b69452a0c8c2a78cd55d2304262a;p=gitmo%2FMooseX-Types.git

diff --git a/lib/MooseX/Types/TypeDecorator.pm b/lib/MooseX/Types/TypeDecorator.pm
index 12c7f48..de56602 100644
--- a/lib/MooseX/Types/TypeDecorator.pm
+++ b/lib/MooseX/Types/TypeDecorator.pm
@@ -1,4 +1,5 @@
 package MooseX::Types::TypeDecorator;
+our $VERSION = "0.22";
 
 use strict;
 use warnings;
@@ -10,6 +11,11 @@ use Moose::Meta::TypeConstraint::Union;
 use Scalar::Util qw(blessed);
 
 use overload(
+    '0+' => sub {
+            my $self = shift @_;
+            my $tc = $self->{__type_constraint};
+            return 0+$tc;
+     },
     '""' => sub {
     		my $self = shift @_;
     		if(blessed $self) {
@@ -18,16 +24,26 @@ use overload(
     			return "$self";
     		}
     },
+    bool => sub { 1 },
     '|' => sub {
         
         ## It's kind of ugly that we need to know about Union Types, but this
         ## is needed for syntax compatibility.  Maybe someday we'll all just do
         ## Or[Str,Str,Int]
 
-	my @tc = map {
-	    blessed $_ ? $_ :
-	      Moose::Util::TypeConstraints::find_or_parse_type_constraint($_)
-	} @_;
+        my @args = @_[0,1]; ## arg 3 is special,  see the overload docs.
+        my @tc = grep {blessed $_} map {
+            blessed $_ ? $_ :
+            Moose::Util::TypeConstraints::find_or_parse_type_constraint($_)
+              || __PACKAGE__->_throw_error( "$_ is not a type constraint")
+        } @args;
+
+        ( scalar @tc == scalar @args)
+            || __PACKAGE__->_throw_error(
+			  "one of your type constraints is bad.  Passed: ". join(', ', @args) ." Got: ". join(', ', @tc));
+
+        ( scalar @tc >= 2 )
+            || __PACKAGE__->_throw_error("You must pass in at least 2 type names to make a union");
 
         my $union = Moose::Meta::TypeConstraint::Union->new(type_constraints=>\@tc);
         return Moose::Util::TypeConstraints::register_type_constraint($union);
@@ -67,12 +83,12 @@ sub new {
             ## stub in case we'll need to handle these types differently
             return bless {'__type_constraint'=>$arg}, $class;
         } elsif(blessed $arg) {
-            croak "Argument must be ->isa('Moose::Meta::TypeConstraint') or ->isa('MooseX::Types::UndefinedType'), not ". blessed $arg;
+            __PACKAGE__->_throw_error("Argument must be ->isa('Moose::Meta::TypeConstraint') or ->isa('MooseX::Types::UndefinedType'), not ". blessed $arg);
         } else {
-            croak "Argument cannot be '$arg'";
+            __PACKAGE__->_throw_error("Argument cannot be '$arg'");
         }
     } else {
-        croak "This method [new] requires a single argument.";        
+        __PACKAGE__->_throw_error("This method [new] requires a single argument.");        
     }
 }
 
@@ -90,7 +106,7 @@ sub __type_constraint {
         }
         return $self->{__type_constraint};        
     } else {
-        croak 'cannot call __type_constraint as a class method';
+        __PACKAGE__->_throw_error('cannot call __type_constraint as a class method');
     }
 }
 
@@ -113,6 +129,7 @@ sub isa {
     }
 }
 
+
 =head2 can
 
 handle $self->can since AUTOLOAD can't.
@@ -145,6 +162,18 @@ sub meta {
 	} 
 }
 
+=head2 _throw_error
+
+properly delegate error messages
+
+=cut
+
+sub _throw_error {
+    shift;
+    require Moose;
+    unshift @_, 'Moose';
+    goto &Moose::throw_error;
+}
 
 =head2 DESTROY
 
@@ -176,15 +205,15 @@ sub AUTOLOAD {
     eval {
         $return = $self->__type_constraint->$method(@args);
     }; if($@) {
-        croak $@;
+        __PACKAGE__->_throw_error($@);
     } else {
         return $return;
     }
 }
 
-=head1 AUTHOR AND COPYRIGHT
+=head1 AUTHOR
 
-John Napiorkowski (jnapiorkowski) <jjnapiork@cpan.org>
+See L<MooseX::Types/AUTHOR>.
 
 =head1 LICENSE