bump version to 0.26

[gitmo/MooseX-Types.git] / lib / MooseX / Types / TypeDecorator.pm

diff --git a/lib/MooseX/Types/TypeDecorator.pm b/lib/MooseX/Types/TypeDecorator.pm
index ebe0f5d..b95f124 100644 (file)
--- a/lib/MooseX/Types/TypeDecorator.pm
+++ b/lib/MooseX/Types/TypeDecorator.pm
@@ -1,4 +1,5 @@
 package MooseX::Types::TypeDecorator;
+our $VERSION = "0.26";
 
 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 $self) {
@@ -18,13 +24,27 @@ use overload(
                        return "$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 = grep {blessed $_} @_;
+
+        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);
     },
@@ -63,16 +83,16 @@ 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.");        
     }
 }
 
-=head __type_constraint ($type_constraint)
+=head2 __type_constraint ($type_constraint)
 
 Set/Get the type_constraint.
 
@@ -86,7 +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');
     }
 }
 
@@ -109,6 +129,7 @@ sub isa {
     }
 }
 
+
 =head2 can
 
 handle $self->can since AUTOLOAD can't.
@@ -141,6 +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
 
@@ -168,19 +201,18 @@ sub AUTOLOAD {
     ## MooseX::Types::UndefinedType which AUTOLOADs during autovivication.
     
     my $return;
-    
     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