make M:M:TC:Parameterized->equals("Unregistered") work

[gitmo/Moose.git] / lib / Moose / Meta / TypeConstraint / Parameterized.pm

diff --git a/lib/Moose/Meta/TypeConstraint/Parameterized.pm b/lib/Moose/Meta/TypeConstraint/Parameterized.pm
index 7ece248..65bf696 100644 (file)
--- a/lib/Moose/Meta/TypeConstraint/Parameterized.pm
+++ b/lib/Moose/Meta/TypeConstraint/Parameterized.pm
@@ -5,27 +5,30 @@ use warnings;
 use metaclass;
 
 use Scalar::Util 'blessed';
-use Carp         'confess';
 use Moose::Util::TypeConstraints;
-
-our $VERSION   = '0.57';
-$VERSION = eval $VERSION;
-our $AUTHORITY = 'cpan:STEVAN';
+use Moose::Meta::TypeConstraint::Parameterizable;
 
 use base 'Moose::Meta::TypeConstraint';
 
 __PACKAGE__->meta->add_attribute('type_parameter' => (
     accessor  => 'type_parameter',
     predicate => 'has_type_parameter',
+    Class::MOP::_definition_context(),
+));
+
+__PACKAGE__->meta->add_attribute('parameterized_from' => (
+    accessor   => 'parameterized_from',
+    predicate  => 'has_parameterized_from',
+    Class::MOP::_definition_context(),
 ));
 
 sub equals {
     my ( $self, $type_or_name ) = @_;
 
-    my $other = Moose::Util::TypeConstraints::find_type_constraint($type_or_name);
+    my $other = Moose::Util::TypeConstraints::find_or_create_type_constraint($type_or_name) or return;
 
     return unless $other->isa(__PACKAGE__);
-    
+
     return (
         $self->type_parameter->equals( $other->type_parameter )
             and
@@ -35,72 +38,89 @@ sub equals {
 
 sub compile_type_constraint {
     my $self = shift;
-    
-    ($self->has_type_parameter)
-        || confess "You cannot create a Higher Order type without a type parameter";
-        
+
+    unless ( $self->has_type_parameter ) {
+        require Moose;
+        Moose->throw_error("You cannot create a Higher Order type without a type parameter");
+    }
+
     my $type_parameter = $self->type_parameter;
-    
-    (blessed $type_parameter && $type_parameter->isa('Moose::Meta::TypeConstraint'))
-        || confess "The type parameter must be a Moose meta type";
+
+    unless ( blessed $type_parameter && $type_parameter->isa('Moose::Meta::TypeConstraint') ) {
+        require Moose;
+        Moose->throw_error("The type parameter must be a Moose meta type");
+    }
 
     foreach my $type (Moose::Util::TypeConstraints::get_all_parameterizable_types()) {
         if (my $constraint = $type->generate_constraint_for($self)) {
             $self->_set_constraint($constraint);
-            return $self->SUPER::compile_type_constraint;            
+            return $self->SUPER::compile_type_constraint;
         }
     }
-    
-    # if we get here, then we couldn't 
+
+    # if we get here, then we couldn't
     # find a way to parameterize this type
-    confess "The " . $self->name . " constraint cannot be used, because " 
-          . $self->parent->name . " doesn't subtype or coerce from a parameterizable type.";
+    require Moose;
+    Moose->throw_error("The " . $self->name . " constraint cannot be used, because "
+          . $self->parent->name . " doesn't subtype or coerce from a parameterizable type.");
 }
 
-1;
-
-__END__
-
-
-=pod
+sub can_be_inlined {
+    my $self = shift;
 
-=head1 NAME
+    return
+           $self->has_parameterized_from
+        && $self->parameterized_from->has_inline_generator
+        && $self->type_parameter->can_be_inlined;
+}
 
-Moose::Meta::TypeConstraint::Parameterized - Higher Order type constraints for Moose
+sub inline_environment {
+    my $self = shift;
 
-=head1 METHODS
+    return {
+        ($self->has_parameterized_from
+            ? (%{ $self->parameterized_from->inline_environment })
+            : ()),
+        ($self->has_type_parameter
+            ? (%{ $self->type_parameter->inline_environment })
+            : ()),
+    };
+}
 
-=over 4
+sub _inline_check {
+    my $self = shift;
 
-=item B<compile_type_constraint>
+    return unless $self->can_be_inlined;
 
-=item B<type_parameter>
+    return $self->parameterized_from->generate_inline_for( $self->type_parameter, @_ );
+}
 
-=item B<has_type_parameter>
+sub create_child_type {
+    my ($self, %opts) = @_;
+    return Moose::Meta::TypeConstraint::Parameterizable->new(%opts, parent=>$self);
+}
 
-=item B<meta>
+1;
 
-=item B<equals>
+# ABSTRACT: Type constraints with a bound parameter (ArrayRef[Int])
 
-=back
+__END__
 
-=head1 BUGS
 
-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.
+=pod
 
-=head1 AUTHOR
+=head1 METHODS
 
-Stevan Little E<lt>stevan@iinteractive.comE<gt>
+This class is intentionally not documented because the API is
+confusing and needs some work.
 
-=head1 COPYRIGHT AND LICENSE
+=head1 INHERITANCE
 
-Copyright 2006-2008 by Infinity Interactive, Inc.
+C<Moose::Meta::TypeConstraint::Parameterized> is a subclass of
+L<Moose::Meta::TypeConstraint>.
 
-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