X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMoose%2FRole.pm;h=1c685ed10662c6fd17ab8f287877141f4bccbec0;hb=5394a1c721689ae6c3168a22dd92a0499e8d9744;hp=43e1a796c806adb998df7155df8d52ddd3c8b766;hpb=e462f6f3d260687b8f7372b112a50c5c2a2c431c;p=gitmo%2FMoose.git

diff --git a/lib/Moose/Role.pm b/lib/Moose/Role.pm
index 43e1a79..1c685ed 100644
--- a/lib/Moose/Role.pm
+++ b/lib/Moose/Role.pm
@@ -7,7 +7,7 @@ use Carp         'croak';
 
 use Sub::Exporter;
 
-our $VERSION   = '1.05';
+our $VERSION   = '1.15';
 $VERSION = eval $VERSION;
 our $AUTHORITY = 'cpan:STEVAN';
 
@@ -111,29 +111,42 @@ sub init_meta {
     }
 
     my $metaclass = $args{metaclass} || "Moose::Meta::Role";
+    my $meta_name = exists $args{meta_name} ? $args{meta_name} : 'meta';
 
-    # make a subtype for each Moose class
+    Moose->throw_error("The Metaclass $metaclass must be a subclass of Moose::Meta::Role.")
+        unless $metaclass->isa('Moose::Meta::Role');
+
+    # make a subtype for each Moose role
     role_type $role unless find_type_constraint($role);
 
-    # FIXME copy from Moose.pm
     my $meta;
-    if ($role->can('meta')) {
-        $meta = $role->meta();
-
-        unless ( blessed($meta) && $meta->isa('Moose::Meta::Role') ) {
-            require Moose;
-            Moose->throw_error("You already have a &meta function, but it does not return a Moose::Meta::Role");
+    if ( $meta = Class::MOP::get_metaclass_by_name($role) ) {
+        unless ( $meta->isa("Moose::Meta::Role") ) {
+            my $error_message = "$role already has a metaclass, but it does not inherit $metaclass ($meta).";
+            if ( $meta->isa('Moose::Meta::Class') ) {
+                Moose->throw_error($error_message . ' You cannot make the same thing a role and a class. Remove either Moose or Moose::Role.');
+            } else {
+                Moose->throw_error($error_message);
+            }
         }
     }
     else {
         $meta = $metaclass->initialize($role);
+    }
 
-        $meta->add_method(
-            'meta' => sub {
-                # re-initialize so it inherits properly
-                $metaclass->initialize( ref($_[0]) || $_[0] );
-            }
-        );
+    if (defined $meta_name) {
+        # also check for inherited non moose 'meta' method?
+        my $existing = $meta->get_method($meta_name);
+        if ($existing && !$existing->isa('Class::MOP::Method::Meta')) {
+            Carp::cluck "Moose::Role is overwriting an existing method named "
+                      . "$meta_name in role $role with a method "
+                      . "which returns the class's metaclass. If this is "
+                      . "actually what you want, you should remove the "
+                      . "existing method, otherwise, you should rename or "
+                      . "disable this generated method using the "
+                      . "'-meta_name' option to 'use Moose::Role'.";
+        }
+        $meta->_add_meta_method($meta_name);
     }
 
     return $meta;