in Moose::Object add support for a hook BUILDCLASS which allows

subclasses to change the class the object is being blessed into.  The
intended purpose is to allow MooseX::Traits and other classes which add
a new_with_X_feature to create an anon class and return it.  Thus
allowing all creation to go through a std new()

diff --git a/lib/Moose/Object.pm b/lib/Moose/Object.pm
index 15d9ffa..49f804a 100644 (file)
--- a/lib/Moose/Object.pm
+++ b/lib/Moose/Object.pm
@@ -23,7 +23,12 @@ sub new {
     # We want to support passing $self->new, but initialize
     # takes only an unblessed class name
     my $real_class = Scalar::Util::blessed($class) || $class;
-    my $self = Class::MOP::Class->initialize($real_class)->new_object($params);
+
+       # this provides a hook to allow subclasses, roles, traits etc a chance to change 
+       # how the class will behave
+       my $built_class = $real_class->BUILDALLCLASS($params);
+
+    my $self = Class::MOP::Class->initialize($built_class)->new_object($params);
 
     $self->BUILDALL($params);
 
@@ -56,6 +61,19 @@ sub BUILDALL {
     }
 }
 
+
+sub BUILDALLCLASS {
+    # NOTE: we ask Perl if we even
+    # need to do this first, to avoid
+    # extra meta level calls
+       return $_[0] unless $_[0]->can('BUILDCLASS');
+    my ($class, $params) = @_;
+    foreach my $method (reverse Class::MOP::class_of($class)->find_all_methods_by_name('BUILDCLASS')) {
+        $class = $method->{code}->execute($class, $params);
+    }
+       return $class;
+}
+
 sub DEMOLISHALL {
     my $self = shift;
     my ($in_global_destruction) = @_;