Change the return type of PyPtr#__ob_type__

Author: mrkn

ext/pycall/pyptr/pyptr.c

@@ -284,7 +284,7 @@ pycall_pyptr_get_ob_type(VALUE obj)
 {
   PyObject* pyobj = get_pyobj_ptr(obj);
   if (pyobj) {
-    VALUE pytypeobj = pycall_pyptr_new((PyObject *)pyobj->ob_type);
+    VALUE pytypeobj = pycall_pytypeptr_new(pyobj->ob_type);
     return pytypeobj;
   }
   return Qnil;
@@ -381,6 +381,12 @@ pycall_pytypeptr_allocate(VALUE klass)
   return TypedData_Wrap_Struct(klass, &pycall_pytypeptr_data_type, NULL);
 }
 
+VALUE
+pycall_pytypeptr_new(PyTypeObject *pytypeobj)
+{
+  return pycall_pyptr_new_with_klass(cPyTypePtr, (PyObject *)pytypeobj);
+}
+
 static VALUE
 pycall_pytypeptr_get_ob_size(VALUE obj)
 {

ext/pycall/pyptr/pyptr.h

@@ -299,6 +299,7 @@ PyObject* pycall_pyptr_get_pyobj_ptr(VALUE obj);
 VALUE pycall_pyptr_new(PyObject *pyobj);
 VALUE pycall_pyptr_incref(VALUE pyptr);
 VALUE pycall_pyptr_decref(VALUE pyptr);
+VALUE pycall_pytypeptr_new(PyTypeObject *pytypeobj);
 
 #if defined(__cplusplus)
 #if 0

spec/pycall/pyptr_spec.rb

@@ -46,7 +46,7 @@ module PyCall
 
     describe '#__ob_type__' do
       it 'returns a PyPtr for None' do
-        expect(PyPtr::None.__ob_type__).to be_a(PyPtr)
+        expect(PyPtr::None.__ob_type__).to be_a(PyTypePtr)
       end
     end