[python] long_as_ulong

python/notcurses/context.c

@@ -99,22 +99,22 @@ Notcurses_new(PyTypeObject *subtype, PyObject *args, PyObject *kwds)
 
     if (NULL != margin_top)
     {
-        options.margin_t = GNU_PY_LONG_CHECK(margin_top);
+        options.margin_t = GNU_PY_ULONG_CHECK(margin_top);
     }
 
     if (NULL != margin_right)
     {
-        options.margin_r = GNU_PY_LONG_CHECK(margin_right);
+        options.margin_r = GNU_PY_ULONG_CHECK(margin_right);
     }
 
     if (NULL != margin_bottom)
     {
-        options.margin_b = GNU_PY_LONG_CHECK(margin_bottom);
+        options.margin_b = GNU_PY_ULONG_CHECK(margin_bottom);
     }
 
     if (NULL != margin_left)
     {
-        options.margin_l = GNU_PY_LONG_CHECK(margin_left);
+        options.margin_l = GNU_PY_ULONG_CHECK(margin_left);
     }
 
     options.flags = (uint64_t)flags;

python/notcurses/notcurses-python.h

@@ -238,6 +238,16 @@ static inline void PyObject_cleanup(PyObject **object)
         return_ptr;                                                          \
     })
 
+#define GNU_PY_ULONG_CHECK(py_ulong)                              \
+    ({                                                            \
+        unsigned long new_long = PyLong_AsUnsignedLong(py_ulong); \
+        if (PyErr_Occurred())                                     \
+        {                                                         \
+            return NULL;                                          \
+        }                                                         \
+        new_long;                                                 \
+    })
+
 #define GNU_PY_LONG_CHECK(py_long)              \
     ({                                          \
         long new_long = PyLong_AsLong(py_long); \