py: mp_call_function_*_protected(): Pass-thru return value if possible.
Return the result of called function. If exception happened, return
MP_OBJ_NULL. Allows to use mp_call_function_*_protected() with callbacks
returning values, etc.
diff --git a/py/runtime.h b/py/runtime.h
index 9c1921c..3f0d110 100644
--- a/py/runtime.h
+++ b/py/runtime.h
@@ -106,8 +106,9 @@
mp_obj_t mp_call_method_n_kw_var(bool have_self, size_t n_args_n_kw, const mp_obj_t *args);
mp_obj_t mp_call_method_self_n_kw(mp_obj_t meth, mp_obj_t self, size_t n_args, size_t n_kw, const mp_obj_t *args);
// Call function and catch/dump exception - for Python callbacks from C code
-void mp_call_function_1_protected(mp_obj_t fun, mp_obj_t arg);
-void mp_call_function_2_protected(mp_obj_t fun, mp_obj_t arg1, mp_obj_t arg2);
+// (return MP_OBJ_NULL in case of exception).
+mp_obj_t mp_call_function_1_protected(mp_obj_t fun, mp_obj_t arg);
+mp_obj_t mp_call_function_2_protected(mp_obj_t fun, mp_obj_t arg1, mp_obj_t arg2);
typedef struct _mp_call_args_t {
mp_obj_t fun;