py: simplify __next__ method for generators.

py/builtin.c

@@ -11,7 +11,6 @@
 #include "obj.h"
 #include "runtime0.h"
 #include "runtime.h"
-//#include "bc.h"
 #include "map.h"
 #include "builtin.h"
 
@@ -293,8 +292,13 @@ mp_obj_t mp_builtin_min(int n_args, const mp_obj_t *args) {
     }
 }
 
-static mp_obj_t mp_builtin_next(mp_obj_t o_in) {
-    return mp_obj_gen_instance_next(o_in);
+static mp_obj_t mp_builtin_next(mp_obj_t o) {
+    mp_obj_t ret = rt_iternext(o);
+    if (ret == mp_const_stop_iteration) {
+        nlr_jump(mp_obj_new_exception(qstr_from_str_static("StopIteration")));
+    } else {
+        return ret;
+    }
 }
 
 MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_next_obj, mp_builtin_next);

py/obj.h

@@ -220,8 +220,6 @@ void mp_obj_fun_bc_get(mp_obj_t self_in, int *n_args, uint *n_state, const byte
 
 // generator
 extern const mp_obj_type_t gen_instance_type;
-mp_obj_t mp_obj_gen_instance_next(mp_obj_t self_in);
-MP_DECLARE_CONST_FUN_OBJ(mp_obj_gen_instance_next_obj);
 
 // class
 extern const mp_obj_type_t class_type;

py/objgenerator.c

@@ -117,14 +117,3 @@ mp_obj_t mp_obj_new_gen_instance(mp_obj_t state, const byte *ip, mp_obj_t *sp) {
     o->sp = sp;
     return o;
 }
-
-mp_obj_t mp_obj_gen_instance_next(mp_obj_t self_in) {
-    mp_obj_t ret = rt_iternext(self_in);
-    if (ret == mp_const_stop_iteration) {
-        nlr_jump(mp_obj_new_exception(qstr_from_str_static("StopIteration")));
-    } else {
-        return ret;
-    }
-}
-
-MP_DEFINE_CONST_FUN_OBJ_1(mp_obj_gen_instance_next_obj, mp_obj_gen_instance_next);

py/runtime.c

@@ -772,7 +772,7 @@ mp_obj_t rt_load_attr(mp_obj_t base, qstr attr) {
 void rt_load_method(mp_obj_t base, qstr attr, mp_obj_t *dest) {
     DEBUG_OP_printf("load method %s\n", qstr_str(attr));
     if (MP_OBJ_IS_TYPE(base, &gen_instance_type) && attr == rt_q___next__) {
-        dest[1] = (mp_obj_t)&mp_obj_gen_instance_next_obj;
+        dest[1] = (mp_obj_t)&mp_builtin_next_obj;
         dest[0] = base;
         return;
     } else if (MP_OBJ_IS_TYPE(base, &instance_type)) {