map: Add empty fixed map.

Useful when need to call kw-receiving functions  without any keywords
from C, etc.

1 files changed, 2 insertions, 0 deletions

diff --git a/py/obj.h b/py/obj.h
index 09f277a19..8a8a1eb21 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -148,6 +148,8 @@ typedef enum _mp_map_lookup_kind_t {
     MP_MAP_LOOKUP_REMOVE_IF_FOUND,    // 2
 } mp_map_lookup_kind_t;
 
+extern const mp_map_t mp_const_empty_map;
+
 static inline bool MP_MAP_SLOT_IS_FILLED(const mp_map_t *map, mp_uint_t pos) { return ((map)->table[pos].key != MP_OBJ_NULL && (map)->table[pos].key != MP_OBJ_SENTINEL); }
 
 void mp_map_init(mp_map_t *map, mp_uint_t n);