runtime: Split mp_call_prepare_args_n_kw_var() from mp_call_method_n_kw_var().

Allow for reuse for stackless design, where preparing args is separate from
calling.

1 files changed, 11 insertions, 0 deletions

diff --git a/py/runtime.h b/py/runtime.h
index bead02831..8666ce107 100644
--- a/py/runtime.h
+++ b/py/runtime.h
@@ -97,6 +97,17 @@ mp_obj_t mp_call_function_n_kw(mp_obj_t fun, mp_uint_t n_args, mp_uint_t n_kw, c
 mp_obj_t mp_call_method_n_kw(mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args);
 mp_obj_t mp_call_method_n_kw_var(bool have_self, mp_uint_t n_args_n_kw, const mp_obj_t *args);
 
+typedef struct _call_args_t {
+    mp_obj_t fun;
+    mp_uint_t n_args, n_kw, n_alloc;
+    mp_obj_t *args;
+} call_args_t;
+
+// Takes arguments which are the most general mix of Python arg types, and
+// prepares argument array suitable for passing to ->call() method of a
+// function object (and mp_call_function_n_kw()).
+void mp_call_prepare_args_n_kw_var(bool have_self, mp_uint_t n_args_n_kw, const mp_obj_t *args, call_args_t *out_args);
+
 void mp_unpack_sequence(mp_obj_t seq, mp_uint_t num, mp_obj_t *items);
 void mp_unpack_ex(mp_obj_t seq, mp_uint_t num, mp_obj_t *items);
 mp_obj_t mp_store_map(mp_obj_t map, mp_obj_t key, mp_obj_t value);