Add objtuple.h to allow embedding of tuples inside other objects.
This is useful because tuple is closest analog of C static array.
diff --git a/py/objtuple.c b/py/objtuple.c
index 7685cc4..9821dd2 100644
--- a/py/objtuple.c
+++ b/py/objtuple.c
@@ -9,19 +9,14 @@
#include "obj.h"
#include "runtime0.h"
#include "runtime.h"
-
-typedef struct _mp_obj_tuple_t {
- mp_obj_base_t base;
- machine_uint_t len;
- mp_obj_t items[];
-} mp_obj_tuple_t;
+#include "objtuple.h"
static mp_obj_t mp_obj_new_tuple_iterator(mp_obj_tuple_t *tuple, int cur);
/******************************************************************************/
/* tuple */
-static void tuple_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in) {
+void tuple_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in) {
mp_obj_tuple_t *o = o_in;
print(env, "(");
for (int i = 0; i < o->len; i++) {