py: add variable argument exception constructor function.

Addresses issue #104.

1 files changed, 1 insertions, 0 deletions

diff --git a/py/obj.h b/py/obj.h
index a3af7f556b..5eb9fee75a 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -191,6 +191,7 @@ mp_obj_t mp_obj_new_exception(qstr id);
 mp_obj_t mp_obj_new_exception_msg(qstr id, const char *msg);
 mp_obj_t mp_obj_new_exception_msg_1_arg(qstr id, const char *fmt, const char *a1);
 mp_obj_t mp_obj_new_exception_msg_2_args(qstr id, const char *fmt, const char *a1, const char *a2);
+mp_obj_t mp_obj_new_exception_msg_varg(qstr id, const char *fmt, ...); // counts args by number of % symbols in fmt, excluding %%; can only handle void* sizes (ie no float/double!)
 mp_obj_t mp_obj_new_range(int start, int stop, int step);
 mp_obj_t mp_obj_new_range_iterator(int cur, int stop, int step);
 mp_obj_t mp_obj_new_fun_bc(int n_args, uint n_state, const byte *code);