objgenerator: Implement return with value and .close() method.
Return with value gets converted to StopIteration(value). Implementation
keeps optimizing against creating of possibly unneeded exception objects,
so there're considerable refactoring to implement these features.
diff --git a/py/obj.h b/py/obj.h
index f80bd43..9599d13 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -273,6 +273,7 @@
mp_obj_t mp_obj_new_complex(mp_float_t real, mp_float_t imag);
#endif
mp_obj_t mp_obj_new_exception(const mp_obj_type_t *exc_type);
+mp_obj_t mp_obj_new_exception_args(const mp_obj_type_t *exc_type, uint n_args, const mp_obj_t *args);
mp_obj_t mp_obj_new_exception_msg(const mp_obj_type_t *exc_type, const char *msg);
mp_obj_t mp_obj_new_exception_msg_varg(const mp_obj_type_t *exc_type, 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);
@@ -342,6 +343,7 @@
// exception
bool mp_obj_is_exception_type(mp_obj_t self_in);
bool mp_obj_is_exception_instance(mp_obj_t self_in);
+bool mp_obj_exception_match(mp_obj_t exc, const mp_obj_type_t *exc_type);
void mp_obj_exception_clear_traceback(mp_obj_t self_in);
void mp_obj_exception_add_traceback(mp_obj_t self_in, qstr file, machine_uint_t line, qstr block);
void mp_obj_exception_get_traceback(mp_obj_t self_in, machine_uint_t *n, machine_uint_t **values);