circuitpython/py/objnone.c

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#include <stdlib.h>
#include <stdint.h>
#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "obj.h"
typedef struct _mp_obj_none_t {
mp_obj_base_t base;
} mp_obj_none_t;
void none_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
print(env, "None");
}
const mp_obj_type_t none_type = {
{ &mp_const_type },
"NoneType",
.print = none_print,
};
static const mp_obj_none_t none_obj = {{&none_type}};
const mp_obj_t mp_const_none = (mp_obj_t)&none_obj;
// the stop-iteration object just needs to be something unique
// it's not the StopIteration exception
static const mp_obj_none_t stop_it_obj = {{&none_type}};
const mp_obj_t mp_const_stop_iteration = (mp_obj_t)&stop_it_obj;