1 files changed, 58 insertions, 0 deletions
diff --git a/circuitpython/py/objnone.c b/circuitpython/py/objnone.c
new file mode 100644
index 0000000..2c33d89
--- /dev/null
+++ b/circuitpython/py/objnone.c
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+
+#include "py/obj.h"
+
+#if !MICROPY_OBJ_IMMEDIATE_OBJS
+typedef struct _mp_obj_none_t {
+    mp_obj_base_t base;
+} mp_obj_none_t;
+#endif
+
+STATIC void none_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
+    (void)self_in;
+    if (MICROPY_PY_UJSON && kind == PRINT_JSON) {
+        mp_print_str(print, "null");
+    } else {
+        mp_print_str(print, "None");
+    }
+}
+
+const mp_obj_type_t mp_type_NoneType = {
+    { &mp_type_type },
+    .flags = MP_TYPE_FLAG_EXTENDED,
+    .name = MP_QSTR_NoneType,
+    .print = none_print,
+    MP_TYPE_EXTENDED_FIELDS(
+        .unary_op = mp_generic_unary_op,
+        ),
+};
+
+#if !MICROPY_OBJ_IMMEDIATE_OBJS
+const mp_obj_none_t mp_const_none_obj = {{&mp_type_NoneType}};
+#endif