1 files changed, 71 insertions, 0 deletions
diff --git a/circuitpython/py/objcell.c b/circuitpython/py/objcell.c
new file mode 100644
index 0000000..2e15e68
--- /dev/null
+++ b/circuitpython/py/objcell.c
@@ -0,0 +1,71 @@
+/*
+ * 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 "py/obj.h"
+
+typedef struct _mp_obj_cell_t {
+    mp_obj_base_t base;
+    mp_obj_t obj;
+} mp_obj_cell_t;
+
+mp_obj_t mp_obj_cell_get(mp_obj_t self_in) {
+    mp_obj_cell_t *self = MP_OBJ_TO_PTR(self_in);
+    return self->obj;
+}
+
+void mp_obj_cell_set(mp_obj_t self_in, mp_obj_t obj) {
+    mp_obj_cell_t *self = MP_OBJ_TO_PTR(self_in);
+    self->obj = obj;
+}
+
+#if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
+STATIC void cell_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
+    (void)kind;
+    mp_obj_cell_t *o = MP_OBJ_TO_PTR(o_in);
+    mp_printf(print, "<cell %p ", o->obj);
+    if (o->obj == MP_OBJ_NULL) {
+        mp_print_str(print, "(nil)");
+    } else {
+        mp_obj_print_helper(print, o->obj, PRINT_REPR);
+    }
+    mp_print_str(print, ">");
+}
+#endif
+
+STATIC const mp_obj_type_t mp_type_cell = {
+    { &mp_type_type },
+    .name = MP_QSTR_, // cell representation is just value in < >
+    #if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
+    .print = cell_print,
+    #endif
+};
+
+mp_obj_t mp_obj_new_cell(mp_obj_t obj) {
+    mp_obj_cell_t *o = m_new_obj(mp_obj_cell_t);
+    o->base.type = &mp_type_cell;
+    o->obj = obj;
+    return MP_OBJ_FROM_PTR(o);
+}