1 files changed, 44 insertions, 0 deletions
diff --git a/circuitpython/py/proto.h b/circuitpython/py/proto.h
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+++ b/circuitpython/py/proto.h
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+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Jeff Epler for Adafruit Industries
+ *
+ * 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.
+ */
+
+#ifndef MICROPY_INCLUDED_PY_PROTO_H
+#define MICROPY_INCLUDED_PY_PROTO_H
+
+#ifdef MICROPY_UNSAFE_PROTO
+#define MP_PROTOCOL_HEAD /* NOTHING */
+#define MP_PROTO_IMPLEMENT(name) /* NOTHING */
+static inline void *mp_proto_get(uint16_t name, mp_const_obj_type_t obj) {
+    return mp_type_get_protocol_slot(mp_obj_get_type(obj));
+}
+#else
+#define MP_PROTOCOL_HEAD \
+    uint16_t name; // The name of this protocol, a qstr
+#define MP_PROTO_IMPLEMENT(n) .name = n,
+const void *mp_proto_get(uint16_t name, mp_const_obj_t obj);
+const void *mp_proto_get_or_throw(uint16_t name, mp_const_obj_t obj);
+#endif
+
+#endif