1 files changed, 56 insertions, 0 deletions
diff --git a/circuitpython/py/warning.c b/circuitpython/py/warning.c
new file mode 100644
index 0000000..71a3ac5
--- /dev/null
+++ b/circuitpython/py/warning.c
@@ -0,0 +1,56 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2014 Damien P. George
+ * SPDX-FileCopyrightText: Copyright (c) 2015-2018 Paul Sokolovsky
+ *
+ * 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 <stdarg.h>
+#include <stdio.h>
+
+#include "py/emit.h"
+#include "py/runtime.h"
+
+#if MICROPY_WARNINGS
+
+void mp_warning(const char *category, const char *msg, ...) {
+    if (category == NULL) {
+        category = "Warning";
+    }
+    mp_print_str(MICROPY_ERROR_PRINTER, category);
+    mp_print_str(MICROPY_ERROR_PRINTER, ": ");
+
+    va_list args;
+    va_start(args, msg);
+    mp_vprintf(MICROPY_ERROR_PRINTER, msg, args);
+    mp_print_str(MICROPY_ERROR_PRINTER, "\n");
+    va_end(args);
+}
+
+void mp_emitter_warning(pass_kind_t pass, const char *msg) {
+    if (pass == MP_PASS_CODE_SIZE) {
+        mp_warning(NULL, msg);
+    }
+}
+
+#endif // MICROPY_WARNINGS