--- /dev/null
+/*
+** upb_decode: parsing into a upb_msg using a upb_msglayout.
+*/
+
+#ifndef UPB_DECODE_H_
+#define UPB_DECODE_H_
+
+#include "upb/msg.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool upb_decode(const char *buf, size_t size, upb_msg *msg,
+ const upb_msglayout *l, upb_arena *arena);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* UPB_DECODE_H_ */