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