unikernel/duniverse/ppxlib/ast/pp/pp.ml

@@ -0,0 +1,16 @@
+let () =
+  match Sys.argv with
+  | [| _; ocaml_version_str; fname |] ->
+      let ocaml_version =
+        match Supported_version.of_string ocaml_version_str with
+        | Some v -> string_of_int (Supported_version.to_int v)
+        | None ->
+            Printf.eprintf "Unknown OCaml version %s\n" ocaml_version_str;
+            exit 1
+      in
+      let ic = open_in_bin fname in
+      Printf.printf "# 1 %S\n" fname;
+      Pp_rewrite.rewrite ocaml_version (Lexing.from_channel ic)
+  | _ ->
+      Printf.eprintf "%s: <ocaml-version> <file-name>\n" Sys.executable_name;
+      exit 2