add support for adding identifiers instead of only changing them (enabled per default)

[helm.git] / helm / software / matita / rottener.ml

diff --git a/helm/software/matita/rottener.ml b/helm/software/matita/rottener.ml
index fa09d07d3a88f9a1d4f5073545089a558acdd00e..dfb64037eeab8c0eec8e80a186a13d9e0b48b218 100644 (file)
--- a/helm/software/matita/rottener.ml
+++ b/helm/software/matita/rottener.ml
@@ -28,6 +28,9 @@ open Printf
 module Ast = GrafiteAst
 module Pt = CicNotationPt
 
+  (* set to false to change identifier instead of adding extra identifiers *)
+let add_ident = ref true
+
 let error_token = "O"
 let error_token_len = String.length error_token
 
@@ -87,14 +90,19 @@ let rotten_script ~fname statement =
         (sanitize_tokens [] tokens) in
     List.nth idents (Random.int (List.length idents))
   in
-  let start_pos, end_pos =
+  let start_pos, end_pos =  (* positions in bytecount *)
     Glib.Utf8.offset_to_pos statement 0 (Stdpp.first_pos target_pos),
     Glib.Utf8.offset_to_pos statement 0 (Stdpp.last_pos target_pos) in
   let statement' =
-    (* positions in bytecount *)
-    String.sub statement 0 start_pos
-    ^ "O"
-    ^ String.sub statement end_pos (String.length statement - end_pos) in
+    if !add_ident then
+      String.sub statement 0 start_pos
+      ^ "O "
+      ^ String.sub statement start_pos (String.length statement - start_pos)
+    else
+      String.sub statement 0 start_pos
+      ^ "O"
+      ^ String.sub statement end_pos (String.length statement - end_pos)
+  in
   let script = HExtlib.input_file fname in
   let matches =
     let rex =
@@ -105,10 +113,12 @@ let rotten_script ~fname statement =
     with Not_found -> assert false
   in
   let trailer = (* trailing comment with machine parseable error location *)
-    let preamble_len = String.length matches.(1) in
-    sprintf "\n(*\nerror-at: %d-%d\n*)\n" (preamble_len + start_pos)
-      (preamble_len + start_pos + error_token_len) in
-  let script' = sprintf "%s%s%s%s" matches.(1) statement' matches.(3) trailer in
+    let preamble_len = Glib.Utf8.length matches.(1) in
+    sprintf "\n(*\nerror-at: %d-%d\n*)\n"
+      (preamble_len + Stdpp.first_pos target_pos)
+      (preamble_len + Stdpp.first_pos target_pos + error_token_len) in
+  let script' =
+    sprintf "%s%s%s%s" matches.(1) statement' matches.(3) trailer in
   let md5 = Digest.to_hex (Digest.string script') in
   HExtlib.output_file
     ~filename:(sprintf "%s.%s.rottened" fname md5)
@@ -154,6 +164,6 @@ let handle_localized_exns f arg =
     eprintf "Error at %d-%d: %s\n%!" loc_begin loc_end (Printexc.to_string exn)
 
 let _ =
-  Random.init 17;
+  Random.self_init ();
   handle_localized_exns grep ()