X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_notation%2Ftest_lexer.ml;h=569e86e442ae20383cb7b63a6ce1769391f1fa23;hb=4167cea65ca58897d1a3dbb81ff95de5074700cc;hp=7672d3070d3d400ed702d26cf29e105e490e36ba;hpb=879797d6505bc39489009d9ae1e2506022bde9e2;p=helm.git

diff --git a/helm/ocaml/cic_notation/test_lexer.ml b/helm/ocaml/cic_notation/test_lexer.ml
index 7672d3070..569e86e44 100644
--- a/helm/ocaml/cic_notation/test_lexer.ml
+++ b/helm/ocaml/cic_notation/test_lexer.ml
@@ -23,20 +23,36 @@
  * http://helm.cs.unibo.it/
  *)
 
-let ic =
+let _ =
+  let level = ref "2@" in
+  let ic = ref stdin in
+  let arg_spec = [ "-level", Arg.Set_string level, "set the notation level" ] in
+  let usage = "test_lexer [ -level level ] [ file ]" in
+  let open_file fname =
+    if !ic <> stdin then close_in !ic;
+    ic := open_in fname
+  in
+  Arg.parse arg_spec open_file usage;
+  let lexer =
+    match !level with
+	"1" -> CicNotationLexer.level1_pattern_lexer
+      | "2@" -> CicNotationLexer.level2_ast_lexer
+      | "2$" -> CicNotationLexer.level2_meta_lexer
+      | l ->
+	  prerr_endline (Printf.sprintf "Unsupported level %s" l);
+	  exit 2
+  in
+  let token_stream =
+    fst (lexer.Token.tok_func (Obj.magic (Ulexing.from_utf8_channel !ic)))
+  in
+  Printf.printf "Lexing notation level %s\n" !level; flush stdout;
+  let rec dump () =
+    let (a,b) = Stream.next token_stream in
+    if a = "EOI" then raise Stream.Failure;
+    print_endline (Printf.sprintf "%s '%s'" a b);
+    dump ()
+  in
   try
-    open_in Sys.argv.(1)
-  with Invalid_argument _ -> stdin
-in
-let token_stream =
-  fst (CicNotationLexer.level1_lexer.Token.tok_func (Stream.of_channel ic))
-in
-let rec dump () =
-  let (a,b) = Stream.next token_stream in
-  if a = "EOI" then raise Stream.Failure;
-  print_endline (Printf.sprintf "%s '%s'" a b);
-  dump ()
-in
-try
-  dump ()
-with Stream.Failure -> ()
+    dump ()
+  with Stream.Failure -> ()
+