* 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 (Stream.of_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 -> ()
+