X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=ocaml%2Fparser.ml;h=570809dd6d4a6c952ee0139851bd97bef7be2af1;hb=137e2373f8875992898f8be0e07c4299ffbf3516;hp=ac692516a68cc1786e4b46c08435992236b8e478;hpb=15c305b0d106b39616bdeea9aec9febc7539c2c1;p=fireball-separation.git

diff --git a/ocaml/parser.ml b/ocaml/parser.ml
index ac69251..570809d 100644
--- a/ocaml/parser.ml
+++ b/ocaml/parser.ml
@@ -148,11 +148,13 @@ let _ = prerr_endline (">>>" ^ string_of_term (parse "(\\x. x y z z1 k) z1 z j")
    let n_bot = try Util.index_of "BOT" free with Not_found -> min_int in
    let n_pac = try Util.index_of "PAC" free with Not_found -> min_int in
    let n_bomb = try Util.index_of "BOMB" free with Not_found -> min_int in
+   let n_z = try Util.index_of "Z" free with Not_found -> min_int in
    let fix lev v =
     if v = lev + n_bot then `Bottom
      else if v = lev + n_pac then `Pacman
       else if v = lev + n_bomb then `Lam(true, `Bottom)
-       else `Var(v,1) in (* 1 by default when variable not applied *)
+       else if v = lev + n_z then `Var(lev, 0) (* FIXME why zero? *)
+        else `Var(v,1) in (* 1 by default when variable not applied *)
    (* Fix arity *)
    let open Num in
    let exclude_bottom = function
@@ -173,31 +175,37 @@ let _ = prerr_endline (">>>" ^ string_of_term (parse "(\\x. x y z z1 k) z1 z j")
 let problem_of_string s =
 prerr_endline (s);
  let lines = Str.split (Str.regexp "[\n\r\x0c\t;]+") s in
- let lines = List.map String.trim lines in
+ (* let lines = List.map String.trim lines in *)
  let lines = List.filter ((<>) "") lines in
  prerr_endline("number of lines" ^ string_of_int (List.length lines));
  let aux (last, name, div, conv, ps) line =
   let chr = String.sub line 0 1 in
-  let line = String.sub line 1 (String.length line - 1) in
+  let line = String.trim (String.sub line 1 (String.length line - 1)) in
   if line = "" then chr, name, div, conv, ps else
   let rec aux' chr line =
    if chr = "#"
-    then chr, line, div, conv, ps
+    then chr, name, div, conv, ps
+   else if chr = "$"
+    then "#", line, div, conv, ps
    else if chr = "D"
     then chr, name, line, conv, ps
    else if chr = "C"
     then chr, name, div, line::conv, ps
    else if chr = "N"
     then chr, name, div, conv, line::ps
-   else if last = ""
-    then raise (ParsingError ("Unexpected at beginning of problem: " ^ chr))
-   else aux' last (chr ^ line) in
+   else if chr = " "
+    then aux' last line
+   else raise (ParsingError
+     ("Unexpected at beginning of problem: `" ^ chr ^ "` " ^ line)) in
   aux' chr line in
- let _, name, div, conv, ps = List.fold_left aux ("#", "?", "", [], []) lines in
+ let _, name, div, conv, ps = List.fold_left aux ("#", "no label", "", [], []) lines in
  let div_provided = div <> "" in
  let div = if div_provided then div else "BOT" in
  let strs = [div] @ ps @ conv in
 
+ if strs = ["BOT"]
+  then raise (ParsingError "empty problem");
+
  (* parse' *)
  let (tms, free) = parse_many strs in
  (* Replace pacmans and bottoms *)
@@ -246,3 +254,18 @@ let ps = List.map (
  ) ps in
  name, div, conv, ps, free
 ;;
+
+
+let from_file path =
+ let lines = ref [""] in
+ let chan = open_in path in
+ let _ = try
+  while true; do
+    lines := input_line chan :: !lines
+  done
+ with End_of_file ->
+  close_in chan in
+ let txt = String.concat "\n" (List.rev !lines) in
+ let problems = Str.split (Str.regexp "[\n\r]+\\$") txt in
+ List.map problem_of_string (List.tl (List.map ((^) "$") problems))
+;;