From dfcac7819cb61c55bf59e56f38f28be70fc95be7 Mon Sep 17 00:00:00 2001
From: acondolu <andrea.condoluci@unibo.it>
Date: Wed, 26 Jul 2017 11:07:15 +0200
Subject: [PATCH] Copied old code back in parser, to make andrea8 great again

---
 ocaml/parser.ml  | 36 +++++++++++++++++++++++++++++-------
 ocaml/parser.mli | 14 ++++++++++++--
 2 files changed, 41 insertions(+), 9 deletions(-)

diff --git a/ocaml/parser.ml b/ocaml/parser.ml
index ea885d2..fbce730 100644
--- a/ocaml/parser.ml
+++ b/ocaml/parser.ml
@@ -1,8 +1,14 @@
-exception ParsingError of string;;
+type term =
+  | Var of int
+  | App of term * term
+  | Lam of term
+;;
 
-let mk_app x y = Num.mk_app x y;;
-let mk_lam x = `Lam(true, x);;
-let mk_var x = `Var(x, -666);;
+let mk_app x y = App(x, y);;
+let mk_lam x = Lam x;;
+let mk_var x = Var x;;
+
+exception ParsingError of string;;
 
 let isAlphaNum c = let n = Char.code c in
  (48 <= n && n <= 90) || (95 <= n && n <= 122) ;;
@@ -30,10 +36,10 @@ let explode s =
 ;;
 
 let implode l =
-  let res = Bytes.create (List.length l) in
+  let res = String.create (List.length l) in
   let rec aux i = function
     | [] -> res
-    | c :: l -> Bytes.set res i c; aux (i + 1) l in
+    | c :: l -> String.set res i c; aux (i + 1) l in
   aux 0 l
 ;;
 
@@ -146,7 +152,7 @@ let _ = prerr_endline (">>>" ^ string_of_term (parse "(\\x. x y z z1 k) z1 z j")
 
 *******************************************************************************)
 
-let problem_of_string s =
+(* let problem_of_string s =
  let lines = Str.split (Str.regexp "[\n\r\x0c\t;]+") s in
  let head, lines = List.hd lines, List.tl lines in
  let name = String.trim (String.sub head 1 (String.length head - 1)) in
@@ -241,4 +247,20 @@ let from_file path =
  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))
+;; *)
+
+let parse x =
+  match read_smt ([],[]) (explode x) with
+  | Some [y], [], _ -> y
+  | _, _, _ -> assert false
+;;
+
+
+let parse_many strs =
+  let f (x, y) z = match read_smt y (explode z) with
+  | Some[tm], [], vars -> (tm :: x, vars)
+  | _, _, _ -> assert false
+  in let aux = List.fold_left f ([], ([], []))
+  in let (tms, (_, free)) = aux strs
+  in (List.rev tms, free)
 ;;
diff --git a/ocaml/parser.mli b/ocaml/parser.mli
index d131edb..8dba854 100644
--- a/ocaml/parser.mli
+++ b/ocaml/parser.mli
@@ -1,6 +1,11 @@
+type term =
+  | Var of int
+  | App of term * term
+  | Lam of term
+
 exception ParsingError of string
 
-val problem_of_string:
+(* val problem_of_string:
  string ->
   string (* problem label *)
   * Num.i_var option (* div *)
@@ -12,4 +17,9 @@ val from_file : string ->
  * Num.i_var option (* div *)
  * Num.i_n_var list (* conv *)
  * Num.i_n_var list (* ps *)
- * string list (* names of free variables *)) list
+ * string list (* names of free variables *)) list *)
+
+ (* parses a string to a term *)
+ val parse: string -> term
+ (* parse many strings/terms, and returns the list of parsed terms + the list of free variables; variable 0 is not used *)
+ val parse_many: string list -> term list * string list
-- 
2.39.2