New test script.

Makefile

@@ -20,7 +20,9 @@ doc:
 	$(COMP) $(FLAGS) $(DIRS) $(DOC)
 
 test: $(TEST)
-	./tests/main tests/test-0.d
+
+test-full: $(TEST)
+	./tests/run
 
 $(TEST): $(LIB)
 	$(COMP) $(FLAGS) $(DIRS) $(TEST)

sat/sat.ml

@@ -11,7 +11,12 @@ module Fsat = struct
   let max_lit = min max_int (- min_int)
   let max_index = ref 0
 
-  let make i = if i <> 0 then i else raise Dummy
+  let make i =
+      if i <> 0 then begin
+          max_index := max !max_index (abs i);
+          i
+      end else
+          raise Dummy
 
   let dummy = 0
 

sat/sat.mli

@@ -18,7 +18,7 @@ module Make(Dummy: sig end) : sig
 
   val make : int -> atom
   (** Returns the literal corresponding to the integer.
-      @raise bad_atom if given [0] as argument.*)
+      @raise Bad_atom if given [0] as argument.*)
 
   val neg : atom -> atom
   (** [neg a] returns the negation of a literal. Involutive, i.e [neg (neg a) = a]. *)

tests/run

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+solvertest () {
+    for f in `find $1 -name *.d -type f`
+    do
+        echo -ne "\r\033[K Testing $f "
+        tests/main $f | grep $2 > /dev/null 2> /dev/null
+        RET=$?
+        if [ $RET -ne 0 ];
+        then
+            echo -e "\r\033[K\e[31m[KO]\e[0m $f"
+            exit 2
+        fi
+    done
+    echo -e "\r\033[K\e[32m[OK]\e[0m $2"
+}
+
+solvertest "tests/sat/" "Sat"
+solvertest "tests/unsat/" "Unsat"

tests/sat/test-000.d

@@ -1,3 +1,3 @@
-c First test
+c Status: SAT
 p cnf 2 1
 1 2 0

tests/unsat/test-001.d

@@ -0,0 +1,8 @@
+c First test
+p cnf 5 6
+1 2 0
+-1 3 0
+-2 3 0
+4 5 0
+-4 -3 0
+-5 -3 0

util/lexdimacs.mll

@@ -11,6 +11,6 @@ rule token = parse
   | 'p'                     { P }
   | "cnf"                   { CNF }
   | '\n'                    { EOL }
-  | "c " [^ '\n']* '\n'      { token lexbuf }
+  | "c " [^ '\n']* '\n'     { token lexbuf }
   | ['-']? number           { LIT (int_of_string (Lexing.lexeme lexbuf)) }
   | eof                     { EOF }

util/parsedimacs.mly

@@ -15,15 +15,16 @@
 /* DIMACS syntax */
 
 file:
-  | EOF                         { [] }
+  | EOF                             { [] }
   | P CNF LIT LIT EOL clause_list   { $6 }
 ;
 clause_list:
   | EOF                 { [] }
+  | EOL clause_list     { $2 }
   | clause clause_list  { $1 :: $2 }
 ;
 clause:
-  /* Clause always ends with a '0' */
+  /* clauses always ends with a '0' */
   | LIT EOL         { if $1 = 0 then [] else raise (Clause_ending $1) }
   | LIT clause      { $1 :: $2 }
 ;

util/test.ml

@@ -3,12 +3,15 @@ module S = Sat.Make(struct end)
 
 (* Arguments parsing *)
 let file = ref ""
+let p_assign = ref false
 
 let input_file = fun s -> file := s
 let usage = "Usage : main [options] <file>"
 let argspec = Arg.align [
     "-v", Arg.Int (fun i -> Log.set_debug i),
-    "<lvl> Sets the debug verbose level";
+        "<lvl> Sets the debug verbose level";
+    "-model", Arg.Set p_assign,
+        " Outputs the boolean model found if sat";
 ]
 
 (* Entry file parsing *)
@@ -33,7 +36,7 @@ let print_assign fmt () =
   S.iter_atoms (fun a ->
       Format.fprintf fmt "%a -> %s,@ "
         S.print_atom a
-        (if S.eval a then "true" else "false")
+        (if S.eval a then "T" else "F")
     )
 
 let main () =
@@ -43,8 +46,14 @@ let main () =
       exit 2
   end;
   let cnf = get_cnf () in
-  print_cnf cnf;
-  ()
+  S.assume cnf;
+  match S.solve () with
+  | S.Sat ->
+          Format.printf "Sat@.";
+          if !p_assign then
+              print_assign Format.std_formatter ()
+  | S.Unsat ->
+          Format.printf "Unsat@."
 ;;
 
 main ()