module GA = GrafiteAst;; module LA = LexiconAst;; module PT = CicNotationPt;; module A = Ast;; let floc = HExtlib.dummy_floc;; let paramod_timeout = ref 600;; let universe = "Univ" ;; let kw = [ "and","myand" ];; let mk_ident s = PT.Ident ((try List.assoc s kw with Not_found -> s),None) ;; let rec collect_arities_from_term = function | A.Constant name -> [name,0] | A.Variable name -> [] | A.Function (name,l) -> (name,List.length l)::List.flatten (List.map collect_arities_from_term l) ;; let rec collect_fv_from_term = function | A.Constant name -> [] | A.Variable name -> [name] | A.Function (_,l) -> List.flatten (List.map collect_fv_from_term l) ;; let collect_arities_from_atom a = let aux = function | A.Proposition name -> assert false | A.Predicate _ -> assert false | A.True -> [] | A.False -> [] | A.Eq (t1,t2) -> collect_arities_from_term t1 @ collect_arities_from_term t2 | A.NotEq (t1,t2) -> collect_arities_from_term t1 @ collect_arities_from_term t2 in aux a ;; let collect_fv_from_atom a = let aux = function | A.Proposition name -> assert false | A.Predicate _ -> assert false | A.True -> [] | A.False -> [] | A.Eq (t1,t2) -> collect_fv_from_term t1 @ collect_fv_from_term t2 | A.NotEq (t1,t2) -> collect_fv_from_term t1 @ collect_fv_from_term t2 in HExtlib.list_uniq (List.sort compare (aux a)) ;; let collect_fv_from_formulae = function | A.Disjunction _ -> assert false | A.NegAtom a | A.Atom a -> collect_fv_from_atom a ;; let rec convert_term = function | A.Variable x -> mk_ident x | A.Constant x -> mk_ident x | A.Function (name, args) -> PT.Appl (mk_ident name :: List.map convert_term args) ;; let atom_of_formula = function | A.Disjunction _ -> assert false | A.NegAtom a -> a (* removes the negation *) | A.Atom a -> a ;; let rec mk_arrow component = function | 0 -> mk_ident component | n -> PT.Binder (`Forall, ((mk_ident "_"),Some (mk_ident component)), mk_arrow component (n-1)) ;; let build_ctx_for_arities univesally arities t = let binder = if univesally then `Forall else `Exists in let rec aux = function | [] -> t | (name,nargs)::tl -> PT.Binder (binder, (mk_ident name,Some (mk_arrow universe nargs)), aux tl) in aux arities ;; let convert_atom universally a = let aux = function | A.Proposition _ -> assert false | A.Predicate (name,params) -> prerr_endline ("Predicate is unsupported: " ^ name); assert false | A.True -> mk_ident "True" | A.False -> mk_ident "False" | A.Eq (l,r) | A.NotEq (l,r) -> (* removes the negation *) PT.Appl [mk_ident "eq";mk_ident universe;convert_term l;convert_term r] in build_ctx_for_arities universally (List.map (fun x -> (x,0)) (collect_fv_from_atom a)) (aux a) ;; let collect_arities atom ctx = let atoms = atom::(List.map atom_of_formula ctx) in HExtlib.list_uniq (List.sort (fun (a,_) (b,_) -> compare a b) (List.flatten (List.map collect_arities_from_atom atoms))) ;; let assert_formulae_is_1eq_negated f = let atom = atom_of_formula f in match atom with | A.Eq (l,r) -> failwith "Negated formula is not negated" | A.NotEq (l,r) -> () | _ -> failwith "Not a unit equality formula" ;; let rec convert_formula fv no_arities context f = let atom = atom_of_formula f in let t = convert_atom (fv = []) atom in let rec build_ctx n = function | [] -> t | hp::tl -> PT.Binder (`Forall, (mk_ident ("H" ^ string_of_int n), Some (convert_formula [] true [] hp)), build_ctx (n+1) tl) in let arities = if no_arities then [] else collect_arities atom context in build_ctx_for_arities true arities (build_ctx 0 context) ;; let check_if_atom_is_negative = function | A.True | A.False | A.Proposition _ | A.Predicate _ -> assert false | A.Eq _ -> false | A.NotEq _ -> true ;; let check_if_formula_is_negative = function | A.Disjunction _ -> assert false | A.NegAtom a -> not (check_if_atom_is_negative a) | A.Atom a -> check_if_atom_is_negative a ;; let convert_ast statements context = function | A.Comment s -> let s = String.sub s 1 (String.length s - 1) in let s = if s.[String.length s - 1] = '\n' then String.sub s 0 (String.length s - 1) else s in statements @ [GA.Comment (floc,GA.Note (floc,s))], context | A.Inclusion (s,_) -> statements @ [ GA.Comment ( floc, GA.Note ( floc,"Inclusion of: " ^ s))], context | A.AnnotatedFormula (name,kind,f,_,_) -> match kind with | A.Axiom | A.Hypothesis -> statements, f::context | A.Negated_conjecture when not (check_if_formula_is_negative f) -> statements, f::context | A.Negated_conjecture -> assert_formulae_is_1eq_negated f; let fv = collect_fv_from_formulae f in (* if fv <> [] then prerr_endline ("FREE VARIABLES: " ^ String.concat "," fv); *) let f = PT.Binder (`Forall, (mk_ident universe,Some (PT.Sort `Set)), convert_formula fv false context f) in let o = PT.Theorem (`Theorem,name,f,None) in statements @ [ GA.Executable(floc,GA.Command(floc,GA.Obj(floc,o))); GA.Executable(floc,GA.Tactical(floc, GA.Tactic(floc, GA.Intros (floc,None,[])),Some (GA.Dot(floc))))] @ (if fv <> [] then (List.flatten (List.map (fun _ -> [GA.Executable(floc,GA.Tactical(floc, GA.Tactic(floc, GA.Exists floc),Some (GA.Branch floc))); GA.Executable(floc,GA.Tactical(floc, GA.Pos (floc,[2]),None))]) fv)) else [])@ [GA.Executable(floc,GA.Tactical(floc, GA.Tactic(floc, GA.Auto (floc,["paramodulation","";"timeout",string_of_int !paramod_timeout])), Some (GA.Dot(floc)))); GA.Executable(floc,GA.Tactical(floc, GA.Try(floc, GA.Tactic (floc, GA.Assumption floc)), Some (GA.Dot(floc)))) ]@ (if fv <> [] then (List.flatten (List.map (fun _ -> [GA.Executable(floc,GA.Tactical(floc, GA.Shift floc, None)); GA.Executable(floc,GA.Tactical(floc, GA.Skip floc,Some (GA.Merge floc)))]) fv)) else [])@ [GA.Executable(floc,GA.Command(floc, GA.Print(floc,"proofterm"))); GA.Executable(floc,GA.Command(floc, GA.Qed(floc)))], context | A.Definition | A.Lemma | A.Theorem | A.Conjecture | A.Lemma_conjecture | A.Plain | A.Unknown -> assert false ;; (* HELPERS *) let resolve ~tptppath s = let resolved_name = if Filename.check_suffix s ".p" then (assert (String.length s > 5); let prefix = String.sub s 0 3 in tptppath ^ "/Problems/" ^ prefix ^ "/" ^ s) else tptppath ^ "/" ^ s in if HExtlib.is_regular resolved_name then resolved_name else begin prerr_endline ("Unable to find " ^ s ^ " (" ^ resolved_name ^ ")"); exit 1 end ;; (* MAIN *) let tptp2grafite ?(timeout=600) ?raw_preamble ~tptppath ~filename () = paramod_timeout := timeout; let rec aux = function | [] -> [] | ((A.Inclusion (file,_)) as hd) :: tl -> let file = resolve ~tptppath file in let lexbuf = Lexing.from_channel (open_in file) in let statements = Parser.main Lexer.yylex lexbuf in hd :: aux (statements @ tl) | hd::tl -> hd :: aux tl in let statements = aux [A.Inclusion (filename,[])] in let grafite_ast_statements,_ = List.fold_left (fun (st, ctx) f -> let newst, ctx = convert_ast st ctx f in newst, ctx) ([],[]) statements in let pp t = (* ZACK: setting width to 80 will trigger a bug of BoxPp.render_to_string * which will show up using the following command line: * ./tptp2grafite -tptppath ~tassi/TPTP-v3.1.1 GRP170-1 *) let width = max_int in let term_pp content_term = let pres_term = TermContentPres.pp_ast content_term in let dummy_tbl = Hashtbl.create 1 in let markup = CicNotationPres.render dummy_tbl pres_term in let s = BoxPp.render_to_string List.hd width markup in Pcre.substitute ~pat:"\\\\forall [Ha-z][a-z0-9_]*" ~subst:(fun x -> "\n" ^ x) s in CicNotationPp.set_pp_term term_pp; let lazy_term_pp = fun x -> assert false in let obj_pp = CicNotationPp.pp_obj in GrafiteAstPp.pp_statement ~term_pp ~lazy_term_pp ~obj_pp t in let buri = Pcre.replace ~pat:"\\.p$" ("cic:/matita/TPTP/" ^ filename) in let extra_statements_start = [ GA.Executable(floc,GA.Command(floc, GA.Set(floc,"baseuri",buri)))] in let preamble = match raw_preamble with | None -> pp (GA.Executable(floc, GA.Command(floc,GA.Include(floc,"logic/equality.ma")))) | Some s -> s buri in let extra_statements_end = [] in let aliases = [] (*[("eq","cic:/Coq/Init/Logic/eq.ind#xpointer(1/1)"); ("trans_eq","cic:/Coq/Init/Logic/trans_eq.con"); ("eq_ind_r","cic:/Coq/Init/Logic/eq_ind_r.con"); ("eq_ind","cic:/Coq/Init/Logic/eq_ind.con"); ("sym_eq","cic:/Coq/Init/Logic/sym_eq.con"); ("refl_equal","cic:/Coq/Init/Logic/eq.ind#xpointer(1/1/1)")] *) in let s1 = List.map pp extra_statements_start in let s2 = List.map (fun (n,s) -> LexiconAstPp.pp_command (LA.Alias(floc, LA.Ident_alias(n,s))) ^ ".") aliases in let s3 = List.map pp grafite_ast_statements in let s4 = List.map pp extra_statements_end in String.concat "\n" (s1@[preamble]@s2@s3@s4) ;;