* http://cs.unibo.it/helm/.
*)
+(* let _profiler = <:profiler<_profiler>>;; *)
+
(* $Id$ *)
open Utils;;
open Printf;;
+let debug_print s = ();;(*prerr_endline (Lazy.force s);;*)
+
let check_disjoint_invariant subst metasenv msg =
if (List.exists
(fun (i,_,_) -> (Subst.is_in_subst i subst)) metasenv)
let rec is_simple_term = function
| Cic.Appl ((Cic.Meta _)::_) -> false
| Cic.Appl l -> List.for_all is_simple_term l
- | Cic.Meta (i, l) -> check_irl 1 l
+ | Cic.Meta (i, l) -> let l = [] in check_irl 1 l
| Cic.Rel _ -> true
| Cic.Const _ -> true
| Cic.MutInd (_, _, []) -> true
let lookup = Subst.lookup_subst in
let rec occurs_check subst what where =
match where with
- | t when what = t -> true
+ | Cic.Meta(i,_) when i = what -> true
| C.Appl l -> List.exists (occurs_check subst what) l
| C.Meta _ ->
let t = lookup where subst in
in
match s, t with
| s, t when s = t -> subst, menv
+ (* sometimes the same meta has different local contexts; this
+ could create "cyclic" substitutions *)
+ | C.Meta (i, _), C.Meta (j, _) when i=j -> subst, menv
| C.Meta (i, _), C.Meta (j, _)
when (locked locked_menv i) &&(locked locked_menv j) ->
raise
unif subst menv t s
| C.Meta (i, _), C.Meta (j, _) when (i > j) && not (locked locked_menv j) ->
unif subst menv t s
- | C.Meta _, t when occurs_check subst s t ->
+ | C.Meta (i,_), t when occurs_check subst i t ->
raise
(U.UnificationFailure (lazy "Inference.unification.unif"))
| C.Meta (i, l), t when (locked locked_menv i) ->
let profiler4 = HExtlib.profile "P/Inference.unif_simple[filter]"
let unification_aux b metasenv1 metasenv2 context t1 t2 ugraph =
- let metasenv = metasenv1 @ metasenv2 in
+ let metasenv =
+ HExtlib.list_uniq (List.sort Pervasives.compare (metasenv1 @ metasenv2))
+ (* metasenv1 @ metasenv2 *)
+ in
let subst, menv, ug =
if not (is_simple_term t1) || not (is_simple_term t2) then (
debug_print
(lazy
(Printf.sprintf "NOT SIMPLE TERMS: %s %s"
(CicPp.ppterm t1) (CicPp.ppterm t2)));
- raise (CicUnification .UnificationFailure (lazy "Inference.unification.unif"))
+ raise (CicUnification.UnificationFailure (lazy "Inference.unification.unif"))
) else
if b then
(* full unification *)
exception MatchingFailure;;
-let matching1 metasenv1 metasenv2 context t1 t2 ugraph =
+(** matching takes in input the _disjoint_ metasenv of t1 and t2;
+it perform unification in the union metasenv, then check that
+the first metasenv has not changed *)
+let matching metasenv1 metasenv2 context t1 t2 ugraph =
try
unification_aux false metasenv1 metasenv2 context t1 t2 ugraph
with
- CicUnification .UnificationFailure _ ->
+ CicUnification.UnificationFailure _ ->
raise MatchingFailure
;;
-let unification = unification_aux true
-;;
-
-(** matching takes in input the _disjoint_ metasenv of t1 and t2;
-it perform unification in the union metasenv, then check that
-the first metasenv has not changed *)
-
-let matching = matching1;;
-
-let check_eq context msg eq =
- let w, proof, (eq_ty, left, right, order), metas = eq in
- if not (fst (CicReduction.are_convertible ~metasenv:metas context eq_ty
- (fst (CicTypeChecker.type_of_aux' metas context left CicUniv.empty_ugraph))
- CicUniv.empty_ugraph))
- then
- begin
- prerr_endline msg;
- assert false;
- end
- else ()
-;;
-
-let find_equalities context proof =
- let module C = Cic in
- let module S = CicSubstitution in
- let module T = CicTypeChecker in
- let eq_uri = LibraryObjects.eq_URI () in
- let newmeta = ProofEngineHelpers.new_meta_of_proof ~proof in
- let ok_types ty menv =
- List.for_all (fun (_, _, mt) -> mt = ty) menv
- in
- let rec aux index newmeta = function
- | [] -> [], newmeta
- | (Some (_, C.Decl (term)))::tl ->
- let do_find context term =
- match term with
- | C.Prod (name, s, t) ->
- let (head, newmetas, args, newmeta) =
- ProofEngineHelpers.saturate_term newmeta []
- context (S.lift index term) 0
- in
- let p =
- if List.length args = 0 then
- C.Rel index
- else
- C.Appl ((C.Rel index)::args)
- in (
- match head with
- | C.Appl [C.MutInd (uri, _, _); ty; t1; t2]
- when (UriManager.eq uri eq_uri) && (ok_types ty newmetas) ->
- debug_print
- (lazy
- (Printf.sprintf "OK: %s" (CicPp.ppterm term)));
- let o = !Utils.compare_terms t1 t2 in
- let stat = (ty,t1,t2,o) in
- let w = compute_equality_weight stat in
- let proof = Equality.Exact p in
- let e = Equality.mk_equality (w, proof, stat, newmetas) in
- Some e, (newmeta+1)
- | _ -> None, newmeta
- )
- | C.Appl [C.MutInd (uri, _, _); ty; t1; t2]
- when UriManager.eq uri eq_uri ->
- let ty = S.lift index ty in
- let t1 = S.lift index t1 in
- let t2 = S.lift index t2 in
- let o = !Utils.compare_terms t1 t2 in
- let stat = (ty,t1,t2,o) in
- let w = compute_equality_weight stat in
- let p = C.Rel index in
- let proof = Equality.Exact p in
- let e = Equality.mk_equality (w, proof,stat,[]) in
- Some e, (newmeta+1)
- | _ -> None, newmeta
- in (
- match do_find context term with
- | Some p, newmeta ->
- let tl, newmeta' = (aux (index+1) newmeta tl) in
- if newmeta' < newmeta then
- prerr_endline "big trouble";
- (index, p)::tl, newmeta' (* max???? *)
- | None, _ ->
- aux (index+1) newmeta tl
- )
- | _::tl ->
- aux (index+1) newmeta tl
- in
- let il, maxm = aux 1 newmeta context in
- let indexes, equalities = List.split il in
- (* ignore (List.iter (check_eq context "find") equalities); *)
- indexes, equalities, maxm
-;;
-
-
-(*
-let equations_blacklist =
- List.fold_left
- (fun s u -> UriManager.UriSet.add (UriManager.uri_of_string u) s)
- UriManager.UriSet.empty [
- "cic:/Coq/Init/Logic/eq.ind#xpointer(1/1/1)";
- "cic:/Coq/Init/Logic/trans_eq.con";
- "cic:/Coq/Init/Logic/f_equal.con";
- "cic:/Coq/Init/Logic/f_equal2.con";
- "cic:/Coq/Init/Logic/f_equal3.con";
- "cic:/Coq/Init/Logic/f_equal4.con";
- "cic:/Coq/Init/Logic/f_equal5.con";
- "cic:/Coq/Init/Logic/sym_eq.con";
- "cic:/Coq/Init/Logic/eq_ind.con";
- "cic:/Coq/Init/Logic/eq_ind_r.con";
- "cic:/Coq/Init/Logic/eq_rec.con";
- "cic:/Coq/Init/Logic/eq_rec_r.con";
- "cic:/Coq/Init/Logic/eq_rect.con";
- "cic:/Coq/Init/Logic/eq_rect_r.con";
- "cic:/Coq/Logic/Eqdep/UIP.con";
- "cic:/Coq/Logic/Eqdep/UIP_refl.con";
- "cic:/Coq/Logic/Eqdep_dec/eq2eqT.con";
- "cic:/Coq/ZArith/Zcompare/rename.con";
- (* ALB !!!! questo e` imbrogliare, ma x ora lo lasciamo cosi`...
- perche' questo cacchio di teorema rompe le scatole :'( *)
- "cic:/Rocq/SUBST/comparith/mult_n_2.con";
-
- "cic:/matita/logic/equality/eq_f.con";
- "cic:/matita/logic/equality/eq_f2.con";
- "cic:/matita/logic/equality/eq_rec.con";
- "cic:/matita/logic/equality/eq_rect.con";
- ]
-;;
-*)
-let equations_blacklist = UriManager.UriSet.empty;;
-
-
-let find_library_equalities dbd context status maxmeta =
- let module C = Cic in
- let module S = CicSubstitution in
- let module T = CicTypeChecker in
- let blacklist =
- List.fold_left
- (fun s u -> UriManager.UriSet.add u s)
- equations_blacklist
- [eq_XURI (); sym_eq_URI (); trans_eq_URI (); eq_ind_URI ();
- eq_ind_r_URI ()]
- in
- let candidates =
- List.fold_left
- (fun l uri ->
- if UriManager.UriSet.mem uri blacklist then
- l
- else
- let t = CicUtil.term_of_uri uri in
- let ty, _ =
- CicTypeChecker.type_of_aux' [] context t CicUniv.empty_ugraph
- in
- (uri, t, ty)::l)
- []
- (let t1 = Unix.gettimeofday () in
- let eqs = (MetadataQuery.equations_for_goal ~dbd status) in
- let t2 = Unix.gettimeofday () in
- (debug_print
- (lazy
- (Printf.sprintf "Tempo di MetadataQuery.equations_for_goal: %.9f\n"
- (t2 -. t1))));
- eqs)
- in
- let eq_uri1 = eq_XURI ()
- and eq_uri2 = LibraryObjects.eq_URI () in
- let iseq uri =
- (UriManager.eq uri eq_uri1) || (UriManager.eq uri eq_uri2)
- in
- let ok_types ty menv =
- List.for_all (fun (_, _, mt) -> mt = ty) menv
- in
- let rec has_vars = function
- | C.Meta _ | C.Rel _ | C.Const _ -> false
- | C.Var _ -> true
- | C.Appl l -> List.exists has_vars l
- | C.Prod (_, s, t) | C.Lambda (_, s, t)
- | C.LetIn (_, s, t) | C.Cast (s, t) ->
- (has_vars s) || (has_vars t)
- | _ -> false
- in
- let rec aux newmeta = function
- | [] -> [], newmeta
- | (uri, term, termty)::tl ->
- debug_print
- (lazy
- (Printf.sprintf "Examining: %s (%s)"
- (CicPp.ppterm term) (CicPp.ppterm termty)));
- let res, newmeta =
- match termty with
- | C.Prod (name, s, t) when not (has_vars termty) ->
- let head, newmetas, args, newmeta =
- ProofEngineHelpers.saturate_term newmeta [] context termty 0
- in
- let p =
- if List.length args = 0 then
- term
- else
- C.Appl (term::args)
- in (
- match head with
- | C.Appl [C.MutInd (uri, _, _); ty; t1; t2]
- when (iseq uri) && (ok_types ty newmetas) ->
- debug_print
- (lazy
- (Printf.sprintf "OK: %s" (CicPp.ppterm term)));
- let o = !Utils.compare_terms t1 t2 in
- let stat = (ty,t1,t2,o) in
- let w = compute_equality_weight stat in
- let proof = Equality.Exact p in
- let e = Equality.mk_equality (w, proof, stat, newmetas) in
- Some e, (newmeta+1)
- | _ -> None, newmeta
- )
- | C.Appl [C.MutInd (uri, _, _); ty; t1; t2]
- when iseq uri && not (has_vars termty) ->
- let o = !Utils.compare_terms t1 t2 in
- let stat = (ty,t1,t2,o) in
- let w = compute_equality_weight stat in
- let proof = Equality.Exact term in
- let e = Equality.mk_equality (w, proof, stat, []) in
- Some e, (newmeta+1)
- | _ -> None, newmeta
- in
- match res with
- | Some e ->
- let tl, newmeta' = aux newmeta tl in
- if newmeta' < newmeta then
- prerr_endline "big trouble";
- (uri, e)::tl, newmeta' (* max???? *)
- | None ->
- aux newmeta tl
- in
- let found, maxm = aux maxmeta candidates in
- let uriset, eqlist =
- let mceq = Equality.meta_convertibility_eq in
- (List.fold_left
- (fun (s, l) (u, e) ->
- if List.exists (mceq e) (List.map snd l) then (
- debug_print
- (lazy
- (Printf.sprintf "NO!! %s already there!"
- (Equality.string_of_equality e)));
- (UriManager.UriSet.add u s, l)
- ) else (UriManager.UriSet.add u s, (u, e)::l))
- (UriManager.UriSet.empty, []) found)
- in
- uriset, eqlist, maxm
-;;
-
-
-let find_library_theorems dbd env status equalities_uris =
- let module C = Cic in
- let module S = CicSubstitution in
- let module T = CicTypeChecker in
- let blacklist =
- let refl_equal =
- UriManager.uri_of_string "cic:/Coq/Init/Logic/eq.ind#xpointer(1/1/1)" in
- let s =
- UriManager.UriSet.remove refl_equal
- (UriManager.UriSet.union equalities_uris equations_blacklist)
- in
- List.fold_left
- (fun s u -> UriManager.UriSet.add u s)
- s [eq_XURI () ;sym_eq_URI (); trans_eq_URI (); eq_ind_URI ();
- eq_ind_r_URI ()]
- in
- let metasenv, context, ugraph = env in
- let candidates =
- List.fold_left
- (fun l uri ->
- if UriManager.UriSet.mem uri blacklist then l
- else
- let t = CicUtil.term_of_uri uri in
- let ty, _ = CicTypeChecker.type_of_aux' metasenv context t ugraph in
- (t, ty, [])::l)
- [] (MetadataQuery.signature_of_goal ~dbd status)
- in
- let refl_equal =
- let u = eq_XURI () in
- let t = CicUtil.term_of_uri u in
- let ty, _ = CicTypeChecker.type_of_aux' [] [] t CicUniv.empty_ugraph in
- (t, ty, [])
- in
- refl_equal::candidates
-;;
-
-
-let find_context_hypotheses env equalities_indexes =
- let metasenv, context, ugraph = env in
- let _, res =
- List.fold_left
- (fun (n, l) entry ->
- match entry with
- | None -> (n+1, l)
- | Some _ ->
- if List.mem n equalities_indexes then
- (n+1, l)
- else
- let t = Cic.Rel n in
- let ty, _ =
- CicTypeChecker.type_of_aux' metasenv context t ugraph in
- (n+1, (t, ty, [])::l))
- (1, []) context
- in
- res
+let unification m1 m2 c t1 t2 ug =
+ try
+ unification_aux true m1 m2 c t1 t2 ug
+ with exn ->
+ raise exn
;;
+let get_stats () = "" (*<:show<Inference.>>*) ;;
projects / helm.git / blobdiff