(* $Id$ *)
open Utils;;
+open Printf;;
+let metas_of_proof_time = ref 0.;;
+let metas_of_term_time = ref 0.;;
+(*
+type substitution = Cic.substitution
+let apply_subst = CicMetaSubst.apply_subst
+let apply_subst_metasenv = CicMetaSubst.apply_subst_metasenv
+let ppsubst = CicMetaSubst.ppsubst
+let buildsubst n context t ty = (n,(context,t,ty))
+let flatten_subst subst =
+ List.map
+ (fun (i, (context, term, ty)) ->
+ let context = (*` apply_subst_context subst*) context in
+ let term = apply_subst subst term in
+ let ty = apply_subst subst ty in
+ (i, (context, term, ty))) subst
+let rec lookup_subst meta subst =
+ match meta with
+ | Cic.Meta (i, _) -> (
+ try let _, (_, t, _) = List.find (fun (m, _) -> m = i) subst
+ in lookup_subst t subst
+ with Not_found -> meta
+ )
+ | _ -> meta
+;;
+*)
+
+(* naif version of apply subst; the local context of metas is ignored;
+we assume the substituted term must be lifted according to the nesting
+depth of the meta. Alternatively, ee could used implicit instead of
+metas *)
+
+
+type substitution = (int * Cic.term) list
+
+let apply_subst subst term =
+ let rec aux k t =
+ match t with
+ Cic.Rel _ -> t
+ | Cic.Var (uri,exp_named_subst) ->
+ let exp_named_subst' =
+ List.map (fun (uri, t) -> (uri, aux k t)) exp_named_subst
+ in
+ Cic.Var (uri, exp_named_subst')
+ | Cic.Meta (i, l) ->
+ (try
+ aux k (CicSubstitution.lift k (List.assoc i subst))
+ with Not_found -> t)
+ | Cic.Sort _
+ | Cic.Implicit _ -> t
+ | Cic.Cast (te,ty) -> Cic.Cast (aux k te, aux k ty)
+ | Cic.Prod (n,s,t) -> Cic.Prod (n, aux k s, aux (k+1) t)
+ | Cic.Lambda (n,s,t) -> Cic.Lambda (n, aux k s, aux (k+1) t)
+ | Cic.LetIn (n,s,t) -> Cic.LetIn (n, aux k s, aux (k+1) t)
+ | Cic.Appl [] -> assert false
+ | Cic.Appl l -> Cic.Appl (List.map (aux k) l)
+ | Cic.Const (uri,exp_named_subst) ->
+ let exp_named_subst' =
+ List.map (fun (uri, t) -> (uri, aux k t)) exp_named_subst
+ in
+ if exp_named_subst' != exp_named_subst then
+ Cic.Const (uri, exp_named_subst')
+ else
+ t (* TODO: provare a mantenere il piu' possibile sharing *)
+ | Cic.MutInd (uri,typeno,exp_named_subst) ->
+ let exp_named_subst' =
+ List.map (fun (uri, t) -> (uri, aux k t)) exp_named_subst
+ in
+ Cic.MutInd (uri,typeno,exp_named_subst')
+ | Cic.MutConstruct (uri,typeno,consno,exp_named_subst) ->
+ let exp_named_subst' =
+ List.map (fun (uri, t) -> (uri, aux k t)) exp_named_subst
+ in
+ Cic.MutConstruct (uri,typeno,consno,exp_named_subst')
+ | Cic.MutCase (sp,i,outty,t,pl) ->
+ let pl' = List.map (aux k) pl in
+ Cic.MutCase (sp, i, aux k outty, aux k t, pl')
+ | Cic.Fix (i, fl) ->
+ let len = List.length fl in
+ let fl' =
+ List.map
+ (fun (name, i, ty, bo) -> (name, i, aux k ty, aux (k+len) bo)) fl
+ in
+ Cic.Fix (i, fl')
+ | Cic.CoFix (i, fl) ->
+ let len = List.length fl in
+ let fl' =
+ List.map (fun (name, ty, bo) -> (name, aux k ty, aux (k+len) bo)) fl
+ in
+ Cic.CoFix (i, fl')
+in
+ aux 0 term
+;;
+
+(* naif version of apply_subst_metasenv: we do not apply the
+substitution to the context *)
+
+let apply_subst_metasenv subst metasenv =
+ List.map
+ (fun (n, context, ty) ->
+ (n, context, apply_subst subst ty))
+ (List.filter
+ (fun (i, _, _) -> not (List.mem_assoc i subst))
+ metasenv)
+
+let ppsubst subst =
+ String.concat "\n"
+ (List.map
+ (fun (idx, t) ->
+ sprintf "%d:= %s" idx (CicPp.ppterm t))
+ subst)
+;;
+
+let buildsubst n context t ty = (n,t) ;;
+
+let flatten_subst subst =
+ List.map (fun (i,t) -> i, apply_subst subst t ) subst
+;;
+
+let rec lookup_subst meta subst =
+ match meta with
+ | Cic.Meta (i, _) ->
+ (try
+ lookup_subst (List.assoc i subst) subst
+ with
+ Not_found -> meta)
+ | _ -> meta
+;;
type equality =
int * (* weight *)
Cic.term * (* left side *)
Cic.term * (* right side *)
Utils.comparison) * (* ordering *)
- Cic.metasenv * (* environment for metas *)
- Cic.term list (* arguments *)
+ Cic.metasenv (* environment for metas *)
and proof =
| NoProof (* term is the goal missing a proof *)
- | BasicProof of Cic.term
+ | BasicProof of substitution * Cic.term
| ProofBlock of
- Cic.substitution * UriManager.uri *
+ substitution * UriManager.uri *
(Cic.name * Cic.term) * Cic.term * (Utils.pos * equality) * proof
| ProofGoalBlock of proof * proof
| ProofSymBlock of Cic.term list * proof
| SubProof of Cic.term * int * proof
;;
-
let string_of_equality ?env =
match env with
| None -> (
function
- | w, _, (ty, left, right, o), _, _ ->
+ | w, _, (ty, left, right, o), _ ->
Printf.sprintf "Weight: %d, {%s}: %s =(%s) %s" w (CicPp.ppterm ty)
(CicPp.ppterm left) (string_of_comparison o) (CicPp.ppterm right)
)
| Some (_, context, _) -> (
let names = names_of_context context in
function
- | w, _, (ty, left, right, o), _, _ ->
+ | w, _, (ty, left, right, o), _ ->
Printf.sprintf "Weight: %d, {%s}: %s =(%s) %s" w (CicPp.pp ty names)
(CicPp.pp left names) (string_of_comparison o)
(CicPp.pp right names)
let rec string_of_proof = function
| NoProof -> "NoProof "
- | BasicProof t -> "BasicProof " ^ (CicPp.ppterm t)
+ | BasicProof (s, t) -> "BasicProof " ^
+ (CicPp.ppterm (apply_subst s t))
| SubProof (t, i, p) ->
Printf.sprintf "SubProof(%s, %s, %s)"
(CicPp.ppterm t) (string_of_int i) (string_of_proof p)
| ProofSymBlock _ -> "ProofSymBlock"
- | ProofBlock _ -> "ProofBlock"
+ | ProofBlock (subst, _, _, _ ,_,_) ->
+ "ProofBlock" ^ (ppsubst subst)
| ProofGoalBlock (p1, p2) ->
Printf.sprintf "ProofGoalBlock(%s, %s)"
(string_of_proof p1) (string_of_proof p2)
;;
+let check_disjoint_invariant subst metasenv msg =
+ if (List.exists
+ (fun (i,_,_) -> (List.exists (fun (j,_) -> i=j) subst)) metasenv)
+ then
+ begin
+ prerr_endline ("not disjoint: " ^ msg);
+ assert false
+ end
+;;
+
+(* filter out from metasenv the variables in substs *)
+let filter subst metasenv =
+ List.filter
+ (fun (m, _, _) ->
+ try let _ = List.find (fun (i, _) -> m = i) subst in false
+ with Not_found -> true)
+ metasenv
+;;
+
(* returns an explicit named subst and a list of arguments for sym_eq_URI *)
let build_ens_for_sym_eq sym_eq_URI termlist =
let obj, _ = CicEnvironment.get_obj CicUniv.empty_ugraph sym_eq_URI in
| NoProof ->
Printf.fprintf stderr "WARNING: no proof!\n";
noproof
- | BasicProof term -> term
+ | BasicProof (s,term) -> apply_subst s term
| ProofGoalBlock (proofbit, proof) ->
print_endline "found ProofGoalBlock, going up...";
do_build_goal_proof proofbit proof
| ProofBlock (subst, eq_URI, (name, ty), bo, (pos, eq), eqproof) ->
let t' = Cic.Lambda (name, ty, bo) in
let proof' =
- let _, proof', _, _, _ = eq in
+ let _, proof', _, _ = eq in
do_build_proof proof'
in
let eqproof = do_build_proof eqproof in
- let _, _, (ty, what, other, _), menv', args' = eq in
+ let _, _, (ty, what, other, _), menv' = eq in
let what, other =
if pos = Utils.Left then what, other else other, what
in
- CicMetaSubst.apply_subst subst
+ apply_subst subst
(Cic.Appl [Cic.Const (eq_URI, []); ty;
what; t'; eqproof; other; proof'])
| SubProof (term, meta_index, proof) ->
SubProof (term, meta_index, replace_proof newproof p)
| p -> p
in
- do_build_proof proof
+ do_build_proof proof
;;
-
let rec metas_of_term = function
| Cic.Meta (i, c) -> [i]
| Cic.Var (_, ens)
| _ -> []
;;
+let rec metas_of_proof p =
+ if Utils.debug then
+ let t1 = Unix.gettimeofday () in
+ let res = metas_of_term (build_proof_term p) in
+ let t2 = Unix.gettimeofday () in
+ metas_of_proof_time := !metas_of_proof_time +. (t2 -. t1);
+ res
+ else
+ metas_of_term (build_proof_term p)
+;;
+
exception NotMetaConvertible;;
let meta_convertibility_eq eq1 eq2 =
- let _, _, (ty, left, right, _), _, _ = eq1
- and _, _, (ty', left', right', _), _, _ = eq2 in
+ let _, _, (ty, left, right, _), _ = eq1
+ and _, _, (ty', left', right', _), _ = eq2 in
if ty <> ty' then
false
else if (left = left') && (right = right') then
| _ -> false
;;
-
-let lookup_subst meta subst =
- match meta with
- | Cic.Meta (i, _) -> (
- try let _, (_, t, _) = List.find (fun (m, _) -> m = i) subst in t
- with Not_found -> meta
- )
- | _ -> assert false
+let locked menv i =
+ List.exists (fun (j,_,_) -> i = j) menv
;;
-
-let unification_simple metasenv context t1 t2 ugraph =
+let unification_simple locked_menv metasenv context t1 t2 ugraph =
+ let debug_print x = prerr_endline (Lazy.force x) in
let module C = Cic in
let module M = CicMetaSubst in
let module U = CicUnification in
let rec unif subst menv s t =
let s = match s with C.Meta _ -> lookup s subst | _ -> s
and t = match t with C.Meta _ -> lookup t subst | _ -> t
+
in
match s, t with
| s, t when s = t -> subst, menv
- | C.Meta (i, _), C.Meta (j, _) when i > j ->
+ | C.Meta (i, _), C.Meta (j, _)
+ when (locked locked_menv i) &&(locked locked_menv j) ->
+ raise
+ (U.UnificationFailure (lazy "Inference.unification.unif"))
+ | C.Meta (i, _), C.Meta (j, _) when (locked locked_menv i) ->
+ 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 ->
raise
(U.UnificationFailure (lazy "Inference.unification.unif"))
+ | C.Meta (i, l), t when (locked locked_menv i) ->
+ raise
+ (U.UnificationFailure (lazy "Inference.unification.unif"))
| C.Meta (i, l), t -> (
try
let _, _, ty = CicUtil.lookup_meta i menv in
- let subst =
- if not (List.mem_assoc i subst) then (i, (context, t, ty))::subst
- else subst
- in
+ assert (not (List.mem_assoc i subst));
+ let subst = (buildsubst i context t ty)::subst in
let menv = menv in (* List.filter (fun (m, _, _) -> i <> m) menv in *)
subst, menv
with CicUtil.Meta_not_found m ->
let names = names_of_context context in
- debug_print
- (lazy
+ (*debug_print
+ (lazy*) prerr_endline
(Printf.sprintf "Meta_not_found %d!: %s %s\n%s\n\n%s" m
(CicPp.pp t1 names) (CicPp.pp t2 names)
- (print_metasenv menv) (print_metasenv metasenv)));
+ (print_metasenv menv) (print_metasenv metasenv));
assert false
)
| _, C.Meta _ -> unif subst menv t s
raise (U.UnificationFailure (lazy "Inference.unification.unif"))
in
let subst, menv = unif [] metasenv t1 t2 in
- let menv =
- List.filter
- (fun (m, _, _) ->
- try let _ = List.find (fun (i, _) -> m = i) subst in false
- with Not_found -> true)
- menv
- in
+ let menv = filter subst menv in
List.rev subst, menv, ugraph
;;
+let profiler = HExtlib.profile "P/Inference.unif_simple[flatten]"
+let profiler2 = HExtlib.profile "P/Inference.unif_simple[flatten_fast]"
+let profiler3 = HExtlib.profile "P/Inference.unif_simple[resolve_meta]"
+let profiler4 = HExtlib.profile "P/Inference.unif_simple[filter]"
-let unification metasenv context t1 t2 ugraph =
+let unification_aux b metasenv1 metasenv2 context t1 t2 ugraph =
+ let metasenv = 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)));
- CicUnification.fo_unif metasenv context t1 t2 ugraph
+ raise (CicUnification .UnificationFailure (lazy "Inference.unification.unif"))
) else
- unification_simple metasenv context t1 t2 ugraph
- in
- let rec fix_term = function
- | (Cic.Meta (i, l) as t) ->
- let t' = lookup_subst t subst in
- if t <> t' then fix_term t' else t
- | Cic.Appl l -> Cic.Appl (List.map fix_term l)
- | t -> t
+ if b then
+ (* full unification *)
+ unification_simple [] metasenv context t1 t2 ugraph
+ else
+ (* matching: metasenv1 is locked *)
+ unification_simple metasenv1 metasenv context t1 t2 ugraph
in
- let rec fix_subst = function
- | [] -> []
- | (i, (c, t, ty))::tl -> (i, (c, fix_term t, fix_term ty))::(fix_subst tl)
+ if Utils.debug_res then
+ ignore(check_disjoint_invariant subst menv "unif");
+ (* let flatten subst =
+ List.map
+ (fun (i, (context, term, ty)) ->
+ let context = apply_subst_context subst context in
+ let term = apply_subst subst term in
+ let ty = apply_subst subst ty in
+ (i, (context, term, ty))) subst
in
- fix_subst subst, menv, ug
+ let flatten subst = profiler.HExtlib.profile flatten subst in
+ let subst = flatten subst in *)
+ subst, menv, ug
;;
-
-let unification = CicUnification.fo_unif;;
-
exception MatchingFailure;;
-
-(*
-let matching_simple metasenv context t1 t2 ugraph =
- let module C = Cic in
- let module M = CicMetaSubst in
- let module U = CicUnification in
- let lookup meta subst =
- match meta with
- | C.Meta (i, _) -> (
- try let _, (_, t, _) = List.find (fun (m, _) -> m = i) subst in t
- with Not_found -> meta
- )
- | _ -> assert false
- in
- let rec do_match subst menv s t =
- match s, t with
- | s, t when s = t -> subst, menv
- | s, C.Meta (i, l) ->
- let filter_menv i menv =
- List.filter (fun (m, _, _) -> i <> m) menv
- in
- let subst, menv =
- let value = lookup t subst in
- match value with
- | value when value = t ->
- let _, _, ty = CicUtil.lookup_meta i menv in
- (i, (context, s, ty))::subst, filter_menv i menv
- | value when value <> s ->
- raise MatchingFailure
- | value -> do_match subst menv s value
- in
- subst, menv
- | C.Appl ls, C.Appl lt -> (
- try
- List.fold_left2
- (fun (subst, menv) s t -> do_match subst menv s t)
- (subst, menv) ls lt
- with Invalid_argument _ ->
- raise MatchingFailure
- )
- | _, _ ->
- raise MatchingFailure
- in
- let subst, menv = do_match [] metasenv t1 t2 in
- subst, menv, ugraph
+let matching1 metasenv1 metasenv2 context t1 t2 ugraph =
+ try
+ unification_aux false metasenv1 metasenv2 context t1 t2 ugraph
+ with
+ CicUnification .UnificationFailure _ ->
+ raise MatchingFailure
;;
-*)
-
-let matching metasenv context t1 t2 ugraph =
- try
- let subst, metasenv, ugraph =
-try
- unification metasenv context t1 t2 ugraph
-with CicUtil.Meta_not_found _ as exn ->
- Printf.eprintf "t1 == %s\nt2 = %s\nmetasenv == %s\n%!"
- (CicPp.ppterm t1) (CicPp.ppterm t2) (CicMetaSubst.ppmetasenv [] metasenv);
- raise exn
- in
- let t' = CicMetaSubst.apply_subst subst t1 in
- if not (meta_convertibility t1 t') then
- raise MatchingFailure
- else
- let metas = metas_of_term t1 in
- let fix_subst = function
- | (i, (c, Cic.Meta (j, lc), ty)) when List.mem i metas ->
- (j, (c, Cic.Meta (i, lc), ty))
- | s -> s
- in
- let subst = List.map fix_subst subst in
- subst, metasenv, ugraph
- with
- | CicUnification.UnificationFailure _
- | CicUnification.Uncertain _ ->
- 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
(lazy
(Printf.sprintf "OK: %s" (CicPp.ppterm term)));
let o = !Utils.compare_terms t1 t2 in
- let w = compute_equality_weight ty t1 t2 in
- let proof = BasicProof p in
- let e = (w, proof, (ty, t1, t2, o), newmetas, args) in
+ let stat = (ty,t1,t2,o) in
+ let w = compute_equality_weight stat in
+ let proof = BasicProof ([],p) in
+ let e = (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 t1 = S.lift index t1
- and t2 = S.lift index t2 in
+ 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 w = compute_equality_weight ty t1 t2 in
- let e = (w, BasicProof (C.Rel index), (ty, t1, t2, o), [], []) in
+ let stat = (ty,t1,t2,o) in
+ let w = compute_equality_weight stat in
+ let e = (w, BasicProof ([],(C.Rel index)), stat, []) in
Some e, (newmeta+1)
| _ -> None, newmeta
in (
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
;;
| C.LetIn (_, s, t) | C.Cast (s, t) ->
(has_vars s) || (has_vars t)
| _ -> false
- in
+ in
let rec aux newmeta = function
| [] -> [], newmeta
| (uri, term, termty)::tl ->
(lazy
(Printf.sprintf "OK: %s" (CicPp.ppterm term)));
let o = !Utils.compare_terms t1 t2 in
- let w = compute_equality_weight ty t1 t2 in
- let proof = BasicProof p in
- let e = (w, proof, (ty, t1, t2, o), newmetas, args) in
+ let stat = (ty,t1,t2,o) in
+ let w = compute_equality_weight stat in
+ let proof = BasicProof ([],p) in
+ let e = (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 w = compute_equality_weight ty t1 t2 in
- let e = (w, BasicProof term, (ty, t1, t2, o), [], []) in
+ let stat = (ty,t1,t2,o) in
+ let w = compute_equality_weight stat in
+ let e = (w, BasicProof ([],term), stat, []) in
Some e, (newmeta+1)
| _ -> None, newmeta
in
res
;;
-
+(*
let fix_metas_old newmeta (w, p, (ty, left, right, o), menv, args) =
let table = Hashtbl.create (List.length args) in
let ty = repl ty
and left = repl left
and right = repl right in
- let metas = (metas_of_term left) @ (metas_of_term right) @ (metas_of_term ty) in
+ let metas =
+ (metas_of_term left) @
+ (metas_of_term right) @
+ (metas_of_term ty) @ (metas_of_proof p) in
let menv' = List.filter (fun (i, _, _) -> List.mem i metas) menv' in
let newargs =
List.filter
(Hashtbl.copy table)
in
let rec fix_proof = function
- | NoProof -> NoProof
+ | NoProof -> NoProof
| BasicProof term -> BasicProof (repl term)
| ProofBlock (subst, eq_URI, namety, bo, (pos, eq), p) ->
let subst' =
let neweq = (w, fix_proof p, (ty, left, right, o), menv', newargs) in
(newmeta +1, neweq)
;;
-
+*)
let relocate newmeta menv =
let subst, metasenv, newmeta =
List.fold_right
- (fun (i, context, ty) (subst, menv, maxmeta) ->
- let irl=CicMkImplicit.identity_relocation_list_for_metavariable context in
- let newsubst = (i, (context, (Cic.Meta (maxmeta, irl)), ty)) in
+ (fun (i, context, ty) (subst, menv, maxmeta) ->
+ let irl = [] (*
+ CicMkImplicit.identity_relocation_list_for_metavariable context *)
+ in
+ let newsubst = buildsubst i context (Cic.Meta(maxmeta,irl)) ty in
let newmeta = maxmeta, context, ty in
newsubst::subst, newmeta::menv, maxmeta+1)
menv ([], [], newmeta+1)
in
- let metasenv = CicMetaSubst.apply_subst_metasenv subst metasenv in
- let subst =
- List.map
- (fun (i, (context, term, ty)) ->
- let context = CicMetaSubst.apply_subst_context subst context in
- let term = CicMetaSubst.apply_subst subst term in
- let ty = CicMetaSubst.apply_subst subst ty in
- (i, (context, term, ty))) subst in
+ let metasenv = apply_subst_metasenv subst metasenv in
+ let subst = flatten_subst subst in
subst, metasenv, newmeta
-let fix_metas newmeta (w, p, (ty, left, right, o), menv, args) =
+let fix_metas newmeta (w, p, (ty, left, right, o), menv) =
+ (*
+ let metas = (metas_of_term left)@(metas_of_term right)
+ @(metas_of_term ty)@(metas_of_proof p) in
+ let menv = List.filter (fun (i, _, _) -> List.mem i metas) menv in
+ *)
(* debug
let _ , eq =
fix_metas_old newmeta (w, p, (ty, left, right, o), menv, args) in
prerr_endline (string_of_equality eq); *)
let subst, metasenv, newmeta = relocate newmeta menv in
- let ty = CicMetaSubst.apply_subst subst ty in
- let left = CicMetaSubst.apply_subst subst left in
- let right = CicMetaSubst.apply_subst subst right in
- let args = List.map (CicMetaSubst.apply_subst subst) args in
- let rec fix_proof = function
+(*
+ if newmeta > 2839 then
+ begin
+ prerr_endline (CicPp.ppterm left ^ " = " ^ CicPp.ppterm right);
+ prerr_endline (CicMetaSubst.ppsubst subst);
+ prerr_endline (CicMetaSubst.ppmetasenv [] metasenv);
+ assert false;
+ end;
+*)
+ let ty = apply_subst subst ty in
+ let left = apply_subst subst left in
+ let right = apply_subst subst right in
+ let fix_proof = function
| NoProof -> NoProof
- | BasicProof term -> BasicProof (CicMetaSubst.apply_subst subst term)
+ | BasicProof (subst',term) -> BasicProof (subst@subst',term)
| ProofBlock (subst', eq_URI, namety, bo, (pos, eq), p) ->
- ProofBlock (subst' @ subst, eq_URI, namety, bo, (pos, eq), p)
+ (*
+ let newsubst =
+ List.map
+ (fun (i, (context, term, ty)) ->
+ let context = apply_subst_context subst context in
+ let term = apply_subst subst term in
+ let ty = apply_subst subst ty in
+ (i, (context, term, ty))) subst' in *)
+ ProofBlock (subst@subst', eq_URI, namety, bo, (pos, eq), p)
| p -> assert false
in
- let metas = (metas_of_term left)@(metas_of_term right)@(metas_of_term ty) in
+ let p = fix_proof p in
+ (*
+ let metas = (metas_of_term left)@(metas_of_term right)
+ @(metas_of_term ty)@(metas_of_proof p) in
let metasenv = List.filter (fun (i, _, _) -> List.mem i metas) metasenv in
- let eq = (w, fix_proof p, (ty, left, right, o), metasenv, args) in
+ *)
+ let eq = (w, p, (ty, left, right, o), metasenv) in
(* debug prerr_endline (string_of_equality eq); *)
- newmeta, eq
+ newmeta+1, eq
let term_is_equality term =
let iseq uri = UriManager.eq uri (LibraryObjects.eq_URI ()) in
match term with
| Cic.Appl [Cic.MutInd (uri, _, _); ty; t1; t2] when iseq uri ->
let o = !Utils.compare_terms t1 t2 in
- let w = compute_equality_weight ty t1 t2 in
- let e = (w, BasicProof proof, (ty, t1, t2, o), [], []) in
+ let stat = (ty,t1,t2,o) in
+ let w = compute_equality_weight stat in
+ let e = (w, BasicProof ([],proof), stat, []) in
e
| _ ->
raise TermIsNotAnEquality
type environment = Cic.metasenv * Cic.context * CicUniv.universe_graph;;
let is_weak_identity (metasenv, context, ugraph) = function
- | (_, _, (ty, left, right, _), menv, _) ->
+ | (_, _, (ty, left, right, _), menv) ->
(left = right ||
(meta_convertibility left right))
(* the test below is not a good idea since it stops
;;
let is_identity (metasenv, context, ugraph) = function
- | (_, _, (ty, left, right, _), menv, _) ->
+ | (_, _, (ty, left, right, _), menv) ->
(left = right ||
(* (meta_convertibility left right)) *)
(fst (CicReduction.are_convertible
let term_of_equality equality =
- let _, _, (ty, left, right, _), menv, args = equality in
+ let _, _, (ty, left, right, _), menv = equality in
let eq i = function Cic.Meta (j, _) -> i = j | _ -> false in
- let argsno = List.length args in
+ let argsno = List.length menv in
let t =
CicSubstitution.lift argsno
(Cic.Appl [Cic.MutInd (LibraryObjects.eq_URI (), 0, []); ty; left; right])
in
snd (
List.fold_right
- (fun a (n, t) ->
- match a with
- | Cic.Meta (i, _) ->
- let name = Cic.Name ("X" ^ (string_of_int n)) in
- let _, _, ty = CicUtil.lookup_meta i menv in
- let t =
- ProofEngineReduction.replace
- ~equality:eq ~what:[i]
- ~with_what:[Cic.Rel (argsno - (n - 1))] ~where:t
- in
- (n-1, Cic.Prod (name, ty, t))
- | _ -> assert false)
- args (argsno, t))
+ (fun (i,_,ty) (n, t) ->
+ let name = Cic.Name ("X" ^ (string_of_int n)) in
+ let ty = CicSubstitution.lift (n-1) ty in
+ let t =
+ ProofEngineReduction.replace
+ ~equality:eq ~what:[i]
+ ~with_what:[Cic.Rel (argsno - (n - 1))] ~where:t
+ in
+ (n-1, Cic.Prod (name, ty, t)))
+ menv (argsno, t))
;;
projects / helm.git / blobdiff