let rec debug_aux t i =
let module C = Cic in
let module U = UriManager in
- CicPp.ppobj (C.Variable ("DEBUG", None, t, [])) ^ "\n" ^ i
+ CicPp.ppobj (C.Variable ("DEBUG", None, t, [], [])) ^ "\n" ^ i
in
if !fdebug = 0 then
- begin
- print_endline (s ^ "\n" ^ List.fold_right debug_aux (t::env) "") ;
- flush stdout
- end
+ prerr_endline (s ^ "\n" ^ List.fold_right debug_aux (t::env) "")
;;
module type Strategy =
CicSubstitution.lift m (RS.from_ens (List.assq uri ens))
else
let params =
- (match CicEnvironment.get_obj uri with
+ let o,_ =
+ CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
+ in
+ (match o with
C.Constant _ -> raise ReferenceToConstant
- | C.Variable (_,_,_,params) -> params
+ | C.Variable (_,_,_,params,_) -> params
| C.CurrentProof _ -> raise ReferenceToCurrentProof
| C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
)
in
C.Meta (i, l')
| C.Sort _ as t -> t
- | C.Implicit as t -> t
+ | C.Implicit _ as t -> t
| C.Cast (te,ty) -> C.Cast (unwind_aux m te, unwind_aux m ty) (*CSC ???*)
| C.Prod (n,s,t) -> C.Prod (n, unwind_aux m s, unwind_aux (m + 1) t)
| C.Lambda (n,s,t) -> C.Lambda (n, unwind_aux m s, unwind_aux (m + 1) t)
| C.Appl l -> C.Appl (List.map (unwind_aux m) l)
| C.Const (uri,exp_named_subst) ->
let params =
- (match CicEnvironment.get_obj uri with
- C.Constant (_,_,_,params) -> params
+ let o,_ =
+ CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
+ in
+ (match o with
+ C.Constant (_,_,_,params,_) -> params
| C.Variable _ -> raise ReferenceToVariable
- | C.CurrentProof (_,_,_,_,params) -> params
+ | C.CurrentProof (_,_,_,_,params,_) -> params
| C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
)
in
C.Const (uri,exp_named_subst')
| C.MutInd (uri,i,exp_named_subst) ->
let params =
- (match CicEnvironment.get_obj uri with
+ let o,_ =
+ CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
+ in
+ (match o with
C.Constant _ -> raise ReferenceToConstant
| C.Variable _ -> raise ReferenceToVariable
| C.CurrentProof _ -> raise ReferenceToCurrentProof
- | C.InductiveDefinition (_,params,_) -> params
+ | C.InductiveDefinition (_,params,_,_) -> params
)
in
let exp_named_subst' =
C.MutInd (uri,i,exp_named_subst')
| C.MutConstruct (uri,i,j,exp_named_subst) ->
let params =
- (match CicEnvironment.get_obj uri with
+ let o,_ =
+ CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
+ in
+ (match o with
C.Constant _ -> raise ReferenceToConstant
| C.Variable _ -> raise ReferenceToVariable
| C.CurrentProof _ -> raise ReferenceToCurrentProof
- | C.InductiveDefinition (_,params,_) -> params
+ | C.InductiveDefinition (_,params,_,_) -> params
)
in
let exp_named_subst' =
unwind' 0
;;
- let reduce context : config -> Cic.term =
+ let reduce ?(subst = []) context : config -> Cic.term =
let module C = Cic in
let module S = CicSubstitution in
let rec reduce =
if List.exists (function (uri',_) -> UriManager.eq uri' uri) ens then
reduce (0, [], [], RS.from_ens (List.assq uri ens), s)
else
- (match CicEnvironment.get_obj uri with
+ ( let o,_ =
+ CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
+ in
+ match o with
C.Constant _ -> raise ReferenceToConstant
| C.CurrentProof _ -> raise ReferenceToCurrentProof
| C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
- | C.Variable (_,None,_,_) ->
+ | C.Variable (_,None,_,_,_) ->
let t' = unwind k e ens t in
if s = [] then t' else
C.Appl (t'::(RS.from_stack_list ~unwind s))
- | C.Variable (_,Some body,_,_) ->
+ | C.Variable (_,Some body,_,_,_) ->
let ens' = push_exp_named_subst k e ens exp_named_subst in
reduce (0, [], ens', body, s)
)
- | (k, e, ens, (C.Meta _ as t), s) ->
- let t' = unwind k e ens t in
- if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
+ | (k, e, ens, (C.Meta (n,l) as t), s) ->
+ (try
+ let (_, term,_) = CicUtil.lookup_subst n subst in
+ reduce (k, e, ens,CicSubstitution.lift_meta l term,s)
+ with CicUtil.Subst_not_found _ ->
+ let t' = unwind k e ens t in
+ if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s)))
| (k, e, _, (C.Sort _ as t), s) -> t (* s should be empty *)
- | (k, e, _, (C.Implicit as t), s) -> t (* s should be empty *)
+ | (k, e, _, (C.Implicit _ as t), s) -> t (* s should be empty *)
| (k, e, ens, (C.Cast (te,ty) as t), s) ->
reduce (k, e, ens, te, s) (* s should be empty *)
| (k, e, ens, (C.Prod _ as t), s) ->
C.Appl (List.append (List.map (unwind k e ens) l) s)
*)
| (k, e, ens, (C.Const (uri,exp_named_subst) as t), s) ->
- (match CicEnvironment.get_obj uri with
- C.Constant (_,Some body,_,_) ->
+ (let o,_ =
+ CicEnvironment.get_cooked_obj CicUniv.empty_ugraph uri
+ in
+ match o with
+ C.Constant (_,Some body,_,_,_) ->
let ens' = push_exp_named_subst k e ens exp_named_subst in
(* constants are closed *)
reduce (0, [], ens', body, s)
- | C.Constant (_,None,_,_) ->
+ | C.Constant (_,None,_,_,_) ->
let t' = unwind k e ens t in
if s = [] then t' else C.Appl (t'::(RS.from_stack_list ~unwind s))
| C.Variable _ -> raise ReferenceToVariable
- | C.CurrentProof (_,_,body,_,_) ->
+ | C.CurrentProof (_,_,body,_,_,_) ->
let ens' = push_exp_named_subst k e ens exp_named_subst in
(* constants are closed *)
reduce (0, [], ens', body, s)
reduce (k, e, ens, (List.nth pl (j-1)), s)
| C.Appl (C.MutConstruct (_,_,j,_) :: tl) ->
let (arity, r) =
- match CicEnvironment.get_obj mutind with
- C.InductiveDefinition (tl,ingredients,r) ->
- let (_,_,arity,_) = List.nth tl i in
- (arity,r)
- | _ -> raise WrongUriToInductiveDefinition
+ let o,_ =
+ CicEnvironment.get_cooked_obj CicUniv.empty_ugraph mutind
+ in
+ match o with
+ C.InductiveDefinition (tl,ingredients,r,_) ->
+ let (_,_,arity,_) = List.nth tl i in
+ (arity,r)
+ | _ -> raise WrongUriToInductiveDefinition
in
let ts =
let num_to_eat = r in
in
(* ts are already unwinded because they are a sublist of tl *)
reduce (k, e, ens, (List.nth pl (j-1)), (RS.to_stack_list ts)@s)
- | C.Cast _ | C.Implicit ->
+ | C.Cast _ | C.Implicit _ ->
raise (Impossible 2) (* we don't trust our whd ;-) *)
| _ ->
let t' = unwind k e ens t in
| (uri,t)::tl ->
push_exp_named_subst k e ((uri,RS.to_ens (unwind k e ens t))::ens) tl
in
- reduce
+ reduce
;;
-
- let rec whd context t = reduce context (0, [], [], t, []);;
+ (*
+ let rec whd context t =
+ try
+ reduce context (0, [], [], t, [])
+ with Not_found ->
+ prerr_endline (CicPp.ppterm t) ;
+ raise Not_found
+ ;;
+ *)
+
+ let rec whd ?(subst=[]) context t =
+ reduce ~subst context (0, [], [], t, [])
+ ;;
+
(* DEBUGGING ONLY
let whd context t =
ClosuresOnStackByValueFromEnvOrEnsByNameOnConstantsStrategy;;
*)
module R = Reduction(ClosuresOnStackByValueFromEnvOrEnsStrategy);;
+module U = UriManager;;
let whd = R.whd;;
+ (* mimic ocaml (<< 3.08) "=" behaviour. Tests physical equality first then
+ * fallbacks to structural equality *)
+let (===) x y = (Pervasives.compare x y = 0)
+
(* t1, t2 must be well-typed *)
-let are_convertible =
- let module U = UriManager in
- let rec aux context t1 t2 =
- let aux2 t1 t2 =
+let are_convertible ?(subst=[]) ?(metasenv=[]) =
+ let rec aux test_equality_only context t1 t2 ugraph =
+ let aux2 test_equality_only t1 t2 ugraph =
+
(* this trivial euristic cuts down the total time of about five times ;-) *)
(* this because most of the time t1 and t2 are "sintactically" the same *)
- if t1 = t2 then
- true
+ if t1 === t2 then
+ true,ugraph
else
begin
let module C = Cic in
match (t1,t2) with
- (C.Rel n1, C.Rel n2) -> n1 = n2
+ (C.Rel n1, C.Rel n2) -> (n1 = n2),ugraph
| (C.Var (uri1,exp_named_subst1), C.Var (uri2,exp_named_subst2)) ->
- U.eq uri1 uri2 &&
+ if U.eq uri1 uri2 then
(try
List.fold_right2
- (fun (uri1,x) (uri2,y) b ->
- U.eq uri1 uri2 && aux context x y && b
- ) exp_named_subst1 exp_named_subst2 true
+ (fun (uri1,x) (uri2,y) (b,ugraph) ->
+ let b',ugraph' = aux test_equality_only context x y ugraph in
+ (U.eq uri1 uri2 && b' && b),ugraph'
+ ) exp_named_subst1 exp_named_subst2 (true,ugraph)
with
- Invalid_argument _ -> false
+ Invalid_argument _ -> false,ugraph
)
- | (C.Meta (n1,l1), C.Meta (n2,l2)) ->
- n1 = n2 &&
- List.fold_left2
- (fun b t1 t2 ->
- b &&
- match t1,t2 with
- None,_
- | _,None -> true
- | Some t1',Some t2' -> aux context t1' t2'
- ) true l1 l2
- | (C.Sort s1, C.Sort s2) -> true (*CSC da finire con gli universi *)
+ else
+ false,ugraph
+ | (C.Meta (n1,l1), C.Meta (n2,l2)) ->
+ if n1 = n2 then
+ let b2, ugraph1 =
+ let l1 = CicUtil.clean_up_local_context subst metasenv n1 l1 in
+ let l2 = CicUtil.clean_up_local_context subst metasenv n2 l2 in
+ List.fold_left2
+ (fun (b,ugraph) t1 t2 ->
+ if b then
+ match t1,t2 with
+ None,_
+ | _,None -> true,ugraph
+ | Some t1',Some t2' ->
+ aux test_equality_only context t1' t2' ugraph
+ else
+ false,ugraph
+ ) (true,ugraph) l1 l2
+ in
+ if b2 then true,ugraph1 else false,ugraph
+ else
+ false,ugraph
+ (* TASSI: CONSTRAINTS *)
+ | (C.Sort (C.Type t1), C.Sort (C.Type t2)) when test_equality_only ->
+ true,(CicUniv.add_eq t2 t1 ugraph)
+ (* TASSI: CONSTRAINTS *)
+ | (C.Sort (C.Type t1), C.Sort (C.Type t2)) ->
+ true,(CicUniv.add_ge t2 t1 ugraph)
+ (* TASSI: CONSTRAINTS *)
+ | (C.Sort s1, C.Sort (C.Type _)) -> (not test_equality_only),ugraph
+ (* TASSI: CONSTRAINTS *)
+ | (C.Sort s1, C.Sort s2) -> (s1 = s2),ugraph
| (C.Prod (name1,s1,t1), C.Prod(_,s2,t2)) ->
- aux context s1 s2 &&
- aux ((Some (name1, (C.Decl s1)))::context) t1 t2
+ let b',ugraph' = aux true context s1 s2 ugraph in
+ if b' then
+ aux test_equality_only ((Some (name1, (C.Decl s1)))::context)
+ t1 t2 ugraph'
+ else
+ false,ugraph
| (C.Lambda (name1,s1,t1), C.Lambda(_,s2,t2)) ->
- aux context s1 s2 &&
- aux ((Some (name1, (C.Decl s1)))::context) t1 t2
+ let b',ugraph' = aux test_equality_only context s1 s2 ugraph in
+ if b' then
+ aux test_equality_only ((Some (name1, (C.Decl s1)))::context)
+ t1 t2 ugraph'
+ else
+ false,ugraph
| (C.LetIn (name1,s1,t1), C.LetIn(_,s2,t2)) ->
- aux context s1 s2 &&
- aux ((Some (name1, (C.Def (s1,None))))::context) t1 t2
+ let b',ugraph' = aux test_equality_only context s1 s2 ugraph in
+ if b' then
+ aux test_equality_only
+ ((Some (name1, (C.Def (s1,None))))::context) t1 t2 ugraph'
+ else
+ false,ugraph
| (C.Appl l1, C.Appl l2) ->
(try
- List.fold_right2 (fun x y b -> aux context x y && b) l1 l2 true
+ List.fold_right2
+ (fun x y (b,ugraph) ->
+ if b then
+ aux test_equality_only context x y ugraph
+ else
+ false,ugraph) l1 l2 (true,ugraph)
with
- Invalid_argument _ -> false
+ Invalid_argument _ -> false,ugraph
)
| (C.Const (uri1,exp_named_subst1), C.Const (uri2,exp_named_subst2)) ->
- U.eq uri1 uri2 &&
+ let b' = U.eq uri1 uri2 in
+ if b' then
(try
List.fold_right2
- (fun (uri1,x) (uri2,y) b ->
- U.eq uri1 uri2 && aux context x y && b
- ) exp_named_subst1 exp_named_subst2 true
+ (fun (uri1,x) (uri2,y) (b,ugraph) ->
+ if b && U.eq uri1 uri2 then
+ aux test_equality_only context x y ugraph
+ else
+ false,ugraph
+ ) exp_named_subst1 exp_named_subst2 (true,ugraph)
with
- Invalid_argument _ -> false
+ Invalid_argument _ -> false,ugraph
)
+ else
+ false,ugraph
| (C.MutInd (uri1,i1,exp_named_subst1),
C.MutInd (uri2,i2,exp_named_subst2)
) ->
- U.eq uri1 uri2 && i1 = i2 &&
+ let b' = U.eq uri1 uri2 && i1 = i2 in
+ if b' then
(try
List.fold_right2
- (fun (uri1,x) (uri2,y) b ->
- U.eq uri1 uri2 && aux context x y && b
- ) exp_named_subst1 exp_named_subst2 true
+ (fun (uri1,x) (uri2,y) (b,ugraph) ->
+ if b && U.eq uri1 uri2 then
+ aux test_equality_only context x y ugraph
+ else
+ false,ugraph
+ ) exp_named_subst1 exp_named_subst2 (true,ugraph)
with
- Invalid_argument _ -> false
+ Invalid_argument _ -> false,ugraph
)
+ else
+ false,ugraph
| (C.MutConstruct (uri1,i1,j1,exp_named_subst1),
C.MutConstruct (uri2,i2,j2,exp_named_subst2)
) ->
- U.eq uri1 uri2 && i1 = i2 && j1 = j2 &&
+ let b' = U.eq uri1 uri2 && i1 = i2 && j1 = j2 in
+ if b' then
(try
List.fold_right2
- (fun (uri1,x) (uri2,y) b ->
- U.eq uri1 uri2 && aux context x y && b
- ) exp_named_subst1 exp_named_subst2 true
+ (fun (uri1,x) (uri2,y) (b,ugraph) ->
+ if b && U.eq uri1 uri2 then
+ aux test_equality_only context x y ugraph
+ else
+ false,ugraph
+ ) exp_named_subst1 exp_named_subst2 (true,ugraph)
with
- Invalid_argument _ -> false
+ Invalid_argument _ -> false,ugraph
)
+ else
+ false,ugraph
| (C.MutCase (uri1,i1,outtype1,term1,pl1),
C.MutCase (uri2,i2,outtype2,term2,pl2)) ->
- U.eq uri1 uri2 && i1 = i2 && aux context outtype1 outtype2 &&
- aux context term1 term2 &&
- List.fold_right2 (fun x y b -> b && aux context x y) pl1 pl2 true
+ let b' = U.eq uri1 uri2 && i1 = i2 in
+ if b' then
+ let b'',ugraph''=aux test_equality_only context
+ outtype1 outtype2 ugraph in
+ if b'' then
+ let b''',ugraph'''= aux test_equality_only context
+ term1 term2 ugraph'' in
+ List.fold_right2
+ (fun x y (b,ugraph) ->
+ if b then
+ aux test_equality_only context x y ugraph
+ else
+ false,ugraph)
+ pl1 pl2 (true,ugraph''')
+ else
+ false,ugraph
+ else
+ false,ugraph
| (C.Fix (i1,fl1), C.Fix (i2,fl2)) ->
- let tys =
- List.map (function (n,_,ty,_) -> Some (C.Name n,(C.Decl ty))) fl1
- in
- i1 = i2 &&
+ let tys =
+ List.map (function (n,_,ty,_) -> Some (C.Name n,(C.Decl ty))) fl1
+ in
+ if i1 = i2 then
List.fold_right2
- (fun (_,recindex1,ty1,bo1) (_,recindex2,ty2,bo2) b ->
- b && recindex1 = recindex2 && aux context ty1 ty2 &&
- aux (tys@context) bo1 bo2)
- fl1 fl2 true
+ (fun (_,recindex1,ty1,bo1) (_,recindex2,ty2,bo2) (b,ugraph) ->
+ if b && recindex1 = recindex2 then
+ let b',ugraph' = aux test_equality_only context ty1 ty2
+ ugraph in
+ if b' then
+ aux test_equality_only (tys@context) bo1 bo2 ugraph'
+ else
+ false,ugraph
+ else
+ false,ugraph)
+ fl1 fl2 (true,ugraph)
+ else
+ false,ugraph
| (C.CoFix (i1,fl1), C.CoFix (i2,fl2)) ->
let tys =
List.map (function (n,ty,_) -> Some (C.Name n,(C.Decl ty))) fl1
in
- i1 = i2 &&
- List.fold_right2
- (fun (_,ty1,bo1) (_,ty2,bo2) b ->
- b && aux context ty1 ty2 && aux (tys@context) bo1 bo2)
- fl1 fl2 true
+ if i1 = i2 then
+ List.fold_right2
+ (fun (_,ty1,bo1) (_,ty2,bo2) (b,ugraph) ->
+ if b then
+ let b',ugraph' = aux test_equality_only context ty1 ty2
+ ugraph in
+ if b' then
+ aux test_equality_only (tys@context) bo1 bo2 ugraph'
+ else
+ false,ugraph
+ else
+ false,ugraph)
+ fl1 fl2 (true,ugraph)
+ else
+ false,ugraph
| (C.Cast _, _) | (_, C.Cast _)
- | (C.Implicit, _) | (_, C.Implicit) ->
+ | (C.Implicit _, _) | (_, C.Implicit _) ->
assert false
- | (_,_) -> false
+ | (_,_) -> false,ugraph
end
in
- if aux2 t1 t2 then true
- else
- begin
+ begin
debug t1 [t2] "PREWHD";
- let t1' = whd context t1 in
- let t2' = whd context t2 in
+ (*
+ (match t1 with
+ Cic.Meta _ ->
+ prerr_endline (CicPp.ppterm t1);
+ prerr_endline (CicPp.ppterm (whd ~subst context t1));
+ prerr_endline (CicPp.ppterm t2);
+ prerr_endline (CicPp.ppterm (whd ~subst context t2))
+ | _ -> ()); *)
+ let t1' = whd ~subst context t1 in
+ let t2' = whd ~subst context t2 in
debug t1' [t2'] "POSTWHD";
- aux2 t1' t2'
+ aux2 test_equality_only t1' t2' ugraph
end
in
- aux
+ aux false (*c t1 t2 ugraph *)
;;
+