+ (** (de)serialization of type checker cache *)
+ val dump_to_channel : ?callback:(string -> unit) -> out_channel -> unit
+ val restore_from_channel : ?callback:(string -> unit) -> in_channel -> unit
+ val empty : unit -> unit
+ end
+ =
+ struct
+ module HashedType =
+ struct
+ type t = UriManager.uri
+ let equal = UriManager.eq
+ let hash = Hashtbl.hash
+ end
+ ;;
+ module HT = Hashtbl.Make(HashedType);;
+ let hashtable = HT.create 1009;;
+ let mem uri =
+ try
+ HT.mem hashtable uri
+ with
+ Not_found -> false
+ ;;
+ let find uri = HT.find hashtable uri
+ ;;
+ let add uri obj =
+ HT.add hashtable uri obj
+ ;;
+
+ (* used to hash cons uris on restore to grant URI structure unicity *)
+ let restore_uris =
+ let module C = Cic in
+ let recons uri =
+ UriManager.uri_of_string (UriManager.string_of_uri uri)
+ in
+ let rec restore_in_term =
+ function
+ (C.Rel _) as t -> t
+ | C.Var (uri,exp_named_subst) ->
+ let uri' = recons uri in
+ let exp_named_subst' =
+ List.map
+ (function (uri,t) ->(recons uri,restore_in_term t)) exp_named_subst
+ in
+ C.Var (uri',exp_named_subst')
+ | C.Meta (i,l) ->
+ let l' =
+ List.map
+ (function
+ None -> None
+ | Some t -> Some (restore_in_term t)
+ ) l
+ in
+ C.Meta(i,l')
+ | C.Sort _ as t -> t
+ | C.Implicit _ as t -> t
+ | C.Cast (te,ty) -> C.Cast (restore_in_term te, restore_in_term ty)
+ | C.Prod (n,s,t) -> C.Prod (n, restore_in_term s, restore_in_term t)
+ | C.Lambda (n,s,t) -> C.Lambda (n, restore_in_term s, restore_in_term t)
+ | C.LetIn (n,s,t) -> C.LetIn (n, restore_in_term s, restore_in_term t)
+ | C.Appl l -> C.Appl (List.map restore_in_term l)
+ | C.Const (uri,exp_named_subst) ->
+ let uri' = recons uri in
+ let exp_named_subst' =
+ List.map
+ (function (uri,t) -> (recons uri,restore_in_term t)) exp_named_subst
+ in
+ C.Const (uri',exp_named_subst')
+ | C.MutInd (uri,tyno,exp_named_subst) ->
+ let uri' = recons uri in
+ let exp_named_subst' =
+ List.map
+ (function (uri,t) -> (recons uri,restore_in_term t)) exp_named_subst
+ in
+ C.MutInd (uri',tyno,exp_named_subst')
+ | C.MutConstruct (uri,tyno,consno,exp_named_subst) ->
+ let uri' = recons uri in
+ let exp_named_subst' =
+ List.map
+ (function (uri,t) -> (recons uri,restore_in_term t)) exp_named_subst
+ in
+ C.MutConstruct (uri',tyno,consno,exp_named_subst')
+ | C.MutCase (uri,i,outty,t,pl) ->
+ C.MutCase (recons uri, i, restore_in_term outty, restore_in_term t,
+ List.map restore_in_term pl)
+ | C.Fix (i, fl) ->
+ let len = List.length fl in
+ let liftedfl =
+ List.map
+ (fun (name, i, ty, bo) ->
+ (name, i, restore_in_term ty, restore_in_term bo))
+ fl
+ in
+ C.Fix (i, liftedfl)
+ | C.CoFix (i, fl) ->
+ let len = List.length fl in
+ let liftedfl =
+ List.map
+ (fun (name, ty, bo) -> (name, restore_in_term ty, restore_in_term bo))
+ fl
+ in
+ C.CoFix (i, liftedfl)
+ in
+ function
+ C.Constant (name,bo,ty,params) ->
+ let bo' =
+ match bo with
+ None -> None
+ | Some bo -> Some (restore_in_term bo)
+ in
+ let ty' = restore_in_term ty in
+ let params' = List.map recons params in
+ C.Constant (name, bo', ty', params')
+ | C.CurrentProof (name,conjs,bo,ty,params) ->
+ let conjs' =
+ List.map
+ (function (i,hyps,ty) ->
+ (i,
+ List.map (function
+ None -> None
+ | Some (name,C.Decl t) ->
+ Some (name,C.Decl (restore_in_term t))
+ | Some (name,C.Def (bo,ty)) ->
+ let ty' =
+ match ty with
+ None -> None
+ | Some ty'' -> Some (restore_in_term ty'')
+ in
+ Some (name,C.Def (restore_in_term bo, ty'))) hyps,
+ restore_in_term ty))
+ conjs
+ in
+ let bo' = restore_in_term bo in
+ let ty' = restore_in_term ty in
+ let params' = List.map recons params in
+ C.CurrentProof (name, conjs', bo', ty', params')
+ | C.Variable (name,bo,ty,params) ->
+ let bo' =
+ match bo with
+ None -> None
+ | Some bo -> Some (restore_in_term bo)
+ in
+ let ty' = restore_in_term ty in
+ let params' = List.map recons params in
+ C.Variable (name, bo', ty', params')
+ | C.InductiveDefinition (tl,params,paramsno) ->
+ let params' = List.map recons params in
+ let tl' =
+ List.map (function (name, inductive, ty, constructors) ->
+ name,
+ inductive,
+ restore_in_term ty,
+ (List.map
+ (function (name, ty) -> name, restore_in_term ty)
+ constructors))
+ tl
+ in
+ C.InductiveDefinition (tl', params', paramsno)
+
+ let dump_to_channel ?(callback = ignore) oc =
+ HT.iter (fun uri _ -> callback (UriManager.string_of_uri uri)) hashtable;
+ Marshal.to_channel oc hashtable [] ;;
+ let empty () = HT.clear hashtable ;;
+ let restore_from_channel ?(callback = ignore) ic =
+ let restored = Marshal.from_channel ic in
+ empty ();
+ HT.iter
+ (fun k v ->
+ callback (UriManager.string_of_uri k);
+ HT.add hashtable
+ (UriManager.uri_of_string (UriManager.string_of_uri k))
+ (restore_uris v))
+ restored
+ ;;
+
+ end
+ ;;
+ let frozen_list = ref [];;
+ let unchecked_list = ref [];;
+
+ let find_or_add_unchecked uri ~get_object_to_add =
+ try
+ List.assq uri !unchecked_list
+ with
+ Not_found ->
+ if List.mem_assq uri !frozen_list then
+ raise (CircularDependency (UriManager.string_of_uri uri))
+ else
+ if CacheOfCookedObjects.mem uri then
+ raise (AlreadyCooked (UriManager.string_of_uri uri))
+ else
+ (* OK, it is not already frozen nor cooked *)
+ let obj = get_object_to_add () in
+ unchecked_list := (uri,obj)::!unchecked_list ;
+ obj
+ ;;
+ let unchecked_to_frozen uri =
+ try
+ let obj = List.assq uri !unchecked_list in
+ unchecked_list := List.remove_assq uri !unchecked_list ;
+ frozen_list := (uri,obj)::!frozen_list
+ with
+ Not_found -> raise (CouldNotFreeze (UriManager.string_of_uri uri))
+ ;;
+ let frozen_to_cooked ~uri =
+ try
+ let obj = List.assq uri !frozen_list in
+ frozen_list := List.remove_assq uri !frozen_list ;
+ CacheOfCookedObjects.add uri obj
+ with
+ Not_found -> raise (CouldNotUnfreeze (UriManager.string_of_uri uri))
+ ;;
+ let find_cooked ~key:uri = CacheOfCookedObjects.find uri;;
+ let add_cooked ~key:uri obj = CacheOfCookedObjects.add uri obj;;
+
+ let dump_to_channel = CacheOfCookedObjects.dump_to_channel;;
+ let restore_from_channel = CacheOfCookedObjects.restore_from_channel;;
+ let empty = CacheOfCookedObjects.empty;;
+ end