X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_kernel%2FnCicLibrary.ml;h=6d1797677a6f23b8c587afe71709990f9e4189b1;hb=5d0d8107649b9264ebe7d8ff2c69bf777179b0d2;hp=1cb3a118b40c44eae03ac7bd6b445c6f9ea02162;hpb=8bc5bc0e8375a85736f6a5df317d129d5efa8de4;p=helm.git

diff --git a/helm/software/components/ng_kernel/nCicLibrary.ml b/helm/software/components/ng_kernel/nCicLibrary.ml
index 1cb3a118b..6d1797677 100644
--- a/helm/software/components/ng_kernel/nCicLibrary.ml
+++ b/helm/software/components/ng_kernel/nCicLibrary.ml
@@ -13,41 +13,49 @@
 
 exception LibraryOutOfSync of string Lazy.t
 
-type timestamp =
- (NUri.uri * NCic.obj) list *
- (NUri.uri * string * NReference.reference) list *
- NCic.obj NUri.UriMap.t;;
+let magic = 2;;
 
-let time0 = [],[],NUri.UriMap.empty;;
-let storage = ref [];;
-let aliases = ref [];;
-let cache = ref NUri.UriMap.empty;;
+let refresh_uri uri = NUri.uri_of_string (NUri.string_of_uri uri);;
 
-class status =
- object
-  val timestamp = (time0 : timestamp)
-  method timestamp = timestamp
-  method set_timestamp v = {< timestamp = v >}
- end
+let refresh_uri_in_universe =
+ List.map (fun (x,u) -> x, refresh_uri u)
+;;
 
-let time_travel status =
- let sto,ali,cac = status#timestamp in
-  storage := sto; aliases := ali; cache := cac
+let rec refresh_uri_in_term =
+ function
+  | NCic.Const (NReference.Ref (u,spec)) ->
+     NCic.Const (NReference.reference_of_spec (refresh_uri u) spec)
+  | NCic.Sort (NCic.Type l) -> NCic.Sort (NCic.Type (refresh_uri_in_universe l))
+  | NCic.Match (NReference.Ref (uri,spec),outtype,term,pl) ->
+     let r = NReference.reference_of_spec (refresh_uri uri) spec in
+     let outtype = refresh_uri_in_term outtype in
+     let term = refresh_uri_in_term term in
+     let pl = List.map refresh_uri_in_term pl in
+      NCic.Match (r,outtype,term,pl)
+  | t -> NCicUtils.map (fun _ _ -> ()) () (fun _ -> refresh_uri_in_term) t
 ;;
 
-let path_of_baseuri baseuri =
+let refresh_uri_in_obj (uri,height,metasenv,subst,obj_kind) =
+ assert (metasenv = []);
+ assert (subst = []);
+ refresh_uri uri,height,metasenv,subst,
+  NCicUntrusted.map_obj_kind refresh_uri_in_term obj_kind
+;;
+
+let path_of_baseuri ?(no_suffix=false) baseuri =
  let uri = NUri.string_of_uri baseuri in
  let path = String.sub uri 4 (String.length uri - 4) in
  let path = Helm_registry.get "matita.basedir" ^ path in
  let dirname = Filename.dirname path in
   HExtlib.mkdir dirname;
-  path ^ ".ng"
+  if no_suffix then
+   path
+  else
+   path ^ ".ng"
 ;;
 
-let magic = 0;;
-
-let require0 ~baseuri =
- let ch = open_in (path_of_baseuri baseuri) in
+let require_path path =
+ let ch = open_in path in
  let mmagic,dump = Marshal.from_channel ch in
   close_in ch;
   if mmagic <> magic then
@@ -56,42 +64,126 @@ let require0 ~baseuri =
    dump
 ;;
 
+let require0 ~baseuri = require_path (path_of_baseuri baseuri);;
+
+let db_path () = Helm_registry.get "matita.basedir" ^ "/ng_db.ng";;
+
+
+type timestamp =
+ [ `Obj of NUri.uri * NCic.obj 
+ | `Constr of bool * NCic.universe * NCic.universe] list *
+ (NUri.uri * string * NReference.reference) list *
+ NCic.obj NUri.UriMap.t *
+ NUri.uri list
+;;
+
+let time0 = [],[],NUri.UriMap.empty,[];;
+let storage = ref [];;
+let local_aliases = ref [];;
+let cache = ref NUri.UriMap.empty;;
+let includes = ref [];;
+
+let load_db,set_global_aliases,get_global_aliases,add_deps,get_deps,remove_deps=
+ let global_aliases = ref [] in
+ let rev_includes_map = ref NUri.UriMap.empty in
+ let store_db () =
+  let ch = open_out (db_path ()) in
+  Marshal.to_channel ch (magic,(!global_aliases,!rev_includes_map)) [];
+  close_out ch in
+ let load_db () =
+  HExtlib.mkdir (Helm_registry.get "matita.basedir");
+  try
+   let ga,im = require_path (db_path ()) in
+   let ga =
+    List.map
+     (fun (uri,name,NReference.Ref (uri2,spec)) ->
+       refresh_uri uri,name,NReference.reference_of_spec (refresh_uri uri2) spec
+     ) ga in
+   let im =
+    NUri.UriMap.fold
+     (fun u l im -> NUri.UriMap.add (refresh_uri u) (List.map refresh_uri l) im
+     ) im NUri.UriMap.empty
+   in
+    global_aliases := ga;
+    rev_includes_map := im
+  with
+   Sys_error _ -> () in
+ let get_deps u =
+  let get_deps_one_step u =
+    try NUri.UriMap.find u !rev_includes_map with Not_found -> [] in
+  let rec aux res =
+   function
+      [] -> res
+    | he::tl ->
+       if List.mem he res then
+        aux res tl
+       else
+        aux (he::res) (get_deps_one_step he @ tl)
+  in
+   aux [] [u] in
+ let remove_deps u =
+  rev_includes_map := NUri.UriMap.remove u !rev_includes_map;
+  rev_includes_map :=
+   NUri.UriMap.map
+    (fun l -> List.filter (fun uri -> not (NUri.eq u uri)) l) !rev_includes_map;
+  store_db ()
+ in
+  load_db,
+  (fun ga -> global_aliases := ga; store_db ()),
+  (fun () -> !global_aliases),
+  (fun u l ->
+    rev_includes_map := NUri.UriMap.add u (l @ get_deps u) !rev_includes_map;
+    store_db ()),
+  get_deps,
+  remove_deps
+;;
+
+let init = load_db;;
+
+
+class status =
+ object
+  val timestamp = (time0 : timestamp)
+  method timestamp = timestamp
+  method set_timestamp v = {< timestamp = v >}
+  method set_library_status
+   : 'status. < timestamp : timestamp; .. > as 'status -> 'self
+   = fun o -> {< timestamp = o#timestamp >}
+ end
+
+let time_travel status =
+ let sto,ali,cac,inc = status#timestamp in
+  let diff_len = List.length !storage - List.length sto in
+  let to_be_deleted,_ = HExtlib.split_nth diff_len !storage in
+   if List.length to_be_deleted > 0 then
+     NCicEnvironment.invalidate_item (HExtlib.list_last to_be_deleted);
+   storage := sto; local_aliases := ali; cache := cac; includes := inc
+;;
+
 let serialize ~baseuri dump =
  let ch = open_out (path_of_baseuri baseuri) in
- Marshal.to_channel ch (magic,dump) [Marshal.Closures];
+ Marshal.to_channel ch (magic,dump) [];
  close_out ch;
  List.iter
-  (fun (uri,obj) ->
-    let ch = open_out (path_of_baseuri uri) in
-    Marshal.to_channel ch (magic,obj) [];
-    close_out ch
+  (function 
+   | `Obj (uri,obj) ->
+       let ch = open_out (path_of_baseuri uri) in
+       Marshal.to_channel ch (magic,obj) [];
+       close_out ch
+   | `Constr _ -> ()
   ) !storage;
+ set_global_aliases (!local_aliases @ get_global_aliases ());
+ List.iter (fun u -> add_deps u [baseuri]) !includes;
  time_travel (new status)
 ;;
 
-let refresh_uri uri = NUri.uri_of_string (NUri.string_of_uri uri);;
-
-let rec refresh_uri_in_term =
- function
-    NCic.Const (NReference.Ref (u,spec)) ->
-     NCic.Const (NReference.reference_of_spec (refresh_uri u) spec)
-  | t -> NCicUtils.map (fun _ _ -> ()) () (fun _ -> refresh_uri_in_term) t
-;;
-
-let refresh_uri_in_obj (uri,height,metasenv,subst,obj_kind) =
- assert (metasenv = []);
- assert (subst = []);
- uri,height,metasenv,subst,
-  NCicUntrusted.map_obj_kind refresh_uri_in_term obj_kind
-;;
-
 module type Serializer =
  sig
   type status
   type obj
   val register:
    string ->
-    ('a -> refresh_uri_in_term:(NCic.term -> NCic.term) -> status -> status) ->
+    ('a -> refresh_uri_in_universe:(NCic.universe -> NCic.universe) -> refresh_uri_in_term:(NCic.term -> NCic.term) -> status -> status) ->
     ('a -> obj)
   val serialize: baseuri:NUri.uri -> obj list -> unit
   val require: baseuri:NUri.uri -> status -> status
@@ -111,7 +203,7 @@ module Serializer(S: sig type status end) =
    require1 :=
     (fun (tag',data) as x ->
      if tag=tag' then
-      require (Obj.magic data) ~refresh_uri_in_term
+      require (Obj.magic data) ~refresh_uri_in_universe ~refresh_uri_in_term 
      else
       !require1 x);
    (fun x -> tag,Obj.repr x)
@@ -119,15 +211,42 @@ module Serializer(S: sig type status end) =
   let serialize = serialize
 
   let require ~baseuri status =
+   includes := baseuri::!includes;
    let dump = require0 ~baseuri in
     List.fold_right !require1 dump status
 end
 
 let decompile ~baseuri =
- Unix.unlink (path_of_baseuri baseuri)
- (* WE ARE NOT REMOVING ALL THE OBJECTS YET! *)
+ let baseuris = get_deps baseuri in
+ List.iter (fun baseuri ->
+  remove_deps baseuri;
+  HExtlib.safe_remove (path_of_baseuri baseuri);
+  let basepath = path_of_baseuri ~no_suffix:true baseuri in
+  try
+   let od = Unix.opendir basepath in
+   let rec aux names =
+    try
+     let name = Unix.readdir od in
+      if name <> "." && name <> ".." then aux (name::names) else aux names
+    with
+     End_of_file -> names in
+   let names = List.map (fun name -> basepath ^ "/" ^ name) (aux []) in
+    Unix.closedir od;
+    List.iter Unix.unlink names;
+    HExtlib.rmdir_descend basepath;
+    set_global_aliases
+     (List.filter
+      (fun (_,_,NReference.Ref (nuri,_)) ->
+        Filename.dirname (NUri.string_of_uri nuri) <> NUri.string_of_uri baseuri
+      ) (get_global_aliases ()))
+  with
+   Unix.Unix_error _ -> () (* raised by Unix.opendir, we hope :-) *)
+ ) baseuris
 ;;
 
+LibraryClean.set_decompile_cb
+ (fun ~baseuri -> decompile ~baseuri:(NUri.uri_of_string baseuri));;
+
 let fetch_obj uri =
  let obj = require0 ~baseuri:uri in
   refresh_uri_in_obj obj
@@ -136,7 +255,8 @@ let fetch_obj uri =
 let resolve name =
  try
   HExtlib.filter_map
-   (fun (_,name',nref) -> if name'=name then Some nref else None) !aliases
+   (fun (_,name',nref) -> if name'=name then Some nref else None)
+   (!local_aliases @ get_global_aliases ())
  with
   Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy name))
 ;;
@@ -144,13 +264,15 @@ let resolve name =
 let aliases_of uri =
  try
   HExtlib.filter_map
-   (fun (uri',_,nref) -> if NUri.eq uri' uri then Some nref else None) !aliases
+   (fun (uri',_,nref) ->
+     if NUri.eq uri' uri then Some nref else None) !local_aliases
  with
   Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy (NUri.string_of_uri uri)))
 ;;
 
-let add_obj status u obj =
- storage := (u,obj)::!storage;
+let add_obj status ((u,_,_,_,_) as obj) =
+ NCicEnvironment.check_and_add_obj obj;
+ storage := (`Obj (u,obj))::!storage;
   let _,height,_,_,obj = obj in
   let references =
    match obj with
@@ -179,12 +301,22 @@ let add_obj status u obj =
               (NReference.Ind (inductive,i,leftno))]
          ) il)
   in
-  aliases := references @ !aliases;
-  status#set_timestamp (!storage,!aliases,!cache)
+  local_aliases := references @ !local_aliases;
+  status#set_timestamp (!storage,!local_aliases,!cache,!includes)
+;;
+
+let add_constraint status strict u1 u2 = 
+  NCicEnvironment.add_constraint strict u1 u2;
+  storage := (`Constr (strict,u1,u2)) :: !storage;
+  status#set_timestamp (!storage,!local_aliases,!cache,!includes)
 ;;
 
 let get_obj u =
- try List.assq u !storage
+ try 
+  List.assq u 
+   (HExtlib.filter_map 
+    (function `Obj (u,o) -> Some (u,o) | _ -> None )
+    !storage)
  with Not_found ->
   try fetch_obj u
   with Sys_error _ ->