ocaml 3.09 transition

[helm.git] / helm / matita / matitaDisambiguator.ml

diff --git a/helm/matita/matitaDisambiguator.ml b/helm/matita/matitaDisambiguator.ml
index db69cb71dfdd0eedf5050d3f03278e4106c24084..24a8355237b7d1e4a7b81d4b58068a01537bc22d 100644 (file)
--- a/helm/matita/matitaDisambiguator.ml
+++ b/helm/matita/matitaDisambiguator.ml
@@ -28,6 +28,7 @@ open Printf
 open MatitaTypes
 
 exception Ambiguous_input
+exception DisambiguationError of string Lazy.t list list
 
 type choose_uris_callback =
   id:string -> UriManager.uri list -> UriManager.uri list
@@ -68,58 +69,106 @@ module Disambiguator = Disambiguate.Make (Callbacks)
 
 (* implement module's API *)
 
-let disambiguate_thing ~aliases
-  ~(f:?fresh_instances:bool -> aliases:Disambiguate.aliases -> 'a -> 'b)
-  ~(set_aliases: DisambiguateTypes.environment -> 'b -> 'b)
+let disambiguate_thing ~aliases ~universe
+  ~(f:?fresh_instances:bool ->
+      aliases:DisambiguateTypes.environment ->
+      universe:DisambiguateTypes.multiple_environment option ->
+      'a -> 'b)
+  ~(drop_aliases: 'b -> 'b)
+  ~(drop_aliases_and_clear_diff: 'b -> 'b)
   (thing: 'a)
 =
-  let library = false, DisambiguateTypes.empty_environment in
-  let multi_aliases = true, aliases in
-  let mono_aliases = false, aliases in
+  assert (universe <> None);
+  let library = false, DisambiguateTypes.Environment.empty, None in
+  let multi_aliases=false, DisambiguateTypes.Environment.empty, universe in
+  let mono_aliases = true, aliases, None in
   let passes =  (* <fresh_instances?, aliases, coercions?> *)
     [ (false, mono_aliases, false);
       (false, multi_aliases, false);
-      (true, library, false);
+      (true, mono_aliases, false);
+      (true, multi_aliases, false);
       (true, mono_aliases, true);
       (true, multi_aliases, true);
       (true, library, true);
     ]
   in
-  let try_pass (fresh_instances, aliases, use_coercions) =
+  let try_pass (fresh_instances, (_, aliases, universe), use_coercions) =
     CoercDb.use_coercions := use_coercions;
-    f ~fresh_instances ~aliases thing
+    f ~fresh_instances ~aliases ~universe thing
   in
-  let rec aux =
+  let set_aliases (instances,(use_mono_aliases,_,_),_) (_, user_asked as res) =
+   if use_mono_aliases && not instances then
+    drop_aliases res
+   else if user_asked then
+    drop_aliases res (* one shot aliases *)
+   else
+    drop_aliases_and_clear_diff res
+  in
+  let rec aux errors =
     function
-    | [ pass ] -> try_pass pass
+    | [ pass ] ->
+        (try
+          set_aliases pass (try_pass pass)
+         with Disambiguate.NoWellTypedInterpretation newerrors ->
+          raise (DisambiguationError (errors @ [newerrors])))
     | hd :: tl ->
         (try
-          try_pass hd
-        with Disambiguate.NoWellTypedInterpretation ->
-          let (_, user_asked) as res = aux tl in
-          if user_asked then res else set_aliases aliases res)
+          set_aliases hd (try_pass hd)
+        with Disambiguate.NoWellTypedInterpretation newerrors ->
+         aux (errors @ [newerrors]) tl)
     | [] -> assert false
   in
   let saved_use_coercions = !CoercDb.use_coercions in
   try
-    let res = aux passes in
+    let res = aux [] passes in
     CoercDb.use_coercions := saved_use_coercions;
     res
   with exn ->
     CoercDb.use_coercions := saved_use_coercions;
     raise exn
 
-let set_aliases aliases (choices, user_asked) =
-  (List.map (fun (_, a, b, c) -> aliases, a, b, c) choices),
+type disambiguator_thing =
+ { do_it :
+    'a 'b.
+    aliases:DisambiguateTypes.environment ->
+    universe:DisambiguateTypes.multiple_environment option ->
+    f:(?fresh_instances:bool ->
+       aliases:DisambiguateTypes.environment ->
+       universe:DisambiguateTypes.multiple_environment option ->
+       'a -> 'b * bool) ->
+    drop_aliases:('b * bool -> 'b * bool) ->
+    drop_aliases_and_clear_diff:('b * bool -> 'b * bool) -> 'a -> 'b * bool
+ }
+
+let disambiguate_thing =
+ let profiler = HExtlib.profile "disambiguate_thing" in
+  { do_it =
+     fun ~aliases ~universe ~f ~drop_aliases ~drop_aliases_and_clear_diff thing
+     -> profiler.HExtlib.profile
+         (disambiguate_thing ~aliases ~universe ~f ~drop_aliases
+           ~drop_aliases_and_clear_diff) thing
+  }
+
+let drop_aliases (choices, user_asked) =
+  (List.map (fun (d, a, b, c) -> d, a, b, c) choices),
   user_asked
 
-let disambiguate_term ~dbd ~context ~metasenv ?initial_ugraph ~aliases term =
+let drop_aliases_and_clear_diff (choices, user_asked) =
+  (List.map (fun (_, a, b, c) -> [], a, b, c) choices),
+  user_asked
+
+let disambiguate_term ?fresh_instances ~dbd ~context ~metasenv ?initial_ugraph
+  ~aliases ~universe term
+ =
+  assert (fresh_instances = None);
   let f =
     Disambiguator.disambiguate_term ~dbd ~context ~metasenv ?initial_ugraph
   in
-  disambiguate_thing ~aliases ~f ~set_aliases term
+  disambiguate_thing.do_it ~aliases ~universe ~f ~drop_aliases
+   ~drop_aliases_and_clear_diff term
 
-let disambiguate_obj ~dbd ~aliases ~uri obj =
+let disambiguate_obj ?fresh_instances ~dbd ~aliases ~universe ~uri obj =
+  assert (fresh_instances = None);
   let f = Disambiguator.disambiguate_obj ~dbd ~uri in
-  disambiguate_thing ~aliases ~f ~set_aliases obj
-
+  disambiguate_thing.do_it ~aliases ~universe ~f ~drop_aliases
+   ~drop_aliases_and_clear_diff obj