prima implementazione di demodulate, superposition_left e superposition_right

[helm.git] / helm / ocaml / cic_disambiguation / disambiguate.ml

diff --git a/helm/ocaml/cic_disambiguation/disambiguate.ml b/helm/ocaml/cic_disambiguation/disambiguate.ml
index 7237c8fb72d0d5acc664e438ac2a0795618dd4a3..b71e908856ba017df051a5d244f7ab39a1fd9035 100644 (file)
--- a/helm/ocaml/cic_disambiguation/disambiguate.ml
+++ b/helm/ocaml/cic_disambiguation/disambiguate.ml
@@ -67,19 +67,19 @@ let refine metasenv context term ugraph =
        (Ok (term', metasenv')),ugraph1
     with
       | CicRefine.Uncertain _ ->
-          debug_print ("%%% UNCERTAIN!!! " ^ CicPp.ppterm term) ;
+          debug_print ("UNCERTAIN!!! " ^ CicPp.ppterm term) ;
           Uncertain,ugraph
-      | CicRefine.RefineFailure _ ->
-          debug_print ("%%% PRUNED!!! " ^ CicPp.ppterm term) ;
+      | CicRefine.RefineFailure msg ->
+          debug_print (sprintf "PRUNED!!!\nterm%s\nmessage:%s"
+            (CicPp.ppterm term) msg);
           Ko,ugraph
-      | CicUnification.UnificationFailure s -> 
-        prerr_endline ("PASSADI QUI: " ^ s);
-          raise ( CicUnification.UnificationFailure s )
 
 let resolve (env: environment) (item: domain_item) ?(num = "") ?(args = []) () =
   try
     snd (Environment.find item env) env num args
-  with Not_found -> assert false
+  with Not_found -> 
+    failwith ("Domain item not found: " ^ 
+      (DisambiguateTypes.string_of_domain_item item))
 
   (* TODO move it to Cic *)
 let find_in_environment name context =
@@ -250,7 +250,7 @@ let interpretate ~context ~env ast =
                 Cic.MutConstruct (uri, i, j, mk_subst uris)
             | Cic.Meta _ | Cic.Implicit _ as t ->
 (*
-                prerr_endline (sprintf
+                debug_print (sprintf
                   "Warning: %s must be instantiated with _[%s] but we do not enforce it"
                   (CicPp.ppterm t)
                   (String.concat "; "
@@ -265,6 +265,8 @@ let interpretate ~context ~env ast =
              CicEnvironment.CircularDependency _ -> 
                raise DisambiguateChoices.Invalid_choice))
     | CicAst.Implicit -> Cic.Implicit None
+    | CicAst.UserInput -> Cic.Implicit (Some `Hole)
+(*    | CicAst.UserInput -> assert false*)
     | CicAst.Num (num, i) -> resolve env (Num i) ~num ()
     | CicAst.Meta (index, subst) ->
         let cic_subst =
@@ -279,7 +281,6 @@ let interpretate ~context ~env ast =
     | CicAst.Sort `CProp -> Cic.Sort Cic.CProp
     | CicAst.Symbol (symbol, instance) ->
         resolve env (Symbol (symbol, instance)) ()
-    | CicAst.UserInput -> assert false
   and aux_option loc context = function
     | None -> Cic.Implicit (Some `Type)
     | Some term -> aux loc context term
@@ -309,6 +310,10 @@ let domain_of_term ~context ast =
     | CicAst.Case (term, indty_ident, outtype, branches) ->
         let term_dom = aux loc context term in
         let outtype_dom = aux_option loc context outtype in
+        let get_first_constructor = function
+          | [] -> []
+          | ((head, _), _) :: _ -> [ Id head ]
+        in
         let do_branch ((head, args), term) =
           let (term_context, args_domain) =
             List.fold_left
@@ -325,7 +330,9 @@ let domain_of_term ~context ast =
           List.fold_left (fun dom branch -> do_branch branch @ dom) [] branches
         in
         branches_dom @ outtype_dom @ term_dom @
-        (match indty_ident with None -> [] | Some ident -> [ Id ident ])
+        (match indty_ident with
+         | None -> get_first_constructor branches
+         | Some ident -> [ Id ident ])
     | CicAst.LetIn ((var, typ), body, where) ->
         let body_dom = aux loc context body in
         let type_dom = aux_option loc context typ in
@@ -414,6 +421,21 @@ let domain_diff dom1 dom2 =
   in
   List.filter (fun elt -> not (is_in_dom2 elt)) dom1
 
+module type Disambiguator =
+sig
+  val disambiguate_term :
+    dbd:Mysql.dbd ->
+    context:Cic.context ->
+    metasenv:Cic.metasenv ->
+    ?initial_ugraph:CicUniv.universe_graph -> 
+    aliases:environment ->  (* previous interpretation status *)
+    CicAst.term ->
+    (environment *                   (* new interpretation status *)
+     Cic.metasenv *                  (* new metasenv *)
+     Cic.term*
+     CicUniv.universe_graph) list    (* disambiguated term *)
+end
+
 module Make (C: Callbacks) =
   struct
     let choices_of_id dbd id =
@@ -439,15 +461,16 @@ module Make (C: Callbacks) =
              try
                CicUtil.term_of_uri uri
              with exn ->
-               prerr_endline uri;
-               prerr_endline (Printexc.to_string exn);
+               debug_print uri;
+               debug_print (Printexc.to_string exn);
                assert false
             in
            fun _ _ _ -> term))
         uris
 
-    let disambiguate_term ~(dbd:Mysql.dbd) context metasenv term
-      ?(initial_ugraph = CicUniv.empty_ugraph)  ~aliases:current_env
+    let disambiguate_term ~(dbd:Mysql.dbd) ~context ~metasenv
+      ?(initial_ugraph = CicUniv.empty_ugraph) ~aliases:current_env
+      term
     =
       debug_print "NEW DISAMBIGUATE INPUT";
       let disambiguate_context =  (* cic context -> disambiguate context *)
@@ -455,6 +478,7 @@ module Make (C: Callbacks) =
           (function None -> Cic.Anonymous | Some (name, _) -> name)
           context
       in
+      debug_print ("TERM IS: " ^ (CicAstPp.pp_term term));
       let term_dom = domain_of_term ~context:disambiguate_context term in
       debug_print (sprintf "DISAMBIGUATION DOMAIN: %s"
         (string_of_domain term_dom));
@@ -491,7 +515,7 @@ module Make (C: Callbacks) =
               (fun dom_item ->
                 try
                   let len = List.length (lookup_choices dom_item) in
-                  prerr_endline (sprintf "BENCHMARK %s: %d"
+                  debug_print (sprintf "BENCHMARK %s: %d"
                     (string_of_domain_item dom_item) len);
                   len
                 with No_choices _ -> 0)
@@ -592,7 +616,7 @@ module Make (C: Callbacks) =
 (*
         (if benchmark then
           let res_size = List.length res in
-          prerr_endline (sprintf
+          debug_print (sprintf
             ("BENCHMARK: %d/%d refinements performed, domain size %d, interps %d, k %.2f\n" ^^
             "BENCHMARK:   estimated %.2f")
             !actual_refinements !max_refinements !domain_size res_size
@@ -605,3 +629,25 @@ module Make (C: Callbacks) =
         failwith "Disambiguate: circular dependency"
   end
 
+module Trivial =
+struct
+  exception Ambiguous_term of string
+  exception Exit
+  module Callbacks =
+  struct
+    let interactive_user_uri_choice ~selection_mode ?ok
+          ?(enable_button_for_non_vars = true) ~title ~msg ~id uris =
+              raise Exit
+    let interactive_interpretation_choice interp = raise Exit
+    let input_or_locate_uri ~(title:string) ?id = raise Exit
+  end
+  module Disambiguator = Make (Callbacks)
+  let disambiguate_string ~dbd ?(context=[]) ?(metasenv=[]) ?initial_ugraph
+        ?(aliases=DisambiguateTypes.Environment.empty) term =
+    let ast = CicTextualParser2.parse_term (Stream.of_string term) in
+    try
+      Disambiguator.disambiguate_term ~dbd ~context ~metasenv ast
+        ?initial_ugraph ~aliases
+    with Exit -> raise (Ambiguous_term term)
+end
+