X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FmetadataQuery.ml;h=0e86d8ccecf56b8a9005cec598b0e5d585cd875b;hb=de9a83f286eee12117fb478ea2db18f7faebac9a;hp=619af110b73afe54387826ed1f22af6ec96e2739;hpb=2e9230cc95280f928b15c624ee4564fffea56373;p=helm.git

diff --git a/helm/ocaml/tactics/metadataQuery.ml b/helm/ocaml/tactics/metadataQuery.ml
index 619af110b..0e86d8cce 100644
--- a/helm/ocaml/tactics/metadataQuery.ml
+++ b/helm/ocaml/tactics/metadataQuery.ml
@@ -26,27 +26,82 @@
 open Printf
 
 module Constr = MetadataConstraints
+module PET = ProofEngineTypes 
 
-let locate ~(dbh:Dbi.connection) name =
-  let query =
-    dbh#prepare (sprintf "SELECT source FROM %s WHERE value = \"%s\""
-      MetadataTypes.name_tbl name)
-  in
-  query#execute [];
-  List.map (function [`String s] -> s | _ -> assert false) (query#fetchall ())
-
-let match_term ~(dbh:Dbi.connection) ty =
-  let constraints =
-    List.map MetadataTypes.constr_of_metadata
-      (MetadataExtractor.compute ~body:None ~ty)
+  (** maps a shell like pattern (which uses '*' and '?') to a sql pattern for
+  * the "like" operator (which uses '%' and '_'). Does not support escaping. *)
+let sqlpat_of_shellglob =
+  let star_RE, qmark_RE, percent_RE, uscore_RE =
+    Pcre.regexp "\\*", Pcre.regexp "\\?", Pcre.regexp "%", Pcre.regexp "_"
   in
-  Constr.at_least ~dbh constraints
+  fun shellglob ->
+    Pcre.replace ~rex:star_RE ~templ:"%"
+      (Pcre.replace ~rex:qmark_RE ~templ:"_"
+        (Pcre.replace ~rex:percent_RE ~templ:"\\%"
+          (Pcre.replace ~rex:uscore_RE ~templ:"\\_"
+            shellglob)))
 
 let nonvar s =
   let len = String.length s in
   let suffix = String.sub s (len-4) 4 in
   not (suffix  = ".var")
 
+let locate ~(dbd:Mysql.dbd) ?(vars = false) pat =
+  let sql_pat = sqlpat_of_shellglob pat in
+  let query =
+        sprintf ("SELECT source FROM %s WHERE value LIKE \"%s\" UNION "^^
+                 "SELECT source FROM %s WHERE value LIKE \"%s\"")
+          (MetadataTypes.name_tbl ()) sql_pat
+           MetadataTypes.library_name_tbl sql_pat
+  in
+  let result = Mysql.exec dbd query in
+  List.filter nonvar
+    (Mysql.map result
+      (fun cols -> match cols.(0) with Some s -> s | _ -> assert false))
+
+let match_term ~(dbd:Mysql.dbd) ty =
+(*   prerr_endline (CicPp.ppterm ty); *)
+  let metadata = MetadataExtractor.compute ~body:None ~ty in
+  let constants_no =
+    MetadataConstraints.StringSet.cardinal (MetadataConstraints.constants_of ty)
+  in
+  let full_card, diff =
+    if CicUtil.is_meta_closed ty then
+      Some (MetadataConstraints.Eq constants_no), None
+    else
+      let diff_no =
+        let (hyp_constants, concl_constants) =
+          (* collect different constants in hypotheses and conclusions *)
+          List.fold_left
+            (fun ((hyp, concl) as acc) metadata ->
+               match (metadata: MetadataTypes.metadata) with
+               | `Sort _ | `Rel _ -> acc
+               | `Obj (uri, `InConclusion) | `Obj (uri, `MainConclusion _)
+                 when not (List.mem uri concl) -> (hyp, uri :: concl)
+               | `Obj (uri, `InHypothesis) | `Obj (uri, `MainHypothesis _)
+                 when not (List.mem uri hyp) -> (uri :: hyp, concl)
+               | `Obj _ -> acc)
+            ([], [])
+            metadata
+        in
+        List.length hyp_constants - List.length concl_constants
+      in
+      let (concl_metas, hyp_metas) = MetadataExtractor.compute_metas ty in
+      let diff =
+        if MetadataExtractor.IntSet.equal concl_metas hyp_metas then
+          Some (MetadataConstraints.Eq diff_no)
+        else if MetadataExtractor.IntSet.subset concl_metas hyp_metas then
+          Some (MetadataConstraints.Gt (diff_no - 1))
+        else if MetadataExtractor.IntSet.subset hyp_metas concl_metas then
+          Some (MetadataConstraints.Lt (diff_no + 1))
+        else
+          None
+      in
+      None, diff
+  in
+  let constraints = List.map MetadataTypes.constr_of_metadata metadata in
+  Constr.at_least ~dbd ?full_card ?diff constraints
+
 let ( ** ) x y = int_of_float ((float_of_int x) ** (float_of_int y))
 
 let signature_of_hypothesis context =
@@ -59,12 +114,15 @@ let signature_of_hypothesis context =
           Constr.StringSet.union set (Constr.constants_of t))
     Constr.StringSet.empty context
 
-let intersect l1 l2 =
-  let set1 = List.fold_right Constr.StringSet.add l1 Constr.StringSet.empty in
-  let set2 = List.fold_right Constr.StringSet.add l2 Constr.StringSet.empty in
-  Constr.StringSet.elements (Constr.StringSet.inter set1 set2)
+let intersect uris siguris =
+  let set1 = List.fold_right Constr.StringSet.add uris Constr.StringSet.empty in
+  let set2 =
+    List.fold_right Constr.StringSet.add siguris Constr.StringSet.empty
+  in
+  let inter = Constr.StringSet.inter set1 set2 in
+  List.filter (fun s -> Constr.StringSet.mem s inter) uris
 
-let filter_uris_forward ~dbh (main, constants) uris =
+let filter_uris_forward ~dbd (main, constants) uris =
   let main_uris =
     match main with
     | None -> []
@@ -73,39 +131,53 @@ let filter_uris_forward ~dbh (main, constants) uris =
   let full_signature =
     List.fold_right Constr.StringSet.add main_uris constants
   in
-  List.filter (Constr.at_most ~dbh ~where:`Statement full_signature) uris
+  List.filter (Constr.at_most ~dbd ~where:`Statement full_signature) uris
 
-let filter_uris_backward ~dbh signature uris =
+let filter_uris_backward ~dbd ~facts signature uris =
   let siguris =
-    List.map snd (MetadataConstraints.sigmatch ~dbh ~where:`Statement signature)
+    List.map snd 
+      (MetadataConstraints.sigmatch ~dbd ~facts ~where:`Statement signature)
   in
-  intersect uris siguris
+    intersect uris siguris 
 
 let compare_goal_list proof goal1 goal2 =
   let _,metasenv,_,_ = proof in
   let (_, ey1, ty1) = CicUtil.lookup_meta goal1 metasenv in
   let (_, ey2, ty2) =  CicUtil.lookup_meta goal2 metasenv in
-  let ty_sort1 = CicTypeChecker.type_of_aux' metasenv ey1 ty1 in
-  let ty_sort2 = CicTypeChecker.type_of_aux' metasenv ey2 ty2 in
+  let ty_sort1,_ = 
+    CicTypeChecker.type_of_aux' metasenv ey1 ty1 CicUniv.empty_ugraph 
+  in
+  let ty_sort2,_ = 
+    CicTypeChecker.type_of_aux' metasenv ey2 ty2 CicUniv.empty_ugraph 
+  in
   let prop1 =
-    if CicReduction.are_convertible ey1 (Cic.Sort Cic.Prop) ty_sort1 then 0
-    else 1
+    let b,_ = 
+      CicReduction.are_convertible 
+	ey1 (Cic.Sort Cic.Prop) ty_sort1 CicUniv.empty_ugraph 
+    in
+      if b then 0
+      else 1
   in
   let prop2 =
-    if CicReduction.are_convertible ey2 (Cic.Sort Cic.Prop) ty_sort2 then 0
-    else 1
+    let b,_ = 
+      CicReduction.are_convertible 
+	ey2 (Cic.Sort Cic.Prop) ty_sort2 CicUniv.empty_ugraph 
+    in 
+      if b then 0
+      else 1
   in
   prop1 - prop2
 
-let hint ~(dbh:Dbi.connection) ?signature ((proof, goal) as status) =
+let hint ~(dbd:Mysql.dbd) ?(facts=false) ?signature ((proof, goal) as status) =
   let (_, metasenv, _, _) = proof in
   let (_, context, ty) = CicUtil.lookup_meta goal metasenv in
   let (uris, (main, sig_constants)) =
     match signature with
-    | Some signature -> (Constr.sigmatch ~dbh signature, signature)
-    | None -> (Constr.cmatch' ~dbh ty, Constr.signature_of ty)
+    | Some signature -> (Constr.sigmatch ~dbd ~facts signature, signature)
+    | None -> (Constr.cmatch' ~dbd ~facts ty, Constr.signature_of ty)
   in
   let uris = List.filter nonvar (List.map snd uris) in
+  let uris = List.filter Hashtbl_equiv.not_a_duplicate uris in
   let types_constants =
     match main with
     | None -> Constr.StringSet.empty
@@ -116,25 +188,27 @@ let hint ~(dbh:Dbi.connection) ?signature ((proof, goal) as status) =
   let hyp_constants =
     Constr.StringSet.diff (signature_of_hypothesis context) types_constants
   in
+(* Constr.StringSet.iter prerr_endline hyp_constants; *)
   let other_constants = Constr.StringSet.union sig_constants hyp_constants in
   let uris = 
-    if (List.length uris < 2 ** (Constr.StringSet.cardinal other_constants))
+    let pow = 2 ** (Constr.StringSet.cardinal other_constants) in
+    if ((List.length uris < pow) or (pow <= 0))
     then begin
       prerr_endline "MetadataQuery: large sig, falling back to old method";
-      filter_uris_forward ~dbh (main, other_constants) uris
+      filter_uris_forward ~dbd (main, other_constants) uris
     end else
-      filter_uris_backward ~dbh (main, other_constants) uris
+      filter_uris_backward ~dbd ~facts (main, other_constants) uris
   in
-prerr_endline "URIS";
-List.iter prerr_endline uris;
   let rec aux = function
     | [] -> []
     | uri :: tl ->
         (let status' =
             try
               let (proof, goal_list) =
-                ProofEngineTypes.apply_tactic
-                  (PrimitiveTactics.apply_tac ~term:(CicUtil.term_of_uri uri))
+(*                prerr_endline ("STO APPLICANDO " ^ uri); *)
+		PET.apply_tactic
+                  (PrimitiveTactics.apply_tac
+		    ~term:(CicUtil.term_of_uri uri))
                   status
               in
               let goal_list =
@@ -146,8 +220,89 @@ List.iter prerr_endline uris;
           match status' with
           | None -> aux tl
           | Some status' ->
-              prerr_endline ("HO APPLICATO " ^ uri);
               status' :: aux tl)
   in
-  aux uris
+  List.stable_sort
+    (fun (_, (_, goals1)) (_, (_, goals2)) ->
+      Pervasives.compare (List.length goals1) (List.length goals2))
+    (aux uris)
+
+(* experimental_hint is a version of hint for experimental 
+    purposes. It uses auto_tac_verbose instead of auto tac.
+    Auto_tac verbose also returns a substitution - for the moment 
+    as a function from cic to cic, to be changed into an association
+    list in the future -. This substitution is used to build a
+    hash table of the inspected goals with their associated proofs.
+    The cose is a cut and paste of the previous one: at the end 
+    of the experimentation we shall make a choice. *)
+
+let experimental_hint 
+  ~(dbd:Mysql.dbd) ?(facts=false) ?signature ((proof, goal) as status) =
+  let (_, metasenv, _, _) = proof in
+  let (_, context, ty) = CicUtil.lookup_meta goal metasenv in
+  let (uris, (main, sig_constants)) =
+    match signature with
+    | Some signature -> 
+	(Constr.sigmatch ~dbd ~facts signature, signature)
+    | None -> 
+	(Constr.cmatch' ~dbd ~facts ty, Constr.signature_of ty)
+  in
+  let uris = List.filter nonvar (List.map snd uris) in
+  let uris = List.filter Hashtbl_equiv.not_a_duplicate uris in
+  let types_constants =
+    match main with
+    | None -> Constr.StringSet.empty
+    | Some (main, types) ->
+        List.fold_right Constr.StringSet.add (main :: types)
+          Constr.StringSet.empty
+  in
+  let hyp_constants =
+    Constr.StringSet.diff (signature_of_hypothesis context) types_constants
+  in
+(* Constr.StringSet.iter prerr_endline hyp_constants; *)
+  let other_constants = Constr.StringSet.union sig_constants hyp_constants in
+  let uris = 
+    let pow = 2 ** (Constr.StringSet.cardinal other_constants) in
+    if ((List.length uris < pow) or (pow <= 0))
+    then begin
+      prerr_endline "MetadataQuery: large sig, falling back to old method";
+      filter_uris_forward ~dbd (main, other_constants) uris
+    end else
+      filter_uris_backward ~dbd ~facts (main, other_constants) uris
+  in
+  let rec aux = function
+    | [] -> []
+    | uri :: tl ->
+        (let status' =
+            try
+              let (subst,(proof, goal_list)) =
+                  (* prerr_endline ("STO APPLICANDO" ^ uri); *)
+                  PrimitiveTactics.apply_tac_verbose 
+		    ~term:(CicUtil.term_of_uri uri)
+                  status
+              in
+              let goal_list =
+                List.stable_sort (compare_goal_list proof) goal_list
+              in
+              Some (uri, (subst,(proof, goal_list)))
+            with ProofEngineTypes.Fail _ -> None
+          in
+          match status' with
+          | None -> aux tl
+          | Some status' -> status' :: aux tl)
+  in
+  List.stable_sort
+    (fun (_,(_, (_, goals1))) (_,(_, (_, goals2))) ->
+      Pervasives.compare (List.length goals1) (List.length goals2))
+    (aux uris)
+
+let elim ~dbd uri =
+  let constraints =
+    [`Rel [`MainConclusion None];
+     `Sort (Cic.Prop,[`MainHypothesis (Some 1)]);
+     `Obj (uri,[`MainHypothesis (Some 0)]);
+     `Obj (uri,[`InHypothesis]);
+    ]
+  in
+  MetadataConstraints.at_least ~dbd constraints