exception AlreadyDefined of UriManager.uri
+let auxiliary_lemmas_hashtbl = UriManager.UriHashtbl.create 29
+
+(* uri |--> (derived_coercions_in_the_coercion_DB, derived_coercions_in_lib)
+ *
+ * in case of remove_coercion uri, the first component is removed from the
+ * coercion DB, while the second is passed to remove_obj (and is not [] only if
+ * add_coercion is called with add_composites
+ * *)
+let coercion_hashtbl = UriManager.UriHashtbl.create 3
+
+let merge_coercions obj =
+ let module C = Cic in
+ let rec aux2 = (fun (u,t) -> u,aux t)
+ and aux = function
+ | C.Rel _ | C.Sort _ as t -> t
+ | C.Meta _ | C.Implicit _ -> assert false
+ | C.Cast (te,ty) -> C.Cast (aux te, aux ty)
+ | C.Prod (name,so,dest) ->
+ C.Prod (name, aux so, aux dest)
+ | C.Lambda (name,so,dest) ->
+ C.Lambda (name, aux so, aux dest)
+ | C.LetIn (name,so,dest) ->
+ C.LetIn (name, aux so, aux dest)
+ | (Cic.Appl [ c1 ; (Cic.Appl [c2; head]) ]) as t when
+ CoercGraph.is_a_coercion c1 && CoercGraph.is_a_coercion c2 ->
+ let source_carr = CoercGraph.source_of c2 in
+ let tgt_carr = CoercGraph.target_of c1 in
+ (match CoercGraph.look_for_coercion source_carr tgt_carr
+ with
+ | CoercGraph.SomeCoercion c -> Cic.Appl [ c ; head ]
+ | _ -> assert false) (* the composite coercion must exist *)
+ | C.Appl l -> C.Appl (List.map aux l)
+ | C.Var (uri,exp_named_subst) ->
+ let exp_named_subst = List.map aux2 exp_named_subst in
+ C.Var (uri, exp_named_subst)
+ | C.Const (uri,exp_named_subst) ->
+ let exp_named_subst = List.map aux2 exp_named_subst in
+ C.Const (uri, exp_named_subst)
+ | C.MutInd (uri,tyno,exp_named_subst) ->
+ let exp_named_subst = List.map aux2 exp_named_subst in
+ C.MutInd (uri,tyno,exp_named_subst)
+ | C.MutConstruct (uri,tyno,consno,exp_named_subst) ->
+ let exp_named_subst = List.map aux2 exp_named_subst in
+ C.MutConstruct (uri,tyno,consno,exp_named_subst)
+ | C.MutCase (uri,tyno,out,te,pl) ->
+ let pl = List.map aux pl in
+ C.MutCase (uri,tyno,aux out,aux te,pl)
+ | C.Fix (fno, fl) ->
+ let fl = List.map (fun (name,idx,ty,bo)->(name,idx,aux ty,aux bo)) fl in
+ C.Fix (fno, fl)
+ | C.CoFix (fno, fl) ->
+ let fl = List.map (fun (name,ty,bo) -> (name, aux ty, aux bo)) fl in
+ C.CoFix (fno, fl)
+ in
+ match obj with
+ | C.Constant (id, body, ty, params, attrs) ->
+ let body =
+ match body with
+ | None -> None
+ | Some body -> Some (aux body)
+ in
+ let ty = aux ty in
+ C.Constant (id, body, ty, params, attrs)
+ | C.Variable (name, body, ty, params, attrs) ->
+ let body =
+ match body with
+ | None -> None
+ | Some body -> Some (aux body)
+ in
+ let ty = aux ty in
+ C.Variable (name, body, ty, params, attrs)
+ | C.CurrentProof (_name, _conjectures, _body, _ty, _params, _attrs) ->
+ assert false
+ | C.InductiveDefinition (indtys, params, leftno, attrs) ->
+ let indtys =
+ List.map
+ (fun (name, ind, arity, cl) ->
+ let arity = aux arity in
+ let cl = List.map (fun (name, ty) -> (name,aux ty)) cl in
+ (name, ind, arity, cl))
+ indtys
+ in
+ C.InductiveDefinition (indtys, params, leftno, attrs)
+
let uris_of_obj uri =
let innertypesuri = UriManager.innertypesuri_of_uri uri in
let bodyuri = UriManager.bodyuri_of_uri uri in
fun ~dbd ~uri ->
profiler.HExtlib.profile (fun uri -> MetadataDb.index_obj ~dbd ~uri) uri
-let add_obj uri obj ~basedir =
+let add_single_obj uri obj ~basedir =
+ let obj =
+ if List.mem `Generated (CicUtil.attributes_of_obj obj) &&
+ not (CoercGraph.is_a_coercion (Cic.Const (uri, [])))
+ then
+ merge_coercions obj
+ else
+ obj
+ in
let dbd = LibraryDb.instance () in
if CicEnvironment.in_library uri then
raise (AlreadyDefined uri)
raise exc
end
-let remove_obj uri =
+let remove_single_obj uri =
let derived_uris_of_uri uri =
let innertypesuri, bodyuri, univgraphuri = uris_of_obj uri in
innertypesuri::univgraphuri::(match bodyuri with None -> [] | Some u -> [u])
HExtlib.rmdir_descend (Filename.dirname file)
with Http_getter_types.Key_not_found _ -> ());
ignore (LibraryDb.remove_uri uri);
- CoercDb.remove_coercion (fun (_,_,u) -> UriManager.eq u uri);
+ (*CoercGraph.remove_coercion uri;*)
CicEnvironment.remove_obj uri)
to_remove
+
+(*** GENERATION OF AUXILIARY LEMMAS ***)
+
+let generate_elimination_principles ~basedir uri =
+ let uris = ref [] in
+ let elim sort =
+ try
+ let uri,obj = CicElim.elim_of ~sort uri 0 in
+ add_single_obj uri obj ~basedir;
+ uris := uri :: !uris
+ with CicElim.Can_t_eliminate -> ()
+ in
+ try
+ List.iter elim [ Cic.Prop; Cic.Set; (Cic.Type (CicUniv.fresh ())) ];
+ !uris
+ with exn ->
+ List.iter remove_single_obj !uris;
+ raise exn
+
+(* COERCIONS ***********************************************************)
+
+let remove_all_coercions () =
+ UriManager.UriHashtbl.clear coercion_hashtbl;
+ CoercDb.remove_coercion (fun (_,_,u1) -> true)
+
+let add_coercion ~basedir ~add_composites uri =
+ let coer_ty,_ =
+ let coer = CicUtil.term_of_uri uri in
+ CicTypeChecker.type_of_aux' [] [] coer CicUniv.empty_ugraph
+ in
+ (* we have to get the source and the tgt type uri
+ * in Coq syntax we have already their names, but
+ * since we don't support Funclass and similar I think
+ * all the coercion should be of the form
+ * (A:?)(B:?)T1->T2
+ * So we should be able to extract them from the coercion type
+ *
+ * Currently only (_:T1)T2 is supported.
+ * should we saturate it with metas in case we insert it?
+ *
+ *)
+ let extract_last_two_p ty =
+ let rec aux = function
+ | Cic.Prod( _, src, Cic.Prod (n,t1,t2)) ->
+ assert false
+ (* not implemented: aux (Cic.Prod(n,t1,t2)) *)
+ | Cic.Prod( _, src, tgt) -> src, tgt
+ | _ -> assert false
+ in
+ aux ty
+ in
+ let ty_src, ty_tgt = extract_last_two_p coer_ty in
+ let src_uri = CoercDb.coerc_carr_of_term (CicReduction.whd [] ty_src) in
+ let tgt_uri = CoercDb.coerc_carr_of_term (CicReduction.whd [] ty_tgt) in
+ let new_coercions = CicCoercion.close_coercion_graph src_uri tgt_uri uri in
+ let composite_uris = List.map (fun (_,_,uri,_) -> uri) new_coercions in
+ (* update the DB *)
+ List.iter
+ (fun (src,tgt,uri,_) -> CoercDb.add_coercion (src,tgt,uri))
+ new_coercions;
+ CoercDb.add_coercion (src_uri, tgt_uri, uri);
+ (* add the composites obj and they eventual lemmas *)
+ let lemmas =
+ if add_composites then
+ List.fold_left
+ (fun acc (_,_,uri,obj) ->
+ add_single_obj ~basedir uri obj;
+ uri::acc)
+ composite_uris new_coercions
+ else
+ []
+ in
+ (* store that composite_uris are related to uri. the first component is the
+ * stuff in the DB while the second is stuff for remove_obj *)
+ UriManager.UriHashtbl.add coercion_hashtbl uri
+ (composite_uris,if add_composites then composite_uris else []);
+ lemmas
+
+let remove_coercion uri =
+ try
+ let (composites_in_db, composites_in_lib) =
+ UriManager.UriHashtbl.find coercion_hashtbl uri
+ in
+ UriManager.UriHashtbl.remove coercion_hashtbl uri;
+ CoercDb.remove_coercion (fun (_,_,u) -> UriManager.eq uri u);
+ (* remove from the DB *)
+ List.iter
+ (fun u -> CoercDb.remove_coercion (fun (_,_,u1) -> UriManager.eq u u1))
+ composites_in_db;
+ (* remove composites from the lib *)
+ List.iter remove_single_obj composites_in_lib
+ with
+ Not_found -> () (* mhh..... *)
+
+
+let generate_projections ~basedir uri fields =
+ let uris = ref [] in
+ let projections = CicRecord.projections_of uri (List.map fst fields) in
+ try
+ List.iter2
+ (fun (uri, name, bo) (_name, coercion) ->
+ try
+ let ty, ugraph =
+ CicTypeChecker.type_of_aux' [] [] bo CicUniv.empty_ugraph in
+ let attrs = [`Class `Projection; `Generated] in
+ let obj = Cic.Constant (name,Some bo,ty,[],attrs) in
+
+ add_single_obj ~basedir uri obj;
+ let composites =
+ if coercion then
+ add_coercion ~basedir ~add_composites:true uri
+ else
+ []
+ in
+ uris := uri :: composites @ !uris
+ with
+ CicTypeChecker.TypeCheckerFailure s ->
+ HLog.message
+ ("Unable to create projection " ^ name ^ " cause: " ^ Lazy.force s);
+ | CicEnvironment.Object_not_found uri ->
+ let depend = UriManager.name_of_uri uri in
+ HLog.message
+ ("Unable to create projection " ^ name ^ " because it requires " ^
+ depend)
+ ) projections fields;
+ !uris
+ with exn ->
+ List.iter remove_single_obj !uris;
+ raise exn
+
+
+let add_obj uri obj ~basedir =
+ add_single_obj uri obj ~basedir;
+ let uris = ref [] in
+ try
+ begin
+ match obj with
+ | Cic.Constant _ -> ()
+ | Cic.InductiveDefinition (_,_,_,attrs) ->
+ uris := !uris @ generate_elimination_principles ~basedir uri;
+ let rec get_record_attrs =
+ function
+ | [] -> None
+ | (`Class (`Record fields))::_ -> Some fields
+ | _::tl -> get_record_attrs tl
+ in
+ (match get_record_attrs attrs with
+ | None -> () (* not a record *)
+ | Some fields ->
+ uris := !uris @ (generate_projections ~basedir uri fields))
+ | Cic.CurrentProof _
+ | Cic.Variable _ -> assert false
+ end;
+ UriManager.UriHashtbl.add auxiliary_lemmas_hashtbl uri !uris;
+ !uris
+ with exn ->
+ List.iter remove_single_obj !uris;
+ raise exn
+
+let remove_obj uri =
+ let uris =
+ try
+ let res = UriManager.UriHashtbl.find auxiliary_lemmas_hashtbl uri in
+ UriManager.UriHashtbl.remove auxiliary_lemmas_hashtbl uri;
+ res
+ with
+ Not_found -> [] (*assert false*)
+ in
+ List.iter remove_single_obj (uri::uris)
+
projects / helm.git / blobdiff