Ast.AttributedTerm (`IdRef id, t)
;;
+let level_of_uri u =
+ let name = NUri.name_of_uri u in
+ assert(String.length name > String.length "Type");
+ String.sub name 4 (String.length name - 4)
+;;
+
+let destroy_nat =
+ let is_nat_URI = NUri.eq (NUri.uri_of_string
+ "cic:/matita/ng/arithmetics/nat/nat.ind") in
+ let is_zero = function
+ | NCic.Const (NReference.Ref (uri, NReference.Con (0, 1, 0))) when
+ is_nat_URI uri -> true
+ | _ -> false
+ in
+ let is_succ = function
+ | NCic.Const (NReference.Ref (uri, NReference.Con (0, 2, 0))) when
+ is_nat_URI uri -> true
+ | _ -> false
+ in
+ let rec aux acc = function
+ | NCic.Appl [he ; tl] when is_succ he -> aux (acc + 1) tl
+ | t when is_zero t -> Some acc
+ | _ -> None
+ in
+ aux 0
+
(* CODICE c&p da NCicPp *)
let nast_of_cic0 status
~(idref:
idref (Ast.Meta
(n, List.map (fun x -> Some (k ~context (NCicSubstitution.lift s x))) l))
| NCic.Sort NCic.Prop -> idref (Ast.Sort `Prop)
- | NCic.Sort NCic.Type _ -> idref (Ast.Sort `Set)
- (* CSC: | C.Sort (C.Type []) -> F.fprintf f "Type0"
- | C.Sort (C.Type [false, u]) -> F.fprintf f "%s" (NUri.name_of_uri u)
- | C.Sort (C.Type [true, u]) -> F.fprintf f "S(%s)" (NUri.name_of_uri u)
- | C.Sort (C.Type l) ->
- F.fprintf f "Max(";
- aux ctx (C.Sort (C.Type [List.hd l]));
- List.iter (fun x -> F.fprintf f ",";aux ctx (C.Sort (C.Type [x])))
- (List.tl l);
- F.fprintf f ")"*)
- (* CSC: qua siamo grezzi *)
+ | NCic.Sort NCic.Type [] -> idref (Ast.Sort `Set)
+ | NCic.Sort NCic.Type ((`Type,u)::_) ->
+ idref(Ast.Sort (`NType (level_of_uri u)))
+ | NCic.Sort NCic.Type ((`CProp,u)::_) ->
+ idref(Ast.Sort (`NCProp (level_of_uri u)))
+ | NCic.Sort NCic.Type ((`Succ,u)::_) ->
+ idref(Ast.Sort (`NType (level_of_uri u ^ "+1")))
| NCic.Implicit `Hole -> idref (Ast.UserInput)
| NCic.Implicit `Vector -> idref (Ast.Implicit `Vector)
| NCic.Implicit _ -> idref (Ast.Implicit `JustOne)
| NCic.Lambda (n,s,t) ->
idref (Ast.Binder (`Lambda,(Ast.Ident (n,None), Some (k ~context s)),
k ~context:((n,NCic.Decl s)::context) t))
+ | NCic.LetIn (n,s,ty,NCic.Rel 1) ->
+ idref (Ast.Cast (k ~context ty, k ~context s))
| NCic.LetIn (n,s,ty,t) ->
- idref (Ast.LetIn ((Ast.Ident (n,None), Some (k ~context ty)), k ~context s,
- k ~context:((n,NCic.Decl s)::context) t))
+ idref (Ast.LetIn ((Ast.Ident (n,None), Some (k ~context s)), k ~context
+ ty, k ~context:((n,NCic.Decl s)::context) t))
| NCic.Appl (NCic.Meta (n,lc) :: args) when List.mem_assoc n subst ->
let _,_,t,_ = List.assoc n subst in
let hd = NCicSubstitution.subst_meta lc t in
| NCic.Appl l -> NCic.Appl (l@args)
| _ -> NCic.Appl (hd :: args)))
| NCic.Appl args as t ->
- let args =
- if not !Acic2content.hide_coercions then args
- else
- match
- NCicCoercion.match_coercion status ~metasenv ~context ~subst t
- with
- | None -> args
- | Some (_,sats,cpos) ->
+ (match destroy_nat t with
+ | Some n -> idref (Ast.Num (string_of_int n, -1))
+ | None ->
+ let args =
+ if not !Acic2content.hide_coercions then args
+ else
+ match
+ NCicCoercion.match_coercion status ~metasenv ~context ~subst t
+ with
+ | None -> args
+ | Some (_,sats,cpos) ->
(* CSC: sats e' il numero di pi, ma non so cosa farmene! voglio il numero di
argomenti da saltare, come prima! *)
- if cpos < List.length args - 1 then
- List.nth args (cpos + 1) ::
- try snd (HExtlib.split_nth (cpos+sats+2) args) with Failure _->[]
- else
- args
- in
- (match args with
- [arg] -> idref (k ~context arg)
- | _ -> idref (Ast.Appl (List.map (k ~context) args)))
+ if cpos < List.length args - 1 then
+ List.nth args (cpos + 1) ::
+ try snd (HExtlib.split_nth (cpos+sats+2) args)
+ with Failure _->[]
+ else
+ args
+ in
+ (match args with
+ [arg] -> idref (k ~context arg)
+ | _ -> idref (Ast.Appl (List.map (k ~context) args))))
| NCic.Match (NReference.Ref (uri,_) as r,outty,te,patterns) ->
let name = NUri.name_of_uri uri in
(* CSC
let object_prefix = "obj:";;
let declaration_prefix = "decl:";;
let definition_prefix = "def:";;
+let inductive_prefix = "ind:";;
+let joint_prefix = "joint:";;
let get_id =
function
(*CSC: used to be the previous line, that uses seed *)
Some (List.map (nmap_sequent0 status ~idref ~metasenv ~subst) metasenv)
in
+let build_constructors seed l =
+ List.map
+ (fun (_,n,ty) ->
+ let ty = nast_of_cic ~context:[] ty in
+ { K.dec_name = Some n;
+ K.dec_id = gen_id declaration_prefix seed;
+ K.dec_inductive = false;
+ K.dec_aref = "";
+ K.dec_type = ty
+ }) l
+in
+let build_inductive b seed =
+ fun (_,n,ty,cl) ->
+ let ty = nast_of_cic ~context:[] ty in
+ `Inductive
+ { K.inductive_id = gen_id inductive_prefix seed;
+ K.inductive_name = n;
+ K.inductive_kind = b;
+ K.inductive_type = ty;
+ K.inductive_constructors = build_constructors seed cl
+ }
+in
+let build_fixpoint b seed =
+ fun (_,n,_,ty,t) ->
+ let t = nast_of_cic ~context:[] t in
+ let ty = nast_of_cic ~context:[] ty in
+ `Definition
+ { K.def_id = gen_id inductive_prefix seed;
+ K.def_name = Some n;
+ K.def_aref = "";
+ K.def_type = ty;
+ K.def_term = t;
+ }
+in
let res =
match kind with
- NCic.Constant (_,_,Some bo,ty,_) ->
+ | NCic.Fixpoint (is_rec, ifl, _) ->
+ (gen_id object_prefix seed, [], conjectures,
+ `Joint
+ { K.joint_id = gen_id joint_prefix seed;
+ K.joint_kind =
+ if is_rec then
+ `Recursive (List.map (fun (_,_,i,_,_) -> i) ifl)
+ else `CoRecursive;
+ K.joint_defs = List.map (build_fixpoint is_rec seed) ifl
+ })
+ | NCic.Inductive (is_ind, lno, itl, _) ->
+ (gen_id object_prefix seed, [], conjectures,
+ `Joint
+ { K.joint_id = gen_id joint_prefix seed;
+ K.joint_kind =
+ if is_ind then `Inductive lno else `CoInductive lno;
+ K.joint_defs = List.map (build_inductive is_ind seed) itl
+ })
+ | NCic.Constant (_,_,Some bo,ty,_) ->
let ty = nast_of_cic ~context:[] ty in
let bo = nast_of_cic ~context:[] bo in
(gen_id object_prefix seed, [], conjectures,
`Decl (K.Const,
(*CSC: ??? get_id ty here used to be the id of the axiom! *)
build_decl_item seed (get_id ty) (NUri.name_of_uri uri) ty))
-(*
- | C.AInductiveDefinition (id,l,params,nparams,_) ->
- (gen_id object_prefix seed, params, conjectures,
- `Joint
- { K.joint_id = gen_id joint_prefix seed;
- K.joint_kind = `Inductive nparams;
- K.joint_defs = List.map (build_inductive seed) l
- })
-
-and
- build_inductive seed =
- let module K = Content in
- fun (_,n,b,ty,l) ->
- `Inductive
- { K.inductive_id = gen_id inductive_prefix seed;
- K.inductive_name = n;
- K.inductive_kind = b;
- K.inductive_type = ty;
- K.inductive_constructors = build_constructors seed l
- }
-
-and
- build_constructors seed l =
- let module K = Content in
- List.map
- (fun (n,t) ->
- { K.dec_name = Some n;
- K.dec_id = gen_id declaration_prefix seed;
- K.dec_inductive = false;
- K.dec_aref = "";
- K.dec_type = t
- }) l
-*)
in
res,ids_to_refs
;;