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-rw-r--r--lib/genarg.ml325
1 files changed, 210 insertions, 115 deletions
diff --git a/lib/genarg.ml b/lib/genarg.ml
index cba54c114..7aada461f 100644
--- a/lib/genarg.ml
+++ b/lib/genarg.ml
@@ -9,37 +9,61 @@
open Pp
open Util
+module ValT = Dyn.Make(struct end)
+module ArgT = Dyn.Make(struct end)
+
+module Val =
+struct
+
+ type 'a typ = 'a ValT.tag
+
+ type _ tag =
+ | Base : 'a typ -> 'a tag
+ | List : 'a tag -> 'a list tag
+ | Opt : 'a tag -> 'a option tag
+ | Pair : 'a tag * 'b tag -> ('a * 'b) tag
+
+ type t = Dyn : 'a tag * 'a -> t
+
+ let rec eq : type a b. a tag -> b tag -> (a, b) CSig.eq option =
+ fun t1 t2 -> match t1, t2 with
+ | Base t1, Base t2 -> ValT.eq t1 t2
+ | List t1, List t2 ->
+ begin match eq t1 t2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+ | Opt t1, Opt t2 ->
+ begin match eq t1 t2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+ | Pair (t1, u1), Pair (t2, u2) ->
+ begin match eq t1 t2 with
+ | None -> None
+ | Some Refl ->
+ match eq u1 u2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+ | _ -> None
+
+ let rec repr : type a. a tag -> std_ppcmds = function
+ | Base t -> str (ValT.repr t)
+ | List t -> repr t ++ spc () ++ str "list"
+ | Opt t -> repr t ++ spc () ++ str "option"
+ | Pair (t1, t2) -> str "(" ++ repr t1 ++ str " * " ++ repr t2 ++ str ")"
+
+end
+
type argument_type =
- (* Basic types *)
- | IntOrVarArgType
- | IdentArgType
- | VarArgType
(* Specific types *)
- | GenArgType
- | ConstrArgType
- | ConstrMayEvalArgType
- | QuantHypArgType
- | OpenConstrArgType
- | ConstrWithBindingsArgType
- | BindingsArgType
- | RedExprArgType
| ListArgType of argument_type
| OptArgType of argument_type
| PairArgType of argument_type * argument_type
| ExtraArgType of string
let rec argument_type_eq arg1 arg2 = match arg1, arg2 with
-| IntOrVarArgType, IntOrVarArgType -> true
-| IdentArgType, IdentArgType -> true
-| VarArgType, VarArgType -> true
-| GenArgType, GenArgType -> true
-| ConstrArgType, ConstrArgType -> true
-| ConstrMayEvalArgType, ConstrMayEvalArgType -> true
-| QuantHypArgType, QuantHypArgType -> true
-| OpenConstrArgType, OpenConstrArgType -> true
-| ConstrWithBindingsArgType, ConstrWithBindingsArgType -> true
-| BindingsArgType, BindingsArgType -> true
-| RedExprArgType, RedExprArgType -> true
| ListArgType arg1, ListArgType arg2 -> argument_type_eq arg1 arg2
| OptArgType arg1, OptArgType arg2 -> argument_type_eq arg1 arg2
| PairArgType (arg1l, arg1r), PairArgType (arg2l, arg2r) ->
@@ -48,17 +72,6 @@ let rec argument_type_eq arg1 arg2 = match arg1, arg2 with
| _ -> false
let rec pr_argument_type = function
-| IntOrVarArgType -> str "int_or_var"
-| IdentArgType -> str "ident"
-| VarArgType -> str "var"
-| GenArgType -> str "genarg"
-| ConstrArgType -> str "constr"
-| ConstrMayEvalArgType -> str "constr_may_eval"
-| QuantHypArgType -> str "qhyp"
-| OpenConstrArgType -> str "open_constr"
-| ConstrWithBindingsArgType -> str "constr_with_bindings"
-| BindingsArgType -> str "bindings"
-| RedExprArgType -> str "redexp"
| ListArgType t -> pr_argument_type t ++ spc () ++ str "list"
| OptArgType t -> pr_argument_type t ++ spc () ++ str "opt"
| PairArgType (t1, t2) ->
@@ -66,55 +79,129 @@ let rec pr_argument_type = function
str "*" ++ spc () ++ pr_argument_type t2 ++ str ")"
| ExtraArgType s -> str s
-type ('raw, 'glob, 'top) genarg_type = argument_type
+type (_, _, _) genarg_type =
+| ExtraArg : ('a * 'b * 'c) ArgT.tag -> ('a, 'b, 'c) genarg_type
+| ListArg : ('a, 'b, 'c) genarg_type -> ('a list, 'b list, 'c list) genarg_type
+| OptArg : ('a, 'b, 'c) genarg_type -> ('a option, 'b option, 'c option) genarg_type
+| PairArg : ('a1, 'b1, 'c1) genarg_type * ('a2, 'b2, 'c2) genarg_type ->
+ ('a1 * 'a2, 'b1 * 'b2, 'c1 * 'c2) genarg_type
+
+let rec genarg_type_eq : type a1 a2 b1 b2 c1 c2.
+ (a1, b1, c1) genarg_type -> (a2, b2, c2) genarg_type ->
+ (a1 * b1 * c1, a2 * b2 * c2) CSig.eq option =
+fun t1 t2 -> match t1, t2 with
+| ExtraArg t1, ExtraArg t2 -> ArgT.eq t1 t2
+| ListArg t1, ListArg t2 ->
+ begin match genarg_type_eq t1 t2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+| OptArg t1, OptArg t2 ->
+ begin match genarg_type_eq t1 t2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+| PairArg (t1, u1), PairArg (t2, u2) ->
+ begin match genarg_type_eq t1 t2 with
+ | None -> None
+ | Some Refl ->
+ match genarg_type_eq u1 u2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+| _ -> None
type 'a uniform_genarg_type = ('a, 'a, 'a) genarg_type
(** Alias for concision *)
(* Dynamics but tagged by a type expression *)
-type rlevel
-type glevel
-type tlevel
+type rlevel = [ `rlevel ]
+type glevel = [ `glevel ]
+type tlevel = [ `tlevel ]
-type 'a generic_argument = argument_type * Obj.t
-type raw_generic_argument = rlevel generic_argument
-type glob_generic_argument = glevel generic_argument
-type typed_generic_argument = tlevel generic_argument
-
-let rawwit t = t
-let glbwit t = t
-let topwit t = t
+type _ level =
+| Rlevel : rlevel level
+| Glevel : glevel level
+| Tlevel : tlevel level
-let wit_list t = ListArgType t
+type (_, _) abstract_argument_type =
+| Rawwit : ('a, 'b, 'c) genarg_type -> ('a, rlevel) abstract_argument_type
+| Glbwit : ('a, 'b, 'c) genarg_type -> ('b, glevel) abstract_argument_type
+| Topwit : ('a, 'b, 'c) genarg_type -> ('c, tlevel) abstract_argument_type
-let wit_opt t = OptArgType t
+type 'l generic_argument = GenArg : ('a, 'l) abstract_argument_type * 'a -> 'l generic_argument
-let wit_pair t1 t2 = PairArgType (t1,t2)
-
-let in_gen t o = (t,Obj.repr o)
-let out_gen t (t',o) = if argument_type_eq t t' then Obj.magic o else failwith "out_gen"
-let genarg_tag (s,_) = s
-
-let has_type (t, v) u = argument_type_eq t u
+type raw_generic_argument = rlevel generic_argument
+type glob_generic_argument = glevel generic_argument
+type typed_generic_argument = tlevel generic_argument
-let unquote x = x
+let rawwit t = Rawwit t
+let glbwit t = Glbwit t
+let topwit t = Topwit t
+
+let wit_list t = ListArg t
+
+let wit_opt t = OptArg t
+
+let wit_pair t1 t2 = PairArg (t1, t2)
+
+let in_gen t o = GenArg (t, o)
+
+let abstract_argument_type_eq :
+ type a b l. (a, l) abstract_argument_type -> (b, l) abstract_argument_type -> (a, b) CSig.eq option =
+ fun t1 t2 -> match t1, t2 with
+ | Rawwit t1, Rawwit t2 ->
+ begin match genarg_type_eq t1 t2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+ | Glbwit t1, Glbwit t2 ->
+ begin match genarg_type_eq t1 t2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+ | Topwit t1, Topwit t2 ->
+ begin match genarg_type_eq t1 t2 with
+ | None -> None
+ | Some Refl -> Some Refl
+ end
+
+let out_gen (type a) (type l) (t : (a, l) abstract_argument_type) (o : l generic_argument) : a =
+ let GenArg (t', v) = o in
+ match abstract_argument_type_eq t t' with
+ | None -> failwith "out_gen"
+ | Some Refl -> v
+
+let has_type (GenArg (t, v)) u = match abstract_argument_type_eq t u with
+| None -> false
+| Some _ -> true
+
+let rec untype : type a b c. (a, b, c) genarg_type -> argument_type = function
+| ExtraArg t -> ExtraArgType (ArgT.repr t)
+| ListArg t -> ListArgType (untype t)
+| OptArg t -> OptArgType (untype t)
+| PairArg (t1, t2) -> PairArgType (untype t1, untype t2)
+
+let unquote : type l. (_, l) abstract_argument_type -> _ = function
+| Rawwit t -> untype t
+| Glbwit t -> untype t
+| Topwit t -> untype t
+
+let genarg_tag (GenArg (t, _)) = unquote t
-type ('a,'b) abstract_argument_type = argument_type
type 'a raw_abstract_argument_type = ('a,rlevel) abstract_argument_type
type 'a glob_abstract_argument_type = ('a,glevel) abstract_argument_type
type 'a typed_abstract_argument_type = ('a,tlevel) abstract_argument_type
-type ('a, 'b, 'c, 'l) cast = Obj.t
-
-let raw = Obj.obj
-let glb = Obj.obj
-let top = Obj.obj
+type ('a, 'b, 'c, 'l) cast =
+| Rcast : 'a -> ('a, 'b, 'c, rlevel) cast
+| Gcast : 'b -> ('a, 'b, 'c, glevel) cast
+| Tcast : 'c -> ('a, 'b, 'c, tlevel) cast
-type ('r, 'l) unpacker =
- { unpacker : 'a 'b 'c. ('a, 'b, 'c) genarg_type -> ('a, 'b, 'c, 'l) cast -> 'r }
-
-let unpack pack (t, obj) = pack.unpacker t (Obj.obj obj)
+let raw : ('a, 'b, 'c, rlevel) cast -> _ = function Rcast x -> x
+let glb : ('a, 'b, 'c, glevel) cast -> _ = function Gcast x -> x
+let top : ('a, 'b, 'c, tlevel) cast -> _ = function Tcast x -> x
(** Type transformers *)
@@ -122,16 +209,20 @@ type ('r, 'l) list_unpacker =
{ list_unpacker : 'a 'b 'c. ('a, 'b, 'c) genarg_type ->
('a list, 'b list, 'c list, 'l) cast -> 'r }
-let list_unpack pack (t, obj) = match t with
-| ListArgType t -> pack.list_unpacker t (Obj.obj obj)
+let list_unpack (type l) (pack : (_, l) list_unpacker) (GenArg (t, obj) : l generic_argument) = match t with
+| Rawwit (ListArg t) -> pack.list_unpacker t (Rcast obj)
+| Glbwit (ListArg t) -> pack.list_unpacker t (Gcast obj)
+| Topwit (ListArg t) -> pack.list_unpacker t (Tcast obj)
| _ -> failwith "out_gen"
type ('r, 'l) opt_unpacker =
{ opt_unpacker : 'a 'b 'c. ('a, 'b, 'c) genarg_type ->
('a option, 'b option, 'c option, 'l) cast -> 'r }
-let opt_unpack pack (t, obj) = match t with
-| OptArgType t -> pack.opt_unpacker t (Obj.obj obj)
+let opt_unpack (type l) (pack : (_, l) opt_unpacker) (GenArg (t, obj) : l generic_argument) = match t with
+| Rawwit (OptArg t) -> pack.opt_unpacker t (Rcast obj)
+| Glbwit (OptArg t) -> pack.opt_unpacker t (Gcast obj)
+| Topwit (OptArg t) -> pack.opt_unpacker t (Tcast obj)
| _ -> failwith "out_gen"
type ('r, 'l) pair_unpacker =
@@ -139,37 +230,50 @@ type ('r, 'l) pair_unpacker =
('a1, 'b1, 'c1) genarg_type -> ('a2, 'b2, 'c2) genarg_type ->
(('a1 * 'a2), ('b1 * 'b2), ('c1 * 'c2), 'l) cast -> 'r }
-let pair_unpack pack (t, obj) = match t with
-| PairArgType (t1, t2) -> pack.pair_unpacker t1 t2 (Obj.obj obj)
+let pair_unpack (type l) (pack : (_, l) pair_unpacker) (GenArg (t, obj) : l generic_argument) = match t with
+| Rawwit (PairArg (t1, t2)) -> pack.pair_unpacker t1 t2 (Rcast obj)
+| Glbwit (PairArg (t1, t2)) -> pack.pair_unpacker t1 t2 (Gcast obj)
+| Topwit (PairArg (t1, t2)) -> pack.pair_unpacker t1 t2 (Tcast obj)
| _ -> failwith "out_gen"
(** Creating args *)
-let (arg0_map : Obj.t option String.Map.t ref) = ref String.Map.empty
+module type Param = sig type ('raw, 'glb, 'top) t end
+module ArgMap(M : Param) =
+struct
+ type _ pack = Pack : ('raw, 'glb, 'top) M.t -> ('raw * 'glb * 'top) pack
+ include ArgT.Map(struct type 'a t = 'a pack end)
+end
+
+type ('raw, 'glb, 'top) load = {
+ dyn : 'top Val.tag;
+}
+
+module LoadMap = ArgMap(struct type ('r, 'g, 't) t = ('r, 'g, 't) load end)
+
+let arg0_map = ref LoadMap.empty
-let create_arg opt name =
- if String.Map.mem name !arg0_map then
+let create_arg ?dyn name =
+ match ArgT.name name with
+ | Some _ ->
Errors.anomaly (str "generic argument already declared: " ++ str name)
- else
- let () = arg0_map := String.Map.add name (Obj.magic opt) !arg0_map in
- ExtraArgType name
+ | None ->
+ let dyn = match dyn with None -> Val.Base (ValT.create name) | Some dyn -> dyn in
+ let obj = LoadMap.Pack { dyn; } in
+ let name = ArgT.create name in
+ let () = arg0_map := LoadMap.add name obj !arg0_map in
+ ExtraArg name
let make0 = create_arg
-let default_empty_value t =
- let rec aux = function
- | ListArgType _ -> Some (Obj.repr [])
- | OptArgType _ -> Some (Obj.repr None)
- | PairArgType(t1, t2) ->
- (match aux t1, aux t2 with
- | Some v1, Some v2 -> Some (Obj.repr (v1, v2))
- | _ -> None)
- | ExtraArgType s ->
- String.Map.find s !arg0_map
- | _ -> None in
- match aux t with
- | Some v -> Some (Obj.obj v)
- | None -> None
+let rec val_tag : type a b c. (a, b, c) genarg_type -> c Val.tag = function
+| ListArg t -> Val.List (val_tag t)
+| OptArg t -> Val.Opt (val_tag t)
+| PairArg (t1, t2) -> Val.Pair (val_tag t1, val_tag t2)
+| ExtraArg s ->
+ match LoadMap.find s !arg0_map with LoadMap.Pack obj -> obj.dyn
+
+let val_tag = function Topwit t -> val_tag t
(** Registering genarg-manipulating functions *)
@@ -182,30 +286,31 @@ end
module Register (M : GenObj) =
struct
- let arg0_map =
- ref (String.Map.empty : (Obj.t, Obj.t, Obj.t) M.obj String.Map.t)
+ module GenMap = ArgMap(struct type ('r, 'g, 't) t = ('r, 'g, 't) M.obj end)
+ let arg0_map = ref GenMap.empty
let register0 arg f = match arg with
- | ExtraArgType s ->
- if String.Map.mem s !arg0_map then
- let msg = str M.name ++ str " function already registered: " ++ str s in
+ | ExtraArg s ->
+ if GenMap.mem s !arg0_map then
+ let msg = str M.name ++ str " function already registered: " ++ str (ArgT.repr s) in
Errors.anomaly msg
else
- arg0_map := String.Map.add s (Obj.magic f) !arg0_map
+ arg0_map := GenMap.add s (GenMap.Pack f) !arg0_map
| _ -> assert false
let get_obj0 name =
- try String.Map.find name !arg0_map
+ try
+ let GenMap.Pack obj = GenMap.find name !arg0_map in obj
with Not_found ->
- match M.default (ExtraArgType name) with
+ match M.default (ExtraArg name) with
| None ->
- Errors.anomaly (str M.name ++ str " function not found: " ++ str name)
+ Errors.anomaly (str M.name ++ str " function not found: " ++ str (ArgT.repr name))
| Some obj -> obj
(** For now, the following function is quite dummy and should only be applied
to an extra argument type, otherwise, it will badly fail. *)
let obj t = match t with
- | ExtraArgType s -> Obj.magic (get_obj0 s)
+ | ExtraArg s -> get_obj0 s
| _ -> assert false
end
@@ -213,23 +318,13 @@ end
(** Hackish part *)
let arg0_names = ref (String.Map.empty : string String.Map.t)
-(** We use this table to associate a name to a given witness, to use it with
- the extension mechanism. This is REALLY ad-hoc, but I do not know how to
- do so nicely either. *)
-
+
let register_name0 t name = match t with
-| ExtraArgType s ->
+| ExtraArg s ->
+ let s = ArgT.repr s in
let () = assert (not (String.Map.mem s !arg0_names)) in
arg0_names := String.Map.add s name !arg0_names
| _ -> failwith "register_name0"
let get_name0 name =
String.Map.find name !arg0_names
-
-module Unsafe =
-struct
-
-let inj tpe x = (tpe, x)
-let prj (_, x) = x
-
-end
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-02 11:23:11 +0000