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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Names
open Genarg
module TacStore = Store.Make(struct end)
(** Dynamic toplevel values *)
module ValT = 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 typ * 'a -> t
let eq = ValT.eq
let repr = ValT.repr
let create = ValT.create
let pr : type a. a typ -> Pp.std_ppcmds = fun t -> Pp.str (repr t)
let typ_list = ValT.create "list"
let typ_opt = ValT.create "option"
let typ_pair = ValT.create "pair"
let rec inject : type a. a tag -> a -> t = fun tag x -> match tag with
| Base t -> Dyn (t, x)
| List tag -> Dyn (typ_list, List.map (fun x -> inject tag x) x)
| Opt tag -> Dyn (typ_opt, Option.map (fun x -> inject tag x) x)
| Pair (tag1, tag2) ->
Dyn (typ_pair, (inject tag1 (fst x), inject tag2 (snd x)))
end
module ValReprObj =
struct
type ('raw, 'glb, 'top) obj = 'top Val.tag
let name = "valrepr"
let default _ = None
end
module ValRepr = Register(ValReprObj)
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 -> ValRepr.obj (ExtraArg s)
let val_tag = function Topwit t -> val_tag t
let register_val0 wit tag =
let tag = match tag with
| None ->
let name = match wit with
| ExtraArg s -> ArgT.repr s
| _ -> assert false
in
Val.Base (Val.create name)
| Some tag -> tag
in
ValRepr.register0 wit tag
(** Interpretation functions *)
type interp_sign = {
lfun : Val.t Id.Map.t;
extra : TacStore.t }
type ('glb, 'top) interp_fun = interp_sign -> 'glb -> 'top Ftactic.t
module InterpObj =
struct
type ('raw, 'glb, 'top) obj = ('glb, Val.t) interp_fun
let name = "interp"
let default _ = None
end
module Interp = Register(InterpObj)
let interp = Interp.obj
let register_interp0 = Interp.register0
|
