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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Util
open Genarg
open Pp
open Names
open Tacexpr
(** Tactic notations (TacAlias) *)
type alias = KerName.t
let alias_map = Summary.ref ~name:"tactic-alias"
(KNmap.empty : glob_tactic_expr KNmap.t)
let register_alias key tac =
alias_map := KNmap.add key tac !alias_map
let interp_alias key =
try KNmap.find key !alias_map
with Not_found -> Errors.anomaly (str "Unknown tactic alias: " ++ KerName.print key)
let check_alias key = KNmap.mem key !alias_map
(** ML tactic extensions (TacML) *)
type ml_tactic =
typed_generic_argument list -> Geninterp.interp_sign -> unit Proofview.tactic
module MLName =
struct
type t = ml_tactic_name
let compare tac1 tac2 =
let c = String.compare tac1.mltac_tactic tac2.mltac_tactic in
if c = 0 then String.compare tac1.mltac_plugin tac2.mltac_plugin
else c
end
module MLTacMap = Map.Make(MLName)
let pr_tacname t =
str t.mltac_plugin ++ str "::" ++ str t.mltac_tactic
let tac_tab = ref MLTacMap.empty
let register_ml_tactic ?(overwrite = false) s (t : ml_tactic) =
let () =
if MLTacMap.mem s !tac_tab then
if overwrite then
let () = tac_tab := MLTacMap.remove s !tac_tab in
msg_warning (str "Overwriting definition of tactic " ++ pr_tacname s)
else
Errors.anomaly (str "Cannot redeclare tactic " ++ pr_tacname s ++ str ".")
in
tac_tab := MLTacMap.add s t !tac_tab
let interp_ml_tactic s =
try
MLTacMap.find s !tac_tab
with Not_found ->
Errors.errorlabstrm ""
(str "The tactic " ++ pr_tacname s ++ str " is not installed.")
(***************************************************************************)
(* Tactic registration *)
(* Summary and Object declaration *)
open Nametab
open Libobject
type ltac_entry = {
tac_for_ml : bool;
tac_body : glob_tactic_expr;
tac_redef : ModPath.t list;
}
let mactab =
Summary.ref (KNmap.empty : ltac_entry KNmap.t)
~name:"tactic-definition"
let ltac_entries () = !mactab
let interp_ltac r = (KNmap.find r !mactab).tac_body
let is_ltac_for_ml_tactic r = (KNmap.find r !mactab).tac_for_ml
let add kn b t =
let entry = { tac_for_ml = b; tac_body = t; tac_redef = [] } in
mactab := KNmap.add kn entry !mactab
let replace kn path t =
let (path, _, _) = KerName.repr path in
let entry _ e = { e with tac_body = t; tac_redef = path :: e.tac_redef } in
mactab := KNmap.modify kn entry !mactab
let load_md i ((sp, kn), (local, id, b, t)) = match id with
| None ->
let () = if not local then Nametab.push_tactic (Until i) sp kn in
add kn b t
| Some kn0 -> replace kn0 kn t
let open_md i ((sp, kn), (local, id, b, t)) = match id with
| None ->
let () = if not local then Nametab.push_tactic (Exactly i) sp kn in
add kn b t
| Some kn0 -> replace kn0 kn t
let cache_md ((sp, kn), (local, id ,b, t)) = match id with
| None ->
let () = Nametab.push_tactic (Until 1) sp kn in
add kn b t
| Some kn0 -> replace kn0 kn t
let subst_kind subst id = match id with
| None -> None
| Some kn -> Some (Mod_subst.subst_kn subst kn)
let subst_md (subst, (local, id, b, t)) =
(local, subst_kind subst id, b, Tacsubst.subst_tactic subst t)
let classify_md (local, _, _, _ as o) = Substitute o
let inMD : bool * Nametab.ltac_constant option * bool * glob_tactic_expr -> obj =
declare_object {(default_object "TAC-DEFINITION") with
cache_function = cache_md;
load_function = load_md;
open_function = open_md;
subst_function = subst_md;
classify_function = classify_md}
let register_ltac for_ml local id tac =
ignore (Lib.add_leaf id (inMD (local, None, for_ml, tac)))
let redefine_ltac local kn tac =
Lib.add_anonymous_leaf (inMD (local, Some kn, false, tac))
|
