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(************************************************************************)
(* * The Rocq Prover / The Rocq Development Team *)
(* v * Copyright INRIA, CNRS and contributors *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
open Names
(* spiwack: I'm choosing, for now, to have [goal_selector] be a
different type than [goal_reference] mostly because if it makes sense
to print a goal that is out of focus (or already solved) it doesn't
make sense to apply a tactic to it. Hence it the types may look very
similar, they do not seem to mean the same thing. *)
type t =
| SelectAlreadyFocused
| SelectList of Proofview.goal_range_selector list
| SelectAll
let select_nth n = SelectList [NthSelector n]
let pr_id_selector id =
Pp.(str "[" ++ Id.print id ++ str "]")
let pr_range_selector = let open Proofview in function
| NthSelector i -> Pp.int i
| RangeSelector (i, j) -> Pp.(int i ++ str "-" ++ int j)
| IdSelector id -> pr_id_selector id
let pr_goal_selector = let open Pp in function
| SelectAlreadyFocused -> str "!"
| SelectAll -> str "all"
| SelectList l -> prlist_with_sep pr_comma pr_range_selector l
let parse_goal_selector = function
| "!" -> SelectAlreadyFocused
| "all" -> SelectAll
| i ->
let err_msg = "The default selector must be \"all\", \"!\" or a natural number." in
begin try
let i = int_of_string i in
if i < 0 then CErrors.user_err Pp.(str err_msg);
select_nth i
with Failure _ -> CErrors.user_err Pp.(str err_msg)
end
(* Default goal selector: selector chosen when a tactic is applied
without an explicit selector. *)
let { Goptions.get = get_default_goal_selector } =
Goptions.declare_interpreted_string_option_and_ref
parse_goal_selector
(fun v -> Pp.string_of_ppcmds @@ pr_goal_selector v)
~key:["Default";"Goal";"Selector"]
~value:(select_nth 1)
()
(* Select a subset of the goals *)
let tclSELECT ?nosuchgoal g tac = match g with
| SelectList [NthSelector i] -> Proofview.tclFOCUS ?nosuchgoal i i tac
| SelectList [IdSelector id] -> Proofview.tclFOCUSID ?nosuchgoal id tac
| SelectList l -> Proofview.tclFOCUSSELECTORLIST ?nosuchgoal l tac
| SelectAll -> tac
| SelectAlreadyFocused ->
let open Proofview.Notations in
Proofview.numgoals >>= fun n ->
if n == 1 then tac
else
let e = CErrors.UserError
Pp.(str "Expected a single focused goal but " ++
int n ++ str " goals are focused.")
in
let info = Exninfo.reify () in
Proofview.tclZERO ~info e
|
