diff options
| author |  Arnaud Spiwack <arnaud@spiwack.net> | 2014-07-30 12:12:21 +0200 |
|---|---|---|
| committer | Arnaud Spiwack <arnaud@spiwack.net> | 2014-08-01 19:18:58 +0200 |
| commit | 78692ad28ded4f94d5cf7e54240fe0b71d1be282 (patch) | |
| tree | 05ccc456677d61f2d6b34dff334641059d179193 /tactics | |
| parent | 47c688165c6ad00b725bc4f93574bba55c2544f5 (diff) | |
Add [numgoal] to Ltac.
Diffstat (limited to 'tactics')
| -rw-r--r-- | tactics/tacintern.ml | 3 | ||||
| -rw-r--r-- | tactics/tacinterp.ml | 9 | ||||
| -rw-r--r-- | tactics/tacsubst.ml | 1 |
3 files changed, 12 insertions, 1 deletions
diff --git a/tactics/tacintern.ml b/tactics/tacintern.ml index a651d298f..324ea2f04 100644 --- a/tactics/tacintern.ml +++ b/tactics/tacintern.ml @@ -631,7 +631,7 @@ and intern_tactic_as_arg loc onlytac ist a = | TacCall _ | TacExternal _ | Reference _ | TacDynamic _ | TacGeneric _ as a -> TacArg (loc,a) | Tacexp a -> a - | ConstrMayEval _ | UConstr _ | TacFreshId _ | TacPretype _ as a -> + | ConstrMayEval _ | UConstr _ | TacFreshId _ | TacPretype _ | TacNumgoals as a -> if onlytac then error_tactic_expected loc else TacArg (loc,a) | MetaIdArg _ -> assert false @@ -663,6 +663,7 @@ and intern_tacarg strict onlytac ist = function TacExternal (loc,com,req,List.map (intern_tacarg !strict_check false ist) la) | TacFreshId x -> TacFreshId (List.map (intern_or_var ist) x) | TacPretype c -> TacPretype (intern_constr ist c) + | TacNumgoals -> TacNumgoals | Tacexp t -> Tacexp (intern_tactic onlytac ist t) | TacGeneric arg -> let (_, arg) = Genintern.generic_intern ist arg in diff --git a/tactics/tacinterp.ml b/tactics/tacinterp.ml index a6f7ff9af..1eecb9497 100644 --- a/tactics/tacinterp.ml +++ b/tactics/tacinterp.ml @@ -971,6 +971,9 @@ struct bind (Proofview.Goal.raw_goals >>= fun l -> Proofview.tclUNIT (Depends l)) (fun gl -> Proofview.V82.wrap_exceptions (fun () -> f gl)) + let lift (type a) (t:a Proofview.tactic) : a t = + Proofview.tclBIND t (fun x -> Proofview.tclUNIT (Uniform x)) + (** If the tactic returns unit, we can focus on the goals if necessary. *) let run m k = m >>= function | Uniform v -> k v @@ -1144,6 +1147,12 @@ and interp_tacarg ist arg : typed_generic_argument GTac.t = Proofview.V82.tclEVARS sigma <*> GTac.return (Value.of_constr c_interp) end + | TacNumgoals -> + GTac.lift begin + let open Proofview.Notations in + Proofview.numgoals >>= fun i -> + Proofview.tclUNIT (Value.of_int i) + end | Tacexp t -> val_interp ist t | TacDynamic(_,t) -> let tg = (Dyn.tag t) in diff --git a/tactics/tacsubst.ml b/tactics/tacsubst.ml index c0b81e90d..ecadfca59 100644 --- a/tactics/tacsubst.ml +++ b/tactics/tacsubst.ml @@ -262,6 +262,7 @@ and subst_tacarg subst = function TacExternal (_loc,com,req,List.map (subst_tacarg subst) la) | TacFreshId _ as x -> x | TacPretype c -> TacPretype (subst_glob_constr subst c) + | TacNumgoals -> TacNumgoals | Tacexp t -> Tacexp (subst_tactic subst t) | TacGeneric arg -> TacGeneric (Genintern.generic_substitute subst arg) | TacDynamic(the_loc,t) as x -> |