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| author |  Gaëtan Gilbert <gaetan.gilbert@skyskimmer.net> | 2018-03-08 12:45:37 +0100 |
|---|---|---|
| committer | Gaëtan Gilbert <gaetan.gilbert@skyskimmer.net> | 2018-04-29 20:45:05 +0200 |
| commit | d94fef210a63db4ff34251afe093041912a7cbde (patch) | |
| tree | b807e02ad0186efce46f6deae2631fd4616c7523 /proofs/pfedit.ml | |
| parent | 6879320384e63793ff9447d4aaddc919bac540ec (diff) | |
Strict focusing using Default Goal Selector.
We add a [SelectAlreadyFocused] constructor to [goal_selector] (read
"!") which causes a failure when there's not exactly 1 goal and
otherwise is a noop.
Then [Set Default Goal Selector "!".] puts us in "strict focusing"
mode where we can only run tactics if we have only one goal or use a
selector.
Closes #6689.
Diffstat (limited to 'proofs/pfedit.ml')
| -rw-r--r-- | proofs/pfedit.ml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/proofs/pfedit.ml b/proofs/pfedit.ml index abda04ff1..62a38fa32 100644 --- a/proofs/pfedit.ml +++ b/proofs/pfedit.ml @@ -101,6 +101,18 @@ let solve ?with_end_tac gi info_lvl tac pr = | Some _ -> Proofview.Trace.record_info_trace tac in let tac = match gi with + | Vernacexpr.SelectAlreadyFocused -> + let open Proofview.Notations in + Proofview.numgoals >>= fun n -> + if n == 1 then tac + else + let e = CErrors.UserError + (None, + Pp.(str "Expected a single focused goal but " ++ + int n ++ str " goals are focused.")) + in + Proofview.tclZERO e + | Vernacexpr.SelectNth i -> Proofview.tclFOCUS i i tac | Vernacexpr.SelectList l -> Proofview.tclFOCUSLIST l tac | Vernacexpr.SelectId id -> Proofview.tclFOCUSID id tac |