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| author |  Arnaud Spiwack <arnaud@spiwack.net> | 2014-12-08 10:44:17 +0100 |
|---|---|---|
| committer | Arnaud Spiwack <arnaud@spiwack.net> | 2014-12-08 10:44:17 +0100 |
| commit | bdc5c300fc0c461a930b3766c9841d5c72f7947a (patch) | |
| tree | 0d7acbf51a8cb798ad571dcdfea4acdfa489c91f /tactics/tacticals.mli | |
| parent | 9a34d3edce15382f2a00ee7870b49fc29187ccbf (diff) | |
Constructor tactics backtracking is done using [Tacticals.New] rather than [Proofview].
The primitives in [Tacticals] respect Ltac's error level, whereas the one in [Proofview] do not necessarily. In that case the error caught was ignored causing arbitrary error level after [constructor] to be canceled.
Needed the addition of an [ORD] variant to [OR] in [Tacticals.New] to avoid unnecessary precomputation (the 'D' stands for 'delay').
Fixes #3838.
Diffstat (limited to 'tactics/tacticals.mli')
| -rw-r--r-- | tactics/tacticals.mli | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tactics/tacticals.mli b/tactics/tacticals.mli index d6630bb79..35a320589 100644 --- a/tactics/tacticals.mli +++ b/tactics/tacticals.mli @@ -169,6 +169,11 @@ module New : sig (** Fail with a [User_Error] containing the given message. *) val tclOR : unit tactic -> unit tactic -> unit tactic + val tclORD : unit tactic -> (unit -> unit tactic) -> unit tactic + (** Like {!tclOR} but accepts a delayed tactic as a second argument + in the form of a function which will be run only in case of + backtracking. *) + val tclONCE : unit tactic -> unit tactic val tclEXACTLY_ONCE : unit tactic -> unit tactic val tclORELSE0 : unit tactic -> unit tactic -> unit tactic |