diff options
Diffstat (limited to 'theories/Init/Tactics.v')
| -rw-r--r-- | theories/Init/Tactics.v | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/theories/Init/Tactics.v b/theories/Init/Tactics.v index 1fa4a77f..4d64b823 100644 --- a/theories/Init/Tactics.v +++ b/theories/Init/Tactics.v @@ -1,13 +1,11 @@ (************************************************************************) (* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2011 *) +(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *) (* \VV/ **************************************************************) (* // * This file is distributed under the terms of the *) (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(*i $Id: Tactics.v 14641 2011-11-06 11:59:10Z herbelin $ i*) - Require Import Notations. Require Import Logic. Require Import Specif. @@ -79,6 +77,10 @@ Ltac false_hyp H G := Ltac case_eq x := generalize (refl_equal x); pattern x at -1; case x. +(* use either discriminate or injection on a hypothesis *) + +Ltac destr_eq H := discriminate H || (try (injection H; clear H; intro H)). + (* Similar variants of destruct *) Tactic Notation "destruct_with_eqn" constr(x) := @@ -187,6 +189,10 @@ Ltac easy := Tactic Notation "now" tactic(t) := t; easy. +(** Slightly more than [easy]*) + +Ltac easy' := repeat split; simpl; easy || now destruct 1. + (** A tactic to document or check what is proved at some point of a script *) Ltac now_show c := change c. |