diff options
| author | herbelin | 2009-02-23 10:46:20 +0000 |
|---|---|---|
| committer | herbelin | 2009-02-23 10:46:20 +0000 |
| commit | 999b303a775257ee076adffe6daa7d528bcd35bc (patch) | |
| tree | fb033dc46102c01b98de526872b2f6f101943f4e | |
| parent | 3c5c74b9763debfcfc2b4683efd85184ae21875b (diff) | |
Add support for dependent "destruct" over terms in dependent types.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11944 85f007b7-540e-0410-9357-904b9bb8a0f7
| -rw-r--r-- | CHANGES | 2 | ||||
| -rw-r--r-- | tactics/tactics.ml | 6 | ||||
| -rw-r--r-- | test-suite/success/destruct.v | 14 |
3 files changed, 17 insertions, 5 deletions
@@ -10,6 +10,8 @@ Tactics - Tactic "intuition" now preserves inner "iff" (exceptional source of incompatibilities solvable by redefining "intuition" as "unfold iff in *; intuition". +- Improved support of dependent goals over objects in dependent types for + "destruct". Tools diff --git a/tactics/tactics.ml b/tactics/tactics.ml index b45861fd33..d74c9f05e0 100644 --- a/tactics/tactics.ml +++ b/tactics/tactics.ml @@ -2460,7 +2460,11 @@ let find_elim_signature isrec elim hyp0 gl = let s = elimination_sort_of_goal gl in let elimc = if isrec then lookup_eliminator mind s - else pf_apply make_case_gen gl mind s in + else + let case = + if occur_term (mkVar hyp0) (pf_concl gl) then make_case_dep + else make_case_gen in + pf_apply case gl mind s in let elimt = pf_type_of gl elimc in ((elimc, NoBindings), elimt), mkInd mind | Some (elimc,lbind as e) -> diff --git a/test-suite/success/destruct.v b/test-suite/success/destruct.v index 5aa78816b0..59d583feec 100644 --- a/test-suite/success/destruct.v +++ b/test-suite/success/destruct.v @@ -1,6 +1,6 @@ (* Submitted by Robert Schneck *) -Parameter A B C D : Prop. +Parameters A B C D : Prop. Axiom X : A -> B -> C /\ D. Lemma foo : A -> B -> C. @@ -45,9 +45,9 @@ Require Import List. Definition alist R := list (nat * R)%type. Section Properties. - Variables A : Type. - Variables a : A. - Variables E : alist A. + Variable A : Type. + Variable a : A. + Variable E : alist A. Lemma silly : E = E. Proof. @@ -55,3 +55,9 @@ Section Properties. Abort. End Properties. + +(* This used not to work before revision 11944 *) + +Goal forall P:(forall n, 0=n -> Prop), forall H: 0=0, P 0 H. +destruct H. +Abort. |