1 (* Copyright (C) 2002, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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15 * GNU General Public License for more details.
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23 * http://cs.unibo.it/helm/.
27 let constructor_tac ~n ~status:(proof, goal) =
29 let module R = CicReduction in
30 let (_,metasenv,_,_) = proof in
31 let metano,context,ty = CicUtil.lookup_meta goal metasenv in
32 match (R.whd context ty) with
33 (C.MutInd (uri, typeno, exp_named_subst))
34 | (C.Appl ((C.MutInd (uri, typeno, exp_named_subst))::_)) ->
35 PrimitiveTactics.apply_tac
36 ~term: (C.MutConstruct (uri, typeno, n, exp_named_subst))
38 | _ -> raise (ProofEngineTypes.Fail "Constructor: failed")
42 let exists_tac ~status =
43 constructor_tac ~n:1 ~status
47 let split_tac ~status =
48 constructor_tac ~n:1 ~status
52 let left_tac ~status =
53 constructor_tac ~n:1 ~status
57 let right_tac ~status =
58 constructor_tac ~n:2 ~status