X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FprimitiveTactics.ml;h=30d08c9bd76f7cdb52758a816c2dd653f422ef68;hb=a6fc115fd7d4cfba94a43f001f4c27322d3db1a8;hp=1de72fb5d2d7368da9eba47a0301017e7fe7a742;hpb=d3578004b25e8883581d78b3173c55ab60987299;p=helm.git diff --git a/helm/ocaml/tactics/primitiveTactics.ml b/helm/ocaml/tactics/primitiveTactics.ml index 1de72fb5d..30d08c9bd 100644 --- a/helm/ocaml/tactics/primitiveTactics.ml +++ b/helm/ocaml/tactics/primitiveTactics.ml @@ -160,6 +160,21 @@ let new_metasenv_for_apply newmeta proof context ty = let rec aux newmeta = function C.Cast (he,_) -> aux newmeta he + (* If the expected type is a Type, then also Set is OK ==> + * we accept any term of type Type *) + (*CSC: BUG HERE: in this way it is possible for the term of + * type Type to be different from a Sort!!! *) + | C.Prod (name,(C.Sort C.Type as s),t) -> + let irl = + CicMkImplicit.identity_relocation_list_for_metavariable context + in + let newargument = C.Meta (newmeta+1,irl) in + let (res,newmetasenv,arguments,lastmeta) = + aux (newmeta + 2) (S.subst newargument t) + in + res, + (newmeta,[],s)::(newmeta+1,context,C.Meta (newmeta,[]))::newmetasenv, + newargument::arguments,lastmeta | C.Prod (name,s,t) -> let irl = CicMkImplicit.identity_relocation_list_for_metavariable context @@ -202,15 +217,27 @@ let CicSubstitution.subst_vars !exp_named_subst_diff ty | _ -> raise (WrongUriToVariable (UriManager.string_of_uri uri)) in - let irl = - CicMkImplicit.identity_relocation_list_for_metavariable context - in - let subst_item = uri,C.Meta (!next_fresh_meta,irl) in - newmetasenvfragment := - (!next_fresh_meta,context,ty)::!newmetasenvfragment ; - exp_named_subst_diff := !exp_named_subst_diff @ [subst_item] ; - incr next_fresh_meta ; - subst_item::(aux (tl,[])) + (match ty with + C.Sort C.Type as s -> + let fresh_meta = !next_fresh_meta in + let fresh_meta' = fresh_meta + 1 in + next_fresh_meta := !next_fresh_meta + 2 ; + let subst_item = uri,C.Meta (fresh_meta',[]) in + newmetasenvfragment := + (fresh_meta,[],C.Sort C.Type) :: + (fresh_meta',[],C.Meta (fresh_meta,[])) :: !newmetasenvfragment ; + exp_named_subst_diff := !exp_named_subst_diff @ [subst_item] ; + subst_item::(aux (tl,[])) + | _ -> + let irl = + CicMkImplicit.identity_relocation_list_for_metavariable context + in + let subst_item = uri,C.Meta (!next_fresh_meta,irl) in + newmetasenvfragment := + (!next_fresh_meta,context,ty)::!newmetasenvfragment ; + exp_named_subst_diff := !exp_named_subst_diff @ [subst_item] ; + incr next_fresh_meta ; + subst_item::(aux (tl,[]))) | uri::tl1,((uri',_) as s)::tl2 -> assert (UriManager.eq uri uri') ; s::(aux (tl1,tl2)) @@ -220,11 +247,10 @@ let !exp_named_subst_diff,!next_fresh_meta, List.rev !newmetasenvfragment, exp_named_subst' in -prerr_endline ("@@@ " ^ CicPp.ppterm (Cic.Var (uri,exp_named_subst)) ^ " |--> " ^ CicPp.ppterm (Cic.Var (uri,exp_named_subst'))) ; new_fresh_meta,newmetasenvfragment,exp_named_subst',exp_named_subst_diff ;; -let apply_tac ~term ~status:(proof, goal) = +let apply_tac ~term (proof, goal) = (* Assumption: The term "term" must be closed in the current context *) let module T = CicTypeChecker in let module R = CicReduction in @@ -275,7 +301,7 @@ let apply_tac ~term ~status:(proof, goal) = in let newmetasenv = metasenv'@newmetas in let subst,newmetasenv' = - CicUnification.fo_unif newmetasenv context consthead ty + CicUnification.fo_unif newmetasenv context consthead ty in let in_subst_domain i = List.exists (function (j,_) -> i=j) subst in let apply_subst = CicMetaSubst.apply_subst subst in @@ -292,7 +318,6 @@ let apply_tac ~term ~status:(proof, goal) = Cic.Appl (term'::arguments) ) in -prerr_endline ("XXXX " ^ CicPp.ppterm (if List.length newmetas = 0 then term' else Cic.Appl (term'::arguments)) ^ " |>>> " ^ CicPp.ppterm bo') ; let newmetasenv'' = new_uninstantiatedmetas@old_uninstantiatedmetas in let (newproof, newmetasenv''') = let subst_in = CicMetaSubst.apply_subst ((metano,bo')::subst) in @@ -303,16 +328,16 @@ prerr_endline ("XXXX " ^ CicPp.ppterm (if List.length newmetas = 0 then term' el (* TODO per implementare i tatticali e' necessario che tutte le tattiche sollevino _solamente_ Fail *) -let apply_tac ~term ~status = +let apply_tac ~term status = try - apply_tac ~term ~status + apply_tac ~term status (* TODO cacciare anche altre eccezioni? *) with CicUnification.UnificationFailure _ as e -> raise (Fail (Printexc.to_string e)) let intros_tac ?(mk_fresh_name_callback = FreshNamesGenerator.mk_fresh_name) () - ~status:(proof, goal) + (proof, goal) = let module C = Cic in let module R = CicReduction in @@ -329,7 +354,7 @@ let intros_tac let cut_tac ?(mk_fresh_name_callback = FreshNamesGenerator.mk_fresh_name) - term ~status:(proof, goal) + term (proof, goal) = let module C = Cic in let curi,metasenv,pbo,pty = proof in @@ -361,7 +386,7 @@ let cut_tac let letin_tac ?(mk_fresh_name_callback = FreshNamesGenerator.mk_fresh_name) - term ~status:(proof, goal) + term (proof, goal) = let module C = Cic in let curi,metasenv,pbo,pty = proof in @@ -385,7 +410,7 @@ let letin_tac (newproof, [newmeta]) (** functional part of the "exact" tactic *) -let exact_tac ~term ~status:(proof, goal) = +let exact_tac ~term (proof, goal) = (* Assumption: the term bo must be closed in the current context *) let (_,metasenv,_,_) = proof in let metano,context,ty = CicUtil.lookup_meta goal metasenv in @@ -403,7 +428,7 @@ let exact_tac ~term ~status:(proof, goal) = (* not really "primitive" tactics .... *) -let elim_tac ~term ~status:(proof, goal) = +let elim_tac ~term (proof, goal) = let module T = CicTypeChecker in let module U = UriManager in let module R = CicReduction in @@ -546,7 +571,7 @@ exception NotConvertible (*CSC: while [what] can have a richer context (because of binders) *) (*CSC: So it is _NOT_ possible to use those binders in the [with_what] term. *) (*CSC: Is that evident? Is that right? Or should it be changed? *) -let change_tac ~what ~with_what ~status:(proof, goal) = +let change_tac ~what ~with_what (proof, goal) = let curi,metasenv,pbo,pty = proof in let metano,context,ty = CicUtil.lookup_meta goal metasenv in (* are_convertible works only on well-typed terms *)