- if b then
- begin
- let replace =
- ProofEngineReduction.replace
- ~equality:(==) ~what:[what] ~with_what:[with_what]
- in
- let ty' = replace ty in
- let context' =
- List.map
- (function
- Some (name,Cic.Def (t,None))->
- Some (name,Cic.Def ((replace t),None))
- | Some (name,Cic.Decl t) -> Some (name,Cic.Decl (replace t))
- | None -> None
- | Some (_,Cic.Def (_,Some _)) -> assert false
- ) context
- in
- let metasenv' =
- List.map
- (function
- (n,_,_) when n = metano -> (metano,context',ty')
- | _ as t -> t
- ) metasenv
- in
- (curi,metasenv',pbo,pty), [metano]
- end
- else
- raise (ProofEngineTypes.Fail "Not convertible")
+ ProofEngineReduction.replace ~equality:(==) ~what:terms ~with_what:terms'
+ ~where:where in
+ let (selected_context,selected_ty) =
+ ProofEngineHelpers.select ~metasenv ~conjecture ~pattern in
+ let ty' = change context_len ty selected_ty in
+ let context' =
+ List.fold_right2
+ (fun entry selected_entry context' ->
+ let context'_len = List.length context' in
+ match entry,selected_entry with
+ None,None -> None::context'
+ | Some (name,Cic.Decl ty),Some (`Decl selected_ty) ->
+ let ty' = change context'_len ty selected_ty in
+ Some (name,Cic.Decl ty')::context'
+ | Some (name,Cic.Def (bo,ty)),Some (`Def (selected_bo,selected_ty)) ->
+ let bo' = change context'_len bo selected_bo in
+ let ty' =
+ match ty,selected_ty with
+ None,None -> None
+ | Some ty,Some selected_ty ->
+ Some (change context'_len ty selected_ty)
+ | _,_ -> assert false
+ in
+ Some (name,Cic.Def (bo',ty'))::context'
+ | _,_ -> assert false
+ ) context selected_context [] in
+ let metasenv' =
+ List.map (function
+ | (n,_,_) when n = metano -> (metano,context',ty')
+ | _ as t -> t
+ ) metasenv
+ in
+ (curi,metasenv',pbo,pty), [metano]