* http://cs.unibo.it/helm/.
*)
+open ProofEngineTypes
+
(*
-let reduction_tac ~reduction ~status:(proof,goal) =
+let reduction_tac ~reduction (proof,goal) =
let curi,metasenv,pbo,pty = proof in
- let metano,context,ty = List.find (function (m,_,_) -> m=goal) metasenv in
+ let metano,context,ty = CicUtil.lookup_meta goal metasenv in
let new_ty = reduction context ty in
let new_metasenv =
List.map
*)
(* The default of term is the thesis of the goal to be prooved *)
-let reduction_tac ~also_in_hypotheses ~reduction ~terms ~status:(proof,goal) =
- let curi,metasenv,pbo,pty = proof in
- let metano,context,ty = List.find (function (m,_,_) -> m=goal) metasenv in
- let terms =
- match terms with None -> [ty] | Some l -> l
- in
+let reduction_tac ~reduction ~pattern:(hyp_patterns,goal_pattern) (proof,goal) =
+ let curi,metasenv,pbo,pty = proof in
+ let metano,context,ty = CicUtil.lookup_meta goal metasenv in
(* We don't know if [term] is a subterm of [ty] or a subterm of *)
(* the type of one metavariable. So we replace it everywhere. *)
(*CSC: Il vero problema e' che non sapendo dove sia il term non *)
(*CSC: sappiamo neppure quale sia il suo contesto!!!! Insomma, *)
(*CSC: e' meglio prima cercare il termine e scoprirne il *)
(*CSC: contesto, poi ridurre e infine rimpiazzare. *)
- let replace context where=
-(*CSC: Per il momento se la riduzione fallisce significa solamente che *)
-(*CSC: siamo nel contesto errato. Metto il try, ma che schifo!!!! *)
-(*CSC: Anche perche' cosi' catturo anche quelle del replace che non dovrei *)
- try
- let terms' = List.map (reduction context) terms in
- ProofEngineReduction.replace ~equality:(==) ~what:terms ~with_what:terms'
- ~where:where
- with
- _ -> where
- in
- let ty' = replace context ty in
- let context' =
- if also_in_hypotheses then
- List.fold_right
- (fun entry context ->
- match entry with
- Some (name,Cic.Def (t,None)) ->
- (Some (name,Cic.Def ((replace context t),None)))::context
- | Some (name,Cic.Decl t) ->
- (Some (name,Cic.Decl (replace context t)))::context
- | None -> None::context
- | Some (_,Cic.Def (_,Some _)) -> assert false
- ) context []
- else
- context
- in
- let metasenv' =
- List.map
- (function
- (n,_,_) when n = metano -> (metano,context',ty')
- | _ as t -> t
- ) metasenv
+ let replace context where terms =
+ (*CSC: Per il momento se la riduzione fallisce significa solamente che *)
+ (*CSC: siamo nel contesto errato. Metto il try, ma che schifo!!!! *)
+ (*CSC: Anche perche' cosi' catturo anche quelle del replace che non dovrei *)
+ try
+ let terms, terms' =
+ List.split
+ (List.map
+ (fun i, t -> t, reduction (i @ context) t)
+ terms)
in
- (curi,metasenv',pbo,pty), [metano]
+ ProofEngineReduction.replace ~equality:(==) ~what:terms ~with_what:terms'
+ ~where:where
+ (* FIXME this is a catch ALL... bad thing *)
+ with exc -> (*prerr_endline (Printexc.to_string exc);*) where
+ in
+ let find_pattern_for name =
+ try Some (snd(List.find (fun (n, pat) -> Cic.Name n = name) hyp_patterns))
+ with Not_found -> None
+ in
+ let ty' =
+ match goal_pattern with
+ | None -> replace context ty [[],ty]
+ | Some pat ->
+ let terms = ProofEngineHelpers.select ~term:ty ~pattern:pat in
+ replace context ty terms
+ in
+ let context' =
+ if hyp_patterns <> [] then
+ List.fold_right
+ (fun entry context ->
+ match entry with
+ | Some (name,Cic.Decl term) ->
+ (match find_pattern_for name with
+ | None -> entry::context
+ | Some pat ->
+ let terms = ProofEngineHelpers.select ~term ~pattern:pat in
+ let where = replace context term terms in
+ let entry = Some (name,Cic.Decl where) in
+ entry::context)
+ | Some (name,Cic.Def (term, None)) ->
+ (match find_pattern_for name with
+ | None -> entry::context
+ | Some pat ->
+ let terms = ProofEngineHelpers.select ~term ~pattern:pat in
+ let where = replace context term terms in
+ let entry = Some (name,Cic.Def (where,None)) in
+ entry::context)
+ | _ -> entry::context
+ ) context []
+ else
+ context
+ in
+ let metasenv' =
+ List.map (function
+ | (n,_,_) when n = metano -> (metano,context',ty')
+ | _ as t -> t
+ ) metasenv
+ in
+ (curi,metasenv',pbo,pty), [metano]
;;
-let simpl_tac = reduction_tac ~reduction:ProofEngineReduction.simpl ;;
-let reduce_tac = reduction_tac ~reduction:ProofEngineReduction.reduce ;;
-let whd_tac = reduction_tac ~reduction:CicReduction.whd ;;
+let simpl_tac ~pattern =
+ mk_tactic (reduction_tac ~reduction:ProofEngineReduction.simpl ~pattern);;
-let fold_tac ~reduction ~also_in_hypotheses ~term ~status:(proof,goal) =
- let curi,metasenv,pbo,pty = proof in
- let metano,context,ty = List.find (function (m,_,_) -> m=goal) metasenv in
- let term' = reduction context term in
- (* We don't know if [term] is a subterm of [ty] or a subterm of *)
- (* the type of one metavariable. So we replace it everywhere. *)
- (*CSC: ma si potrebbe ovviare al problema. Ma non credo *)
- (*CSC: che si guadagni nulla in fatto di efficienza. *)
- let replace =
- ProofEngineReduction.replace ~equality:(=) ~what:[term'] ~with_what:[term]
- in
- let ty' = replace ty in
- let metasenv' =
- let context' =
- if also_in_hypotheses then
+let reduce_tac ~pattern =
+ mk_tactic (reduction_tac ~reduction:ProofEngineReduction.reduce ~pattern);;
+
+let whd_tac ~pattern =
+ mk_tactic (reduction_tac ~reduction:CicReduction.whd ~pattern);;
+
+let normalize_tac ~pattern =
+ mk_tactic (reduction_tac ~reduction:CicReduction.normalize ~pattern );;
+
+let fold_tac ~reduction ~pattern ~term =
+(*
+ let fold_tac ~reduction ~pattern:(hyp_patterns,goal_pattern) ~term (proof,goal)
+ =
+ let curi,metasenv,pbo,pty = proof in
+ let metano,context,ty = CicUtil.lookup_meta goal metasenv in
+ let term' = reduction context term in
+ let replace =
+ ProofEngineReduction.replace ~equality:(=) ~what:[term'] ~with_what:[term]
+ in
+ let ty' = replace ty in
+ let metasenv' =
+ let context' =
+ if also_in_hypotheses then
+ List.map
+ (function
+ Some (n,Cic.Decl t) -> Some (n,Cic.Decl (replace t))
+ | Some (n,Cic.Def (t,None)) -> Some (n,Cic.Def ((replace t),None))
+ | None -> None
+ | Some (_,Cic.Def (_,Some _)) -> assert false
+ ) context
+ else
+ context
+ in
List.map
(function
- Some (n,Cic.Decl t) -> Some (n,Cic.Decl (replace t))
- | Some (n,Cic.Def (t,None)) -> Some (n,Cic.Def ((replace t),None))
- | None -> None
- | Some (_,Cic.Def (_,Some _)) -> assert false
- ) context
- else
- context
+ (n,_,_) when n = metano -> (metano,context',ty')
+ | _ as t -> t
+ ) metasenv
+
in
- List.map
- (function
- (n,_,_) when n = metano -> (metano,context',ty')
- | _ as t -> t
- ) metasenv
-
- in
- (curi,metasenv',pbo,pty), [metano]
+ (curi,metasenv',pbo,pty), [metano]
+ in
+ mk_tactic (fold_tac ~reduction ~pattern ~term)
+*) assert false
;;
projects / helm.git / blobdiff