(* $Id: nCic.ml 9058 2008-10-13 17:42:30Z tassi $ *)
+let debug = ref false;;
+let pp x =
+ if !debug then prerr_endline (Lazy.force x) else ()
+;;
+
exception Error of string lazy_t * exn option
let fail ?exn msg = raise (Error (msg,exn))
module NRef = NReference
-let wrap f x =
+let wrap fname f x =
try f x
with
| MultiPassDisambiguator.DisambiguationError _
| NCicRefiner.RefineFailure _
| NCicUnification.UnificationFailure _
| NCicTypeChecker.TypeCheckerFailure _
- | NCicMetaSubst.MetaSubstFailure _ as exn -> fail ~exn (lazy "")
+ | NCicMetaSubst.MetaSubstFailure _ as exn -> fail ~exn (lazy fname)
;;
class pstatus =
type tactic_pattern = GrafiteAst.npattern Disambiguate.disambiguator_input
let pp_status status =
- prerr_endline (NCicPp.ppobj status#obj)
+ pp (lazy (NCicPp.ppobj status#obj))
;;
type cic_term = NCic.context * NCic.term
let ctx_of (c,_) = c ;;
-let relocate status destination (source,t as orig) =
- if source == destination then status, orig else
- let u, d, metasenv, subst, o = status#obj in
- let rec lcp ctx j i = function
- | (n1, NCic.Decl t1 as e)::cl1, (n2, NCic.Decl t2)::cl2 ->
- if n1 = n2 &&
- NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 then
- NCic.Rel i :: lcp (e::ctx)(j-1) (i-1) (cl1,cl2)
- else
- HExtlib.mk_list (NCic.Appl
- [NCic.Sort NCic.Prop; NCic.Sort NCic.Prop]) j
- | (n1, NCic.Def (b1,t1) as e)::cl1, (n2, NCic.Def (b2,t2))::cl2 ->
- if n1 = n2 &&
- NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 &&
- NCicReduction.are_convertible ctx ~subst ~metasenv b1 b2 then
- NCic.Rel i :: lcp (e::ctx)(j-1) (i-1) (cl1,cl2)
- else
- HExtlib.mk_list (NCic.Appl
- [NCic.Sort NCic.Prop; NCic.Sort NCic.Prop]) j
- | (n1, NCic.Def (b1,t1) as e)::cl1, (n2, NCic.Decl t2)::cl2 ->
- if n1 = n2 &&
- NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 then
- NCic.Rel i :: lcp (e::ctx)(j-1) (i-1) (cl1,cl2)
- else
- HExtlib.mk_list (NCic.Appl
- [NCic.Sort NCic.Prop; NCic.Sort NCic.Prop]) j
- | (n1, NCic.Decl _)::cl1, (n2, NCic.Def _)::cl2 -> assert false
- | _::_, [] ->
- HExtlib.mk_list (NCic.Appl
- [NCic.Sort NCic.Prop; NCic.Sort NCic.Prop]) j
- | _ -> []
- in
- let lc =
- lcp [] (List.length destination) (List.length source)
- (List.rev destination, List.rev source)
- in
- let lc = (0,NCic.Ctx (List.rev lc)) in
- let (metasenv, subst), t =
- NCicMetaSubst.delift
- ~unify:(fun m s c t1 t2 ->
- try Some (NCicUnification.unify status m s c t1 t2)
- with
- | NCicUnification.UnificationFailure _
- | NCicUnification.Uncertain _ -> None)
- metasenv subst source 0 lc t
- in
- let status = status#set_obj (u, d, metasenv, subst, o) in
- status, (destination, t)
+let ppterm status t =
+ let uri,height,metasenv,subst,obj = status#obj in
+ let context,t = t in
+ NCicPp.ppterm ~metasenv ~subst ~context t
;;
-let relocate a b c = wrap (relocate a b) c;;
-let term_of_cic_term s t c =
- let s, (_,t) = relocate s c t in
- s, t
+let ppcontext status c =
+ let uri,height,metasenv,subst,obj = status#obj in
+ NCicPp.ppcontext ~metasenv ~subst c
;;
-let ppterm status t =
+let ppterm_and_context status t =
let uri,height,metasenv,subst,obj = status#obj in
let context,t = t in
+ NCicPp.ppcontext ~metasenv ~subst context ^ "\n ⊢ "^
NCicPp.ppterm ~metasenv ~subst ~context t
;;
+let relocate status destination (source,t as orig) =
+ pp(lazy("relocate:\n" ^ ppterm_and_context status orig));
+ pp(lazy("relocate in:\n" ^ ppcontext status destination));
+ let rc =
+ if source == destination then status, orig else
+ let u, d, metasenv, subst, o = status#obj in
+ let cons x (a,b) = a, x::b in
+ let rec lcp ctx j i = function
+ | (n1, NCic.Decl t1 as e)::cl1, (n2, NCic.Decl t2)::cl2 ->
+ if n1 = n2 &&
+ NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 then
+ cons (NCic.Rel i) (lcp (e::ctx)(j-1) (i-1) (cl1,cl2))
+ else
+ j, []
+ | (n1, NCic.Def (b1,t1) as e)::cl1, (n2, NCic.Def (b2,t2))::cl2 ->
+ if n1 = n2 &&
+ NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 &&
+ NCicReduction.are_convertible ctx ~subst ~metasenv b1 b2 then
+ cons (NCic.Rel i) (lcp (e::ctx)(j-1) (i-1) (cl1,cl2))
+ else
+ j, []
+ | (n1, NCic.Def (b1,t1) as e)::cl1, (n2, NCic.Decl t2)::cl2 ->
+ if n1 = n2 &&
+ NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 then
+ cons (NCic.Rel i) (lcp (e::ctx)(j-1) (i-1) (cl1,cl2))
+ else
+ j, []
+ | (n1, NCic.Decl _)::cl1, (n2, NCic.Def _)::cl2 -> assert false
+ | _::_, [] -> j, []
+ | _ -> 0, []
+ in
+ let shift, lc =
+ lcp [] (List.length destination) (List.length source)
+ (List.rev destination, List.rev source)
+ in
+ let lc = (shift,NCic.Ctx (List.rev lc)) in
+ pp(lazy("delifting as " ^
+ NCicPp.ppterm ~metasenv ~subst ~context:source
+ (NCic.Meta (0,lc))));
+ let (metasenv, subst), t =
+ NCicMetaSubst.delift
+ ~unify:(fun m s c t1 t2 ->
+ try Some (NCicUnification.unify status m s c t1 t2)
+ with
+ | NCicUnification.UnificationFailure _
+ | NCicUnification.Uncertain _ -> None)
+ metasenv subst source 0 lc t
+ in
+ let status = status#set_obj (u, d, metasenv, subst, o) in
+ status, (destination, t)
+ in
+ pp(lazy("relocated: " ^ ppterm (fst rc) (snd rc)));
+ rc
+;;
+let relocate a b c = wrap "relocate" (relocate a b) c;;
+
+let term_of_cic_term s t c =
+ let s, (_,t) = relocate s c t in
+ s, t
+;;
+
let disambiguate status t ty context =
let status, expty =
match ty with
let new_pstatus = uri,height,metasenv,subst,obj in
status#set_obj new_pstatus, (context, t)
;;
-let disambiguate a b c d = wrap (disambiguate a b c) d;;
+let disambiguate a b c d = wrap "disambiguate" (disambiguate a b c) d;;
let typeof status ctx t =
let status, (_,t) = relocate status ctx t in
let ty = NCicTypeChecker.typeof ~subst ~metasenv ctx t in
status, (ctx, ty)
;;
-let typeof a b c = wrap (typeof a b) c;;
+let typeof a b c = wrap "typeof" (typeof a b) c;;
+
+let saturate status (ctx,t) =
+ let n,h,metasenv,subst,k = status#obj in
+ let t, metasenv, args = NCicMetaSubst.saturate metasenv subst ctx t 0 in
+ let status = status#set_obj (n,h,metasenv,subst,k) in
+ status, (ctx,t), List.map (fun x -> ctx,x) args
+;;
+let saturate a b = wrap "saturate" (saturate a) b;;
let whd status ?delta ctx t =
let status, (_,t) = relocate status ctx t in
let metasenv, subst = NCicUnification.unify status metasenv subst ctx a b in
status#set_obj (n,h,metasenv,subst,o)
;;
-let unify a b c d = wrap (unify a b c) d;;
+let unify a b c d = wrap "unify" (unify a b c) d;;
let fix_sorts (ctx,t) =
let f () =
let t = NCicUnification.fix_sorts t in
ctx,t
in
- wrap f ()
+ wrap "fix_sorts" f ()
;;
let refine status ctx term expty =
in
status#set_obj (name,height,metasenv,subst,obj), (ctx,t), (ctx,ty)
;;
-let refine a b c d = wrap (refine a b c) d;;
+let refine a b c d = wrap "refine" (refine a b c) d;;
let get_goalty status g =
let _,_,metasenv,_,_ = status#obj in
- let _, a, b = List.assoc g metasenv in
- a, b
+ try
+ let _, ctx, ty = NCicUtils.lookup_meta g metasenv in
+ ctx, ty
+ with NCicUtils.Meta_not_found _ as exn -> fail ~exn (lazy "get_goalty")
;;
let instantiate status i t =
=
let is_found status ctx t wanted =
(* we could lift wanted step-by-step *)
+ pp(lazy("is_found: "^ppterm status (ctx,t)));
try true, unify status ctx (ctx, t) wanted
with
| Error (_, Some (NCicUnification.UnificationFailure _))
(match wanted with
| Some wanted ->
let status', wanted = disambiguate status wanted None ctx in
+ pp(lazy("wanted: "^ppterm status' wanted));
let (status',found), t' = match_term status' ctx wanted t in
if found then status',t' else status,t
| None ->
~context:[] ~subst:[] pat ^ " against " ^
NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] t))
in
+ pp(lazy ("select in: "^ppterm low_status (context,term)));
let status, term = select low_status context path term in
let term = (context, term) in
+ pp(lazy ("postprocess: "^ppterm low_status term));
postprocess status term
;;
type 'status tactic = #tac_status as 'status -> 'status
+module NCicInverseRelIndexable : Discrimination_tree.Indexable
+with type input = cic_term and type constant_name = NUri.uri = struct
+
+open Discrimination_tree
+
+type input = cic_term
+type constant_name = NUri.uri
+
+let ppelem = function
+ | Constant (uri,arity) ->
+ "("^NUri.name_of_uri uri ^ "," ^ string_of_int arity^")"
+ | Bound (i,arity) ->
+ "("^string_of_int i ^ "," ^ string_of_int arity^")"
+ | Variable -> "?"
+ | Proposition -> "Prop"
+ | Datatype -> "Type"
+ | Dead -> "Dead"
+;;
+
+let path_string_of (ctx,t) =
+ let len_ctx = List.length ctx in
+ let rec aux arity = function
+ | NCic.Appl ((NCic.Meta _|NCic.Implicit _)::_) -> [Variable]
+ | NCic.Appl (NCic.Lambda _ :: _) -> [Variable] (* maybe we should b-reduce *)
+ | NCic.Appl [] -> assert false
+ | NCic.Appl (hd::tl) ->
+ aux (List.length tl) hd @ List.flatten (List.map (aux 0) tl)
+ | NCic.Lambda _ | NCic.Prod _ -> [Variable]
+ (* I think we should CicSubstitution.subst Implicit t *)
+ | NCic.LetIn _ -> [Variable] (* z-reduce? *)
+ | NCic.Meta _ | NCic.Implicit _ -> assert (arity = 0); [Variable]
+ | NCic.Rel i -> [Bound (len_ctx - i, arity)]
+ | NCic.Sort (NCic.Prop) -> assert (arity=0); [Proposition]
+ | NCic.Sort _ -> assert (arity=0); [Datatype]
+ | NCic.Const (NReference.Ref (u,_)) -> [Constant (u, arity)]
+ | NCic.Match _ -> [Dead]
+ in
+ aux 0 t
+;;
+
+let compare e1 e2 =
+ match e1,e2 with
+ | Constant (u1,a1),Constant (u2,a2) ->
+ let x = NUri.compare u1 u2 in
+ if x = 0 then Pervasives.compare a1 a2 else x
+ | e1,e2 -> Pervasives.compare e1 e2
+;;
+
+let string_of_path l = String.concat "." (List.map ppelem l) ;;
+
+end
+
+module Ncic_termOT : Set.OrderedType with type t = cic_term =
+ struct
+ type t = cic_term
+ let compare = Pervasives.compare
+ end
+
+module Ncic_termSet : Set.S with type elt = cic_term = Set.Make(Ncic_termOT)
+
+module InvRelDiscriminationTree =
+ Discrimination_tree.Make(NCicInverseRelIndexable)(Ncic_termSet)
+
projects / helm.git / blobdiff