-let ppterm =
- ref (fun ~context ~subst ~metasenv t -> "Please, set a pp callback")
-;;
-
-let set_ppterm f = ppterm := f;;
+(*
+ ||M|| This file is part of HELM, an Hypertextual, Electronic
+ ||A|| Library of Mathematics, developed at the Computer Science
+ ||T|| Department, University of Bologna, Italy.
+ ||I||
+ ||T|| HELM is free software; you can redistribute it and/or
+ ||A|| modify it under the terms of the GNU General Public License
+ \ / version 2 or (at your option) any later version.
+ \ / This software is distributed as is, NO WARRANTY.
+ V_______________________________________________________________ *)
-let ppterm ?(context=[]) ?(subst=[]) ?(metasenv=[]) t =
- !ppterm ~context ~subst ~metasenv t
-;;
+(* $Id$ *)
module C = NCic
module R = NReference
-let trivial_pp_term ~context ~subst ~metasenv =
- let rec aux ctx = function
+let r2s pp_fix_name r =
+ try
+ match r with
+ | R.Ref (u,R.Ind (_,i,_)) ->
+ (match NCicLibrary.get_obj u with
+ | _,_,_,_, C.Inductive (_,_,itl,_) ->
+ let _,name,_,_ = List.nth itl i in name
+ | _ -> assert false)
+ | R.Ref (u,R.Con (i,j,_)) ->
+ (match NCicLibrary.get_obj u with
+ | _,_,_,_, C.Inductive (_,_,itl,_) ->
+ let _,_,_,cl = List.nth itl i in
+ let _,name,_ = List.nth cl (j-1) in name
+ | _ -> assert false)
+ | R.Ref (u,(R.Decl | R.Def _)) ->
+ (match NCicLibrary.get_obj u with
+ | _,_,_,_, C.Constant (_,name,_,_,_) -> name
+ | _ -> assert false)
+ | R.Ref (u,(R.Fix (i,_,_)|R.CoFix i)) ->
+ (match NCicLibrary.get_obj u with
+ | _,_,_,_, C.Fixpoint (_,fl,_) ->
+ if pp_fix_name then
+ let _,name,_,_,_ = List.nth fl i in name
+ else
+ NUri.name_of_uri u ^"("^ string_of_int i ^ ")"
+ | _ -> assert false)
+ with NCicLibrary.ObjectNotFound _ -> R.string_of_reference r
+;;
+
+let string_of_implicit_annotation = function
+ | `Closed -> "▪"
+ | `Type -> ""
+ | `Hole -> "□"
+ | `Term -> "Term"
+ | `Typeof x -> "Ty("^string_of_int x^")"
+;;
+
+let ppterm ~context ~subst ~metasenv:_ ?(inside_fix=false) t =
+ let buff = Buffer.create 100 in
+ let f = Format.formatter_of_buffer buff in
+ let module F = Format in
+ let rec aux ?(toplevel=false) ctx = function
| C.Rel m ->
- (try List.nth ctx m
- with Not_found -> " -" ^ string_of_int (m - List.length context))
- | C.Const r -> R.string_of_reference r
- | C.Prod (name,s,t) -> " \Pi "^name^":"^aux ctx s^"."^aux (name::ctx) t
- | C.Lambda (name,s,t) -> " \lambda "^name^":"^aux ctx s^"."^aux (name::ctx) t
+ (try
+ let name = List.nth ctx (m-1) in
+ F.fprintf f "%s" (if name = "_" then "__"^string_of_int m else name)
+ with Failure "nth" | Invalid_argument "List.nth" ->
+ F.fprintf f " -%d" (m - List.length ctx))
+ | C.Const r -> F.fprintf f "%s" (r2s inside_fix r)
+ | C.Prod ("_",s,t) ->
+ if not toplevel then F.fprintf f "(";
+ F.fprintf f "@[<hov 1>";
+ (match s with
+ | C.Prod ("_",_,_) -> aux ~toplevel:false ctx s
+ | _ -> aux ~toplevel:true ctx s);
+ F.fprintf f "@;→ ";
+ aux ~toplevel:true ("_"::ctx) t;
+ F.fprintf f "@]";
+ if not toplevel then F.fprintf f ")";
+ | C.Prod (name,s,t) ->
+ if not toplevel then F.fprintf f "(";
+ F.fprintf f "@[<hov 1>";
+ F.fprintf f "@[<hov 2>∀%s:@;" name;
+ aux ~toplevel:true ctx s;
+ F.fprintf f "@].@;";
+ aux ~toplevel:true (name::ctx) t;
+ F.fprintf f "@]";
+ if not toplevel then F.fprintf f ")";
+ | C.Lambda (name,s,t) ->
+ if not toplevel then F.fprintf f "(";
+ F.fprintf f "@[<hov 1>";
+ F.fprintf f "λ%s:" name;
+ aux ~toplevel:true ctx s;
+ F.fprintf f ".@;";
+ aux ~toplevel:true (name::ctx) t;
+ F.fprintf f "@]";
+ if not toplevel then F.fprintf f ")";
| C.LetIn (name,ty,t,b) ->
- " let "^name^":"^aux ctx ty^":="^aux ctx t^" in "^aux (name::ctx) b
- | C.Match (_,oty,t,pl) ->
- " match " ^ aux ctx t ^ " return " ^ aux ctx oty ^ "[" ^
- String.concat "|" (List.map (aux ctx) pl) ^ "]"
- | C.Appl l -> "("^String.concat " " (List.map (aux ctx) l) ^")"
- | C.Implicit _ -> "?"
- | C.Meta (n,_) -> "?"^string_of_int n
- | C.Sort C.Prop -> "Prop"
- | C.Sort C.CProp -> "CProp"
- | C.Sort (C.Type n) -> "Type"^string_of_int n
+ if not toplevel then F.fprintf f "(";
+ F.fprintf f "@[<hov 1>";
+ F.fprintf f "let %s:@;" name;
+ aux ~toplevel:true ctx ty;
+ F.fprintf f "@;≝ ";
+ aux ~toplevel:true ctx t;
+ F.fprintf f "@;in@;";
+ (aux ~toplevel:true (name::ctx) b);
+ F.fprintf f "@]";
+ if not toplevel then F.fprintf f ")";
+ | C.Match (r,oty,t,pl) ->
+ F.fprintf f "@[<hov>match ";
+ aux ~toplevel:true ctx t;
+ F.fprintf f "@;return ";
+ aux ~toplevel:true ctx oty;
+ F.fprintf f "@; @[<v>[ ";
+ if pl <> [] then
+ begin
+ F.fprintf f "@[<hov 2>%s ⇒@;"
+ (try r2s inside_fix (R.mk_constructor 1 r)
+ with R.IllFormedReference _ -> "#ERROR#");
+ aux ~toplevel:true ctx (List.hd pl);
+ F.fprintf f "@]";
+ ignore(List.fold_left
+ (fun i t ->
+ F.fprintf f "@;| @[<hov 2>%s ⇒@;"
+ (try r2s inside_fix (R.mk_constructor i r)
+ with R.IllFormedReference _ -> "#ERROR#");
+ aux ~toplevel:true ctx t;
+ F.fprintf f "@]";
+ i+1)
+ 2 (List.tl pl));
+ end;
+ F.fprintf f "]@] @]";
+ | C.Appl [] | C.Appl [_] | C.Appl (C.Appl _::_) ->
+ F.fprintf f "BAD APPLICATION"
+ | C.Appl l ->
+ F.fprintf f "@[<hov 2>";
+ if not toplevel then F.fprintf f "(";
+ aux ctx (List.hd l);
+ List.iter (fun x -> F.fprintf f "@;";aux ctx x) (List.tl l);
+ if not toplevel then F.fprintf f ")";
+ F.fprintf f "@]"
+ | C.Implicit annot ->
+ F.fprintf f "?%s" (string_of_implicit_annotation annot)
+ | C.Meta (n,lc) when List.mem_assoc n subst ->
+ let _,_,t,_ = List.assoc n subst in
+ aux ctx (NCicSubstitution.subst_meta lc t)
+ | C.Meta (n,(shift,C.Irl len)) ->
+ F.fprintf f "?%d(%d,%d)" n shift len
+ | C.Meta (n,(shift,C.Ctx l)) ->
+ F.fprintf f "?%d(%d,[" n shift;
+ if List.length l > 0 then
+ begin
+ aux ctx (NCicSubstitution.lift shift (List.hd l));
+ List.iter (fun x -> F.fprintf f ",";aux ctx x)
+ (List.map (NCicSubstitution.lift shift) (List.tl l));
+ end;
+ F.fprintf f "])"
+ | C.Sort C.Prop -> F.fprintf f "Prop"
+ | C.Sort (C.Type []) -> F.fprintf f "Type0"
+ | C.Sort (C.Type [false, u]) -> F.fprintf f "%s" (NUri.name_of_uri u)
+ | C.Sort (C.Type [true, u]) -> F.fprintf f "S(%s)" (NUri.name_of_uri u)
+ | C.Sort (C.Type l) ->
+ F.fprintf f "Max(";
+ aux ctx (C.Sort (C.Type [List.hd l]));
+ List.iter (fun x -> F.fprintf f ",";aux ctx (C.Sort (C.Type [x])))
+ (List.tl l);
+ F.fprintf f ")"
in
- aux (List.map fst context)
+ aux ~toplevel:true (List.map fst context) t;
+ F.fprintf f "@?";
+ Buffer.contents buff
+;;
+
+let ppterm ~context ~subst ~metasenv ?(margin=80) ?inside_fix t =
+ Format.set_margin margin;
+ ppterm ~context ~subst ~metasenv ?inside_fix t
+;;
+
+let rec ppcontext ?(sep="\n") ~subst ~metasenv = function
+ | [] -> ""
+ | (name, NCic.Decl t) :: tl ->
+ ppcontext ~sep ~subst ~metasenv tl ^
+ name ^ ": " ^ ppterm ~subst ~metasenv ~context:tl t ^ sep
+ | (name, NCic.Def (bo,ty)) :: tl->
+ ppcontext ~sep ~subst ~metasenv tl ^
+ name ^ ": " ^ ppterm ~subst ~metasenv ~context:tl ty ^
+ " := " ^ ppterm ~subst ~metasenv ~context:tl bo ^ sep
+;;
+
+let rec ppmetasenv ~subst metasenv = function
+ | [] -> ""
+ | (i,(name, ctx, ty)) :: tl ->
+ let name = match name with Some n -> "("^n^")" | _ -> "" in
+ ppcontext ~sep:"; " ~subst ~metasenv ctx ^
+ " ⊢ ?"^string_of_int i^name^" : " ^
+ ppterm ~metasenv ~subst ~context:ctx ty ^ "\n" ^
+ ppmetasenv ~subst metasenv tl
+;;
+
+let ppmetasenv ~subst metasenv = ppmetasenv ~subst metasenv metasenv;;
+
+let rec ppsubst ~subst ~metasenv = function
+ | [] -> ""
+ | (i,(name, ctx, t, ty)) :: tl ->
+
+ let name = match name with Some n -> "("^n^")" | _ -> "" in
+ ppcontext ~sep:"; " ~subst ~metasenv ctx ^
+ " ⊢ ?"^string_of_int i^name^" := " ^
+ ppterm ~metasenv ~subst ~context:ctx t ^ " : " ^
+ ppterm ~metasenv ~subst ~context:ctx ty ^ "\n" ^
+ ppsubst ~subst ~metasenv tl
+;;
+
+let ppsubst ~metasenv subst = ppsubst ~metasenv ~subst subst;;
+
+
+let ppobj (u,_,metasenv, subst, o) =
+ "metasenv:\n" ^ ppmetasenv ~subst metasenv ^ "\n" ^
+ "subst:\n" ^ ppsubst subst ~metasenv ^ "\n" ^
+ match o with
+ | NCic.Fixpoint (b, fl, _) ->
+ "{"^NUri.string_of_uri u^"}\n"^
+ (if b then "let rec " else "let corec ") ^
+ String.concat "\nand "
+ (List.map (fun (_,name,n,ty,bo) ->
+ name^ " on " ^ string_of_int n ^ " : " ^
+ ppterm ~metasenv ~subst ~context:[] ty ^ " :=\n"^
+ ppterm ~metasenv ~subst ~context:[] ~inside_fix:true bo) fl)
+ | NCic.Inductive (b, leftno,tyl, _) ->
+ "{"^NUri.string_of_uri u^"} with "^string_of_int leftno^" fixed params\n"^
+ (if b then "inductive " else "coinductive ")^
+ String.concat "\nand "
+ (List.map (fun (_,name,ty,cl) ->
+ name^": "^ppterm ~metasenv ~subst ~context:[] ty^ " :=\n"^
+ String.concat "\n"
+ (List.map (fun (_,name,ty) ->
+ " | "^name^": "^ppterm ~metasenv ~subst ~context:[] ty)
+ cl)) tyl) ^ "."
+ | NCic.Constant (_,name,None,ty, _) ->
+ "{"^NUri.string_of_uri u^"}\n"^
+ "axiom " ^ name ^ " : " ^
+ ppterm ~metasenv ~subst ~context:[] ty ^ "\n"
+ | NCic.Constant (_,name,Some bo,ty, _) ->
+ "{"^NUri.string_of_uri u^"}\n"^
+ "definition " ^ name ^ " : " ^
+ ppterm ~metasenv ~subst ~context:[] ty ^ " := \n"^
+ ppterm ~metasenv ~subst ~context:[] bo ^ "\n"
+;;
+
+let _ = NCicSubstitution.set_ppterm (ppterm ~margin:80);;
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