2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
15 ref (fun ~context:_ ~subst:_ ~metasenv:_ ?inside_fix _ ->
16 ignore (inside_fix) ; "Please, set a pp callback")
19 let set_ppterm f = ppterm := f;;
21 let ppterm ~context ~subst ~metasenv ?inside_fix t =
22 !ppterm ~context ~subst ~metasenv ?inside_fix t
28 let r2s pp_fix_name r =
31 | R.Ref (u,R.Ind (_,i,_)) ->
32 (match NCicLibrary.get_obj u with
33 | _,_,_,_, C.Inductive (_,_,itl,_) ->
34 let _,name,_,_ = List.nth itl i in name
36 | R.Ref (u,R.Con (i,j,_)) ->
37 (match NCicLibrary.get_obj u with
38 | _,_,_,_, C.Inductive (_,_,itl,_) ->
39 let _,_,_,cl = List.nth itl i in
40 let _,name,_ = List.nth cl (j-1) in name
42 | R.Ref (u,(R.Decl | R.Def _)) ->
43 (match NCicLibrary.get_obj u with
44 | _,_,_,_, C.Constant (_,name,_,_,_) -> name
46 | R.Ref (u,(R.Fix (i,_,_)|R.CoFix i)) ->
47 (match NCicLibrary.get_obj u with
48 | _,_,_,_, C.Fixpoint (_,fl,_) ->
50 let _,name,_,_,_ = List.nth fl i in name
52 NUri.name_of_uri u ^"("^ string_of_int i ^ ")"
54 with NCicLibrary.ObjectNotFound _ -> R.string_of_reference r
57 let trivial_pp_term ~context ~subst:_ ~metasenv:_ ?(inside_fix=false) t =
58 let buff = Buffer.create 100 in
59 let f = Format.formatter_of_buffer buff in
60 let module F = Format in
61 let rec aux ?(toplevel=false) ctx = function
64 let name = List.nth ctx (m-1) in
65 F.fprintf f "%s" (if name = "_" then "__"^string_of_int m else name)
66 with Failure _ -> F.fprintf f " -%d" (m - List.length ctx))
67 | C.Const r -> F.fprintf f "%s" (r2s inside_fix r)
69 if not toplevel then F.fprintf f "(";
70 F.fprintf f "@[<hov 1>";
72 | C.Prod ("_",_,_) -> aux ~toplevel:false ctx s
73 | _ -> aux ~toplevel:true ctx s);
75 aux ~toplevel:true ("_"::ctx) t;
77 if not toplevel then F.fprintf f ")";
78 | C.Prod (name,s,t) ->
79 if not toplevel then F.fprintf f "(";
80 F.fprintf f "@[<hov 1>";
81 F.fprintf f "@[<hov 2>∀%s:@;" name;
82 aux ~toplevel:true ctx s;
84 aux ~toplevel:true (name::ctx) t;
86 if not toplevel then F.fprintf f ")";
87 | C.Lambda (name,s,t) ->
88 if not toplevel then F.fprintf f "(";
89 F.fprintf f "@[<hov 1>";
90 F.fprintf f "λ%s:" name;
91 aux ~toplevel:true ctx s;
93 aux ~toplevel:true (name::ctx) t;
95 if not toplevel then F.fprintf f ")";
96 | C.LetIn (name,ty,t,b) ->
97 if not toplevel then F.fprintf f "(";
98 F.fprintf f "@[<hov 1>";
99 F.fprintf f "let %s:@;" name;
100 aux ~toplevel:true ctx ty;
102 aux ~toplevel:true ctx t;
103 F.fprintf f "@;in@;";
104 (aux ~toplevel:true (name::ctx) b);
106 if not toplevel then F.fprintf f ")";
107 | C.Match (r,oty,t,pl) ->
108 F.fprintf f "@[<hov>match ";
109 aux ~toplevel:true ctx t;
110 F.fprintf f "@;return ";
111 aux ~toplevel:true ctx oty;
112 F.fprintf f "@; @[<v>[ ";
115 F.fprintf f "@[<hov 2>%s ⇒@;" (r2s inside_fix (R.mk_constructor 1 r));
116 aux ~toplevel:true ctx (List.hd pl);
118 ignore(List.fold_left
120 F.fprintf f "@;| @[<hov 2>%s ⇒@;" (r2s inside_fix (R.mk_constructor i r));
121 aux ~toplevel:true ctx t;
126 F.fprintf f "]@] @]";
128 F.fprintf f "@[<hov 2>";
129 if not toplevel then F.fprintf f "(";
131 List.iter (fun x -> F.fprintf f "@;";aux ctx x) (List.tl l);
132 if not toplevel then F.fprintf f ")";
134 | C.Implicit _ -> F.fprintf f "?"
135 | C.Meta (n,_) -> F.fprintf f "?%d" n
136 | C.Sort C.Prop -> F.fprintf f "Prop"
137 | C.Sort (C.Type []) -> F.fprintf f "IllFormedUniverse"
138 | C.Sort (C.Type [false, u]) -> F.fprintf f "%s" (NUri.name_of_uri u)
139 | C.Sort (C.Type [true, u]) -> F.fprintf f "S(%s)" (NUri.name_of_uri u)
140 | C.Sort (C.Type l) ->
142 aux ctx (C.Sort (C.Type [List.hd l]));
143 List.iter (fun x -> F.fprintf f ",";aux ctx (C.Sort (C.Type [x])))
147 aux ~toplevel:true (List.map fst context) t;
153 | (u,_,metasenv,subst,NCic.Fixpoint (b, fl, _)) ->
154 "{"^NUri.string_of_uri u^"}\n"^
155 (if b then "let rec " else "let corec ") ^
156 String.concat "\nand "
157 (List.map (fun (_,name,n,ty,bo) ->
158 name^ " on " ^ string_of_int n ^ " : " ^
159 ppterm ~metasenv ~subst ~context:[] ty ^ " :=\n"^
160 ppterm ~metasenv ~subst ~context:[] ~inside_fix:true bo) fl)
161 | (u,_,metasenv,subst,NCic.Inductive (b, leftno,tyl, _)) ->
162 "{"^NUri.string_of_uri u^"} with "^string_of_int leftno^" fixed params\n"^
163 (if b then "inductive " else "coinductive ")^
164 String.concat "\nand "
165 (List.map (fun (_,name,ty,cl) ->
166 name^": "^ppterm ~metasenv ~subst ~context:[] ty^ " :=\n"^
168 (List.map (fun (_,name,ty) ->
169 " | "^name^": "^ppterm ~metasenv ~subst ~context:[] ty)
171 | (u,_,metasenv,subst,NCic.Constant (_,name,None,ty, _)) ->
172 "{"^NUri.string_of_uri u^"}\n"^
173 "axiom " ^ name ^ " : " ^
174 ppterm ~metasenv ~subst ~context:[] ty ^ "\n"
175 | (u,_,metasenv,subst,NCic.Constant (_,name,Some bo,ty, _)) ->
176 "{"^NUri.string_of_uri u^"}\n"^
177 "definition " ^ name ^ " : " ^
178 ppterm ~metasenv ~subst ~context:[] ty ^ " := \n"^
179 ppterm ~metasenv ~subst ~context:[] bo ^ "\n"
182 let rec ppcontext ~subst ~metasenv = function
184 | (name, NCic.Decl t) :: tl ->
185 ppcontext ~subst ~metasenv tl ^
186 name ^ ": " ^ ppterm ~subst ~metasenv ~context:tl t ^ "\n"
187 | (name, NCic.Def (bo,ty)) :: tl->
188 ppcontext ~subst ~metasenv tl ^
189 name ^ ": " ^ ppterm ~subst ~metasenv ~context:tl ty ^
190 " := " ^ ppterm ~subst ~metasenv ~context:tl bo ^ "\n"