1 (* Copyright (C) 2004-2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
31 (* when set to true debugging information, not in sync with input syntax, will
32 * be added to the output of pp_term.
33 * set to false if you need, for example, cut and paste from matitac output to
35 let debug_printing = false
37 let pp_binder = function
43 let pp_literal = function (* debugging version *)
44 | `Symbol s -> sprintf "symbol(%s)" s
45 | `Keyword s -> sprintf "keyword(%s)" s
46 | `Number s -> sprintf "number(%s)" s
48 (* let pp_literal = function
53 let rec pp_term ?(pp_parens = true) t =
56 | AttributedTerm (`Href _, term) when debug_printing ->
57 sprintf "#[%s]" (pp_term ~pp_parens:false term)
58 | AttributedTerm (`IdRef id, term) when debug_printing ->
59 sprintf "x(%s)[%s]" id (pp_term ~pp_parens:false term)
60 | AttributedTerm (_, term) when debug_printing ->
61 sprintf "@[%s]" (pp_term ~pp_parens:false term)
62 | AttributedTerm (`Raw text, _) -> text
63 | AttributedTerm (_, term) -> pp_term ~pp_parens:false term
66 sprintf "%s" (String.concat " " (List.map pp_term terms))
67 | Binder (`Forall, (Ident ("_", None), typ), body)
68 | Binder (`Pi, (Ident ("_", None), typ), body) ->
70 (match typ with None -> "?" | Some typ -> pp_term typ)
72 | Binder (kind, var, body) ->
73 sprintf "\\%s %s.%s" (pp_binder kind) (pp_capture_variable var)
75 | Case (term, indtype, typ, patterns) ->
76 sprintf "%smatch %s with %s"
77 (match typ with None -> "" | Some t -> sprintf "[%s]" (pp_term t))
78 (pp_term term) (pp_patterns patterns)
79 | Cast (t1, t2) -> sprintf "(%s: %s)" (pp_term t1) (pp_term t2)
80 | LetIn (var, t1, t2) ->
81 sprintf "let %s = %s in %s" (pp_capture_variable var) (pp_term t1)
83 | LetRec (kind, definitions, term) ->
84 sprintf "let %s %s in %s"
85 (match kind with `Inductive -> "rec" | `CoInductive -> "corec")
86 (String.concat " and "
88 (fun (var, body, _) ->
89 sprintf "%s = %s" (pp_capture_variable var) (pp_term body))
92 | Ident (name, Some []) | Ident (name, None)
93 | Uri (name, Some []) | Uri (name, None) ->
95 | Ident (name, Some substs)
96 | Uri (name, Some substs) ->
97 sprintf "%s \\subst [%s]" name (pp_substs substs)
99 | Meta (index, substs) ->
100 sprintf "%d[%s]" index
102 (List.map (function None -> "_" | Some t -> pp_term t) substs))
103 | Num (num, _) -> num
105 | Sort `Prop -> "Prop"
106 | Sort `Type -> "Type"
107 | Sort `CProp -> "CProp"
108 | Symbol (name, _) -> "'" ^ name
112 | Literal l -> pp_literal l
113 | Layout l -> pp_layout l
114 | Magic m -> pp_magic m
115 | Variable v -> pp_variable v
117 if pp_parens then sprintf "(%s)" t_pp
120 and pp_subst (name, term) = sprintf "%s \\Assign %s" name (pp_term term)
121 and pp_substs substs = String.concat "; " (List.map pp_subst substs)
123 and pp_pattern ((head, vars), term) =
124 sprintf "%s \\Rightarrow %s"
128 sprintf "(%s %s)" head
129 (String.concat " " (List.map pp_capture_variable vars)))
132 and pp_patterns patterns =
133 sprintf "[%s]" (String.concat " | " (List.map pp_pattern patterns))
135 and pp_capture_variable = function
136 | term, None -> pp_term term
137 | term, Some typ -> "(" ^ pp_term term ^ ": " ^ pp_term typ ^ ")"
139 and pp_box_spec (kind, spacing, indent) =
140 let int_of_bool b = if b then 1 else 0 in
142 match kind with H -> "H" | V -> "V" | HV -> "HV" | HOV -> "HOV"
144 sprintf "%sBOX%d%d" kind_string (int_of_bool spacing) (int_of_bool indent)
146 and pp_layout = function
147 | Sub (t1, t2) -> sprintf "%s \\SUB %s" (pp_term t1) (pp_term t2)
148 | Sup (t1, t2) -> sprintf "%s \\SUP %s" (pp_term t1) (pp_term t2)
149 | Below (t1, t2) -> sprintf "%s \\BELOW %s" (pp_term t1) (pp_term t2)
150 | Above (t1, t2) -> sprintf "%s \\ABOVE %s" (pp_term t1) (pp_term t2)
151 | Over (t1, t2) -> sprintf "[%s \\OVER %s]" (pp_term t1) (pp_term t2)
152 | Atop (t1, t2) -> sprintf "[%s \\ATOP %s]" (pp_term t1) (pp_term t2)
153 | Frac (t1, t2) -> sprintf "\\FRAC %s %s" (pp_term t1) (pp_term t2)
154 | Sqrt t -> sprintf "\\SQRT %s" (pp_term t)
155 | Root (arg, index) ->
156 sprintf "\\ROOT %s \\OF %s" (pp_term index) (pp_term arg)
158 (* | Space -> "\\SPACE" *)
159 | Box (box_spec, terms) ->
160 sprintf "\\%s [%s]" (pp_box_spec box_spec)
161 (String.concat " " (List.map pp_term terms))
163 sprintf "\\GROUP [%s]" (String.concat " " (List.map pp_term terms))
165 and pp_magic = function
166 | List0 (t, sep_opt) -> sprintf "list0 %s%s" (pp_term t) (pp_sep_opt sep_opt)
167 | List1 (t, sep_opt) -> sprintf "list1 %s%s" (pp_term t) (pp_sep_opt sep_opt)
168 | Opt t -> sprintf "opt %s" (pp_term t)
169 | Fold (kind, p_base, names, p_rec) ->
170 let acc = match names with acc :: _ -> acc | _ -> assert false in
171 sprintf "fold %s %s rec %s %s"
172 (pp_fold_kind kind) (pp_term p_base) acc (pp_term p_rec)
173 | Default (p_some, p_none) ->
174 sprintf "default %s %s" (pp_term p_some) (pp_term p_none)
175 | If (p_test, p_true, p_false) ->
176 sprintf "if %s then %s else %s"
177 (pp_term p_test) (pp_term p_true) (pp_term p_false)
180 and pp_fold_kind = function
184 and pp_sep_opt = function
186 | Some sep -> sprintf " sep %s" (pp_literal sep)
188 and pp_variable = function
189 | NumVar s -> "number " ^ s
190 | IdentVar s -> "ident " ^ s
191 | TermVar s -> "term " ^ s
192 | Ascription (t, n) -> assert false
193 | FreshVar n -> "fresh " ^ n
195 let pp_term t = pp_term ~pp_parens:false t
197 let rec pp_value = function
198 | TermValue t -> sprintf "$%s$" (pp_term t)
199 | StringValue s -> sprintf "\"%s\"" s
201 | OptValue (Some v) -> "Some " ^ pp_value v
202 | OptValue None -> "None"
203 | ListValue l -> sprintf "[%s]" (String.concat "; " (List.map pp_value l))
205 let rec pp_value_type =
208 | StringType -> "String"
209 | NumType -> "Number"
210 | OptType t -> "Maybe " ^ pp_value_type t
211 | ListType l -> "List " ^ pp_value_type l
216 (fun (name, (ty, value)) ->
217 sprintf "%s : %s = %s" name (pp_value_type ty) (pp_value value))