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 let print_attributes = true
33 let pp_binder = function
39 (* let pp_literal = function (* debugging version *)
40 | `Symbol s -> sprintf "symbol(%s)" s
41 | `Keyword s -> sprintf "keyword(%s)" s
42 | `Number s -> sprintf "number(%s)" s *)
44 let pp_literal = function
49 let rec pp_term ?(pp_parens = true) t =
52 (* | AttributedTerm (`Href _, term) when print_attributes ->
53 sprintf "#[%s]" (pp_term term)
54 | AttributedTerm (_, term) when print_attributes ->
55 sprintf "@[%s]" (pp_term term) *)
56 | AttributedTerm (`Raw (text, None), _) -> text
57 | AttributedTerm (`Raw (text, Some `Ast), _) -> sprintf "@{%s}" text
58 | AttributedTerm (`Raw (text, Some `Meta), _) -> sprintf "${%s}" text
59 | AttributedTerm (_, term) -> pp_term ~pp_parens:false term
62 sprintf "%s" (String.concat " " (List.map pp_term terms))
63 | Binder (`Forall, (Ident ("_", None), typ), body)
64 | Binder (`Pi, (Ident ("_", None), typ), body) ->
66 (match typ with None -> "?" | Some typ -> pp_term typ)
68 | Binder (kind, var, body) ->
69 sprintf "\\%s %s.%s" (pp_binder kind) (pp_capture_variable var)
71 | Case (term, indtype, typ, patterns) ->
72 sprintf "%smatch %s with %s"
73 (match typ with None -> "" | Some t -> sprintf "[%s]" (pp_term t))
74 (pp_term term) (pp_patterns patterns)
75 | Cast (t1, t2) -> sprintf "(%s: %s)" (pp_term t1) (pp_term t2)
76 | LetIn (var, t1, t2) ->
77 sprintf "let %s = %s in %s" (pp_capture_variable var) (pp_term t1)
79 | LetRec (kind, definitions, term) ->
80 sprintf "let %s %s in %s"
81 (match kind with `Inductive -> "rec" | `CoInductive -> "corec")
82 (String.concat " and "
84 (fun (var, body, _) ->
85 sprintf "%s = %s" (pp_capture_variable var) (pp_term body))
88 | Ident (name, Some []) | Ident (name, None)
89 | Uri (name, Some []) | Uri (name, None) ->
91 | Ident (name, Some substs)
92 | Uri (name, Some substs) ->
93 sprintf "%s \\subst [%s]" name (pp_substs substs)
95 | Meta (index, substs) ->
96 sprintf "%d[%s]" index
98 (List.map (function None -> "_" | Some t -> pp_term t) substs))
101 | Sort `Prop -> "Prop"
102 | Sort `Type -> "Type"
103 | Sort `CProp -> "CProp"
104 | Symbol (name, _) -> name
108 | Literal l -> pp_literal l
109 | Layout l -> pp_layout l
110 | Magic m -> pp_magic m
111 | Variable v -> pp_variable v
113 if pp_parens then sprintf "(%s)" t_pp
116 and pp_subst (name, term) = sprintf "%s \\Assign %s" name (pp_term term)
117 and pp_substs substs = String.concat "; " (List.map pp_subst substs)
119 and pp_pattern ((head, vars), term) =
120 sprintf "%s \\Rightarrow %s"
124 sprintf "(%s %s)" head
125 (String.concat " " (List.map pp_capture_variable vars)))
128 and pp_patterns patterns =
129 sprintf "[%s]" (String.concat " | " (List.map pp_pattern patterns))
131 and pp_capture_variable = function
132 | term, None -> pp_term term
133 | term, Some typ -> "(" ^ pp_term term ^ ": " ^ pp_term typ ^ ")"
135 and pp_box_spec (kind, spacing, indent) =
136 let int_of_bool b = if b then 1 else 0 in
138 match kind with H -> "H" | V -> "V" | HV -> "HV" | HOV -> "HOV"
140 sprintf "%sBOX%d%d" kind_string (int_of_bool spacing) (int_of_bool indent)
142 and pp_layout = function
143 | Sub (t1, t2) -> sprintf "%s \\SUB %s" (pp_term t1) (pp_term t2)
144 | Sup (t1, t2) -> sprintf "%s \\SUP %s" (pp_term t1) (pp_term t2)
145 | Below (t1, t2) -> sprintf "%s \\BELOW %s" (pp_term t1) (pp_term t2)
146 | Above (t1, t2) -> sprintf "%s \\ABOVE %s" (pp_term t1) (pp_term t2)
147 | Over (t1, t2) -> sprintf "[%s \\OVER %s]" (pp_term t1) (pp_term t2)
148 | Atop (t1, t2) -> sprintf "[%s \\ATOP %s]" (pp_term t1) (pp_term t2)
149 | Frac (t1, t2) -> sprintf "\\FRAC %s %s" (pp_term t1) (pp_term t2)
150 | Sqrt t -> sprintf "\\SQRT %s" (pp_term t)
151 | Root (arg, index) ->
152 sprintf "\\ROOT %s \\OF %s" (pp_term index) (pp_term arg)
154 (* | Space -> "\\SPACE" *)
155 | Box (box_spec, terms) ->
156 sprintf "\\%s [%s]" (pp_box_spec box_spec)
157 (String.concat " " (List.map pp_term terms))
159 sprintf "\\GROUP [%s]" (String.concat " " (List.map pp_term terms))
161 and pp_magic = function
162 | List0 (t, sep_opt) -> sprintf "list0 %s%s" (pp_term t) (pp_sep_opt sep_opt)
163 | List1 (t, sep_opt) -> sprintf "list1 %s%s" (pp_term t) (pp_sep_opt sep_opt)
164 | Opt t -> sprintf "opt %s" (pp_term t)
165 | Fold (kind, p_base, names, p_rec) ->
166 let acc = match names with acc :: _ -> acc | _ -> assert false in
167 sprintf "fold %s %s rec %s %s"
168 (pp_fold_kind kind) (pp_term p_base) acc (pp_term p_rec)
169 | Default (p_some, p_none) ->
170 sprintf "default %s %s" (pp_term p_some) (pp_term p_none)
171 | If (p_test, p_true, p_false) ->
172 sprintf "if %s then %s else %s"
173 (pp_term p_test) (pp_term p_true) (pp_term p_false)
176 and pp_fold_kind = function
180 and pp_sep_opt = function
182 | Some sep -> sprintf " sep %s" (pp_literal sep)
184 and pp_variable = function
185 | NumVar s -> "number " ^ s
186 | IdentVar s -> "ident " ^ s
187 | TermVar s -> "term " ^ s
188 | Ascription (t, n) -> assert false
189 | FreshVar n -> "fresh " ^ n
191 let pp_term t = pp_term ~pp_parens:false t
193 let rec pp_value = function
194 | TermValue t -> sprintf "$%s$" (pp_term t)
195 | StringValue s -> sprintf "\"%s\"" s
197 | OptValue (Some v) -> "Some " ^ pp_value v
198 | OptValue None -> "None"
199 | ListValue l -> sprintf "[%s]" (String.concat "; " (List.map pp_value l))
201 let rec pp_value_type =
204 | StringType -> "String"
205 | NumType -> "Number"
206 | OptType t -> "Maybe " ^ pp_value_type t
207 | ListType l -> "List " ^ pp_value_type l
212 (fun (name, (ty, value)) ->
213 sprintf "%s : %s = %s" name (pp_value_type ty) (pp_value value))