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
46 let rec pp_term = function
47 | AttributedTerm (_, term) when print_attributes ->
48 sprintf "@[%s]" (pp_term term)
49 | AttributedTerm (_, term) -> pp_term term
52 sprintf "(%s)" (String.concat " " (List.map pp_term terms))
53 | Binder (`Forall, (Ident ("_", None), typ), body)
54 | Binder (`Pi, (Ident ("_", None), typ), body) ->
55 sprintf "(%s \\to %s)"
56 (match typ with None -> "?" | Some typ -> pp_term typ)
58 | Binder (kind, var, body) ->
59 sprintf "\\%s %s.%s" (pp_binder kind) (pp_capture_variable var)
61 | Case (term, indtype, typ, patterns) ->
62 sprintf "%smatch %s with %s"
63 (match typ with None -> "" | Some t -> sprintf "<%s>" (pp_term t))
64 (pp_term term) (pp_patterns patterns)
65 | LetIn (var, t1, t2) ->
66 sprintf "let %s = %s in %s" (pp_capture_variable var) (pp_term t1)
68 | LetRec (kind, definitions, term) ->
69 sprintf "let %s %s in %s"
70 (match kind with `Inductive -> "rec" | `CoInductive -> "corec")
71 (String.concat " and "
73 (fun (var, body, _) ->
74 sprintf "%s = %s" (pp_capture_variable var) (pp_term body))
77 | Ident (name, Some []) | Ident (name, None)
78 | Uri (name, Some []) | Uri (name, None) ->
80 | Ident (name, Some substs)
81 | Uri (name, Some substs) ->
82 sprintf "%s \\subst [%s]" name (pp_substs substs)
84 | Meta (index, substs) ->
85 sprintf "%d[%s]" index
87 (List.map (function None -> "_" | Some term -> pp_term term) substs))
90 | Sort `Prop -> "Prop"
91 | Sort `Type -> "Type"
92 | Sort `CProp -> "CProp"
93 | Symbol (name, _) -> name
97 | Literal l -> pp_literal l
98 | Layout l -> pp_layout l
99 | Magic m -> pp_magic m
100 | Variable v -> pp_variable v
102 and pp_subst (name, term) = sprintf "%s \\Assign %s" name (pp_term term)
103 and pp_substs substs = String.concat "; " (List.map pp_subst substs)
105 and pp_pattern ((head, vars), term) =
106 sprintf "%s \\Rightarrow %s"
110 sprintf "(%s %s)" head
111 (String.concat " " (List.map pp_capture_variable vars)))
114 and pp_patterns patterns =
115 sprintf "[%s]" (String.concat " | " (List.map pp_pattern patterns))
117 and pp_capture_variable = function
118 | term, None -> pp_term term
119 | term, Some typ -> "(" ^ pp_term term ^ ": " ^ pp_term typ ^ ")"
121 and pp_layout = function
122 | Sub (t1, t2) -> sprintf "%s \\SUB %s" (pp_term t1) (pp_term t2)
123 | Sup (t1, t2) -> sprintf "%s \\SUP %s" (pp_term t1) (pp_term t2)
124 | Below (t1, t2) -> sprintf "%s \\BELOW %s" (pp_term t1) (pp_term t2)
125 | Above (t1, t2) -> sprintf "%s \\ABOVE %s" (pp_term t1) (pp_term t2)
126 | Over (t1, t2) -> sprintf "[%s \\OVER %s]" (pp_term t1) (pp_term t2)
127 | Atop (t1, t2) -> sprintf "[%s \\ATOP %s]" (pp_term t1) (pp_term t2)
128 | Frac (t1, t2) -> sprintf "\\FRAC %s %s" (pp_term t1) (pp_term t2)
129 | Sqrt t -> sprintf "\\SQRT %s" (pp_term t)
130 | Root (arg, index) ->
131 sprintf "\\ROOT %s \\OF %s" (pp_term index) (pp_term arg)
134 sprintf "\\HBOX [%s]" (String.concat " " (List.map pp_term terms))
136 sprintf "\\VBOX [%s]" (String.concat " " (List.map pp_term terms))
138 and pp_magic = function
139 | List0 (t, sep_opt) ->
140 sprintf "\\LIST0 %s%s" (pp_term t) (pp_sep_opt sep_opt)
141 | List1 (t, sep_opt) ->
142 sprintf "\\LIST1 %s%s" (pp_term t) (pp_sep_opt sep_opt)
143 | Opt t -> sprintf "\\OPT %s" (pp_term t)
144 | Fold (k, p_base, names, p_rec) ->
145 let acc = match names with acc :: _ -> acc | _ -> assert false in
146 sprintf "\\FOLD %s \\[%s\\] \\LAMBDA %s \\[%s\\]"
147 (pp_fold_kind k) (pp_term p_base) acc (pp_term p_rec)
148 | Default (p_some, p_none) ->
149 sprintf "\\DEFAULT \\[%s\\] \\[%s\\]" (pp_term p_some) (pp_term p_none)
151 and pp_fold_kind = function
155 and pp_sep_opt = function
157 | Some sep -> sprintf "\\SEP %s" (pp_literal sep)
159 and pp_variable = function
160 | NumVar s -> "\\NUM " ^ s
161 | IdentVar s -> "\\IDENT " ^ s
162 | TermVar s -> "\\TERM " ^ s
163 | Ascription (t, n) -> sprintf "[%s \\AS %s]" (pp_term t) n
164 | FreshVar n -> "\\FRESH " ^ n
166 let rec pp_value = function
167 | TermValue t -> sprintf "$%s$" (pp_term t)
168 | StringValue s -> sprintf "\"%s\"" s
170 | OptValue (Some v) -> "Some " ^ pp_value v
171 | OptValue None -> "None"
172 | ListValue l -> sprintf "[%s]" (String.concat "; " (List.map pp_value l))
174 let rec pp_value_type =
177 | StringType -> "String"
178 | NumType -> "Number"
179 | OptType t -> "Maybe " ^ pp_value_type t
180 | ListType l -> "List " ^ pp_value_type l
185 (fun (name, (ty, value)) ->
186 sprintf "%s : %s = %s" name (pp_value_type ty) (pp_value value))