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.
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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/
28 module Ast = CicNotationPt
29 module Env = CicNotationEnv
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
44 if debug_printing then
45 (function (* debugging version *)
46 | `Symbol s -> sprintf "symbol(%s)" s
47 | `Keyword s -> sprintf "keyword(%s)" s
48 | `Number s -> sprintf "number(%s)" s)
55 let rec pp_term ?(pp_parens = true) t =
58 | Ast.AttributedTerm (`Href hrefs, term) when debug_printing ->
60 (String.concat "," (List.map UriManager.string_of_uri hrefs))
61 (pp_term ~pp_parens:false term)
62 | Ast.AttributedTerm (`IdRef id, term) when debug_printing ->
63 sprintf "x(%s)[%s]" id (pp_term ~pp_parens:false term)
64 | Ast.AttributedTerm (_, term) when debug_printing ->
65 sprintf "@[%s]" (pp_term ~pp_parens:false term)
66 | Ast.AttributedTerm (`Raw text, _) -> text
67 | Ast.AttributedTerm (_, term) -> pp_term ~pp_parens:false term
70 sprintf "%s" (String.concat " " (List.map pp_term terms))
71 | Ast.Binder (`Forall, (Ast.Ident ("_", None), typ), body)
72 | Ast.Binder (`Pi, (Ast.Ident ("_", None), typ), body) ->
74 (match typ with None -> "?" | Some typ -> pp_term typ)
76 | Ast.Binder (kind, var, body) ->
77 sprintf "\\%s %s.%s" (pp_binder kind) (pp_capture_variable var)
79 | Ast.Case (term, indtype, typ, patterns) ->
80 sprintf "%smatch %s%s with %s"
81 (match typ with None -> "" | Some t -> sprintf "[%s]" (pp_term t))
85 | Some (ty, href_opt) ->
87 (match debug_printing, href_opt with
89 sprintf "(i.e.%s)" (UriManager.string_of_uri uri)
91 (pp_patterns patterns)
92 | Ast.Cast (t1, t2) -> sprintf "(%s: %s)" (pp_term t1) (pp_term t2)
93 | Ast.LetIn (var, t1, t2) ->
94 sprintf "let %s = %s in %s" (pp_capture_variable var) (pp_term t1)
96 | Ast.LetRec (kind, definitions, term) ->
97 sprintf "let %s %s in %s"
98 (match kind with `Inductive -> "rec" | `CoInductive -> "corec")
99 (String.concat " and "
101 (fun (var, body, _) ->
102 sprintf "%s = %s" (pp_capture_variable var) (pp_term body))
105 | Ast.Ident (name, Some []) | Ast.Ident (name, None)
106 | Ast.Uri (name, Some []) | Ast.Uri (name, None) ->
108 | Ast.Ident (name, Some substs)
109 | Ast.Uri (name, Some substs) ->
110 sprintf "%s \\subst [%s]" name (pp_substs substs)
111 | Ast.Implicit -> "?"
112 | Ast.Meta (index, substs) ->
113 sprintf "%d[%s]" index
115 (List.map (function None -> "_" | Some t -> pp_term t) substs))
116 | Ast.Num (num, _) -> num
117 | Ast.Sort `Set -> "Set"
118 | Ast.Sort `Prop -> "Prop"
119 | Ast.Sort `Type -> "Type"
120 | Ast.Sort `CProp -> "CProp"
121 | Ast.Symbol (name, _) -> "'" ^ name
123 | Ast.UserInput -> ""
125 | Ast.Literal l -> pp_literal l
126 | Ast.Layout l -> pp_layout l
127 | Ast.Magic m -> pp_magic m
128 | Ast.Variable v -> pp_variable v
130 if pp_parens then sprintf "(%s)" t_pp
133 and pp_subst (name, term) = sprintf "%s \\Assign %s" name (pp_term term)
134 and pp_substs substs = String.concat "; " (List.map pp_subst substs)
136 and pp_pattern ((head, href, vars), term) =
139 (match debug_printing, href with
140 | true, Some uri -> sprintf "(i.e.%s)" (UriManager.string_of_uri uri)
143 sprintf "%s \\Rightarrow %s"
147 sprintf "(%s %s)" head_pp
148 (String.concat " " (List.map pp_capture_variable vars)))
151 and pp_patterns patterns =
152 sprintf "[%s]" (String.concat " | " (List.map pp_pattern patterns))
154 and pp_capture_variable = function
155 | term, None -> pp_term term
156 | term, Some typ -> "(" ^ pp_term term ^ ": " ^ pp_term typ ^ ")"
158 and pp_box_spec (kind, spacing, indent) =
159 let int_of_bool b = if b then 1 else 0 in
162 Ast.H -> "H" | Ast.V -> "V" | Ast.HV -> "HV" | Ast.HOV -> "HOV"
164 sprintf "%sBOX%d%d" kind_string (int_of_bool spacing) (int_of_bool indent)
166 and pp_layout = function
167 | Ast.Sub (t1, t2) -> sprintf "%s \\SUB %s" (pp_term t1) (pp_term t2)
168 | Ast.Sup (t1, t2) -> sprintf "%s \\SUP %s" (pp_term t1) (pp_term t2)
169 | Ast.Below (t1, t2) -> sprintf "%s \\BELOW %s" (pp_term t1) (pp_term t2)
170 | Ast.Above (t1, t2) -> sprintf "%s \\ABOVE %s" (pp_term t1) (pp_term t2)
171 | Ast.Over (t1, t2) -> sprintf "[%s \\OVER %s]" (pp_term t1) (pp_term t2)
172 | Ast.Atop (t1, t2) -> sprintf "[%s \\ATOP %s]" (pp_term t1) (pp_term t2)
173 | Ast.Frac (t1, t2) -> sprintf "\\FRAC %s %s" (pp_term t1) (pp_term t2)
174 | Ast.Sqrt t -> sprintf "\\SQRT %s" (pp_term t)
175 | Ast.Root (arg, index) ->
176 sprintf "\\ROOT %s \\OF %s" (pp_term index) (pp_term arg)
177 | Ast.Break -> "\\BREAK"
178 (* | Space -> "\\SPACE" *)
179 | Ast.Box (box_spec, terms) ->
180 sprintf "\\%s [%s]" (pp_box_spec box_spec)
181 (String.concat " " (List.map pp_term terms))
183 sprintf "\\GROUP [%s]" (String.concat " " (List.map pp_term terms))
185 and pp_magic = function
186 | Ast.List0 (t, sep_opt) ->
187 sprintf "list0 %s%s" (pp_term t) (pp_sep_opt sep_opt)
188 | Ast.List1 (t, sep_opt) ->
189 sprintf "list1 %s%s" (pp_term t) (pp_sep_opt sep_opt)
190 | Ast.Opt t -> sprintf "opt %s" (pp_term t)
191 | Ast.Fold (kind, p_base, names, p_rec) ->
192 let acc = match names with acc :: _ -> acc | _ -> assert false in
193 sprintf "fold %s %s rec %s %s"
194 (pp_fold_kind kind) (pp_term p_base) acc (pp_term p_rec)
195 | Ast.Default (p_some, p_none) ->
196 sprintf "default %s %s" (pp_term p_some) (pp_term p_none)
197 | Ast.If (p_test, p_true, p_false) ->
198 sprintf "if %s then %s else %s"
199 (pp_term p_test) (pp_term p_true) (pp_term p_false)
202 and pp_fold_kind = function
206 and pp_sep_opt = function
208 | Some sep -> sprintf " sep %s" (pp_literal sep)
210 and pp_variable = function
211 | Ast.NumVar s -> "number " ^ s
212 | Ast.IdentVar s -> "ident " ^ s
213 | Ast.TermVar s -> "term " ^ s
214 | Ast.Ascription (t, n) -> assert false
215 | Ast.FreshVar n -> "fresh " ^ n
217 let pp_term t = pp_term ~pp_parens:false t
219 let rec pp_value = function
220 | Env.TermValue t -> sprintf "$%s$" (pp_term t)
221 | Env.StringValue s -> sprintf "\"%s\"" s
222 | Env.NumValue n -> n
223 | Env.OptValue (Some v) -> "Some " ^ pp_value v
224 | Env.OptValue None -> "None"
225 | Env.ListValue l -> sprintf "[%s]" (String.concat "; " (List.map pp_value l))
227 let rec pp_value_type =
229 | Env.TermType -> "Term"
230 | Env.StringType -> "String"
231 | Env.NumType -> "Number"
232 | Env.OptType t -> "Maybe " ^ pp_value_type t
233 | Env.ListType l -> "List " ^ pp_value_type l
238 (fun (name, (ty, value)) ->
239 sprintf "%s : %s = %s" name (pp_value_type ty) (pp_value value))