1 (* Copyright (C) 2004-2005, HELM Team.
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4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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15 * GNU General Public License for more details.
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30 module Ast = CicNotationPt
31 module Env = CicNotationEnv
33 (* when set to true debugging information, not in sync with input syntax, will
34 * be added to the output of pp_term.
35 * set to false if you need, for example, cut and paste from matitac output to
37 let debug_printing = true
39 let pp_binder = function
46 if debug_printing then
47 (function (* debugging version *)
48 | `Symbol s -> sprintf "symbol(%s)" s
49 | `Keyword s -> sprintf "keyword(%s)" s
50 | `Number s -> sprintf "number(%s)" s)
59 | Gramext.NonA -> "NonA"
60 | Gramext.LeftA -> "LeftA"
61 | Gramext.RightA -> "RightA"
65 (* `None -> "`None" *)
72 | `IdRef id -> sprintf "x(%s)" id
76 (List.map (fun (_, n, v) -> sprintf "%s=%s" n v) attrs))
77 | `Level (prec, assoc) -> sprintf "L(%d%s)" prec (pp_assoc assoc)
80 | `ChildPos p -> sprintf "P(%s)" (pp_pos p)
82 let pp_capture_variable pp_term =
84 | term, None -> pp_term (* ~pp_parens:false *) term
85 | term, Some typ -> "(" ^ pp_term (* ~pp_parens:false *) term ^ ": " ^ pp_term typ ^ ")"
87 let rec pp_term ?(pp_parens = true) t =
90 | Ast.AttributedTerm (attr, term) when debug_printing ->
91 sprintf "%s[%s]" (pp_attribute attr) (pp_term ~pp_parens:false term)
92 | Ast.AttributedTerm (`Raw text, _) -> text
93 | Ast.AttributedTerm (_, term) -> pp_term ~pp_parens:false term
95 sprintf "%s" (String.concat " " (List.map pp_term terms))
96 | Ast.Binder (`Forall, (Ast.Ident ("_", None), typ), body)
97 | Ast.Binder (`Pi, (Ast.Ident ("_", None), typ), body) ->
99 (match typ with None -> "?" | Some typ -> pp_term typ)
100 (pp_term ~pp_parens:true body)
101 | Ast.Binder (kind, var, body) ->
102 sprintf "\\%s %s.%s" (pp_binder kind) (pp_capture_variable pp_term var)
103 (pp_term ~pp_parens:true body)
104 | Ast.Case (term, indtype, typ, patterns) ->
105 sprintf "match %s%s%s with %s"
109 | Some (ty, href_opt) ->
110 sprintf " in %s%s" ty
111 (match debug_printing, href_opt with
113 sprintf "(i.e.%s)" (UriManager.string_of_uri uri)
115 (match typ with None -> "" | Some t -> sprintf " return %s" (pp_term t))
116 (pp_patterns patterns)
117 | Ast.Cast (t1, t2) -> sprintf "(%s: %s)" (pp_term ~pp_parens:true t1) (pp_term ~pp_parens:true t2)
118 | Ast.LetIn (var, t1, t2) ->
119 sprintf "let %s \\def %s in %s" (pp_capture_variable pp_term var) (pp_term ~pp_parens:true t1)
120 (pp_term ~pp_parens:true t2)
121 | Ast.LetRec (kind, definitions, term) ->
122 let rec get_guard i = function
123 | [] -> (*assert false*) Ast.Implicit
124 | [term, _] when i = 1 -> term
125 | _ :: tl -> get_guard (pred i) tl
127 let map (params, (id,typ), body, i) =
133 sprintf "%s %s on %s: %s \\def %s"
134 (pp_term ~pp_parens:false term)
135 (String.concat " " (List.map (pp_capture_variable pp_term) params))
136 (pp_term ~pp_parens:false (get_guard i params))
137 (pp_term typ) (pp_term body)
139 sprintf "let %s %s in %s"
140 (match kind with `Inductive -> "rec" | `CoInductive -> "corec")
141 (String.concat " and " (List.map map definitions))
143 | Ast.Ident (name, Some []) | Ast.Ident (name, None)
144 | Ast.Uri (name, Some []) | Ast.Uri (name, None) ->
146 | Ast.Ident (name, Some substs)
147 | Ast.Uri (name, Some substs) ->
148 sprintf "%s \\subst [%s]" name (pp_substs substs)
149 | Ast.Implicit -> "?"
150 | Ast.Meta (index, substs) ->
151 sprintf "%d[%s]" index
153 (List.map (function None -> "_" | Some t -> pp_term t) substs))
154 | Ast.Num (num, _) -> num
155 | Ast.Sort `Set -> "Set"
156 | Ast.Sort `Prop -> "Prop"
157 | Ast.Sort (`Type _) -> "Type"
158 | Ast.Sort `CProp -> "CProp"
159 | Ast.Symbol (name, _) -> "'" ^ name
161 | Ast.UserInput -> ""
163 | Ast.Literal l -> pp_literal l
164 | Ast.Layout l -> pp_layout l
165 | Ast.Magic m -> pp_magic m
166 | Ast.Variable v -> pp_variable v
168 match pp_parens, t with
172 | true, Ast.Ident (_, Some [])
173 | true, Ast.Ident (_, None) -> t_pp
174 | _ -> sprintf "(%s)" t_pp
176 and pp_subst (name, term) = sprintf "%s \\Assign %s" name (pp_term term)
177 and pp_substs substs = String.concat "; " (List.map pp_subst substs)
179 and pp_pattern ((head, href, vars), term) =
182 (match debug_printing, href with
183 | true, Some uri -> sprintf "(i.e.%s)" (UriManager.string_of_uri uri)
186 sprintf "%s \\Rightarrow %s"
190 sprintf "(%s %s)" head_pp
191 (String.concat " " (List.map (pp_capture_variable pp_term) vars)))
194 and pp_patterns patterns =
195 sprintf "[%s]" (String.concat " | " (List.map pp_pattern patterns))
197 and pp_box_spec (kind, spacing, indent) =
198 let int_of_bool b = if b then 1 else 0 in
201 Ast.H -> "H" | Ast.V -> "V" | Ast.HV -> "HV" | Ast.HOV -> "HOV"
203 sprintf "%sBOX%d%d" kind_string (int_of_bool spacing) (int_of_bool indent)
205 and pp_layout = function
206 | Ast.Sub (t1, t2) -> sprintf "%s \\SUB %s" (pp_term t1) (pp_term t2)
207 | Ast.Sup (t1, t2) -> sprintf "%s \\SUP %s" (pp_term t1) (pp_term t2)
208 | Ast.Below (t1, t2) -> sprintf "%s \\BELOW %s" (pp_term t1) (pp_term t2)
209 | Ast.Above (t1, t2) -> sprintf "%s \\ABOVE %s" (pp_term t1) (pp_term t2)
210 | Ast.Over (t1, t2) -> sprintf "[%s \\OVER %s]" (pp_term t1) (pp_term t2)
211 | Ast.Atop (t1, t2) -> sprintf "[%s \\ATOP %s]" (pp_term t1) (pp_term t2)
212 | Ast.Frac (t1, t2) -> sprintf "\\FRAC %s %s" (pp_term t1) (pp_term t2)
213 | Ast.Sqrt t -> sprintf "\\SQRT %s" (pp_term t)
214 | Ast.Root (arg, index) ->
215 sprintf "\\ROOT %s \\OF %s" (pp_term index) (pp_term arg)
216 | Ast.Break -> "\\BREAK"
217 (* | Space -> "\\SPACE" *)
218 | Ast.Box (box_spec, terms) ->
219 sprintf "\\%s [%s]" (pp_box_spec box_spec)
220 (String.concat " " (List.map pp_term terms))
222 sprintf "\\GROUP [%s]" (String.concat " " (List.map pp_term terms))
224 and pp_magic = function
225 | Ast.List0 (t, sep_opt) ->
226 sprintf "list0 %s%s" (pp_term t) (pp_sep_opt sep_opt)
227 | Ast.List1 (t, sep_opt) ->
228 sprintf "list1 %s%s" (pp_term t) (pp_sep_opt sep_opt)
229 | Ast.Opt t -> sprintf "opt %s" (pp_term t)
230 | Ast.Fold (kind, p_base, names, p_rec) ->
231 let acc = match names with acc :: _ -> acc | _ -> assert false in
232 sprintf "fold %s %s rec %s %s"
233 (pp_fold_kind kind) (pp_term p_base) acc (pp_term p_rec)
234 | Ast.Default (p_some, p_none) ->
235 sprintf "default %s %s" (pp_term p_some) (pp_term p_none)
236 | Ast.If (p_test, p_true, p_false) ->
237 sprintf "if %s then %s else %s"
238 (pp_term p_test) (pp_term p_true) (pp_term p_false)
241 and pp_fold_kind = function
245 and pp_sep_opt = function
247 | Some sep -> sprintf " sep %s" (pp_literal sep)
249 and pp_variable = function
250 | Ast.NumVar s -> "number " ^ s
251 | Ast.IdentVar s -> "ident " ^ s
252 | Ast.TermVar s -> "term " ^ s
253 | Ast.Ascription (t, n) -> assert false
254 | Ast.FreshVar n -> "fresh " ^ n
256 let _pp_term = ref (pp_term ~pp_parens:false)
257 let pp_term t = !_pp_term t
258 let set_pp_term f = _pp_term := f
260 let pp_params pp_term = function
262 | params -> " " ^ String.concat " " (List.map (pp_capture_variable pp_term) params)
264 let pp_flavour = function
265 | `Definition -> "definition"
266 | `MutualDefinition -> assert false
270 | `Remark -> "remark"
271 | `Theorem -> "theorem"
272 | `Variant -> "variant"
275 let pp_fields pp_term fields =
276 (if fields <> [] then "\n" else "") ^
279 (fun (name,ty,coercion,arity) ->
281 if coercion then (":" ^
282 if arity > 0 then string_of_int arity else "" ^ ">") else ": " ^
285 let pp_obj pp_term = function
286 | Ast.Inductive (params, types) ->
287 let pp_constructors constructors =
289 (List.map (fun (name, typ) -> sprintf "| %s: %s" name (pp_term typ))
292 let pp_type (name, _, typ, constructors) =
293 sprintf "\nwith %s: %s \\def\n%s" name (pp_term typ)
294 (pp_constructors constructors)
298 | (name, inductive, typ, constructors) :: tl ->
300 sprintf "%sinductive %s%s: %s \\def\n%s"
301 (if inductive then "" else "co") name (pp_params pp_term params)
302 (pp_term typ) (pp_constructors constructors)
304 fst_typ_pp ^ String.concat "" (List.map pp_type tl))
305 | Ast.Theorem (`MutualDefinition, name, typ, body) ->
306 sprintf "<<pretty printing of mutual definitions not implemented yet>>"
307 | Ast.Theorem (flavour, name, typ, body) ->
308 sprintf "%s %s:\n %s\n%s"
314 | Some body -> "\\def\n " ^ pp_term body)
315 | Ast.Record (params,name,ty,fields) ->
316 "record " ^ name ^ " " ^ pp_params pp_term params ^ ": " ^ pp_term ty ^
317 " \\def {" ^ pp_fields pp_term fields ^ "\n}"
319 let rec pp_value = function
320 | Env.TermValue t -> sprintf "$%s$" (pp_term t)
321 | Env.StringValue s -> sprintf "\"%s\"" s
322 | Env.NumValue n -> n
323 | Env.OptValue (Some v) -> "Some " ^ pp_value v
324 | Env.OptValue None -> "None"
325 | Env.ListValue l -> sprintf "[%s]" (String.concat "; " (List.map pp_value l))
327 let rec pp_value_type =
329 | Env.TermType -> "Term"
330 | Env.StringType -> "String"
331 | Env.NumType -> "Number"
332 | Env.OptType t -> "Maybe " ^ pp_value_type t
333 | Env.ListType l -> "List " ^ pp_value_type l
338 (fun (name, (ty, value)) ->
339 sprintf "%s : %s = %s" name (pp_value_type ty) (pp_value value))
342 let rec pp_cic_appl_pattern = function
343 | Ast.UriPattern uri -> UriManager.string_of_uri uri
344 | Ast.VarPattern name -> name
345 | Ast.ImplicitPattern -> "_"
346 | Ast.ApplPattern aps ->
347 sprintf "(%s)" (String.concat " " (List.map pp_cic_appl_pattern aps))