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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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 rec pp_term ?(pp_parens = true) t =
85 | Ast.AttributedTerm (attr, term) when debug_printing ->
86 sprintf "%s[%s]" (pp_attribute attr) (pp_term ~pp_parens:false term)
87 | Ast.AttributedTerm (`Raw text, _) -> text
88 | Ast.AttributedTerm (_, term) -> pp_term ~pp_parens:false term
90 sprintf "%s" (String.concat " " (List.map pp_term terms))
91 | Ast.Binder (`Forall, (Ast.Ident ("_", None), typ), body)
92 | Ast.Binder (`Pi, (Ast.Ident ("_", None), typ), body) ->
94 (match typ with None -> "?" | Some typ -> pp_term typ)
95 (pp_term ~pp_parens:true body)
96 | Ast.Binder (kind, var, body) ->
97 sprintf "\\%s %s.%s" (pp_binder kind) (pp_capture_variable var)
98 (pp_term ~pp_parens:true body)
99 | Ast.Case (term, indtype, typ, patterns) ->
100 sprintf "match %s%s%s with %s"
104 | Some (ty, href_opt) ->
105 sprintf " in %s%s" ty
106 (match debug_printing, href_opt with
108 sprintf "(i.e.%s)" (UriManager.string_of_uri uri)
110 (match typ with None -> "" | Some t -> sprintf " return %s" (pp_term t))
111 (pp_patterns patterns)
112 | Ast.Cast (t1, t2) -> sprintf "(%s: %s)" (pp_term ~pp_parens:true t1) (pp_term ~pp_parens:true t2)
113 | Ast.LetIn (var, t1, t2) ->
114 sprintf "let %s \\def %s in %s" (pp_capture_variable var) (pp_term ~pp_parens:true t1)
115 (pp_term ~pp_parens:true t2)
116 | Ast.LetRec (kind, definitions, term) ->
118 let rec aux i l = function
119 | Ast.Binder (_, var, body) when i > 0 -> aux (pred i) (var :: l) body
120 | body -> List.rev l, body
124 let rec get_guard i = function
126 | [term, _] when i = 1 -> term
127 | _ :: tl -> get_guard (pred i) tl
129 let map (var, body, i) =
130 let id, vars, typ, body = match var with
132 let pvars, pbody = strip i typ in
133 let _, bbody = strip i body in
134 term, pvars, pbody, bbody
137 sprintf "%s %s on %s: %s \\def %s"
138 (pp_term ~pp_parens:false term)
139 (String.concat " " (List.map pp_capture_variable vars))
140 (pp_term ~pp_parens:false (get_guard i vars))
141 (pp_term typ) (pp_term body)
143 sprintf "let %s %s in %s"
144 (match kind with `Inductive -> "rec" | `CoInductive -> "corec")
145 (String.concat " and " (List.map map definitions))
147 | Ast.Ident (name, Some []) | Ast.Ident (name, None)
148 | Ast.Uri (name, Some []) | Ast.Uri (name, None) ->
150 | Ast.Ident (name, Some substs)
151 | Ast.Uri (name, Some substs) ->
152 sprintf "%s \\subst [%s]" name (pp_substs substs)
153 | Ast.Implicit -> "?"
154 | Ast.Meta (index, substs) ->
155 sprintf "%d[%s]" index
157 (List.map (function None -> "_" | Some t -> pp_term t) substs))
158 | Ast.Num (num, _) -> num
159 | Ast.Sort `Set -> "Set"
160 | Ast.Sort `Prop -> "Prop"
161 | Ast.Sort (`Type _) -> "Type"
162 | Ast.Sort `CProp -> "CProp"
163 | Ast.Symbol (name, _) -> "'" ^ name
165 | Ast.UserInput -> ""
167 | Ast.Literal l -> pp_literal l
168 | Ast.Layout l -> pp_layout l
169 | Ast.Magic m -> pp_magic m
170 | Ast.Variable v -> pp_variable v
172 match pp_parens, t with
176 | true, Ast.Ident (_, Some [])
177 | true, Ast.Ident (_, None) -> t_pp
178 | _ -> sprintf "(%s)" t_pp
180 and pp_subst (name, term) = sprintf "%s \\Assign %s" name (pp_term term)
181 and pp_substs substs = String.concat "; " (List.map pp_subst substs)
183 and pp_pattern ((head, href, vars), term) =
186 (match debug_printing, href with
187 | true, Some uri -> sprintf "(i.e.%s)" (UriManager.string_of_uri uri)
190 sprintf "%s \\Rightarrow %s"
194 sprintf "(%s %s)" head_pp
195 (String.concat " " (List.map pp_capture_variable vars)))
198 and pp_patterns patterns =
199 sprintf "[%s]" (String.concat " | " (List.map pp_pattern patterns))
201 and pp_capture_variable =
203 | term, None -> pp_term ~pp_parens:false term
204 | term, Some typ -> "(" ^ pp_term ~pp_parens:false term ^ ": " ^ pp_term typ ^ ")"
206 and pp_box_spec (kind, spacing, indent) =
207 let int_of_bool b = if b then 1 else 0 in
210 Ast.H -> "H" | Ast.V -> "V" | Ast.HV -> "HV" | Ast.HOV -> "HOV"
212 sprintf "%sBOX%d%d" kind_string (int_of_bool spacing) (int_of_bool indent)
214 and pp_layout = function
215 | Ast.Sub (t1, t2) -> sprintf "%s \\SUB %s" (pp_term t1) (pp_term t2)
216 | Ast.Sup (t1, t2) -> sprintf "%s \\SUP %s" (pp_term t1) (pp_term t2)
217 | Ast.Below (t1, t2) -> sprintf "%s \\BELOW %s" (pp_term t1) (pp_term t2)
218 | Ast.Above (t1, t2) -> sprintf "%s \\ABOVE %s" (pp_term t1) (pp_term t2)
219 | Ast.Over (t1, t2) -> sprintf "[%s \\OVER %s]" (pp_term t1) (pp_term t2)
220 | Ast.Atop (t1, t2) -> sprintf "[%s \\ATOP %s]" (pp_term t1) (pp_term t2)
221 | Ast.Frac (t1, t2) -> sprintf "\\FRAC %s %s" (pp_term t1) (pp_term t2)
222 | Ast.Sqrt t -> sprintf "\\SQRT %s" (pp_term t)
223 | Ast.Root (arg, index) ->
224 sprintf "\\ROOT %s \\OF %s" (pp_term index) (pp_term arg)
225 | Ast.Break -> "\\BREAK"
226 (* | Space -> "\\SPACE" *)
227 | Ast.Box (box_spec, terms) ->
228 sprintf "\\%s [%s]" (pp_box_spec box_spec)
229 (String.concat " " (List.map pp_term terms))
231 sprintf "\\GROUP [%s]" (String.concat " " (List.map pp_term terms))
233 and pp_magic = function
234 | Ast.List0 (t, sep_opt) ->
235 sprintf "list0 %s%s" (pp_term t) (pp_sep_opt sep_opt)
236 | Ast.List1 (t, sep_opt) ->
237 sprintf "list1 %s%s" (pp_term t) (pp_sep_opt sep_opt)
238 | Ast.Opt t -> sprintf "opt %s" (pp_term t)
239 | Ast.Fold (kind, p_base, names, p_rec) ->
240 let acc = match names with acc :: _ -> acc | _ -> assert false in
241 sprintf "fold %s %s rec %s %s"
242 (pp_fold_kind kind) (pp_term p_base) acc (pp_term p_rec)
243 | Ast.Default (p_some, p_none) ->
244 sprintf "default %s %s" (pp_term p_some) (pp_term p_none)
245 | Ast.If (p_test, p_true, p_false) ->
246 sprintf "if %s then %s else %s"
247 (pp_term p_test) (pp_term p_true) (pp_term p_false)
250 and pp_fold_kind = function
254 and pp_sep_opt = function
256 | Some sep -> sprintf " sep %s" (pp_literal sep)
258 and pp_variable = function
259 | Ast.NumVar s -> "number " ^ s
260 | Ast.IdentVar s -> "ident " ^ s
261 | Ast.TermVar s -> "term " ^ s
262 | Ast.Ascription (t, n) -> assert false
263 | Ast.FreshVar n -> "fresh " ^ n
265 let _pp_term = ref (pp_term ~pp_parens:false)
266 let pp_term t = !_pp_term t
267 let set_pp_term f = _pp_term := f
269 let pp_params = function
275 (fun (name, typ) -> sprintf "(%s:%s)" name (pp_term typ))
278 let pp_flavour = function
279 | `Definition -> "definition"
283 | `Remark -> "remark"
284 | `Theorem -> "theorem"
285 | `Variant -> "variant"
288 let pp_fields fields =
289 (if fields <> [] then "\n" else "") ^
292 (fun (name,ty,coercion,arity) ->
294 if coercion then (":" ^
295 if arity > 0 then string_of_int arity else "" ^ ">") else ": " ^
298 let pp_obj = function
299 | Ast.Inductive (params, types) ->
300 let pp_constructors constructors =
302 (List.map (fun (name, typ) -> sprintf "| %s: %s" name (pp_term typ))
305 let pp_type (name, _, typ, constructors) =
306 sprintf "\nwith %s: %s \\def\n%s" name (pp_term typ)
307 (pp_constructors constructors)
311 | (name, inductive, typ, constructors) :: tl ->
313 sprintf "%sinductive %s%s: %s \\def\n%s"
314 (if inductive then "" else "co") name (pp_params params)
315 (pp_term typ) (pp_constructors constructors)
317 fst_typ_pp ^ String.concat "" (List.map pp_type tl))
318 | Ast.Theorem (flavour, name, typ, body) ->
319 sprintf "%s %s:\n %s\n%s"
325 | Some body -> "\\def\n " ^ pp_term body)
326 | Ast.Record (params,name,ty,fields) ->
327 "record " ^ name ^ " " ^ pp_params params ^ ": " ^ pp_term ty ^
328 " \\def {" ^ pp_fields fields ^ "\n}"
330 let rec pp_value = function
331 | Env.TermValue t -> sprintf "$%s$" (pp_term t)
332 | Env.StringValue s -> sprintf "\"%s\"" s
333 | Env.NumValue n -> n
334 | Env.OptValue (Some v) -> "Some " ^ pp_value v
335 | Env.OptValue None -> "None"
336 | Env.ListValue l -> sprintf "[%s]" (String.concat "; " (List.map pp_value l))
338 let rec pp_value_type =
340 | Env.TermType -> "Term"
341 | Env.StringType -> "String"
342 | Env.NumType -> "Number"
343 | Env.OptType t -> "Maybe " ^ pp_value_type t
344 | Env.ListType l -> "List " ^ pp_value_type l
349 (fun (name, (ty, value)) ->
350 sprintf "%s : %s = %s" name (pp_value_type ty) (pp_value value))
353 let rec pp_cic_appl_pattern = function
354 | Ast.UriPattern uri -> UriManager.string_of_uri uri
355 | Ast.VarPattern name -> name
356 | Ast.ImplicitPattern -> "_"
357 | Ast.ApplPattern aps ->
358 sprintf "(%s)" (String.concat " " (List.map pp_cic_appl_pattern aps))