src/Pure/display.ML
author wenzelm
Sat Dec 08 14:41:36 2001 +0100 (2001-12-08)
changeset 12418 753054ec8e88
parent 12081 f9735aad76dc
child 12831 a2a3896f9c48
permissions -rw-r--r--
tuned print_goals interfaces;
     1 (*  Title:      Pure/display.ML
     2     ID:         $Id$
     3     Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
     4     Copyright   1993  University of Cambridge
     5 
     6 Printing of theories, theorems, etc.
     7 *)
     8 
     9 signature BASIC_DISPLAY =
    10 sig
    11   val goals_limit: int ref
    12   val show_hyps: bool ref
    13   val show_tags: bool ref
    14   val string_of_thm: thm -> string
    15   val print_thm: thm -> unit
    16   val print_thms: thm list -> unit
    17   val prth: thm -> thm
    18   val prthq: thm Seq.seq -> thm Seq.seq
    19   val prths: thm list -> thm list
    20   val string_of_ctyp: ctyp -> string
    21   val print_ctyp: ctyp -> unit
    22   val string_of_cterm: cterm -> string
    23   val print_cterm: cterm -> unit
    24   val print_syntax: theory -> unit
    25   val show_consts: bool ref
    26 end;
    27 
    28 signature DISPLAY =
    29 sig
    30   include BASIC_DISPLAY
    31   val pretty_thm_aux: (sort -> Pretty.T) * (term -> Pretty.T) -> bool -> thm -> Pretty.T
    32   val pretty_thm_no_quote: thm -> Pretty.T
    33   val pretty_thm: thm -> Pretty.T
    34   val pretty_thms: thm list -> Pretty.T
    35   val pretty_thm_sg: Sign.sg -> thm -> Pretty.T
    36   val pretty_thms_sg: Sign.sg -> thm list -> Pretty.T
    37   val pprint_thm: thm -> pprint_args -> unit
    38   val pretty_ctyp: ctyp -> Pretty.T
    39   val pprint_ctyp: ctyp -> pprint_args -> unit
    40   val pretty_cterm: cterm -> Pretty.T
    41   val pprint_cterm: cterm -> pprint_args -> unit
    42   val pretty_theory: theory -> Pretty.T
    43   val pprint_theory: theory -> pprint_args -> unit
    44   val pretty_full_theory: theory -> Pretty.T list
    45   val pretty_name_space: string * NameSpace.T -> Pretty.T
    46   val pretty_goals_aux: (sort -> Pretty.T) * (typ -> Pretty.T) * (term -> Pretty.T)
    47     -> string -> bool * bool -> int -> thm -> Pretty.T list
    48   val pretty_goals: int -> thm -> Pretty.T list
    49   val print_goals: int -> thm -> unit
    50   val current_goals_markers: (string * string * string) ref
    51   val pretty_current_goals: int -> int -> thm -> Pretty.T list
    52   val print_current_goals_default: int -> int -> thm -> unit
    53   val print_current_goals_fn: (int -> int -> thm -> unit) ref
    54 end;
    55 
    56 structure Display: DISPLAY =
    57 struct
    58 
    59 
    60 (** print thm **)
    61 
    62 val goals_limit = ref 10;       (*max number of goals to print -- set by user*)
    63 val show_hyps = ref true;       (*false: print meta-hypotheses as dots*)
    64 val show_tags = ref false;      (*false: suppress tags*)
    65 
    66 fun pretty_tag (name, args) = Pretty.strs (name :: map quote args);
    67 val pretty_tags = Pretty.list "[" "]" o map pretty_tag;
    68 
    69 fun pretty_thm_aux (pretty_sort, pretty_term) quote th =
    70   let
    71     val {hyps, prop, der = (ora, _), ...} = rep_thm th;
    72     val xshyps = Thm.extra_shyps th;
    73     val (_, tags) = Thm.get_name_tags th;
    74 
    75     val prt_term = (if quote then Pretty.quote else I) o pretty_term;
    76 
    77     val hlen = length xshyps + length hyps;
    78     val hsymbs =
    79       if hlen = 0 andalso not ora then []
    80       else if ! show_hyps then
    81         [Pretty.brk 2, Pretty.list "[" "]"
    82           (map prt_term hyps @ map pretty_sort xshyps @
    83             (if ora then [Pretty.str "!"] else []))]
    84       else [Pretty.brk 2, Pretty.str ("[" ^ implode (replicate hlen ".") ^
    85         (if ora then "!" else "") ^ "]")];
    86     val tsymbs =
    87       if null tags orelse not (! show_tags) then []
    88       else [Pretty.brk 1, pretty_tags tags];
    89   in Pretty.block (prt_term prop :: (hsymbs @ tsymbs)) end;
    90 
    91 fun gen_pretty_thm quote th =
    92   let val sg = Thm.sign_of_thm th
    93   in pretty_thm_aux (Sign.pretty_sort sg, Sign.pretty_term sg) quote th end;
    94 
    95 val pretty_thm = gen_pretty_thm true;
    96 val pretty_thm_no_quote = gen_pretty_thm false;
    97 
    98 
    99 val string_of_thm = Pretty.string_of o pretty_thm;
   100 val pprint_thm = Pretty.pprint o pretty_thm;
   101 
   102 fun pretty_thms [th] = pretty_thm th
   103   | pretty_thms ths = Pretty.block (Pretty.fbreaks (map pretty_thm ths));
   104 
   105 val pretty_thm_sg = pretty_thm oo Thm.transfer_sg;
   106 val pretty_thms_sg = pretty_thms oo (map o Thm.transfer_sg);
   107 
   108 
   109 (* top-level commands for printing theorems *)
   110 
   111 val print_thm = Pretty.writeln o pretty_thm;
   112 val print_thms = Pretty.writeln o pretty_thms;
   113 
   114 fun prth th = (print_thm th; th);
   115 
   116 (*Print and return a sequence of theorems, separated by blank lines. *)
   117 fun prthq thseq =
   118   (Seq.print (fn _ => print_thm) 100000 thseq; thseq);
   119 
   120 (*Print and return a list of theorems, separated by blank lines. *)
   121 fun prths ths = (seq (fn th => (print_thm th; writeln "")) ths; ths);
   122 
   123 
   124 (* other printing commands *)
   125 
   126 fun pretty_ctyp cT =
   127   let val {sign, T} = rep_ctyp cT in Sign.pretty_typ sign T end;
   128 
   129 fun pprint_ctyp cT =
   130   let val {sign, T} = rep_ctyp cT in Sign.pprint_typ sign T end;
   131 
   132 fun string_of_ctyp cT =
   133   let val {sign, T} = rep_ctyp cT in Sign.string_of_typ sign T end;
   134 
   135 val print_ctyp = writeln o string_of_ctyp;
   136 
   137 fun pretty_cterm ct =
   138   let val {sign, t, ...} = rep_cterm ct in Sign.pretty_term sign t end;
   139 
   140 fun pprint_cterm ct =
   141   let val {sign, t, ...} = rep_cterm ct in Sign.pprint_term sign t end;
   142 
   143 fun string_of_cterm ct =
   144   let val {sign, t, ...} = rep_cterm ct in Sign.string_of_term sign t end;
   145 
   146 val print_cterm = writeln o string_of_cterm;
   147 
   148 
   149 
   150 (** print theory **)
   151 
   152 val pretty_theory = Sign.pretty_sg o Theory.sign_of;
   153 val pprint_theory = Sign.pprint_sg o Theory.sign_of;
   154 
   155 val print_syntax = Syntax.print_syntax o Theory.syn_of;
   156 
   157 
   158 (* pretty_name_space  *)
   159 
   160 fun pretty_name_space (kind, space) =
   161   let
   162     fun prt_entry (name, accs) = Pretty.block
   163       (Pretty.str (quote name ^ " =") :: Pretty.brk 1 ::
   164         Pretty.commas (map (Pretty.str o quote) accs));
   165   in
   166     Pretty.fbreaks (Pretty.str (kind ^ ":") :: map prt_entry (NameSpace.dest space))
   167     |> Pretty.block
   168   end;
   169 
   170 
   171 (* pretty_full_theory *)
   172 
   173 fun pretty_full_theory thy =
   174   let
   175     val sg = Theory.sign_of thy;
   176 
   177     fun prt_cls c = Sign.pretty_sort sg [c];
   178     fun prt_sort S = Sign.pretty_sort sg S;
   179     fun prt_arity t (c, Ss) = Sign.pretty_arity sg (t, Ss, [c]);
   180     fun prt_typ_no_tvars ty = Pretty.quote (Sign.pretty_typ sg (#1 (Type.freeze_thaw_type ty)));
   181     fun prt_term t = Pretty.quote (Sign.pretty_term sg t);
   182 
   183     fun pretty_classes cs = Pretty.block
   184       (Pretty.breaks (Pretty.str "classes:" :: map prt_cls cs));
   185 
   186     fun pretty_classrel (c, cs) = Pretty.block
   187       (prt_cls c :: Pretty.str " <" :: Pretty.brk 1 ::
   188         Pretty.commas (map prt_cls cs));
   189 
   190     fun pretty_default S = Pretty.block
   191       [Pretty.str "default:", Pretty.brk 1, prt_sort S];
   192 
   193     fun pretty_ty (t, n) = Pretty.block
   194       [Pretty.str t, Pretty.brk 1, Pretty.str (string_of_int n)];
   195 
   196     fun pretty_log_types ts = Pretty.block
   197       (Pretty.breaks (Pretty.str "logical types:" :: map Pretty.str ts));
   198 
   199     fun pretty_witness None = Pretty.str "universal non-emptiness witness: --"
   200       | pretty_witness (Some (T, S)) = Pretty.block
   201           [Pretty.str "universal non-emptiness witness:", Pretty.brk 1, prt_typ_no_tvars T,
   202             Pretty.brk 1, prt_sort S];
   203 
   204     fun pretty_abbr (t, (vs, rhs)) = Pretty.block
   205       [prt_typ_no_tvars (Type (t, map (fn v => TVar ((v, 0), [])) vs)),
   206         Pretty.str " =", Pretty.brk 1, prt_typ_no_tvars rhs];
   207 
   208     fun pretty_arities (t, ars) = map (prt_arity t) ars;
   209 
   210     fun pretty_const (c, ty) = Pretty.block
   211       [Pretty.str c, Pretty.str " ::", Pretty.brk 1, prt_typ_no_tvars ty];
   212 
   213     fun prt_axm (a, t) = Pretty.block [Pretty.str (a ^ ":"), Pretty.brk 1, prt_term t];
   214 
   215 
   216     val {self = _, tsig, const_tab, syn = _, path, spaces, data} = Sign.rep_sg sg;
   217     val {axioms, oracles, ...} = Theory.rep_theory thy;
   218     val spaces' = Library.sort_wrt fst spaces;
   219     val {classes, classrel, default, tycons = type_tab, log_types, univ_witness, abbrs, arities} =
   220       Type.rep_tsig tsig;
   221     val tycons = Sign.cond_extern_table sg Sign.typeK type_tab;
   222     val consts = Sign.cond_extern_table sg Sign.constK const_tab;
   223     val axms = Sign.cond_extern_table sg Theory.axiomK axioms;
   224     val oras = Sign.cond_extern_table sg Theory.oracleK oracles;
   225   in
   226     [Pretty.strs ("stamps:" :: Sign.stamp_names_of sg),
   227       Pretty.strs ("data:" :: Sign.data_kinds data),
   228       Pretty.strs ["name prefix:", NameSpace.pack (if_none path ["-"])],
   229       Pretty.big_list "name spaces:" (map pretty_name_space spaces'),
   230       pretty_classes classes,
   231       Pretty.big_list "class relation:" (map pretty_classrel (Symtab.dest classrel)),
   232       pretty_default default,
   233       pretty_log_types log_types,
   234       pretty_witness univ_witness,
   235       Pretty.big_list "type constructors:" (map pretty_ty tycons),
   236       Pretty.big_list "type abbreviations:" (map pretty_abbr (Symtab.dest abbrs)),
   237       Pretty.big_list "type arities:" (flat (map pretty_arities (Symtab.dest arities))),
   238       Pretty.big_list "consts:" (map pretty_const consts),
   239       Pretty.big_list "axioms:" (map prt_axm axms),
   240       Pretty.strs ("oracles:" :: (map #1 oras))]
   241   end;
   242 
   243 
   244 
   245 (** print_goals **)
   246 
   247 (* print_goals etc. *)
   248 
   249 (*show consts with types in proof state output?*)
   250 val show_consts = ref false;
   251 
   252 
   253 (*print thm A1,...,An/B in "goal style" -- premises as numbered subgoals*)
   254 
   255 local
   256 
   257 fun ins_entry (x, y) [] = [(x, [y])]
   258   | ins_entry (x, y) ((pair as (x', ys')) :: pairs) =
   259       if x = x' then (x', y ins ys') :: pairs
   260       else pair :: ins_entry (x, y) pairs;
   261 
   262 fun add_consts (Const (c, T), env) = ins_entry (T, (c, T)) env
   263   | add_consts (t $ u, env) = add_consts (u, add_consts (t, env))
   264   | add_consts (Abs (_, _, t), env) = add_consts (t, env)
   265   | add_consts (_, env) = env;
   266 
   267 fun add_vars (Free (x, T), env) = ins_entry (T, (x, ~1)) env
   268   | add_vars (Var (xi, T), env) = ins_entry (T, xi) env
   269   | add_vars (Abs (_, _, t), env) = add_vars (t, env)
   270   | add_vars (t $ u, env) = add_vars (u, add_vars (t, env))
   271   | add_vars (_, env) = env;
   272 
   273 fun add_varsT (Type (_, Ts), env) = foldr add_varsT (Ts, env)
   274   | add_varsT (TFree (x, S), env) = ins_entry (S, (x, ~1)) env
   275   | add_varsT (TVar (xi, S), env) = ins_entry (S, xi) env;
   276 
   277 fun sort_idxs vs = map (apsnd (sort (prod_ord string_ord int_ord))) vs;
   278 fun sort_cnsts cs = map (apsnd (sort_wrt fst)) cs;
   279 
   280 fun consts_of t = sort_cnsts (add_consts (t, []));
   281 fun vars_of t = sort_idxs (add_vars (t, []));
   282 fun varsT_of t = rev (sort_idxs (it_term_types add_varsT (t, [])));
   283 
   284 in
   285 
   286 fun pretty_goals_aux (prt_sort, prt_typ, prt_term) begin_goal (msg, main) maxgoals state =
   287   let
   288     fun prt_atoms prt prtT (X, xs) = Pretty.block
   289       [Pretty.block (Pretty.commas (map prt xs)), Pretty.str " ::",
   290         Pretty.brk 1, prtT X];
   291 
   292     fun prt_var (x, ~1) = prt_term (Syntax.free x)
   293       | prt_var xi = prt_term (Syntax.var xi);
   294 
   295     fun prt_varT (x, ~1) = prt_typ (TFree (x, []))
   296       | prt_varT xi = prt_typ (TVar (xi, []));
   297 
   298     val prt_consts = prt_atoms (prt_term o Const) prt_typ;
   299     val prt_vars = prt_atoms prt_var prt_typ;
   300     val prt_varsT = prt_atoms prt_varT prt_sort;
   301 
   302 
   303     fun pretty_list _ _ [] = []
   304       | pretty_list name prt lst = [Pretty.big_list name (map prt lst)];
   305 
   306     fun pretty_subgoal (n, A) =
   307       Pretty.blk (0, [Pretty.str (begin_goal ^ " " ^ string_of_int n ^ ". "), prt_term A]);
   308     fun pretty_subgoals As = map pretty_subgoal (1 upto length As ~~ As);
   309 
   310     val pretty_ffpairs = pretty_list "flex-flex pairs:" (prt_term o Logic.mk_flexpair);
   311 
   312     val pretty_consts = pretty_list "constants:" prt_consts o consts_of;
   313     val pretty_vars = pretty_list "variables:" prt_vars o vars_of;
   314     val pretty_varsT = pretty_list "type variables:" prt_varsT o varsT_of;
   315 
   316 
   317     val {prop, ...} = rep_thm state;
   318     val (tpairs, As, B) = Logic.strip_horn prop;
   319     val ngoals = length As;
   320 
   321     fun pretty_gs (types, sorts) =
   322       (if main then [prt_term B] else []) @
   323        (if ngoals = 0 then [Pretty.str "No subgoals!"]
   324         else if ngoals > maxgoals then
   325           pretty_subgoals (take (maxgoals, As)) @
   326           (if msg then [Pretty.str ("A total of " ^ string_of_int ngoals ^ " subgoals...")]
   327            else [])
   328         else pretty_subgoals As) @
   329       pretty_ffpairs tpairs @
   330       (if ! show_consts then pretty_consts prop else []) @
   331       (if types then pretty_vars prop else []) @
   332       (if sorts then pretty_varsT prop else []);
   333   in
   334     setmp show_no_free_types true
   335       (setmp show_types (! show_types orelse ! show_sorts)
   336         (setmp show_sorts false pretty_gs))
   337    (! show_types orelse ! show_sorts, ! show_sorts)
   338   end;
   339 
   340 fun pretty_goals_marker bg n th =
   341   let val sg = Thm.sign_of_thm th in
   342     pretty_goals_aux (Sign.pretty_sort sg, Sign.pretty_typ sg, Sign.pretty_term sg)
   343       bg (true, true) n th
   344   end;
   345 
   346 val pretty_goals = pretty_goals_marker "";
   347 val print_goals = (Pretty.writeln o Pretty.chunks) oo pretty_goals_marker "";
   348 
   349 end;
   350 
   351 
   352 (* print_current_goals *)
   353 
   354 val current_goals_markers = ref ("", "", "");
   355 
   356 fun pretty_current_goals n m th =
   357   let
   358     val ref (begin_state, end_state, begin_goal) = current_goals_markers;
   359     val ngoals = nprems_of th;
   360   in
   361     (if begin_state = "" then [] else [Pretty.str begin_state]) @
   362     [Pretty.str ("Level " ^ string_of_int n ^
   363       (if ngoals > 0 then " (" ^ string_of_int ngoals ^ " subgoal" ^
   364         (if ngoals <> 1 then "s" else "") ^ ")"
   365       else ""))] @
   366     pretty_goals_marker begin_goal m th @
   367     (if end_state = "" then [] else [Pretty.str end_state])
   368   end;
   369 
   370 fun print_current_goals_default n m th =
   371   Pretty.writeln (Pretty.chunks (pretty_current_goals n m th));
   372 
   373 val print_current_goals_fn = ref print_current_goals_default;
   374 
   375 end;
   376 
   377 structure BasicDisplay: BASIC_DISPLAY = Display;
   378 open BasicDisplay;