src/Pure/Isar/proof_display.ML
author wenzelm
Tue Oct 09 00:20:13 2007 +0200 (2007-10-09)
changeset 24920 2a45e400fdad
parent 22872 d7189dc8939c
child 26336 a0e2b706ce73
permissions -rw-r--r--
generic Syntax.pretty/string_of operations;
     1 (*  Title:      Pure/Isar/proof_display.ML
     2     ID:         $Id$
     3     Author:     Makarius
     4 
     5 Printing of theorems, goals, results etc.
     6 *)
     7 
     8 signature BASIC_PROOF_DISPLAY =
     9 sig
    10   val print_theorems: theory -> unit
    11   val print_theory: theory -> unit
    12 end
    13 
    14 signature PROOF_DISPLAY =
    15 sig
    16   include BASIC_PROOF_DISPLAY
    17   val pprint_context: Proof.context -> pprint_args -> unit
    18   val pprint_typ: theory -> typ -> pprint_args -> unit
    19   val pprint_term: theory -> term -> pprint_args -> unit
    20   val pprint_ctyp: ctyp -> pprint_args -> unit
    21   val pprint_cterm: cterm -> pprint_args -> unit
    22   val pprint_thm: thm -> pprint_args -> unit
    23   val print_theorems_diff: theory -> theory -> unit
    24   val pretty_full_theory: bool -> theory -> Pretty.T
    25   val string_of_rule: Proof.context -> string -> thm -> string
    26   val print_results: bool -> Proof.context ->
    27     ((string * string) * (string * thm list) list) -> unit
    28   val present_results: Proof.context ->
    29     ((string * string) * (string * thm list) list) -> unit
    30   val pretty_consts: Proof.context ->
    31     (string * typ -> bool) -> (string * typ) list -> Pretty.T
    32 end
    33 
    34 structure ProofDisplay: PROOF_DISPLAY =
    35 struct
    36 
    37 (* toplevel pretty printing *)
    38 
    39 fun pprint_context ctxt = Pretty.pprint
    40  (if ! ProofContext.debug then
    41     Pretty.quote (Pretty.big_list "proof context:" (ProofContext.pretty_context ctxt))
    42   else Pretty.str "<context>");
    43 
    44 fun pprint pretty thy = Pretty.pprint o Pretty.quote o pretty (ProofContext.init thy);
    45 
    46 val pprint_typ = pprint Syntax.pretty_typ;
    47 val pprint_term = pprint Syntax.pretty_term;
    48 fun pprint_ctyp cT = pprint_typ (Thm.theory_of_ctyp cT) (Thm.typ_of cT);
    49 fun pprint_cterm ct = pprint_term (Thm.theory_of_cterm ct) (Thm.term_of ct);
    50 val pprint_thm = Pretty.pprint o ProofContext.pretty_thm_legacy;
    51 
    52 
    53 (* theorems and theory *)
    54 
    55 fun pretty_theorems_diff prev_thms thy =
    56   let
    57     val ctxt = ProofContext.init thy;
    58     val (space, thms) = PureThy.theorems_of thy;
    59     val diff_thmss = Symtab.fold (fn fact =>
    60       if not (Symtab.member Thm.eq_thms prev_thms fact) then cons fact else I) thms [];
    61     val thmss = diff_thmss |> map (apfst (NameSpace.extern space)) |> Library.sort_wrt #1;
    62   in Pretty.big_list "theorems:" (map (ProofContext.pretty_fact ctxt) thmss) end;
    63 
    64 fun print_theorems_diff prev_thy thy =
    65   Pretty.writeln (pretty_theorems_diff (#2 (PureThy.theorems_of prev_thy)) thy);
    66 
    67 fun pretty_theorems thy = pretty_theorems_diff Symtab.empty thy;
    68 
    69 val print_theorems = Pretty.writeln o pretty_theorems;
    70 
    71 fun pretty_full_theory verbose thy =
    72   Pretty.chunks (Display.pretty_full_theory verbose thy @ [pretty_theorems thy]);
    73 
    74 val print_theory = Pretty.writeln o pretty_full_theory false;
    75 
    76 
    77 (* refinement rule *)
    78 
    79 fun pretty_rule ctxt s thm =
    80   Pretty.block [Pretty.str (s ^ " attempt to solve goal by exported rule:"),
    81     Pretty.fbrk, ProofContext.pretty_thm ctxt thm];
    82 
    83 val string_of_rule = Pretty.string_of ooo pretty_rule;
    84 
    85 
    86 (* results *)
    87 
    88 local
    89 
    90 fun pretty_facts ctxt =
    91   flat o (separate [Pretty.fbrk, Pretty.str "and "]) o
    92     map (single o ProofContext.pretty_fact ctxt);
    93 
    94 fun pretty_results ctxt ((kind, ""), facts) =
    95       Pretty.block (Pretty.str kind :: Pretty.brk 1 :: pretty_facts ctxt facts)
    96   | pretty_results ctxt ((kind, name), [fact]) = Pretty.blk (1,
    97       [Pretty.str (kind ^ " " ^ name ^ ":"), Pretty.fbrk, ProofContext.pretty_fact ctxt fact])
    98   | pretty_results ctxt ((kind, name), facts) = Pretty.blk (1,
    99       [Pretty.str (kind ^ " " ^ name ^ ":"), Pretty.fbrk,
   100         Pretty.blk (1, Pretty.str "(" :: pretty_facts ctxt facts @ [Pretty.str ")"])]);
   101 
   102 fun name_results "" res = res
   103   | name_results name res =
   104       let
   105         val n = length (maps snd res);
   106         fun name_res (a, ths) i =
   107           let
   108             val m = length ths;
   109             val j = i + m;
   110           in
   111             if a <> "" then ((a, ths), j)
   112             else if m = n then ((name, ths), j)
   113             else if m = 1 then
   114               ((PureThy.string_of_thmref (NameSelection (name, [Single i])), ths), j)
   115             else ((PureThy.string_of_thmref (NameSelection (name, [FromTo (i, j - 1)])), ths), j)
   116           end;
   117       in fst (fold_map name_res res 1) end;
   118 
   119 in
   120 
   121 fun print_results true = Pretty.writeln oo pretty_results
   122   | print_results false = K (K ());
   123 
   124 fun present_results ctxt ((kind, name), res) =
   125   if kind = "" orelse kind = Thm.internalK then ()
   126   else (print_results true ctxt ((kind, name), res);
   127     ML_Context.setmp (SOME (Context.Proof ctxt))
   128       (Present.results kind) (name_results name res));
   129 
   130 end;
   131 
   132 
   133 (* consts *)
   134 
   135 local
   136 
   137 fun pretty_var ctxt (x, T) =
   138   Pretty.block [Pretty.str x, Pretty.str " ::", Pretty.brk 1,
   139     Pretty.quote (Syntax.pretty_typ ctxt T)];
   140 
   141 fun pretty_vars ctxt kind vs = Pretty.big_list kind (map (pretty_var ctxt) vs);
   142 
   143 in
   144 
   145 fun pretty_consts ctxt pred cs =
   146   (case filter pred (#1 (ProofContext.inferred_fixes ctxt)) of
   147     [] => pretty_vars ctxt "constants" cs
   148   | ps => Pretty.chunks [pretty_vars ctxt "parameters" ps, pretty_vars ctxt "constants" cs]);
   149 
   150 end;
   151 
   152 end;
   153 
   154 structure BasicProofDisplay: BASIC_PROOF_DISPLAY = ProofDisplay;
   155 open BasicProofDisplay;