src/Pure/Thy/thy_output.ML
author wenzelm
Mon Feb 23 14:50:30 2015 +0100 (2015-02-23)
changeset 59564 fdc03c8daacc
parent 59175 bf465f335e85
child 59809 87641097d0f3
permissions -rw-r--r--
Goal.prove_multi is superseded by the fully general Goal.prove_common;
     1 (*  Title:      Pure/Thy/thy_output.ML
     2     Author:     Markus Wenzel, TU Muenchen
     3 
     4 Theory document output with antiquotations.
     5 *)
     6 
     7 signature THY_OUTPUT =
     8 sig
     9   val display: bool Config.T
    10   val quotes: bool Config.T
    11   val margin: int Config.T
    12   val indent: int Config.T
    13   val source: bool Config.T
    14   val break: bool Config.T
    15   val modes: string Config.T
    16   val add_wrapper: ((unit -> string) -> unit -> string) -> Proof.context -> Proof.context
    17   val add_option: binding -> (string -> Proof.context -> Proof.context) -> theory -> theory
    18   val check_command: Proof.context -> xstring * Position.T -> string
    19   val check_option: Proof.context -> xstring * Position.T -> string
    20   val print_antiquotations: Proof.context -> unit
    21   val antiquotation: binding -> 'a context_parser ->
    22     ({source: Token.src, state: Toplevel.state, context: Proof.context} -> 'a -> string) ->
    23       theory -> theory
    24   val boolean: string -> bool
    25   val integer: string -> int
    26   val eval_antiq: Toplevel.state -> Antiquote.antiq -> string
    27   val check_text: Input.source -> Toplevel.state -> unit
    28   val present_thy: theory -> (Toplevel.transition * Toplevel.state) list -> Token.T list -> Buffer.T
    29   val pretty_text: Proof.context -> string -> Pretty.T
    30   val pretty_term: Proof.context -> term -> Pretty.T
    31   val pretty_thm: Proof.context -> thm -> Pretty.T
    32   val str_of_source: Token.src -> string
    33   val maybe_pretty_source: (Proof.context -> 'a -> Pretty.T) -> Proof.context ->
    34     Token.src -> 'a list -> Pretty.T list
    35   val string_of_margin: Proof.context -> Pretty.T -> string
    36   val output: Proof.context -> Pretty.T list -> string
    37   val verbatim_text: Proof.context -> string -> string
    38   val old_header_command: Input.source -> Toplevel.transition -> Toplevel.transition
    39   val document_command: (xstring * Position.T) option * Input.source ->
    40     Toplevel.transition -> Toplevel.transition
    41 end;
    42 
    43 structure Thy_Output: THY_OUTPUT =
    44 struct
    45 
    46 (** options **)
    47 
    48 val display = Attrib.setup_option_bool ("thy_output_display", @{here});
    49 val break = Attrib.setup_option_bool ("thy_output_break", @{here});
    50 val quotes = Attrib.setup_option_bool ("thy_output_quotes", @{here});
    51 val margin = Attrib.setup_option_int ("thy_output_margin", @{here});
    52 val indent = Attrib.setup_option_int ("thy_output_indent", @{here});
    53 val source = Attrib.setup_option_bool ("thy_output_source", @{here});
    54 val modes = Attrib.setup_option_string ("thy_output_modes", @{here});
    55 
    56 
    57 structure Wrappers = Proof_Data
    58 (
    59   type T = ((unit -> string) -> unit -> string) list;
    60   fun init _ = [];
    61 );
    62 
    63 fun add_wrapper wrapper = Wrappers.map (cons wrapper);
    64 
    65 val wrap = Wrappers.get #> fold (fn wrapper => fn f => wrapper f);
    66 
    67 
    68 
    69 (** maintain global antiquotations **)
    70 
    71 structure Antiquotations = Theory_Data
    72 (
    73   type T =
    74     (Token.src -> Toplevel.state -> Proof.context -> string) Name_Space.table *
    75       (string -> Proof.context -> Proof.context) Name_Space.table;
    76   val empty : T =
    77     (Name_Space.empty_table Markup.document_antiquotationN,
    78       Name_Space.empty_table Markup.document_antiquotation_optionN);
    79   val extend = I;
    80   fun merge ((commands1, options1), (commands2, options2)) : T =
    81     (Name_Space.merge_tables (commands1, commands2),
    82       Name_Space.merge_tables (options1, options2));
    83 );
    84 
    85 val get_antiquotations = Antiquotations.get o Proof_Context.theory_of;
    86 
    87 fun add_command name cmd thy = thy
    88   |> Antiquotations.map (apfst (Name_Space.define (Context.Theory thy) true (name, cmd) #> snd));
    89 
    90 fun add_option name opt thy = thy
    91   |> Antiquotations.map (apsnd (Name_Space.define (Context.Theory thy) true (name, opt) #> snd));
    92 
    93 fun check_command ctxt = #1 o Name_Space.check (Context.Proof ctxt) (#1 (get_antiquotations ctxt));
    94 
    95 fun check_option ctxt = #1 o Name_Space.check (Context.Proof ctxt) (#2 (get_antiquotations ctxt));
    96 
    97 fun command src state ctxt =
    98   let val (src', f) = Token.check_src ctxt (#1 (get_antiquotations ctxt)) src
    99   in f src' state ctxt end;
   100 
   101 fun option ((xname, pos), s) ctxt =
   102   let
   103     val (_, opt) =
   104       Name_Space.check (Context.Proof ctxt) (#2 (get_antiquotations ctxt)) (xname, pos);
   105   in opt s ctxt end;
   106 
   107 fun print_antiquotations ctxt =
   108   let
   109     val (commands, options) = get_antiquotations ctxt;
   110     val command_names = map #1 (Name_Space.markup_table ctxt commands);
   111     val option_names = map #1 (Name_Space.markup_table ctxt options);
   112   in
   113     [Pretty.big_list "document antiquotations:" (map Pretty.mark_str command_names),
   114      Pretty.big_list "document antiquotation options:" (map Pretty.mark_str option_names)]
   115   end |> Pretty.writeln_chunks;
   116 
   117 fun antiquotation name scan body =
   118   add_command name
   119     (fn src => fn state => fn ctxt =>
   120       let val (x, ctxt') = Token.syntax scan src ctxt
   121       in body {source = src, state = state, context = ctxt'} x end);
   122 
   123 
   124 
   125 (** syntax of antiquotations **)
   126 
   127 (* option values *)
   128 
   129 fun boolean "" = true
   130   | boolean "true" = true
   131   | boolean "false" = false
   132   | boolean s = error ("Bad boolean value: " ^ quote s);
   133 
   134 fun integer s =
   135   let
   136     fun int ss =
   137       (case Library.read_int ss of (i, []) => i
   138       | _ => error ("Bad integer value: " ^ quote s));
   139   in (case Symbol.explode s of "-" :: ss => ~ (int ss) | ss => int ss) end;
   140 
   141 
   142 (* outer syntax *)
   143 
   144 local
   145 
   146 val property =
   147   Parse.position Parse.xname -- Scan.optional (Parse.$$$ "=" |-- Parse.!!! Parse.xname) "";
   148 
   149 val properties =
   150   Scan.optional (Parse.$$$ "[" |-- Parse.!!! (Parse.enum "," property --| Parse.$$$ "]")) [];
   151 
   152 in
   153 
   154 val antiq =
   155   Parse.!!!
   156     (Parse.position Parse.liberal_name -- properties -- Parse.args --| Scan.ahead Parse.eof)
   157   >> (fn ((name, props), args) => (props, Token.src name args));
   158 
   159 end;
   160 
   161 
   162 (* eval_antiq *)
   163 
   164 fun eval_antiq state ((ss, {range = (pos, _), ...}): Antiquote.antiq) =
   165   let
   166     val keywords =
   167       (case try Toplevel.presentation_context_of state of
   168         SOME ctxt => Thy_Header.get_keywords' ctxt
   169       | NONE =>
   170           error ("Unknown context -- cannot expand document antiquotations" ^
   171             Position.here pos));
   172 
   173     val (opts, src) = Token.read_antiq keywords antiq (ss, pos);
   174     fun cmd ctxt = wrap ctxt (fn () => command src state ctxt) ();
   175 
   176     val preview_ctxt = fold option opts (Toplevel.presentation_context_of state);
   177     val print_ctxt = Context_Position.set_visible false preview_ctxt;
   178     val _ = cmd preview_ctxt;
   179     val print_modes = space_explode "," (Config.get print_ctxt modes) @ Latex.modes;
   180   in Print_Mode.with_modes print_modes (fn () => cmd print_ctxt) () end;
   181 
   182 
   183 (* check_text *)
   184 
   185 fun eval_antiquote state source =
   186   let
   187     fun words (Antiquote.Text ss) = [(#1 (Symbol_Pos.range ss), Markup.words)]
   188       | words (Antiquote.Antiq _) = [];
   189 
   190     fun expand (Antiquote.Text ss) = Symbol_Pos.content ss
   191       | expand (Antiquote.Antiq antiq) = eval_antiq state antiq;
   192 
   193     val ants = Antiquote.read source;
   194     val _ = Position.reports (maps words ants);
   195   in implode (map expand ants) end;
   196 
   197 fun check_text source state =
   198  (Position.report (Input.pos_of source) (Markup.language_document (Input.is_delimited source));
   199   if Toplevel.is_skipped_proof state then ()
   200   else ignore (eval_antiquote state source));
   201 
   202 
   203 
   204 (** present theory source **)
   205 
   206 (*NB: arranging white space around command spans is a black art.*)
   207 
   208 (* presentation tokens *)
   209 
   210 datatype token =
   211     No_Token
   212   | Basic_Token of Token.T
   213   | Markup_Token of string * Input.source
   214   | Markup_Env_Token of string * Input.source
   215   | Verbatim_Token of Input.source;
   216 
   217 fun output_token state =
   218   let val eval = eval_antiquote state in
   219     fn No_Token => ""
   220      | Basic_Token tok => Latex.output_basic tok
   221      | Markup_Token (cmd, source) => Latex.output_markup cmd (eval source)
   222      | Markup_Env_Token (cmd, source) => Latex.output_markup_env cmd (eval source)
   223      | Verbatim_Token source => Latex.output_verbatim (eval source)
   224   end;
   225 
   226 fun basic_token pred (Basic_Token tok) = pred tok
   227   | basic_token _ _ = false;
   228 
   229 val improper_token = basic_token Token.is_improper;
   230 val comment_token = basic_token Token.is_comment;
   231 val blank_token = basic_token Token.is_blank;
   232 val newline_token = basic_token Token.is_newline;
   233 
   234 
   235 (* command spans *)
   236 
   237 type command = string * Position.T * string list;   (*name, position, tags*)
   238 type source = (token * (string * int)) list;        (*token, markup flag, meta-comment depth*)
   239 
   240 datatype span = Span of command * (source * source * source * source) * bool;
   241 
   242 fun make_span cmd src =
   243   let
   244     fun take_newline (tok :: toks) =
   245           if newline_token (fst tok) then ([tok], toks, true)
   246           else ([], tok :: toks, false)
   247       | take_newline [] = ([], [], false);
   248     val (((src_prefix, src_main), src_suffix1), (src_suffix2, src_appendix, newline)) =
   249       src
   250       |> take_prefix (improper_token o fst)
   251       ||>> take_suffix (improper_token o fst)
   252       ||>> take_prefix (comment_token o fst)
   253       ||> take_newline;
   254   in Span (cmd, (src_prefix, src_main, src_suffix1 @ src_suffix2, src_appendix), newline) end;
   255 
   256 
   257 (* present spans *)
   258 
   259 local
   260 
   261 fun err_bad_nesting pos =
   262   error ("Bad nesting of commands in presentation" ^ pos);
   263 
   264 fun edge which f (x: string option, y) =
   265   if x = y then I
   266   else (case which (x, y) of NONE => I | SOME txt => Buffer.add (f txt));
   267 
   268 val begin_tag = edge #2 Latex.begin_tag;
   269 val end_tag = edge #1 Latex.end_tag;
   270 fun open_delim delim e = edge #2 Latex.begin_delim e #> delim #> edge #2 Latex.end_delim e;
   271 fun close_delim delim e = edge #1 Latex.begin_delim e #> delim #> edge #1 Latex.end_delim e;
   272 
   273 in
   274 
   275 fun present_span keywords span state state' (tag_stack, active_tag, newline, buffer, present_cont) =
   276   let
   277     val present = fold (fn (tok, (flag, 0)) =>
   278         Buffer.add (output_token state' tok)
   279         #> Buffer.add flag
   280       | _ => I);
   281 
   282     val Span ((cmd_name, cmd_pos, cmd_tags), srcs, span_newline) = span;
   283 
   284     val (tag, tags) = tag_stack;
   285     val tag' = try hd (fold (update (op =)) cmd_tags (the_list tag));
   286 
   287     val nesting = Toplevel.level state' - Toplevel.level state;
   288 
   289     val active_tag' =
   290       if is_some tag' then tag'
   291       else if cmd_name = "end" andalso not (Toplevel.is_toplevel state') then NONE
   292       else
   293         (case Keyword.command_tags keywords cmd_name of
   294           default_tag :: _ => SOME default_tag
   295         | [] =>
   296             if Keyword.is_vacuous keywords cmd_name andalso Toplevel.is_proof state
   297             then active_tag
   298             else NONE);
   299 
   300     val edge = (active_tag, active_tag');
   301 
   302     val newline' =
   303       if is_none active_tag' then span_newline else newline;
   304 
   305     val tag_stack' =
   306       if nesting = 0 andalso not (Toplevel.is_proof state) then tag_stack
   307       else if nesting >= 0 then (tag', replicate nesting tag @ tags)
   308       else
   309         (case drop (~ nesting - 1) tags of
   310           tg :: tgs => (tg, tgs)
   311         | [] => err_bad_nesting (Position.here cmd_pos));
   312 
   313     val buffer' =
   314       buffer
   315       |> end_tag edge
   316       |> close_delim (fst present_cont) edge
   317       |> snd present_cont
   318       |> open_delim (present (#1 srcs)) edge
   319       |> begin_tag edge
   320       |> present (#2 srcs);
   321     val present_cont' =
   322       if newline then (present (#3 srcs), present (#4 srcs))
   323       else (I, present (#3 srcs) #> present (#4 srcs));
   324   in (tag_stack', active_tag', newline', buffer', present_cont') end;
   325 
   326 fun present_trailer ((_, tags), active_tag, _, buffer, present_cont) =
   327   if not (null tags) then err_bad_nesting " at end of theory"
   328   else
   329     buffer
   330     |> end_tag (active_tag, NONE)
   331     |> close_delim (fst present_cont) (active_tag, NONE)
   332     |> snd present_cont;
   333 
   334 end;
   335 
   336 
   337 (* present_thy *)
   338 
   339 local
   340 
   341 val space_proper =
   342   Scan.one Token.is_blank -- Scan.many Token.is_comment -- Scan.one Token.is_proper;
   343 
   344 val is_improper = not o (Token.is_proper orf Token.is_begin_ignore orf Token.is_end_ignore);
   345 val improper = Scan.many is_improper;
   346 val improper_end = Scan.repeat (Scan.unless space_proper (Scan.one is_improper));
   347 val blank_end = Scan.repeat (Scan.unless space_proper (Scan.one Token.is_blank));
   348 
   349 val opt_newline = Scan.option (Scan.one Token.is_newline);
   350 
   351 val ignore =
   352   Scan.depend (fn d => opt_newline |-- Scan.one Token.is_begin_ignore
   353     >> pair (d + 1)) ||
   354   Scan.depend (fn d => Scan.one Token.is_end_ignore --|
   355     (if d = 0 then Scan.fail_with (K (fn () => "Bad nesting of meta-comments")) else opt_newline)
   356     >> pair (d - 1));
   357 
   358 val tag = (improper -- Parse.$$$ "%" -- improper) |-- Parse.!!! (Parse.tag_name --| blank_end);
   359 
   360 val locale =
   361   Scan.option ((Parse.$$$ "(" -- improper -- Parse.$$$ "in") |--
   362     Parse.!!! (improper |-- Parse.xname --| (improper -- Parse.$$$ ")")));
   363 
   364 in
   365 
   366 fun present_thy thy command_results toks =
   367   let
   368     val keywords = Thy_Header.get_keywords thy;
   369 
   370 
   371     (* tokens *)
   372 
   373     val ignored = Scan.state --| ignore
   374       >> (fn d => (NONE, (No_Token, ("", d))));
   375 
   376     fun markup pred mk flag = Scan.peek (fn d =>
   377       improper |--
   378         Parse.position (Scan.one (fn tok =>
   379           Token.is_command tok andalso pred keywords (Token.content_of tok))) --
   380       Scan.repeat tag --
   381       Parse.!!!! ((improper -- locale -- improper) |-- Parse.document_source --| improper_end)
   382       >> (fn (((tok, pos'), tags), source) =>
   383         let val name = Token.content_of tok
   384         in (SOME (name, pos', tags), (mk (name, source), (flag, d))) end));
   385 
   386     val command = Scan.peek (fn d =>
   387       Parse.position (Scan.one (Token.is_command)) --
   388       Scan.repeat tag
   389       >> (fn ((tok, pos), tags) =>
   390         let val name = Token.content_of tok
   391         in (SOME (name, pos, tags), (Basic_Token tok, (Latex.markup_false, d))) end));
   392 
   393     val cmt = Scan.peek (fn d =>
   394       Parse.$$$ "--" |-- Parse.!!!! (improper |-- Parse.document_source) >>
   395         (fn source => (NONE, (Markup_Token ("cmt", source), ("", d)))));
   396 
   397     val other = Scan.peek (fn d =>
   398        Parse.not_eof >> (fn tok => (NONE, (Basic_Token tok, ("", d)))));
   399 
   400     val token =
   401       ignored ||
   402       markup Keyword.is_document_heading Markup_Token Latex.markup_true ||
   403       markup Keyword.is_document_body Markup_Env_Token Latex.markup_true ||
   404       markup Keyword.is_document_raw (Verbatim_Token o #2) "" ||
   405       command || cmt || other;
   406 
   407 
   408     (* spans *)
   409 
   410     val is_eof = fn (_, (Basic_Token x, _)) => Token.is_eof x | _ => false;
   411     val stopper = Scan.stopper (K (NONE, (Basic_Token Token.eof, ("", 0)))) is_eof;
   412 
   413     val cmd = Scan.one (is_some o fst);
   414     val non_cmd = Scan.one (is_none o fst andf not o is_eof) >> #2;
   415 
   416     val comments = Scan.many (comment_token o fst o snd);
   417     val blank = Scan.one (blank_token o fst o snd);
   418     val newline = Scan.one (newline_token o fst o snd);
   419     val before_cmd =
   420       Scan.option (newline -- comments) --
   421       Scan.option (newline -- comments) --
   422       Scan.option (blank -- comments) -- cmd;
   423 
   424     val span =
   425       Scan.repeat non_cmd -- cmd --
   426         Scan.repeat (Scan.unless before_cmd non_cmd) --
   427         Scan.option (newline >> (single o snd))
   428       >> (fn (((toks1, (cmd, tok2)), toks3), tok4) =>
   429           make_span (the cmd) (toks1 @ (tok2 :: (toks3 @ the_default [] tok4))));
   430 
   431     val spans = toks
   432       |> take_suffix Token.is_space |> #1
   433       |> Source.of_list
   434       |> Source.source' 0 Token.stopper (Scan.error (Scan.bulk token))
   435       |> Source.source stopper (Scan.error (Scan.bulk span))
   436       |> Source.exhaust;
   437 
   438 
   439     (* present commands *)
   440 
   441     fun present_command tr span st st' =
   442       Toplevel.setmp_thread_position tr (present_span keywords span st st');
   443 
   444     fun present _ [] = I
   445       | present st (((tr, st'), span) :: rest) = present_command tr span st st' #> present st' rest;
   446   in
   447     if length command_results = length spans then
   448       ((NONE, []), NONE, true, Buffer.empty, (I, I))
   449       |> present Toplevel.toplevel (command_results ~~ spans)
   450       |> present_trailer
   451     else error "Messed-up outer syntax for presentation"
   452   end;
   453 
   454 end;
   455 
   456 
   457 
   458 (** setup default output **)
   459 
   460 (* options *)
   461 
   462 val _ = Theory.setup
   463  (add_option @{binding show_types} (Config.put show_types o boolean) #>
   464   add_option @{binding show_sorts} (Config.put show_sorts o boolean) #>
   465   add_option @{binding show_structs} (Config.put show_structs o boolean) #>
   466   add_option @{binding show_question_marks} (Config.put show_question_marks o boolean) #>
   467   add_option @{binding show_abbrevs} (Config.put show_abbrevs o boolean) #>
   468   add_option @{binding names_long} (Config.put Name_Space.names_long o boolean) #>
   469   add_option @{binding names_short} (Config.put Name_Space.names_short o boolean) #>
   470   add_option @{binding names_unique} (Config.put Name_Space.names_unique o boolean) #>
   471   add_option @{binding eta_contract} (Config.put Syntax_Trans.eta_contract o boolean) #>
   472   add_option @{binding display} (Config.put display o boolean) #>
   473   add_option @{binding break} (Config.put break o boolean) #>
   474   add_option @{binding quotes} (Config.put quotes o boolean) #>
   475   add_option @{binding mode} (add_wrapper o Print_Mode.with_modes o single) #>
   476   add_option @{binding margin} (Config.put margin o integer) #>
   477   add_option @{binding indent} (Config.put indent o integer) #>
   478   add_option @{binding source} (Config.put source o boolean) #>
   479   add_option @{binding goals_limit} (Config.put Goal_Display.goals_limit o integer));
   480 
   481 
   482 (* basic pretty printing *)
   483 
   484 fun tweak_line ctxt s =
   485   if Config.get ctxt display then s else Symbol.strip_blanks s;
   486 
   487 fun pretty_text ctxt =
   488   Pretty.chunks o map Pretty.str o map (tweak_line ctxt) o split_lines;
   489 
   490 fun pretty_text_report ctxt source =
   491  (Context_Position.report ctxt (Input.pos_of source)
   492     (Markup.language_text (Input.is_delimited source));
   493   pretty_text ctxt (Input.source_content source));
   494 
   495 fun pretty_term ctxt t = Syntax.pretty_term (Variable.auto_fixes t ctxt) t;
   496 
   497 fun pretty_thm ctxt = pretty_term ctxt o Thm.full_prop_of;
   498 
   499 fun pretty_term_style ctxt (style, t) =
   500   pretty_term ctxt (style t);
   501 
   502 fun pretty_thm_style ctxt (style, th) =
   503   pretty_term ctxt (style (Thm.full_prop_of th));
   504 
   505 fun pretty_term_typ ctxt (style, t) =
   506   let val t' = style t
   507   in pretty_term ctxt (Type.constraint (Term.fastype_of t') t') end;
   508 
   509 fun pretty_term_typeof ctxt (style, t) =
   510   Syntax.pretty_typ ctxt (Term.fastype_of (style t));
   511 
   512 fun pretty_const ctxt c =
   513   let
   514     val t = Const (c, Consts.type_scheme (Proof_Context.consts_of ctxt) c)
   515       handle TYPE (msg, _, _) => error msg;
   516     val ([t'], _) = Variable.import_terms true [t] ctxt;
   517   in pretty_term ctxt t' end;
   518 
   519 fun pretty_abbrev ctxt s =
   520   let
   521     val t = Syntax.read_term (Proof_Context.set_mode Proof_Context.mode_abbrev ctxt) s;
   522     fun err () = error ("Abbreviated constant expected: " ^ Syntax.string_of_term ctxt t);
   523     val (head, args) = Term.strip_comb t;
   524     val (c, T) = Term.dest_Const head handle TERM _ => err ();
   525     val (U, u) = Consts.the_abbreviation (Proof_Context.consts_of ctxt) c
   526       handle TYPE _ => err ();
   527     val t' = Term.betapplys (Envir.expand_atom T (U, u), args);
   528     val eq = Logic.mk_equals (t, t');
   529     val ctxt' = Variable.auto_fixes eq ctxt;
   530   in Proof_Context.pretty_term_abbrev ctxt' eq end;
   531 
   532 fun pretty_class ctxt =
   533   Pretty.str o Proof_Context.extern_class ctxt o Proof_Context.read_class ctxt;
   534 
   535 fun pretty_type ctxt s =
   536   let val Type (name, _) = Proof_Context.read_type_name {proper = true, strict = false} ctxt s
   537   in Pretty.str (Proof_Context.extern_type ctxt name) end;
   538 
   539 fun pretty_prf full ctxt = Proof_Syntax.pretty_proof_of ctxt full;
   540 
   541 fun pretty_theory ctxt (name, pos) =
   542   (case find_first (fn thy => Context.theory_name thy = name)
   543       (Theory.nodes_of (Proof_Context.theory_of ctxt)) of
   544     NONE => error ("No ancestor theory " ^ quote name ^ Position.here pos)
   545   | SOME thy => (Context_Position.report ctxt pos (Theory.get_markup thy); Pretty.str name));
   546 
   547 
   548 (* default output *)
   549 
   550 val str_of_source = space_implode " " o Token.unparse_src;
   551 
   552 fun maybe_pretty_source pretty ctxt src xs =
   553   map (pretty ctxt) xs  (*always pretty in order to exhibit errors!*)
   554   |> (if Config.get ctxt source then K [pretty_text ctxt (str_of_source src)] else I);
   555 
   556 fun string_of_margin ctxt = Pretty.string_of_margin (Config.get ctxt margin);
   557 
   558 fun output ctxt prts =
   559   prts
   560   |> Config.get ctxt quotes ? map Pretty.quote
   561   |> (if Config.get ctxt display then
   562         map (Pretty.indent (Config.get ctxt indent) #> string_of_margin ctxt #> Output.output)
   563         #> space_implode "\\isasep\\isanewline%\n"
   564         #> enclose "\\begin{isabelle}%\n" "%\n\\end{isabelle}"
   565       else
   566         map ((if Config.get ctxt break then string_of_margin ctxt else Pretty.str_of) #>
   567           Output.output)
   568         #> space_implode "\\isasep\\isanewline%\n"
   569         #> enclose "\\isa{" "}");
   570 
   571 
   572 
   573 (** concrete antiquotations **)
   574 
   575 (* basic entities *)
   576 
   577 local
   578 
   579 fun basic_entities name scan pretty =
   580   antiquotation name scan (fn {source, context, ...} =>
   581     output context o maybe_pretty_source pretty context source);
   582 
   583 fun basic_entities_style name scan pretty =
   584   antiquotation name scan (fn {source, context, ...} => fn (style, xs) =>
   585     output context
   586       (maybe_pretty_source (fn ctxt => fn x => pretty ctxt (style, x)) context source xs));
   587 
   588 fun basic_entity name scan = basic_entities name (scan >> single);
   589 
   590 in
   591 
   592 val _ = Theory.setup
   593  (basic_entities_style @{binding thm} (Term_Style.parse -- Attrib.thms) pretty_thm_style #>
   594   basic_entity @{binding prop} (Term_Style.parse -- Args.prop) pretty_term_style #>
   595   basic_entity @{binding term} (Term_Style.parse -- Args.term) pretty_term_style #>
   596   basic_entity @{binding term_type} (Term_Style.parse -- Args.term) pretty_term_typ #>
   597   basic_entity @{binding typeof} (Term_Style.parse -- Args.term) pretty_term_typeof #>
   598   basic_entity @{binding const} (Args.const {proper = true, strict = false}) pretty_const #>
   599   basic_entity @{binding abbrev} (Scan.lift Args.name_inner_syntax) pretty_abbrev #>
   600   basic_entity @{binding typ} Args.typ_abbrev Syntax.pretty_typ #>
   601   basic_entity @{binding class} (Scan.lift Args.name_inner_syntax) pretty_class #>
   602   basic_entity @{binding type} (Scan.lift Args.name) pretty_type #>
   603   basic_entity @{binding text} (Scan.lift Args.text_source_position) pretty_text_report #>
   604   basic_entities @{binding prf} Attrib.thms (pretty_prf false) #>
   605   basic_entities @{binding full_prf} Attrib.thms (pretty_prf true) #>
   606   basic_entity @{binding theory} (Scan.lift (Parse.position Args.name)) pretty_theory);
   607 
   608 end;
   609 
   610 
   611 (* goal state *)
   612 
   613 local
   614 
   615 fun proof_state state =
   616   (case try (Proof.goal o Toplevel.proof_of) state of
   617     SOME {goal, ...} => goal
   618   | _ => error "No proof state");
   619 
   620 fun goal_state name main = antiquotation name (Scan.succeed ())
   621   (fn {state, context = ctxt, ...} => fn () =>
   622     output ctxt
   623       [Goal_Display.pretty_goal
   624         (Config.put Goal_Display.show_main_goal main ctxt) (proof_state state)]);
   625 
   626 in
   627 
   628 val _ = Theory.setup
   629  (goal_state @{binding goals} true #>
   630   goal_state @{binding subgoals} false);
   631 
   632 end;
   633 
   634 
   635 (* embedded lemma *)
   636 
   637 val _ = Theory.setup
   638   (antiquotation @{binding lemma}
   639     (Scan.lift (Scan.ahead Parse.not_eof) -- Args.prop --
   640       Scan.lift (Parse.position (Parse.reserved "by") -- Method.parse -- Scan.option Method.parse))
   641     (fn {source, context = ctxt, ...} => fn ((prop_token, prop), (((_, by_pos), m1), m2)) =>
   642       let
   643         val prop_src = Token.src (Token.name_of_src source) [prop_token];
   644 
   645         val reports = (by_pos, Markup.keyword1) :: maps Method.reports_of (m1 :: the_list m2);
   646         val _ = Context_Position.reports ctxt reports;
   647 
   648         (* FIXME check proof!? *)
   649         val _ = ctxt
   650           |> Proof.theorem NONE (K I) [[(prop, [])]]
   651           |> Proof.global_terminal_proof (m1, m2);
   652       in output ctxt (maybe_pretty_source pretty_term ctxt prop_src [prop]) end));
   653 
   654 
   655 (* verbatim text *)
   656 
   657 fun verbatim_text ctxt =
   658   if Config.get ctxt display then
   659     Latex.output_ascii #>
   660     enclose "\\begin{isabellett}%\n" "%\n\\end{isabellett}"
   661   else
   662     split_lines #>
   663     map (Latex.output_ascii #> enclose "\\isatt{" "}") #>
   664     space_implode "\\isasep\\isanewline%\n";
   665 
   666 val _ =
   667   Theory.setup
   668     (antiquotation @{binding verbatim} (Scan.lift Args.text) (verbatim_text o #context));
   669 
   670 
   671 (* ML text *)
   672 
   673 local
   674 
   675 fun ml_text name ml = antiquotation name (Scan.lift Args.text_source_position)
   676   (fn {context = ctxt, ...} => fn source =>
   677    (ML_Context.eval_in (SOME ctxt) ML_Compiler.flags (Input.pos_of source) (ml source);
   678     verbatim_text ctxt (Input.source_content source)));
   679 
   680 fun ml_enclose bg en source =
   681   ML_Lex.read bg @ ML_Lex.read_source false source @ ML_Lex.read en;
   682 
   683 in
   684 
   685 val _ = Theory.setup
   686  (ml_text @{binding ML} (ml_enclose "fn _ => (" ");") #>
   687   ml_text @{binding ML_op} (ml_enclose "fn _ => (op " ");") #>
   688   ml_text @{binding ML_type} (ml_enclose "val _ = NONE : (" ") option;") #>
   689   ml_text @{binding ML_structure}
   690     (ml_enclose "functor XXX() = struct structure XX = " " end;") #>
   691 
   692   ml_text @{binding ML_functor}   (* FIXME formal treatment of functor name (!?) *)
   693     (fn source =>
   694       ML_Lex.read ("ML_Env.check_functor " ^
   695         ML_Syntax.print_string (Input.source_content source))) #>
   696 
   697   ml_text @{binding ML_text} (K []));
   698 
   699 end;
   700 
   701 
   702 (* URLs *)
   703 
   704 val _ = Theory.setup
   705   (antiquotation @{binding url} (Scan.lift (Parse.position Parse.name))
   706     (fn {context = ctxt, ...} => fn (name, pos) =>
   707       (Context_Position.reports ctxt [(pos, Markup.language_path), (pos, Markup.url name)];
   708        enclose "\\url{" "}" name)));
   709 
   710 
   711 
   712 (** document commands **)
   713 
   714 fun old_header_command txt =
   715   Toplevel.keep (fn state =>
   716     if Toplevel.is_toplevel state then
   717      (legacy_feature "Obsolete 'header' command -- use 'chapter', 'section' etc. instead";
   718       check_text txt state)
   719     else raise Toplevel.UNDEF);
   720 
   721 fun document_command (loc, txt) =
   722   Toplevel.keep (fn state =>
   723     (case loc of
   724       NONE => check_text txt state
   725     | SOME (_, pos) =>
   726         error ("Illegal target specification -- not a theory context" ^ Position.here pos))) o
   727   Toplevel.present_local_theory loc (check_text txt);
   728 
   729 end;