src/Pure/Thy/thy_output.ML
author wenzelm
Tue Mar 25 13:18:10 2014 +0100 (2014-03-25 ago)
changeset 56275 600f432ab556
parent 56204 f70e69208a8c
child 56278 2576d3a40ed6
permissions -rw-r--r--
added command 'SML_file' for Standard ML without Isabelle/ML add-ons;
     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 indent: int Config.T
    12   val source: bool Config.T
    13   val break: bool Config.T
    14   val modes: string Config.T
    15   val add_wrapper: ((unit -> string) -> unit -> string) -> Proof.context -> Proof.context
    16   val add_option: binding -> (string -> Proof.context -> Proof.context) -> theory -> theory
    17   val check_command: Proof.context -> xstring * Position.T -> string
    18   val check_option: Proof.context -> xstring * Position.T -> string
    19   val print_antiquotations: Proof.context -> unit
    20   val antiquotation: binding -> 'a context_parser ->
    21     ({source: Args.src, state: Toplevel.state, context: Proof.context} -> 'a -> string) ->
    22       theory -> theory
    23   val boolean: string -> bool
    24   val integer: string -> int
    25   datatype markup = Markup | MarkupEnv | Verbatim
    26   val eval_antiq: Scan.lexicon -> Toplevel.state -> Antiquote.antiq -> string
    27   val eval_antiquote: Scan.lexicon -> Toplevel.state -> Symbol_Pos.text * Position.T -> string
    28   val check_text: Symbol_Pos.source -> Toplevel.state -> unit
    29   val present_thy: Scan.lexicon -> (string -> string list) -> (markup -> string -> bool) ->
    30     (Toplevel.transition * Toplevel.state) list -> Token.T list -> Buffer.T
    31   val pretty_text: Proof.context -> string -> Pretty.T
    32   val pretty_term: Proof.context -> term -> Pretty.T
    33   val pretty_thm: Proof.context -> thm -> Pretty.T
    34   val str_of_source: Args.src -> string
    35   val maybe_pretty_source: (Proof.context -> 'a -> Pretty.T) -> Proof.context ->
    36     Args.src -> 'a list -> Pretty.T list
    37   val output: Proof.context -> Pretty.T list -> string
    38   val verb_text: string -> string
    39 end;
    40 
    41 structure Thy_Output: THY_OUTPUT =
    42 struct
    43 
    44 (** options **)
    45 
    46 val display = Attrib.setup_option_bool "thy_output_display";
    47 val break = Attrib.setup_option_bool "thy_output_break";
    48 val quotes = Attrib.setup_option_bool "thy_output_quotes";
    49 val indent = Attrib.setup_option_int "thy_output_indent";
    50 val source = Attrib.setup_option_bool "thy_output_source";
    51 val modes = Attrib.setup_option_string "thy_output_modes";
    52 
    53 
    54 structure Wrappers = Proof_Data
    55 (
    56   type T = ((unit -> string) -> unit -> string) list;
    57   fun init _ = [];
    58 );
    59 
    60 fun add_wrapper wrapper = Wrappers.map (cons wrapper);
    61 
    62 val wrap = Wrappers.get #> fold (fn wrapper => fn f => wrapper f);
    63 
    64 
    65 
    66 (** maintain global antiquotations **)
    67 
    68 structure Antiquotations = Theory_Data
    69 (
    70   type T =
    71     (Args.src -> Toplevel.state -> Proof.context -> string) Name_Space.table *
    72       (string -> Proof.context -> Proof.context) Name_Space.table;
    73   val empty : T =
    74     (Name_Space.empty_table Markup.document_antiquotationN,
    75       Name_Space.empty_table Markup.document_antiquotation_optionN);
    76   val extend = I;
    77   fun merge ((commands1, options1), (commands2, options2)) : T =
    78     (Name_Space.merge_tables (commands1, commands2),
    79       Name_Space.merge_tables (options1, options2));
    80 );
    81 
    82 val get_antiquotations = Antiquotations.get o Proof_Context.theory_of;
    83 
    84 fun add_command name cmd thy = thy
    85   |> Antiquotations.map (apfst (Name_Space.define (Context.Theory thy) true (name, cmd) #> snd));
    86 
    87 fun add_option name opt thy = thy
    88   |> Antiquotations.map (apsnd (Name_Space.define (Context.Theory thy) true (name, opt) #> snd));
    89 
    90 fun check_command ctxt = #1 o Name_Space.check (Context.Proof ctxt) (#1 (get_antiquotations ctxt));
    91 
    92 fun check_option ctxt = #1 o Name_Space.check (Context.Proof ctxt) (#2 (get_antiquotations ctxt));
    93 
    94 fun command src state ctxt =
    95   let val (src', f) = Args.check_src ctxt (#1 (get_antiquotations ctxt)) src
    96   in f src' state ctxt end;
    97 
    98 fun option ((xname, pos), s) ctxt =
    99   let
   100     val (_, opt) =
   101       Name_Space.check (Context.Proof ctxt) (#2 (get_antiquotations ctxt)) (xname, pos);
   102   in opt s ctxt end;
   103 
   104 fun print_antiquotations ctxt =
   105   let
   106     val (commands, options) = get_antiquotations ctxt;
   107     val command_names = map #1 (Name_Space.markup_table ctxt commands);
   108     val option_names = map #1 (Name_Space.markup_table ctxt options);
   109   in
   110     [Pretty.big_list "document antiquotations:" (map Pretty.mark_str command_names),
   111       Pretty.big_list "document antiquotation options:" (map Pretty.mark_str option_names)]
   112     |> Pretty.chunks |> Pretty.writeln
   113   end;
   114 
   115 fun antiquotation name scan body =
   116   add_command name
   117     (fn src => fn state => fn ctxt =>
   118       let val (x, ctxt') = Args.syntax scan src ctxt
   119       in body {source = src, state = state, context = ctxt'} x end);
   120 
   121 
   122 
   123 (** syntax of antiquotations **)
   124 
   125 (* option values *)
   126 
   127 fun boolean "" = true
   128   | boolean "true" = true
   129   | boolean "false" = false
   130   | boolean s = error ("Bad boolean value: " ^ quote s);
   131 
   132 fun integer s =
   133   let
   134     fun int ss =
   135       (case Library.read_int ss of (i, []) => i
   136       | _ => error ("Bad integer value: " ^ quote s));
   137   in (case Symbol.explode s of "-" :: ss => ~ (int ss) | ss => int ss) end;
   138 
   139 
   140 (* outer syntax *)
   141 
   142 local
   143 
   144 val property =
   145   Parse.position Parse.xname -- Scan.optional (Parse.$$$ "=" |-- Parse.!!! Parse.xname) "";
   146 
   147 val properties =
   148   Scan.optional (Parse.$$$ "[" |-- Parse.!!! (Parse.enum "," property --| Parse.$$$ "]")) [];
   149 
   150 in
   151 
   152 val antiq =
   153   Parse.!!!
   154     (Parse.position Parse.liberal_name -- properties -- Parse.args --| Scan.ahead Parse.eof)
   155   >> (fn ((name, props), args) => (props, Args.src name args));
   156 
   157 end;
   158 
   159 
   160 (* eval_antiquote *)
   161 
   162 fun eval_antiq lex state ((ss, {range = (pos, _), ...}): Antiquote.antiq) =
   163   let
   164     val (opts, src) = Token.read_antiq lex antiq (ss, pos);
   165     fun cmd ctxt = wrap ctxt (fn () => command src state ctxt) ();
   166     val preview_ctxt = fold option opts (Toplevel.presentation_context_of state);
   167     val print_ctxt = Context_Position.set_visible false preview_ctxt;
   168     val _ = cmd preview_ctxt;
   169     val print_modes = space_explode "," (Config.get print_ctxt modes) @ Latex.modes;
   170   in Print_Mode.with_modes print_modes (fn () => cmd print_ctxt) () end;
   171 
   172 fun eval_antiquote lex state (txt, pos) =
   173   let
   174     fun expand (Antiquote.Text ss) = Symbol_Pos.content ss
   175       | expand (Antiquote.Antiq antiq) = eval_antiq lex state antiq;
   176     val ants = Antiquote.read (Symbol_Pos.explode (txt, pos), pos);
   177   in
   178     if Toplevel.is_toplevel state andalso not (forall Antiquote.is_text ants) then
   179       error ("Unknown context -- cannot expand document antiquotations" ^ Position.here pos)
   180     else implode (map expand ants)
   181   end;
   182 
   183 
   184 fun check_text {delimited, text, pos} state =
   185  (Position.report pos (Markup.language_document delimited);
   186   if Toplevel.is_skipped_proof state then ()
   187   else ignore (eval_antiquote (#1 (Keyword.get_lexicons ())) state (text, pos)));
   188 
   189 
   190 
   191 (** present theory source **)
   192 
   193 (*NB: arranging white space around command spans is a black art.*)
   194 
   195 (* presentation tokens *)
   196 
   197 datatype token =
   198     NoToken
   199   | BasicToken of Token.T
   200   | MarkupToken of string * (string * Position.T)
   201   | MarkupEnvToken of string * (string * Position.T)
   202   | VerbatimToken of string * Position.T;
   203 
   204 fun output_token lex state =
   205   let val eval = eval_antiquote lex state in
   206     fn NoToken => ""
   207      | BasicToken tok => Latex.output_basic tok
   208      | MarkupToken (cmd, txt) => Latex.output_markup cmd (eval txt)
   209      | MarkupEnvToken (cmd, txt) => Latex.output_markup_env cmd (eval txt)
   210      | VerbatimToken txt => Latex.output_verbatim (eval txt)
   211   end;
   212 
   213 fun basic_token pred (BasicToken tok) = pred tok
   214   | basic_token _ _ = false;
   215 
   216 val improper_token = basic_token Token.is_improper;
   217 val comment_token = basic_token Token.is_comment;
   218 val blank_token = basic_token Token.is_blank;
   219 val newline_token = basic_token Token.is_newline;
   220 
   221 
   222 (* command spans *)
   223 
   224 type command = string * Position.T * string list;   (*name, position, tags*)
   225 type source = (token * (string * int)) list;        (*token, markup flag, meta-comment depth*)
   226 
   227 datatype span = Span of command * (source * source * source * source) * bool;
   228 
   229 fun make_span cmd src =
   230   let
   231     fun take_newline (tok :: toks) =
   232           if newline_token (fst tok) then ([tok], toks, true)
   233           else ([], tok :: toks, false)
   234       | take_newline [] = ([], [], false);
   235     val (((src_prefix, src_main), src_suffix1), (src_suffix2, src_appendix, newline)) =
   236       src
   237       |> take_prefix (improper_token o fst)
   238       ||>> take_suffix (improper_token o fst)
   239       ||>> take_prefix (comment_token o fst)
   240       ||> take_newline;
   241   in Span (cmd, (src_prefix, src_main, src_suffix1 @ src_suffix2, src_appendix), newline) end;
   242 
   243 
   244 (* present spans *)
   245 
   246 local
   247 
   248 fun err_bad_nesting pos =
   249   error ("Bad nesting of commands in presentation" ^ pos);
   250 
   251 fun edge which f (x: string option, y) =
   252   if x = y then I
   253   else (case which (x, y) of NONE => I | SOME txt => Buffer.add (f txt));
   254 
   255 val begin_tag = edge #2 Latex.begin_tag;
   256 val end_tag = edge #1 Latex.end_tag;
   257 fun open_delim delim e = edge #2 Latex.begin_delim e #> delim #> edge #2 Latex.end_delim e;
   258 fun close_delim delim e = edge #1 Latex.begin_delim e #> delim #> edge #1 Latex.end_delim e;
   259 
   260 in
   261 
   262 fun present_span lex default_tags span state state'
   263     (tag_stack, active_tag, newline, buffer, present_cont) =
   264   let
   265     val present = fold (fn (tok, (flag, 0)) =>
   266         Buffer.add (output_token lex state' tok)
   267         #> Buffer.add flag
   268       | _ => I);
   269 
   270     val Span ((cmd_name, cmd_pos, cmd_tags), srcs, span_newline) = span;
   271 
   272     val (tag, tags) = tag_stack;
   273     val tag' = try hd (fold (update (op =)) cmd_tags (the_list tag));
   274 
   275     val active_tag' =
   276       if is_some tag' then tag'
   277       else if cmd_name = "end" andalso not (Toplevel.is_toplevel state') then NONE
   278       else try hd (default_tags cmd_name);
   279     val edge = (active_tag, active_tag');
   280 
   281     val newline' =
   282       if is_none active_tag' then span_newline else newline;
   283 
   284     val nesting = Toplevel.level state' - Toplevel.level state;
   285     val tag_stack' =
   286       if nesting = 0 andalso not (Toplevel.is_proof state) then tag_stack
   287       else if nesting >= 0 then (tag', replicate nesting tag @ tags)
   288       else
   289         (case drop (~ nesting - 1) tags of
   290           tgs :: tgss => (tgs, tgss)
   291         | [] => err_bad_nesting (Position.here cmd_pos));
   292 
   293     val buffer' =
   294       buffer
   295       |> end_tag edge
   296       |> close_delim (fst present_cont) edge
   297       |> snd present_cont
   298       |> open_delim (present (#1 srcs)) edge
   299       |> begin_tag edge
   300       |> present (#2 srcs);
   301     val present_cont' =
   302       if newline then (present (#3 srcs), present (#4 srcs))
   303       else (I, present (#3 srcs) #> present (#4 srcs));
   304   in (tag_stack', active_tag', newline', buffer', present_cont') end;
   305 
   306 fun present_trailer ((_, tags), active_tag, _, buffer, present_cont) =
   307   if not (null tags) then err_bad_nesting " at end of theory"
   308   else
   309     buffer
   310     |> end_tag (active_tag, NONE)
   311     |> close_delim (fst present_cont) (active_tag, NONE)
   312     |> snd present_cont;
   313 
   314 end;
   315 
   316 
   317 (* present_thy *)
   318 
   319 datatype markup = Markup | MarkupEnv | Verbatim;
   320 
   321 local
   322 
   323 val space_proper =
   324   Scan.one Token.is_blank -- Scan.many Token.is_comment -- Scan.one Token.is_proper;
   325 
   326 val is_improper = not o (Token.is_proper orf Token.is_begin_ignore orf Token.is_end_ignore);
   327 val improper = Scan.many is_improper;
   328 val improper_end = Scan.repeat (Scan.unless space_proper (Scan.one is_improper));
   329 val blank_end = Scan.repeat (Scan.unless space_proper (Scan.one Token.is_blank));
   330 
   331 val opt_newline = Scan.option (Scan.one Token.is_newline);
   332 
   333 val ignore =
   334   Scan.depend (fn d => opt_newline |-- Scan.one Token.is_begin_ignore
   335     >> pair (d + 1)) ||
   336   Scan.depend (fn d => Scan.one Token.is_end_ignore --|
   337     (if d = 0 then Scan.fail_with (K (fn () => "Bad nesting of meta-comments")) else opt_newline)
   338     >> pair (d - 1));
   339 
   340 val tag = (improper -- Parse.$$$ "%" -- improper) |-- Parse.!!! (Parse.tag_name --| blank_end);
   341 
   342 val locale =
   343   Scan.option ((Parse.$$$ "(" -- improper -- Parse.$$$ "in") |--
   344     Parse.!!! (improper |-- Parse.xname --| (improper -- Parse.$$$ ")")));
   345 
   346 in
   347 
   348 fun present_thy lex default_tags is_markup command_results toks =
   349   let
   350     (* tokens *)
   351 
   352     val ignored = Scan.state --| ignore
   353       >> (fn d => (NONE, (NoToken, ("", d))));
   354 
   355     fun markup mark mk flag = Scan.peek (fn d =>
   356       improper |--
   357         Parse.position (Scan.one (Token.is_command andf is_markup mark o Token.content_of)) --
   358       Scan.repeat tag --
   359       Parse.!!!! ((improper -- locale -- improper) |-- Parse.document_source --| improper_end)
   360       >> (fn (((tok, pos'), tags), {text, pos, ...}) =>
   361         let val name = Token.content_of tok
   362         in (SOME (name, pos', tags), (mk (name, (text, pos)), (flag, d))) end));
   363 
   364     val command = Scan.peek (fn d =>
   365       Parse.position (Scan.one (Token.is_command)) --
   366       Scan.repeat tag
   367       >> (fn ((tok, pos), tags) =>
   368         let val name = Token.content_of tok
   369         in (SOME (name, pos, tags), (BasicToken tok, (Latex.markup_false, d))) end));
   370 
   371     val cmt = Scan.peek (fn d =>
   372       Parse.$$$ "--" |-- Parse.!!!! (improper |-- Parse.document_source)
   373       >> (fn {text, pos, ...} => (NONE, (MarkupToken ("cmt", (text, pos)), ("", d)))));
   374 
   375     val other = Scan.peek (fn d =>
   376        Parse.not_eof >> (fn tok => (NONE, (BasicToken tok, ("", d)))));
   377 
   378     val token =
   379       ignored ||
   380       markup Markup MarkupToken Latex.markup_true ||
   381       markup MarkupEnv MarkupEnvToken Latex.markup_true ||
   382       markup Verbatim (VerbatimToken o #2) "" ||
   383       command || cmt || other;
   384 
   385 
   386     (* spans *)
   387 
   388     val is_eof = fn (_, (BasicToken x, _)) => Token.is_eof x | _ => false;
   389     val stopper = Scan.stopper (K (NONE, (BasicToken Token.eof, ("", 0)))) is_eof;
   390 
   391     val cmd = Scan.one (is_some o fst);
   392     val non_cmd = Scan.one (is_none o fst andf not o is_eof) >> #2;
   393 
   394     val comments = Scan.many (comment_token o fst o snd);
   395     val blank = Scan.one (blank_token o fst o snd);
   396     val newline = Scan.one (newline_token o fst o snd);
   397     val before_cmd =
   398       Scan.option (newline -- comments) --
   399       Scan.option (newline -- comments) --
   400       Scan.option (blank -- comments) -- cmd;
   401 
   402     val span =
   403       Scan.repeat non_cmd -- cmd --
   404         Scan.repeat (Scan.unless before_cmd non_cmd) --
   405         Scan.option (newline >> (single o snd))
   406       >> (fn (((toks1, (cmd, tok2)), toks3), tok4) =>
   407           make_span (the cmd) (toks1 @ (tok2 :: (toks3 @ the_default [] tok4))));
   408 
   409     val spans =
   410       Source.of_list (filter_out Token.is_semicolon toks)
   411       |> Source.source' 0 Token.stopper (Scan.error (Scan.bulk token)) NONE
   412       |> Source.source stopper (Scan.error (Scan.bulk span)) NONE
   413       |> Source.exhaust;
   414 
   415 
   416     (* present commands *)
   417 
   418     fun present_command tr span st st' =
   419       Toplevel.setmp_thread_position tr (present_span lex default_tags span st st');
   420 
   421     fun present _ [] = I
   422       | present st (((tr, st'), span) :: rest) = present_command tr span st st' #> present st' rest;
   423   in
   424     if length command_results = length spans then
   425       ((NONE, []), NONE, true, Buffer.empty, (I, I))
   426       |> present Toplevel.toplevel (command_results ~~ spans)
   427       |> present_trailer
   428     else error "Messed-up outer syntax for presentation"
   429   end;
   430 
   431 end;
   432 
   433 
   434 
   435 (** setup default output **)
   436 
   437 (* options *)
   438 
   439 val _ = Theory.setup
   440  (add_option @{binding show_types} (Config.put show_types o boolean) #>
   441   add_option @{binding show_sorts} (Config.put show_sorts o boolean) #>
   442   add_option @{binding show_structs} (Config.put show_structs o boolean) #>
   443   add_option @{binding show_question_marks} (Config.put show_question_marks o boolean) #>
   444   add_option @{binding show_abbrevs} (Config.put show_abbrevs o boolean) #>
   445   add_option @{binding names_long} (Config.put Name_Space.names_long o boolean) #>
   446   add_option @{binding names_short} (Config.put Name_Space.names_short o boolean) #>
   447   add_option @{binding names_unique} (Config.put Name_Space.names_unique o boolean) #>
   448   add_option @{binding eta_contract} (Config.put Syntax_Trans.eta_contract o boolean) #>
   449   add_option @{binding display} (Config.put display o boolean) #>
   450   add_option @{binding break} (Config.put break o boolean) #>
   451   add_option @{binding quotes} (Config.put quotes o boolean) #>
   452   add_option @{binding mode} (add_wrapper o Print_Mode.with_modes o single) #>
   453   add_option @{binding margin} (add_wrapper o setmp_CRITICAL Pretty.margin_default o integer) #>
   454   add_option @{binding indent} (Config.put indent o integer) #>
   455   add_option @{binding source} (Config.put source o boolean) #>
   456   add_option @{binding goals_limit} (Config.put Goal_Display.goals_limit o integer));
   457 
   458 
   459 (* basic pretty printing *)
   460 
   461 fun tweak_line ctxt s =
   462   if Config.get ctxt display then s else Symbol.strip_blanks s;
   463 
   464 fun pretty_text ctxt =
   465   Pretty.chunks o map Pretty.str o map (tweak_line ctxt) o split_lines;
   466 
   467 fun pretty_text_report ctxt source =
   468   let
   469     val {delimited, pos, ...} = source;
   470     val _ = Context_Position.report ctxt pos (Markup.language_text delimited);
   471     val (s, _) = Symbol_Pos.source_content source;
   472   in pretty_text ctxt s end;
   473 
   474 fun pretty_term ctxt t = Syntax.pretty_term (Variable.auto_fixes t ctxt) t;
   475 
   476 fun pretty_thm ctxt = pretty_term ctxt o Thm.full_prop_of;
   477 
   478 fun pretty_term_style ctxt (style, t) =
   479   pretty_term ctxt (style t);
   480 
   481 fun pretty_thm_style ctxt (style, th) =
   482   pretty_term ctxt (style (Thm.full_prop_of th));
   483 
   484 fun pretty_term_typ ctxt (style, t) =
   485   let val t' = style t
   486   in pretty_term ctxt (Type.constraint (Term.fastype_of t') t') end;
   487 
   488 fun pretty_term_typeof ctxt (style, t) =
   489   Syntax.pretty_typ ctxt (Term.fastype_of (style t));
   490 
   491 fun pretty_const ctxt c =
   492   let
   493     val t = Const (c, Consts.type_scheme (Proof_Context.consts_of ctxt) c)
   494       handle TYPE (msg, _, _) => error msg;
   495     val ([t'], _) = Variable.import_terms true [t] ctxt;
   496   in pretty_term ctxt t' end;
   497 
   498 fun pretty_abbrev ctxt s =
   499   let
   500     val t = Syntax.read_term (Proof_Context.set_mode Proof_Context.mode_abbrev ctxt) s;
   501     fun err () = error ("Abbreviated constant expected: " ^ Syntax.string_of_term ctxt t);
   502     val (head, args) = Term.strip_comb t;
   503     val (c, T) = Term.dest_Const head handle TERM _ => err ();
   504     val (U, u) = Consts.the_abbreviation (Proof_Context.consts_of ctxt) c
   505       handle TYPE _ => err ();
   506     val t' = Term.betapplys (Envir.expand_atom T (U, u), args);
   507     val eq = Logic.mk_equals (t, t');
   508     val ctxt' = Variable.auto_fixes eq ctxt;
   509   in Proof_Context.pretty_term_abbrev ctxt' eq end;
   510 
   511 fun pretty_class ctxt =
   512   Pretty.str o Proof_Context.extern_class ctxt o Proof_Context.read_class ctxt;
   513 
   514 fun pretty_type ctxt s =
   515   let val Type (name, _) = Proof_Context.read_type_name {proper = true, strict = false} ctxt s
   516   in Pretty.str (Proof_Context.extern_type ctxt name) end;
   517 
   518 fun pretty_prf full ctxt = Proof_Syntax.pretty_proof_of ctxt full;
   519 
   520 fun pretty_theory ctxt (name, pos) =
   521   (case find_first (fn thy => Context.theory_name thy = name)
   522       (Theory.nodes_of (Proof_Context.theory_of ctxt)) of
   523     NONE => error ("No ancestor theory " ^ quote name ^ Position.here pos)
   524   | SOME thy => (Context_Position.report ctxt pos (Theory.get_markup thy); Pretty.str name));
   525 
   526 
   527 (* default output *)
   528 
   529 val str_of_source = space_implode " " o Args.unparse_src;
   530 
   531 fun maybe_pretty_source pretty ctxt src xs =
   532   map (pretty ctxt) xs  (*always pretty in order to exhibit errors!*)
   533   |> (if Config.get ctxt source then K [pretty_text ctxt (str_of_source src)] else I);
   534 
   535 fun output ctxt prts =
   536   prts
   537   |> (if Config.get ctxt quotes then map Pretty.quote else I)
   538   |> (if Config.get ctxt display then
   539     map (Output.output o Pretty.string_of o Pretty.indent (Config.get ctxt indent))
   540     #> space_implode "\\isasep\\isanewline%\n"
   541     #> enclose "\\begin{isabelle}%\n" "%\n\\end{isabelle}"
   542   else
   543     map (Output.output o (if Config.get ctxt break then Pretty.string_of else Pretty.str_of))
   544     #> space_implode "\\isasep\\isanewline%\n"
   545     #> enclose "\\isa{" "}");
   546 
   547 
   548 
   549 (** concrete antiquotations **)
   550 
   551 (* basic entities *)
   552 
   553 local
   554 
   555 fun basic_entities name scan pretty = antiquotation name scan
   556   (fn {source, context, ...} => output context o maybe_pretty_source pretty context source);
   557 
   558 fun basic_entities_style name scan pretty = antiquotation name scan
   559   (fn {source, context, ...} => fn (style, xs) =>
   560     output context
   561       (maybe_pretty_source (fn ctxt => fn x => pretty ctxt (style, x)) context source xs));
   562 
   563 fun basic_entity name scan = basic_entities name (scan >> single);
   564 
   565 in
   566 
   567 val _ = Theory.setup
   568  (basic_entities_style @{binding thm} (Term_Style.parse -- Attrib.thms) pretty_thm_style #>
   569   basic_entity @{binding prop} (Term_Style.parse -- Args.prop) pretty_term_style #>
   570   basic_entity @{binding term} (Term_Style.parse -- Args.term) pretty_term_style #>
   571   basic_entity @{binding term_type} (Term_Style.parse -- Args.term) pretty_term_typ #>
   572   basic_entity @{binding typeof} (Term_Style.parse -- Args.term) pretty_term_typeof #>
   573   basic_entity @{binding const} (Args.const {proper = true, strict = false}) pretty_const #>
   574   basic_entity @{binding abbrev} (Scan.lift Args.name_inner_syntax) pretty_abbrev #>
   575   basic_entity @{binding typ} Args.typ_abbrev Syntax.pretty_typ #>
   576   basic_entity @{binding class} (Scan.lift Args.name_inner_syntax) pretty_class #>
   577   basic_entity @{binding type} (Scan.lift Args.name) pretty_type #>
   578   basic_entity @{binding text} (Scan.lift Args.name_source_position) pretty_text_report #>
   579   basic_entities @{binding prf} Attrib.thms (pretty_prf false) #>
   580   basic_entities @{binding full_prf} Attrib.thms (pretty_prf true) #>
   581   basic_entity @{binding theory} (Scan.lift (Parse.position Args.name)) pretty_theory);
   582 
   583 end;
   584 
   585 
   586 (* goal state *)
   587 
   588 local
   589 
   590 fun proof_state state =
   591   (case try (Proof.goal o Toplevel.proof_of) state of
   592     SOME {goal, ...} => goal
   593   | _ => error "No proof state");
   594 
   595 fun goal_state name main = antiquotation name (Scan.succeed ())
   596   (fn {state, context = ctxt, ...} => fn () => output ctxt
   597     [Goal_Display.pretty_goal
   598       (Config.put Goal_Display.show_main_goal main ctxt) (proof_state state)]);
   599 
   600 in
   601 
   602 val _ = Theory.setup
   603  (goal_state @{binding goals} true #>
   604   goal_state @{binding subgoals} false);
   605 
   606 end;
   607 
   608 
   609 (* embedded lemma *)
   610 
   611 val _ = Keyword.define ("by", NONE);  (*overlap with command category*)
   612 
   613 val _ = Theory.setup
   614   (antiquotation @{binding lemma}
   615     (Scan.lift (Scan.ahead Parse.not_eof) -- Args.prop --
   616       Scan.lift (Parse.position (Args.$$$ "by") -- Method.parse -- Scan.option Method.parse))
   617     (fn {source, context = ctxt, ...} => fn ((prop_token, prop), (((_, by_pos), m1), m2)) =>
   618       let
   619         val prop_src = Args.src (Args.name_of_src source) [prop_token];
   620 
   621         val reports = (by_pos, Markup.keyword1) :: maps Method.reports_of (m1 :: the_list m2);
   622         val _ = Context_Position.reports ctxt reports;
   623 
   624         (* FIXME check proof!? *)
   625         val _ = ctxt
   626           |> Proof.theorem NONE (K I) [[(prop, [])]]
   627           |> Proof.global_terminal_proof (m1, m2);
   628       in output ctxt (maybe_pretty_source pretty_term ctxt prop_src [prop]) end));
   629 
   630 
   631 (* ML text *)
   632 
   633 val verb_text =
   634   split_lines
   635   #> map (space_implode "\\verb,|," o map (enclose "\\verb|" "|") o space_explode "|")
   636   #> space_implode "\\isasep\\isanewline%\n";
   637 
   638 local
   639 
   640 fun ml_text name ml = antiquotation name (Scan.lift Args.name_source_position)
   641   (fn {context, ...} => fn source =>
   642    (ML_Context.eval_in (SOME context) {SML = false, verbose = false} (#pos source) (ml source);
   643     Symbol_Pos.source_content source
   644     |> #1
   645     |> (if Config.get context quotes then quote else I)
   646     |> (if Config.get context display then enclose "\\begin{verbatim}\n" "\n\\end{verbatim}"
   647         else verb_text)));
   648 
   649 fun ml_enclose bg en source =
   650   ML_Lex.read Position.none bg @
   651   ML_Lex.read_source source @
   652   ML_Lex.read Position.none en;
   653 
   654 in
   655 
   656 val _ = Theory.setup
   657  (ml_text @{binding ML} (ml_enclose "fn _ => (" ");") #>
   658   ml_text @{binding ML_op} (ml_enclose "fn _ => (op " ");") #>
   659   ml_text @{binding ML_type} (ml_enclose "val _ = NONE : (" ") option;") #>
   660   ml_text @{binding ML_structure}
   661     (ml_enclose "functor XXX() = struct structure XX = " " end;") #>
   662 
   663   ml_text @{binding ML_functor}   (* FIXME formal treatment of functor name (!?) *)
   664     (fn source =>
   665       ML_Lex.read Position.none ("ML_Env.check_functor " ^
   666         ML_Syntax.print_string (#1 (Symbol_Pos.source_content source)))) #>
   667 
   668   ml_text @{binding ML_text} (K []));
   669 
   670 end;
   671 
   672 
   673 (* URLs *)
   674 
   675 val _ = Theory.setup
   676   (antiquotation @{binding url} (Scan.lift (Parse.position Parse.name))
   677     (fn {context = ctxt, ...} => fn (name, pos) =>
   678       (Context_Position.reports ctxt [(pos, Markup.language_path), (pos, Markup.url name)];
   679        enclose "\\url{" "}" name)));
   680 
   681 end;