src/Tools/jEdit/src/isabelle_rendering.scala
author wenzelm
Mon Oct 01 16:37:22 2012 +0200 (2012-10-01)
changeset 49674 dbadb4d03cbc
parent 49554 7b7bd2d7661d
child 49700 2d1cbdf6a68b
permissions -rw-r--r--
report sort assignment of visible type variables;
     1 /*  Title:      Tools/jEdit/src/isabelle_rendering.scala
     2     Author:     Makarius
     3 
     4 Isabelle specific physical rendering and markup selection.
     5 */
     6 
     7 package isabelle.jedit
     8 
     9 
    10 import isabelle._
    11 
    12 import java.awt.Color
    13 import javax.swing.Icon
    14 import java.io.{File => JFile}
    15 
    16 import org.gjt.sp.jedit.syntax.{Token => JEditToken}
    17 import org.gjt.sp.jedit.GUIUtilities
    18 import org.gjt.sp.util.Log
    19 
    20 import scala.collection.immutable.SortedMap
    21 
    22 
    23 object Isabelle_Rendering
    24 {
    25   def apply(snapshot: Document.Snapshot, options: Options): Isabelle_Rendering =
    26     new Isabelle_Rendering(snapshot, options)
    27 
    28 
    29   /* message priorities */
    30 
    31   private val writeln_pri = 1
    32   private val tracing_pri = 2
    33   private val warning_pri = 3
    34   private val legacy_pri = 4
    35   private val error_pri = 5
    36 
    37   private val message_pri = Map(
    38     Isabelle_Markup.WRITELN -> writeln_pri, Isabelle_Markup.WRITELN_MESSAGE -> writeln_pri,
    39     Isabelle_Markup.TRACING -> tracing_pri, Isabelle_Markup.TRACING_MESSAGE -> tracing_pri,
    40     Isabelle_Markup.WARNING -> warning_pri, Isabelle_Markup.WARNING_MESSAGE -> warning_pri,
    41     Isabelle_Markup.ERROR -> error_pri, Isabelle_Markup.ERROR_MESSAGE -> error_pri)
    42 
    43 
    44   /* icons */
    45 
    46   private def load_icon(name: String): Icon =
    47   {
    48     val icon = GUIUtilities.loadIcon(name)
    49     if (icon.getIconWidth < 0 || icon.getIconHeight < 0)
    50       Log.log(Log.ERROR, icon, "Bad icon: " + name)
    51     icon
    52   }
    53 
    54   private val gutter_icons = Map(
    55     warning_pri -> load_icon("16x16/status/dialog-information.png"),
    56     legacy_pri -> load_icon("16x16/status/dialog-warning.png"),
    57     error_pri -> load_icon("16x16/status/dialog-error.png"))
    58 
    59 
    60   /* token markup -- text styles */
    61 
    62   private val command_style: Map[String, Byte] =
    63   {
    64     import JEditToken._
    65     Map[String, Byte](
    66       Keyword.THY_END -> KEYWORD2,
    67       Keyword.THY_SCRIPT -> LABEL,
    68       Keyword.PRF_SCRIPT -> LABEL,
    69       Keyword.PRF_ASM -> KEYWORD3,
    70       Keyword.PRF_ASM_GOAL -> KEYWORD3
    71     ).withDefaultValue(KEYWORD1)
    72   }
    73 
    74   private val token_style: Map[Token.Kind.Value, Byte] =
    75   {
    76     import JEditToken._
    77     Map[Token.Kind.Value, Byte](
    78       Token.Kind.KEYWORD -> KEYWORD2,
    79       Token.Kind.IDENT -> NULL,
    80       Token.Kind.LONG_IDENT -> NULL,
    81       Token.Kind.SYM_IDENT -> NULL,
    82       Token.Kind.VAR -> NULL,
    83       Token.Kind.TYPE_IDENT -> NULL,
    84       Token.Kind.TYPE_VAR -> NULL,
    85       Token.Kind.NAT -> NULL,
    86       Token.Kind.FLOAT -> NULL,
    87       Token.Kind.STRING -> LITERAL1,
    88       Token.Kind.ALT_STRING -> LITERAL2,
    89       Token.Kind.VERBATIM -> COMMENT3,
    90       Token.Kind.SPACE -> NULL,
    91       Token.Kind.COMMENT -> COMMENT1,
    92       Token.Kind.ERROR -> INVALID
    93     ).withDefaultValue(NULL)
    94   }
    95 
    96   def token_markup(syntax: Outer_Syntax, token: Token): Byte =
    97     if (token.is_command) command_style(syntax.keyword_kind(token.content).getOrElse(""))
    98     else if (token.is_operator) JEditToken.OPERATOR
    99     else token_style(token.kind)
   100 }
   101 
   102 
   103 class Isabelle_Rendering private(val snapshot: Document.Snapshot, val options: Options)
   104 {
   105   /* colors */
   106 
   107   def color_value(s: String): Color = Color_Value(options.string(s))
   108 
   109   val outdated_color = color_value("outdated_color")
   110   val unprocessed_color = color_value("unprocessed_color")
   111   val unprocessed1_color = color_value("unprocessed1_color")
   112   val running_color = color_value("running_color")
   113   val running1_color = color_value("running1_color")
   114   val light_color = color_value("light_color")
   115   val writeln_color = color_value("writeln_color")
   116   val warning_color = color_value("warning_color")
   117   val error_color = color_value("error_color")
   118   val error1_color = color_value("error1_color")
   119   val writeln_message_color = color_value("writeln_message_color")
   120   val tracing_message_color = color_value("tracing_message_color")
   121   val warning_message_color = color_value("warning_message_color")
   122   val error_message_color = color_value("error_message_color")
   123   val bad_color = color_value("bad_color")
   124   val intensify_color = color_value("intensify_color")
   125   val quoted_color = color_value("quoted_color")
   126   val highlight_color = color_value("highlight_color")
   127   val hyperlink_color = color_value("hyperlink_color")
   128   val sendback_color = color_value("sendback_color")
   129   val sendback_active_color = color_value("sendback_active_color")
   130   val keyword1_color = color_value("keyword1_color")
   131   val keyword2_color = color_value("keyword2_color")
   132 
   133   val tfree_color = color_value("tfree_color")
   134   val tvar_color = color_value("tvar_color")
   135   val free_color = color_value("free_color")
   136   val skolem_color = color_value("skolem_color")
   137   val bound_color = color_value("bound_color")
   138   val var_color = color_value("var_color")
   139   val inner_numeral_color = color_value("inner_numeral_color")
   140   val inner_quoted_color = color_value("inner_quoted_color")
   141   val inner_comment_color = color_value("inner_comment_color")
   142   val antiquotation_color = color_value("antiquotation_color")
   143   val dynamic_color = color_value("dynamic_color")
   144 
   145 
   146   /* command overview */
   147 
   148   def overview_color(range: Text.Range): Option[Color] =
   149   {
   150     if (snapshot.is_outdated) None
   151     else {
   152       val results =
   153         snapshot.cumulate_markup[(Protocol.Status, Int)](
   154           range, (Protocol.Status.init, 0),
   155           Some(Protocol.command_status_markup + Isabelle_Markup.WARNING + Isabelle_Markup.ERROR),
   156           {
   157             case ((status, pri), Text.Info(_, XML.Elem(markup, _))) =>
   158               if (markup.name == Isabelle_Markup.WARNING || markup.name == Isabelle_Markup.ERROR)
   159                 (status, pri max Isabelle_Rendering.message_pri(markup.name))
   160               else (Protocol.command_status(status, markup), pri)
   161           })
   162       if (results.isEmpty) None
   163       else {
   164         val (status, pri) =
   165           ((Protocol.Status.init, 0) /: results) {
   166             case ((s1, p1), Text.Info(_, (s2, p2))) => (s1 + s2, p1 max p2) }
   167 
   168         if (pri == Isabelle_Rendering.warning_pri) Some(warning_color)
   169         else if (pri == Isabelle_Rendering.error_pri) Some(error_color)
   170         else if (status.is_unprocessed) Some(unprocessed_color)
   171         else if (status.is_running) Some(running_color)
   172         else if (status.is_failed) Some(error_color)
   173         else None
   174       }
   175     }
   176   }
   177 
   178 
   179   /* markup selectors */
   180 
   181   private val highlight_include =
   182     Set(Isabelle_Markup.SORT, Isabelle_Markup.TYP, Isabelle_Markup.TERM, Isabelle_Markup.PROP,
   183       Isabelle_Markup.ML_TYPING, Isabelle_Markup.TOKEN_RANGE, Isabelle_Markup.ENTITY,
   184       Isabelle_Markup.PATH, Isabelle_Markup.SORTING, Isabelle_Markup.TYPING, Isabelle_Markup.FREE,
   185       Isabelle_Markup.SKOLEM, Isabelle_Markup.BOUND, Isabelle_Markup.VAR, Isabelle_Markup.TFREE,
   186       Isabelle_Markup.TVAR, Isabelle_Markup.ML_SOURCE, Isabelle_Markup.DOCUMENT_SOURCE)
   187 
   188   def highlight(range: Text.Range): Option[Text.Info[Color]] =
   189   {
   190     snapshot.select_markup(range, Some(highlight_include),
   191         {
   192           case Text.Info(info_range, XML.Elem(Markup(name, _), _)) if highlight_include(name) =>
   193             Text.Info(snapshot.convert(info_range), highlight_color)
   194         }) match { case Text.Info(_, info) #:: _ => Some(info) case _ => None }
   195   }
   196 
   197 
   198   private val hyperlink_include = Set(Isabelle_Markup.ENTITY, Isabelle_Markup.PATH)
   199 
   200   def hyperlink(range: Text.Range): Option[Text.Info[Hyperlink]] =
   201   {
   202     snapshot.cumulate_markup[List[Text.Info[Hyperlink]]](range, Nil, Some(hyperlink_include),
   203         {
   204           case (links, Text.Info(info_range, XML.Elem(Isabelle_Markup.Path(name), _)))
   205           if Path.is_ok(name) =>
   206             val jedit_file = Isabelle.thy_load.append(snapshot.node_name.dir, Path.explode(name))
   207             Text.Info(snapshot.convert(info_range), Hyperlink(jedit_file, 0, 0)) :: links
   208 
   209           case (links, Text.Info(info_range, XML.Elem(Markup(Isabelle_Markup.ENTITY, props), _)))
   210           if (props.find(
   211             { case (Markup.KIND, Isabelle_Markup.ML_OPEN) => true
   212               case (Markup.KIND, Isabelle_Markup.ML_STRUCT) => true
   213               case _ => false }).isEmpty) =>
   214 
   215             props match {
   216               case Position.Def_Line_File(line, name) if Path.is_ok(name) =>
   217                 Isabelle_System.source_file(Path.explode(name)) match {
   218                   case Some(path) =>
   219                     val jedit_file = Isabelle_System.platform_path(path)
   220                     Text.Info(snapshot.convert(info_range), Hyperlink(jedit_file, line, 0)) :: links
   221                   case None => links
   222                 }
   223 
   224               case Position.Def_Id_Offset(id, offset) =>
   225                 snapshot.state.find_command(snapshot.version, id) match {
   226                   case Some((node, command)) =>
   227                     val sources =
   228                       node.commands.iterator.takeWhile(_ != command).map(_.source) ++
   229                         Iterator.single(command.source(Text.Range(0, command.decode(offset))))
   230                     val (line, column) = ((1, 1) /: sources)(Symbol.advance_line_column)
   231                     Text.Info(snapshot.convert(info_range),
   232                       Hyperlink(command.node_name.node, line, column)) :: links
   233                   case None => links
   234                 }
   235 
   236               case _ => links
   237             }
   238         }) match { case Text.Info(_, info :: _) #:: _ => Some(info) case _ => None }
   239   }
   240 
   241 
   242   def sendback(range: Text.Range): Option[Text.Info[Document.Exec_ID]] =
   243   {
   244     val results =
   245       snapshot.cumulate_markup[(Option[Document.Exec_ID], Option[Text.Range])](range,
   246         (None, None), Some(messages_include + Isabelle_Markup.SENDBACK),
   247           {
   248             case ((_, info), Text.Info(_, XML.Elem(Markup(name, Position.Id(id)), _)))
   249             if messages_include(name) => (Some(id), info)
   250 
   251             case ((id, _), Text.Info(info_range, XML.Elem(Markup(Isabelle_Markup.SENDBACK, _), _))) =>
   252               (id, Some(snapshot.convert(info_range)))
   253           })
   254 
   255     (for (Text.Info(_, (Some(id), Some(r))) <- results) yield Text.Info(r, id)) match {
   256       case res #:: _ => Some(res)
   257       case _ => None
   258     }
   259   }
   260 
   261 
   262   private def tooltip_text(msg: XML.Tree): String =
   263     Pretty.string_of(List(msg), margin = options.int("jedit_tooltip_margin"))
   264 
   265   def tooltip_message(range: Text.Range): Option[String] =
   266   {
   267     val msgs =
   268       snapshot.cumulate_markup[SortedMap[Long, String]](range, SortedMap.empty,
   269         Some(Set(Isabelle_Markup.WRITELN, Isabelle_Markup.WARNING, Isabelle_Markup.ERROR,
   270           Isabelle_Markup.BAD)),
   271         {
   272           case (msgs, Text.Info(_, msg @
   273               XML.Elem(Markup(markup, Isabelle_Markup.Serial(serial)), _)))
   274           if markup == Isabelle_Markup.WRITELN ||
   275               markup == Isabelle_Markup.WARNING ||
   276               markup == Isabelle_Markup.ERROR =>
   277             msgs + (serial -> tooltip_text(msg))
   278           case (msgs, Text.Info(_, msg @ XML.Elem(Markup(Isabelle_Markup.BAD, _), body)))
   279           if !body.isEmpty => msgs + (Document.new_id() -> tooltip_text(msg))
   280         }).toList.flatMap(_.info)
   281     if (msgs.isEmpty) None else Some(cat_lines(msgs.iterator.map(_._2)))
   282   }
   283 
   284 
   285   private val tooltips: Map[String, String] =
   286     Map(
   287       Isabelle_Markup.SORT -> "sort",
   288       Isabelle_Markup.TYP -> "type",
   289       Isabelle_Markup.TERM -> "term",
   290       Isabelle_Markup.PROP -> "proposition",
   291       Isabelle_Markup.TOKEN_RANGE -> "inner syntax token",
   292       Isabelle_Markup.FREE -> "free variable",
   293       Isabelle_Markup.SKOLEM -> "skolem variable",
   294       Isabelle_Markup.BOUND -> "bound variable",
   295       Isabelle_Markup.VAR -> "schematic variable",
   296       Isabelle_Markup.TFREE -> "free type variable",
   297       Isabelle_Markup.TVAR -> "schematic type variable",
   298       Isabelle_Markup.ML_SOURCE -> "ML source",
   299       Isabelle_Markup.DOCUMENT_SOURCE -> "document source")
   300 
   301   private val tooltip_elements =
   302     Set(Isabelle_Markup.ENTITY, Isabelle_Markup.SORTING, Isabelle_Markup.TYPING,
   303       Isabelle_Markup.ML_TYPING, Isabelle_Markup.PATH) ++ tooltips.keys
   304 
   305   private def string_of_typing(kind: String, body: XML.Body): String =
   306     Pretty.string_of(List(Pretty.block(XML.Text(kind) :: Pretty.Break(1) :: body)),
   307       margin = options.int("jedit_tooltip_margin"))
   308 
   309   def tooltip(range: Text.Range): Option[String] =
   310   {
   311     def add(prev: Text.Info[List[(Boolean, String)]], r: Text.Range, p: (Boolean, String)) =
   312       if (prev.range == r) Text.Info(r, p :: prev.info) else Text.Info(r, List(p))
   313 
   314     val tips =
   315       snapshot.cumulate_markup[Text.Info[(List[(Boolean, String)])]](
   316         range, Text.Info(range, Nil), Some(tooltip_elements),
   317         {
   318           case (prev, Text.Info(r, XML.Elem(Isabelle_Markup.Entity(kind, name), _))) =>
   319             val kind1 = space_explode('_', kind).mkString(" ")
   320             add(prev, r, (true, kind1 + " " + quote(name)))
   321           case (prev, Text.Info(r, XML.Elem(Isabelle_Markup.Path(name), _)))
   322           if Path.is_ok(name) =>
   323             val jedit_file = Isabelle.thy_load.append(snapshot.node_name.dir, Path.explode(name))
   324             add(prev, r, (true, "file " + quote(jedit_file)))
   325           case (prev, Text.Info(r, XML.Elem(Markup(name, _), body)))
   326           if name == Isabelle_Markup.SORTING || name == Isabelle_Markup.TYPING =>
   327             add(prev, r, (true, string_of_typing("::", body)))
   328           case (prev, Text.Info(r, XML.Elem(Markup(Isabelle_Markup.ML_TYPING, _), body))) =>
   329             add(prev, r, (false, string_of_typing("ML:", body)))
   330           case (prev, Text.Info(r, XML.Elem(Markup(name, _), _)))
   331           if tooltips.isDefinedAt(name) => add(prev, r, (true, tooltips(name)))
   332         }).toList.flatMap(_.info.info)
   333 
   334     val all_tips =
   335       (tips.filter(_._1) ++ tips.filter(!_._1).lastOption.toList).map(_._2)
   336     if (all_tips.isEmpty) None else Some(cat_lines(all_tips))
   337   }
   338 
   339 
   340   def gutter_message(range: Text.Range): Option[Icon] =
   341   {
   342     val results =
   343       snapshot.cumulate_markup[Int](range, 0,
   344         Some(Set(Isabelle_Markup.WARNING, Isabelle_Markup.ERROR)),
   345         {
   346           case (pri, Text.Info(_, XML.Elem(Markup(Isabelle_Markup.WARNING, _), body))) =>
   347             body match {
   348               case List(XML.Elem(Markup(Isabelle_Markup.LEGACY, _), _)) =>
   349                 pri max Isabelle_Rendering.legacy_pri
   350               case _ => pri max Isabelle_Rendering.warning_pri
   351             }
   352           case (pri, Text.Info(_, XML.Elem(Markup(Isabelle_Markup.ERROR, _), _))) =>
   353             pri max Isabelle_Rendering.error_pri
   354         })
   355     val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
   356     Isabelle_Rendering.gutter_icons.get(pri)
   357   }
   358 
   359 
   360   private val squiggly_colors = Map(
   361     Isabelle_Rendering.writeln_pri -> writeln_color,
   362     Isabelle_Rendering.warning_pri -> warning_color,
   363     Isabelle_Rendering.error_pri -> error_color)
   364 
   365   def squiggly_underline(range: Text.Range): Stream[Text.Info[Color]] =
   366   {
   367     val results =
   368       snapshot.cumulate_markup[Int](range, 0,
   369         Some(Set(Isabelle_Markup.WRITELN, Isabelle_Markup.WARNING, Isabelle_Markup.ERROR)),
   370         {
   371           case (pri, Text.Info(_, XML.Elem(Markup(name, _), _)))
   372           if name == Isabelle_Markup.WRITELN ||
   373             name == Isabelle_Markup.WARNING ||
   374             name == Isabelle_Markup.ERROR => pri max Isabelle_Rendering.message_pri(name)
   375         })
   376     for {
   377       Text.Info(r, pri) <- results
   378       color <- squiggly_colors.get(pri)
   379     } yield Text.Info(r, color)
   380   }
   381 
   382 
   383   private val messages_include =
   384     Set(Isabelle_Markup.WRITELN_MESSAGE, Isabelle_Markup.TRACING_MESSAGE,
   385       Isabelle_Markup.WARNING_MESSAGE, Isabelle_Markup.ERROR_MESSAGE)
   386 
   387   private val message_colors = Map(
   388     Isabelle_Rendering.writeln_pri -> writeln_message_color,
   389     Isabelle_Rendering.tracing_pri -> tracing_message_color,
   390     Isabelle_Rendering.warning_pri -> warning_message_color,
   391     Isabelle_Rendering.error_pri -> error_message_color)
   392 
   393   def line_background(range: Text.Range): Option[(Color, Boolean)] =
   394   {
   395     val results =
   396       snapshot.cumulate_markup[Int](range, 0, Some(messages_include),
   397         {
   398           case (pri, Text.Info(_, XML.Elem(Markup(name, _), _)))
   399           if name == Isabelle_Markup.WRITELN_MESSAGE ||
   400             name == Isabelle_Markup.TRACING_MESSAGE ||
   401             name == Isabelle_Markup.WARNING_MESSAGE ||
   402             name == Isabelle_Markup.ERROR_MESSAGE => pri max Isabelle_Rendering.message_pri(name)
   403         })
   404     val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
   405 
   406     val is_separator = pri > 0 &&
   407       snapshot.cumulate_markup[Boolean](range, false, Some(Set(Isabelle_Markup.SEPARATOR)),
   408         {
   409           case (_, Text.Info(_, XML.Elem(Markup(Isabelle_Markup.SEPARATOR, _), _))) => true
   410         }).exists(_.info)
   411 
   412     message_colors.get(pri).map((_, is_separator))
   413   }
   414 
   415 
   416   private val background1_include =
   417     Protocol.command_status_markup + Isabelle_Markup.WRITELN_MESSAGE +
   418       Isabelle_Markup.TRACING_MESSAGE + Isabelle_Markup.WARNING_MESSAGE +
   419       Isabelle_Markup.ERROR_MESSAGE + Isabelle_Markup.BAD + Isabelle_Markup.INTENSIFY +
   420       Isabelle_Markup.SENDBACK
   421 
   422   def background1(range: Text.Range): Stream[Text.Info[Color]] =
   423   {
   424     if (snapshot.is_outdated) Stream(Text.Info(range, outdated_color))
   425     else
   426       for {
   427         Text.Info(r, result) <-
   428           snapshot.cumulate_markup[(Option[Protocol.Status], Option[Color])](
   429             range, (Some(Protocol.Status.init), None), Some(background1_include),
   430             {
   431               case (((Some(status), color), Text.Info(_, XML.Elem(markup, _))))
   432               if (Protocol.command_status_markup(markup.name)) =>
   433                 (Some(Protocol.command_status(status, markup)), color)
   434               case (_, Text.Info(_, XML.Elem(Markup(Isabelle_Markup.BAD, _), _))) =>
   435                 (None, Some(bad_color))
   436               case (_, Text.Info(_, XML.Elem(Markup(Isabelle_Markup.INTENSIFY, _), _))) =>
   437                 (None, Some(intensify_color))
   438               case (_, Text.Info(_, XML.Elem(Markup(Isabelle_Markup.SENDBACK, _), _))) =>
   439                 (None, Some(sendback_color))
   440             })
   441         color <-
   442           (result match {
   443             case (Some(status), opt_color) =>
   444               if (status.is_unprocessed) Some(unprocessed1_color)
   445               else if (status.is_running) Some(running1_color)
   446               else opt_color
   447             case (_, opt_color) => opt_color
   448           })
   449       } yield Text.Info(r, color)
   450   }
   451 
   452 
   453   def background2(range: Text.Range): Stream[Text.Info[Color]] =
   454     snapshot.select_markup(range,
   455       Some(Set(Isabelle_Markup.TOKEN_RANGE)),
   456       {
   457         case Text.Info(_, XML.Elem(Markup(Isabelle_Markup.TOKEN_RANGE, _), _)) => light_color
   458       })
   459 
   460 
   461   def foreground(range: Text.Range): Stream[Text.Info[Color]] =
   462     snapshot.select_markup(range,
   463       Some(Set(Isabelle_Markup.STRING, Isabelle_Markup.ALTSTRING, Isabelle_Markup.VERBATIM)),
   464       {
   465         case Text.Info(_, XML.Elem(Markup(Isabelle_Markup.STRING, _), _)) => quoted_color
   466         case Text.Info(_, XML.Elem(Markup(Isabelle_Markup.ALTSTRING, _), _)) => quoted_color
   467         case Text.Info(_, XML.Elem(Markup(Isabelle_Markup.VERBATIM, _), _)) => quoted_color
   468       })
   469 
   470 
   471   private val text_colors: Map[String, Color] = Map(
   472       Isabelle_Markup.KEYWORD1 -> keyword1_color,
   473       Isabelle_Markup.KEYWORD2 -> keyword2_color,
   474       Isabelle_Markup.STRING -> Color.BLACK,
   475       Isabelle_Markup.ALTSTRING -> Color.BLACK,
   476       Isabelle_Markup.VERBATIM -> Color.BLACK,
   477       Isabelle_Markup.LITERAL -> keyword1_color,
   478       Isabelle_Markup.DELIMITER -> Color.BLACK,
   479       Isabelle_Markup.TFREE -> tfree_color,
   480       Isabelle_Markup.TVAR -> tvar_color,
   481       Isabelle_Markup.FREE -> free_color,
   482       Isabelle_Markup.SKOLEM -> skolem_color,
   483       Isabelle_Markup.BOUND -> bound_color,
   484       Isabelle_Markup.VAR -> var_color,
   485       Isabelle_Markup.INNER_STRING -> inner_quoted_color,
   486       Isabelle_Markup.INNER_COMMENT -> inner_comment_color,
   487       Isabelle_Markup.DYNAMIC_FACT -> dynamic_color,
   488       Isabelle_Markup.ML_KEYWORD -> keyword1_color,
   489       Isabelle_Markup.ML_DELIMITER -> Color.BLACK,
   490       Isabelle_Markup.ML_NUMERAL -> inner_numeral_color,
   491       Isabelle_Markup.ML_CHAR -> inner_quoted_color,
   492       Isabelle_Markup.ML_STRING -> inner_quoted_color,
   493       Isabelle_Markup.ML_COMMENT -> inner_comment_color,
   494       Isabelle_Markup.ANTIQ -> antiquotation_color)
   495 
   496   private val text_color_elements = Set.empty[String] ++ text_colors.keys
   497 
   498   def text_color(range: Text.Range, color: Color)
   499       : Stream[Text.Info[Color]] =
   500   {
   501     snapshot.cumulate_markup(range, color, Some(text_color_elements),
   502       {
   503         case (_, Text.Info(_, XML.Elem(Markup(m, _), _)))
   504         if text_colors.isDefinedAt(m) => text_colors(m)
   505       })
   506   }
   507 }