src/Pure/PIDE/markup.scala
author wenzelm
Tue Jan 02 15:38:22 2018 +0100 (23 months ago ago)
changeset 67322 734a4e44b159
parent 66942 91a21a5631ae
child 67323 d02208cefbdb
permissions -rw-r--r--
clarified terminology of "markdown_bullet";
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/*  Title:      Pure/PIDE/markup.scala
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    Author:     Makarius
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Quasi-abstract markup elements.
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*/
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package isabelle
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object Markup
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{
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  /* elements */
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  object Elements
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  {
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    def apply(elems: Set[String]): Elements = new Elements(elems)
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    def apply(elems: String*): Elements = apply(Set(elems: _*))
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    val empty: Elements = apply()
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    val full: Elements =
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      new Elements(Set.empty)
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      {
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        override def apply(elem: String): Boolean = true
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        override def toString: String = "Elements.full"
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      }
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  }
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  sealed class Elements private[Markup](private val rep: Set[String])
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  {
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    def apply(elem: String): Boolean = rep.contains(elem)
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    def + (elem: String): Elements = new Elements(rep + elem)
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    def ++ (elems: Elements): Elements = new Elements(rep ++ elems.rep)
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    def - (elem: String): Elements = new Elements(rep - elem)
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    def -- (elems: Elements): Elements = new Elements(rep -- elems.rep)
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    override def toString: String = rep.mkString("Elements(", ",", ")")
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  }
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  /* properties */
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  val NAME = "name"
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  val Name = new Properties.String(NAME)
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  val KIND = "kind"
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  val Kind = new Properties.String(KIND)
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  val CONTENT = "content"
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  val Content = new Properties.String(CONTENT)
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  val SERIAL = "serial"
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  val Serial = new Properties.Long(SERIAL)
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  val INSTANCE = "instance"
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  val Instance = new Properties.String(INSTANCE)
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  /* basic markup */
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  val Empty = Markup("", Nil)
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  val Broken = Markup("broken", Nil)
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  class Markup_String(val name: String, prop: String)
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  {
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    private val Prop = new Properties.String(prop)
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    def apply(s: String): Markup = Markup(name, Prop(s))
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    def unapply(markup: Markup): Option[String] =
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      if (markup.name == name) Prop.unapply(markup.properties) else None
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  }
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  class Markup_Int(val name: String, prop: String)
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  {
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    private val Prop = new Properties.Int(prop)
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    def apply(i: Int): Markup = Markup(name, Prop(i))
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    def unapply(markup: Markup): Option[Int] =
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      if (markup.name == name) Prop.unapply(markup.properties) else None
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  }
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  class Markup_Long(val name: String, prop: String)
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  {
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    private val Prop = new Properties.Long(prop)
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    def apply(i: Long): Markup = Markup(name, Prop(i))
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    def unapply(markup: Markup): Option[Long] =
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      if (markup.name == name) Prop.unapply(markup.properties) else None
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  }
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  /* formal entities */
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  val BINDING = "binding"
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  val ENTITY = "entity"
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  object Entity
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  {
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    val Def = new Properties.Long("def")
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    val Ref = new Properties.Long("ref")
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    def unapply(markup: Markup): Option[(String, String)] =
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      markup match {
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        case Markup(ENTITY, props) =>
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          val kind = Kind.unapply(props).getOrElse("")
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          val name = Name.unapply(props).getOrElse("")
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          Some((kind, name))
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        case _ => None
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      }
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  }
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  /* completion */
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  val COMPLETION = "completion"
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  val NO_COMPLETION = "no_completion"
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  /* position */
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  val LINE = "line"
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  val END_LINE = "line"
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  val OFFSET = "offset"
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  val END_OFFSET = "end_offset"
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  val FILE = "file"
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  val ID = "id"
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  val DEF_LINE = "def_line"
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  val DEF_OFFSET = "def_offset"
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  val DEF_END_OFFSET = "def_end_offset"
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  val DEF_FILE = "def_file"
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  val DEF_ID = "def_id"
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  val POSITION_PROPERTIES = Set(LINE, OFFSET, END_OFFSET, FILE, ID)
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  val POSITION = "position"
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  /* expression */
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  val EXPRESSION = "expression"
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  object Expression
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  {
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    def unapply(markup: Markup): Option[String] =
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      markup match {
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        case Markup(EXPRESSION, Kind(kind)) => Some(kind)
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        case Markup(EXPRESSION, _) => Some("")
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        case _ => None
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      }
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  }
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  /* citation */
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  val CITATION = "citation"
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  val Citation = new Markup_String(CITATION, NAME)
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  /* embedded languages */
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  val Symbols = new Properties.Boolean("symbols")
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  val Antiquotes = new Properties.Boolean("antiquotes")
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  val Delimited = new Properties.Boolean("delimited")
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  val LANGUAGE = "language"
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  object Language
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  {
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    val ML = "ML"
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    val SML = "SML"
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    val PATH = "path"
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    val UNKNOWN = "unknown"
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    def unapply(markup: Markup): Option[(String, Boolean, Boolean, Boolean)] =
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      markup match {
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        case Markup(LANGUAGE, props) =>
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          (props, props, props, props) match {
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            case (Name(name), Symbols(symbols), Antiquotes(antiquotes), Delimited(delimited)) =>
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              Some((name, symbols, antiquotes, delimited))
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            case _ => None
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          }
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        case _ => None
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      }
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  }
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  /* external resources */
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  val PATH = "path"
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  val Path = new Markup_String(PATH, NAME)
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  val URL = "url"
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  val Url = new Markup_String(URL, NAME)
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  val DOC = "doc"
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  val Doc = new Markup_String(DOC, NAME)
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  /* pretty printing */
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  val Consistent = new Properties.Boolean("consistent")
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  val Indent = new Properties.Int("indent")
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  val Width = new Properties.Int("width")
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  object Block
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  {
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    val name = "block"
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    def apply(c: Boolean, i: Int): Markup =
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      Markup(name,
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        (if (c) Consistent(c) else Nil) :::
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        (if (i != 0) Indent(i) else Nil))
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    def unapply(markup: Markup): Option[(Boolean, Int)] =
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      if (markup.name == name) {
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        val c = Consistent.unapply(markup.properties).getOrElse(false)
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        val i = Indent.unapply(markup.properties).getOrElse(0)
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        Some((c, i))
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      }
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      else None
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  }
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  object Break
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  {
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    val name = "break"
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    def apply(w: Int, i: Int): Markup =
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      Markup(name,
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        (if (w != 0) Width(w) else Nil) :::
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        (if (i != 0) Indent(i) else Nil))
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    def unapply(markup: Markup): Option[(Int, Int)] =
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      if (markup.name == name) {
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        val w = Width.unapply(markup.properties).getOrElse(0)
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        val i = Indent.unapply(markup.properties).getOrElse(0)
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        Some((w, i))
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      }
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      else None
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  }
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  val ITEM = "item"
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  val BULLET = "bullet"
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  val SEPARATOR = "separator"
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  /* text properties */
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  val WORDS = "words"
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  val HIDDEN = "hidden"
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  /* misc entities */
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  val CLASS = "class"
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  val TYPE_NAME = "type_name"
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  val FIXED = "fixed"
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  val CASE = "case"
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  val CONSTANT = "constant"
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  val DYNAMIC_FACT = "dynamic_fact"
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  /* inner syntax */
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  val TFREE = "tfree"
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  val TVAR = "tvar"
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  val FREE = "free"
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  val SKOLEM = "skolem"
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  val BOUND = "bound"
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  val VAR = "var"
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  val NUMERAL = "numeral"
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  val LITERAL = "literal"
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  val DELIMITER = "delimiter"
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  val INNER_STRING = "inner_string"
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  val INNER_CARTOUCHE = "inner_cartouche"
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  val INNER_COMMENT = "inner_comment"
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  val TOKEN_RANGE = "token_range"
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  val SORTING = "sorting"
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  val TYPING = "typing"
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  val CLASS_PARAMETER = "class_parameter"
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  val ATTRIBUTE = "attribute"
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  val METHOD = "method"
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  /* antiquotations */
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  val ANTIQUOTED = "antiquoted"
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  val ANTIQUOTE = "antiquote"
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  val ML_ANTIQUOTATION = "ML_antiquotation"
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  val DOCUMENT_ANTIQUOTATION = "document_antiquotation"
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  val DOCUMENT_ANTIQUOTATION_OPTION = "document_antiquotation_option"
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  /* text structure */
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  val PARAGRAPH = "paragraph"
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  val TEXT_FOLD = "text_fold"
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  /* Markdown document structure */
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  val MARKDOWN_PARAGRAPH = "markdown_paragraph"
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  val Markdown_List = new Markup_String("markdown_list", "kind")
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  val Markdown_Bullet = new Markup_Int("markdown_bullet", "depth")
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  /* ML */
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  val ML_KEYWORD1 = "ML_keyword1"
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  val ML_KEYWORD2 = "ML_keyword2"
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  val ML_KEYWORD3 = "ML_keyword3"
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  val ML_DELIMITER = "ML_delimiter"
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  val ML_TVAR = "ML_tvar"
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  val ML_NUMERAL = "ML_numeral"
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  val ML_CHAR = "ML_char"
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  val ML_STRING = "ML_string"
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  val ML_COMMENT = "ML_comment"
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  val SML_STRING = "SML_string"
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  val SML_COMMENT = "SML_comment"
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  val ML_DEF = "ML_def"
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  val ML_OPEN = "ML_open"
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  val ML_STRUCTURE = "ML_structure"
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  val ML_TYPING = "ML_typing"
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  val ML_BREAKPOINT = "ML_breakpoint"
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  /* outer syntax */
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  val COMMAND = "command"
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  val KEYWORD = "keyword"
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  val KEYWORD1 = "keyword1"
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  val KEYWORD2 = "keyword2"
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  val KEYWORD3 = "keyword3"
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  val QUASI_KEYWORD = "quasi_keyword"
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  val IMPROPER = "improper"
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  val OPERATOR = "operator"
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  val STRING = "string"
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  val ALT_STRING = "alt_string"
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  val VERBATIM = "verbatim"
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  val CARTOUCHE = "cartouche"
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  val COMMENT = "comment"
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  /* timing */
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  val Elapsed = new Properties.Double("elapsed")
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  val CPU = new Properties.Double("cpu")
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  val GC = new Properties.Double("gc")
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  object Timing_Properties
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  {
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    def apply(timing: isabelle.Timing): Properties.T =
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      Elapsed(timing.elapsed.seconds) ::: CPU(timing.cpu.seconds) ::: GC(timing.gc.seconds)
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    def unapply(props: Properties.T): Option[isabelle.Timing] =
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      (props, props, props) match {
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        case (Elapsed(elapsed), CPU(cpu), GC(gc)) =>
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          Some(new isabelle.Timing(Time.seconds(elapsed), Time.seconds(cpu), Time.seconds(gc)))
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        case _ => None
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      }
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  }
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  val TIMING = "timing"
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  object Timing
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  {
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    def apply(timing: isabelle.Timing): Markup = Markup(TIMING, Timing_Properties(timing))
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    def unapply(markup: Markup): Option[isabelle.Timing] =
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      markup match {
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        case Markup(TIMING, Timing_Properties(timing)) => Some(timing)
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        case _ => None
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      }
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  }
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  /* process result */
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  val Return_Code = new Properties.Int("return_code")
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  object Process_Result
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  {
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    def apply(result: Process_Result): Properties.T =
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      Return_Code(result.rc) :::
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        (if (result.timing.is_zero) Nil else Timing_Properties(result.timing))
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    def unapply(props: Properties.T): Option[Process_Result] =
wenzelm@65317
   386
      props match {
wenzelm@65317
   387
        case Return_Code(rc) =>
wenzelm@65317
   388
          val timing = Timing_Properties.unapply(props).getOrElse(isabelle.Timing.zero)
wenzelm@65317
   389
          Some(isabelle.Process_Result(rc, timing = timing))
wenzelm@65317
   390
        case _ => None
wenzelm@65317
   391
      }
wenzelm@65317
   392
  }
wenzelm@65317
   393
wenzelm@65317
   394
wenzelm@63474
   395
  /* command indentation */
wenzelm@63474
   396
wenzelm@63474
   397
  object Command_Indent
wenzelm@63474
   398
  {
wenzelm@63474
   399
    val name = "command_indent"
wenzelm@63474
   400
    def unapply(markup: Markup): Option[Int] =
wenzelm@63474
   401
      if (markup.name == name) Indent.unapply(markup.properties) else None
wenzelm@63474
   402
  }
wenzelm@63474
   403
wenzelm@63474
   404
wenzelm@63474
   405
  /* goals */
wenzelm@50201
   406
wenzelm@50543
   407
  val GOAL = "goal"
wenzelm@50201
   408
  val SUBGOAL = "subgoal"
wenzelm@50215
   409
wenzelm@50450
   410
wenzelm@50201
   411
  /* command status */
wenzelm@50201
   412
wenzelm@50201
   413
  val TASK = "task"
wenzelm@50201
   414
wenzelm@50201
   415
  val ACCEPTED = "accepted"
wenzelm@50201
   416
  val FORKED = "forked"
wenzelm@50201
   417
  val JOINED = "joined"
wenzelm@50201
   418
  val RUNNING = "running"
wenzelm@50201
   419
  val FINISHED = "finished"
wenzelm@50201
   420
  val FAILED = "failed"
wenzelm@66382
   421
  val CONSOLIDATED = "consolidated"
wenzelm@50201
   422
wenzelm@50201
   423
wenzelm@50201
   424
  /* interactive documents */
wenzelm@50201
   425
wenzelm@50201
   426
  val VERSION = "version"
wenzelm@50201
   427
  val ASSIGN = "assign"
wenzelm@50201
   428
wenzelm@50201
   429
wenzelm@50201
   430
  /* prover process */
wenzelm@50201
   431
wenzelm@50201
   432
  val PROVER_COMMAND = "prover_command"
wenzelm@50201
   433
  val PROVER_ARG = "prover_arg"
wenzelm@50201
   434
wenzelm@50201
   435
wenzelm@50201
   436
  /* messages */
wenzelm@50201
   437
wenzelm@50201
   438
  val INIT = "init"
wenzelm@50201
   439
  val STATUS = "status"
wenzelm@50201
   440
  val REPORT = "report"
wenzelm@50500
   441
  val RESULT = "result"
wenzelm@50201
   442
  val WRITELN = "writeln"
wenzelm@59184
   443
  val STATE = "state"
wenzelm@59184
   444
  val INFORMATION = "information"
wenzelm@50201
   445
  val TRACING = "tracing"
wenzelm@50201
   446
  val WARNING = "warning"
wenzelm@59203
   447
  val LEGACY = "legacy"
wenzelm@50201
   448
  val ERROR = "error"
wenzelm@50201
   449
  val PROTOCOL = "protocol"
wenzelm@50201
   450
  val SYSTEM = "system"
wenzelm@50201
   451
  val STDOUT = "stdout"
wenzelm@50201
   452
  val STDERR = "stderr"
wenzelm@50201
   453
  val EXIT = "exit"
wenzelm@50201
   454
wenzelm@50201
   455
  val WRITELN_MESSAGE = "writeln_message"
wenzelm@59184
   456
  val STATE_MESSAGE = "state_message"
wenzelm@59184
   457
  val INFORMATION_MESSAGE = "information_message"
wenzelm@50201
   458
  val TRACING_MESSAGE = "tracing_message"
wenzelm@50201
   459
  val WARNING_MESSAGE = "warning_message"
wenzelm@59203
   460
  val LEGACY_MESSAGE = "legacy_message"
wenzelm@50201
   461
  val ERROR_MESSAGE = "error_message"
wenzelm@50201
   462
wenzelm@59184
   463
  val messages = Map(
wenzelm@59184
   464
    WRITELN -> WRITELN_MESSAGE,
wenzelm@59184
   465
    STATE -> STATE_MESSAGE,
wenzelm@59184
   466
    INFORMATION -> INFORMATION_MESSAGE,
wenzelm@59184
   467
    TRACING -> TRACING_MESSAGE,
wenzelm@59184
   468
    WARNING -> WARNING_MESSAGE,
wenzelm@59203
   469
    LEGACY -> LEGACY_MESSAGE,
wenzelm@59184
   470
    ERROR -> ERROR_MESSAGE)
wenzelm@59184
   471
wenzelm@52876
   472
  val message: String => String = messages.withDefault((s: String) => s)
wenzelm@50201
   473
wenzelm@50201
   474
  val NO_REPORT = "no_report"
wenzelm@50201
   475
wenzelm@50201
   476
  val BAD = "bad"
wenzelm@50201
   477
wenzelm@50500
   478
  val INTENSIFY = "intensify"
wenzelm@50500
   479
wenzelm@50500
   480
wenzelm@50500
   481
  /* active areas */
wenzelm@50500
   482
wenzelm@50715
   483
  val BROWSER = "browser"
wenzelm@50500
   484
  val GRAPHVIEW = "graphview"
wenzelm@50500
   485
wenzelm@50500
   486
  val SENDBACK = "sendback"
wenzelm@50500
   487
  val PADDING = "padding"
wenzelm@52697
   488
  val PADDING_LINE = (PADDING, "line")
wenzelm@52697
   489
  val PADDING_COMMAND = (PADDING, "command")
wenzelm@50500
   490
wenzelm@50500
   491
  val DIALOG = "dialog"
wenzelm@50503
   492
  val Result = new Properties.String(RESULT)
wenzelm@50500
   493
wenzelm@63681
   494
  val JEDIT_ACTION = "jedit_action"
wenzelm@63681
   495
wenzelm@50201
   496
wenzelm@50201
   497
  /* protocol message functions */
wenzelm@50201
   498
wenzelm@50201
   499
  val FUNCTION = "function"
wenzelm@50201
   500
  val Function = new Properties.String(FUNCTION)
wenzelm@50201
   501
wenzelm@66942
   502
  val COMMAND_TIMING: Properties.Entry = (FUNCTION, "command_timing")
wenzelm@66942
   503
  val THEORY_TIMING: Properties.Entry = (FUNCTION, "theory_timing")
wenzelm@66942
   504
wenzelm@52563
   505
  val Assign_Update: Properties.T = List((FUNCTION, "assign_update"))
wenzelm@50201
   506
  val Removed_Versions: Properties.T = List((FUNCTION, "removed_versions"))
wenzelm@50201
   507
wenzelm@52111
   508
  object Protocol_Handler
wenzelm@52111
   509
  {
wenzelm@52111
   510
    def unapply(props: Properties.T): Option[(String)] =
wenzelm@52111
   511
      props match {
wenzelm@52111
   512
        case List((FUNCTION, "protocol_handler"), (NAME, name)) => Some(name)
wenzelm@52111
   513
        case _ => None
wenzelm@52111
   514
      }
wenzelm@52111
   515
  }
wenzelm@52111
   516
wenzelm@52111
   517
  val INVOKE_SCALA = "invoke_scala"
wenzelm@50201
   518
  object Invoke_Scala
wenzelm@50201
   519
  {
wenzelm@50201
   520
    def unapply(props: Properties.T): Option[(String, String)] =
wenzelm@50201
   521
      props match {
wenzelm@52111
   522
        case List((FUNCTION, INVOKE_SCALA), (NAME, name), (ID, id)) => Some((name, id))
wenzelm@50201
   523
        case _ => None
wenzelm@50201
   524
      }
wenzelm@50201
   525
  }
wenzelm@52111
   526
wenzelm@52111
   527
  val CANCEL_SCALA = "cancel_scala"
wenzelm@50201
   528
  object Cancel_Scala
wenzelm@50201
   529
  {
wenzelm@50201
   530
    def unapply(props: Properties.T): Option[String] =
wenzelm@50201
   531
      props match {
wenzelm@52111
   532
        case List((FUNCTION, CANCEL_SCALA), (ID, id)) => Some(id)
wenzelm@50201
   533
        case _ => None
wenzelm@50201
   534
      }
wenzelm@50201
   535
  }
wenzelm@50255
   536
wenzelm@50255
   537
  object ML_Statistics
wenzelm@50255
   538
  {
wenzelm@50255
   539
    def unapply(props: Properties.T): Option[Properties.T] =
wenzelm@50255
   540
      props match {
wenzelm@66872
   541
        case (FUNCTION, "ML_statistics") :: props => Some(props)
wenzelm@50255
   542
        case _ => None
wenzelm@50255
   543
      }
wenzelm@50255
   544
  }
wenzelm@50975
   545
wenzelm@50975
   546
  object Task_Statistics
wenzelm@50975
   547
  {
wenzelm@50975
   548
    def unapply(props: Properties.T): Option[Properties.T] =
wenzelm@50975
   549
      props match {
wenzelm@66872
   550
        case (FUNCTION, "task_statistics") :: props => Some(props)
wenzelm@50975
   551
        case _ => None
wenzelm@50975
   552
      }
wenzelm@50975
   553
  }
lars@55316
   554
wenzelm@59367
   555
  val LOADING_THEORY = "loading_theory"
wenzelm@56616
   556
  object Loading_Theory
wenzelm@56616
   557
  {
wenzelm@56616
   558
    def unapply(props: Properties.T): Option[String] =
wenzelm@56616
   559
      props match {
wenzelm@59367
   560
        case List((FUNCTION, LOADING_THEORY), (NAME, name)) => Some(name)
wenzelm@56616
   561
        case _ => None
wenzelm@56616
   562
      }
wenzelm@56616
   563
  }
wenzelm@56616
   564
wenzelm@65313
   565
  val BUILD_SESSION_FINISHED = "build_session_finished"
wenzelm@65313
   566
  val Build_Session_Finished: Properties.T = List((FUNCTION, BUILD_SESSION_FINISHED))
wenzelm@56616
   567
wenzelm@56864
   568
  val PRINT_OPERATIONS = "print_operations"
wenzelm@56864
   569
wenzelm@55555
   570
wenzelm@60830
   571
  /* debugger output */
wenzelm@60830
   572
wenzelm@60842
   573
  val DEBUGGER_STATE = "debugger_state"
wenzelm@60842
   574
  object Debugger_State
wenzelm@60842
   575
  {
wenzelm@60842
   576
    def unapply(props: Properties.T): Option[String] =
wenzelm@60842
   577
      props match {
wenzelm@60842
   578
        case List((FUNCTION, DEBUGGER_STATE), (NAME, name)) => Some(name)
wenzelm@60842
   579
        case _ => None
wenzelm@60842
   580
      }
wenzelm@60842
   581
  }
wenzelm@60842
   582
wenzelm@60830
   583
  val DEBUGGER_OUTPUT = "debugger_output"
wenzelm@60830
   584
  object Debugger_Output
wenzelm@60830
   585
  {
wenzelm@60834
   586
    def unapply(props: Properties.T): Option[String] =
wenzelm@60830
   587
      props match {
wenzelm@60834
   588
        case List((FUNCTION, DEBUGGER_OUTPUT), (NAME, name)) => Some(name)
wenzelm@60830
   589
        case _ => None
wenzelm@60830
   590
      }
wenzelm@60830
   591
  }
wenzelm@60830
   592
wenzelm@60830
   593
lars@55316
   594
  /* simplifier trace */
lars@55316
   595
wenzelm@57597
   596
  val SIMP_TRACE_PANEL = "simp_trace_panel"
lars@55316
   597
wenzelm@55555
   598
  val SIMP_TRACE_LOG = "simp_trace_log"
wenzelm@55555
   599
  val SIMP_TRACE_STEP = "simp_trace_step"
wenzelm@55555
   600
  val SIMP_TRACE_RECURSE = "simp_trace_recurse"
wenzelm@55555
   601
  val SIMP_TRACE_HINT = "simp_trace_hint"
wenzelm@55555
   602
  val SIMP_TRACE_IGNORE = "simp_trace_ignore"
lars@55316
   603
wenzelm@55555
   604
  val SIMP_TRACE_CANCEL = "simp_trace_cancel"
wenzelm@55555
   605
  object Simp_Trace_Cancel
lars@55316
   606
  {
lars@55316
   607
    def unapply(props: Properties.T): Option[Long] =
lars@55316
   608
      props match {
wenzelm@55555
   609
        case (FUNCTION, SIMP_TRACE_CANCEL) :: Serial(i) => Some(i)
lars@55316
   610
        case _ => None
lars@55316
   611
      }
lars@55316
   612
  }
wenzelm@65335
   613
wenzelm@65335
   614
wenzelm@65335
   615
  /* XML data representation */
wenzelm@65335
   616
wenzelm@65335
   617
  def encode: XML.Encode.T[Markup] = (markup: Markup) =>
wenzelm@65335
   618
  {
wenzelm@65335
   619
    import XML.Encode._
wenzelm@65335
   620
    pair(string, properties)((markup.name, markup.properties))
wenzelm@65335
   621
  }
wenzelm@65335
   622
wenzelm@65335
   623
  def decode: XML.Decode.T[Markup] = (body: XML.Body) =>
wenzelm@65335
   624
  {
wenzelm@65335
   625
    import XML.Decode._
wenzelm@65335
   626
    val (name, props) = pair(string, properties)(body)
wenzelm@65335
   627
    Markup(name, props)
wenzelm@65335
   628
  }
wenzelm@45666
   629
}
wenzelm@43721
   630
wenzelm@43721
   631
wenzelm@45666
   632
sealed case class Markup(name: String, properties: Properties.T)
wenzelm@59709
   633
{
wenzelm@59709
   634
  def markup(s: String): String =
wenzelm@59709
   635
    YXML.string_of_tree(XML.Elem(this, List(XML.Text(s))))
wenzelm@64358
   636
wenzelm@64358
   637
  def update_properties(more_props: Properties.T): Markup =
wenzelm@64358
   638
    if (more_props.isEmpty) this
wenzelm@64358
   639
    else Markup(name, (more_props :\ properties) { case (p, ps) => Properties.put(ps, p) })
wenzelm@65753
   640
wenzelm@65753
   641
  def + (entry: Properties.Entry): Markup =
wenzelm@65753
   642
    Markup(name, Properties.put(properties, entry))
wenzelm@59709
   643
}