src/Tools/jEdit/src/proofdocument/command.scala

+/*
+ * Prover commands with semantic state
+ *
+ * @author Johannes Hölzl, TU Munich
+ * @author Fabian Immler, TU Munich
+ */
+
+package isabelle.prover
+
+
+import scala.actors.Actor, Actor._
+
+import scala.collection.mutable
+
+import isabelle.proofdocument.{Token, ProofDocument}
+import isabelle.jedit.{Isabelle, Plugin}
+import isabelle.XML
+
+
+trait Accumulator extends Actor
+{
+  start() // start actor
+
+  protected var _state: State
+  def state = _state
+
+  override def act() {
+    loop {
+      react {
+        case (prover: Prover, message: XML.Tree) => _state = _state.+(prover, message)
+        case bad => System.err.println("prover: ignoring bad message " + bad)
+      }
+    }
+  }
+}
+
+
+object Command
+{
+  object Status extends Enumeration
+  {
+    val UNPROCESSED = Value("UNPROCESSED")
+    val FINISHED = Value("FINISHED")
+    val FAILED = Value("FAILED")
+  }
+
+  case class HighlightInfo(highlight: String) { override def toString = highlight }
+  case class TypeInfo(ty: String)
+  case class RefInfo(file: Option[String], line: Option[Int],
+    command_id: Option[String], offset: Option[Int])
+}
+
+
+class Command(
+    val tokens: List[Token],
+    val starts: Map[Token, Int]) extends Accumulator
+{
+  require(!tokens.isEmpty)
+
+  val id = Isabelle.system.id()
+  override def hashCode = id.hashCode
+
+
+  /* content */
+
+  override def toString = name
+
+  val name = tokens.head.content
+  val content: String = Token.string_from_tokens(tokens, starts)
+  def content(i: Int, j: Int): String = content.substring(i, j)
+  val symbol_index = new Symbol.Index(content)
+
+  def start(doc: ProofDocument) = doc.token_start(tokens.first)
+  def stop(doc: ProofDocument) = doc.token_start(tokens.last) + tokens.last.length
+
+  def contains(p: Token) = tokens.contains(p)
+
+  protected override var _state = new State(this)
+
+
+  /* markup */
+
+  lazy val empty_markup = new Markup_Text(Nil, content)
+
+  def markup_node(begin: Int, end: Int, info: Any): Markup_Tree =
+  {
+    val start = symbol_index.decode(begin)
+    val stop = symbol_index.decode(end)
+    new Markup_Tree(new Markup_Node(start, stop, info), Nil)
+  }
+
+
+  /* results, markup, ... */
+
+  private val empty_cmd_state = new Command_State(this)
+  private def cmd_state(doc: ProofDocument) =
+    doc.states.getOrElse(this, empty_cmd_state)
+
+  def status(doc: ProofDocument) = cmd_state(doc).state.status
+  def results(doc: ProofDocument) = cmd_state(doc).results
+  def markup_root(doc: ProofDocument) = cmd_state(doc).markup_root
+  def highlight(doc: ProofDocument) = cmd_state(doc).highlight
+  def type_at(doc: ProofDocument, offset: Int) = cmd_state(doc).type_at(offset)
+  def ref_at(doc: ProofDocument, offset: Int) = cmd_state(doc).ref_at(offset)
+}
+
+
+class Command_State(val command: Command) extends Accumulator
+{
+  protected override var _state = new State(command)
+
+  def results: List[XML.Tree] =
+    command.state.results ::: state.results
+
+  def markup_root: Markup_Text =
+    (command.state.markup_root /: state.markup_root.markup)(_ + _)
+
+  def type_at(pos: Int): Option[String] = state.type_at(pos)
+
+  def ref_at(pos: Int): Option[Markup_Node] = state.ref_at(pos)
+
+  def highlight: Markup_Text =
+    (command.state.highlight /: state.highlight.markup)(_ + _)
+}