src/Tools/jEdit/src/prover/Command.scala
author immler@in.tum.de
Sun, 07 Dec 2008 19:55:01 +0100
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package isabelle.prover
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import isabelle.proofdocument.Token
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import isabelle.jedit.Plugin
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import isabelle.{ YXML, XML }
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import sidekick.{SideKickParsedData}
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import sidekick.enhanced.SourceAsset
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import javax.swing.text.Position
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import javax.swing.tree.DefaultMutableTreeNode
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object Command {
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  object Phase extends Enumeration {
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    val UNPROCESSED = Value("UNPROCESSED")
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    val FINISHED = Value("FINISHED")
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    val REMOVE = Value("REMOVE")
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    val REMOVED = Value("REMOVED")
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    val FAILED = Value("FAILED")
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  }
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  private var nextId : Long = 0
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  def generateId : Long = {
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    nextId = nextId + 1
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    return nextId
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  }
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  def idFromString(id : String) = Long.unbox(java.lang.Long.valueOf(id, 36))
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}
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class Command(val document : Document, val first : Token[Command], val last : Token[Command]) {
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  import Command._
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  {
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    var t = first
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    while(t != null) {
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      t.command = this
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      t = if (t == last) null else t.next
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    }
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  }
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  val id : Long = generateId
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  private var p = Phase.UNPROCESSED
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  def phase = p
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  def phase_=(p_new : Phase.Value) = {
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    if(p_new == Phase.UNPROCESSED){
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      //delete inner syntax
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      val children = root_node.children
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      while (children.hasMoreElements){
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        val child = children.nextElement.asInstanceOf[DefaultMutableTreeNode]
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        child.removeAllChildren
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      }
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    }
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    p = p_new
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  }
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  var results = Nil : List[XML.Tree]
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  def idString = java.lang.Long.toString(id, 36)
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  def results_xml = XML.document(results match {
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                                case Nil => XML.Elem("message", List(), List())
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                                case List(elem) => elem
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                                case _ =>
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                                  XML.Elem("messages", List(), List(results.first,
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                                                                    results.last))
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                              }, "style")
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  def addResult(tree : XML.Tree) {
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    results = results ::: List(tree)
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  }
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  val root_node = {
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    val content = document.getContent(this)
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    val ra = new RelativeAsset(this, 0, stop - start, "Command", content)
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    new DefaultMutableTreeNode(ra)
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  }
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  // does cand fit into node?
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  private def fitting(cand : DefaultMutableTreeNode, node : DefaultMutableTreeNode) : boolean = {
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    val node_asset = node.getUserObject.asInstanceOf[RelativeAsset]
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    val n_start = node_asset.rel_start
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    val n_end = node_asset.rel_end
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    val cand_asset = cand.getUserObject.asInstanceOf[RelativeAsset]
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    val c_start = cand_asset.rel_start
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    val c_end = cand_asset.rel_end
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    return c_start >= n_start && c_end <= n_end
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  }
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  private def insert_node(new_node : DefaultMutableTreeNode, node : DefaultMutableTreeNode) {
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    assert(fitting(new_node, node))
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    val children = node.children
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    while (children.hasMoreElements){
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      val child = children.nextElement.asInstanceOf[DefaultMutableTreeNode]
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      if(fitting(new_node, child)) {
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        insert_node(new_node, child)
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      }
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    }
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    if(new_node.getParent == null){
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      while(children.hasMoreElements){
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        val child = children.nextElement.asInstanceOf[DefaultMutableTreeNode]
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        if(fitting(child, new_node)) {
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          node.remove(child.asInstanceOf[DefaultMutableTreeNode])
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          new_node.add(child)
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        }
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      }
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      node.add(new_node)
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    }
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  }
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  def add_node(node : DefaultMutableTreeNode) = insert_node(node, root_node)
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  def node_from(kind : String, begin : Int, end : Int) : DefaultMutableTreeNode = {
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    val markup_content = /*content.substring(begin, end)*/
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    ""
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    val asset = new RelativeAsset(this, begin, end, kind, markup_content)
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    new DefaultMutableTreeNode(asset)
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  }
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  def content = document.getContent(this)
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  def next = if (last.next != null) last.next.command else null
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  def previous = if (first.previous != null) first.previous.command else null
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  def start = first start
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  def stop = last stop
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  def properStart = start
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  def properStop = {
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    var i = last
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    while (i != first && i.kind.equals(Token.Kind.COMMENT))
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      i = i.previous
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    i.stop
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  }  	
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}