src/Tools/jEdit/src/prover/Command.scala
author wenzelm
Sun, 19 Oct 2008 16:51:55 +0200
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child 34388 23b8351ecbbe
permissions -rw-r--r--
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package isabelle.prover
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import isabelle.proofdocument.Token
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import isabelle.{ YXML, XML }
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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 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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  var phase = Phase.UNPROCESSED
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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 document = 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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  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.isComment)
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      i = i.previous
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    i.stop
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  }  	
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}