wenzelm@36714
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/* Title: Pure/System/session.scala
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wenzelm@36714
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Author: Makarius
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wenzelm@38477
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Options: :folding=explicit:collapseFolds=1:
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wenzelm@36714
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wenzelm@44528
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Main Isabelle/Scala session, potentially with running prover process.
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wenzelm@36714
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*/
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wenzelm@34780
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wenzelm@34874
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package isabelle
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wenzelm@34780
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wenzelm@44400
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import java.lang.System
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wenzelm@34780
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wenzelm@34823
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import scala.actors.TIMEOUT
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wenzelm@38482
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import scala.actors.Actor
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wenzelm@34780
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import scala.actors.Actor._
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wenzelm@34780
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wenzelm@34818
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wenzelm@34794
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object Session
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wenzelm@34794
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{
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wenzelm@44598
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/* file store */
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wenzelm@44522
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wenzelm@44522
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abstract class File_Store
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wenzelm@44522
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{
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wenzelm@45042
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def append(master_dir: String, path: Path): String
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wenzelm@45042
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def require(file: String): Unit
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wenzelm@44522
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}
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wenzelm@44522
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wenzelm@44522
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wenzelm@34816
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/* events */
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wenzelm@34816
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wenzelm@44598
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//{{{
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wenzelm@34794
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case object Global_Settings
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wenzelm@38117
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case object Perspective
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wenzelm@39107
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case object Assignment
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wenzelm@38642
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case class Commands_Changed(set: Set[Command])
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wenzelm@39920
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wenzelm@39920
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sealed abstract class Phase
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wenzelm@39920
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case object Inactive extends Phase
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wenzelm@39966
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case object Startup extends Phase // transient
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wenzelm@39966
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case object Failed extends Phase
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wenzelm@39920
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case object Ready extends Phase
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wenzelm@39966
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case object Shutdown extends Phase // transient
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wenzelm@44598
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//}}}
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wenzelm@34794
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}
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wenzelm@34794
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wenzelm@34780
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wenzelm@44532
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class Session(val file_store: Session.File_Store)
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wenzelm@34780
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{
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wenzelm@38117
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/* real time parameters */ // FIXME properties or settings (!?)
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wenzelm@38117
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wenzelm@44598
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val input_delay = Time.seconds(0.3) // user input (e.g. text edits, cursor movement)
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wenzelm@44598
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val output_delay = Time.seconds(0.1) // prover output (markup, common messages)
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wenzelm@44598
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val update_delay = Time.seconds(0.5) // GUI layout updates
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wenzelm@38117
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wenzelm@38117
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wenzelm@34812
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/* pervasive event buses */
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wenzelm@34812
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wenzelm@34812
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val global_settings = new Event_Bus[Session.Global_Settings.type]
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wenzelm@38117
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val perspective = new Event_Bus[Session.Perspective.type]
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wenzelm@39107
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val assignments = new Event_Bus[Session.Assignment.type]
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wenzelm@44598
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val commands_changed = new Event_Bus[Session.Commands_Changed]
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wenzelm@44598
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val phase_changed = new Event_Bus[Session.Phase]
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wenzelm@44603
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val raw_messages = new Event_Bus[Isabelle_Process.Message]
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wenzelm@44598
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wenzelm@34812
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wenzelm@34812
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wenzelm@39099
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/** buffered command changes (delay_first discipline) **/
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wenzelm@39099
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wenzelm@44598
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//{{{
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wenzelm@39099
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private case object Stop
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wenzelm@39099
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wenzelm@39836
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private val (_, command_change_buffer) =
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wenzelm@39836
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Simple_Thread.actor("command_change_buffer", daemon = true)
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wenzelm@39099
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{
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wenzelm@39099
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var changed: Set[Command] = Set()
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wenzelm@39099
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var flush_time: Option[Long] = None
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wenzelm@39099
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wenzelm@39099
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def flush_timeout: Long =
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wenzelm@39099
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flush_time match {
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wenzelm@39099
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case None => 5000L
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wenzelm@41119
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case Some(time) => (time - System.currentTimeMillis()) max 0
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wenzelm@39099
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}
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wenzelm@39099
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wenzelm@39099
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def flush()
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wenzelm@39099
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{
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wenzelm@39099
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if (!changed.isEmpty) commands_changed.event(Session.Commands_Changed(changed))
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wenzelm@39099
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changed = Set()
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wenzelm@39099
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flush_time = None
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wenzelm@39099
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}
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wenzelm@39099
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wenzelm@39099
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def invoke()
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wenzelm@39099
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{
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wenzelm@41119
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val now = System.currentTimeMillis()
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wenzelm@39099
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flush_time match {
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wenzelm@41119
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case None => flush_time = Some(now + output_delay.ms)
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wenzelm@39099
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case Some(time) => if (now >= time) flush()
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wenzelm@39099
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}
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wenzelm@39099
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}
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wenzelm@39099
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wenzelm@39099
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var finished = false
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wenzelm@39099
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while (!finished) {
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wenzelm@39099
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receiveWithin(flush_timeout) {
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wenzelm@39099
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case command: Command => changed += command; invoke()
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wenzelm@39099
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case TIMEOUT => flush()
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wenzelm@39920
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case Stop => finished = true; reply(())
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wenzelm@39099
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case bad => System.err.println("command_change_buffer: ignoring bad message " + bad)
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wenzelm@39099
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}
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wenzelm@39099
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}
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wenzelm@39099
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}
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wenzelm@39099
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//}}}
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wenzelm@39099
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wenzelm@39099
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wenzelm@39099
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wenzelm@39099
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/** main protocol actor **/
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wenzelm@34812
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wenzelm@44528
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/* global state */
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wenzelm@44521
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wenzelm@44598
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@volatile var verbose: Boolean = false
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wenzelm@44598
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wenzelm@44598
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@volatile private var loaded_theories: Set[String] = Set()
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wenzelm@44548
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wenzelm@44569
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@volatile private var syntax = new Outer_Syntax
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wenzelm@38863
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def current_syntax(): Outer_Syntax = syntax
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wenzelm@34812
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wenzelm@39916
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@volatile private var reverse_syslog = List[XML.Elem]()
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wenzelm@39919
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def syslog(): String = reverse_syslog.reverse.map(msg => XML.content(msg).mkString).mkString("\n")
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wenzelm@39916
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wenzelm@39920
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@volatile private var _phase: Session.Phase = Session.Inactive
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wenzelm@39923
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private def phase_=(new_phase: Session.Phase)
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wenzelm@39920
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{
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wenzelm@39920
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_phase = new_phase
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wenzelm@39966
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phase_changed.event(new_phase)
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wenzelm@39920
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}
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wenzelm@44598
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def phase = _phase
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wenzelm@44424
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def is_ready: Boolean = phase == Session.Ready
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wenzelm@39920
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wenzelm@39099
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private val global_state = new Volatile(Document.State.init)
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wenzelm@44601
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def current_state(): Document.State = global_state()
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wenzelm@34819
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wenzelm@44598
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def snapshot(name: String, pending_edits: List[Text.Edit]): Document.Snapshot =
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wenzelm@44601
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global_state().snapshot(name, pending_edits)
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wenzelm@44598
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wenzelm@44528
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wenzelm@44528
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/* theory files */
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wenzelm@44528
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wenzelm@44528
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val thy_load = new Thy_Load
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wenzelm@44528
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{
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wenzelm@44548
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override def is_loaded(name: String): Boolean =
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wenzelm@44548
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loaded_theories.contains(name)
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wenzelm@44548
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wenzelm@45038
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override def check_thy(dir: Path, name: String): (String, Thy_Header) =
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wenzelm@44528
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{
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wenzelm@44532
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val file = Isabelle_System.platform_file(dir + Thy_Header.thy_path(name))
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wenzelm@44529
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if (!file.exists || !file.isFile) error("No such file: " + quote(file.toString))
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wenzelm@44528
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val text = Standard_System.read_file(file)
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wenzelm@44532
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val header = Thy_Header.read(text)
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wenzelm@44528
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(text, header)
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wenzelm@44528
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}
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wenzelm@44528
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}
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wenzelm@44528
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wenzelm@44528
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val thy_info = new Thy_Info(thy_load)
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wenzelm@44528
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wenzelm@45330
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def header_edit(name: String, master_dir: String,
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wenzelm@45330
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header: Document.Node_Header): Document.Edit_Text =
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wenzelm@45330
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{
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wenzelm@45330
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def norm_import(s: String): String =
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wenzelm@45330
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{
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wenzelm@45330
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val thy_name = Thy_Header.base_name(s)
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wenzelm@45330
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if (thy_load.is_loaded(thy_name)) thy_name
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wenzelm@45330
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else file_store.append(master_dir, Thy_Header.thy_path(Path.explode(s)))
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wenzelm@45330
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}
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wenzelm@45330
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def norm_use(s: String): String =
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wenzelm@45330
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file_store.append(master_dir, Path.explode(s))
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wenzelm@45330
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wenzelm@45330
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val header1: Document.Node_Header =
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wenzelm@45330
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header match {
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wenzelm@45330
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case Exn.Res(Thy_Header(thy_name, _, _))
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wenzelm@45330
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if (thy_load.is_loaded(thy_name)) =>
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wenzelm@45330
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Exn.Exn(ERROR("Attempt to update loaded theory " + quote(thy_name)))
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wenzelm@45330
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case _ => Document.Node.norm_header(norm_import, norm_use, header)
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wenzelm@45330
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}
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wenzelm@45330
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(name, Document.Node.Header(header1))
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wenzelm@45330
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}
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wenzelm@45330
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wenzelm@44528
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wenzelm@44528
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/* actor messages */
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wenzelm@44528
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wenzelm@44598
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private case class Start(timeout: Time, args: List[String])
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wenzelm@44598
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private case object Interrupt
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wenzelm@45292
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private case class Init_Node(name: String, master_dir: String,
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wenzelm@45292
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header: Document.Node_Header, perspective: Text.Perspective, text: String)
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wenzelm@45292
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private case class Edit_Node(name: String, master_dir: String,
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wenzelm@45292
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header: Document.Node_Header, perspective: Text.Perspective, edits: List[Text.Edit])
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wenzelm@44604
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private case class Change_Node(
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wenzelm@44604
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name: String,
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wenzelm@44604
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doc_edits: List[Document.Edit_Command],
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wenzelm@44604
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previous: Document.Version,
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wenzelm@44604
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version: Document.Version)
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wenzelm@41782
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wenzelm@39836
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private val (_, session_actor) = Simple_Thread.actor("session_actor", daemon = true)
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wenzelm@38898
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{
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wenzelm@44525
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val this_actor = self
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wenzelm@44526
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var prover: Option[Isabelle_Process with Isar_Document] = None
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wenzelm@34780
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wenzelm@34812
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wenzelm@45324
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/* perspective */
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wenzelm@45324
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wenzelm@45324
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def update_perspective(name: String, text_perspective: Text.Perspective)
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wenzelm@45324
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{
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wenzelm@45396
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val previous = global_state().tip_version
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wenzelm@45324
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val (perspective, version) = Thy_Syntax.edit_perspective(previous, name, text_perspective)
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wenzelm@45324
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wenzelm@45324
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val text_edits: List[Document.Edit_Text] =
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wenzelm@45324
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List((name, Document.Node.Perspective(text_perspective)))
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wenzelm@45324
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val change =
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wenzelm@45324
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global_state.change_yield(
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wenzelm@45334
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_.continue_history(Future.value(previous), text_edits, Future.value(version)))
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wenzelm@45324
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wenzelm@45398
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val assignment = global_state().the_assignment(previous).check_finished
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wenzelm@45400
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global_state.change(_.define_version(version, assignment))
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wenzelm@45397
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global_state.change_yield(_.assign(version.id, Document.no_assign))
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wenzelm@45324
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wenzelm@45324
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prover.get.update_perspective(previous.id, version.id, name, perspective)
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wenzelm@45324
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}
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wenzelm@45324
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wenzelm@45324
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wenzelm@44598
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/* incoming edits */
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wenzelm@44598
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wenzelm@45055
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def handle_edits(name: String, master_dir: String,
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wenzelm@45291
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header: Document.Node_Header, edits: List[Document.Node.Edit[Text.Edit, Text.Perspective]])
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wenzelm@44598
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//{{{
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wenzelm@44598
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{
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wenzelm@44598
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val syntax = current_syntax()
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wenzelm@44601
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val previous = global_state().history.tip.version
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wenzelm@45058
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wenzelm@45330
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val text_edits = header_edit(name, master_dir, header) :: edits.map(edit => (name, edit))
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wenzelm@45058
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val result = Future.fork { Thy_Syntax.text_edits(syntax, previous.join, text_edits) }
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wenzelm@44604
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val change =
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wenzelm@45334
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global_state.change_yield(_.continue_history(previous, text_edits, result.map(_._2)))
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wenzelm@44598
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wenzelm@44604
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result.map {
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wenzelm@45028
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241 |
case (doc_edits, _) =>
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wenzelm@44604
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assignments.await { global_state().is_assigned(previous.get_finished) }
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wenzelm@45028
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243 |
this_actor ! Change_Node(name, doc_edits, previous.join, change.version.join)
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wenzelm@44604
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244 |
}
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wenzelm@44598
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}
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wenzelm@44598
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246 |
//}}}
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wenzelm@44598
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247 |
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wenzelm@44598
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248 |
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wenzelm@45324
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249 |
/* exec state assignment */
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wenzelm@45324
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250 |
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wenzelm@45397
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251 |
def handle_assign(id: Document.Version_ID, assign: Document.Assign)
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wenzelm@45324
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//{{{
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wenzelm@45324
|
253 |
{
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wenzelm@45397
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254 |
val cmds = global_state.change_yield(_.assign(id, assign))
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wenzelm@45324
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255 |
for (cmd <- cmds) command_change_buffer ! cmd
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wenzelm@45324
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256 |
assignments.event(Session.Assignment)
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wenzelm@45324
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257 |
}
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wenzelm@45324
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258 |
//}}}
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wenzelm@45324
|
259 |
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wenzelm@45324
|
260 |
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wenzelm@44598
|
261 |
/* resulting changes */
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wenzelm@34812
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262 |
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wenzelm@44604
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263 |
def handle_change(change: Change_Node)
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wenzelm@38477
|
264 |
//{{{
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wenzelm@34812
|
265 |
{
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wenzelm@44604
|
266 |
val previous = change.previous
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wenzelm@44604
|
267 |
val version = change.version
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wenzelm@44604
|
268 |
val name = change.name
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wenzelm@44604
|
269 |
val doc_edits = change.doc_edits
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wenzelm@38648
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270 |
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wenzelm@45290
|
271 |
def id_command(command: Command)
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wenzelm@44602
|
272 |
{
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wenzelm@44602
|
273 |
if (global_state().lookup_command(command.id).isEmpty) {
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wenzelm@44602
|
274 |
global_state.change(_.define_command(command))
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wenzelm@44602
|
275 |
prover.get.define_command(command.id, Symbol.encode(command.source))
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wenzelm@44602
|
276 |
}
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wenzelm@44602
|
277 |
}
|
wenzelm@45290
|
278 |
doc_edits foreach {
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wenzelm@45290
|
279 |
case (_, edit) =>
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wenzelm@45290
|
280 |
edit foreach { case (c1, c2) => c1 foreach id_command; c2 foreach id_command }
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wenzelm@45290
|
281 |
}
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wenzelm@44604
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282 |
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wenzelm@45400
|
283 |
val assignment = global_state().the_assignment(previous).check_finished
|
wenzelm@45400
|
284 |
global_state.change(_.define_version(version, assignment))
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wenzelm@45402
|
285 |
prover.get.update(previous.id, version.id, doc_edits)
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wenzelm@34812
|
286 |
}
|
wenzelm@38477
|
287 |
//}}}
|
wenzelm@34812
|
288 |
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wenzelm@34812
|
289 |
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wenzelm@34812
|
290 |
/* prover results */
|
wenzelm@34812
|
291 |
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wenzelm@34812
|
292 |
def handle_result(result: Isabelle_Process.Result)
|
wenzelm@38477
|
293 |
//{{{
|
wenzelm@34812
|
294 |
{
|
wenzelm@44598
|
295 |
def bad_result(result: Isabelle_Process.Result)
|
wenzelm@44598
|
296 |
{
|
wenzelm@44598
|
297 |
if (verbose)
|
wenzelm@44598
|
298 |
System.err.println("Ignoring prover result: " + result.message.toString)
|
wenzelm@44598
|
299 |
}
|
wenzelm@44598
|
300 |
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wenzelm@38995
|
301 |
result.properties match {
|
wenzelm@44624
|
302 |
case Position.Id(state_id) if !result.is_raw =>
|
wenzelm@38652
|
303 |
try {
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wenzelm@39099
|
304 |
val st = global_state.change_yield(_.accumulate(state_id, result.message))
|
wenzelm@39099
|
305 |
command_change_buffer ! st.command
|
wenzelm@38652
|
306 |
}
|
wenzelm@44624
|
307 |
catch {
|
wenzelm@44624
|
308 |
case _: Document.State.Fail => bad_result(result)
|
wenzelm@44624
|
309 |
}
|
wenzelm@44624
|
310 |
case Markup.Invoke_Scala(name, id) if result.is_raw =>
|
wenzelm@44624
|
311 |
Future.fork {
|
wenzelm@44624
|
312 |
val arg = XML.content(result.body).mkString
|
wenzelm@44624
|
313 |
val (tag, res) = Invoke_Scala.method(name, arg)
|
wenzelm@44624
|
314 |
prover.get.invoke_scala(id, tag, res)
|
wenzelm@44624
|
315 |
}
|
wenzelm@45173
|
316 |
case Markup.Cancel_Scala(id) =>
|
wenzelm@45173
|
317 |
System.err.println("cancel_scala " + id) // FIXME cancel JVM task
|
wenzelm@38995
|
318 |
case _ =>
|
wenzelm@39920
|
319 |
if (result.is_syslog) {
|
wenzelm@39920
|
320 |
reverse_syslog ::= result.message
|
wenzelm@40779
|
321 |
if (result.is_ready) {
|
wenzelm@44598
|
322 |
// FIXME move to ML side (!?)
|
wenzelm@40779
|
323 |
syntax += ("hence", Keyword.PRF_ASM_GOAL, "then have")
|
wenzelm@40779
|
324 |
syntax += ("thus", Keyword.PRF_ASM_GOAL, "then show")
|
wenzelm@40779
|
325 |
phase = Session.Ready
|
wenzelm@40779
|
326 |
}
|
wenzelm@39966
|
327 |
else if (result.is_exit && phase == Session.Startup) phase = Session.Failed
|
wenzelm@39961
|
328 |
else if (result.is_exit) phase = Session.Inactive
|
wenzelm@39920
|
329 |
}
|
wenzelm@39916
|
330 |
else if (result.is_stdout) { }
|
wenzelm@39915
|
331 |
else if (result.is_status) {
|
wenzelm@38652
|
332 |
result.body match {
|
wenzelm@45397
|
333 |
case List(Isar_Document.Assign(id, assign)) =>
|
wenzelm@45397
|
334 |
try { handle_assign(id, assign) }
|
wenzelm@38660
|
335 |
catch { case _: Document.State.Fail => bad_result(result) }
|
wenzelm@38652
|
336 |
case List(Keyword.Command_Decl(name, kind)) => syntax += (name, kind)
|
wenzelm@38652
|
337 |
case List(Keyword.Keyword_Decl(name)) => syntax += name
|
wenzelm@44548
|
338 |
case List(Thy_Info.Loaded_Theory(name)) => loaded_theories += name
|
wenzelm@39915
|
339 |
case _ => bad_result(result)
|
wenzelm@38652
|
340 |
}
|
wenzelm@38652
|
341 |
}
|
wenzelm@39915
|
342 |
else bad_result(result)
|
wenzelm@44624
|
343 |
}
|
wenzelm@34812
|
344 |
}
|
wenzelm@38477
|
345 |
//}}}
|
wenzelm@34812
|
346 |
|
wenzelm@34823
|
347 |
|
wenzelm@39920
|
348 |
/* main loop */
|
wenzelm@34812
|
349 |
|
wenzelm@44598
|
350 |
//{{{
|
wenzelm@38898
|
351 |
var finished = false
|
wenzelm@38898
|
352 |
while (!finished) {
|
wenzelm@38898
|
353 |
receive {
|
wenzelm@44526
|
354 |
case Start(timeout, args) if prover.isEmpty =>
|
wenzelm@39966
|
355 |
if (phase == Session.Inactive || phase == Session.Failed) {
|
wenzelm@39966
|
356 |
phase = Session.Startup
|
wenzelm@44532
|
357 |
prover = Some(new Isabelle_Process(timeout, this_actor, args:_*) with Isar_Document)
|
wenzelm@39966
|
358 |
}
|
wenzelm@34823
|
359 |
|
wenzelm@39966
|
360 |
case Stop =>
|
wenzelm@39966
|
361 |
if (phase == Session.Ready) {
|
wenzelm@39966
|
362 |
global_state.change(_ => Document.State.init) // FIXME event bus!?
|
wenzelm@39966
|
363 |
phase = Session.Shutdown
|
wenzelm@44526
|
364 |
prover.get.terminate
|
wenzelm@44599
|
365 |
prover = None
|
wenzelm@39966
|
366 |
phase = Session.Inactive
|
wenzelm@39966
|
367 |
}
|
wenzelm@39920
|
368 |
finished = true
|
wenzelm@39920
|
369 |
reply(())
|
wenzelm@39108
|
370 |
|
wenzelm@44599
|
371 |
case Interrupt if prover.isDefined =>
|
wenzelm@44599
|
372 |
prover.get.interrupt
|
wenzelm@44598
|
373 |
|
wenzelm@45292
|
374 |
case Init_Node(name, master_dir, header, perspective, text) if prover.isDefined =>
|
wenzelm@44600
|
375 |
// FIXME compare with existing node
|
wenzelm@45055
|
376 |
handle_edits(name, master_dir, header,
|
wenzelm@45292
|
377 |
List(Document.Node.Clear(),
|
wenzelm@45292
|
378 |
Document.Node.Edits(List(Text.Edit.insert(0, text))),
|
wenzelm@45292
|
379 |
Document.Node.Perspective(perspective)))
|
wenzelm@44598
|
380 |
reply(())
|
wenzelm@44598
|
381 |
|
wenzelm@45292
|
382 |
case Edit_Node(name, master_dir, header, perspective, text_edits) if prover.isDefined =>
|
wenzelm@45400
|
383 |
// FIXME
|
wenzelm@45400
|
384 |
// if (text_edits.isEmpty && global_state().tip_stable)
|
wenzelm@45400
|
385 |
// update_perspective(name, perspective)
|
wenzelm@45400
|
386 |
// else
|
wenzelm@45324
|
387 |
handle_edits(name, master_dir, header,
|
wenzelm@45324
|
388 |
List(Document.Node.Edits(text_edits), Document.Node.Perspective(perspective)))
|
wenzelm@44598
|
389 |
reply(())
|
wenzelm@44598
|
390 |
|
wenzelm@44604
|
391 |
case change: Change_Node if prover.isDefined =>
|
wenzelm@44604
|
392 |
handle_change(change)
|
wenzelm@44598
|
393 |
|
wenzelm@44603
|
394 |
case input: Isabelle_Process.Input =>
|
wenzelm@44603
|
395 |
raw_messages.event(input)
|
wenzelm@44603
|
396 |
|
wenzelm@44598
|
397 |
case result: Isabelle_Process.Result =>
|
wenzelm@44598
|
398 |
handle_result(result)
|
wenzelm@44603
|
399 |
raw_messages.event(result)
|
wenzelm@44598
|
400 |
|
wenzelm@44599
|
401 |
case bad => System.err.println("session_actor: ignoring bad message " + bad)
|
wenzelm@34780
|
402 |
}
|
wenzelm@34780
|
403 |
}
|
wenzelm@44598
|
404 |
//}}}
|
wenzelm@34780
|
405 |
}
|
wenzelm@34780
|
406 |
|
wenzelm@34812
|
407 |
|
wenzelm@44598
|
408 |
/* actions */
|
wenzelm@34812
|
409 |
|
wenzelm@41119
|
410 |
def start(timeout: Time, args: List[String]) { session_actor ! Start(timeout, args) }
|
wenzelm@34823
|
411 |
|
wenzelm@39920
|
412 |
def stop() { command_change_buffer !? Stop; session_actor !? Stop }
|
wenzelm@38477
|
413 |
|
wenzelm@44598
|
414 |
def interrupt() { session_actor ! Interrupt }
|
wenzelm@44598
|
415 |
|
wenzelm@45292
|
416 |
// FIXME simplify signature
|
wenzelm@45292
|
417 |
def init_node(name: String, master_dir: String,
|
wenzelm@45292
|
418 |
header: Document.Node_Header, perspective: Text.Perspective, text: String)
|
wenzelm@45292
|
419 |
{ session_actor !? Init_Node(name, master_dir, header, perspective, text) }
|
wenzelm@39857
|
420 |
|
wenzelm@45292
|
421 |
// FIXME simplify signature
|
wenzelm@45292
|
422 |
def edit_node(name: String, master_dir: String, header: Document.Node_Header,
|
wenzelm@45292
|
423 |
perspective: Text.Perspective, edits: List[Text.Edit])
|
wenzelm@45292
|
424 |
{ session_actor !? Edit_Node(name, master_dir, header, perspective, edits) }
|
wenzelm@34780
|
425 |
}
|