src/Pure/System/build.scala
author wenzelm
Thu, 19 Jul 2012 19:12:58 +0200
changeset 48352 7fbf98ee265f
parent 48351 a0b95a762abb
child 48354 aa1e730c3fdd
permissions -rw-r--r--
include COMPONENT/etc/sessions as catalog for more directories, for improved scalability with hundreds of entries (notably AFP); misc tuning and simplification;
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/*  Title:      Pure/System/build.scala
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    Author:     Makarius
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Build and manage Isabelle sessions.
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*/
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package isabelle
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import java.io.File
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import scala.collection.mutable
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import scala.annotation.tailrec
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object Build
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{
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  /** session information **/
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  type Options = List[(String, Option[String])]
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  object Session
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  {
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    object Key
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    {
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      object Ordering extends scala.math.Ordering[Key]
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      {
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        def compare(key1: Key, key2: Key): Int =
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          key1.order compare key2.order match {
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            case 0 => key1.name compare key2.name
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            case ord => ord
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          }
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      }
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    }
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    sealed case class Key(name: String, order: Int)
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    {
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      override def toString: String = name
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    }
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    sealed case class Info(
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      dir: Path,
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      description: String,
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      options: Options,
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      theories: List[(Options, String)],
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      files: List[String])
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    object Queue
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    {
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      val empty: Queue = new Queue()
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    }
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    final class Queue private(
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      keys: Map[String, Key] = Map.empty,
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      graph: Graph[Key, Info] = Graph.empty(Key.Ordering))
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    {
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      def defined(name: String): Boolean = keys.isDefinedAt(name)
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      def + (key: Key, info: Info, parent: Option[String]): Queue =
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      {
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        val keys1 =
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          if (defined(key.name)) error("Duplicate session: " + quote(key.name))
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          else keys + (key.name -> key)
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        val graph1 =
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          try {
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            graph.new_node(key, info).add_deps_acyclic(key, parent.toList.map(keys(_)))
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          }
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          catch {
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            case exn: Graph.Cycles[_] =>
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              error(cat_lines(exn.cycles.map(cycle =>
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                "Cyclic session dependency of " +
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                  cycle.map(key => quote(key.toString)).mkString(" via "))))
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          }
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        new Queue(keys1, graph1)
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      }
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      def topological_order: List[(Key, Info)] =
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        graph.topological_order.map(key => (key, graph.get_node(key)))
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    }
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  }
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  /* parsing */
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  private case class Session_Entry(
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    name: String,
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    reset: Boolean,
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    order: Int,
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    path: Option[String],
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    parent: Option[String],
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    description: String,
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    options: Options,
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    theories: List[(Options, List[String])],
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    files: List[String])
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  private object Parser extends Parse.Parser
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  {
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    val SESSION = "session"
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    val IN = "in"
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    val DESCRIPTION = "description"
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    val OPTIONS = "options"
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    val THEORIES = "theories"
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    val FILES = "files"
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    val syntax =
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      Outer_Syntax.empty + "!" + "(" + ")" + "+" + "," + "=" + "[" + "]" +
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        SESSION + IN + DESCRIPTION + OPTIONS + THEORIES + FILES
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    val session_entry: Parser[Session_Entry] =
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    {
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      val session_name = atom("session name", _.is_name)
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      val theory_name = atom("theory name", _.is_name)
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      val option =
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        name ~ opt(keyword("=") ~! name ^^ { case _ ~ x => x }) ^^ { case x ~ y => (x, y) }
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      val options = keyword("[") ~> repsep(option, keyword(",")) <~ keyword("]")
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      val theories =
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        keyword(THEORIES) ~! ((options | success(Nil)) ~ rep1(theory_name)) ^^
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          { case _ ~ (x ~ y) => (x, y) }
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      ((keyword(SESSION) ~! session_name) ^^ { case _ ~ x => x }) ~
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        (keyword("!") ^^^ true | success(false)) ~
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        (keyword("(") ~! (nat <~ keyword(")")) ^^ { case _ ~ x => x } | success(Integer.MAX_VALUE)) ~
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        (opt(keyword(IN) ~! string ^^ { case _ ~ x => x })) ~
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        (keyword("=") ~> opt(session_name <~ keyword("+"))) ~
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        (keyword(DESCRIPTION) ~! text ^^ { case _ ~ x => x } | success("")) ~
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        (keyword(OPTIONS) ~! options ^^ { case _ ~ x => x } | success(Nil)) ~
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        rep(theories) ~
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        (keyword(FILES) ~! rep1(path) ^^ { case _ ~ x => x } | success(Nil)) ^^
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          { case a ~ b ~ c ~ d ~ e ~ f ~ g ~ h ~ i => Session_Entry(a, b, c, d, e, f, g, h, i) }
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    }
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    def parse_entries(root: File): List[Session_Entry] =
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    {
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      val toks = syntax.scan(Standard_System.read_file(root))
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      parse_all(rep(session_entry), Token.reader(toks, root.toString)) match {
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        case Success(result, _) => result
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        case bad => error(bad.toString)
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      }
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    }
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  }
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  /* find sessions */
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  private def sessions_root(dir: Path, root: File, sessions: Session.Queue): Session.Queue =
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  {
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    (sessions /: Parser.parse_entries(root))((sessions1, entry) =>
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      try {
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        if (entry.name == "") error("Bad session name")
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        val full_name =
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          if (entry.name == "RAW" || entry.name == "Pure") {
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            if (entry.parent.isDefined) error("Illegal parent session")
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            else entry.name
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          }
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          else
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            entry.parent match {
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              case Some(parent_name) if sessions1.defined(parent_name) =>
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                if (entry.reset) entry.name
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                else parent_name + "-" + entry.name
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              case _ => error("Bad parent session")
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            }
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        val path =
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          entry.path match {
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            case Some(p) => Path.explode(p)
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            case None => Path.basic(entry.name)
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          }
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        val key = Session.Key(full_name, entry.order)
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        val info = Session.Info(dir + path, entry.description, entry.options,
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          entry.theories.map({ case (x, ys) => ys.map(y => (x, y)) }).flatten, entry.files)
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        sessions1 + (key, info, entry.parent)
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      }
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      catch {
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        case ERROR(msg) =>
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          error(msg + "\nThe error(s) above occurred in session entry " +
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            quote(entry.name) + " (file " + quote(root.toString) + ")")
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      })
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  }
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  private def sessions_dir(strict: Boolean, dir: Path, sessions: Session.Queue): Session.Queue =
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  {
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    val root = Isabelle_System.platform_file(dir + Path.basic("ROOT"))
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    if (root.isFile) sessions_root(dir, root, sessions)
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    else if (strict) error("Bad session root file: " + quote(root.toString))
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    else sessions
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  }
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  private def sessions_catalog(dir: Path, catalog: File, sessions: Session.Queue): Session.Queue =
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  {
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    val dirs = split_lines(Standard_System.read_file(catalog)).filter(_ != "")
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    (sessions /: dirs)((sessions1, dir1) =>
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      try {
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        val dir2 = dir + Path.explode(dir1)
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        if (Isabelle_System.platform_file(dir2).isDirectory) sessions_dir(true, dir2, sessions1)
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        else error("Bad session directory: " + dir2.toString)
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      }
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      catch {
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        case ERROR(msg) =>
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          error(msg + "\nThe error(s) above occurred in session catalog " + quote(catalog.toString))
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      })
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  }
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  def find_sessions(more_dirs: List[Path]): Session.Queue =
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  {
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    var sessions = Session.Queue.empty
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    for (dir <- Isabelle_System.components()) {
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      sessions = sessions_dir(false, dir, sessions)
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      val catalog = Isabelle_System.platform_file(dir + Path.explode("etc/sessions"))
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      if (catalog.isFile)
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        sessions = sessions_catalog(dir, catalog, sessions)
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    }
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    for (dir <- more_dirs) sessions = sessions_dir(true, dir, sessions)
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    sessions
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  }
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  /** build **/
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  def build(all_sessions: Boolean, build_images: Boolean, list_only: Boolean,
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    more_dirs: List[Path], options: List[String], sessions: List[String]): Int =
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  {
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    println("more_dirs = " + more_dirs.toString)
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    println("options = " + options.toString)
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    println("sessions = " + sessions.toString)
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    for ((key, info) <- find_sessions(more_dirs).topological_order)
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      println(key.name + " in " + info.dir)
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    0
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  }
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  /* command line entry point */
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  def main(args: Array[String])
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  {
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    Command_Line.tool {
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      args.toList match {
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        case
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          Properties.Value.Boolean(all_sessions) ::
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          Properties.Value.Boolean(build_images) ::
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          Properties.Value.Boolean(list_only) ::
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          Command_Line.Chunks(more_dirs, options, sessions) =>
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            build(all_sessions, build_images, list_only,
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              more_dirs.map(Path.explode), options, sessions)
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        case _ => error("Bad arguments:\n" + cat_lines(args))
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      }
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    }
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  }
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}
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