src/Pure/Thy/sessions.scala
author wenzelm
Sun Oct 01 17:59:26 2017 +0200 (21 months ago)
changeset 66743 ff05d922bc34
parent 66742 b3422f78270e
child 66744 fec1504e5f03
permissions -rw-r--r--
cache sources: invoke SHA1.digest at most once;
maintain imported_sources, as required for new theories;
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/*  Title:      Pure/Thy/sessions.scala
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    Author:     Makarius
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Cumulative session information.
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*/
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package isabelle
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import java.io.{File => JFile}
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import java.nio.ByteBuffer
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import java.nio.channels.FileChannel
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import java.nio.file.StandardOpenOption
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import scala.collection.SortedSet
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import scala.collection.mutable
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object Sessions
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{
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  /* base info and source dependencies */
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  val DRAFT = "Draft"
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  def is_pure(name: String): Boolean = name == Thy_Header.PURE
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  object Known
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  {
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    val empty: Known = Known()
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    def make(local_dir: Path, bases: List[Base],
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      theories: List[Document.Node.Name] = Nil,
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      loaded_files: List[(String, List[Path])] = Nil): Known =
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    {
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      def bases_iterator(local: Boolean) =
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        for {
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          base <- bases.iterator
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          (_, name) <- (if (local) base.known.theories_local else base.known.theories).iterator
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        } yield name
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      def local_theories_iterator =
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      {
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        val local_path = local_dir.canonical_file.toPath
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        theories.iterator.filter(name => name.path.canonical_file.toPath.startsWith(local_path))
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      }
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      val known_theories =
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        (Map.empty[String, Document.Node.Name] /: (bases_iterator(false) ++ theories.iterator))({
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          case (known, name) =>
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            known.get(name.theory) match {
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              case Some(name1) if name != name1 =>
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                error("Duplicate theory " + quote(name.node) + " vs. " + quote(name1.node))
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              case _ => known + (name.theory -> name)
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            }
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          })
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      val known_theories_local =
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        (Map.empty[String, Document.Node.Name] /:
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            (bases_iterator(true) ++ local_theories_iterator))({
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          case (known, name) => known + (name.theory -> name)
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        })
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      val known_files =
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        (Map.empty[JFile, List[Document.Node.Name]] /:
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            (bases_iterator(true) ++ bases_iterator(false) ++ theories.iterator))({
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          case (known, name) =>
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            val file = name.path.canonical_file
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            val theories1 = known.getOrElse(file, Nil)
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            if (theories1.exists(name1 => name.node == name1.node && name.theory == name1.theory))
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              known
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            else known + (file -> (name :: theories1))
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        })
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      val known_loaded_files =
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        (loaded_files.toMap /: bases.map(base => base.known.loaded_files))(_ ++ _)
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      Known(known_theories, known_theories_local,
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        known_files.iterator.map(p => (p._1, p._2.reverse)).toMap,
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        known_loaded_files)
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    }
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  }
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  sealed case class Known(
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    theories: Map[String, Document.Node.Name] = Map.empty,
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    theories_local: Map[String, Document.Node.Name] = Map.empty,
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    files: Map[JFile, List[Document.Node.Name]] = Map.empty,
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    loaded_files: Map[String, List[Path]] = Map.empty)
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  {
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    def platform_path: Known =
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      copy(theories = for ((a, b) <- theories) yield (a, b.map(File.platform_path(_))),
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        theories_local = for ((a, b) <- theories_local) yield (a, b.map(File.platform_path(_))),
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        files = for ((a, b) <- files) yield (a, b.map(c => c.map(File.platform_path(_)))))
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    def standard_path: Known =
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      copy(theories = for ((a, b) <- theories) yield (a, b.map(File.standard_path(_))),
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        theories_local = for ((a, b) <- theories_local) yield (a, b.map(File.standard_path(_))),
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        files = for ((a, b) <- files) yield (a, b.map(c => c.map(File.standard_path(_)))))
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    def get_file(file: JFile, bootstrap: Boolean = false): Option[Document.Node.Name] =
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    {
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      val res = files.getOrElse(File.canonical(file), Nil).headOption
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      if (bootstrap) res.map(_.map_theory(Thy_Header.bootstrap_name(_))) else res
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    }
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  }
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  object Base
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  {
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    def bootstrap(global_theories: Map[String, String]): Base =
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      Base(
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        global_theories = global_theories,
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        overall_syntax = Thy_Header.bootstrap_syntax)
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  }
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  sealed case class Base(
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    pos: Position.T = Position.none,
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    global_theories: Map[String, String] = Map.empty,
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    loaded_theories: Graph[String, Outer_Syntax] = Graph.string,
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    known: Known = Known.empty,
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    overall_syntax: Outer_Syntax = Outer_Syntax.empty,
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    sources: List[(Path, SHA1.Digest)] = Nil,
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    imported_sources: List[(Path, SHA1.Digest)] = Nil,
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    session_graph: Graph_Display.Graph = Graph_Display.empty_graph,
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    errors: List[String] = Nil,
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    imports: Option[Base] = None)
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  {
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    def platform_path: Base = copy(known = known.platform_path)
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    def standard_path: Base = copy(known = known.standard_path)
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    def loaded_theory(name: String): Boolean = loaded_theories.defined(name)
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    def loaded_theory(name: Document.Node.Name): Boolean = loaded_theory(name.theory)
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    def loaded_theory_syntax(name: String): Option[Outer_Syntax] =
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      if (loaded_theory(name)) Some(loaded_theories.get_node(name)) else None
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    def loaded_theory_syntax(name: Document.Node.Name): Option[Outer_Syntax] =
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      loaded_theory_syntax(name.theory)
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    def node_syntax(nodes: Document.Nodes, name: Document.Node.Name): Option[Outer_Syntax] =
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      nodes(name).syntax orElse loaded_theory_syntax(name)
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    def known_theory(name: String): Option[Document.Node.Name] =
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      known.theories.get(name)
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    def dest_known_theories: List[(String, String)] =
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      for ((theory, node_name) <- known.theories.toList)
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        yield (theory, node_name.node)
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    def get_imports: Base = imports getOrElse Base.bootstrap(global_theories)
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  }
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  sealed case class Deps(session_bases: Map[String, Base], all_known: Known)
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  {
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    def is_empty: Boolean = session_bases.isEmpty
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    def apply(name: String): Base = session_bases(name)
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    def sources(name: String): List[SHA1.Digest] = session_bases(name).sources.map(_._2)
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    def errors: List[String] =
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      (for {
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        (name, base) <- session_bases.iterator
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        if base.errors.nonEmpty
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      } yield cat_lines(base.errors) +
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          "\nThe error(s) above occurred in session " + quote(name) + Position.here(base.pos)
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      ).toList
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    def check_errors: Deps =
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      errors match {
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        case Nil => this
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        case errs => error(cat_lines(errs))
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      }
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  }
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  def deps(sessions: T,
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      progress: Progress = No_Progress,
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      inlined_files: Boolean = false,
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      verbose: Boolean = false,
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      list_files: Boolean = false,
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      check_keywords: Set[String] = Set.empty,
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      global_theories: Map[String, String] = Map.empty): Deps =
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  {
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    var cache_sources = Map.empty[JFile, SHA1.Digest]
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    def check_sources(paths: List[Path]): List[(Path, SHA1.Digest)] =
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    {
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      for {
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        path <- paths
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        file = path.file
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        if cache_sources.isDefinedAt(file) || file.isFile
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      }
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      yield {
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        cache_sources.get(file) match {
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          case Some(digest) => (path, digest)
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          case None =>
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            val digest = SHA1.digest(file)
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            cache_sources = cache_sources + (file -> digest)
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            (path, digest)
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        }
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      }
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    }
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    val session_bases =
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      (Map.empty[String, Base] /: sessions.imports_topological_order)({
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        case (session_bases, info) =>
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          if (progress.stopped) throw Exn.Interrupt()
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          try {
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            val parent_base: Sessions.Base =
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              info.parent match {
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                case None => Base.bootstrap(global_theories)
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                case Some(parent) => session_bases(parent)
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              }
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            val imports_base: Sessions.Base =
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              parent_base.copy(known =
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                Known.make(info.dir, parent_base :: info.imports.map(session_bases(_))))
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            val resources = new Resources(imports_base)
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            if (verbose || list_files) {
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              val groups =
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                if (info.groups.isEmpty) ""
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                else info.groups.mkString(" (", " ", ")")
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              progress.echo("Session " + info.chapter + "/" + info.name + groups)
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            }
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            val thy_deps =
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              resources.thy_info.dependencies(
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                for { (_, thys) <- info.theories; (thy, pos) <- thys }
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                yield (resources.import_name(info.theory_qualifier, info.dir.implode, thy), pos))
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            val overall_syntax = thy_deps.overall_syntax
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            val theory_files = thy_deps.names.map(_.path)
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            val loaded_files =
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              if (inlined_files) {
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                if (Sessions.is_pure(info.name)) {
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                  (Thy_Header.PURE -> resources.pure_files(overall_syntax, info.dir)) ::
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                    thy_deps.loaded_files.filterNot(p => p._1 == Thy_Header.PURE)
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                }
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                else thy_deps.loaded_files
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              }
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              else Nil
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            val session_files =
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              (theory_files ::: loaded_files.flatMap(_._2) :::
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                info.files.map(file => info.dir + file) :::
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                info.document_files.map(file => info.dir + file._1 + file._2)).map(_.expand)
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            val imported_files = if (inlined_files) thy_deps.imported_files else Nil
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            if (list_files)
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              progress.echo(cat_lines(session_files.map(_.implode).sorted.map("  " + _)))
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            if (check_keywords.nonEmpty) {
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              Check_Keywords.check_keywords(
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                progress, overall_syntax.keywords, check_keywords, theory_files)
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            }
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            val session_graph: Graph_Display.Graph =
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            {
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              def session_node(name: String): Graph_Display.Node =
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                Graph_Display.Node("[" + name + "]", "session." + name)
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              def node(name: Document.Node.Name): Graph_Display.Node =
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              {
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                val qualifier = resources.theory_qualifier(name)
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                if (qualifier == info.theory_qualifier)
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                  Graph_Display.Node(name.theory_base_name, "theory." + name.theory)
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                else session_node(qualifier)
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              }
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              val imports_subgraph =
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                sessions.imports_graph.restrict(
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                  sessions.imports_graph.all_preds(info.parent.toList ::: info.imports).toSet)
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              val graph0 =
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                (Graph_Display.empty_graph /: imports_subgraph.topological_order)(
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                  { case (g, session) =>
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                      val a = session_node(session)
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                      val bs = imports_subgraph.imm_preds(session).toList.map(session_node(_))
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                      ((g /: (a :: bs))(_.default_node(_, Nil)) /: bs)(_.add_edge(_, a)) })
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              (graph0 /: thy_deps.entries)(
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                { case (g, entry) =>
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                    val a = node(entry.name)
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                    val bs =
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                      entry.header.imports.map({ case (name, _) => node(name) }).
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                        filterNot(_ == a)
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                    ((g /: (a :: bs))(_.default_node(_, Nil)) /: bs)(_.add_edge(_, a)) })
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            }
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            val known =
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              Known.make(info.dir, List(imports_base),
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                theories = thy_deps.names,
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                loaded_files = loaded_files)
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            val sources_errors =
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              for (p <- session_files if !p.is_file) yield "No such file: " + p
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            val base =
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              Base(
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                pos = info.pos,
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                global_theories = global_theories,
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                loaded_theories = thy_deps.loaded_theories,
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                known = known,
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                overall_syntax = overall_syntax,
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                sources = check_sources(session_files),
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                imported_sources = check_sources(imported_files),
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                session_graph = session_graph,
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                errors = thy_deps.errors ::: sources_errors,
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                imports = Some(imports_base))
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            session_bases + (info.name -> base)
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          }
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          catch {
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            case ERROR(msg) =>
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              cat_error(msg, "The error(s) above occurred in session " +
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                quote(info.name) + Position.here(info.pos))
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          }
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      })
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    Deps(session_bases, Known.make(Path.current, session_bases.toList.map(_._2)))
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  }
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  def session_base_errors(
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    options: Options,
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    session: String,
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    dirs: List[Path] = Nil,
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    inlined_files: Boolean = false,
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    all_known: Boolean = false): (List[String], Base) =
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  {
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    val full_sessions = load(options, dirs = dirs)
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    val global_theories = full_sessions.global_theories
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    val (_, selected_sessions) = full_sessions.selection(Selection(sessions = List(session)))
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    val sessions: T = if (all_known) full_sessions else selected_sessions
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    val deps =
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      Sessions.deps(sessions, inlined_files = inlined_files, global_theories = global_theories)
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    val base = if (all_known) deps(session).copy(known = deps.all_known) else deps(session)
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    (deps.errors, base)
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  }
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   335
wenzelm@66571
   336
  def session_base(
wenzelm@66571
   337
    options: Options,
wenzelm@66571
   338
    session: String,
wenzelm@66571
   339
    dirs: List[Path] = Nil,
wenzelm@66701
   340
    inlined_files: Boolean = false,
wenzelm@66571
   341
    all_known: Boolean = false): Base =
wenzelm@66571
   342
  {
wenzelm@66701
   343
    val (errs, base) =
wenzelm@66701
   344
      session_base_errors(options, session, dirs = dirs,
wenzelm@66701
   345
        inlined_files = inlined_files, all_known = all_known)
wenzelm@66573
   346
    if (errs.isEmpty) base else error(cat_lines(errs))
wenzelm@65251
   347
  }
wenzelm@65251
   348
wenzelm@65251
   349
wenzelm@65415
   350
  /* cumulative session info */
wenzelm@62631
   351
wenzelm@62631
   352
  sealed case class Info(
wenzelm@65519
   353
    name: String,
wenzelm@62631
   354
    chapter: String,
wenzelm@62631
   355
    select: Boolean,
wenzelm@62631
   356
    pos: Position.T,
wenzelm@62631
   357
    groups: List[String],
wenzelm@62631
   358
    dir: Path,
wenzelm@62631
   359
    parent: Option[String],
wenzelm@62631
   360
    description: String,
wenzelm@62631
   361
    options: Options,
wenzelm@65420
   362
    imports: List[String],
wenzelm@65517
   363
    theories: List[(Options, List[(String, Position.T)])],
wenzelm@65374
   364
    global_theories: List[String],
wenzelm@62631
   365
    files: List[Path],
wenzelm@62631
   366
    document_files: List[(Path, Path)],
wenzelm@62631
   367
    meta_digest: SHA1.Digest)
wenzelm@62631
   368
  {
wenzelm@62631
   369
    def timeout: Time = Time.seconds(options.real("timeout") * options.real("timeout_scale"))
wenzelm@65456
   370
wenzelm@65520
   371
    def theory_qualifier: String =
wenzelm@65456
   372
      options.string("theory_qualifier") match {
wenzelm@65520
   373
        case "" => name
wenzelm@65457
   374
        case qualifier => qualifier
wenzelm@65456
   375
      }
wenzelm@62631
   376
  }
wenzelm@62631
   377
wenzelm@65419
   378
  object Selection
wenzelm@65419
   379
  {
wenzelm@65422
   380
    val empty: Selection = Selection()
wenzelm@65525
   381
    val all: Selection = Selection(all_sessions = true)
wenzelm@65419
   382
  }
wenzelm@65419
   383
wenzelm@65419
   384
  sealed case class Selection(
wenzelm@65419
   385
    requirements: Boolean = false,
wenzelm@65419
   386
    all_sessions: Boolean = false,
wenzelm@66737
   387
    base_sessions: List[String] = Nil,
wenzelm@65419
   388
    exclude_session_groups: List[String] = Nil,
wenzelm@65419
   389
    exclude_sessions: List[String] = Nil,
wenzelm@65419
   390
    session_groups: List[String] = Nil,
wenzelm@65419
   391
    sessions: List[String] = Nil)
wenzelm@65419
   392
  {
wenzelm@66736
   393
    def ++ (other: Selection): Selection =
wenzelm@65422
   394
      Selection(
wenzelm@65422
   395
        requirements = requirements || other.requirements,
wenzelm@65422
   396
        all_sessions = all_sessions || other.all_sessions,
wenzelm@66737
   397
        base_sessions = Library.merge(base_sessions, other.base_sessions),
wenzelm@66736
   398
        exclude_session_groups = Library.merge(exclude_session_groups, other.exclude_session_groups),
wenzelm@66736
   399
        exclude_sessions = Library.merge(exclude_sessions, other.exclude_sessions),
wenzelm@66736
   400
        session_groups = Library.merge(session_groups, other.session_groups),
wenzelm@66736
   401
        sessions = Library.merge(sessions, other.sessions))
wenzelm@65422
   402
wenzelm@65419
   403
    def apply(graph: Graph[String, Info]): (List[String], Graph[String, Info]) =
wenzelm@65419
   404
    {
wenzelm@65419
   405
      val bad_sessions =
wenzelm@66737
   406
        SortedSet((base_sessions ::: exclude_sessions ::: sessions).
wenzelm@66737
   407
          filterNot(graph.defined(_)): _*).toList
wenzelm@66737
   408
      if (bad_sessions.nonEmpty)
wenzelm@66737
   409
        error("Undefined session(s): " + commas_quote(bad_sessions))
wenzelm@65419
   410
wenzelm@65419
   411
      val excluded =
wenzelm@65419
   412
      {
wenzelm@65419
   413
        val exclude_group = exclude_session_groups.toSet
wenzelm@65419
   414
        val exclude_group_sessions =
wenzelm@65419
   415
          (for {
wenzelm@65419
   416
            (name, (info, _)) <- graph.iterator
wenzelm@65419
   417
            if graph.get_node(name).groups.exists(exclude_group)
wenzelm@65419
   418
          } yield name).toList
wenzelm@65419
   419
        graph.all_succs(exclude_group_sessions ::: exclude_sessions).toSet
wenzelm@65419
   420
      }
wenzelm@65419
   421
wenzelm@65419
   422
      val pre_selected =
wenzelm@65419
   423
      {
wenzelm@65419
   424
        if (all_sessions) graph.keys
wenzelm@65419
   425
        else {
wenzelm@65419
   426
          val select_group = session_groups.toSet
wenzelm@66737
   427
          val select = sessions.toSet ++ graph.all_succs(base_sessions)
wenzelm@65419
   428
          (for {
wenzelm@65419
   429
            (name, (info, _)) <- graph.iterator
wenzelm@65419
   430
            if info.select || select(name) || graph.get_node(name).groups.exists(select_group)
wenzelm@65419
   431
          } yield name).toList
wenzelm@65419
   432
        }
wenzelm@65419
   433
      }.filterNot(excluded)
wenzelm@65419
   434
wenzelm@65419
   435
      val selected =
wenzelm@65419
   436
        if (requirements) (graph.all_preds(pre_selected).toSet -- pre_selected).toList
wenzelm@65419
   437
        else pre_selected
wenzelm@65419
   438
wenzelm@65419
   439
      (selected, graph.restrict(graph.all_preds(selected).toSet))
wenzelm@65419
   440
    }
wenzelm@65419
   441
  }
wenzelm@65419
   442
wenzelm@65415
   443
  def make(infos: Traversable[(String, Info)]): T =
wenzelm@62631
   444
  {
wenzelm@65420
   445
    def add_edges(graph: Graph[String, Info], kind: String, edges: Info => Traversable[String])
wenzelm@65420
   446
      : Graph[String, Info] =
wenzelm@65420
   447
    {
wenzelm@65420
   448
      def add_edge(pos: Position.T, name: String, g: Graph[String, Info], parent: String) =
wenzelm@65420
   449
      {
wenzelm@65420
   450
        if (!g.defined(parent))
wenzelm@65420
   451
          error("Bad " + kind + " session " + quote(parent) + " for " +
wenzelm@65420
   452
            quote(name) + Position.here(pos))
wenzelm@65420
   453
wenzelm@65420
   454
        try { g.add_edge_acyclic(parent, name) }
wenzelm@65420
   455
        catch {
wenzelm@65420
   456
          case exn: Graph.Cycles[_] =>
wenzelm@65420
   457
            error(cat_lines(exn.cycles.map(cycle =>
wenzelm@65420
   458
              "Cyclic session dependency of " +
wenzelm@65420
   459
                cycle.map(c => quote(c.toString)).mkString(" via "))) + Position.here(pos))
wenzelm@65420
   460
        }
wenzelm@65420
   461
      }
wenzelm@65420
   462
      (graph /: graph.iterator) {
wenzelm@65420
   463
        case (g, (name, (info, _))) => (g /: edges(info))(add_edge(info.pos, name, _, _))
wenzelm@65420
   464
      }
wenzelm@65420
   465
    }
wenzelm@65420
   466
wenzelm@65420
   467
    val graph0 =
wenzelm@65415
   468
      (Graph.string[Info] /: infos) {
wenzelm@65415
   469
        case (graph, (name, info)) =>
wenzelm@65415
   470
          if (graph.defined(name))
wenzelm@65415
   471
            error("Duplicate session " + quote(name) + Position.here(info.pos) +
wenzelm@65415
   472
              Position.here(graph.get_node(name).pos))
wenzelm@65415
   473
          else graph.new_node(name, info)
wenzelm@65415
   474
      }
wenzelm@65420
   475
    val graph1 = add_edges(graph0, "parent", _.parent)
wenzelm@65420
   476
    val graph2 = add_edges(graph1, "imports", _.imports)
wenzelm@62631
   477
wenzelm@65420
   478
    new T(graph1, graph2)
wenzelm@62631
   479
  }
wenzelm@62631
   480
wenzelm@65420
   481
  final class T private[Sessions](
wenzelm@65420
   482
      val build_graph: Graph[String, Info],
wenzelm@65420
   483
      val imports_graph: Graph[String, Info])
wenzelm@62631
   484
  {
wenzelm@65420
   485
    def apply(name: String): Info = imports_graph.get_node(name)
wenzelm@65420
   486
    def get(name: String): Option[Info] =
wenzelm@65420
   487
      if (imports_graph.defined(name)) Some(imports_graph.get_node(name)) else None
wenzelm@62631
   488
wenzelm@65457
   489
    def global_theories: Map[String, String] =
wenzelm@65490
   490
      (Thy_Header.bootstrap_global_theories.toMap /:
wenzelm@65424
   491
        (for {
wenzelm@65519
   492
          (_, (info, _)) <- imports_graph.iterator
wenzelm@65519
   493
          thy <- info.global_theories.iterator }
wenzelm@65519
   494
         yield (thy, info)))({
wenzelm@65519
   495
            case (global, (thy, info)) =>
wenzelm@65520
   496
              val qualifier = info.theory_qualifier
wenzelm@65457
   497
              global.get(thy) match {
wenzelm@65457
   498
                case Some(qualifier1) if qualifier != qualifier1 =>
wenzelm@65457
   499
                  error("Duplicate global theory " + quote(thy) + Position.here(info.pos))
wenzelm@65457
   500
                case _ => global + (thy -> qualifier)
wenzelm@65457
   501
              }
wenzelm@65457
   502
          })
wenzelm@65372
   503
wenzelm@65419
   504
    def selection(select: Selection): (List[String], T) =
wenzelm@62631
   505
    {
wenzelm@65420
   506
      val (_, build_graph1) = select(build_graph)
wenzelm@65420
   507
      val (selected, imports_graph1) = select(imports_graph)
wenzelm@65420
   508
      (selected, new T(build_graph1, imports_graph1))
wenzelm@62631
   509
    }
wenzelm@62631
   510
wenzelm@65420
   511
    def build_ancestors(name: String): List[String] =
wenzelm@65420
   512
      build_graph.all_preds(List(name)).tail.reverse
wenzelm@65420
   513
wenzelm@65420
   514
    def build_descendants(names: List[String]): List[String] =
wenzelm@65420
   515
      build_graph.all_succs(names)
wenzelm@62631
   516
wenzelm@65519
   517
    def build_topological_order: List[Info] =
wenzelm@65519
   518
      build_graph.topological_order.map(apply(_))
wenzelm@62631
   519
wenzelm@65566
   520
    def imports_ancestors(name: String): List[String] =
wenzelm@65566
   521
      imports_graph.all_preds(List(name)).tail.reverse
wenzelm@65566
   522
wenzelm@65519
   523
    def imports_topological_order: List[Info] =
wenzelm@65519
   524
      imports_graph.topological_order.map(apply(_))
wenzelm@65420
   525
wenzelm@65420
   526
    override def toString: String =
wenzelm@65420
   527
      imports_graph.keys_iterator.mkString("Sessions.T(", ", ", ")")
wenzelm@62631
   528
  }
wenzelm@62631
   529
wenzelm@62631
   530
wenzelm@62631
   531
  /* parser */
wenzelm@62631
   532
wenzelm@62864
   533
  val ROOT = Path.explode("ROOT")
wenzelm@62864
   534
  val ROOTS = Path.explode("ROOTS")
wenzelm@62864
   535
wenzelm@62631
   536
  private val CHAPTER = "chapter"
wenzelm@62631
   537
  private val SESSION = "session"
wenzelm@62631
   538
  private val IN = "in"
wenzelm@62631
   539
  private val DESCRIPTION = "description"
wenzelm@62631
   540
  private val OPTIONS = "options"
wenzelm@65420
   541
  private val SESSIONS = "sessions"
wenzelm@62631
   542
  private val THEORIES = "theories"
wenzelm@65374
   543
  private val GLOBAL = "global"
wenzelm@62631
   544
  private val FILES = "files"
wenzelm@62631
   545
  private val DOCUMENT_FILES = "document_files"
wenzelm@62631
   546
wenzelm@62631
   547
  lazy val root_syntax =
wenzelm@65374
   548
    Outer_Syntax.init() + "(" + ")" + "+" + "," + "=" + "[" + "]" + GLOBAL + IN +
wenzelm@63443
   549
      (CHAPTER, Keyword.THY_DECL) +
wenzelm@63443
   550
      (SESSION, Keyword.THY_DECL) +
wenzelm@63443
   551
      (DESCRIPTION, Keyword.QUASI_COMMAND) +
wenzelm@63443
   552
      (OPTIONS, Keyword.QUASI_COMMAND) +
wenzelm@65420
   553
      (SESSIONS, Keyword.QUASI_COMMAND) +
wenzelm@63443
   554
      (THEORIES, Keyword.QUASI_COMMAND) +
wenzelm@63443
   555
      (FILES, Keyword.QUASI_COMMAND) +
wenzelm@63443
   556
      (DOCUMENT_FILES, Keyword.QUASI_COMMAND)
wenzelm@62631
   557
wenzelm@62968
   558
  private object Parser extends Parse.Parser with Options.Parser
wenzelm@62631
   559
  {
wenzelm@62631
   560
    private abstract class Entry
wenzelm@62631
   561
    private sealed case class Chapter(name: String) extends Entry
wenzelm@62631
   562
    private sealed case class Session_Entry(
wenzelm@62631
   563
      pos: Position.T,
wenzelm@62631
   564
      name: String,
wenzelm@62631
   565
      groups: List[String],
wenzelm@62631
   566
      path: String,
wenzelm@62631
   567
      parent: Option[String],
wenzelm@62631
   568
      description: String,
wenzelm@62631
   569
      options: List[Options.Spec],
wenzelm@65420
   570
      imports: List[String],
wenzelm@65517
   571
      theories: List[(List[Options.Spec], List[((String, Position.T), Boolean)])],
wenzelm@62631
   572
      files: List[String],
wenzelm@62631
   573
      document_files: List[(String, String)]) extends Entry
wenzelm@65580
   574
    {
wenzelm@65580
   575
      def theories_no_position: List[(List[Options.Spec], List[(String, Boolean)])] =
wenzelm@65580
   576
        theories.map({ case (a, b) => (a, b.map({ case ((c, _), d) => (c, d) })) })
wenzelm@65580
   577
    }
wenzelm@62631
   578
wenzelm@62631
   579
    private val chapter: Parser[Chapter] =
wenzelm@62631
   580
    {
wenzelm@62631
   581
      val chapter_name = atom("chapter name", _.is_name)
wenzelm@62631
   582
wenzelm@62631
   583
      command(CHAPTER) ~! chapter_name ^^ { case _ ~ a => Chapter(a) }
wenzelm@62631
   584
    }
wenzelm@62631
   585
wenzelm@62631
   586
    private val session_entry: Parser[Session_Entry] =
wenzelm@62631
   587
    {
wenzelm@62631
   588
      val session_name = atom("session name", _.is_name)
wenzelm@62631
   589
wenzelm@62631
   590
      val option =
wenzelm@62968
   591
        option_name ~ opt($$$("=") ~! option_value ^^
wenzelm@62968
   592
          { case _ ~ x => x }) ^^ { case x ~ y => (x, y) }
wenzelm@62631
   593
      val options = $$$("[") ~> rep1sep(option, $$$(",")) <~ $$$("]")
wenzelm@62631
   594
wenzelm@65374
   595
      val global =
wenzelm@65374
   596
        ($$$("(") ~! $$$(GLOBAL) ~ $$$(")")) ^^ { case _ => true } | success(false)
wenzelm@65374
   597
wenzelm@65374
   598
      val theory_entry =
wenzelm@65517
   599
        position(theory_name) ~ global ^^ { case x ~ y => (x, y) }
wenzelm@65374
   600
wenzelm@62631
   601
      val theories =
wenzelm@65374
   602
        $$$(THEORIES) ~!
wenzelm@65374
   603
          ((options | success(Nil)) ~ rep(theory_entry)) ^^
wenzelm@65374
   604
          { case _ ~ (x ~ y) => (x, y) }
wenzelm@62631
   605
wenzelm@62631
   606
      val document_files =
wenzelm@62631
   607
        $$$(DOCUMENT_FILES) ~!
wenzelm@62631
   608
          (($$$("(") ~! ($$$(IN) ~! (path ~ $$$(")"))) ^^
wenzelm@62631
   609
              { case _ ~ (_ ~ (x ~ _)) => x } | success("document")) ~
wenzelm@62631
   610
            rep1(path)) ^^ { case _ ~ (x ~ y) => y.map((x, _)) }
wenzelm@62631
   611
wenzelm@62631
   612
      command(SESSION) ~!
wenzelm@62631
   613
        (position(session_name) ~
wenzelm@62631
   614
          (($$$("(") ~! (rep1(name) <~ $$$(")")) ^^ { case _ ~ x => x }) | success(Nil)) ~
wenzelm@62631
   615
          (($$$(IN) ~! path ^^ { case _ ~ x => x }) | success(".")) ~
wenzelm@62631
   616
          ($$$("=") ~!
wenzelm@62631
   617
            (opt(session_name ~! $$$("+") ^^ { case x ~ _ => x }) ~
wenzelm@62631
   618
              (($$$(DESCRIPTION) ~! text ^^ { case _ ~ x => x }) | success("")) ~
wenzelm@62631
   619
              (($$$(OPTIONS) ~! options ^^ { case _ ~ x => x }) | success(Nil)) ~
wenzelm@65420
   620
              (($$$(SESSIONS) ~! rep(session_name)  ^^ { case _ ~ x => x }) | success(Nil)) ~
wenzelm@62631
   621
              rep1(theories) ~
wenzelm@62631
   622
              (($$$(FILES) ~! rep1(path) ^^ { case _ ~ x => x }) | success(Nil)) ~
wenzelm@62631
   623
              (rep(document_files) ^^ (x => x.flatten))))) ^^
wenzelm@65420
   624
        { case _ ~ ((a, pos) ~ b ~ c ~ (_ ~ (d ~ e ~ f ~ g ~ h ~ i ~ j))) =>
wenzelm@65420
   625
            Session_Entry(pos, a, b, c, d, e, f, g, h, i, j) }
wenzelm@62631
   626
    }
wenzelm@62631
   627
wenzelm@62631
   628
    def parse(options: Options, select: Boolean, dir: Path): List[(String, Info)] =
wenzelm@62631
   629
    {
wenzelm@62631
   630
      def make_info(entry_chapter: String, entry: Session_Entry): (String, Info) =
wenzelm@62631
   631
      {
wenzelm@62631
   632
        try {
wenzelm@62631
   633
          val name = entry.name
wenzelm@62631
   634
wenzelm@65445
   635
          if (name == "" || name == DRAFT) error("Bad session name")
wenzelm@65360
   636
          if (is_pure(name) && entry.parent.isDefined) error("Illegal parent session")
wenzelm@65360
   637
          if (!is_pure(name) && !entry.parent.isDefined) error("Missing parent session")
wenzelm@62631
   638
wenzelm@62631
   639
          val session_options = options ++ entry.options
wenzelm@62631
   640
wenzelm@62631
   641
          val theories =
wenzelm@65392
   642
            entry.theories.map({ case (opts, thys) => (session_options ++ opts, thys.map(_._1)) })
wenzelm@65374
   643
wenzelm@65374
   644
          val global_theories =
wenzelm@65517
   645
            for { (_, thys) <- entry.theories; ((thy, pos), global) <- thys if global }
wenzelm@65374
   646
            yield {
wenzelm@65999
   647
              val thy_name = Path.explode(thy).expand.base_name
wenzelm@65374
   648
              if (Long_Name.is_qualified(thy_name))
wenzelm@65517
   649
                error("Bad qualified name for global theory " +
wenzelm@65517
   650
                  quote(thy_name) + Position.here(pos))
wenzelm@65374
   651
              else thy_name
wenzelm@65374
   652
            }
wenzelm@65374
   653
wenzelm@62631
   654
          val files = entry.files.map(Path.explode(_))
wenzelm@62631
   655
          val document_files =
wenzelm@62631
   656
            entry.document_files.map({ case (s1, s2) => (Path.explode(s1), Path.explode(s2)) })
wenzelm@62631
   657
wenzelm@62631
   658
          val meta_digest =
wenzelm@65580
   659
            SHA1.digest((entry_chapter, name, entry.parent, entry.options, entry.imports,
wenzelm@65580
   660
              entry.theories_no_position, entry.files, entry.document_files).toString)
wenzelm@62631
   661
wenzelm@62631
   662
          val info =
wenzelm@65519
   663
            Info(name, entry_chapter, select, entry.pos, entry.groups,
wenzelm@65519
   664
              dir + Path.explode(entry.path), entry.parent, entry.description, session_options,
wenzelm@65519
   665
              entry.imports, theories, global_theories, files, document_files, meta_digest)
wenzelm@62631
   666
wenzelm@62631
   667
          (name, info)
wenzelm@62631
   668
        }
wenzelm@62631
   669
        catch {
wenzelm@62631
   670
          case ERROR(msg) =>
wenzelm@62631
   671
            error(msg + "\nThe error(s) above occurred in session entry " +
wenzelm@62631
   672
              quote(entry.name) + Position.here(entry.pos))
wenzelm@62631
   673
        }
wenzelm@62631
   674
      }
wenzelm@62631
   675
wenzelm@62631
   676
      val root = dir + ROOT
wenzelm@62631
   677
      if (root.is_file) {
wenzelm@62631
   678
        val toks = Token.explode(root_syntax.keywords, File.read(root))
wenzelm@62631
   679
        val start = Token.Pos.file(root.implode)
wenzelm@62631
   680
wenzelm@62631
   681
        parse_all(rep(chapter | session_entry), Token.reader(toks, start)) match {
wenzelm@62631
   682
          case Success(result, _) =>
wenzelm@62631
   683
            var entry_chapter = "Unsorted"
wenzelm@62631
   684
            val infos = new mutable.ListBuffer[(String, Info)]
wenzelm@62631
   685
            result.foreach {
wenzelm@62631
   686
              case Chapter(name) => entry_chapter = name
wenzelm@62631
   687
              case entry: Session_Entry => infos += make_info(entry_chapter, entry)
wenzelm@62631
   688
            }
wenzelm@62631
   689
            infos.toList
wenzelm@62631
   690
          case bad => error(bad.toString)
wenzelm@62631
   691
        }
wenzelm@62631
   692
      }
wenzelm@62631
   693
      else Nil
wenzelm@62631
   694
    }
wenzelm@62631
   695
  }
wenzelm@62631
   696
wenzelm@62631
   697
wenzelm@62635
   698
  /* load sessions from certain directories */
wenzelm@62631
   699
wenzelm@62631
   700
  private def is_session_dir(dir: Path): Boolean =
wenzelm@62631
   701
    (dir + ROOT).is_file || (dir + ROOTS).is_file
wenzelm@62631
   702
wenzelm@62631
   703
  private def check_session_dir(dir: Path): Path =
wenzelm@65468
   704
    if (is_session_dir(dir)) File.pwd() + dir.expand
wenzelm@62631
   705
    else error("Bad session root directory: " + dir.toString)
wenzelm@62631
   706
wenzelm@65561
   707
  def directories(dirs: List[Path], select_dirs: List[Path]): List[(Boolean, Path)] =
wenzelm@65561
   708
  {
wenzelm@65561
   709
    val default_dirs = Isabelle_System.components().filter(is_session_dir(_))
wenzelm@65561
   710
    (default_dirs ::: dirs).map((false, _)) ::: select_dirs.map((true, _))
wenzelm@65561
   711
  }
wenzelm@65561
   712
wenzelm@65415
   713
  def load(options: Options, dirs: List[Path] = Nil, select_dirs: List[Path] = Nil): T =
wenzelm@62631
   714
  {
wenzelm@62635
   715
    def load_dir(select: Boolean, dir: Path): List[(String, Info)] =
wenzelm@62635
   716
      load_root(select, dir) ::: load_roots(select, dir)
wenzelm@62631
   717
wenzelm@62635
   718
    def load_root(select: Boolean, dir: Path): List[(String, Info)] =
wenzelm@62631
   719
      Parser.parse(options, select, dir)
wenzelm@62631
   720
wenzelm@62635
   721
    def load_roots(select: Boolean, dir: Path): List[(String, Info)] =
wenzelm@62631
   722
    {
wenzelm@62631
   723
      val roots = dir + ROOTS
wenzelm@62631
   724
      if (roots.is_file) {
wenzelm@62631
   725
        for {
wenzelm@62631
   726
          line <- split_lines(File.read(roots))
wenzelm@62631
   727
          if !(line == "" || line.startsWith("#"))
wenzelm@62631
   728
          dir1 =
wenzelm@62631
   729
            try { check_session_dir(dir + Path.explode(line)) }
wenzelm@62631
   730
            catch {
wenzelm@62631
   731
              case ERROR(msg) =>
wenzelm@62631
   732
                error(msg + "\nThe error(s) above occurred in session catalog " + roots.toString)
wenzelm@62631
   733
            }
wenzelm@62635
   734
          info <- load_dir(select, dir1)
wenzelm@62631
   735
        } yield info
wenzelm@62631
   736
      }
wenzelm@62631
   737
      else Nil
wenzelm@62631
   738
    }
wenzelm@62631
   739
wenzelm@65415
   740
    make(
wenzelm@62631
   741
      for {
wenzelm@65561
   742
        (select, dir) <- directories(dirs, select_dirs)
wenzelm@65468
   743
        info <- load_dir(select, check_session_dir(dir))
wenzelm@62631
   744
      } yield info)
wenzelm@62631
   745
  }
wenzelm@62632
   746
wenzelm@62632
   747
wenzelm@62637
   748
wenzelm@62704
   749
  /** heap file with SHA1 digest **/
wenzelm@62704
   750
wenzelm@62704
   751
  private val sha1_prefix = "SHA1:"
wenzelm@62704
   752
wenzelm@62704
   753
  def read_heap_digest(heap: Path): Option[String] =
wenzelm@62704
   754
  {
wenzelm@62704
   755
    if (heap.is_file) {
wenzelm@62704
   756
      val file = FileChannel.open(heap.file.toPath, StandardOpenOption.READ)
wenzelm@62704
   757
      try {
wenzelm@62704
   758
        val len = file.size
wenzelm@62704
   759
        val n = sha1_prefix.length + SHA1.digest_length
wenzelm@62704
   760
        if (len >= n) {
wenzelm@62704
   761
          file.position(len - n)
wenzelm@62704
   762
wenzelm@62704
   763
          val buf = ByteBuffer.allocate(n)
wenzelm@62704
   764
          var i = 0
wenzelm@62704
   765
          var m = 0
wenzelm@62704
   766
          do {
wenzelm@62704
   767
            m = file.read(buf)
wenzelm@62704
   768
            if (m != -1) i += m
wenzelm@62704
   769
          }
wenzelm@62704
   770
          while (m != -1 && n > i)
wenzelm@62704
   771
wenzelm@62704
   772
          if (i == n) {
wenzelm@62704
   773
            val prefix = new String(buf.array(), 0, sha1_prefix.length, UTF8.charset)
wenzelm@62704
   774
            val s = new String(buf.array(), sha1_prefix.length, SHA1.digest_length, UTF8.charset)
wenzelm@62704
   775
            if (prefix == sha1_prefix) Some(s) else None
wenzelm@62704
   776
          }
wenzelm@62704
   777
          else None
wenzelm@62704
   778
        }
wenzelm@62704
   779
        else None
wenzelm@62704
   780
      }
wenzelm@62704
   781
      finally { file.close }
wenzelm@62704
   782
    }
wenzelm@62704
   783
    else None
wenzelm@62704
   784
  }
wenzelm@62704
   785
wenzelm@62704
   786
  def write_heap_digest(heap: Path): String =
wenzelm@62704
   787
    read_heap_digest(heap) match {
wenzelm@62704
   788
      case None =>
wenzelm@62704
   789
        val s = SHA1.digest(heap).rep
wenzelm@62704
   790
        File.append(heap, sha1_prefix + s)
wenzelm@62704
   791
        s
wenzelm@62704
   792
      case Some(s) => s
wenzelm@62704
   793
    }
wenzelm@62704
   794
wenzelm@62704
   795
wenzelm@62704
   796
wenzelm@62637
   797
  /** persistent store **/
wenzelm@62632
   798
wenzelm@65296
   799
  object Session_Info
wenzelm@65296
   800
  {
wenzelm@65326
   801
    val session_name = SQL.Column.string("session_name", primary_key = true)
wenzelm@65326
   802
wenzelm@65296
   803
    // Build_Log.Session_Info
wenzelm@65296
   804
    val session_timing = SQL.Column.bytes("session_timing")
wenzelm@65296
   805
    val command_timings = SQL.Column.bytes("command_timings")
wenzelm@65296
   806
    val ml_statistics = SQL.Column.bytes("ml_statistics")
wenzelm@65296
   807
    val task_statistics = SQL.Column.bytes("task_statistics")
wenzelm@65934
   808
    val errors = SQL.Column.bytes("errors")
wenzelm@65296
   809
    val build_log_columns =
wenzelm@65934
   810
      List(session_name, session_timing, command_timings, ml_statistics, task_statistics, errors)
wenzelm@65296
   811
wenzelm@65296
   812
    // Build.Session_Info
wenzelm@65296
   813
    val sources = SQL.Column.string("sources")
wenzelm@65296
   814
    val input_heaps = SQL.Column.string("input_heaps")
wenzelm@65296
   815
    val output_heap = SQL.Column.string("output_heap")
wenzelm@65296
   816
    val return_code = SQL.Column.int("return_code")
wenzelm@65296
   817
    val build_columns = List(sources, input_heaps, output_heap, return_code)
wenzelm@65296
   818
wenzelm@65296
   819
    val table = SQL.Table("isabelle_session_info", build_log_columns ::: build_columns)
wenzelm@65296
   820
  }
wenzelm@65296
   821
wenzelm@62632
   822
  def store(system_mode: Boolean = false): Store = new Store(system_mode)
wenzelm@62632
   823
wenzelm@65857
   824
  class Store private[Sessions](system_mode: Boolean)
wenzelm@62632
   825
  {
wenzelm@65278
   826
    /* file names */
wenzelm@65278
   827
wenzelm@65281
   828
    def database(name: String): Path = Path.basic("log") + Path.basic(name).ext("db")
wenzelm@65278
   829
    def log(name: String): Path = Path.basic("log") + Path.basic(name)
wenzelm@65278
   830
    def log_gz(name: String): Path = log(name).ext("gz")
wenzelm@65278
   831
wenzelm@65278
   832
wenzelm@65286
   833
    /* SQL database content */
wenzelm@65283
   834
wenzelm@65857
   835
    val xml_cache = new XML.Cache()
wenzelm@65857
   836
wenzelm@65320
   837
    def read_bytes(db: SQL.Database, name: String, column: SQL.Column): Bytes =
wenzelm@65698
   838
      db.using_statement(Session_Info.table.select(List(column),
wenzelm@65699
   839
        Session_Info.session_name.where_equal(name)))(stmt =>
wenzelm@65291
   840
      {
wenzelm@65740
   841
        val res = stmt.execute_query()
wenzelm@65740
   842
        if (!res.next()) Bytes.empty else res.bytes(column)
wenzelm@65291
   843
      })
wenzelm@65285
   844
wenzelm@65320
   845
    def read_properties(db: SQL.Database, name: String, column: SQL.Column): List[Properties.T] =
wenzelm@65857
   846
      Properties.uncompress(read_bytes(db, name, column), Some(xml_cache))
wenzelm@65286
   847
wenzelm@65283
   848
wenzelm@62637
   849
    /* output */
wenzelm@62632
   850
wenzelm@62632
   851
    val browser_info: Path =
wenzelm@62632
   852
      if (system_mode) Path.explode("~~/browser_info")
wenzelm@62632
   853
      else Path.explode("$ISABELLE_BROWSER_INFO")
wenzelm@62632
   854
wenzelm@62637
   855
    val output_dir: Path =
wenzelm@62637
   856
      if (system_mode) Path.explode("~~/heaps/$ML_IDENTIFIER")
wenzelm@62637
   857
      else Path.explode("$ISABELLE_OUTPUT")
wenzelm@62637
   858
wenzelm@65298
   859
    override def toString: String = "Store(output_dir = " + output_dir.expand + ")"
wenzelm@65298
   860
wenzelm@62637
   861
    def prepare_output() { Isabelle_System.mkdirs(output_dir + Path.basic("log")) }
wenzelm@62637
   862
wenzelm@62637
   863
wenzelm@62637
   864
    /* input */
wenzelm@62637
   865
wenzelm@62637
   866
    private val input_dirs =
wenzelm@62632
   867
      if (system_mode) List(output_dir)
wenzelm@62633
   868
      else {
wenzelm@62633
   869
        val ml_ident = Path.explode("$ML_IDENTIFIER").expand
wenzelm@62633
   870
        output_dir :: Path.split(Isabelle_System.getenv_strict("ISABELLE_PATH")).map(_ + ml_ident)
wenzelm@62633
   871
      }
wenzelm@62632
   872
wenzelm@65291
   873
    def find_database_heap(name: String): Option[(Path, Option[String])] =
wenzelm@65291
   874
      input_dirs.find(dir => (dir + database(name)).is_file).map(dir =>
wenzelm@65291
   875
        (dir + database(name), read_heap_digest(dir + Path.basic(name))))
wenzelm@62632
   876
wenzelm@65281
   877
    def find_database(name: String): Option[Path] =
wenzelm@65281
   878
      input_dirs.map(_ + database(name)).find(_.is_file)
wenzelm@65281
   879
wenzelm@62637
   880
    def heap(name: String): Path =
wenzelm@65288
   881
      input_dirs.map(_ + Path.basic(name)).find(_.is_file) getOrElse
wenzelm@62637
   882
        error("Unknown logic " + quote(name) + " -- no heap file found in:\n" +
wenzelm@62769
   883
          cat_lines(input_dirs.map(dir => "  " + dir.expand.implode)))
wenzelm@65287
   884
wenzelm@65287
   885
wenzelm@65296
   886
    /* session info */
wenzelm@65281
   887
wenzelm@65296
   888
    def write_session_info(
wenzelm@65318
   889
      db: SQL.Database,
wenzelm@65320
   890
      name: String,
wenzelm@65318
   891
      build_log: Build_Log.Session_Info,
wenzelm@65318
   892
      build: Build.Session_Info)
wenzelm@65281
   893
    {
wenzelm@65281
   894
      db.transaction {
wenzelm@65296
   895
        db.create_table(Session_Info.table)
wenzelm@65698
   896
        db.using_statement(
wenzelm@65699
   897
          Session_Info.table.delete(Session_Info.session_name.where_equal(name)))(_.execute)
wenzelm@65698
   898
        db.using_statement(Session_Info.table.insert())(stmt =>
wenzelm@65281
   899
        {
wenzelm@65748
   900
          stmt.string(1) = name
wenzelm@65857
   901
          stmt.bytes(2) = Properties.encode(build_log.session_timing)
wenzelm@65857
   902
          stmt.bytes(3) = Properties.compress(build_log.command_timings)
wenzelm@65857
   903
          stmt.bytes(4) = Properties.compress(build_log.ml_statistics)
wenzelm@65857
   904
          stmt.bytes(5) = Properties.compress(build_log.task_statistics)
wenzelm@65937
   905
          stmt.bytes(6) = Build_Log.compress_errors(build_log.errors)
wenzelm@65934
   906
          stmt.string(7) = cat_lines(build.sources)
wenzelm@65934
   907
          stmt.string(8) = cat_lines(build.input_heaps)
wenzelm@65934
   908
          stmt.string(9) = build.output_heap getOrElse ""
wenzelm@65934
   909
          stmt.int(10) = build.return_code
wenzelm@65281
   910
          stmt.execute()
wenzelm@65281
   911
        })
wenzelm@65281
   912
      }
wenzelm@65281
   913
    }
wenzelm@65281
   914
wenzelm@65320
   915
    def read_session_timing(db: SQL.Database, name: String): Properties.T =
wenzelm@65857
   916
      Properties.decode(read_bytes(db, name, Session_Info.session_timing), Some(xml_cache))
wenzelm@65286
   917
wenzelm@65320
   918
    def read_command_timings(db: SQL.Database, name: String): List[Properties.T] =
wenzelm@65320
   919
      read_properties(db, name, Session_Info.command_timings)
wenzelm@65286
   920
wenzelm@65320
   921
    def read_ml_statistics(db: SQL.Database, name: String): List[Properties.T] =
wenzelm@65320
   922
      read_properties(db, name, Session_Info.ml_statistics)
wenzelm@65286
   923
wenzelm@65320
   924
    def read_task_statistics(db: SQL.Database, name: String): List[Properties.T] =
wenzelm@65320
   925
      read_properties(db, name, Session_Info.task_statistics)
wenzelm@65286
   926
wenzelm@65937
   927
    def read_errors(db: SQL.Database, name: String): List[String] =
wenzelm@65937
   928
      Build_Log.uncompress_errors(read_bytes(db, name, Session_Info.errors))
wenzelm@65937
   929
wenzelm@65320
   930
    def read_build(db: SQL.Database, name: String): Option[Build.Session_Info] =
wenzelm@65698
   931
      db.using_statement(Session_Info.table.select(Session_Info.build_columns,
wenzelm@65699
   932
        Session_Info.session_name.where_equal(name)))(stmt =>
wenzelm@65285
   933
      {
wenzelm@65740
   934
        val res = stmt.execute_query()
wenzelm@65740
   935
        if (!res.next()) None
wenzelm@65285
   936
        else {
wenzelm@65285
   937
          Some(
wenzelm@65281
   938
            Build.Session_Info(
wenzelm@65740
   939
              split_lines(res.string(Session_Info.sources)),
wenzelm@65740
   940
              split_lines(res.string(Session_Info.input_heaps)),
wenzelm@65740
   941
              res.string(Session_Info.output_heap) match { case "" => None case s => Some(s) },
wenzelm@65740
   942
              res.int(Session_Info.return_code)))
wenzelm@65281
   943
        }
wenzelm@65281
   944
      })
wenzelm@65281
   945
  }
wenzelm@62631
   946
}