src/Pure/Tools/imports.scala
author wenzelm
Tue Jun 06 23:13:53 2017 +0200 (2017-06-06)
changeset 66025 96f86c613a9f
parent 65833 95fd3b9888e6
child 66028 14c014a43278
permissions -rw-r--r--
clarified import of loaded theory;
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/*  Title:      Pure/Tools/imports.scala
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    Author:     Makarius
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Maintain theory imports wrt. session structure.
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*/
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package isabelle
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import java.io.{File => JFile}
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object Imports
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{
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  /* repository files */
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  def repository_files(progress: Progress, start: Path, pred: JFile => Boolean = _ => true)
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      : List[JFile] =
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    Mercurial.find_repository(start) match {
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      case None =>
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        progress.echo_warning("Ignoring directory " + start + " (no Mercurial repository)")
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        Nil
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      case Some(hg) =>
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        val start_path = start.canonical_file.toPath
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        for {
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          name <- hg.known_files()
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          file = (hg.root + Path.explode(name)).file
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          if pred(file) && file.getCanonicalFile.toPath.startsWith(start_path)
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        } yield file
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    }
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  /* update imports */
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  sealed case class Update(range: Text.Range, old_text: String, new_text: String)
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  {
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    def edits: List[Text.Edit] =
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      Text.Edit.replace(range.start, old_text, new_text)
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    override def toString: String =
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      range.toString + ": " + old_text + " -> " + new_text
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  }
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  def update_name(keywords: Keyword.Keywords, pos: Position.T, update: String => String)
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    : Option[(JFile, Update)] =
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  {
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    val file =
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      pos match {
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        case Position.File(file) => Path.explode(file).canonical_file
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        case _ => error("Missing file in position" + Position.here(pos))
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      }
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    val text = File.read(file)
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    val range =
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      pos match {
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        case Position.Range(symbol_range) => Symbol.Text_Chunk(text).decode(symbol_range)
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        case _ => error("Missing range in position" + Position.here(pos))
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      }
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    Token.read_name(keywords, range.substring(text)) match {
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      case Some(tok) =>
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        val s1 = tok.source
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        val s2 = Token.quote_name(keywords, update(tok.content))
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        if (s1 == s2) None else Some((file, Update(range, s1, s2)))
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      case None => error("Name token expected" + Position.here(pos))
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    }
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  }
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  /* collective operations */
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  def imports(
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    options: Options,
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    operation_imports: Boolean = false,
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    operation_repository_files: Boolean = false,
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    operation_update: Boolean = false,
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    progress: Progress = No_Progress,
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    selection: Sessions.Selection = Sessions.Selection.empty,
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    dirs: List[Path] = Nil,
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    select_dirs: List[Path] = Nil,
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    verbose: Boolean = false) =
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  {
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    val full_sessions = Sessions.load(options, dirs, select_dirs)
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    val (selected, selected_sessions) = full_sessions.selection(selection)
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    val deps =
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      Sessions.deps(selected_sessions, progress = progress, verbose = verbose,
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        global_theories = full_sessions.global_theories,
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        all_known = true)
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    val root_keywords = Sessions.root_syntax.keywords
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    if (operation_imports) {
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      progress.echo("\nPotential session imports:")
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      selected.sorted.foreach(session_name =>
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      {
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        val info = full_sessions(session_name)
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        val session_resources = new Resources(deps(session_name))
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        val declared_imports =
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          full_sessions.imports_ancestors(session_name).toSet + session_name
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        val extra_imports =
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          (for {
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            (_, a) <- session_resources.session_base.known.theories.iterator
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            if session_resources.theory_qualifier(a) == info.theory_qualifier
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            b <- deps.all_known.get_file(Path.explode(a.node).file)
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            qualifier = session_resources.theory_qualifier(b)
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            if !declared_imports.contains(qualifier)
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          } yield qualifier).toSet
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        if (extra_imports.nonEmpty) {
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          progress.echo("session " + Token.quote_name(root_keywords, session_name) + ": " +
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            extra_imports.toList.sorted.map(Token.quote_name(root_keywords, _)).mkString(" "))
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        }
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      })
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    }
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    if (operation_repository_files) {
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      progress.echo("\nMercurial files check:")
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      val unused_files =
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        for {
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          (_, dir) <- Sessions.directories(dirs, select_dirs)
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          file <- repository_files(progress, dir, file => file.getName.endsWith(".thy"))
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          if deps.all_known.get_file(file).isEmpty
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        } yield file
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      unused_files.foreach(file => progress.echo("unused file " + quote(file.toString)))
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    }
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    if (operation_update) {
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      progress.echo("\nUpdate theory imports:")
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      val updates =
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        selected.flatMap(session_name =>
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        {
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          val info = full_sessions(session_name)
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          val session_base = deps(session_name)
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          val session_resources = new Resources(session_base)
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          val imports_resources = new Resources(session_base.get_imports)
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          def standard_import(qualifier: String, dir: String, s: String): String =
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          {
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            val name = imports_resources.import_name(qualifier, dir, s)
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            val s1 =
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              if (session_base.loaded_theory(name)) name.theory
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              else {
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                imports_resources.session_base.known.get_file(Path.explode(name.node).file) match {
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                  case Some(name1) if session_resources.theory_qualifier(name1) != qualifier =>
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                    name1.theory
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                  case Some(name1) if Thy_Header.is_base_name(s) =>
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                    name1.theory_base_name
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                  case _ => s
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                }
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              }
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            val name2 = imports_resources.import_name(qualifier, dir, s1)
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            if (name.node == name2.node) s1 else s
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          }
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          val updates_root =
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            for {
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              (_, pos) <- info.theories.flatMap(_._2)
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              upd <- update_name(root_keywords, pos,
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                standard_import(info.theory_qualifier, info.dir.implode, _))
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            } yield upd
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          val updates_theories =
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            for {
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              (_, name) <- session_base.known.theories_local.toList
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              (_, pos) <- session_resources.check_thy(name, Token.Pos.file(name.node)).imports
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              upd <- update_name(session_base.syntax.keywords, pos,
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                standard_import(session_resources.theory_qualifier(name), name.master_dir, _))
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            } yield upd
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          updates_root ::: updates_theories
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        })
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      val file_updates = (Multi_Map.empty[JFile, Update] /: updates)(_ + _)
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      val conflicts =
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        file_updates.iterator_list.flatMap({ case (file, upds) =>
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          Library.duplicates(upds.sortBy(_.range.start),
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            (x: Update, y: Update) => x.range overlaps y.range) match
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          {
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            case Nil => None
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            case bad => Some((file, bad))
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          }
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        })
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      if (conflicts.nonEmpty)
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        error(cat_lines(
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          conflicts.map({ case (file, bad) =>
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            "Conflicting updates for file " + file + bad.mkString("\n  ", "\n  ", "") })))
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      for ((file, upds) <- file_updates.iterator_list.toList.sortBy(p => p._1.toString)) {
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        progress.echo("file " + quote(file.toString))
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        val edits =
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          upds.sortBy(upd => - upd.range.start).flatMap(upd =>
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            Text.Edit.replace(upd.range.start, upd.old_text, upd.new_text))
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        val new_text =
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          (File.read(file) /: edits)({ case (text, edit) =>
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            edit.edit(text, 0) match {
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              case (None, text1) => text1
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              case (Some(_), _) => error("Failed to apply edit " + edit + " to file " + file)
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            }
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          })
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        File.write_backup2(Path.explode(File.standard_path(file)), new_text)
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      }
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    }
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  }
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  /* Isabelle tool wrapper */
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  val isabelle_tool =
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    Isabelle_Tool("imports", "maintain theory imports wrt. session structure", args =>
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    {
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      var select_dirs: List[Path] = Nil
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      var operation_imports = false
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      var operation_repository_files = false
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      var requirements = false
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      var operation_update = false
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      var exclude_session_groups: List[String] = Nil
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      var all_sessions = false
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      var dirs: List[Path] = Nil
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      var session_groups: List[String] = Nil
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      var options = Options.init()
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      var verbose = false
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      var exclude_sessions: List[String] = Nil
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      val getopts = Getopts("""
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Usage: isabelle imports [OPTIONS] [SESSIONS ...]
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  Options are:
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    -D DIR       include session directory and select its sessions
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    -I           operation: report potential session imports
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    -M           operation: Mercurial files check for imported theory files
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    -R           operate on requirements of selected sessions
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    -U           operation: update theory imports to use session qualifiers
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    -X NAME      exclude sessions from group NAME and all descendants
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    -a           select all sessions
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    -d DIR       include session directory
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    -g NAME      select session group NAME
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    -o OPTION    override Isabelle system OPTION (via NAME=VAL or NAME)
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    -v           verbose
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    -x NAME      exclude session NAME and all descendants
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  Maintain theory imports wrt. session structure. At least one operation
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  needs to be specified (see options -I -M -U).
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""",
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      "D:" -> (arg => select_dirs = select_dirs ::: List(Path.explode(arg))),
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      "I" -> (_ => operation_imports = true),
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      "M" -> (_ => operation_repository_files = true),
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      "R" -> (_ => requirements = true),
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      "U" -> (_ => operation_update = true),
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      "X:" -> (arg => exclude_session_groups = exclude_session_groups ::: List(arg)),
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      "a" -> (_ => all_sessions = true),
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      "d:" -> (arg => dirs = dirs ::: List(Path.explode(arg))),
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      "g:" -> (arg => session_groups = session_groups ::: List(arg)),
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      "o:" -> (arg => options = options + arg),
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      "v" -> (_ => verbose = true),
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      "x:" -> (arg => exclude_sessions = exclude_sessions ::: List(arg)))
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      val sessions = getopts(args)
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      if (args.isEmpty || !(operation_imports || operation_repository_files || operation_update))
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        getopts.usage()
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      val selection =
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        Sessions.Selection(requirements, all_sessions, exclude_session_groups,
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          exclude_sessions, session_groups, sessions)
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      val progress = new Console_Progress(verbose = verbose)
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      imports(options, operation_imports = operation_imports,
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        operation_repository_files = operation_repository_files, operation_update = operation_update,
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        progress = progress, selection = selection, dirs = dirs, select_dirs = select_dirs,
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        verbose = verbose)
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    })
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}