--- a/src/Pure/PIDE/resources.scala Tue Oct 31 15:36:50 2017 +0100
+++ b/src/Pure/PIDE/resources.scala Tue Oct 31 15:55:50 2017 +0100
@@ -17,7 +17,7 @@
val session_base: Sessions.Base,
val log: Logger = No_Logger)
{
- val thy_info = new Thy_Info(this)
+ resources =>
def thy_path(path: Path): Path = path.ext("thy")
@@ -213,7 +213,113 @@
previous: Document.Version,
doc_blobs: Document.Blobs,
edits: List[Document.Edit_Text]): Session.Change =
- Thy_Syntax.parse_change(this, reparse_limit, previous, doc_blobs, edits)
+ Thy_Syntax.parse_change(resources, reparse_limit, previous, doc_blobs, edits)
def commit(change: Session.Change) { }
+
+
+ /* theory and file dependencies */
+
+ object Dependencies
+ {
+ val empty = new Dependencies(Nil, Set.empty)
+ }
+
+ final class Dependencies private(
+ rev_entries: List[Document.Node.Entry],
+ val seen: Set[Document.Node.Name])
+ {
+ def :: (entry: Document.Node.Entry): Dependencies =
+ new Dependencies(entry :: rev_entries, seen)
+
+ def + (name: Document.Node.Name): Dependencies =
+ new Dependencies(rev_entries, seen + name)
+
+ def entries: List[Document.Node.Entry] = rev_entries.reverse
+ def names: List[Document.Node.Name] = entries.map(_.name)
+
+ def errors: List[String] = entries.flatMap(_.header.errors)
+
+ lazy val loaded_theories: Graph[String, Outer_Syntax] =
+ (session_base.loaded_theories /: entries)({ case (graph, entry) =>
+ val name = entry.name.theory
+ val imports = entry.header.imports.map(p => p._1.theory)
+
+ val graph1 = (graph /: (name :: imports))(_.default_node(_, Outer_Syntax.empty))
+ val graph2 = (graph1 /: imports)(_.add_edge(_, name))
+
+ val syntax0 = if (name == Thy_Header.PURE) List(Thy_Header.bootstrap_syntax) else Nil
+ val syntax1 = (name :: graph2.imm_preds(name).toList).map(graph2.get_node(_))
+ val syntax = Outer_Syntax.merge(syntax0 ::: syntax1) + entry.header
+
+ graph2.map_node(name, _ => syntax)
+ })
+
+ def loaded_files: List[(String, List[Path])] =
+ {
+ names.map(_.theory) zip
+ Par_List.map((e: () => List[Path]) => e(),
+ names.map(name => resources.loaded_files(loaded_theories.get_node(name.theory), name)))
+ }
+
+ def imported_files: List[Path] =
+ {
+ val base_theories =
+ loaded_theories.all_preds(names.map(_.theory)).
+ filter(session_base.loaded_theories.defined(_))
+
+ base_theories.map(theory => session_base.known.theories(theory).path) :::
+ base_theories.flatMap(session_base.known.loaded_files(_))
+ }
+
+ lazy val overall_syntax: Outer_Syntax =
+ Outer_Syntax.merge(loaded_theories.maximals.map(loaded_theories.get_node(_)))
+
+ override def toString: String = entries.toString
+ }
+
+ private def show_path(names: List[Document.Node.Name]): String =
+ names.map(name => quote(name.theory)).mkString(" via ")
+
+ private def cycle_msg(names: List[Document.Node.Name]): String =
+ "Cyclic dependency of " + show_path(names)
+
+ private def required_by(initiators: List[Document.Node.Name]): String =
+ if (initiators.isEmpty) ""
+ else "\n(required by " + show_path(initiators.reverse) + ")"
+
+ private def require_thy(initiators: List[Document.Node.Name], required: Dependencies,
+ thy: (Document.Node.Name, Position.T)): Dependencies =
+ {
+ val (name, pos) = thy
+
+ def message: String =
+ "The error(s) above occurred for theory " + quote(name.theory) +
+ required_by(initiators) + Position.here(pos)
+
+ val required1 = required + name
+ if (required.seen(name)) required
+ else if (session_base.loaded_theory(name)) required1
+ else {
+ try {
+ if (initiators.contains(name)) error(cycle_msg(initiators))
+ val header =
+ try { check_thy(name, Token.Pos.file(name.node)).cat_errors(message) }
+ catch { case ERROR(msg) => cat_error(msg, message) }
+ Document.Node.Entry(name, header) ::
+ require_thys(name :: initiators, required1, header.imports)
+ }
+ catch {
+ case e: Throwable =>
+ Document.Node.Entry(name, Document.Node.bad_header(Exn.message(e))) :: required1
+ }
+ }
+ }
+
+ private def require_thys(initiators: List[Document.Node.Name], required: Dependencies,
+ thys: List[(Document.Node.Name, Position.T)]): Dependencies =
+ (required /: thys)(require_thy(initiators, _, _))
+
+ def dependencies(thys: List[(Document.Node.Name, Position.T)]): Dependencies =
+ require_thys(Nil, Dependencies.empty, thys)
}