src/Pure/System/isar_document.scala

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/System/isar_document.scala	Sat Aug 14 18:43:45 2010 +0200
@@ -0,0 +1,67 @@
+/*  Title:      Pure/System/isar_document.scala
+    Author:     Makarius
+
+Interactive Isar documents.
+*/
+
+package isabelle
+
+
+object Isar_Document
+{
+  /* protocol messages */
+
+  object Assign {
+    def unapply(msg: XML.Tree): Option[List[(Document.Command_ID, Document.Exec_ID)]] =
+      msg match {
+        case XML.Elem(Markup.Assign, edits) =>
+          val id_edits = edits.map(Edit.unapply)
+          if (id_edits.forall(_.isDefined)) Some(id_edits.map(_.get))
+          else None
+        case _ => None
+      }
+  }
+
+  object Edit {
+    def unapply(msg: XML.Tree): Option[(Document.Command_ID, Document.Exec_ID)] =
+      msg match {
+        case XML.Elem(Markup(Markup.EDIT, List((Markup.ID, cmd_id), (Markup.STATE, state_id))), Nil) =>
+          (Markup.parse_long(cmd_id), Markup.parse_long(state_id)) match {
+            case (Some(i), Some(j)) => Some((i, j))
+            case _ => None
+          }
+        case _ => None
+      }
+  }
+}
+
+
+trait Isar_Document extends Isabelle_Process
+{
+  import Isar_Document._
+
+
+  /* commands */
+
+  def define_command(id: Document.Command_ID, text: String): Unit =
+    input("Isar_Document.define_command", Document.print_id(id), text)
+
+
+  /* documents */
+
+  def edit_document(old_id: Document.Version_ID, new_id: Document.Version_ID,
+      edits: List[Document.Edit[Document.Command_ID]])
+  {
+    def make_id1(id1: Option[Document.Command_ID]): XML.Body =
+      XML_Data.make_long(id1 getOrElse Document.NO_ID)
+
+    val arg =
+      XML_Data.make_list(
+        XML_Data.make_pair(XML_Data.make_string)(
+          XML_Data.make_option(XML_Data.make_list(
+              XML_Data.make_pair(make_id1)(XML_Data.make_option(XML_Data.make_long))))))(edits)
+
+    input("Isar_Document.edit_document",
+      Document.print_id(old_id), Document.print_id(new_id), YXML.string_of_body(arg))
+  }
+}