1 files changed, 67 insertions, 0 deletions
diff --git a/src/compiler/scala/tools/nsc/BuildManager.scala b/src/compiler/scala/tools/nsc/BuildManager.scala
new file mode 100644
index 0000000000..6ee1e6547b
--- /dev/null
+++ b/src/compiler/scala/tools/nsc/BuildManager.scala
@@ -0,0 +1,67 @@
+package scala.tools.nsc
+
+import scala.collection._
+
+import scala.tools.nsc.reporters.{Reporter, ConsoleReporter}
+import util.FakePos
+
+import dependencies._
+import nsc.io.AbstractFile
+
+trait BuildManager {
+
+  /** Add the given source files to the managed build process. */
+  def addSourceFiles(files: Set[AbstractFile])
+
+  /** Remove the given files from the managed build process. */
+  def removeFiles(files: Set[AbstractFile])
+
+  /** The given files have been modified by the user. Recompile
+   *  them and their dependent files.
+   */
+  def update(files: Set[AbstractFile])
+
+  /** Load saved dependency information. */
+  def loadFrom(file: AbstractFile)
+
+  /** Save dependency information to `file'. */
+  def saveTo(file: AbstractFile)
+
+  def compiler: Global
+}
+
+
+
+/** Simple driver for testing the build manager. It presents
+ *  the user to a 'resident compiler' prompt. Each line is
+ *  interpreted as a set of files that have changed. The builder
+ *  then derives the dependent files and recompiles them.
+ */
+object BuildManagerTest extends EvalLoop {
+
+  def prompt = "builder > "
+
+  def error(msg: String) {
+    println(msg + "\n  scalac -help  gives more information")
+  }
+
+  def main(args: Array[String]) {
+    implicit def filesToSet(fs: List[String]): Set[AbstractFile] =
+      Set.empty ++ (fs map AbstractFile.getFile)
+
+    val settings = new Settings(error)
+    val command = new CompilerCommand(List.fromArray(args), settings, error, false)
+//    settings.make.value = "off"
+    val buildManager: BuildManager = new SimpleBuildManager(settings)
+
+    buildManager.addSourceFiles(command.files)
+
+    // enter resident mode
+    loop { line =>
+      val args = List.fromString(line, ' ')
+      val command = new CompilerCommand(args, new Settings(error), error, true)
+      buildManager.update(command.files)
+    }
+
+  }
+}