1 files changed, 42 insertions, 0 deletions
diff --git a/src/partest/scala/tools/partest/nest/ReflectiveRunner.scala b/src/partest/scala/tools/partest/nest/ReflectiveRunner.scala
new file mode 100644
index 0000000000..228eb7ff6c
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+++ b/src/partest/scala/tools/partest/nest/ReflectiveRunner.scala
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+/* NEST (New Scala Test)
+ * Copyright 2007-2008 LAMP/EPFL
+ * @author Philipp Haller
+ */
+
+// $Id: $
+
+package scala.tools.partest.nest
+
+/* This class is used to load an instance of DirectRunner using
+ * a custom class loader.
+ * The purpose is to "auto-detect" a good classpath for the
+ * rest of the classes (Worker, CompileManager etc.), so that
+ * the main NestRunner can be started merely by putting its
+ * class on the classpath (ideally).
+ */
+class ReflectiveRunner {
+  // we might also use FileManager.CLASSPATH
+  // to use the same classes as used by `scala` that
+  // was used to start the runner.
+
+  import FileManager.{latestCompFile, latestLibFile, latestActFile,
+                      latestPartestFile, latestFjbgFile}
+
+  val sepUrls = Array(latestCompFile.toURL, latestLibFile.toURL,
+                      latestActFile.toURL, latestPartestFile.toURL,
+                      latestFjbgFile.toURL)
+  val sepLoader = new java.net.URLClassLoader(sepUrls, null)
+
+  val sepRunnerClass =
+    sepLoader.loadClass("scala.tools.partest.nest.DirectRunner")
+  val sepRunner = sepRunnerClass.newInstance()
+
+  val stringClass = Class.forName("java.lang.String")
+  val sepMainMethod =
+    sepRunnerClass.getMethod("main", Array(stringClass))
+
+  def main(args: String) {
+    val cargs: Array[AnyRef] = Array(args)
+    sepMainMethod.invoke(sepRunner, cargs)
+  }
+}