Refactoring and temporary commit before finishing the fix.

1 files changed, 21 insertions, 0 deletions

diff --git a/project/ScalaToolRunner.scala b/project/ScalaToolRunner.scala
new file mode 100644
index 0000000000..d7338a54b3
--- /dev/null
+++ b/project/ScalaToolRunner.scala
@@ -0,0 +1,21 @@
+import sbt._
+import Keys._
+
+/** Reflection helper that runs ScalaTool. 
+ * TODO - When SBT is on 2.10.x try to use Dynamic + Reflection. COULD BE FUN.
+ */
+class ScalaToolRunner(classpath: Classpath) {
+  // TODO - Don't use the ant task directly...
+  lazy val classLoader        = new java.net.URLClassLoader(classpath.map(_.data.toURI.toURL).toArray, null)
+  lazy val mainClass          = classLoader.loadClass("scala.tools.ant.ScalaTool")
+  lazy val executeMethod      = mainClass.getMethod("execute")
+  lazy val setFileMethod      = mainClass.getMethod("setFile", classOf[java.io.File])
+  lazy val setClassMethod     = mainClass.getMethod("setClass", classOf[String])
+  lazy val setClasspathMethod = mainClass.getMethod("setClassPath", classOf[String])
+  lazy val instance           = mainClass.newInstance()
+    
+  def setClass(cls: String): Unit    = setClassMethod.invoke(instance, cls)
+  def setFile(file: File): Unit      = setFileMethod.invoke(instance, file)
+  def setClasspath(cp: String): Unit = setClasspathMethod.invoke(instance, cp)
+  def execute(): Unit                = executeMethod.invoke(instance)
+}