1 files changed, 52 insertions, 0 deletions

diff --git a/src/compiler/scala/tools/nsc/GenericRunnerCommand.scala b/src/compiler/scala/tools/nsc/GenericRunnerCommand.scala
new file mode 100644
index 0000000000..7fbf0d8f21
--- /dev/null
+++ b/src/compiler/scala/tools/nsc/GenericRunnerCommand.scala
@@ -0,0 +1,52 @@
+package scala.tools.nsc
+
+/** A command for ScriptRunner */
+class GenericRunnerCommand(allargs: List[String], error: String=>Unit) {
+  def this(allargs: List[String]) = this(allargs, str:String => {
+    Console.println("Error: " + str)
+  })
+
+  /** Settings specified by this command */
+  val settings = new GenericRunnerSettings(error)
+
+  /** Whether the command was parsed correctly */
+  var ok = true
+
+  /** What to run.  If it is None, then the interpreter should be started */
+  var thingToRun: Option[String] = None
+
+  /** Arguments to pass to the object or script to run */
+  var arguments: List[String] = Nil
+
+  private def parseArguments: Unit = {
+    var args = allargs
+
+    while (!args.isEmpty && ok && args.head.startsWith("-")) {
+      val args0 = args
+      for (val setting <- settings.allSettings)
+        args = setting.tryToSet(args)
+      if (args eq args0) {
+        error("unknown option: '" + args.head + "'")
+        ok = false
+      }
+    }
+
+    if(!args.isEmpty) {
+      thingToRun = Some(args.head)
+      arguments = args.tail
+    }
+  }
+  parseArguments
+
+  val usageMessage = {
+    "scala [ <compiler-option> | -howtorun:how ]... [<torun> <arguments>]\n" +
+    "\n" +
+    "<compiler-option>'s are as for scalac; see scalac -help.\n" +
+    "<torun>, if present, is an object or script file to run.\n" +
+    "If no <torun> is present, run an interactive interpreter.\n" +
+    "-howtorun allows explicitly specifying how to run <torun>:\n" +
+    "    script: it is a script file\n" +
+    "    object: it is an object name\n" +
+    "    guess: (the default) try to guess\n"
+  }
+}