1 files changed, 71 insertions, 0 deletions
diff --git a/src/compiler/scala/tools/nsc/Main.scala b/src/compiler/scala/tools/nsc/Main.scala
new file mode 100644
index 0000000000..58b352db61
--- /dev/null
+++ b/src/compiler/scala/tools/nsc/Main.scala
@@ -0,0 +1,71 @@
+/* NSC -- new scala compiler
+ * Copyright 2005 LAMP/EPFL
+ * @author  Martin Odersky
+ */
+// $Id$
+package scala.tools.nsc;
+
+import scala.tools.nsc.util.{Position};
+import scala.tools.nsc.reporters.{Reporter, ConsoleReporter};
+
+/** The main class for NSC, a compiler for the programming
+ *  language Scala.
+ */
+object Main extends Object with EvalLoop {
+
+  val PRODUCT: String =
+    System.getProperty("scala.product", "scalac");
+  val VERSION: String =
+    System.getProperty("scala.version", "unknown version");
+  val versionMsg = PRODUCT + " " + VERSION + " -- (c) 2002-05 LAMP/EPFL";
+  val prompt = "\nnsc> ";
+
+  private var reporter: ConsoleReporter = _;
+
+  def error(msg: String): unit =
+    reporter.error(new Position(PRODUCT),
+                   msg + "\n  " + PRODUCT + " -help  gives more information");
+
+  def errors() = reporter.errors;
+
+  def resident(compiler: Global): unit = {
+    loop(line => {
+      val args = List.fromString(line, ' ');
+      val command = new CompilerCommand(args, error, true);
+      (new compiler.Run) compile command.files
+    })
+  }
+
+  def process(args: Array[String]): unit = {
+    reporter = new ConsoleReporter();
+    val command = new CompilerCommand(List.fromArray(args), error, false);
+    reporter.prompt = command.settings.prompt.value;
+    if (command.settings.version.value)
+      reporter.info(null, versionMsg, true)
+    else if (command.settings.help.value)
+      reporter.info(null, command.usageMsg, true)
+    else {
+      try {
+        val compiler = new Global(command.settings, reporter);
+        if (command.settings.resident.value)
+          resident(compiler);
+        else if (command.files.isEmpty)
+            reporter.info(null, command.usageMsg, true)
+        else
+          (new compiler.Run) compile command.files;
+      } catch {
+        case ex @ FatalError(msg) =>
+          if (command.settings.debug.value)
+            ex.printStackTrace();
+        reporter.error(null, "fatal error: " + msg);
+      }
+      reporter.printSummary()
+    }
+  }
+
+  def main(args: Array[String]): unit = {
+    process(args);
+    System.exit(if (reporter.errors > 0) 1 else 0);
+  }
+
+}