Fix for #3621.

Added varargs annotation.

Review by Rytz.

3 files changed, 21 insertions, 0 deletions

diff --git a/src/library/scala/annotation/varargs.scala b/src/library/scala/annotation/varargs.scala
new file mode 100644
index 0000000000..ad6a3f9bd4
--- /dev/null
+++ b/src/library/scala/annotation/varargs.scala
@@ -0,0 +1,18 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2002-2010, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+package scala.annotation
+
+/** <p>
+ *    A method annotation which instructs the compiler to generate a
+ *    Java varargs-style forwarder method for interop. This annotation can
+ *    only be applied to methods with repeated parameters.
+ *  </p>
+ *
+ *  @since 2.9
+ */
+final class varargs extends StaticAnnotation
diff --git a/src/library/scala/reflect/generic/Flags.scala b/src/library/scala/reflect/generic/Flags.scala
index 1988e9df90..405069f8b6 100755
--- a/src/library/scala/reflect/generic/Flags.scala
+++ b/src/library/scala/reflect/generic/Flags.scala
@@ -78,6 +78,8 @@ class Flags extends ModifierFlags {
   final val SPECIALIZED   = 0x10000000000L// symbol is a generated specialized member
   final val VBRIDGE       = 0x40000000000L// symbol is a varargs bridge
 
+  final val VARARGS       = 0x80000000000L// symbol is a Java-style varargs method
+
   // pickling and unpickling of flags
 
   // The flags from 0x001 to 0x800 are different in the raw flags
diff --git a/src/library/scala/reflect/generic/Symbols.scala b/src/library/scala/reflect/generic/Symbols.scala
index 0362e497e5..4dcf80efe3 100755
--- a/src/library/scala/reflect/generic/Symbols.scala
+++ b/src/library/scala/reflect/generic/Symbols.scala
@@ -138,6 +138,7 @@ trait Symbols { self: Universe =>
     final def isImplClass = isClass && hasFlag(IMPLCLASS) // Is this symbol an implementation class for a mixin?
     final def isLazyAccessor = isLazy && lazyAccessor != NoSymbol
     final def isMethod = isTerm && hasFlag(METHOD)
+    final def isVarargsMethod = isMethod && hasFlag(VARARGS)
     final def isModule = isTerm && hasFlag(MODULE)
     final def isModuleClass = isClass && hasFlag(MODULE)
     final def isOverloaded = hasFlag(OVERLOADED)