* TupleN extends ProductN, again (genprod updated)

* better comments and parameter names in scala.xml.MetaData typechecker
* now handles special cases (n=0, n=1) for unapply correctly

* * even if one returns a Option[Product1[T]]
* typechecker now handles unapply return types correctly
* * e.g. when returning Option[{A,B}] instead of Option[Product2[A,B]]

1 files changed, 11 insertions, 11 deletions

diff --git a/src/library/scala/Product4.scala b/src/library/scala/Product4.scala
index ac98f6a9b9..fbfd8e6ac8 100644
--- a/src/library/scala/Product4.scala
+++ b/src/library/scala/Product4.scala
@@ -7,17 +7,17 @@
 **                          |/                                          **
 \*                                                                      */
 
-// $Id: genprod.scala 9494 2006-12-11 11:35:38Z odersky $
+// $Id$
 
-// generated by genprod on Tue Dec 12 11:32:13 CET 2006
+// generated by genprod on Tue Jan 02 15:19:32 CET 2007
 
 package scala
 
 import Predef._
 
 object Product4 {
-  def unapply[T1, T2, T3, T4](x:Any): Option[Product4[T1, T2, T3, T4]] =
-    if(x.isInstanceOf[Product4[T1, T2, T3, T4]]) Some(x.asInstanceOf[Product4[T1, T2, T3, T4]]) else None
+  def unapply[T1, T2, T3, T4](x: Product4[T1, T2, T3, T4]): Some[Product4[T1, T2, T3, T4]] =
+    Some(x)
 }
 
 /** Product4 is a cartesian product of 4 components
@@ -47,16 +47,16 @@ trait Product4[+T1, +T2, +T3, +T4] extends Product {
   }
 
   /** projection of this product */
-  def _1:T1
+  def _1: T1
 
-  /** projection of this product */
-  def _2:T2
+/** projection of this product */
+  def _2: T2
 
-  /** projection of this product */
-  def _3:T3
+/** projection of this product */
+  def _3: T3
 
-  /** projection of this product */
-  def _4:T4
+/** projection of this product */
+  def _4: T4
 
 
 }