added infix types and {...} syntax for tuples.

changed a confusing error message "value this is not a member of T".

1 files changed, 7 insertions, 1 deletions

diff --git a/src/compiler/scala/tools/nsc/ast/parser/TreeBuilder.scala b/src/compiler/scala/tools/nsc/ast/parser/TreeBuilder.scala
index e98793f736..4060d8f619 100644
--- a/src/compiler/scala/tools/nsc/ast/parser/TreeBuilder.scala
+++ b/src/compiler/scala/tools/nsc/ast/parser/TreeBuilder.scala
@@ -94,12 +94,18 @@ abstract class TreeBuilder {
     Apply(scalaDot(if (isType) newTypeName(tupString) else newTermName(tupString)), trees)
   }
 
-  private def makeTupleTerm(trees: List[Tree]): Tree = trees match {
+  def makeTupleTerm(trees: List[Tree]): Tree = trees match {
     case List() => Literal(())
     case List(tree) => tree
     case _ => makeTuple(trees, false)
   }
 
+  def makeTupleType(trees: List[Tree]): Tree = trees match {
+    case List() => scalaUnitConstr
+    case List(tree) => tree
+    case _ => AppliedTypeTree(scalaDot(newTypeName("Tuple" + trees.length)), trees)
+  }
+
   /** If tree is a variable pattern, return Some("its name and type").
    *  Otherwise return none */
   private def matchVarPattern(tree: Tree): Option[Pair[Name, Tree]] = tree match {