Add varargs bridge methods

Distinguish translations between Java and Scala varargs methods
and add bridges where needed.

1 files changed, 26 insertions, 0 deletions

diff --git a/src/dotty/tools/dotc/transform/TreeGen.scala b/src/dotty/tools/dotc/transform/TreeGen.scala
new file mode 100644
index 000000000..7997aa308
--- /dev/null
+++ b/src/dotty/tools/dotc/transform/TreeGen.scala
@@ -0,0 +1,26 @@
+package dotty.tools.dotc
+package transform
+
+import core._
+import Symbols._, Contexts._, Types._, Names._, StdNames._
+import ast._
+import Trees._
+import TypeUtils._
+
+object TreeGen {
+
+  import tpd._
+
+  def wrapArrayMethodName(elemtp: Type)(implicit ctx: Context): TermName = {
+    val elemCls = elemtp.classSymbol
+    if (elemCls.isPrimitiveValueClass) nme.wrapXArray(elemCls.name)
+    else if (elemCls.derivesFrom(defn.ObjectClass) && !elemCls.isPhantomClass) nme.wrapRefArray
+    else nme.genericWrapArray
+  }
+
+  def wrapArray(tree: Tree, elemtp: Type)(implicit ctx: Context): Tree =
+    ref(defn.ScalaPredefModule)
+      .select(wrapArrayMethodName(elemtp))
+      .appliedToTypes(if (elemtp.isPrimitiveValueType) Nil else elemtp :: Nil)
+      .appliedTo(tree)
+}
\ No newline at end of file