macros: refactoring of fast track infrastructure

As a result, hardwired macros don't need implementation stubs.
This is very important, because in a few commits scala.reflect.makro.Context
will move out from scala-library.jar.

Also adding fast track entries doesn't require jumping through hoops
with PDTs. It's as simple as defining PartialFunction[Tree, Any].

1 files changed, 13 insertions, 0 deletions

diff --git a/test/files/run/macro-invalidusage-partialapplication-with-tparams/Impls_Macros_1.scala b/test/files/run/macro-invalidusage-partialapplication-with-tparams/Impls_Macros_1.scala
new file mode 100644
index 0000000000..67a19a6d62
--- /dev/null
+++ b/test/files/run/macro-invalidusage-partialapplication-with-tparams/Impls_Macros_1.scala
@@ -0,0 +1,13 @@
+import scala.reflect.makro.{Context => Ctx}
+
+object Impls {
+  def foo[T: c.TypeTag](c: Ctx)(x: c.Expr[T]) = {
+    import c.universe._
+    val body = Apply(Select(Ident(definitions.PredefModule), newTermName("println")), List(Literal(Constant(x.tree.toString))))
+    c.Expr[Unit](body)
+  }
+}
+
+object Macros {
+  def foo[T](x: T) = macro Impls.foo[T]
+}
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