Merge pull request #3309 from xeno-by/topic/expand-dynamic

SI-7777 SI-8006 assorted fixes for dynamics

3 files changed, 30 insertions, 0 deletions

diff --git a/test/files/run/t7777.check b/test/files/run/t7777.check
new file mode 100644
index 0000000000..162ff2d2a2
--- /dev/null
+++ b/test/files/run/t7777.check
@@ -0,0 +1,7 @@
+foo(1, 2)
+bar(4, 5)
+foo(3)
+bar(7)
+apply(6)
+apply(9)
+foo(8)
diff --git a/test/files/run/t7777/Macros_1.scala b/test/files/run/t7777/Macros_1.scala
new file mode 100644
index 0000000000..459ab3edbb
--- /dev/null
+++ b/test/files/run/t7777/Macros_1.scala
@@ -0,0 +1,17 @@
+import scala.language.experimental.macros
+import scala.language.dynamics
+import scala.reflect.macros.WhiteboxContext
+
+class DynMacro extends Dynamic {
+  def applyDynamic(s: String)(xs: Any*): DynMacro =
+    macro DynMacro.applyDynamicMacro
+}
+
+object DynMacro extends DynMacro {
+  def applyDynamicMacro(c: WhiteboxContext)(s: c.Expr[String])(xs: c.Expr[Any]*): c.Expr[DynMacro] = {
+    import c.universe._
+    val Literal(Constant(n: String)) = s.tree
+    val args = xs.map(_.tree.toString).mkString("(", ", ", ")")
+    c.Expr(q"println(${ n + args }); ${c.prefix.tree}")
+  }
+}
\ No newline at end of file
diff --git a/test/files/run/t7777/Test_2.scala b/test/files/run/t7777/Test_2.scala
new file mode 100644
index 0000000000..1fe8b63bab
--- /dev/null
+++ b/test/files/run/t7777/Test_2.scala
@@ -0,0 +1,6 @@
+object Test extends App {
+  DynMacro.foo(1, 2)         // prints "foo(1, 2)"
+  DynMacro.foo(3).bar(4, 5)  // prints "bar(4, 5)", then "foo(3)"
+  DynMacro(6).bar(7)         // prints "bar(7)", then "apply(6)"
+  DynMacro.foo(8)(9)         // Fails!
+}
\ No newline at end of file