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//object Macros {
// def foo(x: Int) = macro Impls.foo
//}
object Test extends App {
import scala.reflect.runtime.universe._
import scala.reflect.runtime.universe.Flag._
import scala.reflect.runtime.{currentMirror => cm}
import scala.tools.reflect.ToolBox
val macrobody = Select(Ident(newTermName("Impls")), newTermName("foo"))
val macroparam = ValDef(NoMods, newTermName("x"), TypeTree(definitions.IntClass.asType), EmptyTree)
val macrodef = DefDef(Modifiers(MACRO), newTermName("foo"), Nil, List(List(macroparam)), TypeTree(), macrobody)
val modulector = DefDef(NoMods, nme.CONSTRUCTOR, Nil, List(List()), TypeTree(), Block(Apply(Select(Super(This(EmptyTypeName), EmptyTypeName), nme.CONSTRUCTOR), List())))
val module = ModuleDef(NoMods, newTermName("Macros"), Template(Nil, emptyValDef, List(modulector, macrodef)))
val macroapp = Apply(Select(Ident("Macros"), newTermName("foo")), List(Literal(Constant(42))))
val tree = Block(macrodef, module, macroapp)
val toolbox = cm.mkToolBox(options = "-language:experimental.macros")
println(toolbox.runExpr(tree))
}
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