Creating a Scala macro that expands into a class definition - scala

Question

As the title suggests, I am trying to create a Scala macro that generates a class definition. Basically I want to eventually do the following:
classify("StandardEvent", Map("name" -> String, "id" -> Int))
// should at compile-time expand to
case class StandardEvent(name: String, id: Int) extends Event
Is that even possible? And if so, could anyone point me into the right direction on how to do so? Actually, I cannot even get the following simple macro to work:
// Macro definition:
def classify(): Unit =
macro classifyImpl
def classifyImpl(c: Context)(): c.Tree = {
import c.universe._
q"class SomeClass"
}
// Macro usage in seperate compilation unit
classify()
val s = new SomeClass
This gets me the following error message:
[error] ClassifyTest.scala:6: not found: type SomeClass
[error] val s = new SomeClass
[error] ^
[trace] Stack trace suppressed: run last app/compile:compileIncremental for the full output.
[error] (app/compile:compileIncremental) java.lang.AssertionError: assertion failed:
[error] class SomeClass extends scala.AnyRef {
[error] def <init>() = {
[error] super.<init>();
[error] ()
[error] }
[error] }
[error] while compiling: ClassifyTest.scala
[error] during phase: typer
[error] library version: version 2.11.8
[error] compiler version: version 2.11.8
[error] reconstructed args: -bootclasspath // ...
[error]
[error] last tree to typer: type SomeClass
[error] tree position: line 5 of ClassifyTest.scala
[error] symbol: <none>
[error] symbol definition: <none> (a NoSymbol)
[error] symbol package: <none>
[error] symbol owners:
[error] call site: <none> in <none>
[error]
[error] == Source file context for tree position ==
[error]
[error] 2 object ClassifyTest extends App {
[error] 3
[error] 4 classify()
[error] 5 val s = new SomeClass
[error] 6
[error] 7 }
Can anyone make sense of this? Help is much appreciated.