Module

A convenience class to construct stackable modules. This variant operates over stacks. Useful for building stack elements:

def myNode = new Module[Int=>Int]("myelem") {
def make(params: Params, next: Stack[Int=>Int]): Stack[Int=>Int] = {
  val Multiplier(m) = params[Multiplier]
  if (m == 1) next // It's a no-op, skip it.
  else Stack.Leaf("multiply", i => next.make(params)(i)*m)
}
}