gistfile1.txt

object autoCreateParam {
  def apply_impl[A, B: c.WeakTypeTag](c: Context)(columnName: c.Expr[ColumnName[A]], parameter: c.Expr[B]) = {
    import c.universe._

    val B = weakTypeTag[B].tpe
    val constructor = B.decls.collectFirst { case m: MethodSymbol if m.isPrimaryConstructor => m }.getOrElse {
      c.abort(c.enclosingPosition, s"Could not find the primary constructor for $B. type $B must be a class or case class, not trait or type parameter")
    }

    val paramTuple = constructor.paramLists.head.map { field =>
      val name = field.name.decodedName.toString
      field.name.toTermName
      q"$columnName.column($name) -> $parameter.${field.name.toTermName}"
    }
    c.Expr[Seq[(SQLSyntax, ParameterBinder)]](q"Seq(..$paramTuple)")
  }

  def apply[A, B](columnName: ColumnName[A], parameter: B): Seq[(SQLSyntax, ParameterBinder)] = macro apply_impl[A, B]
}