Scala - Obtain structure of a case class and build an instance of it from data

CaseClassFactory.scala

// NOTE: This trickery below allows us to obtain the type of
// fields of a case class, so that we can play with generic
// pattern matching on field types.

// The post below is somewhat related.
// See also: http://www.alessandrolacava.com/blog/scala-case-classes-in-depth/


import scala.reflect.runtime.universe._

def classAccessors[T: TypeTag]: List[MethodSymbol] = 
  typeOf[T].members
    .sorted.collect {
      case m: MethodSymbol if m.isCaseAccessor => m
    }.toList

def classFactory[T: TypeTag]: Option[MethodSymbol] = 
  typeOf[T].members
    .collect {
      case m: MethodSymbol if m.isPrimaryConstructor => m
    }.headOption


//----- Example of usage -----

case class User(name: String, position: String, salary: Float, age: Int)

val factory: Option[MethodSymbol] = classFactory[User]
val accessors: List[MethodSymbol] = classAccessors[User]
val values: List[Any] = List("John Smith", "Manager", 85605.50, 36)
// factory: Option[MethodSymbol] = Some(constructor User)
// accessors: List[MethodSymbol] = List(value name, value position, value salary, value age)
// values: List[Any] = List(John Smith, Manager, 85605.5, 36)

val types = accessors.map(m => m.returnType)
// types: List[Type] = List(String, String, scala.Float, scala.Int)

val check = (values zip types).map { case (v, t) => (v.getClass.getSimpleName, t.toString) }
// check: List[(String, String)] = List(
//   ("String", "String"),
//   ("String", "String"),
//   ("Double", "scala.Float"),
//   ("Integer", "scala.Int")
// )