Macro

import java.io.File
import language.experimental.macros
import scala.reflect.macros.Context


object Macros {

  def L_ : Int = macro lineImpl

  def lineImpl( c: Context ): c.Expr[Int] = {
    import c.universe._

    val line = Literal( Constant( c.enclosingPosition.line ) )

    c.Expr[Int]( line )
  }

  def F_ : String = macro fileImpl

  def fileImpl( c: Context ): c.Expr[String] = {
    import c.universe._

    val absolute = c.enclosingPosition.source.file.file.toURI
    val base = new File( "." ).toURI

    val path = Literal( Constant( c.enclosingPosition.source.file.file.getName() ) )

    c.Expr[String]( path )
  }

  def C_ : String = macro classImpl

  def classImpl( c: Context ): c.Expr[String] = {
    import c.universe._

    val class_ = Literal( Constant( c.enclosingClass.toString.split(" ")( 1 ) ) )
    c.Expr[String]( class_ )
  }

}