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package m
import language.experimental.macros
import scala.reflect.macros.blackbox.Context
object Level extends Enumeration {
val Error = Value(5)
}
object Logger {
def error(message: String): Unit = macro LoggerMacros.error
}
private object LoggerMacros {
type LoggerContext = Context { type PrefixType = Logger.type }
def error(c: LoggerContext)(message: c.Expr[String]): c.Expr[Unit] =
log(c)(c.universe.reify(Level.Error), message)
private def log(c: LoggerContext)(level: c.Expr[Level.Value], message: c.Expr[String]): c.Expr[Unit] =
// was: if (level.splice.id < 4) // TODO Remove hack!
if (c.eval(level).id < 4) // TODO Remove hack!
c.universe.reify(())
else {
c.universe.reify(println(message.splice))
}
}
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