wartremover.warts.DefaultArguments.scala Maven / Gradle / Ivy
package org.wartremover
package warts
object DefaultArguments extends WartTraverser {
def apply(u: WartUniverse): u.Traverser = {
import u.universe._
import u.universe.Flag._
object DefaultParam {
def unapply(vparamss: List[List[ValDef]]): Option[ValDef] =
vparamss.flatMap(_.find(_.mods.hasFlag(DEFAULTPARAM))).headOption
}
new u.Traverser {
override def traverse(tree: Tree): Unit = {
tree match {
// Ignore trees marked by SuppressWarnings
case t if hasWartAnnotation(u)(t) =>
case d@DefDef(_, _, _, DefaultParam(param), _, _) if !isSynthetic(u)(d) =>
error(u)(param.pos, "Function has default arguments")
case _ =>
super.traverse(tree)
}
}
}
}
}