org.wartremover.warts.ReverseFind.scala Maven / Gradle / Ivy
package org.wartremover
package warts
object ReverseFind extends WartTraverser {
def apply(u: WartUniverse): u.Traverser = {
import u.universe._
val iterable = rootMirror.staticClass("scala.collection.Iterable").toTypeConstructor
val function = rootMirror.staticClass("scala.Function1").toTypeConstructor
new u.Traverser {
override def traverse(tree: Tree): Unit = {
tree match {
case _ if hasWartAnnotation(u)(tree) =>
case Apply(Select(Select(left, TermName("reverse")), TermName("find")), f1 :: Nil)
if left.tpe.typeConstructor <:< iterable && f1.tpe.typeConstructor <:< function =>
error(u)(tree.pos, "you can use findLast instead of reverse.find")
case _ =>
super.traverse(tree)
}
}
}
}
}