Changes a case class Foo(_type: String) into case class Foo(`type`: String)

UseBackTicks

/**
  * Changes a case class Foo(_type: String) into case class Foo(`type`: String)
  */
case class UseBackTicks(index: SemanticdbIndex) extends SemanticRule(index, "UseBackTicks") {
  override def fix(ctx: RuleCtx): Patch = {

    val reservedWords = Set(
      // Scala
      "abstract", "case", "catch", "class", "def", "do", "else", "extends", "false", "final", "finally", "for", "forSome", "if", "implicit", "import", "lazy", "match", "new", "null", "object", "override", "package", "private", "protected", "return", "sealed", "super", "this", "throw", "trait", "try", "true", "type", "val", "var", "while", "with", "yield",
      // Scala-interop languages keywords
      "abstract", "continue", "switch", "assert", "default", "synchronized", "goto", "break", "double", "implements", "byte", "public", "throws", "enum", "instanceof", "transient", "int", "short", "char", "interface", "static", "void", "finally", "long", "strictfp", "volatile", "const", "float", "native")

    ctx.tree.collect {
      case t @ Term.Name(value) if value.startsWith("_") && reservedWords.contains(value.replaceAll("_","")) =>
      ctx.replaceTree (t, s"`${value.replaceAll("_","")}`")
    }.asPatch

  }
}