Can't use "pattern match" in very first position when defining validator with DSL

[webblin034]

Official Document : " Accord supports several native Scala control structures, notably ifs and pattern matching " in http://wix.github.io/accord/dsl.html

Library Dependencies :

libraryDependencies ++= Seq(
  "com.wix"                   %% "accord-core"                 % "0.7.6" % Test,
  "org.scalatest"             %% "scalatest"                   % "3.2.2"  % Test
)

Input Data :

case class InputData(
  id: String,
  name: Option[String] = None,
  description: Option[String] = None,
  items: Seq[String] = Seq.empty
)

Unit Test :

      val data = InputData("", None, None, Seq.empty)
      val result = validate(data)
      result.isFailure shouldBe true
      result.toFailure.value.violations.size shouldBe 4

Test Pass !

  implicit val inputDataValidator: Validator[InputData] = validator[InputData] { request =>
    request.id is notBlank
    request.name match {
      case None => {
        request.name.mkString is notBlank
        request.description.mkString is notBlank
        request.items is notEmpty
      }
    }

Test Pass With Exhaustive Cases !

  implicit val inputDataValidator: Validator[InputData] = validator[InputData] { request =>
    request.name match {
      case None => {
        request.id is notBlank
        request.name.mkString is notBlank
        request.description.mkString is notBlank
        request.items is notEmpty
      }
      case Some(_) =>
    }
    ()
  }

Test Compilation Failed !

  implicit val inputDataValidator: Validator[InputData] = validator[InputData] { request =>
    request.name match {
      case None => {
        request.id is notBlank
        request.name.mkString is notBlank
        request.description.mkString is notBlank
        request.items is notEmpty
      }
    }
    ()
  }

Test Compilation Failed !

  implicit val inputDataValidator: Validator[InputData] = validator[InputData] { request =>
    request.name match {
      case Some(_) => {
        request.id is notBlank
        request.name.mkString is notBlank
        request.description.mkString is notBlank
        request.items is notEmpty
      }
    }
    ()
  }

Test Compilation Error :

  not found: value request
  [error] request.name match {
  [error] ^
  [error] Compilation failed