olegosipenko

const val WHEN_STATEMENT = """
        sealed class S {
          object A: S()
          object B: S()
        }
        
        class WhenTester {
          fun checkS(state: S) {
            when (state) {
              S.A -> println("a")

olegosipenko

testImplementation "io.gitlab.arturbosch.detekt:detekt-api:$detektVersion"
testImplementation "io.gitlab.arturbosch.detekt:detekt-test:$detektVersion"

olegosipenko

class NonExhaustiveWhen(config: Config = Config.empty): Rule(config) {
  override val issue = Issue(
    javaClass.simpleName,
    Severity.Defect,
    DESCR,
    Debt.FIVE_MINS
  )

  override fun visitNamedFunction(function: KtNamedFunction) {
    super.visitNamedFunction(function)

olegosipenko

override fun visitNamedFunction(function: KtNamedFunction) {
  super.visitNamedFunction(function)

  val whenExpressions =
    function.children.filterIsInstance<KtBlockExpression>()
      .flatMap { blockExpression -> blockExpression.children.asIterable() }
      .filterIsInstance<KtWhenExpression>()
  if (whenExpressions.isNotEmpty()) {
    report(
      CodeSmell(

olegosipenko

class NonExhaustiveWhen(config: Config = Config.empty): Rule(config) {
  override val issue = Issue(
    javaClass.simpleName,
    Severity.Defect,
    DESCR,
    Debt.FIVE_MINS
  )
}

olegosipenko

compileOnly "io.gitlab.arturbosch.detekt:detekt-api:$detektVersion"

olegosipenko

fun render(viewState: EmailLoginViewState) {
  when(viewState) {
    INITIAL -> renderInitial()
  }.exhaustive
}

olegosipenko

package com.example
/**
 * We declare a package-level function main which returns Unit and takes
 * an Array of strings as a parameter. Note that semicolons are optional.
 */
fun main(args: Array<String>) {
  println("Hello, world!")
}

olegosipenko

fun render(viewState: EmailLoginViewState) {
  when(viewState) {
    INITIAL -> renderInitial()
  }.exhaustive
}

olegosipenko

val <T> T.exhaustive: T    
  get() = this