8000 open-to-sealed.0 : baseline for new open to sealed classes refactoring · java-to-kotlin/code@80313cd · GitHub
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open-to-sealed.0 : baseline for new open to sealed classes refactoring
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‎src/main/java/travelator/Id.kt

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override fun toString(): String {
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package travelator
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import java.util.*
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data class Id<out T> constructor(private val raw: String) {
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return raw
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}
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companion object {
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@JvmStatic
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fun <T> raw(id: Id<T>) = id.raw
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@JvmStatic
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fun <T> derivedFrom(id: Id<*>) = Id<T>(id.raw)
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@JvmStatic
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fun <T> mint() = Id<T>(UUID.randomUUID().toString())
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}
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}

‎src/main/java/travelator/Location.kt

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package travelator
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import travelator.geo.Position
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data class Location(
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val id: Id<Location>,
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val localName: String,
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val userReadableName: String,
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val position: Position
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)

‎src/main/java/travelator/calendar/Calendar.kt

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package travelator.calendar
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import travelator.Id
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import travelator.Location
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import java.net.URI
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import java.time.ZonedDateTime
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data class Calendar(
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val id: Id<Calendar>,
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val events: Collection<CalendarEvent>
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) {
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companion object
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}
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data class CalendarEvent(
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val id : Id<CalendarEvent> = Id.mint(),
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val start: ZonedDateTime,
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val end: ZonedDateTime? = null,
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val description: String,
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val icon: URI? = null,
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val location: Location? = null,
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val alarms: List<Alarm> = emptyList()
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)
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data class Alarm(
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val time: ZonedDateTime,
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val description: String? = null
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)

‎src/main/java/travelator/geo/MapOverlay.kt

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package travelator.geo
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import travelator.Id
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import travelator.itinerary.TravelMethod
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import java.net.URI
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import java.util.Locale.ROOT
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sealed class MapOverlay {
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abstract val id: Id<*>?
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}
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data class PointOverlay(
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val position: Position,
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val text: String,
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val icon: URI ? = null,
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override val id: Id<*>? = null,
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) : MapOverlay()
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data class PathOverlay(
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val path: List<Position>,
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val text: String,
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override val id: Id<*>? = null
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): MapOverlay()
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data class AreaOverlay(
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val perimeter: List<Position>,
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val text: String,
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override val id: Id<*>? = null
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) : MapOverlay()
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data class OverlayGroup(
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val elements: List<MapOverlay>,
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override val id: Id<*>? = null
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) : MapOverlay()
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object StandardIcons {
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val HOTEL = URI("urn:icon:hotel")
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val RESTAURANT = URI("urn:icon:hotel")
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val ATTRACTION = URI("urn:icon:attraction")
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val START = URI("urn:icon:start")
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val END = URI("urn:icon:end")
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fun iconFor(travelMethod: TravelMethod): URI =
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URI("urn:icon:travel:${travelMethod.name.toLowerCase(ROOT)}")
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}

‎src/main/java/travelator/geo/Position.kt

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package travelator.geo
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data class Position(val lat: Double, val lon: Double)

‎src/main/java/travelator/itinerary/Accommodation.kt

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package travelator.itinerary
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import travelator.Id
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import travelator.Location
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import travelator.geo.PointOverlay
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import travelator.geo.StandardIcons
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import travelator.money.Money
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import java.time.Duration
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import java.time.Period
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import java.time.ZonedDateTime
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data class Accommodation(
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override val id: Id<Accommodation>,
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val location: Location,
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val checkInFrom: ZonedDateTime,
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val checkOutBefore: ZonedDateTime,
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val pricePerNight: Money
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) : ItineraryItem {
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val nights = Period.between(checkInFrom.toLocalDate(), checkOutBefore.toLocalDate()).days
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val totalPrice: Money = pricePerNight * nights
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override val description
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get() = "$nights nights at ${location.userReadableName}"
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override val costs
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get() = listOf(totalPrice)
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override val mapOverlay
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get() = PointOverlay(
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id = id,
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position = location.position,
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text = location.userReadableName,
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icon = StandardIcons.HOTEL
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)
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}

‎src/main/java/travelator/itinerary/Attraction.kt

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package travelator.itinerary
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import travelator.Id
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import travelator.Location
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import travelator.geo.PointOverlay
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import travelator.geo.StandardIcons
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import travelator.money.Money
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data class Attraction(
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override val id: Id<Attraction>,
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val location: Location,
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val notes: String
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) : ItineraryItem {
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override val description get() =
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location.userReadableName
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override val costs get() =
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emptyLi 57AE st<Money>()
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override val mapOverlay get() =
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PointOverlay(
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position = location.position,
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text = description,
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icon = StandardIcons.ATTRACTION,
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id = id
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)
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}

‎src/main/java/travelator/itinerary/Itinerary.kt

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package travelator.itinerary
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import travelator.Id
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import travelator.geo.OverlayGroup
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data class Itinerary(
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val id: Id<Itinerary>,
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val items: List<ItineraryItem>
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) : Iterable<ItineraryItem> by items
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val Itinerary.mapOverlay
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get() = OverlayGroup(
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id = id,
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elements = items.map { it.mapOverlay })
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val Itinerary.costs
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get() = flatMap(ItineraryItem::costs)

‎src/main/java/travelator/itinerary/ItineraryItem.kt

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package travelator.itinerary
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import travelator.Id
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import travelator.geo.MapOverlay
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import travelator.money.Money
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interface ItineraryItem {
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val id: Id<ItineraryItem>
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val description: String
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val costs: List<Money>
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val mapOverlay: MapOverlay
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}

‎src/main/java/travelator/itinerary/ItineraryItems.java

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package travelator.itinerary;
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public class ItineraryItems {
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public static void example(ItineraryItem item) {
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if (item instanceof Journey) {
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var journey = (Journey) item;
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return
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;
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} else if (item instanceof Accommodation) {
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var accommodation = (Accommodation) item;
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return
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;
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} else if (item instanceof RestaurantBooking) {
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var restaurant = (RestaurantBooking) item;
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return
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;
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} else {
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throw new IllegalStateException("should never happen");
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}
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}
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}

‎src/main/java/travelator/itinerary/Journey.kt

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package travelator.itinerary
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import travelator.Id
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import travelator.Location
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import travelator.geo.*
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import travelator.money.Money
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import java.time.Duration
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import java.time.ZonedDateTime
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data class Journey(
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override val id: Id<Journey>,
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val travelMethod: TravelMethod,
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val departsFrom: Location,
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val departureTime: ZonedDateTime,
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val arrivesAt: Location,
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val arrivalTime: ZonedDateTime,
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val price: Money,
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val path: List<Position> = listOf(departsFrom.position, arrivesAt.position),
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) : ItineraryItem {
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override val description
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get() = "${departsFrom.userReadableName} " +
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"to ${arrivesAt.userReadableName} " +
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"by ${travelMethod.userReadableName}"
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override val costs
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get() = listOf(price)
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override val mapOverlay
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get() = OverlayGroup(
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id = id,
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elements = listOf(
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PathOverlay(path, travelMethod.userReadableName),
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PointOverlay(departsFrom.position, departsFrom.userReadableName, StandardIcons.START),
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PointOverlay(arrivesAt.position, arrivesAt.userReadableName, StandardIcons.END)
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)
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)
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}

‎src/main/java/travelator/itinerary/RestaurantBooking.kt

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package travelator.itinerary
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import travelator.Id
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import travelator.Location
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import travelator.geo.PointOverlay
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import travelator.geo.StandardIcons
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import travelator.money.Money
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import java.time.ZonedDateTime
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data class RestaurantBooking(
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override val id: Id<RestaurantBooking>,
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val location: Location,
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val time: ZonedDateTime
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) : ItineraryItem {
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override val description get() = location.userReadableName
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override val costs get() = emptyList<Money>()
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override val mapOverlay get() =
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PointOverlay(
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id = id,
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position = location.position,
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text = location.userReadableName,
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icon = StandardIcons.RESTAURANT
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)
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}

‎src/main/java/travelator/itinerary/TravelMethod.kt

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package travelator.itinerary
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enum class TravelMethod {
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SEA,
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RAIL,
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BUS,
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CAR,
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CAMEL;
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val userReadableName: String get() = name.toLowerCase()
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}

‎src/main/java/travelator/money/Money.kt

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package travelator.money
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import java.math.BigDecimal
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import java.util.*
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class Money private constructor(
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val amount: BigDecimal,
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val currency: Currency
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) {
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override fun equals(other: Any?) =
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this === other ||
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other is Money &&
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amount == other.amount &&
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currency == other.currency
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override fun hashCode() =
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Objects.hash(amount, currency)
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override fun toString() =
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amount.toString() + " " + currency.currencyCode
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fun add(that: Money) = this + that
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operator fun plus(that: Money): Money {
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require(currency == that.currency) {
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"cannot add Money values of different currencies"
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}
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return Money(this.amount + that.amount, currency)
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}
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operator fun times(n: Int): Money {
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return Money(this.amount * n.toBigDecimal(), currency)
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}
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companion object : (BigDecimal, Currency) -> Money {
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@JvmStatic
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fun of(amount: BigDecimal, currency: Currency) =
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this(amount, currency)
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override operator fun invoke(amount: BigDecimal, currency: Currency) =
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Money(
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amount.setScale(currency.defaultFractionDigits),
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currency
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)
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@JvmStatic
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fun of(amountStr: String, currency: Currency) =
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this(amountStr, currency)
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operator fun invoke(amountStr: String, currency: Currency) =
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invoke(BigDecimal(amountStr), currency)
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@JvmStatic
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fun of(amount: Int, currency: Currency) =
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this(amount, currency)
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operator fun invoke(amount: Int, currency: Currency) =
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invoke(BigDecimal(amount), currency)
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@JvmStatic
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fun zero(userCurrency: Currency) =
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invoke(BigDecimal.ZERO, userCurrency)
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}
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}

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