Steven Schäfer
65 lines
1.7 KiB
Kotlin
Vendored
65 lines
1.7 KiB
Kotlin
Vendored
// WITH_RUNTIME
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@file:JvmName("TestKt")
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package test
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import kotlinx.android.parcel.*
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import android.os.Parcel
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import android.os.Parcelable
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import java.util.Arrays
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/**
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* Generic pair parceler
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* Create concrete object to use (see below)
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*/
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open class PairParceler<F: Any, S: Any>(private val firstParceler: Parceler<F>, private val secondParceler: Parceler<S>): Parceler<Pair<F, S>> {
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/**
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* Reads the [T] instance state from the [parcel], constructs the new [T] instance and returns it.
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*/
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override fun create(parcel: Parcel): Pair<F, S> =
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firstParceler.create(parcel) to secondParceler.create(parcel)
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/**
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* Writes the [T] instance state to the [parcel].
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*/
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override fun Pair<F, S>.write(parcel: Parcel, flags: Int) {
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with(firstParceler) { this@write.first.write(parcel, 0) }
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with(secondParceler) { this@write.second.write(parcel, 0) }
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}
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}
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object IntParceler: Parceler<Int> {
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/**
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* Reads the [T] instance state from the [parcel], constructs the new [T] instance and returns it.
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*/
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override fun create(parcel: Parcel): Int = parcel.readInt()
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/**
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* Writes the [T] instance state to the [parcel].
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*/
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override fun Int.write(parcel: Parcel, flags: Int) {
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parcel.writeInt(this)
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}
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}
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/**
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* [Int] to [Int] pair parceler
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*/
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object IntToIntParceler: PairParceler<Int, Int>(IntParceler, IntParceler)
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@Parcelize
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@TypeParceler<Pair<Int, Int>, IntToIntParceler>
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class A(val pair: Pair<Int, Int>): Parcelable
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fun box() = parcelTest { parcel ->
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val a1 = A(1 to 2)
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a1.writeToParcel(parcel, 0)
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val bytes = parcel.marshall()
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parcel.unmarshall(bytes, 0, bytes.size)
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parcel.setDataPosition(0)
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val a2 = readFromParcel<A>(parcel)
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assert(a1.pair == a2.pair)
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}
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