kotlinx-serialization-core/kotlinx.serialization.descriptors/PrimitiveSerialDescriptor

PrimitiveSerialDescriptor

fun PrimitiveSerialDescriptor(serialName: String, kind: PrimitiveKind): SerialDescriptor(source)

Factory to create trivial primitive descriptors. serialName must be non-blank and unique. Primitive descriptors should be used when the serialized form of the data has a primitive form, for example:

object LongAsStringSerializer : KSerializer<Long> {
    override val descriptor: SerialDescriptor =
        PrimitiveSerialDescriptor("kotlinx.serialization.LongAsStringSerializer", PrimitiveKind.STRING)

    override fun serialize(encoder: Encoder, value: Long) {
        encoder.encodeString(value.toString())
    }

    override fun deserialize(decoder: Decoder): Long {
        return decoder.decodeString().toLong()
    }
}