xref: /aosp_15_r20/external/kotlinx.serialization/guide/example/example-serializer-18.kt (revision 57b5a4a64c534cf7f27ac9427ceab07f3d8ed3d8)
1 // This file was automatically generated from serializers.md by Knit tool. Do not edit.
2 package example.exampleSerializer18
3 
4 import kotlinx.serialization.*
5 import kotlinx.serialization.json.*
6 import kotlinx.serialization.encoding.*
7 import kotlinx.serialization.descriptors.*
8 
9 import java.util.Date
10 import java.text.SimpleDateFormat
11 
12 object DateAsLongSerializer : KSerializer<Date> {
13     override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("DateAsLong", PrimitiveKind.LONG)
serializenull14     override fun serialize(encoder: Encoder, value: Date) = encoder.encodeLong(value.time)
15     override fun deserialize(decoder: Decoder): Date = Date(decoder.decodeLong())
16 }
17 
18 object DateAsSimpleTextSerializer: KSerializer<Date> {
19     override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("DateAsSimpleText", PrimitiveKind.LONG)
20     private val format = SimpleDateFormat("yyyy-MM-dd")
21     override fun serialize(encoder: Encoder, value: Date) = encoder.encodeString(format.format(value))
22     override fun deserialize(decoder: Decoder): Date = format.parse(decoder.decodeString())
23 }
24 
25 typealias DateAsLong = @Serializable(DateAsLongSerializer::class) Date
26 
27 typealias DateAsText = @Serializable(DateAsSimpleTextSerializer::class) Date
28 
29 @Serializable
30 class ProgrammingLanguage(val stableReleaseDate: DateAsText, val lastReleaseTimestamp: DateAsLong)
31 
mainnull32 fun main() {
33     val format = SimpleDateFormat("yyyy-MM-ddX")
34     val data = ProgrammingLanguage(format.parse("2016-02-15+00"), format.parse("2022-07-07+00"))
35     println(Json.encodeToString(data))
36 }
37