mirai-core-api/net.mamoe.mirai.message/MessageSerializers/registerSerializer

registerSerializer

@MiraiExperimentalApi
abstract fun <M : SingleMessage> registerSerializer(type: KClass<M>, serializer: KSerializer<M>)

注册 serializer 到 type 的所有为 SingleMessage 子类型的超类型的多态域 PolymorphicModuleBuilder.subclass

实现:

for (superclass in type.allSuperclasses) {
    if (superclass.isFinal) continue
    if (superclass.isSubclassOf(SingleMessage::class)) continue
    polymorphic(superclass) {
        subclass(type, serializer)
    }
}
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若要自己实现消息类型, 务必在这里注册对应序列化器, 否则在 MessageChain.serializeToJsonString 时将会出错.

Since

2.0, revised 2.3