mirai-core-api/net.mamoe.mirai.message.data/AbstractMessageKey

AbstractMessageKey

abstract class AbstractMessageKey<out M : SingleMessage>(val safeCast: (SingleMessage) -> M?) : MessageKey<M>

独立的 MessageKey 的实现. '独立' 即 final, 不支持多态类型. 适用于作为最顶层的 MessageKey, 如 MessageSource.

See also

AbstractPolymorphicMessageKey

Inheritors

AbstractPolymorphicMessageKey

Constructors

AbstractMessageKey

constructor(safeCast: (SingleMessage) -> M?)

Functions

fun MessageKey<*>.isInstance(message: SingleMessage): Boolean

尝试 MessageKey.safeCast, 成功时返回 true

Properties

open override val safeCast: (SingleMessage) -> M?

将一个 SingleMessage 强转为 M 类型. 在类型不符合时返回 null

val <A : SingleMessage> MessageKey<A>.topmostKey: MessageKey<*>

获取最上层 MessageKey.