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Add return values to MessageDsl subscribers

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This commit is contained in:
Him188 2020-02-13 09:47:45 +08:00
parent 631ca4f639
commit 8e05595bac
1 changed files with 18 additions and 18 deletions
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36
mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/MessageSubscribers.kt
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@ -29,20 +29,20 @@ import kotlin.contracts.contract
*/
@UseExperimental(ExperimentalContracts::class)
@MessageDsl
inline fun CoroutineScope.subscribeMessages(crossinline listeners: MessageSubscribersBuilder<MessagePacket<*, *>>.() -> Unit) {
inline fun <R> CoroutineScope.subscribeMessages(crossinline listeners: MessageSubscribersBuilder<MessagePacket<*, *>>.() -> R): R {
// contract 可帮助 IDE 进行类型推断. 无实际代码作用.
contract {
callsInPlace(listeners, InvocationKind.EXACTLY_ONCE)
}
MessageSubscribersBuilder { messageListener: MessageListener<MessagePacket<*, *>> ->
return MessageSubscribersBuilder { messageListener: MessageListener<MessagePacket<*, *>> ->
// subscribeAlways 即注册一个监听器. 这个监听器收到消息后就传递给 [listener]
// listener 即为 DSL 里 `contains(...) { }`, `startsWith(...) { }` 的代码块.
subscribeAlways {
messageListener.invoke(this, this.message.toString())
// this.message.toString() 即为 messageListener 中 it 接收到的值
}
}.apply { listeners() }
}.run(listeners)
}
/**
@ -50,15 +50,15 @@ inline fun CoroutineScope.subscribeMessages(crossinline listeners: MessageSubscr
*/
@UseExperimental(ExperimentalContracts::class)
@MessageDsl
inline fun CoroutineScope.subscribeGroupMessages(crossinline listeners: MessageSubscribersBuilder<GroupMessage>.() -> Unit) {
inline fun <R> CoroutineScope.subscribeGroupMessages(crossinline listeners: MessageSubscribersBuilder<GroupMessage>.() -> R): R {
contract {
callsInPlace(listeners, InvocationKind.EXACTLY_ONCE)
}
MessageSubscribersBuilder<GroupMessage> { listener ->
return MessageSubscribersBuilder<GroupMessage> { listener ->
subscribeAlways {
listener(it, this.message.toString())
}
}.apply { listeners() }
}.run(listeners)
}
/**
@ -66,15 +66,15 @@ inline fun CoroutineScope.subscribeGroupMessages(crossinline listeners: MessageS
*/
@UseExperimental(ExperimentalContracts::class)
@MessageDsl
inline fun CoroutineScope.subscribeFriendMessages(crossinline listeners: MessageSubscribersBuilder<FriendMessage>.() -> Unit) {
inline fun <R> CoroutineScope.subscribeFriendMessages(crossinline listeners: MessageSubscribersBuilder<FriendMessage>.() -> R): R {
contract {
callsInPlace(listeners, InvocationKind.EXACTLY_ONCE)
}
MessageSubscribersBuilder<FriendMessage> { listener ->
return MessageSubscribersBuilder<FriendMessage> { listener ->
subscribeAlways {
listener(it, this.message.toString())
}
}.apply { listeners() }
}.run(listeners)
}
/**
@ -82,15 +82,15 @@ inline fun CoroutineScope.subscribeFriendMessages(crossinline listeners: Message
*/
@UseExperimental(ExperimentalContracts::class)
@MessageDsl
inline fun Bot.subscribeMessages(crossinline listeners: MessageSubscribersBuilder<MessagePacket<*, *>>.() -> Unit) {
inline fun <R> Bot.subscribeMessages(crossinline listeners: MessageSubscribersBuilder<MessagePacket<*, *>>.() -> R): R {
contract {
callsInPlace(listeners, InvocationKind.EXACTLY_ONCE)
}
MessageSubscribersBuilder<MessagePacket<*, *>> { listener ->
return MessageSubscribersBuilder<MessagePacket<*, *>> { listener ->
this.subscribeAlways {
listener(it, this.message.toString())
}
}.apply { listeners() }
}.run(listeners)
}
/**
@ -98,15 +98,15 @@ inline fun Bot.subscribeMessages(crossinline listeners: MessageSubscribersBuilde
*/
@UseExperimental(ExperimentalContracts::class)
@MessageDsl
inline fun Bot.subscribeGroupMessages(crossinline listeners: MessageSubscribersBuilder<GroupMessage>.() -> Unit) {
inline fun <R> Bot.subscribeGroupMessages(crossinline listeners: MessageSubscribersBuilder<GroupMessage>.() -> R): R {
contract {
callsInPlace(listeners, InvocationKind.EXACTLY_ONCE)
}
MessageSubscribersBuilder<GroupMessage> { listener ->
return MessageSubscribersBuilder<GroupMessage> { listener ->
this.subscribeAlways {
listener(it, this.message.toString())
}
}.apply { listeners() }
}.run(listeners)
}
/**
@ -114,15 +114,15 @@ inline fun Bot.subscribeGroupMessages(crossinline listeners: MessageSubscribersB
*/
@UseExperimental(ExperimentalContracts::class)
@MessageDsl
inline fun Bot.subscribeFriendMessages(crossinline listeners: MessageSubscribersBuilder<FriendMessage>.() -> Unit) {
inline fun <R> Bot.subscribeFriendMessages(crossinline listeners: MessageSubscribersBuilder<FriendMessage>.() -> R): R {
contract {
callsInPlace(listeners, InvocationKind.EXACTLY_ONCE)
}
MessageSubscribersBuilder<FriendMessage> { listener ->
return MessageSubscribersBuilder<FriendMessage> { listener ->
this.subscribeAlways {
it.listener(it.message.toString())
}
}.apply { listeners() }
}.run(listeners)
}