Update docs

README.md

@@ -30,7 +30,7 @@ Mirai 的所有模块均开源
 inline fun <reified E: Event> subscribeAlways(handler: (E) -> Unit)
 
 subscribeAlways<FriendMessageEvent>{
-  //it: MessageChain
+  //it: FriendMessageEvent
 }
 ```
 
@@ -41,28 +41,17 @@ inline fun <reified E: Event> subscribeAll(builder: ListenerBuilder.() -> Unit)
 
 subscribe<FriendMessageEvent>{
   always{
-    //it: MessageChain
+    //it: FriendMessageEvent
     //coroutineContext: EventScope.coroutineContext
   }
   //可同时开始多个监听。
   always{
-    //it: MessageChain
+    //it: FriendMessageEvent
     //coroutineContext: EventScope.coroutineContext
   }
 }
 ```
 
-##### KClass extension
-更推荐使用 Top-level reified
-```kotlin
-fun <E : Event> KClass<E>.subscribeAlways(listener: suspend (E) -> Unit)
-
-FriendMessageEvent::class.subscribeAlways{
-  if(it.message eq "你好")
-     it.reply("你好！")
-}
-```
-
 ![AYWVE86P](.github/A%7DYWVE860U%28%25YQD%24R1GB1%5BP.png)
 
 ### 图片测试

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/Subscribers.kt

@@ -3,9 +3,7 @@
 package net.mamoe.mirai.event
 
 import net.mamoe.mirai.event.internal.Handler
-import net.mamoe.mirai.event.internal.listeners
 import net.mamoe.mirai.event.internal.subscribeInternal
-import kotlin.jvm.Synchronized
 import kotlin.reflect.KClass
 
 enum class ListeningStatus {
@@ -13,26 +11,6 @@ enum class ListeningStatus {
     STOPPED
 }
 
-/* KClass 的扩展方法 */
-
-@Synchronized
-fun <E : Event> KClass<E>.subscribe(handler: suspend (E) -> ListeningStatus) = this.listeners.add(Handler(handler))
-
-fun <E : Event> KClass<E>.subscribeAlways(listener: suspend (E) -> Unit) = this.subscribeInternal(Handler { listener(it); ListeningStatus.LISTENING })
-
-fun <E : Event> KClass<E>.subscribeOnce(listener: suspend (E) -> Unit) = this.subscribeInternal(Handler { listener(it); ListeningStatus.STOPPED })
-
-fun <E : Event, T> KClass<E>.subscribeUntil(valueIfStop: T, listener: suspend (E) -> T) = subscribeInternal(Handler { if (listener(it) === valueIfStop) ListeningStatus.STOPPED else ListeningStatus.LISTENING })
-fun <E : Event> KClass<E>.subscribeUntilFalse(listener: suspend (E) -> Boolean) = subscribeUntil(false, listener)
-fun <E : Event> KClass<E>.subscribeUntilTrue(listener: suspend (E) -> Boolean) = subscribeUntil(true, listener)
-fun <E : Event> KClass<E>.subscribeUntilNull(listener: suspend (E) -> Any?) = subscribeUntil(null, listener)
-
-
-fun <E : Event, T> KClass<E>.subscribeWhile(valueIfContinue: T, listener: suspend (E) -> T) = subscribeInternal(Handler { if (listener(it) !== valueIfContinue) ListeningStatus.STOPPED else ListeningStatus.LISTENING })
-fun <E : Event> KClass<E>.subscribeWhileFalse(listener: suspend (E) -> Boolean) = subscribeWhile(false, listener)
-fun <E : Event> KClass<E>.subscribeWhileTrue(listener: suspend (E) -> Boolean) = subscribeWhile(true, listener)
-fun <E : Event> KClass<E>.subscribeWhileNull(listener: suspend (E) -> Any?) = subscribeWhile(null, listener)
-
 /* 顶层方法 */
 
 inline fun <reified E : Event> subscribe(noinline handler: suspend (E) -> ListeningStatus) = E::class.subscribe(handler)
@@ -52,6 +30,26 @@ inline fun <reified E : Event> subscribeWhileFalse(noinline listener: suspend (E
 inline fun <reified E : Event> subscribeWhileTrue(noinline listener: suspend (E) -> Boolean) = E::class.subscribeWhileTrue(listener)
 inline fun <reified E : Event> subscribeWhileNull(noinline listener: suspend (E) -> Any?) = E::class.subscribeWhileNull(listener)
 
+/* KClass 的扩展方法, 不推荐 */
+
+fun <E : Event> KClass<E>.subscribe(handler: suspend (E) -> ListeningStatus) = this.subscribeInternal(Handler(handler))
+
+fun <E : Event> KClass<E>.subscribeAlways(listener: suspend (E) -> Unit) = this.subscribeInternal(Handler { listener(it); ListeningStatus.LISTENING })
+
+fun <E : Event> KClass<E>.subscribeOnce(listener: suspend (E) -> Unit) = this.subscribeInternal(Handler { listener(it); ListeningStatus.STOPPED })
+
+fun <E : Event, T> KClass<E>.subscribeUntil(valueIfStop: T, listener: suspend (E) -> T) = subscribeInternal(Handler { if (listener(it) === valueIfStop) ListeningStatus.STOPPED else ListeningStatus.LISTENING })
+fun <E : Event> KClass<E>.subscribeUntilFalse(listener: suspend (E) -> Boolean) = subscribeUntil(false, listener)
+fun <E : Event> KClass<E>.subscribeUntilTrue(listener: suspend (E) -> Boolean) = subscribeUntil(true, listener)
+fun <E : Event> KClass<E>.subscribeUntilNull(listener: suspend (E) -> Any?) = subscribeUntil(null, listener)
+
+
+fun <E : Event, T> KClass<E>.subscribeWhile(valueIfContinue: T, listener: suspend (E) -> T) = subscribeInternal(Handler { if (listener(it) !== valueIfContinue) ListeningStatus.STOPPED else ListeningStatus.LISTENING })
+fun <E : Event> KClass<E>.subscribeWhileFalse(listener: suspend (E) -> Boolean) = subscribeWhile(false, listener)
+fun <E : Event> KClass<E>.subscribeWhileTrue(listener: suspend (E) -> Boolean) = subscribeWhile(true, listener)
+fun <E : Event> KClass<E>.subscribeWhileNull(listener: suspend (E) -> Any?) = subscribeWhile(null, listener)
+
+/* ListenerBuilder DSL */
 
 /**
  * 监听一个事件. 可同时进行多种方式的监听

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/internal/InternalEventListeners.kt

@@ -4,6 +4,7 @@ import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import net.mamoe.mirai.event.Event
 import net.mamoe.mirai.event.ListeningStatus
+import net.mamoe.mirai.utils.removeIfInlined
 import kotlin.reflect.KClass
 
 /**
@@ -11,7 +12,7 @@ import kotlin.reflect.KClass
  *
  * @author Him188moe
  */
-internal fun <E : Event> KClass<E>.subscribeInternal(listener: Listener<E>) = this.listeners.add(listener)
+internal fun <E : Event> KClass<E>.subscribeInternal(listener: Listener<E>) = this.listeners.add(listener)//TODO lock or sth else
 
 /**
  * 事件监听器
@@ -19,7 +20,6 @@ internal fun <E : Event> KClass<E>.subscribeInternal(listener: Listener<E>) = th
  * @author Him188moe
  */
 internal interface Listener<in E : Event> {
-
     suspend fun onEvent(event: E): ListeningStatus
 }
 
@@ -58,12 +58,7 @@ internal object EventListenerManger {
 @Suppress("UNCHECKED_CAST")
 internal suspend fun <E : Event> E.broadcastInternal(): E {
     suspend fun callListeners(listeners: EventListeners<in E>) = listeners.lock.withLock {
-        val iterator = listeners.iterator()
-        while (iterator.hasNext()) {
-            if (iterator.next().onEvent(this) == ListeningStatus.STOPPED) {
-                iterator.remove()
-            }
-        }
+        listeners.removeIfInlined { it.onEvent(this) == ListeningStatus.STOPPED }
     }
 
     callListeners(this::class.listeners as EventListeners<in E>)

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/network/BotNetworkHandler.kt

@@ -10,7 +10,7 @@ import net.mamoe.mirai.network.protocol.tim.packet.*
 import net.mamoe.mirai.network.protocol.tim.packet.login.ClientSKeyRefreshmentRequestPacket
 import net.mamoe.mirai.network.protocol.tim.packet.login.LoginResult
 import net.mamoe.mirai.utils.LoginConfiguration
-import net.mamoe.mirai.utils.MiraiDatagramChannel
+import net.mamoe.mirai.utils.PlatformDatagramChannel
 
 /**
  * Mirai 的网络处理器, 它承担所有数据包([Packet])的处理任务.
@@ -33,7 +33,7 @@ interface BotNetworkHandler<Socket : DataPacketSocket> : Closeable {
      * 所有 [BotNetworkHandler] 的协程均启动在此作用域下.
      *
      * [BotNetworkHandler] 的协程包含:
-     * - UDP 包接收: [MiraiDatagramChannel.read]
+     * - UDP 包接收: [PlatformDatagramChannel.read]
      * - 心跳 Job [ClientHeartbeatPacket]
      * - SKey 刷新 [ClientSKeyRefreshmentRequestPacket]
      * - 所有数据包处理和发送

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/network/protocol/tim/TIMBotNetworkHandler.kt

@@ -24,7 +24,7 @@ import net.mamoe.mirai.utils.*
  *
  * @see BotNetworkHandler
  */
-internal class TIMBotNetworkHandler(private val bot: Bot) : BotNetworkHandler<TIMBotNetworkHandler.BotSocket>, PacketHandlerList() {
+internal class TIMBotNetworkHandler internal constructor(private val bot: Bot) : BotNetworkHandler<TIMBotNetworkHandler.BotSocket>, PacketHandlerList() {
     override val NetworkScope: CoroutineScope = CoroutineScope(Dispatchers.Default)
 
     override lateinit var socket: BotSocket
@@ -92,7 +92,7 @@ internal class TIMBotNetworkHandler(private val bot: Bot) : BotNetworkHandler<TI
     override suspend fun sendPacket(packet: ClientPacket) = socket.sendPacket(packet)
 
     internal inner class BotSocket(override val serverIp: String, val configuration: LoginConfiguration) : DataPacketSocket {
-        override val channel: MiraiDatagramChannel = MiraiDatagramChannel(serverIp, 8000)
+        override val channel: PlatformDatagramChannel = PlatformDatagramChannel(serverIp, 8000)
 
         override val isOpen: Boolean get() = channel.isOpen
 
@@ -104,7 +104,7 @@ internal class TIMBotNetworkHandler(private val bot: Bot) : BotNetworkHandler<TI
 
                 try {
                     channel.read(buffer)//JVM: withContext(IO)
-                } catch (e: ClosedChannelException) {
+                } catch (e: ReadPacketInternalException) {
 
                 } catch (e: Exception) {
                     e.log()

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/network/protocol/tim/handler/DataPacketSocket.kt

@@ -7,7 +7,7 @@ import net.mamoe.mirai.network.LoginSession
 import net.mamoe.mirai.network.protocol.tim.TIMBotNetworkHandler
 import net.mamoe.mirai.network.protocol.tim.packet.ClientPacket
 import net.mamoe.mirai.network.protocol.tim.packet.ServerPacket
-import net.mamoe.mirai.utils.MiraiDatagramChannel
+import net.mamoe.mirai.utils.PlatformDatagramChannel
 
 /**
  * 网络接口.
@@ -24,7 +24,7 @@ interface DataPacketSocket : Closeable {
     /**
      * UDP 通道
      */
-    val channel: MiraiDatagramChannel
+    val channel: PlatformDatagramChannel
 
     /**
      * 是否开启

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/SocketBridge.kt

@@ -4,13 +4,27 @@ import kotlinx.io.core.Closeable
 import kotlinx.io.core.IoBuffer
 import kotlinx.io.errors.IOException
 
-expect class MiraiDatagramChannel(serverHost: String, serverPort: Short) : Closeable {
+/**
+ * 多平台适配的 DatagramChannel.
+ */
+expect class PlatformDatagramChannel(serverHost: String, serverPort: Short) : Closeable {
     suspend fun read(buffer: IoBuffer): Int
     suspend fun send(buffer: IoBuffer): Int
 
     val isOpen: Boolean
 }
 
+/**
+ * Channel 被关闭
+ */
 expect class ClosedChannelException : IOException
 
-expect class SendPacketInternalException(cause: Throwable?) : Exception
\ No newline at end of file
+/**
+ * 在 [PlatformDatagramChannel.send] 或 [PlatformDatagramChannel.read] 时出现的错误.
+ */
+expect class SendPacketInternalException(cause: Throwable?) : IOException
+
+/**
+ * 在 [PlatformDatagramChannel.send] 或 [PlatformDatagramChannel.read] 时出现的错误.
+ */
+expect class ReadPacketInternalException(cause: Throwable?) : IOException
\ No newline at end of file

mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/utils/SocketBridgeJvm.kt

@@ -4,16 +4,24 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import kotlinx.io.core.Closeable
 import kotlinx.io.core.IoBuffer
+import kotlinx.io.errors.IOException
 import kotlinx.io.nio.read
 import java.net.InetSocketAddress
 import java.nio.channels.DatagramChannel
 import java.nio.channels.ReadableByteChannel
 
-actual class MiraiDatagramChannel actual constructor(serverHost: String, serverPort: Short) : Closeable {
+actual class PlatformDatagramChannel actual constructor(serverHost: String, serverPort: Short) : Closeable {
     private val serverAddress: InetSocketAddress = InetSocketAddress(serverHost, serverPort.toInt())
     private val channel: DatagramChannel = DatagramChannel.open().connect(serverAddress)
 
-    actual suspend fun read(buffer: IoBuffer) = withContext(Dispatchers.IO) { (channel as ReadableByteChannel).read(buffer) }
+    actual suspend fun read(buffer: IoBuffer) = withContext(Dispatchers.IO) {
+        try {
+            (channel as ReadableByteChannel).read(buffer)
+        } catch (e: Exception) {
+            throw ReadPacketInternalException(e)
+        }
+    }
+
     actual suspend fun send(buffer: IoBuffer) = withContext(Dispatchers.IO) {
         buffer.readDirect {
             try {
@@ -33,4 +41,6 @@ actual class MiraiDatagramChannel actual constructor(serverHost: String, serverP
 
 actual typealias ClosedChannelException = java.nio.channels.ClosedChannelException
 
-actual class SendPacketInternalException actual constructor(cause: Throwable?) : Exception(cause)
\ No newline at end of file
+actual class SendPacketInternalException actual constructor(cause: Throwable?) : IOException(cause)
+
+actual class ReadPacketInternalException actual constructor(cause: Throwable?) : IOException(cause)
\ No newline at end of file