Simplify logger structure

mirai-core/src/androidMain/kotlin/net/mamoe/mirai/utils/PlatformLoggerAndroid.kt

@@ -2,13 +2,11 @@ package net.mamoe.mirai.utils
 
 import android.util.Log
 
-actual typealias PlatformLogger = AndroidLogger
-
 /**
  * Android 平台的默认的日志记录器, 使用 [Log]
  * 不应该直接构造这个类的实例. 需使用 [DefaultLogger]
  */
-open class AndroidLogger(override val identity: String? = "Mirai") : MiraiLoggerPlatformBase() {
+actual open class PlatformLogger actual constructor(override val identity: String?) : MiraiLoggerPlatformBase() {
     override fun verbose0(any: Any?) {
         Log.v(identity, any?.toString() ?: "")
     }

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

@@ -15,7 +15,7 @@ var DefaultLogger: (identity: String?) -> MiraiLogger = { PlatformLogger(it) }
  * 在 _JVM 控制台_ 端的实现为 [println]
  * 在 _Android_ 端的实现为 [android.util.Log]
  *
- * 不应该直接构造这个类的实例. 请使用 [DefaultLogger]
+ * 不应该直接构造这个类的实例. 请使用 [DefaultLogger], 或使用默认的顶层日志记录 [MiraiLogger.Companion]
  */
 expect open class PlatformLogger @JvmOverloads internal constructor(identity: String? = "Mirai") : MiraiLoggerPlatformBase
 
@@ -35,7 +35,7 @@ fun MiraiLogger.withSwitch(default: Boolean = true): MiraiLoggerWithSwitch = Mir
  */
 interface MiraiLogger {
     /**
-     * 顶层日志记录器
+     * 顶层日志记录器.
      */
     companion object : MiraiLogger by DefaultLogger("Mirai")
 
@@ -146,13 +146,14 @@ object SilentLogger : PlatformLogger() {
     }
 }
 
-@Suppress("FunctionName")
-fun SimpleLogger(logger: (String?, Throwable?) -> Unit): SimpleLogger = SimpleLogger(null, logger)
-
 /**
  * 简易日志记录, 所有类型日志都会被重定向 [logger]
  */
 class SimpleLogger(override val identity: String?, private val logger: (String?, Throwable?) -> Unit) : MiraiLoggerPlatformBase() {
+    companion object {
+        operator fun invoke(logger: (String?, Throwable?) -> Unit): SimpleLogger = SimpleLogger(null, logger)
+    }
+
     override fun verbose0(any: Any?) = logger(any?.toString(), null)
     override fun verbose0(message: String?, e: Throwable?) = logger(message, e)
     override fun debug0(any: Any?) = logger(any?.toString(), null)

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

@@ -3,13 +3,11 @@ package net.mamoe.mirai.utils
 import java.text.SimpleDateFormat
 import java.util.*
 
-actual typealias PlatformLogger = Console
-
 /**
  * JVM 控制台日志实现
  */
-open class Console @JvmOverloads internal constructor(
-    override val identity: String? = "Mirai"
+actual open class PlatformLogger @JvmOverloads internal actual constructor(
+    override val identity: String?
 ) : MiraiLoggerPlatformBase() {
     override fun verbose0(any: Any?) = println(any, LoggerTextFormat.RESET)
     override fun verbose0(message: String?, e: Throwable?) {