value delegating

backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/setting/Setting.kt

@@ -23,7 +23,15 @@ import kotlin.reflect.typeOf
 
 // TODO: 2020/6/21 move to JvmPlugin to inherit SettingStorage and CoroutineScope for saving
 // Shows public APIs such as deciding when to auto-save.
-abstract class Setting : SettingImpl()
+abstract class Setting : SettingImpl() {
+
+    operator fun <T> Value<T>.provideDelegate(thisRef: Any?, property: KProperty<*>): Value<T> {
+        @Suppress("UNCHECKED_CAST")
+        valueNodes.add(Node(property as KProperty<T>, value as Value<T>, TODO()))
+        // TODO: 2020/6/21 track on
+        return this
+    }
+}
 
 /**
  * Internal implementation for [Setting] including:
@@ -32,13 +40,13 @@ abstract class Setting : SettingImpl()
  */
 // TODO move to internal package.
 internal abstract class SettingImpl {
-    private class Node<T>(
+    internal class Node<T>(
         val property: KProperty<T>,
         val value: Value<T>,
         val serializer: ValueSerializer<T>
     )
 
-    private val valueNodes: List<Node<*>> = kotlin.run {
+    internal val valueNodes: MutableList<Node<*>> = kotlin.run {
         TODO("reflection")
     }
 

backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/setting/Value.kt

@@ -7,12 +7,13 @@
  * https://github.com/mamoe/mirai/blob/master/LICENSE
  */
 
-@file:Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER", "unused")
+@file:Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER", "unused", "NOTHING_TO_INLINE")
 
 package net.mamoe.mirai.console.setting
 
 import kotlinx.serialization.KSerializer
 import net.mamoe.mirai.utils.MiraiExperimentalAPI
+import kotlin.reflect.KProperty
 
 /**
  * Represents a observable, immutable value wrapping.
@@ -28,6 +29,11 @@ interface Value<T> {
     var value: T
 }
 
+inline operator fun <T> Value<T>.getValue(mySetting: Any?, property: KProperty<*>): T = value
+inline operator fun <T> Value<T>.setValue(mySetting: Any?, property: KProperty<*>, value: T) {
+    this.value = value
+}
+
 /**
  * The serializer for a specific kind of [Value].
  */

backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/setting/internal/serializerUtil.kt

@@ -10,11 +10,6 @@
 package net.mamoe.mirai.console.setting.internal
 
 import kotlinx.serialization.*
-import kotlinx.serialization.builtins.ListSerializer
-import kotlinx.serialization.builtins.serializer
-import net.mamoe.mirai.utils.MiraiExperimentalAPI
-import net.mamoe.yamlkt.Yaml
-import net.mamoe.yamlkt.YamlConfiguration
 import kotlin.reflect.KProperty
 import kotlin.reflect.full.findAnnotation
 

backend/mirai-console/src/test/kotlin/net/mamoe/mirai/console/setting/SettingTest.kt

@@ -13,6 +13,12 @@ import org.junit.jupiter.api.Test
 
 internal class SettingTest {
 
+    class MySetting : Setting() {
+        val int by value(1)
+        val map by valueReified(mapOf("" to ""))
+        val map2 by valueReified(mapOf("" to mapOf("" to mapOf("" to ""))))
+    }
+
     @Test
     fun testPrimitive() {