Fix deserializing

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/io/serialization/jce/JceDecoder.kt

@@ -35,8 +35,8 @@ internal class JceDecoder(
     }
 
     private fun SerialDescriptor.getJceTagId(index: Int): Int {
-        //println("getTag: ${getElementName(index)}")
-        return getElementAnnotations(index).filterIsInstance<JceId>().singleOrNull()?.id
+        // higher performance, don't use filterIsInstance
+        return (getElementAnnotations(index).first { it is JceId } as? JceId)?.id
             ?: error("missing @JceId for ${getElementName(index)} in ${this.serialName}")
     }
 
@@ -119,11 +119,15 @@ internal class JceDecoder(
             this@JceDecoder.endStructure(descriptor)
         }
 
-        private var state: Boolean = true
-
         override fun beginStructure(descriptor: SerialDescriptor, vararg typeParams: KSerializer<*>): CompositeDecoder {
-            this@JceDecoder.pushTag(if (jce.currentHead.tag == 0) JceTagMapEntryKey else JceTagMapEntryValue)
-            state = !state
+            println { "MapReader.beginStructure: ${jce.currentHead}" }
+            this@JceDecoder.pushTag(
+                when (jce.currentHead.tag) {
+                    0 -> JceTagMapEntryKey
+                    1 -> JceTagMapEntryValue
+                    else -> error("illegal map entry head: ${jce.currentHead.tag}")
+                }
+            )
             return this@JceDecoder.beginStructure(descriptor, *typeParams)
         }
 
@@ -140,7 +144,7 @@ internal class JceDecoder(
         override fun decodeString(): String = jce.useHead { jce.readJceStringValue(it) }
 
         override fun decodeCollectionSize(descriptor: SerialDescriptor): Int {
-            //println("decodeCollectionSize in MapReader: ${descriptor.serialName}")
+            println { "decodeCollectionSize in MapReader: ${descriptor.serialName}" }
             // 不读下一个 head
             return jce.useHead { jce.readJceIntValue(it) }
         }
@@ -148,7 +152,8 @@ internal class JceDecoder(
 
 
     override fun endStructure(descriptor: SerialDescriptor) {
-        //println("endStructure: $descriptor")
+        structureHierarchy--
+        println { "endStructure: ${descriptor.serialName}" }
         if (currentTagOrNull?.isSimpleByteArray == true) {
             jce.prepareNextHead() // read to next head
         }
@@ -173,9 +178,31 @@ internal class JceDecoder(
         }
     }
 
+
+    companion object {
+        @Suppress("MemberVisibilityCanBePrivate")
+        val debuggingMode: Boolean by lazy { false }
+
+        private var structureHierarchy: Int = 0
+
+        inline fun println(value: () -> String) {
+            if (debuggingMode) {
+                kotlin.io.println("    ".repeat(structureHierarchy) + value())
+            }
+        }
+
+        @Suppress("NOTHING_TO_INLINE")
+        inline fun println(value: Any? = "") {
+            if (debuggingMode) {
+                kotlin.io.println("    ".repeat(structureHierarchy) + value)
+            }
+        }
+    }
+
     override fun beginStructure(descriptor: SerialDescriptor, vararg typeParams: KSerializer<*>): CompositeDecoder {
-        //println()
-        //println("beginStructure: ${descriptor.serialName}")
+        println()
+        println { "beginStructure: ${descriptor.serialName}" }
+        structureHierarchy++
         return when (descriptor.kind) {
             is PrimitiveKind -> this@JceDecoder
 
@@ -198,7 +225,7 @@ internal class JceDecoder(
                     when (it.type) {
                         Jce.SIMPLE_LIST -> {
                             currentTag.isSimpleByteArray = true
-                            jce.prepareNextHead() // 无用的元素类型
+                            jce.nextHead() // 无用的元素类型
                             SimpleByteArrayReader
                         }
                         Jce.LIST -> ListReader
@@ -232,23 +259,29 @@ internal class JceDecoder(
     override fun decodeSequentially(): Boolean = false
     override fun decodeElementIndex(descriptor: SerialDescriptor): Int {
         var jceHead = jce.currentHeadOrNull ?: return CompositeDecoder.READ_DONE
-        if (jceHead.type == Jce.STRUCT_END) {
-            return CompositeDecoder.READ_DONE
-        }
 
-        while (!jce.input.endOfInput){
+        println { "decodeElementIndex: ${jce.currentHead}" }
+        while (!jce.input.endOfInput) {
+            if (jceHead.type == Jce.STRUCT_END) {
+                println { "decodeElementIndex: ${jce.currentHead}" }
+                return CompositeDecoder.READ_DONE
+            }
+
             repeat(descriptor.elementsCount) {
                 val tag = descriptor.getJceTagId(it)
                 if (tag == jceHead.tag) {
+                    println { "name=" + descriptor.getElementName(it) }
                     return it
                 }
             }
 
             jce.skipField(jceHead.type)
             if (!jce.prepareNextHead()) {
+                println { "decodeElementIndex EOF" }
                 break
             }
             jceHead = jce.currentHead
+            println { "next! $jceHead" }
         }
 
         return CompositeDecoder.READ_DONE // optional support

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/io/serialization/jce/JceInput.kt

@@ -126,6 +126,7 @@ internal class JceInput(
         Jce.STRING1 -> this.input.discardExact(this.input.readUByte().toInt())
         Jce.STRING4 -> this.input.discardExact(this.input.readInt())
         Jce.MAP -> { // map
+            //println("skip map!")
             nextHead()
             repeat(skipToHeadAndUseIfPossibleOrFail(0, message = { "tag 0 not found when skipping map" }) {
                 readJceIntValue(it)
@@ -136,6 +137,7 @@ internal class JceInput(
             }
         }
         Jce.LIST -> { // list
+            JceDecoder.println {"skip list!"}
             nextHead()
             repeat(skipToHeadAndUseIfPossibleOrFail(0, message = { "tag 0 not found when skipping list" }) {
                 readJceIntValue(it)
@@ -146,26 +148,28 @@ internal class JceInput(
             }
         }
         Jce.STRUCT_BEGIN -> {
+            JceDecoder.println {"skip struct!"}
             fun skipToStructEnd() {
                 var head: JceHead
                 do {
                     head = nextHead()
                     skipField(head.type)
-                } while (head.type.toInt() != 11)
+                } while (head.type != Jce.STRUCT_END)
             }
             skipToStructEnd()
         }
         Jce.STRUCT_END, Jce.ZERO_TYPE -> {
-
+            Unit
         }
         Jce.SIMPLE_LIST -> {
-            val head = nextHead()
-            check(head.type.toInt() == 0) { "skipField with invalid type, type value: " + type + ", " + head.type }
-            this.input.discardExact(
-                skipToHeadAndUseIfPossibleOrFail(0) {
-                    readJceIntValue(it)
-                }
-            )
+            JceDecoder.println { "skip simple list!" }
+            var head = nextHead()
+            check(head.type == Jce.BYTE) { "bad simple list element type: " + head.type }
+            check(head.tag == 0) { "simple list element tag must be 0, but was ${head.tag}" }
+
+            head = nextHead()
+            check(head.tag == 0) { "tag for size for simple list must be 0, but was ${head.tag}" }
+            this.input.discardExact(readJceIntValue(head))
         }
         else -> error("invalid type: $type")
     }

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/data/jce/FriendList.kt

@@ -114,7 +114,7 @@ internal class FriendInfo(
     @JceId(16) val vecIMGroupID: ByteArray? = null,
     @JceId(17) val vecMSFGroupID: ByteArray? = null,
     @JceId(18) val iTermType: Int? = null,
-    @JceId(19) val oVipInfo: VipBaseInfo? = null,
+    @JceId(19) val oVipInfo: VipBaseInfo? = null, //? bad
     @JceId(20) val network: Byte? = null,
     @JceId(21) val vecRing: ByteArray? = null,
     @JceId(22) val uAbiFlag: Long? = null,
@@ -156,12 +156,12 @@ internal class FriendInfo(
 
 @Serializable
 internal class VipBaseInfo(
-    @JceId(0) val mOpenInfo: Map<Int, VipOpenInfo>
+    @JceId(0) val mOpenInfo: Map<Int, VipOpenInfo>? = null // 原本是 0
 ) : JceStruct
 
 @Serializable
 internal class VipOpenInfo(
-    @JceId(0) val open: Boolean,
+    @JceId(0) val open: Boolean? = false,
     @JceId(1) val iVipType: Int = -1,
     @JceId(2) val iVipLevel: Int = -1,
     @JceId(3) val iVipFlag: Int? = null,

mirai-core-qqandroid/src/commonTest/kotlin/net.mamoe.mirai.qqandroid.io.serialization/JceInputTest.kt

@@ -7,6 +7,7 @@ import kotlinx.io.core.toByteArray
 import kotlinx.io.core.writeFully
 import kotlinx.serialization.MissingFieldException
 import kotlinx.serialization.Serializable
+import net.mamoe.mirai.qqandroid.io.JceStruct
 import net.mamoe.mirai.qqandroid.io.serialization.jce.Jce
 import net.mamoe.mirai.qqandroid.io.serialization.jce.JceId
 import net.mamoe.mirai.qqandroid.io.serialization.jce.JceInput
@@ -42,6 +43,48 @@ internal const val ZERO_TYPE: Byte = 12
 @Suppress("INVISIBLE_MEMBER") // bug
 internal class JceInputTest {
 
+    @Test
+    fun testIntToStructMap() {
+        @Serializable
+        data class VipOpenInfo(
+            @JceId(0) val open: Boolean? = false,
+            @JceId(1) val iVipType: Int = -1,
+            @JceId(2) val iVipLevel: Int = -1,
+            @JceId(3) val iVipFlag: Int? = null,
+            @JceId(4) val nameplateId: Long? = null
+        ) : JceStruct
+
+        @Serializable
+        data class VipBaseInfo(
+            @JceId(0) val mOpenInfo: Map<Int, VipOpenInfo>? = null
+        ) : JceStruct
+
+
+        @Serializable
+        data class FriendInfo(
+            @JceId(0) val friendUin: Long,
+            @JceId(14) val nick: String = "",
+            @JceId(19) val oVipInfo: VipBaseInfo? = null, //? bad
+            @JceId(20) val network: Byte? = null
+        ) : JceStruct
+
+        val value = FriendInfo(
+            friendUin = 123,
+            nick = "h",
+            oVipInfo = VipBaseInfo(
+                mapOf(
+                    1 to VipOpenInfo(true, -1),
+                    999999999 to VipOpenInfo(true, -1)
+                )
+            ),
+            network = 1
+        )
+        assertEquals(
+            value.toString(),
+            Jce.UTF_8.load(FriendInfo.serializer(), value.toByteArray(FriendInfo.serializer())).toString()
+        )
+    }
+
     @Test
     fun testSkippingMap() {
         @Serializable