[Serialization] Reorganize module structure

plugins/kotlinx-serialization/testData/boxIr/classSerializerAsObject.kt

@@ -0,0 +1,68 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+// TARGET_BACKEND: JVM_IR
+
+// WITH_STDLIB
+
+package a
+
+import kotlinx.serialization.*
+
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+import kotlin.test.assertEquals
+
+class Dummy
+
+class DummyBox<T>
+
+@Serializable(ClassSerializerOnClass::class)
+class DummySpecified
+
+class ClassSerializerGeneric : KSerializer<DummyBox<String>> {
+    override val descriptor get() = PrimitiveSerialDescriptor("ClassSerializerGeneric", PrimitiveKind.INT)
+    override fun deserialize(decoder: Decoder): DummyBox<String> = TODO()
+    override fun serialize(encoder: Encoder, value:DummyBox<String>): Unit = TODO()
+}
+
+class ClassSerializerDummy : KSerializer<Dummy> {
+    override val descriptor get() = PrimitiveSerialDescriptor("ClassSerializerDummy", PrimitiveKind.INT)
+    override fun deserialize(decoder: Decoder): Dummy = TODO()
+    override fun serialize(encoder: Encoder, value: Dummy): Unit = TODO()
+}
+
+object ObjectSerializerGeneric: KSerializer<DummyBox<String>> {
+    override val descriptor get() = PrimitiveSerialDescriptor("ObjectSerializerGeneric", PrimitiveKind.INT)
+    override fun deserialize(decoder: Decoder): DummyBox<String> = TODO()
+    override fun serialize(encoder: Encoder, value: DummyBox<String>): Unit = TODO()
+}
+
+object ObjectSerializerDummy: KSerializer<Dummy> {
+    override val descriptor get() = PrimitiveSerialDescriptor("ObjectSerializerDummy", PrimitiveKind.INT)
+    override fun deserialize(decoder: Decoder): Dummy = TODO()
+    override fun serialize(encoder: Encoder, value:Dummy): Unit = TODO()
+}
+
+class ClassSerializerOnClass: KSerializer<DummySpecified> {
+    override val descriptor get() = PrimitiveSerialDescriptor("ClassSerializerOnClass", PrimitiveKind.INT)
+    override fun deserialize(decoder: Decoder): DummySpecified = TODO()
+    override fun serialize(encoder: Encoder, value:DummySpecified): Unit = TODO()
+}
+
+@Serializable
+class Holder(
+    @Serializable(ClassSerializerGeneric::class) val a: DummyBox<String>,
+    @Serializable(ClassSerializerDummy::class) val b: Dummy,
+    @Serializable(ObjectSerializerGeneric::class) val c: DummyBox<String>,
+    @Serializable(ObjectSerializerDummy::class) val d: Dummy,
+    val e: DummySpecified
+)
+
+fun box(): String {
+    val descs = Holder.serializer().descriptor.elementDescriptors.toList()
+    assertEquals("ClassSerializerGeneric", descs[0].serialName)
+    assertEquals("ClassSerializerDummy", descs[1].serialName)
+    assertEquals("ObjectSerializerGeneric", descs[2].serialName)
+    assertEquals("ObjectSerializerDummy", descs[3].serialName)
+    assertEquals("ClassSerializerOnClass", descs[4].serialName)
+    return "OK"
+}