cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/TGeoManager.kt

@@ -1,29 +1,19 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.Contextual
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
-import kotlinx.serialization.json.JsonElement
-import kotlinx.serialization.json.decodeFromJsonElement
 
 @Serializable
 @SerialName("TGeoManager")
 public class TGeoManager : TNamed() {
 
+    @Contextual
     public val fMatrices: TObjArray = TObjArray.empty
+
+    @Contextual
     public val fShapes: TObjArray = TObjArray.empty
+
+    @Contextual
     public val fVolumes: TObjArray = TObjArray.empty
-
-
-    public companion object {
-
-
-        /**
-         * Load Json encoded TGeoManager
-         */
-        public fun decodeFromJson(jsonElement: JsonElement): TGeoManager =
-            rootJson().decodeFromJsonElement(jsonElement)
-
-        public fun decodeFromString(string: String): TGeoManager =
-            rootJson().decodeFromString(serializer(), string)
-    }
 }

cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/TGeoMatrix.kt

@@ -1,5 +1,6 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.Contextual
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -36,5 +37,6 @@ public class TGeoRotation(
 @SerialName("TGeoCombiTrans")
 public class TGeoCombiTrans(
     public val fTranslation: DoubleArray,
+    @Contextual
     public val fRotation: TGeoRotation? = null,
 ) : TGeoMatrix()

cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/TGeoMedium.kt

@@ -1,5 +1,6 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.Contextual
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,6 +8,7 @@ import kotlinx.serialization.Serializable
 @SerialName("TGeoMedium")
 public class TGeoMedium(
     public val fId: Int,
+    @Contextual
     public val fMaterial: TGeoMaterial,
     public val fParams: DoubleArray
 ) : TNamed()

cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/TGeoNode.kt

@@ -1,5 +1,6 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.Contextual
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -7,7 +8,10 @@ import kotlinx.serialization.Serializable
 @SerialName("TGeoNode")
 public open class TGeoNode : TNamed() {
     //val fGeoAtt: UInt
+    @Contextual
     public val fVolume: TGeoVolume? = null
+
+    @Contextual
     public val fMother: TGeoVolume? = null
     public val fNumber: Int = 0
     public val fNovlp: Int = 0
@@ -17,5 +21,6 @@ public open class TGeoNode : TNamed() {
 @Serializable
 @SerialName("TGeoNodeMatrix")
 public class TGeoNodeMatrix : TGeoNode() {
+    @Contextual
     public val fMatrix: TGeoMatrix? = null
 }

cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/TGeoShape.kt

@@ -1,5 +1,6 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.Contextual
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -22,36 +23,55 @@ public open class TGeoBBox : TGeoShape() {
 @Serializable
 @SerialName("TGeoBoolNode")
 public sealed class TGeoBoolNode : TObject() {
+    @Contextual
     public abstract val fLeft: TGeoShape
+
+    @Contextual
     public abstract val fLeftMat: TGeoMatrix
+
+    @Contextual
     public abstract val fRight: TGeoShape
+
+    @Contextual
     public abstract val fRightMat: TGeoMatrix
 }
 
 @Serializable
 @SerialName("TGeoUnion")
 public class TGeoUnion(
+    @Contextual
     override val fLeft: TGeoShape,
+    @Contextual
     override val fLeftMat: TGeoMatrix,
+    @Contextual
     override val fRight: TGeoShape,
+    @Contextual
     override val fRightMat: TGeoMatrix
 ) : TGeoBoolNode()
 
 @Serializable
 @SerialName("TGeoSubtraction")
 public class TGeoSubtraction(
+    @Contextual
     override val fLeft: TGeoShape,
+    @Contextual
     override val fLeftMat: TGeoMatrix,
+    @Contextual
     override val fRight: TGeoShape,
+    @Contextual
     override val fRightMat: TGeoMatrix
 ) : TGeoBoolNode()
 
 @Serializable
 @SerialName("TGeoIntersection")
 public class TGeoIntersection(
+    @Contextual
     override val fLeft: TGeoShape,
+    @Contextual
     override val fLeftMat: TGeoMatrix,
+    @Contextual
     override val fRight: TGeoShape,
+    @Contextual
     override val fRightMat: TGeoMatrix
 ) : TGeoBoolNode()
 
@@ -103,6 +123,7 @@ public class TGeoTubeSeg(
 @Serializable
 @SerialName("TGeoShapeAssembly")
 public class TGeoShapeAssembly(
+    @Contextual
     public val fVolume: TGeoVolumeAssembly,
     public val fBBoxOK: Boolean = true
 ) : TGeoBBox()

cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/TGeoVolume.kt

@@ -1,5 +1,6 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.Contextual
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -12,9 +13,18 @@ public open class TGeoVolume : TNamed(){
 //    "fLineWidth" : 1,
 //    "fFillColor" : 19,
 //    "fFillStyle" : 1001,
+    @Contextual
     public lateinit var fNodes: TObjArray
+        internal set
+
+    @Contextual
     public lateinit var fShape: TGeoShape
+        internal set
+
+    @Contextual
     public lateinit var fMedium: TGeoMedium
+        internal set
+
     public val fNumber: Int = 1
     public val fNtotal: Int = 1
     public val fRefCount: Int = 1

cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/TObject.kt

@@ -10,15 +10,23 @@ public abstract class TObject {
 }
 
 @Serializable
-public abstract class TNamed : TObject() {
+public open class TNamed : TObject() {
     public val fName: String = ""
     public val fTitle: String = ""
 }
 
 @Serializable
 @SerialName("TObjArray")
-public class TObjArray(public val arr: List<TObject>){
+public class TObjArray(public val arr: List<TObject>): TObject() {
     public companion object{
-        public val empty = TObjArray(emptyList())
+        public val empty: TObjArray = TObjArray(emptyList())
     }
 }
+
+@Serializable
+@SerialName("TList")
+public class TList(public val arr: List<TObject>): TObject()
+
+@Serializable
+@SerialName("THashList")
+public class THashList(public val arr: List<TObject>): TObject()

cern-root-loader/src/commonMain/kotlin/ru/mipt/npm/root/rootJson.kt

@@ -1,107 +1,223 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.DeserializationStrategy
+import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.KSerializer
-import kotlinx.serialization.descriptors.SerialDescriptor
 import kotlinx.serialization.encoding.Decoder
-import kotlinx.serialization.encoding.Encoder
 import kotlinx.serialization.json.*
-import kotlinx.serialization.modules.PolymorphicModuleBuilder
+import kotlinx.serialization.modules.*
-import kotlinx.serialization.modules.SerializersModule
+import kotlin.reflect.KClass
-import kotlinx.serialization.modules.polymorphic
-import kotlinx.serialization.modules.subclass
 
 
-private typealias  RefCache = MutableList<TObject>
+/**
+ * Load Json encoded TObject
+ */
+public fun TObject.Companion.decodeFromJson(serializer: KSerializer<out TObject>, jsonElement: JsonElement): TObject =
+    RootDecoder.decode(serializer, jsonElement)
 
-private class RootJsonSerializer<T : TObject>(
+public fun TObject.Companion.decodeFromString(serializer: KSerializer<out TObject>, string: String): TObject {
-    private val refCache: RefCache,
+    val json = RootDecoder.json.parseToJsonElement(string)
-    private val tSerializer: KSerializer<T>
+    return RootDecoder.decode(serializer, json)
-) : KSerializer<T> {
+}
 
-    override val descriptor: SerialDescriptor get() = tSerializer.descriptor
+private object RootDecoder {
+
+    private class RootUnrefSerializer<T>(
+        private val tSerializer: KSerializer<T>,
+        private val refCache: MutableList<RefEntry>,// = ArrayList<RefEntry>(4096)
+        private val counter: ReferenceCounter
+    ) : KSerializer<T> by tSerializer {
 
         override fun deserialize(decoder: Decoder): T {
             val input = decoder as JsonDecoder
             val element = input.decodeJsonElement()
             val refId = (element as? JsonObject)?.get("\$ref")?.jsonPrimitive?.int
-        return if (refId != null) {
+            val ref = if (refId != null) {
                 //Do unref
-            val refValue = refCache[refId]
+                refCache[refId]
-            refValue as T //TODO research means to make it safe
             } else {
-            val res = input.json.decodeFromJsonElement(tSerializer, element)
+                refCache[counter.value].also {
-            //val uid = res.fUniqueID
+                    counter.increment()
-            refCache.add(res)
+                }
-            res
+            }
+            return ref.value(tSerializer) as T //TODO research means to make it safe
         }
     }
 
-    override fun serialize(encoder: Encoder, value: T) {
+    private fun <T> KSerializer<T>.unref(refCache: MutableList<RefEntry>, counter: ReferenceCounter): KSerializer<T> =
-        tSerializer.serialize(encoder, value)
+        RootUnrefSerializer(this, refCache, counter)
+
+    @OptIn(ExperimentalSerializationApi::class)
+    fun unrefSerializersModule(
+        refCache: MutableList<RefEntry>, counter: ReferenceCounter
+    ): SerializersModule = SerializersModule {
+        val collector = this
+        val unrefCollector = object : SerializersModuleCollector {
+
+            override fun <T : Any> contextual(
+                kClass: KClass<T>,
+                provider: (typeArgumentsSerializers: List<KSerializer<*>>) -> KSerializer<*>
+            ) {
+                collector.contextual(kClass) { provider(it).unref(refCache, counter) }
             }
 
+            override fun <Base : Any, Sub : Base> polymorphic(
+                baseClass: KClass<Base>,
+                actualClass: KClass<Sub>,
+                actualSerializer: KSerializer<Sub>
+            ) {
+                collector.polymorphic(baseClass, actualClass, actualSerializer.unref(refCache, counter))
             }
 
-private fun <T : TObject> KSerializer<T>.unref(refCache: RefCache): RootJsonSerializer<T> =
+            override fun <Base : Any> polymorphicDefault(
-    RootJsonSerializer(refCache, this)
+                baseClass: KClass<Base>,
-
+                defaultSerializerProvider: (className: String?) -> DeserializationStrategy<out Base>?
-
+            ) {
-private fun PolymorphicModuleBuilder<TGeoShape>.shapes(refCache: RefCache) {
+                collector.polymorphicDefault(baseClass) {
-    subclass(TGeoBBox.serializer().unref(refCache))
+                    (defaultSerializerProvider(it) as KSerializer<out Base>).unref(refCache, counter)
-    subclass(TGeoCompositeShape.serializer().unref(refCache))
-    subclass(TGeoXtru.serializer().unref(refCache))
-    subclass(TGeoTube.serializer().unref(refCache))
-    subclass(TGeoTubeSeg.serializer().unref(refCache))
-    subclass(TGeoShapeAssembly.serializer().unref(refCache))
                 }
-
+            }
-private fun PolymorphicModuleBuilder<TGeoMatrix>.matrices(refCache: RefCache) {
+        }
-    subclass(TGeoIdentity.serializer().unref(refCache))
+        serializersModule.dumpTo(unrefCollector)
-    subclass(TGeoHMatrix.serializer().unref(refCache))
-    subclass(TGeoTranslation.serializer().unref(refCache))
-    subclass(TGeoRotation.serializer().unref(refCache))
-    subclass(TGeoCombiTrans.serializer().unref(refCache))
     }
 
     /**
      * Create an instance of Json with unfolding Root references. This instance could not be reused because of the cache.
      */
-internal fun rootJson(): Json {
+    private fun unrefJson(refCache: MutableList<RefEntry>, counter: ReferenceCounter): Json = Json {
-    val refCache = ArrayList<TObject>(4096)
-    return Json {
         encodeDefaults = true
         ignoreUnknownKeys = true
         classDiscriminator = "_typename"
-        serializersModule = SerializersModule {
+        serializersModule = unrefSerializersModule(refCache, counter)
+    }
+
+
+    fun decode(sourceDeserializer: KSerializer<out TObject>, source: JsonElement): TObject {
+        val counter = ReferenceCounter()
+        val refCache = ArrayList<RefEntry>()
+
+        fun fillCache(element: JsonElement) {
+            when (element) {
+                is JsonObject -> {
+                    if (element["_typename"] != null) {
+                        refCache.add(RefEntry(element))
+                    }
+                    element.values.forEach {
+                        fillCache(it)
+                    }
+                }
+                is JsonArray -> {
+                    element.forEach {
+                        fillCache(it)
+                    }
+                }
+                else -> {
+                }
+            }
+        }
+        fillCache(source)
+
+        return unrefJson(refCache, counter).decodeFromJsonElement(sourceDeserializer.unref(refCache, counter), source)
+    }
+
+    class ReferenceCounter(var value: Int = 0) {
+        fun increment() {
+            value += 1
+        }
+
+        override fun toString(): String = value.toString()
+    }
+
+    class RefEntry(val obj: JsonObject) {
+
+        private var cachedValue: Any? = null
+
+        fun value(serializer: KSerializer<*>): Any {
+            if (cachedValue == null) {
+                cachedValue = json.decodeFromJsonElement(serializer, obj)
+            }
+            return cachedValue!!
+        }
+
+        override fun toString(): String = obj.toString()
+    }
+
+    private fun PolymorphicModuleBuilder<TGeoShape>.shapes() {
+        subclass(TGeoBBox.serializer())
+        subclass(TGeoCompositeShape.serializer())
+        subclass(TGeoXtru.serializer())
+        subclass(TGeoTube.serializer())
+        subclass(TGeoTubeSeg.serializer())
+        subclass(TGeoShapeAssembly.serializer())
+    }
+
+    private fun PolymorphicModuleBuilder<TGeoMatrix>.matrices() {
+        subclass(TGeoIdentity.serializer())
+        subclass(TGeoHMatrix.serializer())
+        subclass(TGeoTranslation.serializer())
+        subclass(TGeoRotation.serializer())
+        subclass(TGeoCombiTrans.serializer())
+    }
+
+    private fun PolymorphicModuleBuilder<TGeoBoolNode>.boolNodes() {
+        subclass(TGeoIntersection.serializer())
+        subclass(TGeoUnion.serializer())
+        subclass(TGeoSubtraction.serializer())
+    }
+
+    private val serializersModule = SerializersModule {
+        contextual(TGeoManager::class) { TGeoManager.serializer() }
+        contextual(TObjArray::class) { TObjArray.serializer() }
+        contextual(TGeoVolumeAssembly::class) { TGeoVolumeAssembly.serializer() }
+        contextual(TGeoShapeAssembly::class) { TGeoShapeAssembly.serializer() }
+        contextual(TGeoRotation::class) { TGeoRotation.serializer() }
+        contextual(TGeoMedium::class) { TGeoMedium.serializer() }
+
         polymorphic(TGeoShape::class) {
-                default { TGeoBBox.serializer().unref(refCache) }
+            default { TGeoBBox.serializer() }
-                shapes(refCache)
+            shapes()
         }
 
         polymorphic(TGeoMatrix::class) {
-                matrices(refCache)
+            matrices()
+        }
+
+        polymorphic(TGeoBoolNode::class) {
+            boolNodes()
         }
 
         polymorphic(TObject::class) {
-                shapes(refCache)
+            subclass(TObjArray.serializer())
-                matrices(refCache)
 
-                subclass(TGeoMaterial.serializer().unref(refCache))
+            shapes()
-                subclass(TGeoMixture.serializer().unref(refCache))
+            matrices()
+            boolNodes()
 
-                subclass(TGeoMedium.serializer().unref(refCache))
+            subclass(TGeoMaterial.serializer())
+            subclass(TGeoMixture.serializer())
 
-                subclass(TGeoNode.serializer().unref(refCache))
+            subclass(TGeoMedium.serializer())
-                subclass(TGeoNodeMatrix.serializer().unref(refCache))
+
-                subclass(TGeoVolume.serializer().unref(refCache))
+            subclass(TGeoNode.serializer())
-                subclass(TGeoVolumeAssembly.serializer().unref(refCache))
+            subclass(TGeoNodeMatrix.serializer())
+            subclass(TGeoVolume.serializer())
+            subclass(TGeoVolumeAssembly.serializer())
         }
-            polymorphic(TGeoNode::class, TGeoNode.serializer().unref(refCache)) {
+
-                subclass(TGeoNodeMatrix.serializer().unref(refCache))
+        polymorphic(TGeoNode::class, TGeoNode.serializer()) {
+            subclass(TGeoNodeMatrix.serializer())
         }
-            polymorphic(TGeoVolume::class, TGeoVolume.serializer().unref(refCache)) {
+
-                subclass(TGeoVolumeAssembly.serializer().unref(refCache))
+        polymorphic(TGeoVolume::class, TGeoVolume.serializer()) {
+            subclass(TGeoVolumeAssembly.serializer())
         }
     }
+
+    val json = Json {
+        encodeDefaults = true
+        ignoreUnknownKeys = true
+        classDiscriminator = "_typename"
+        serializersModule = this@RootDecoder.serializersModule
     }
+
 }

cern-root-loader/src/jvmTest/kotlin/ru/mipt/npm/root/loadBM@N.kt

@@ -1,7 +1,31 @@
 package ru.mipt.npm.root
 
+import kotlinx.serialization.json.*
+
+private fun JsonElement.countTypes(): Sequence<String> = sequence {
+    val json = this@countTypes
+    when (json){
+        is JsonObject -> {
+            json["_typename"]?.let { yield(it.jsonPrimitive.content) }
+            json.values.forEach { yieldAll(it.countTypes()) }
+        }
+        is JsonArray -> {
+            json.forEach {
+                yieldAll(it.countTypes())
+            }
+        }
+        else -> {}
+    }
+}
+
 fun main() {
     val string = TGeoManager::class.java.getResourceAsStream("/BM@N.root.json")!!
         .readAllBytes().decodeToString()
-    val geo = TGeoManager.decodeFromString(string)
+    val json = Json.parseToJsonElement(string)
+    val sizes = json.countTypes().groupBy { it }.mapValues { it.value.size }
+    sizes.forEach {
+        println(it)
+    }
+
+    val geo = TObject.decodeFromString(TGeoManager.serializer(), string)
 }