Migration to 1.4

build.gradle.kts

@@ -1,13 +1,10 @@
 plugins {
-    val toolsVersion = "0.6.0"
+    id("kscience.publish") apply false
-    id("kscience.mpp") version toolsVersion apply false
-    id("kscience.jvm") version toolsVersion apply false
-    id("kscience.publish") version toolsVersion apply false
     id("org.jetbrains.dokka") version "1.4.0-rc"
     id("org.jetbrains.changelog") version "0.4.0"
 }
 
-val dataforgeVersion by extra("0.1.9-dev-1")
+val dataforgeVersion by extra("0.1.9-dev-2")
 
 val bintrayRepo by extra("dataforge")
 val githubProject by extra("dataforge-core")

dataforge-context/build.gradle.kts

@@ -4,16 +4,20 @@ plugins {
 
 description = "Context and provider definitions"
 
-kscience{
+kscience {
     useCoroutines()
 }
 
+repositories {
+    maven("https://maven.pkg.github.com/altavir/kotlin-logging")
+}
+
 kotlin {
     sourceSets {
         val commonMain by getting {
             dependencies {
                 api(project(":dataforge-meta"))
-                api("io.github.microutils:kotlin-logging:1.9.0")
+                api("io.github.microutils:kotlin-logging:1.9.0-dev-npm")
             }
         }
         val jvmMain by getting {

dataforge-data/src/commonMain/kotlin/hep/dataforge/data/dataCast.kt

@@ -20,12 +20,12 @@ inline fun <reified R : Any, T : R> Data<T>.upcast(): Data<R> = upcast(R::class)
 /**
  * Check if node could be safely cast to given class
  */
-expect fun <R : Any> DataNode<*>.canCast(type: KClass<out R>): Boolean
+internal expect fun <R : Any> DataNode<*>.canCast(type: KClass<out R>): Boolean
 
 /**
  * Check if data could be safely cast to given class
  */
-expect fun <R : Any> Data<*>.canCast(type: KClass<out R>): Boolean
+internal expect fun <R : Any> Data<*>.canCast(type: KClass<out R>): Boolean
 
 fun <R : Any> DataItem<*>.canCast(type: KClass<out R>): Boolean = when (this) {
     is DataItem.Node -> node.canCast(type)

dataforge-data/src/jsMain/kotlin/hep/dataforge/data/dataJS.kt

@@ -5,12 +5,12 @@ import kotlin.reflect.KClass
 /**
  * Check that node is compatible with given type meaning that each element could be cast to the type
  */
-actual fun <R : Any> DataNode<*>.canCast(type: KClass<out R>): Boolean {
+internal actual fun <R : Any> DataNode<*>.canCast(type: KClass<out R>): Boolean {
     //Not supported in js yet
     return true
 }
 
-actual fun <R : Any> Data<*>.canCast(type: KClass<out R>): Boolean {
+internal actual fun <R : Any> Data<*>.canCast(type: KClass<out R>): Boolean {
     //Not supported in js yet
     return true
 }

dataforge-data/src/jvmMain/kotlin/hep/dataforge/data/dataJVM.kt

@@ -8,28 +8,28 @@ import kotlin.reflect.full.isSuperclassOf
 /**
  * Block the thread and get data content
  */
-fun <T : Any> Data<T>.get(): T = runBlocking { await() }
+public fun <T : Any> Data<T>.get(): T = runBlocking { await() }
 
 /**
  * Check that node is compatible with given type meaning that each element could be cast to the type
  */
-actual fun <R : Any> DataNode<*>.canCast(type: KClass<out R>): Boolean =
+internal actual fun <R : Any> DataNode<*>.canCast(type: KClass<out R>): Boolean =
     type.isSuperclassOf(type)
 
-actual fun <R : Any> Data<*>.canCast(type: KClass<out R>): Boolean =
+internal actual fun <R : Any> Data<*>.canCast(type: KClass<out R>): Boolean =
     this.type.isSubclassOf(type)
 
 /**
  * Cast the node to given type if the cast is possible or return null
  */
-fun <R : Any> Data<*>.filterIsInstance(type: KClass<out R>): Data<R>? =
+public fun <R : Any> Data<*>.filterIsInstance(type: KClass<out R>): Data<R>? =
     if (canCast(type)) cast(type) else null
 
 /**
  * Filter a node by data and node type. Resulting node and its subnodes is guaranteed to have border type [type],
  * but could contain empty nodes
  */
-fun <R : Any> DataNode<*>.filterIsInstance(type: KClass<out R>): DataNode<R> {
+public fun <R : Any> DataNode<*>.filterIsInstance(type: KClass<out R>): DataNode<R> {
     return when {
         canCast(type) -> cast(type)
         this is TypeFilteredDataNode -> origin.filterIsInstance(type)

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Consumer.kt

@@ -0,0 +1,11 @@
+package hep.dataforge.io
+
+import hep.dataforge.meta.DFExperimental
+
+/**
+ * A fire-and-forget consumer of messages
+ */
+@DFExperimental
+public interface Consumer {
+    public fun consume(message: Envelope): Unit
+}

dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Responder.kt

@@ -1,21 +1,12 @@
 package hep.dataforge.io
 
-import hep.dataforge.meta.DFExperimental
-
 /**
  * An object that could respond to external messages asynchronously
  */
-interface Responder {
+public interface Responder {
     /**
      * Send a request and wait for response for this specific request
      */
-    suspend fun respond(request: Envelope): Envelope
+    public suspend fun respond(request: Envelope): Envelope
 }
 
-/**
- * A fire-and-forget consumer of messages
- */
-@DFExperimental
-interface Consumer {
-    fun consume(message: Envelope): Unit
-}

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/Config.kt

@@ -4,16 +4,13 @@ import hep.dataforge.names.Name
 import hep.dataforge.names.NameToken
 import hep.dataforge.names.asName
 import hep.dataforge.names.plus
+import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.KSerializer
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.Serializer
 import kotlinx.serialization.descriptors.SerialDescriptor
 import kotlinx.serialization.encoding.Decoder
 import kotlinx.serialization.encoding.Encoder
-import kotlin.collections.HashSet
-import kotlin.collections.forEach
-import kotlin.collections.mapValues
-import kotlin.collections.removeAll
 import kotlin.collections.set
 
 //TODO add validator to configuration
@@ -24,15 +21,15 @@ public data class MetaListener(
 )
 
 public interface ObservableMeta : Meta {
-    fun onChange(owner: Any?, action: (name: Name, oldItem: MetaItem<*>?, newItem: MetaItem<*>?) -> Unit)
+    public fun onChange(owner: Any?, action: (name: Name, oldItem: MetaItem<*>?, newItem: MetaItem<*>?) -> Unit)
-    fun removeListener(owner: Any?)
+    public fun removeListener(owner: Any?)
 }
 
 /**
  * Mutable meta representing object state
  */
 @Serializable
-class Config : AbstractMutableMeta<Config>(), ObservableMeta {
+public class Config : AbstractMutableMeta<Config>(), ObservableMeta {
 
     private val listeners = HashSet<MetaListener>()
 
@@ -78,10 +75,11 @@ class Config : AbstractMutableMeta<Config>(), ObservableMeta {
 
     override fun empty(): Config = Config()
 
+    @OptIn(ExperimentalSerializationApi::class)
     @Serializer(Config::class)
-    companion object ConfigSerializer : KSerializer<Config> {
+    public companion object ConfigSerializer : KSerializer<Config> {
 
-        fun empty(): Config = Config()
+        public fun empty(): Config = Config()
         override val descriptor: SerialDescriptor get() = MetaSerializer.descriptor
 
         override fun deserialize(decoder: Decoder): Config {
@@ -94,9 +92,9 @@ class Config : AbstractMutableMeta<Config>(), ObservableMeta {
     }
 }
 
-operator fun Config.get(token: NameToken): MetaItem<Config>? = items[token]
+public operator fun Config.get(token: NameToken): MetaItem<Config>? = items[token]
 
-fun Meta.asConfig(): Config = this as? Config ?: Config().also { builder ->
+public fun Meta.asConfig(): Config = this as? Config ?: Config().also { builder ->
     this.items.mapValues { entry ->
         val item = entry.value
         builder[entry.key.asName()] = when (item) {

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/Configurable.kt

@@ -14,21 +14,21 @@ import kotlin.reflect.KProperty
  * It is not possible to know if some property is declared by provider just by looking on [Configurable],
  * this information should be provided externally.
  */
-interface Configurable : Described, MutableItemProvider {
+public interface Configurable : Described, MutableItemProvider {
     /**
      * Backing config
      */
-    val config: Config
+    public val config: Config
 
     /**
      * Default meta item provider
      */
-    fun getDefaultItem(name: Name): MetaItem<*>? = null
+    public fun getDefaultItem(name: Name): MetaItem<*>? = null
 
     /**
      * Check if property with given [name] could be assigned to [item]
      */
-    fun validateItem(name: Name, item: MetaItem<*>?): Boolean {
+    public fun validateItem(name: Name, item: MetaItem<*>?): Boolean {
         val descriptor = descriptor?.get(name)
         return descriptor?.validateItem(item) ?: true
     }
@@ -53,40 +53,32 @@ interface Configurable : Described, MutableItemProvider {
     }
 }
 
-/**
+public fun Configurable.getItem(key: String): MetaItem<*>? = getItem(key.toName())
- * Reset the property to its default value
- */
-@Deprecated("To be removed since unused", ReplaceWith("setItem(name, null)"))
-fun Configurable.resetProperty(name: Name) {
-    setItem(name, null)
-}
 
-fun Configurable.getItem(key: String) = getItem(key.toName())
+public fun Configurable.setItem(name: Name, value: Value?): Unit = setItem(name, value?.let { MetaItem.ValueItem(value) })
+public fun Configurable.setItem(name: Name, meta: Meta?): Unit = setItem(name, meta?.let { MetaItem.NodeItem(meta) })
 
-fun Configurable.setItem(name: Name, value: Value?) = setItem(name, value?.let { MetaItem.ValueItem(value) })
+public fun Configurable.setItem(key: String, item: MetaItem<*>?): Unit = setItem(key.toName(), item)
-fun Configurable.setItem(name: Name, meta: Meta?) = setItem(name, meta?.let { MetaItem.NodeItem(meta) })
 
-fun Configurable.setItem(key: String, item: MetaItem<*>?) = setItem(key.toName(), item)
+public fun Configurable.setItem(key: String, value: Value?): Unit = setItem(key, value?.let { MetaItem.ValueItem(value) })
+public fun Configurable.setItem(key: String, meta: Meta?): Unit = setItem(key, meta?.let { MetaItem.NodeItem(meta) })
 
-fun Configurable.setItem(key: String, value: Value?) = setItem(key, value?.let { MetaItem.ValueItem(value) })
+public fun <T : Configurable> T.configure(meta: Meta): T = this.apply { config.update(meta) }
-fun Configurable.setItem(key: String, meta: Meta?) = setItem(key, meta?.let { MetaItem.NodeItem(meta) })
-
-fun <T : Configurable> T.configure(meta: Meta): T = this.apply { config.update(meta) }
 
 @DFBuilder
-inline fun <T : Configurable> T.configure(action: Config.() -> Unit): T = apply { config.apply(action) }
+public inline fun <T : Configurable> T.configure(action: Config.() -> Unit): T = apply { config.apply(action) }
 
 /* Node delegates */
 
-fun Configurable.config(key: Name? = null): ReadWriteProperty<Any?, Config?> =
+public fun Configurable.config(key: Name? = null): ReadWriteProperty<Any?, Config?> =
     config.node(key)
 
-fun MutableItemProvider.node(key: Name? = null): ReadWriteProperty<Any?, Meta?> = item(key).convert(
+public fun MutableItemProvider.node(key: Name? = null): ReadWriteProperty<Any?, Meta?> = item(key).convert(
     reader = { it.node },
     writer = { it?.let { MetaItem.NodeItem(it) } }
 )
 
-fun <T : Configurable> Configurable.spec(
+public fun <T : Configurable> Configurable.spec(
     spec: Specification<T>, key: Name? = null
 ): ReadWriteProperty<Any?, T?> = object : ReadWriteProperty<Any?, T?> {
     override fun getValue(thisRef: Any?, property: KProperty<*>): T? {
@@ -100,7 +92,7 @@ fun <T : Configurable> Configurable.spec(
     }
 }
 
-fun <T : Configurable> Configurable.spec(
+public fun <T : Configurable> Configurable.spec(
     spec: Specification<T>, default: T, key: Name? = null
 ): ReadWriteProperty<Any?, T> = object : ReadWriteProperty<Any?, T> {
     override fun getValue(thisRef: Any?, property: KProperty<*>): T {

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/ItemDelegate.kt

@@ -19,7 +19,7 @@ open class ItemDelegate(
     }
 }
 
-fun ItemProvider.item(key: Name? = null): ItemDelegate = ItemDelegate(this, key)
+public fun ItemProvider.item(key: Name? = null): ItemDelegate = ItemDelegate(this, key)
 
 //TODO add caching for sealed nodes
 
@@ -29,62 +29,62 @@ fun ItemProvider.item(key: Name? = null): ItemDelegate = ItemDelegate(this, key)
 /**
  * A property delegate that uses custom key
  */
-fun ItemProvider.value(key: Name? = null): ReadOnlyProperty<Any?, Value?> =
+public fun ItemProvider.value(key: Name? = null): ReadOnlyProperty<Any?, Value?> =
     item(key).convert(MetaConverter.value)
 
-fun ItemProvider.string(key: Name? = null): ReadOnlyProperty<Any?, String?> =
+public fun ItemProvider.string(key: Name? = null): ReadOnlyProperty<Any?, String?> =
     item(key).convert(MetaConverter.string)
 
-fun ItemProvider.boolean(key: Name? = null): ReadOnlyProperty<Any?, Boolean?> =
+public fun ItemProvider.boolean(key: Name? = null): ReadOnlyProperty<Any?, Boolean?> =
     item(key).convert(MetaConverter.boolean)
 
-fun ItemProvider.number(key: Name? = null): ReadOnlyProperty<Any?, Number?> =
+public fun ItemProvider.number(key: Name? = null): ReadOnlyProperty<Any?, Number?> =
     item(key).convert(MetaConverter.number)
 
-fun ItemProvider.double(key: Name? = null): ReadOnlyProperty<Any?, Double?> =
+public fun ItemProvider.double(key: Name? = null): ReadOnlyProperty<Any?, Double?> =
     item(key).convert(MetaConverter.double)
 
-fun ItemProvider.float(key: Name? = null): ReadOnlyProperty<Any?, Float?> =
+public fun ItemProvider.float(key: Name? = null): ReadOnlyProperty<Any?, Float?> =
     item(key).convert(MetaConverter.float)
 
-fun ItemProvider.int(key: Name? = null): ReadOnlyProperty<Any?, Int?> =
+public fun ItemProvider.int(key: Name? = null): ReadOnlyProperty<Any?, Int?> =
     item(key).convert(MetaConverter.int)
 
-fun ItemProvider.long(key: Name? = null): ReadOnlyProperty<Any?, Long?> =
+public fun ItemProvider.long(key: Name? = null): ReadOnlyProperty<Any?, Long?> =
     item(key).convert(MetaConverter.long)
 
-fun ItemProvider.node(key: Name? = null): ReadOnlyProperty<Any?, Meta?> =
+public fun ItemProvider.node(key: Name? = null): ReadOnlyProperty<Any?, Meta?> =
     item(key).convert(MetaConverter.meta)
 
-fun ItemProvider.string(default: String, key: Name? = null): ReadOnlyProperty<Any?, String> =
+public fun ItemProvider.string(default: String, key: Name? = null): ReadOnlyProperty<Any?, String> =
     item(key).convert(MetaConverter.string) { default }
 
-fun ItemProvider.boolean(default: Boolean, key: Name? = null): ReadOnlyProperty<Any?, Boolean> =
+public fun ItemProvider.boolean(default: Boolean, key: Name? = null): ReadOnlyProperty<Any?, Boolean> =
     item(key).convert(MetaConverter.boolean) { default }
 
-fun ItemProvider.number(default: Number, key: Name? = null): ReadOnlyProperty<Any?, Number> =
+public fun ItemProvider.number(default: Number, key: Name? = null): ReadOnlyProperty<Any?, Number> =
     item(key).convert(MetaConverter.number) { default }
 
-fun ItemProvider.double(default: Double, key: Name? = null): ReadOnlyProperty<Any?, Double> =
+public fun ItemProvider.double(default: Double, key: Name? = null): ReadOnlyProperty<Any?, Double> =
     item(key).convert(MetaConverter.double) { default }
 
-fun ItemProvider.float(default: Float, key: Name? = null): ReadOnlyProperty<Any?, Float> =
+public fun ItemProvider.float(default: Float, key: Name? = null): ReadOnlyProperty<Any?, Float> =
     item(key).convert(MetaConverter.float) { default }
 
-fun ItemProvider.int(default: Int, key: Name? = null): ReadOnlyProperty<Any?, Int> =
+public fun ItemProvider.int(default: Int, key: Name? = null): ReadOnlyProperty<Any?, Int> =
     item(key).convert(MetaConverter.int) { default }
 
-fun ItemProvider.long(default: Long, key: Name? = null): ReadOnlyProperty<Any?, Long> =
+public fun ItemProvider.long(default: Long, key: Name? = null): ReadOnlyProperty<Any?, Long> =
     item(key).convert(MetaConverter.long) { default }
 
-inline fun <reified E : Enum<E>> ItemProvider.enum(default: E, key: Name? = null): ReadOnlyProperty<Any?, E> =
+public inline fun <reified E : Enum<E>> ItemProvider.enum(default: E, key: Name? = null): ReadOnlyProperty<Any?, E> =
     item(key).convert(MetaConverter.enum()) { default }
 
-fun ItemProvider.string(key: Name? = null, default: () -> String): ReadOnlyProperty<Any?, String> =
+public fun ItemProvider.string(key: Name? = null, default: () -> String): ReadOnlyProperty<Any?, String> =
     item(key).convert(MetaConverter.string, default)
 
-fun ItemProvider.boolean(key: Name? = null, default: () -> Boolean): ReadOnlyProperty<Any?, Boolean> =
+public fun ItemProvider.boolean(key: Name? = null, default: () -> Boolean): ReadOnlyProperty<Any?, Boolean> =
     item(key).convert(MetaConverter.boolean, default)
 
-fun ItemProvider.number(key: Name? = null, default: () -> Number): ReadOnlyProperty<Any?, Number> =
+public fun ItemProvider.number(key: Name? = null, default: () -> Number): ReadOnlyProperty<Any?, Number> =
     item(key).convert(MetaConverter.number, default)

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/JsonMeta.kt

@@ -15,7 +15,7 @@ import kotlinx.serialization.json.*
 /**
  * @param descriptor reserved for custom serialization in future
  */
-fun Value.toJson(descriptor: ValueDescriptor? = null): JsonElement {
+public fun Value.toJson(descriptor: ValueDescriptor? = null): JsonElement {
     return if (isList()) {
         JsonArray(list.map { it.toJson() })
     } else {
@@ -82,11 +82,11 @@ private fun Meta.toJsonWithIndex(descriptor: NodeDescriptor?, indexValue: String
     return JsonObject(elementMap)
 }
 
-fun Meta.toJson(descriptor: NodeDescriptor? = null): JsonObject = toJsonWithIndex(descriptor, null)
+public fun Meta.toJson(descriptor: NodeDescriptor? = null): JsonObject = toJsonWithIndex(descriptor, null)
 
-fun JsonObject.toMeta(descriptor: NodeDescriptor? = null): JsonMeta = JsonMeta(this, descriptor)
+public fun JsonObject.toMeta(descriptor: NodeDescriptor? = null): JsonMeta = JsonMeta(this, descriptor)
 
-fun JsonPrimitive.toValue(descriptor: ValueDescriptor?): Value {
+public fun JsonPrimitive.toValue(descriptor: ValueDescriptor?): Value {
     return when (this) {
         JsonNull -> Null
         else -> {
@@ -99,7 +99,7 @@ fun JsonPrimitive.toValue(descriptor: ValueDescriptor?): Value {
     }
 }
 
-fun JsonElement.toMetaItem(descriptor: ItemDescriptor? = null): MetaItem<JsonMeta> = when (this) {
+public fun JsonElement.toMetaItem(descriptor: ItemDescriptor? = null): MetaItem<JsonMeta> = when (this) {
     is JsonPrimitive -> {
         val value = this.toValue(descriptor as? ValueDescriptor)
         MetaItem.ValueItem(value)
@@ -129,7 +129,7 @@ fun JsonElement.toMetaItem(descriptor: ItemDescriptor? = null): MetaItem<JsonMet
 /**
  * A meta wrapping json object
  */
-class JsonMeta(val json: JsonObject, val descriptor: NodeDescriptor? = null) : MetaBase() {
+public class JsonMeta(private val json: JsonObject, private val descriptor: NodeDescriptor? = null) : MetaBase() {
 
     private fun buildItems(): Map<NameToken, MetaItem<JsonMeta>> {
         val map = LinkedHashMap<NameToken, MetaItem<JsonMeta>>()
@@ -173,10 +173,10 @@ class JsonMeta(val json: JsonObject, val descriptor: NodeDescriptor? = null) : M
 
     override val items: Map<NameToken, MetaItem<JsonMeta>> by lazy(::buildItems)
 
-    companion object {
+    public companion object {
         /**
          * A key representing top-level json array of nodes, which could not be directly represented by a meta node
          */
-        const val JSON_ARRAY_KEY = "@jsonArray"
+        public const val JSON_ARRAY_KEY: String = "@jsonArray"
     }
 }

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/Laminate.kt

@@ -7,9 +7,9 @@ import hep.dataforge.names.NameToken
  * A meta laminate consisting of multiple immutable meta layers. For mutable front layer, use [Scheme].
  * If [layers] list contains a [Laminate] it is flat-mapped.
  */
-class Laminate(layers: List<Meta>) : MetaBase() {
+public class Laminate(layers: List<Meta>) : MetaBase() {
 
-    val layers: List<Meta> = layers.flatMap {
+    public val layers: List<Meta> = layers.flatMap {
         if (it is Laminate) {
             it.layers
         } else {
@@ -17,7 +17,7 @@ class Laminate(layers: List<Meta>) : MetaBase() {
         }
     }
 
-    constructor(vararg layers: Meta?) : this(layers.filterNotNull())
+    public constructor(vararg layers: Meta?) : this(layers.filterNotNull())
 
     override val items: Map<NameToken, MetaItem<Meta>> by lazy {
         layers.map { it.items.keys }.flatten().associateWith { key ->
@@ -28,21 +28,21 @@ class Laminate(layers: List<Meta>) : MetaBase() {
     /**
      * Generate sealed meta using [mergeRule]
      */
-    fun merge(): SealedMeta {
+    public fun merge(): SealedMeta {
         val items = layers.map { it.items.keys }.flatten().associateWith { key ->
             layers.asSequence().map { it.items[key] }.filterNotNull().merge()
         }
         return SealedMeta(items)
     }
 
-    companion object {
+    public companion object {
 
         /**
          * The default rule which always uses the first found item in sequence alongside with its children.
          *
          * TODO add picture
          */
-        val replaceRule: (Sequence<MetaItem<*>>) -> MetaItem<SealedMeta> = { it.first().seal() }
+        public val replaceRule: (Sequence<MetaItem<*>>) -> MetaItem<SealedMeta> = { it.first().seal() }
 
         private fun Sequence<MetaItem<*>>.merge(): MetaItem<SealedMeta> {
             return when {
@@ -76,14 +76,14 @@ class Laminate(layers: List<Meta>) : MetaBase() {
          * The values a replaced but meta children are joined
          * TODO add picture
          */
-        val mergeRule: (Sequence<MetaItem<*>>) -> MetaItem<SealedMeta> = { it.merge() }
+        public val mergeRule: (Sequence<MetaItem<*>>) -> MetaItem<SealedMeta> = { it.merge() }
     }
 }
 
 /**
  * Performance optimized version of get method
  */
-fun Laminate.getFirst(name: Name): MetaItem<*>? {
+public fun Laminate.getFirst(name: Name): MetaItem<*>? {
     layers.forEach { layer ->
         layer[name]?.let { return it }
     }
@@ -93,11 +93,11 @@ fun Laminate.getFirst(name: Name): MetaItem<*>? {
 /**
  * Create a new [Laminate] adding given layer to the top
  */
-fun Laminate.withTop(meta: Meta): Laminate = Laminate(listOf(meta) + layers)
+public fun Laminate.withTop(meta: Meta): Laminate = Laminate(listOf(meta) + layers)
 
 /**
  * Create a new [Laminate] adding given layer to the bottom
  */
-fun Laminate.withBottom(meta: Meta): Laminate = Laminate(layers + meta)
+public fun Laminate.withBottom(meta: Meta): Laminate = Laminate(layers + meta)
 
 //TODO add custom rules for Laminate merge

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/Meta.kt

@@ -5,6 +5,7 @@ import hep.dataforge.meta.MetaItem.NodeItem
 import hep.dataforge.meta.MetaItem.ValueItem
 import hep.dataforge.names.*
 import hep.dataforge.values.*
+import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.KSerializer
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.Serializer
@@ -19,18 +20,19 @@ import kotlinx.serialization.encoding.Encoder
  * * a [NodeItem] (node)
  */
 @Serializable
-sealed class MetaItem<out M : Meta> {
+public sealed class MetaItem<out M : Meta> {
 
     abstract override fun equals(other: Any?): Boolean
 
     abstract override fun hashCode(): Int
 
     @Serializable
-    class ValueItem(val value: Value) : MetaItem<Nothing>() {
+    public class ValueItem(public val value: Value) : MetaItem<Nothing>() {
         override fun toString(): String = value.toString()
 
+        @OptIn(ExperimentalSerializationApi::class)
         @Serializer(ValueItem::class)
-        companion object : KSerializer<ValueItem> {
+        public companion object : KSerializer<ValueItem> {
             override val descriptor: SerialDescriptor get() = ValueSerializer.descriptor
 
             override fun deserialize(decoder: Decoder): ValueItem = ValueItem(ValueSerializer.deserialize(decoder))
@@ -50,12 +52,13 @@ sealed class MetaItem<out M : Meta> {
     }
 
     @Serializable
-    class NodeItem<M : Meta>(@Serializable(MetaSerializer::class) val node: M) : MetaItem<M>() {
+    public class NodeItem<M : Meta>(@Serializable(MetaSerializer::class) public val node: M) : MetaItem<M>() {
         //Fixing serializer for node could cause class cast problems, but it should not since Meta descendants are not serializeable
         override fun toString(): String = node.toString()
 
+        @OptIn(ExperimentalSerializationApi::class)
         @Serializer(NodeItem::class)
-        companion object : KSerializer<NodeItem<out Meta>> {
+        public companion object : KSerializer<NodeItem<out Meta>> {
             override val descriptor: SerialDescriptor get() = MetaSerializer.descriptor
 
             override fun deserialize(decoder: Decoder): NodeItem<*> = NodeItem(MetaSerializer.deserialize(decoder))
@@ -70,8 +73,8 @@ sealed class MetaItem<out M : Meta> {
         override fun hashCode(): Int = node.hashCode()
     }
 
-    companion object {
+    public companion object {
-        fun of(arg: Any?): MetaItem<*> {
+        public fun of(arg: Any?): MetaItem<*> {
             return when (arg) {
                 null -> ValueItem(Null)
                 is MetaItem<*> -> arg
@@ -82,19 +85,19 @@ sealed class MetaItem<out M : Meta> {
     }
 }
 
-fun Value.asMetaItem() = ValueItem(this)
+public fun Value.asMetaItem(): ValueItem = ValueItem(this)
-fun <M:Meta> M.asMetaItem() = NodeItem(this)
+public fun <M:Meta> M.asMetaItem(): NodeItem<M> = NodeItem(this)
 
 /**
  * The object that could be represented as [Meta]. Meta provided by [toMeta] method should fully represent object state.
  * Meaning that two states with the same meta are equal.
  */
-interface MetaRepr {
+public interface MetaRepr {
-    fun toMeta(): Meta
+    public fun toMeta(): Meta
 }
 
-interface ItemProvider{
+public interface ItemProvider{
-    fun getItem(name: Name): MetaItem<*>?
+    public fun getItem(name: Name): MetaItem<*>?
 }
 
 /**
@@ -104,11 +107,11 @@ interface ItemProvider{
  *
  *   * Same name siblings are supported via elements with the same [Name] but different queries
  */
-interface Meta : MetaRepr, ItemProvider {
+public interface Meta : MetaRepr, ItemProvider {
     /**
      * Top level items of meta tree
      */
-    val items: Map<NameToken, MetaItem<*>>
+    public val items: Map<NameToken, MetaItem<*>>
 
     override fun getItem(name: Name): MetaItem<*>? {
         if (name.isEmpty()) return NodeItem(this)
@@ -129,15 +132,15 @@ interface Meta : MetaRepr, ItemProvider {
 
     override fun toString(): String
 
-    companion object {
+    public companion object {
-        const val TYPE = "meta"
+        public const val TYPE: String = "meta"
 
         /**
          * A key for single value node
          */
-        const val VALUE_KEY = "@value"
+        public const val VALUE_KEY: String = "@value"
 
-        val EMPTY: Meta = object: MetaBase() {
+        public val EMPTY: Meta = object: MetaBase() {
             override val items: Map<NameToken, MetaItem<*>> = emptyMap()
         }
     }
@@ -150,19 +153,19 @@ interface Meta : MetaRepr, ItemProvider {
  *
  * If [name] is empty return current [Meta] as a [NodeItem]
  */
-operator fun Meta?.get(name: Name): MetaItem<*>? = this?.getItem(name)
+public operator fun Meta?.get(name: Name): MetaItem<*>? = this?.getItem(name)
 
-operator fun Meta?.get(token: NameToken): MetaItem<*>? = this?.items?.get(token)
+public operator fun Meta?.get(token: NameToken): MetaItem<*>? = this?.items?.get(token)
 
 /**
  * Parse [Name] from [key] using full name notation and pass it to [Meta.get]
  */
-operator fun Meta?.get(key: String): MetaItem<*>? = get(key.toName())
+public operator fun Meta?.get(key: String): MetaItem<*>? = get(key.toName())
 
 /**
  * Get a sequence of [Name]-[Value] pairs
  */
-fun Meta.values(): Sequence<Pair<Name, Value>> {
+public fun Meta.values(): Sequence<Pair<Name, Value>> {
     return items.asSequence().flatMap { (key, item) ->
         when (item) {
             is ValueItem -> sequenceOf(key.asName() to item.value)
@@ -174,7 +177,7 @@ fun Meta.values(): Sequence<Pair<Name, Value>> {
 /**
  * Get a sequence of all [Name]-[MetaItem] pairs for all items including nodes
  */
-fun Meta.sequence(): Sequence<Pair<Name, MetaItem<*>>> {
+public fun Meta.sequence(): Sequence<Pair<Name, MetaItem<*>>> {
     return sequence {
         items.forEach { (key, item) ->
             yield(key.asName() to item)
@@ -187,33 +190,33 @@ fun Meta.sequence(): Sequence<Pair<Name, MetaItem<*>>> {
     }
 }
 
-operator fun Meta.iterator(): Iterator<Pair<Name, MetaItem<*>>> = sequence().iterator()
+public operator fun Meta.iterator(): Iterator<Pair<Name, MetaItem<*>>> = sequence().iterator()
 
 /**
  * A meta node that ensures that all of its descendants has at least the same type
  */
-interface MetaNode<out M : MetaNode<M>> : Meta {
+public interface MetaNode<out M : MetaNode<M>> : Meta {
     override val items: Map<NameToken, MetaItem<M>>
 }
 
 /**
  * The same as [Meta.get], but with specific node type
  */
-operator fun <M : MetaNode<M>> M?.get(name: Name): MetaItem<M>? = if( this == null) {
+public operator fun <M : MetaNode<M>> M?.get(name: Name): MetaItem<M>? = if( this == null) {
     null
 } else {
     @Suppress("UNCHECKED_CAST", "ReplaceGetOrSet")
     (this as Meta).get(name) as MetaItem<M>? // Do not change
 }
 
-operator fun <M : MetaNode<M>> M?.get(key: String): MetaItem<M>? = this[key.toName()]
+public operator fun <M : MetaNode<M>> M?.get(key: String): MetaItem<M>? = this[key.toName()]
 
-operator fun <M : MetaNode<M>> M?.get(key: NameToken): MetaItem<M>? = this[key.asName()]
+public operator fun <M : MetaNode<M>> M?.get(key: NameToken): MetaItem<M>? = this[key.asName()]
 
 /**
  * Equals, hashcode and to string for any meta
  */
-abstract class MetaBase : Meta {
+public abstract class MetaBase : Meta {
 
     override fun equals(other: Any?): Boolean = if (other is Meta) {
         this.items == other.items
@@ -229,24 +232,24 @@ abstract class MetaBase : Meta {
 /**
  * Equals and hash code implementation for meta node
  */
-abstract class AbstractMetaNode<M : MetaNode<M>> : MetaNode<M>, MetaBase()
+public abstract class AbstractMetaNode<M : MetaNode<M>> : MetaNode<M>, MetaBase()
 
 /**
  * The meta implementation which is guaranteed to be immutable.
  *
  * If the argument is possibly mutable node, it is copied on creation
  */
-class SealedMeta internal constructor(
+public class SealedMeta internal constructor(
     override val items: Map<NameToken, MetaItem<SealedMeta>>
 ) : AbstractMetaNode<SealedMeta>()
 
 /**
  * Generate sealed node from [this]. If it is already sealed return it as is
  */
-fun Meta.seal(): SealedMeta = this as? SealedMeta ?: SealedMeta(items.mapValues { entry -> entry.value.seal() })
+public fun Meta.seal(): SealedMeta = this as? SealedMeta ?: SealedMeta(items.mapValues { entry -> entry.value.seal() })
 
 @Suppress("UNCHECKED_CAST")
-fun MetaItem<*>.seal(): MetaItem<SealedMeta> = when (this) {
+public fun MetaItem<*>.seal(): MetaItem<SealedMeta> = when (this) {
     is ValueItem -> this
     is NodeItem -> NodeItem(node.seal())
 }
@@ -254,32 +257,32 @@ fun MetaItem<*>.seal(): MetaItem<SealedMeta> = when (this) {
 /**
  * Unsafe methods to access values and nodes directly from [MetaItem]
  */
-val MetaItem<*>?.value: Value?
+public val MetaItem<*>?.value: Value?
     get() = (this as? ValueItem)?.value
         ?: (this?.node?.get(VALUE_KEY) as? ValueItem)?.value
 
-val MetaItem<*>?.string get() = value?.string
+public val MetaItem<*>?.string: String? get() = value?.string
-val MetaItem<*>?.boolean get() = value?.boolean
+public val MetaItem<*>?.boolean: Boolean? get() = value?.boolean
-val MetaItem<*>?.number get() = value?.number
+public val MetaItem<*>?.number: Number? get() = value?.number
-val MetaItem<*>?.double get() = number?.toDouble()
+public val MetaItem<*>?.double: Double? get() = number?.toDouble()
-val MetaItem<*>?.float get() = number?.toFloat()
+public val MetaItem<*>?.float: Float? get() = number?.toFloat()
-val MetaItem<*>?.int get() = number?.toInt()
+public val MetaItem<*>?.int: Int? get() = number?.toInt()
-val MetaItem<*>?.long get() = number?.toLong()
+public val MetaItem<*>?.long: Long? get() = number?.toLong()
-val MetaItem<*>?.short get() = number?.toShort()
+public val MetaItem<*>?.short: Short? get() = number?.toShort()
 
-inline fun <reified E : Enum<E>> MetaItem<*>?.enum(): E? = if (this is ValueItem && this.value is EnumValue<*>) {
+public inline fun <reified E : Enum<E>> MetaItem<*>?.enum(): E? = if (this is ValueItem && this.value is EnumValue<*>) {
     this.value.value as E
 } else {
     string?.let { enumValueOf<E>(it) }
 }
 
-val MetaItem<*>.stringList get() = value?.list?.map { it.string }
+public val MetaItem<*>.stringList: List<String>? get() = value?.list?.map { it.string }
 
-val <M : Meta> MetaItem<M>?.node: M?
+public val <M : Meta> MetaItem<M>?.node: M?
     get() = when (this) {
         null -> null
         is ValueItem -> null//error("Trying to interpret value meta item as node item")
         is NodeItem -> node
     }
 
-fun Meta.isEmpty() = this === Meta.EMPTY || this.items.isEmpty()
+public fun Meta.isEmpty(): Boolean = this === Meta.EMPTY || this.items.isEmpty()

dataforge-scripting/build.gradle.kts

@@ -4,19 +4,19 @@ plugins {
 
 kotlin {
     sourceSets {
-        val commonMain by getting {
+        commonMain {
             dependencies {
                 api(project(":dataforge-workspace"))
                 implementation(kotlin("scripting-common"))
             }
         }
-        val jvmMain by getting {
+        jvmMain{
             dependencies {
                 implementation(kotlin("scripting-jvm-host"))
                 implementation(kotlin("scripting-jvm"))
             }
         }
-        val jvmTest by getting {
+        jvmTest {
             dependencies {
                 implementation("ch.qos.logback:logback-classic:1.2.3")
             }

dataforge-scripting/src/commonMain/kotlin/hep/dataforge/scripting/Placeholder.kt

@@ -1,4 +0,0 @@
-package hep.dataforge.scripting
-
-internal object Placeholder {
-}

dataforge-scripting/src/jvmMain/kotlin/hep/dataforge/scripting/Builders.kt

@@ -13,15 +13,18 @@ import kotlin.script.experimental.jvm.dependenciesFromCurrentContext
 import kotlin.script.experimental.jvm.jvm
 import kotlin.script.experimental.jvmhost.BasicJvmScriptingHost
 
-object Builders {
+public object Builders {
 
-    fun buildWorkspace(source: SourceCode, context: Context = Global): Workspace {
+    private fun buildWorkspace(source: SourceCode, context: Context = Global): Workspace {
         val builder = SimpleWorkspaceBuilder(context)
 
         val workspaceScriptConfiguration = ScriptCompilationConfiguration {
-            baseClass(Any::class)
+//            baseClass(Any::class)
             implicitReceivers(WorkspaceBuilder::class)
-            defaultImports("hep.dataforge.workspace.*")
+            defaultImports(
+                "hep.dataforge.meta.*",
+                "hep.dataforge.workspace.*"
+            )
             jvm {
                 dependenciesFromCurrentContext(wholeClasspath = true)
             }
@@ -49,7 +52,7 @@ object Builders {
         return builder.build()
     }
 
-    fun buildWorkspace(file: File): Workspace = buildWorkspace(file.toScriptSource())
+    public fun buildWorkspace(file: File): Workspace = buildWorkspace(file.toScriptSource())
 
-    fun buildWorkspace(string: String): Workspace = buildWorkspace(string.toScriptSource())
+    public fun buildWorkspace(string: String): Workspace = buildWorkspace(string.toScriptSource())
 }

dataforge-workspace/build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 
 kotlin {
     sourceSets {
-        val commonMain by getting{
+        commonMain{
             dependencies {
                 api(project(":dataforge-context"))
                 api(project(":dataforge-data"))

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew.bat

@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
+if "%ERRORLEVEL%" == "0" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -54,7 +54,7 @@ goto fail
 set JAVA_HOME=%JAVA_HOME:"=%
 set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
-if exist "%JAVA_EXE%" goto init
+if exist "%JAVA_EXE%" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
@@ -64,21 +64,6 @@ echo location of your Java installation.
 
 goto fail
 
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
 :execute
 @rem Setup the command line
 
@@ -86,7 +71,7 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
 
 :end
 @rem End local scope for the variables with windows NT shell

settings.gradle.kts

@@ -5,12 +5,20 @@ pluginManagement {
         gradlePluginPortal()
         maven("https://dl.bintray.com/kotlin/kotlin-eap")
         maven("https://dl.bintray.com/kotlin/kotlinx")
-        maven("https://dl.bintray.com/mipt-npm/scientifik")
         maven("https://dl.bintray.com/mipt-npm/kscience")
         maven("https://dl.bintray.com/mipt-npm/dev")
     }
 
     val toolsVersion = "0.6.0"
+    val kotlinVersion = "1.4.0"
+
+    plugins {
+        kotlin("jvm") version kotlinVersion
+        id("scientifik.mpp") version toolsVersion
+        id("scientifik.jvm") version toolsVersion
+        id("scientifik.js") version toolsVersion
+        id("scientifik.publish") version toolsVersion
+    }
 
     resolutionStrategy {
         eachPlugin {