minor API update

build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 
 allprojects {
     group = "space.kscience"
-    version = "0.6.0-dev-9"
+    version = "0.6.0-dev-10"
 }
 
 subprojects {

dataforge-data/src/commonMain/kotlin/space/kscience/dataforge/data/DataTree.kt

@@ -6,6 +6,7 @@ import space.kscience.dataforge.names.*
 import kotlin.collections.component1
 import kotlin.collections.component2
 import kotlin.reflect.KType
+import kotlin.reflect.typeOf
 
 public sealed class DataTreeItem<out T : Any> {
 
@@ -63,6 +64,12 @@ public interface DataTree<out T : Any> : DataSet<T> {
          * A name token used to designate tree node meta
          */
         public val META_ITEM_NAME_TOKEN: NameToken = NameToken("@meta")
+
+        public inline fun <reified T : Any> empty(meta: Meta = Meta.EMPTY): DataTree<T> = object : DataTree<T> {
+            override val items: Map<NameToken, DataTreeItem<T>> get() = emptyMap()
+            override val dataType: KType get() = typeOf<T>()
+            override val meta: Meta get() = meta
+        }
     }
 }
 

dataforge-io/src/commonMain/kotlin/space/kscience/dataforge/io/IOPlugin.kt

@@ -68,6 +68,8 @@ public class IOPlugin(meta: Meta) : AbstractPlugin(meta) {
 
         override val type: KClass<out IOPlugin> = IOPlugin::class
         override fun build(context: Context, meta: Meta): IOPlugin = IOPlugin(meta)
+
+        public val WORK_DIRECTORY_KEY: Name = Name.of("io", "workDirectory")
     }
 }
 

dataforge-io/src/jvmMain/kotlin/space/kscience/dataforge/io/workDirectory.kt

@@ -0,0 +1,28 @@
+package space.kscience.dataforge.io
+
+import space.kscience.dataforge.context.ContextBuilder
+import space.kscience.dataforge.meta.get
+import space.kscience.dataforge.meta.set
+import space.kscience.dataforge.meta.string
+import java.nio.file.Path
+import kotlin.io.path.Path
+
+
+public val IOPlugin.workDirectory: Path
+    get() {
+        val workDirectoryPath = meta[IOPlugin.WORK_DIRECTORY_KEY].string
+            ?: context.properties[IOPlugin.WORK_DIRECTORY_KEY].string
+            ?: ".dataforge"
+
+        return Path(workDirectoryPath)
+    }
+
+public fun ContextBuilder.workDirectory(path: String) {
+    properties {
+        set(IOPlugin.WORK_DIRECTORY_KEY, path)
+    }
+}
+
+public fun ContextBuilder.workDirectory(path: Path){
+    workDirectory(path.toAbsolutePath().toString())
+}

dataforge-workspace/build.gradle.kts

@@ -3,6 +3,10 @@ plugins {
     id("ru.mipt.npm.gradle.native")
 }
 
+kscience{
+    useCoroutines()
+}
+
 kotlin {
     sourceSets {
         commonMain{

gradle.properties

@@ -5,4 +5,4 @@ kotlin.code.style=official
 kotlin.mpp.stability.nowarn=true
 #kotlin.incremental.js.ir=true
 
-toolsVersion=0.11.5-kotlin-1.6.21
+toolsVersion=0.11.7-kotlin-1.7.0