From c3d4836a118d9b2a24d1eb8e2e824b6881b64f3b Mon Sep 17 00:00:00 2001
From: Alexander Nozik <altavir@gmail.com>
Date: Sun, 26 Jul 2020 10:23:51 +0300
Subject: [PATCH] Default error for Provider

---
 build.gradle.kts                                              | 4 ++--
 .../src/commonMain/kotlin/hep/dataforge/provider/Provider.kt  | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/build.gradle.kts b/build.gradle.kts
index c3f71631..93d3c926 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,12 +1,12 @@
 plugins {
-    val toolsVersion = "0.5.1"
+    val toolsVersion = "0.5.2"
     id("scientifik.mpp") version toolsVersion apply false
     id("scientifik.jvm") version toolsVersion apply false
     id("scientifik.publish") version toolsVersion apply false
     id("org.jetbrains.dokka") version "0.10.1"
 }
 
-val dataforgeVersion by extra("0.1.8")
+val dataforgeVersion by extra("0.1.9-dev")
 
 val bintrayRepo by extra("dataforge")
 val githubProject by extra("dataforge-core")
diff --git a/dataforge-context/src/commonMain/kotlin/hep/dataforge/provider/Provider.kt b/dataforge-context/src/commonMain/kotlin/hep/dataforge/provider/Provider.kt
index b1d769e2..72484ea9 100644
--- a/dataforge-context/src/commonMain/kotlin/hep/dataforge/provider/Provider.kt
+++ b/dataforge-context/src/commonMain/kotlin/hep/dataforge/provider/Provider.kt
@@ -43,7 +43,8 @@ interface Provider {
     /**
      * A map of direct children for specific target
      */
-    fun provideTop(target: String): Map<Name, Any>
+    fun provideTop(target: String): Map<Name, Any> =
+        throw IllegalArgumentException("Target $target is not supported for $this")
 }
 
 fun Provider.provide(path: Path, targetOverride: String? = null): Any? {