From 8d6d4f975847065c9f79e9dd3dc9c7193c256ff8 Mon Sep 17 00:00:00 2001
From: Sergey Patrikeev <Sergey.Patrikeev@jetbrains.com>
Date: Thu, 22 Nov 2018 16:02:23 +0300
Subject: [PATCH] Fix possible division by zero exception.

---
 .../service/project/data/ExternalAnnotationsDataService.kt | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/plugins/gradle/java/src/service/project/data/ExternalAnnotationsDataService.kt b/plugins/gradle/java/src/service/project/data/ExternalAnnotationsDataService.kt
index bc22787d57ea..d03417f99ad5 100644
--- a/plugins/gradle/java/src/service/project/data/ExternalAnnotationsDataService.kt
+++ b/plugins/gradle/java/src/service/project/data/ExternalAnnotationsDataService.kt
@@ -29,6 +29,9 @@ class ExternalAnnotationsDataService: AbstractProjectDataService<LibraryData, Li
     if (!Registry.`is`("external.system.import.resolve.annotations")) {
       return
     }
+    if (imported.isEmpty()) {
+      return
+    }
 
     projectData?.apply {
       val importRepositories =
@@ -44,7 +47,7 @@ class ExternalAnnotationsDataService: AbstractProjectDataService<LibraryData, Li
     }
 
     val resolver = ExternalAnnotationsArtifactsResolver.EP_NAME.extensionList.firstOrNull() ?: return
-    val totalSize = imported.size.toDouble()
+    val totalSize = imported.size
 
     runBackgroundableTask("Resolving external annotations", project) { indicator ->
       indicator.isIndeterminate = false
@@ -52,7 +55,6 @@ class ExternalAnnotationsDataService: AbstractProjectDataService<LibraryData, Li
         if (indicator.isCanceled) {
           return@runBackgroundableTask
         }
-        indicator.fraction = (index.toDouble() + 1) / totalSize
         val libraryData = dataNode.data
         val libraryName = libraryData.internalName
         val library = modelsProvider.getLibraryByName(libraryName)
@@ -61,6 +63,7 @@ class ExternalAnnotationsDataService: AbstractProjectDataService<LibraryData, Li
           val mavenId = "${libraryData.groupId}:${libraryData.artifactId}:${libraryData.version}"
           resolver.resolve(project, library, mavenId)
         }
+        indicator.fraction = (index + 1) / totalSize.toDouble()
       }
     }
   }