Gradle: use CompileStatic for SourceSetCachedFinder

plugins/gradle/tooling-extension-impl/src/org/jetbrains/plugins/gradle/tooling/util/SourceSetCachedFinder.groovy

@@ -15,28 +15,33 @@
  */
 package org.jetbrains.plugins.gradle.tooling.util
 
+import groovy.transform.CompileStatic
 import org.gradle.api.Project
+import org.gradle.api.plugins.JavaPluginConvention
 import org.gradle.api.tasks.SourceSet
 import org.gradle.api.tasks.SourceSetContainer
+import org.gradle.api.tasks.bundling.AbstractArchiveTask
 import org.jetbrains.annotations.NotNull
 
 /**
  * @author Vladislav.Soroka
  * @since 5/19/2016
  */
+@CompileStatic
 class SourceSetCachedFinder {
-  private final myArtifactsMap = new HashMap<String, SourceSet>()
+  private final Map<String, SourceSet> myArtifactsMap = new HashMap<String, SourceSet>()
 
   @SuppressWarnings("GrUnresolvedAccess")
   SourceSetCachedFinder(@NotNull Project project) {
     def rootProject = project.rootProject
-    rootProject.subprojects.each { Project p ->
-      if (p.hasProperty("sourceSets") && (p.sourceSets instanceof SourceSetContainer)) {
-        p.sourceSets.each { SourceSet sourceSet ->
-          def jarTask = p.tasks.findByName(sourceSet.getJarTaskName())
-          def file = jarTask?.archivePath as File
-          if (file) {
-            myArtifactsMap[file.path] = sourceSet
+    for (Project p : rootProject.subprojects) {
+      getSourceSetContainer(p)?.each { SourceSet sourceSet ->
+        def task = p.tasks.findByName(sourceSet.getJarTaskName())
+        if (task instanceof AbstractArchiveTask) {
+          AbstractArchiveTask jarTask = (AbstractArchiveTask)task
+          def archivePath = jarTask?.getArchivePath()
+          if (archivePath) {
+            myArtifactsMap[archivePath.path] = sourceSet
           }
         }
       }
@@ -44,6 +49,14 @@ class SourceSetCachedFinder {
   }
 
   SourceSet findByArtifact(String artifactPath) {
-    return myArtifactsMap[artifactPath]
+    myArtifactsMap[artifactPath]
+  }
+
+  static JavaPluginConvention getJavaPluginConvention(Project p) {
+    p.convention.findPlugin(JavaPluginConvention)
+  }
+
+  static SourceSetContainer getSourceSetContainer(Project p) {
+    getJavaPluginConvention(p)?.sourceSets
   }
 }