Minor: Convert PackageIndexUtil to Kotlin

annotations/com/intellij/psi/stubs/annotations.xml

@@ -10,7 +10,10 @@
       name='com.intellij.psi.stubs.AbstractStubIndex java.util.Collection<Psi> get(Key, com.intellij.openapi.project.Project, com.intellij.psi.search.GlobalSearchScope) 2'>
     <annotation name='org.jetbrains.annotations.NotNull'/>
   </item>
-  <item
+    <item name='com.intellij.psi.stubs.StubIndex com.intellij.psi.stubs.StubIndex getInstance()'>
+        <annotation name='org.jetbrains.annotations.NotNull'/>
+    </item>
+    <item
       name='com.intellij.psi.stubs.StubIndex java.util.Collection&lt;Psi&gt; get(com.intellij.psi.stubs.StubIndexKey&lt;Key,Psi&gt;, Key, com.intellij.openapi.project.Project, com.intellij.psi.search.GlobalSearchScope)'>
     <annotation name='org.jetbrains.annotations.NotNull'/>
   </item>

idea/idea-analysis/src/org/jetbrains/jet/plugin/stubindex/PackageIndexUtil.java

@@ -1,80 +0,0 @@
-/*
- * Copyright 2010-2014 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.jet.plugin.stubindex;
-
-import com.intellij.openapi.project.Project;
-import com.intellij.openapi.util.Ref;
-import com.intellij.psi.search.GlobalSearchScope;
-import com.intellij.psi.stubs.StubIndex;
-import com.intellij.psi.stubs.StubIndexKey;
-import com.intellij.util.Processor;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.jet.lang.psi.JetFile;
-import org.jetbrains.jet.lang.resolve.name.FqName;
-
-import java.util.Collection;
-
-public final class PackageIndexUtil {
-    @NotNull
-    public static Collection<FqName> getSubPackageFqNames(
-            @NotNull FqName packageFqName,
-            @NotNull GlobalSearchScope scope,
-            @NotNull Project project
-    ) {
-        return SubpackagesIndexService.OBJECT$.getInstance(project).getSubpackages(packageFqName, scope);
-    }
-
-    @NotNull
-    public static Collection<JetFile> findFilesWithExactPackage(
-            @NotNull FqName packageFqName,
-            @NotNull GlobalSearchScope searchScope,
-            @NotNull Project project
-    ) {
-        return JetExactPackagesIndex.getInstance().get(packageFqName.asString(), project, searchScope);
-    }
-
-    public static boolean packageExists(
-            @NotNull FqName packageFqName,
-            @NotNull GlobalSearchScope searchScope,
-            @NotNull Project project
-    ) {
-        return containsAny(packageFqName, searchScope, project, JetExactPackagesIndex.getInstance().getKey())
-                || SubpackagesIndexService.OBJECT$.getInstance(project).hasSubpackages(packageFqName, searchScope);
-    }
-
-    public static boolean containsAny(
-            @NotNull FqName packageFqName,
-            @NotNull GlobalSearchScope searchScope,
-            @NotNull Project project,
-            @NotNull StubIndexKey<String, JetFile> key
-    ) {
-        final Ref<Boolean> result = new Ref<Boolean>(false);
-        StubIndex.getInstance().processElements(
-                key, packageFqName.asString(), project, searchScope, JetFile.class,
-                new Processor<JetFile>() {
-                    @Override
-                    public boolean process(JetFile file) {
-                        result.set(true);
-                        return false;
-                    }
-                });
-        return result.get();
-    }
-
-    private PackageIndexUtil() {
-    }
-}

idea/idea-analysis/src/org/jetbrains/jet/plugin/stubindex/PackageIndexUtil.kt

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2010-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.jet.plugin.stubindex
+
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.util.Ref
+import com.intellij.psi.search.GlobalSearchScope
+import com.intellij.psi.stubs.StubIndex
+import com.intellij.psi.stubs.StubIndexKey
+import com.intellij.util.Processor
+import org.jetbrains.jet.lang.psi.JetFile
+import org.jetbrains.jet.lang.resolve.name.FqName
+import kotlin.platform.platformStatic
+
+public object PackageIndexUtil {
+    platformStatic public fun getSubPackageFqNames(
+            packageFqName: FqName,
+            scope: GlobalSearchScope,
+            project: Project
+    ): Collection<FqName> {
+        return SubpackagesIndexService.getInstance(project).getSubpackages(packageFqName, scope)
+    }
+
+    platformStatic public fun findFilesWithExactPackage(
+            packageFqName: FqName,
+            searchScope: GlobalSearchScope,
+            project: Project
+    ): Collection<JetFile> {
+        return JetExactPackagesIndex.getInstance().get(packageFqName.asString(), project, searchScope)
+    }
+
+    platformStatic public fun packageExists(
+            packageFqName: FqName,
+            searchScope: GlobalSearchScope,
+            project: Project
+    ): Boolean {
+        return containsAny(packageFqName, searchScope, project, JetExactPackagesIndex.getInstance().getKey()) ||
+               SubpackagesIndexService.getInstance(project).hasSubpackages(packageFqName, searchScope)
+    }
+
+    platformStatic public fun containsAny(
+            packageFqName: FqName,
+            searchScope: GlobalSearchScope,
+            project: Project,
+            key: StubIndexKey<String, JetFile>
+    ): Boolean {
+        var result = false
+        StubIndex.getInstance().processElements<String, JetFile>(key, packageFqName.asString(), project, searchScope, javaClass<JetFile>()) {
+            result = true
+            false
+        }
+        return result
+    }
+}