notnull

platform/core-api/src/com/intellij/openapi/project/ProjectCoreUtil.java

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2000-2015 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 com.intellij.openapi.project;
 
 import com.intellij.openapi.fileTypes.FileType;
@@ -5,6 +20,7 @@ import com.intellij.openapi.fileTypes.InternalFileType;
 import com.intellij.openapi.util.Comparing;
 import com.intellij.openapi.util.SystemInfoRt;
 import com.intellij.openapi.vfs.VirtualFile;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 /**
@@ -13,12 +29,11 @@ import org.jetbrains.annotations.Nullable;
 public class ProjectCoreUtil {
   public static final String DIRECTORY_BASED_PROJECT_DIR = ".idea";
 
-  public static boolean isProjectOrWorkspaceFile(final VirtualFile file) {
+  public static boolean isProjectOrWorkspaceFile(@NotNull VirtualFile file) {
     return isProjectOrWorkspaceFile(file, file.getFileType());
   }
 
-  public static boolean isProjectOrWorkspaceFile(final VirtualFile file,
-                                                 final @Nullable FileType fileType) {
+  public static boolean isProjectOrWorkspaceFile(@NotNull VirtualFile file, @Nullable final FileType fileType) {
     if (fileType instanceof InternalFileType) return true;
     VirtualFile parent = file.isDirectory() ? file: file.getParent();
     while (parent != null) {