From 16628671ca85a477b16f6cbc5a070dc4709d9b07 Mon Sep 17 00:00:00 2001
From: Roman Shevchenko <roman.shevchenko@jetbrains.com>
Date: Fri, 9 Feb 2018 11:01:40 +0100
Subject: [PATCH] [platform] ignored file cache performance optimization

+ possible fix for DEXP-338886
---
 .../fileTypes/impl/IgnoredFileCache.java      | 32 ++++++-------------
 1 file changed, 10 insertions(+), 22 deletions(-)

diff --git a/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/IgnoredFileCache.java b/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/IgnoredFileCache.java
index d22f0251e9c1..91ed53833865 100644
--- a/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/IgnoredFileCache.java
+++ b/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/IgnoredFileCache.java
@@ -1,18 +1,4 @@
-/*
- * Copyright 2000-2014 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.
- */
+// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.openapi.fileTypes.impl;
 
 import com.intellij.openapi.application.ApplicationManager;
@@ -54,12 +40,14 @@ final class IgnoredFileCache {
       }
 
       private void clearCacheForChangedFiles(@NotNull List<? extends VFileEvent> events) {
-        for (final VFileEvent event : events) {
-          VirtualFile file = event.getFile();
-          if (file instanceof NewVirtualFile && event instanceof VFilePropertyChangeEvent) {
-            int id = ((NewVirtualFile)file).getId();
-            if (id >= 0) {
-              myNonIgnoredIds.clear(id);
+        for (VFileEvent event : events) {
+          if (event instanceof VFilePropertyChangeEvent) {
+            VirtualFile file = event.getFile();
+            if (file instanceof NewVirtualFile) {
+              int id = ((NewVirtualFile)file).getId();
+              if (id >= 0) {
+                myNonIgnoredIds.clear(id);
+              }
             }
           }
         }
@@ -83,4 +71,4 @@ final class IgnoredFileCache {
     }
     return result;
   }
-}
+}
\ No newline at end of file