From e6665d77c174147d3b230df31d29fa1a20525b21 Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Mon, 6 May 2013 18:40:05 +0200
Subject: [PATCH] an assertion for uncoupled before/after vfs events

---
 .../com/intellij/openapi/fileTypes/impl/IgnoredFileCache.java  | 3 +++
 1 file changed, 3 insertions(+)

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 e3f15e0bac27..d0ed91c37b67 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
@@ -48,6 +48,9 @@ class IgnoredFileCache {
       @Override
       public void before(@NotNull List<? extends VFileEvent> events) {
         // during VFS event processing the system may be in inconsistent state, don't cache it
+        if (!myEnableCache) {
+          LOG.error("VFS before event received without a matching after: " + events);
+        }
         myEnableCache = false;
         clearCacheForChangedFiles(events);
       }