From a3fda205edb989a123767cdbf82edd393f74e40e Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Tue, 29 Jul 2014 11:37:54 +0200
Subject: [PATCH] ContainerUtil.filter: optimize for empty collections

---
 .../util/src/com/intellij/util/containers/ContainerUtil.java     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/platform/util/src/com/intellij/util/containers/ContainerUtil.java b/platform/util/src/com/intellij/util/containers/ContainerUtil.java
index 6052df2b701e..171cfababfa9 100644
--- a/platform/util/src/com/intellij/util/containers/ContainerUtil.java
+++ b/platform/util/src/com/intellij/util/containers/ContainerUtil.java
@@ -828,6 +828,7 @@ public class ContainerUtil extends ContainerUtilRt {
 
   @NotNull
   public static <T> List<T> findAll(@NotNull Collection<? extends T> collection, @NotNull Condition<? super T> condition) {
+    if (collection.isEmpty()) return emptyList();
     final List<T> result = new SmartList<T>();
     for (final T t : collection) {
       if (condition.value(t)) {