From f9bbc71f84a6ef7ad9aa5605893497b05b76ddfa Mon Sep 17 00:00:00 2001
From: "Pavel V. Talanov" <talanov.pavel@gmail.com>
Date: Tue, 13 Jan 2015 20:51:54 +0300
Subject: [PATCH] CoreJavaFileManager: avoid constructing unneeded list

---
 .../src/com/intellij/core/CoreJavaFileManager.java        | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/java/java-psi-impl/src/com/intellij/core/CoreJavaFileManager.java b/java/java-psi-impl/src/com/intellij/core/CoreJavaFileManager.java
index ffd04e83b4ae..a7d671870934 100644
--- a/java/java-psi-impl/src/com/intellij/core/CoreJavaFileManager.java
+++ b/java/java-psi-impl/src/com/intellij/core/CoreJavaFileManager.java
@@ -160,8 +160,12 @@ public class CoreJavaFileManager implements JavaFileManager {
   }
 
   @Nullable
-  private static PsiClass findClassByTopLevelClass(@NotNull String classNameWithInnerClassesDotSeparated, @NotNull PsiClass topLevelClass) {
-    Iterator<String> segments = StringUtil.split(classNameWithInnerClassesDotSeparated, ".").iterator();
+  private static PsiClass findClassByTopLevelClass(@NotNull String className, @NotNull PsiClass topLevelClass) {
+    if (className.indexOf('.') < 0) {
+      return className.equals(topLevelClass.getName()) ? topLevelClass : null;
+    }
+
+    Iterator<String> segments = StringUtil.split(className, ".").iterator();
     if (!segments.hasNext() || !segments.next().equals(topLevelClass.getName())) {
       return null;
     }