From 391ba2057cfe5ed3f82f56a4c8bbf3469b926345 Mon Sep 17 00:00:00 2001
From: Rustam Vishnyakov <rustam.vishnyakov@jetbrains.com>
Date: Mon, 24 Nov 2014 17:29:44 +0300
Subject: [PATCH] Performance fix: compare file and document text length
 instead of entire text

---
 .../intellij/psi/formatter/FormattingDocumentModelImpl.java  | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/platform/lang-impl/src/com/intellij/psi/formatter/FormattingDocumentModelImpl.java b/platform/lang-impl/src/com/intellij/psi/formatter/FormattingDocumentModelImpl.java
index 0dad3d0270b4..581516c5cc5e 100644
--- a/platform/lang-impl/src/com/intellij/psi/formatter/FormattingDocumentModelImpl.java
+++ b/platform/lang-impl/src/com/intellij/psi/formatter/FormattingDocumentModelImpl.java
@@ -64,8 +64,9 @@ public class FormattingDocumentModelImpl implements FormattingDocumentModel {
       if (PsiDocumentManager.getInstance(file.getProject()).isUncommited(document)) {
         LOG.error("Document is uncommitted");
       }
-      if (!file.textMatches(document.getImmutableCharSequence())) {
-        LOG.error("Document and psi file texts should be equal: file " + file);
+      if (file.getTextLength() != document.getTextLength()) {
+        LOG.error("Document and psi file texts should be equal: " +
+                  file + " file length = " + file.getTextLength() + ", document length = " + document.getTextLength());
       }
       return new FormattingDocumentModelImpl(document, file);
     }