From 0ee293d05d604f2c3fc930d7a7031eef09939f2a Mon Sep 17 00:00:00 2001
From: Alexey Kudravtsev <cdr@intellij.com>
Date: Tue, 6 Nov 2018 20:15:52 +0300
Subject: [PATCH] optimization: faster hashCode()

---
 .../com/intellij/openapi/editor/impl/view/LineLayout.java | 5 +++++
 .../com/intellij/util/io/CompressedAppendableFile.java    | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/platform/platform-impl/src/com/intellij/openapi/editor/impl/view/LineLayout.java b/platform/platform-impl/src/com/intellij/openapi/editor/impl/view/LineLayout.java
index 0f08e38caa01..da478ab876fe 100644
--- a/platform/platform-impl/src/com/intellij/openapi/editor/impl/view/LineLayout.java
+++ b/platform/platform-impl/src/com/intellij/openapi/editor/impl/view/LineLayout.java
@@ -595,6 +595,11 @@ abstract class LineLayout {
       this.endOffset = endOffset;
     }
 
+    @Override
+    public int hashCode() {
+      return startOffset * 31 + endOffset;
+    }
+
     private void ensureLayout(@NotNull EditorView view, BidiRun run, int line) {
       if (isReal()) {
         view.getTextLayoutCache().onChunkAccess(this);
diff --git a/platform/util/src/com/intellij/util/io/CompressedAppendableFile.java b/platform/util/src/com/intellij/util/io/CompressedAppendableFile.java
index 2255d1e31951..ae5efcb554fd 100644
--- a/platform/util/src/com/intellij/util/io/CompressedAppendableFile.java
+++ b/platform/util/src/com/intellij/util/io/CompressedAppendableFile.java
@@ -60,6 +60,9 @@ public class CompressedAppendableFile {
 
   static final String INCOMPLETE_CHUNK_LENGTH_FILE_EXTENSION = ".s";
 
+  private static int ourFilesCount;
+  private final int myCount = ourFilesCount++;
+
   public CompressedAppendableFile(File file) {
     this(file, 32768);
   }
@@ -590,4 +593,9 @@ public class CompressedAppendableFile {
       return buf[0] & 0xFF;
     }
   }
+
+  @Override
+  public int hashCode() {
+    return myCount;
+  }
 }
\ No newline at end of file