From 732238fb13684d59eba4901ec97e95d05edd6866 Mon Sep 17 00:00:00 2001
From: Alexey Kudravtsev <cdr@intellij.com>
Date: Thu, 5 Jun 2014 18:23:51 +0400
Subject: [PATCH] performance

---
 .../codeInsight/daemon/impl/PostHighlightingPass.java      | 5 ++++-
 .../intellij/codeInsight/daemon/impl/RefCountHolder.java   | 7 ++++---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/PostHighlightingPass.java b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/PostHighlightingPass.java
index 3cd72560f13e..06b11a3d364d 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/PostHighlightingPass.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/PostHighlightingPass.java
@@ -49,6 +49,7 @@ import com.intellij.openapi.roots.ProjectRootManager;
 import com.intellij.openapi.util.Key;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.pom.PomNamedTarget;
+import com.intellij.pom.java.LanguageLevel;
 import com.intellij.profile.codeInspection.InspectionProjectProfileManager;
 import com.intellij.psi.*;
 import com.intellij.psi.codeStyle.JavaCodeStyleManager;
@@ -77,6 +78,7 @@ import java.util.*;
 public class PostHighlightingPass extends ProgressableTextEditorHighlightingPass {
   private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.daemon.impl.PostHighlightingPass");
   private static final Key<Long> LAST_POST_PASS_TIMESTAMP = Key.create("LAST_POST_PASS_TIMESTAMP");
+  private final LanguageLevel myLanguageLevel;
   private RefCountHolder myRefCountHolder;
   private final PsiFile myFile;
   @Nullable private final Editor myEditor;
@@ -109,6 +111,7 @@ public class PostHighlightingPass extends ProgressableTextEditorHighlightingPass
     myEndOffset = file.getTextLength();
 
     myCurrentEntryIndex = -1;
+    myLanguageLevel = PsiUtil.getLanguageLevel(file);
   }
 
   static boolean isUpToDate(@NotNull PsiFile file) {
@@ -509,7 +512,7 @@ public class PostHighlightingPass extends ProgressableTextEditorHighlightingPass
       //parameter is defined by functional interface
       final PsiElement declarationScope = parameter.getDeclarationScope();
       if (declarationScope instanceof PsiMethod && 
-          myRefCountHolder.isReferencedByMethodReference((PsiMethod)declarationScope)) {
+          myRefCountHolder.isReferencedByMethodReference((PsiMethod)declarationScope, myLanguageLevel)) {
         return null;
       }
       String message = JavaErrorMessages.message("parameter.is.not.used", identifier.getText());
diff --git a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/RefCountHolder.java b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/RefCountHolder.java
index 018fce54ddba..f63ea55608a2 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/RefCountHolder.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/RefCountHolder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2013 JetBrains s.r.o.
+ * Copyright 2000-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,6 +20,7 @@ import com.intellij.openapi.progress.ProgressIndicator;
 import com.intellij.openapi.util.Key;
 import com.intellij.openapi.util.TextRange;
 import com.intellij.openapi.util.UserDataHolderEx;
+import com.intellij.pom.java.LanguageLevel;
 import com.intellij.psi.*;
 import com.intellij.psi.util.PsiMatcherImpl;
 import com.intellij.psi.util.PsiMatchers;
@@ -204,8 +205,8 @@ public class RefCountHolder {
     return usedStatus == Boolean.TRUE;
   }
 
-  public boolean isReferencedByMethodReference(@NotNull PsiMethod method) {
-    if (!PsiUtil.isLanguageLevel8OrHigher(method)) return false;
+  public boolean isReferencedByMethodReference(@NotNull PsiMethod method, @NotNull LanguageLevel languageLevel) {
+    if (!languageLevel.isAtLeast(LanguageLevel.JDK_1_8)) return false;
 
     List<PsiReference> array;
     synchronized (myLocalRefsMap) {