[java] fixes soft keyword highlighting in source and .class files (ID…

…EA-164939)

java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/JavaSoftKeywordHighlighting.kt

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2000-2016 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.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.codeInsight.daemon.impl
+
+import com.intellij.codeHighlighting.TextEditorHighlightingPass
+import com.intellij.codeHighlighting.TextEditorHighlightingPassFactory
+import com.intellij.codeHighlighting.TextEditorHighlightingPassRegistrar
+import com.intellij.lang.java.lexer.JavaLexer
+import com.intellij.openapi.components.AbstractProjectComponent
+import com.intellij.openapi.editor.Document
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.progress.ProgressIndicator
+import com.intellij.openapi.project.Project
+import com.intellij.pom.java.LanguageLevel
+import com.intellij.psi.JavaRecursiveElementVisitor
+import com.intellij.psi.PsiFile
+import com.intellij.psi.PsiJavaFile
+import com.intellij.psi.PsiKeyword
+
+class JavaSoftKeywordHighlightingPassFactory(project: Project, registrar: TextEditorHighlightingPassRegistrar) :
+  AbstractProjectComponent(project), TextEditorHighlightingPassFactory {
+
+  init {
+    registrar.registerTextEditorHighlightingPass(this, null, null, false, -1)
+  }
+
+  override fun createHighlightingPass(file: PsiFile, editor: Editor): TextEditorHighlightingPass? =
+    if (file is PsiJavaFile && file.languageLevel.isAtLeast(LanguageLevel.JDK_1_9)) JavaSoftKeywordHighlightingPass(file, editor.document)
+    else null
+}
+
+private class JavaSoftKeywordHighlightingPass(private val file: PsiJavaFile, document: Document) :
+  TextEditorHighlightingPass(file.project, document) {
+
+  private val results = mutableListOf<HighlightInfo>()
+
+  override fun doCollectInformation(progress: ProgressIndicator) {
+    file.accept(JavaSoftKeywordHighlightingVisitor(results, file.languageLevel))
+  }
+
+  override fun doApplyInformationToEditor() {
+    if (results.isNotEmpty()) {
+      UpdateHighlightersUtil.setHighlightersToEditor(myProject, myDocument!!, 0, file.textLength, results, colorsScheme, id)
+    }
+  }
+}
+
+private class JavaSoftKeywordHighlightingVisitor(private val results: MutableList<HighlightInfo>, private val level: LanguageLevel) :
+  JavaRecursiveElementVisitor() {
+
+  override fun visitKeyword(keyword: PsiKeyword) {
+    if (JavaLexer.isSoftKeyword(keyword.text, level)) {
+      val info = HighlightInfo.newHighlightInfo(JavaHighlightInfoTypes.JAVA_KEYWORD).range(keyword).create()
+      if (info != null) {
+        results += info
+      }
+    }
+  }
+}

java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightVisitorImpl.java

@@ -22,7 +22,6 @@
 import com.intellij.codeInsight.daemon.impl.quickfix.QuickFixAction;
 import com.intellij.codeInsight.intention.QuickFixFactory;
 import com.intellij.lang.injection.InjectedLanguageManager;
-import com.intellij.lang.java.lexer.JavaLexer;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.editor.Document;
 import com.intellij.openapi.editor.colors.TextAttributesScheme;
@@ -761,11 +760,6 @@ public void visitInstanceOfExpression(PsiInstanceOfExpression expression) {
   @Override
   public void visitKeyword(PsiKeyword keyword) {
     super.visitKeyword(keyword);
-
-    if (JavaLexer.isSoftKeyword(keyword.getText(), myLanguageLevel)) {
-      myHolder.add(HighlightInfo.newHighlightInfo(JavaHighlightInfoTypes.JAVA_KEYWORD).range(keyword).create());
-    }
-
     PsiElement parent = keyword.getParent();
     String text = keyword.getText();
     if (parent instanceof PsiModifierList) {

resources/src/META-INF/IdeaPlugin.xml

@@ -71,6 +71,11 @@
     <component>
       <implementation-class>com.intellij.execution.scratch.JavaScratchCompilationSupport</implementation-class>
     </component>
+
+    <component>
+      <implementation-class>com.intellij.codeInsight.daemon.impl.JavaSoftKeywordHighlightingPassFactory</implementation-class>
+      <skipForDefaultProject/>
+    </component>
     <component>
       <implementation-class>com.intellij.codeInsight.hints.ParameterHintsPassFactory</implementation-class>
       <skipForDefaultProject/>