make extensions final/non-public

src/org/intellij/grammar/BnfASTFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar;
@@ -14,7 +14,7 @@
 /**
  * @author gregsh
  */
-public class BnfASTFactory extends ASTFactory {
+final class BnfASTFactory extends ASTFactory {
 
   @Override
   public @Nullable CompositeElement createComposite(@NotNull IElementType type) {

src/org/intellij/grammar/BnfBraceMatcher.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar;
 
@@ -14,7 +14,7 @@
 /**
  * @author gregsh
  */
-public class BnfBraceMatcher implements PairedBraceMatcher {
+public final class BnfBraceMatcher implements PairedBraceMatcher {
 
   private static final BracePair[] PAIRS = new BracePair[]{
     new BracePair(BnfTypes.BNF_LEFT_PAREN, BnfTypes.BNF_RIGHT_PAREN, false),

src/org/intellij/grammar/BnfCommenter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar;
 
@@ -10,7 +10,7 @@
 /**
  * @author gregsh
  */
-public class BnfCommenter implements CodeDocumentationAwareCommenter {
+final class BnfCommenter implements CodeDocumentationAwareCommenter {
   @Override
   public String getLineCommentPrefix() {
     return "//";

src/org/intellij/grammar/BnfCompletionContributor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar;
@@ -43,9 +43,9 @@
 /**
  * @author gregsh
  */
-public class BnfCompletionContributor extends CompletionContributor {
+final class BnfCompletionContributor extends CompletionContributor {
 
-  public BnfCompletionContributor() {
+  BnfCompletionContributor() {
     PsiElementPattern.Capture<PsiElement> placePattern =
       psiElement()
         .inFile(StandardPatterns.instanceOf(BnfFile.class))

src/org/intellij/grammar/BnfDescriptionProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar;
 
@@ -24,7 +24,7 @@
  * @author gregory
  *         Date: 17.07.11 18:46
  */
-public class BnfDescriptionProvider implements ElementDescriptionProvider {
+final class BnfDescriptionProvider implements ElementDescriptionProvider {
   @Override
   public String getElementDescription(@NotNull PsiElement psiElement, @NotNull ElementDescriptionLocation location) {
     if (location == UsageViewNodeTextLocation.INSTANCE && psiElement instanceof BnfComposite) {

src/org/intellij/grammar/BnfDocumentationProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar;
@@ -30,7 +30,7 @@
 /**
  * @author gregsh
  */
-public class BnfDocumentationProvider implements DocumentationProvider {
+final class BnfDocumentationProvider implements DocumentationProvider {
 
   @Override
   public @Nullable String getQuickNavigateInfo(PsiElement element, PsiElement originalElement) {

src/org/intellij/grammar/BnfFileType.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar;
 
@@ -14,11 +14,11 @@
  * Date: 13.07.11
  * Time: 22:46
  */
-public class BnfFileType extends LanguageFileType {
+public final class BnfFileType extends LanguageFileType {
 
   public static final BnfFileType INSTANCE = new BnfFileType();
 
-  protected BnfFileType() {
+  private BnfFileType() {
     super(BnfLanguage.INSTANCE);
   }
 

src/org/intellij/grammar/BnfFindUsagesProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar;
 
@@ -17,7 +17,7 @@
 /**
  * @author gregsh
  */
-public class BnfFindUsagesProvider implements FindUsagesProvider {
+final class BnfFindUsagesProvider implements FindUsagesProvider {
   @Override
   public WordsScanner getWordsScanner() {
     return null;

src/org/intellij/grammar/BnfFoldingBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar;
@@ -19,7 +19,7 @@
 /**
  * @author gregsh
  */
-public class BnfFoldingBuilder extends CustomFoldingBuilder {
+final class BnfFoldingBuilder extends CustomFoldingBuilder {
 
   @Override
   protected void buildLanguageFoldRegions(@NotNull List<FoldingDescriptor> result,

src/org/intellij/grammar/BnfStructureViewFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar;
@@ -29,7 +29,7 @@
 /**
  * @author gregsh
  */
-public class BnfStructureViewFactory implements PsiStructureViewFactory {
+final class BnfStructureViewFactory implements PsiStructureViewFactory {
   @Override
   public StructureViewBuilder getStructureViewBuilder(@NotNull PsiFile psiFile) {
     return new TreeBasedStructureViewBuilder() {

src/org/intellij/grammar/diagram/BnfDiagramProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.diagram;
@@ -44,8 +44,8 @@
 /**
  * @author gregsh
  */
-public class BnfDiagramProvider extends DiagramProvider<BnfRule> {
-  public static final String ID = "GRAMMAR";
+final class BnfDiagramProvider extends DiagramProvider<BnfRule> {
+  private static final String ID = "GRAMMAR";
 
   private record Item(BnfRule rule, RuleGraphHelper.Cardinality cardinality) {
   }
@@ -164,7 +164,7 @@ public BnfRule resolveElementByFQN(@NotNull String s, @NotNull Project project)
   private final DiagramExtras<BnfRule> myExtras = new DiagramExtras<>();
   private RuleGraphHelper myGraphHelper;
 
-  public BnfDiagramProvider() {
+  BnfDiagramProvider() {
     myElementManager.setUmlProvider(this);
   }
 

src/org/intellij/grammar/editor/BnfAnnotator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar.editor;
 
@@ -28,7 +28,7 @@
 /**
  * @author gregsh
  */
-public class BnfAnnotator implements Annotator, DumbAware {
+final class BnfAnnotator implements Annotator, DumbAware {
   @Override
   public void annotate(@NotNull PsiElement psiElement, @NotNull AnnotationHolder annotationHolder) {
     PsiElement parent = psiElement.getParent();

src/org/intellij/grammar/editor/BnfColorSettingsPage.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.editor;
@@ -23,7 +23,7 @@
 /**
  * @author gregsh
  */
-public class BnfColorSettingsPage implements ColorSettingsPage {
+final class BnfColorSettingsPage implements ColorSettingsPage {
   private static final AttributesDescriptor[] ATTRS;
 
   static {

src/org/intellij/grammar/editor/BnfExpressionMarkerAnnotator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar.editor;
 
@@ -12,7 +12,7 @@
 /**
  * @author gregsh
  */
-public class BnfExpressionMarkerAnnotator implements Annotator {
+final class BnfExpressionMarkerAnnotator implements Annotator {
   @Override
   public void annotate(@NotNull PsiElement psiElement, @NotNull AnnotationHolder annotationHolder) {
     if (!(psiElement instanceof BnfRule)) return;

src/org/intellij/grammar/editor/BnfMoveLeftRightHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar.editor;
 
@@ -11,7 +11,7 @@
 import java.util.Collections;
 import java.util.List;
 
-public class BnfMoveLeftRightHandler extends MoveElementLeftRightHandler {
+final class BnfMoveLeftRightHandler extends MoveElementLeftRightHandler {
 
   @Override
   public PsiElement @NotNull [] getMovableSubElements(@NotNull PsiElement element) {

src/org/intellij/grammar/editor/BnfPinMarkerAnnotator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.editor;
@@ -28,7 +28,7 @@
 /**
  * @author gregsh
  */
-public class BnfPinMarkerAnnotator implements Annotator, DumbAware {
+final class BnfPinMarkerAnnotator implements Annotator, DumbAware {
   @Override
   public void annotate(@NotNull PsiElement psiElement, @NotNull AnnotationHolder annotationHolder) {
     if (!(psiElement instanceof BnfRule)) return;

src/org/intellij/grammar/editor/BnfQuoteHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.editor;
@@ -11,8 +11,8 @@
 /**
  * @author gregsh
  */
-public class BnfQuoteHandler extends SimpleTokenSetQuoteHandler {
-  public BnfQuoteHandler() {
+final class BnfQuoteHandler extends SimpleTokenSetQuoteHandler {
+  BnfQuoteHandler() {
     super(BnfTypes.BNF_STRING, TokenType.BAD_CHARACTER);
   }
 }

src/org/intellij/grammar/editor/BnfRecursionLineMarkerProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.editor;
@@ -25,7 +25,7 @@
 /**
  * @author gregsh
  */
-public class BnfRecursionLineMarkerProvider implements LineMarkerProvider {
+final class BnfRecursionLineMarkerProvider implements LineMarkerProvider {
   @Override
   public @Nullable LineMarkerInfo<?> getLineMarkerInfo(@NotNull PsiElement element) {
     return null;

src/org/intellij/grammar/editor/BnfRuleLineMarkerProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.editor;
@@ -32,7 +32,7 @@
 /**
  * @author gregsh
  */
-public class BnfRuleLineMarkerProvider extends RelatedItemLineMarkerProvider {
+final class BnfRuleLineMarkerProvider extends RelatedItemLineMarkerProvider {
 
   @Override
   public void collectNavigationMarkers(@NotNull List<? extends PsiElement> elements,

src/org/intellij/grammar/editor/BnfSpellCheckingStrategy.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.editor;
@@ -12,7 +12,7 @@
 /**
  * @author gregsh
  */
-public class BnfSpellCheckingStrategy extends SpellcheckingStrategy {
+final class BnfSpellCheckingStrategy extends SpellcheckingStrategy {
   @Override
   public @NotNull Tokenizer<?> getTokenizer(PsiElement element) {
     return super.getTokenizer(element);

src/org/intellij/grammar/editor/BnfSyntaxHighlighterFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package org.intellij.grammar.editor;
 
@@ -15,7 +15,7 @@
  * Date: 14.07.11
  * Time: 13:25
  */
-public class BnfSyntaxHighlighterFactory extends SyntaxHighlighterFactory {
+final class BnfSyntaxHighlighterFactory extends SyntaxHighlighterFactory {
   @Override
   public @NotNull SyntaxHighlighter getSyntaxHighlighter(Project project, VirtualFile virtualFile) {
     return new BnfSyntaxHighlighter();

src/org/intellij/grammar/editor/BnfWordSelectioner.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.editor;
@@ -18,7 +18,7 @@
 /**
  * @author gregsh
  */
-public class BnfWordSelectioner extends BraceMatcherBasedSelectioner{
+final class BnfWordSelectioner extends BraceMatcherBasedSelectioner{
   @Override
   public boolean canSelect(@NotNull PsiElement e) {
     return e instanceof BnfComposite ||

src/org/intellij/grammar/inspection/BnfDuplicateRuleInspection.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+ * Copyright 2011-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 
 package org.intellij.grammar.inspection;
@@ -24,7 +24,7 @@
  *
  * @author Vadim Romansky
  */
-public class BnfDuplicateRuleInspection extends LocalInspectionTool {
+final class BnfDuplicateRuleInspection extends LocalInspectionTool {
 
   @Override
   public ProblemDescriptor[] checkFile(@NotNull PsiFile file, @NotNull InspectionManager manager, boolean isOnTheFly) {