org.eclipse.jdt.internal.compiler.ASTVisitor.java Source code

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Here is the source code for org.eclipse.jdt.internal.compiler.ASTVisitor.java

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/*******************************************************************************
 * Copyright (c) 2000, 2019 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler;

import org.eclipse.jdt.core.compiler.IProblem;
import org.eclipse.jdt.internal.compiler.ast.*;
import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
import org.eclipse.jdt.internal.compiler.lookup.ClassScope;
import org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope;
import org.eclipse.jdt.internal.compiler.lookup.MethodScope;

/**
 * A visitor for iterating through the parse tree.
 */
public abstract class ASTVisitor {
    public void acceptProblem(IProblem problem) {
        // do nothing by default
    }

    public void endVisit(AllocationExpression allocationExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(AND_AND_Expression and_and_Expression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(AnnotationMethodDeclaration annotationTypeDeclaration, ClassScope classScope) {
        // do nothing by default
    }

    public void endVisit(Argument argument, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Argument argument, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayAllocationExpression arrayAllocationExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayInitializer arrayInitializer, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayInitializer arrayInitializer, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayQualifiedTypeReference arrayQualifiedTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayQualifiedTypeReference arrayQualifiedTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayReference arrayReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayTypeReference arrayTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ArrayTypeReference arrayTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(AssertStatement assertStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Assignment assignment, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(BinaryExpression binaryExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Block block, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(BreakStatement breakStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(CaseStatement caseStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(CastExpression castExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(CharLiteral charLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ClassLiteralAccess classLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Clinit clinit, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(CompilationUnitDeclaration compilationUnitDeclaration, CompilationUnitScope scope) {
        // do nothing by default
    }

    public void endVisit(CompoundAssignment compoundAssignment, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ConditionalExpression conditionalExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ConstructorDeclaration constructorDeclaration, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(ContinueStatement continueStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(DoStatement doStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(DoubleLiteral doubleLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(EmptyStatement emptyStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(EqualExpression equalExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ExplicitConstructorCall explicitConstructor, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ExtendedStringLiteral extendedStringLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(FalseLiteral falseLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(FieldDeclaration fieldDeclaration, MethodScope scope) {
        // do nothing by default
    }

    public void endVisit(FieldReference fieldReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(FieldReference fieldReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(FloatLiteral floatLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ForeachStatement forStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ForStatement forStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(IfStatement ifStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ImportReference importRef, CompilationUnitScope scope) {
        // do nothing by default
    }

    public void endVisit(Initializer initializer, MethodScope scope) {
        // do nothing by default
    }

    public void endVisit(InstanceOfExpression instanceOfExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(IntLiteral intLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Javadoc javadoc, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Javadoc javadoc, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocAllocationExpression expression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocAllocationExpression expression, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocArgumentExpression expression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocArgumentExpression expression, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocArrayQualifiedTypeReference typeRef, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocArrayQualifiedTypeReference typeRef, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocArraySingleTypeReference typeRef, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocArraySingleTypeReference typeRef, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocFieldReference fieldRef, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocFieldReference fieldRef, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocImplicitTypeReference implicitTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocImplicitTypeReference implicitTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocMessageSend messageSend, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocMessageSend messageSend, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocQualifiedTypeReference typeRef, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocQualifiedTypeReference typeRef, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocReturnStatement statement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocReturnStatement statement, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocSingleNameReference argument, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocSingleNameReference argument, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocSingleTypeReference typeRef, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(JavadocSingleTypeReference typeRef, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(LabeledStatement labeledStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(LocalDeclaration localDeclaration, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(LongLiteral longLiteral, BlockScope scope) {
        // do nothing by default
    }

    /**
     * @param annotation
     * @param scope
     * @since 3.1
     */
    public void endVisit(MarkerAnnotation annotation, BlockScope scope) {
        // do nothing by default
    }

    /**
     * @param annotation
     * @param scope
     */
    public void endVisit(MarkerAnnotation annotation, ClassScope scope) {
        // do nothing by default
    }

    /**
     * @param pair
     * @param scope
     */
    public void endVisit(MemberValuePair pair, BlockScope scope) {
        // do nothing by default
    }

    /**
     * @param pair
     * @param scope
     */
    public void endVisit(MemberValuePair pair, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(MessageSend messageSend, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(MethodDeclaration methodDeclaration, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(StringLiteralConcatenation literal, BlockScope scope) {
        // do nothing by default
    }

    /**
     * @param annotation
     * @param scope
     * @since 3.1
     */
    public void endVisit(NormalAnnotation annotation, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(NormalAnnotation annotation, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(NullLiteral nullLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(OR_OR_Expression or_or_Expression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference,
            BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference,
            ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(PostfixExpression postfixExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(PrefixExpression prefixExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedAllocationExpression qualifiedAllocationExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedNameReference qualifiedNameReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedNameReference qualifiedNameReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedSuperReference qualifiedSuperReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedSuperReference qualifiedSuperReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedThisReference qualifiedThisReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedThisReference qualifiedThisReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedTypeReference qualifiedTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(QualifiedTypeReference qualifiedTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(ReturnStatement returnStatement, BlockScope scope) {
        // do nothing by default
    }

    /**
     * @param annotation
     * @param scope
     * @since 3.1
     */
    public void endVisit(SingleMemberAnnotation annotation, BlockScope scope) {
        // do nothing by default
    }

    /**
     * @param annotation
     * @param scope
     */
    public void endVisit(SingleMemberAnnotation annotation, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(SingleNameReference singleNameReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(SingleNameReference singleNameReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(SingleTypeReference singleTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(SingleTypeReference singleTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(StringLiteral stringLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(SuperReference superReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(SwitchStatement switchStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(SynchronizedStatement synchronizedStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ThisReference thisReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(ThisReference thisReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(ThrowStatement throwStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(TrueLiteral trueLiteral, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(TryStatement tryStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(TypeDeclaration localTypeDeclaration, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(TypeDeclaration memberTypeDeclaration, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(TypeDeclaration typeDeclaration, CompilationUnitScope scope) {
        // do nothing by default
    }

    public void endVisit(TypeParameter typeParameter, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(TypeParameter typeParameter, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(UnaryExpression unaryExpression, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(UnionTypeReference unionTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(UnionTypeReference unionTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(YieldStatement yieldStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(WhileStatement whileStatement, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Wildcard wildcard, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(Wildcard wildcard, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(LambdaExpression lambdaExpression, BlockScope blockScope) {
        // do nothing by default
    }

    public void endVisit(ReferenceExpression referenceExpression, BlockScope blockScope) {
        // do nothing by default   
    }

    public void endVisit(IntersectionCastTypeReference intersectionCastTypeReference, ClassScope scope) {
        // do nothing by default
    }

    public void endVisit(IntersectionCastTypeReference intersectionCastTypeReference, BlockScope scope) {
        // do nothing by default
    }

    public void endVisit(SwitchExpression switchExpression, BlockScope scope) {
        // do nothing by default
    }

    public boolean visit(AllocationExpression allocationExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(AND_AND_Expression and_and_Expression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(AnnotationMethodDeclaration annotationTypeDeclaration, ClassScope classScope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Argument argument, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Argument argument, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayAllocationExpression arrayAllocationExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayInitializer arrayInitializer, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayInitializer arrayInitializer, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayQualifiedTypeReference arrayQualifiedTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayQualifiedTypeReference arrayQualifiedTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayReference arrayReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayTypeReference arrayTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ArrayTypeReference arrayTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(AssertStatement assertStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Assignment assignment, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(BinaryExpression binaryExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Block block, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(BreakStatement breakStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(CaseStatement caseStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(CastExpression castExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(CharLiteral charLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ClassLiteralAccess classLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Clinit clinit, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ModuleDeclaration module, CompilationUnitScope scope) {
        return true;
    }

    public boolean visit(CompilationUnitDeclaration compilationUnitDeclaration, CompilationUnitScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(CompoundAssignment compoundAssignment, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ConditionalExpression conditionalExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ConstructorDeclaration constructorDeclaration, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ContinueStatement continueStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(DoStatement doStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(DoubleLiteral doubleLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(EmptyStatement emptyStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(EqualExpression equalExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ExplicitConstructorCall explicitConstructor, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ExtendedStringLiteral extendedStringLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(FalseLiteral falseLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(FieldDeclaration fieldDeclaration, MethodScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(FieldReference fieldReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(FieldReference fieldReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(FloatLiteral floatLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ForeachStatement forStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ForStatement forStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(IfStatement ifStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ImportReference importRef, CompilationUnitScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Initializer initializer, MethodScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(InstanceOfExpression instanceOfExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(IntLiteral intLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Javadoc javadoc, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Javadoc javadoc, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocAllocationExpression expression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocAllocationExpression expression, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocArgumentExpression expression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocArgumentExpression expression, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocArrayQualifiedTypeReference typeRef, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocArrayQualifiedTypeReference typeRef, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocArraySingleTypeReference typeRef, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocArraySingleTypeReference typeRef, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocFieldReference fieldRef, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocFieldReference fieldRef, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocImplicitTypeReference implicitTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocImplicitTypeReference implicitTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocMessageSend messageSend, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocMessageSend messageSend, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocQualifiedTypeReference typeRef, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocQualifiedTypeReference typeRef, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocReturnStatement statement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocReturnStatement statement, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocSingleNameReference argument, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocSingleNameReference argument, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocSingleTypeReference typeRef, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(JavadocSingleTypeReference typeRef, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(LabeledStatement labeledStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(LocalDeclaration localDeclaration, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(LongLiteral longLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    /**
     * @param annotation
     * @param scope
     * @since 3.1
     */
    public boolean visit(MarkerAnnotation annotation, BlockScope scope) {
        return true;
    }

    /**
     * @param annotation
     * @param scope
     */
    public boolean visit(MarkerAnnotation annotation, ClassScope scope) {
        return true;
    }

    /**
     * @param pair
     * @param scope
     * @since 3.1
     */
    public boolean visit(MemberValuePair pair, BlockScope scope) {
        return true;
    }

    /**
     * @param pair
     * @param scope
     */
    public boolean visit(MemberValuePair pair, ClassScope scope) {
        return true;
    }

    public boolean visit(MessageSend messageSend, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(MethodDeclaration methodDeclaration, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(StringLiteralConcatenation literal, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    /**
     * @param annotation
     * @param scope
     * @since 3.1
     */
    public boolean visit(NormalAnnotation annotation, BlockScope scope) {
        return true;
    }

    /**
     * @param annotation
     * @param scope
     */
    public boolean visit(NormalAnnotation annotation, ClassScope scope) {
        return true;
    }

    public boolean visit(NullLiteral nullLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(OR_OR_Expression or_or_Expression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference,
            BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference,
            ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ParameterizedSingleTypeReference parameterizedSingleTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(PostfixExpression postfixExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(PrefixExpression prefixExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedAllocationExpression qualifiedAllocationExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedNameReference qualifiedNameReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedNameReference qualifiedNameReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedSuperReference qualifiedSuperReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedSuperReference qualifiedSuperReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedThisReference qualifiedThisReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedThisReference qualifiedThisReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedTypeReference qualifiedTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(QualifiedTypeReference qualifiedTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ReturnStatement returnStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    /**
     * @param annotation
     * @param scope
     * @since 3.1
     */
    public boolean visit(SingleMemberAnnotation annotation, BlockScope scope) {
        return true;
    }

    /**
     * @param annotation
     * @param scope
     */
    public boolean visit(SingleMemberAnnotation annotation, ClassScope scope) {
        return true;
    }

    public boolean visit(SingleNameReference singleNameReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(SingleNameReference singleNameReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(SingleTypeReference singleTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(SingleTypeReference singleTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(StringLiteral stringLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(SuperReference superReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(SwitchStatement switchStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(SynchronizedStatement synchronizedStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ThisReference thisReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ThisReference thisReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ThrowStatement throwStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(TrueLiteral trueLiteral, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(TryStatement tryStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(TypeDeclaration localTypeDeclaration, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(TypeDeclaration memberTypeDeclaration, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(TypeDeclaration typeDeclaration, CompilationUnitScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(TypeParameter typeParameter, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(TypeParameter typeParameter, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(UnaryExpression unaryExpression, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(UnionTypeReference unionTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(UnionTypeReference unionTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(YieldStatement yieldStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(WhileStatement whileStatement, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Wildcard wildcard, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(Wildcard wildcard, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(LambdaExpression lambdaExpression, BlockScope blockScope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(ReferenceExpression referenceExpression, BlockScope blockScope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(IntersectionCastTypeReference intersectionCastTypeReference, ClassScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(IntersectionCastTypeReference intersectionCastTypeReference, BlockScope scope) {
        return true; // do nothing by default, keep traversing
    }

    public boolean visit(SwitchExpression switchExpression, BlockScope blockScope) {
        return true; // do nothing by default, keep traversing
    }
}