public UstNode VisitClassDeclaration(JavaParser.ClassDeclarationContext context)
        {
            var typeTypeToken = new TypeTypeLiteral(TypeType.Class,
                                                    context.GetChild <ITerminalNode>(0).Symbol.GetTextSpan(), FileNode);

            var id = (IdToken)Visit(context.IDENTIFIER());

            EntityDeclaration[] typeMembers = context.classBody().classBodyDeclaration()
                                              .Select(dec => Visit(dec) as EntityDeclaration)
                                              .Where(dec => dec != null).ToArray();

            var result = new TypeDeclaration(typeTypeToken, id, typeMembers, context.GetTextSpan(), FileNode);

            return(result);
        }
        public Ust VisitClassDeclaration(JavaParser.ClassDeclarationContext context)
        {
            var typeTypeToken = new TypeTypeLiteral(TypeType.Class,
                                                    context.GetChild <ITerminalNode>(0).Symbol.GetTextSpan());

            var id = (IdToken)Visit(context.IDENTIFIER());

            EntityDeclaration[] typeMembers = context.classBody().classBodyDeclaration()
                                              .Select(dec => Visit(dec) as EntityDeclaration)
                                              .Where(dec => dec != null).ToArray();

            var baseTypes = new List <TypeToken>();

            if (context.typeType() != null)
            {
                baseTypes.Add((TypeToken)Visit(context.typeType()));
            }
            if (context.typeList() != null)
            {
                baseTypes.AddRange(context.typeList().typeType().Select(t => (TypeToken)Visit(t)));
            }

            var result = new TypeDeclaration(typeTypeToken, id, baseTypes, typeMembers, context.GetTextSpan());

            return(result);
        }