EPPlus/FormulaParsing/Excel/Functions/RefAndLookup/LookupNavigatorFactory.cs

using System;

namespace OfficeOpenXml.FormulaParsing.Excel.Functions.RefAndLookup;

public static class LookupNavigatorFactory {
  public static LookupNavigator Create(
      LookupDirection direction,
      LookupArguments args,
      ParsingContext parsingContext) {
    if (args.ArgumentDataType == LookupArguments.LookupArgumentDataType.ExcelRange) {
      return new ExcelLookupNavigator(direction, args, parsingContext);
    }
    if (args.ArgumentDataType == LookupArguments.LookupArgumentDataType.DataArray) {
      return new ArrayLookupNavigator(direction, args, parsingContext);
    }
    throw new NotSupportedException("Invalid argument datatype");
  }
}