EPPlus/FormulaParsing/Excel/Functions/ArgumentCollectionUtil.cs

/*******************************************************************************
 * You may amend and distribute as you like, but don't remove this header!
 *
 * EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
 * See http://www.codeplex.com/EPPlus for details.
 *
 * Copyright (C) 2011  Jan Källman
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
 * If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
 *
 * All code and executables are provided "as is" with no warranty either express or implied.
 * The author accepts no liability for any damage or loss of business that this product may cause.
 *
 * Code change notes:
 *
 * Author							Change						Date
 *******************************************************************************
 * Mats Alm   		                Added		                2013-12-03
 *******************************************************************************/

using System;
using System.Collections.Generic;

namespace OfficeOpenXml.FormulaParsing.Excel.Functions;

public class ArgumentCollectionUtil {
  private readonly DoubleEnumerableArgConverter _doubleEnumerableArgConverter;
  private readonly ObjectEnumerableArgConverter _objectEnumerableArgConverter;

  public ArgumentCollectionUtil()
      : this(new(), new()) {}

  public ArgumentCollectionUtil(
      DoubleEnumerableArgConverter doubleEnumerableArgConverter,
      ObjectEnumerableArgConverter objectEnumerableArgConverter) {
    _doubleEnumerableArgConverter = doubleEnumerableArgConverter;
    _objectEnumerableArgConverter = objectEnumerableArgConverter;
  }

  public virtual IEnumerable<double> ArgsToDoubleEnumerable(
      bool ignoreHidden,
      bool ignoreErrors,
      IEnumerable<FunctionArgument> arguments,
      ParsingContext context) {
    return _doubleEnumerableArgConverter.ConvertArgs(
        ignoreHidden,
        ignoreErrors,
        arguments,
        context);
  }

  public virtual IEnumerable<object> ArgsToObjectEnumerable(
      bool ignoreHidden,
      IEnumerable<FunctionArgument> arguments,
      ParsingContext context) {
    return _objectEnumerableArgConverter.ConvertArgs(ignoreHidden, arguments, context);
  }

  public virtual double CalculateCollection(
      IEnumerable<FunctionArgument> collection,
      double result,
      Func<FunctionArgument, double, double> action) {
    foreach (var item in collection) {
      if (item.Value is IEnumerable<FunctionArgument> value) {
        result = CalculateCollection(value, result, action);
      } else {
        result = action(item, result);
      }
    }
    return result;
  }
}