﻿/* 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;

namespace OfficeOpenXml.FormulaParsing.Excel.Functions;

public class FunctionArgument {
  public FunctionArgument(object val) {
    Value = val;
  }

  private ExcelCellState _excelCellState;

  public void SetExcelStateFlag(ExcelCellState state) {
    _excelCellState |= state;
  }

  public bool ExcelStateFlagIsSet(ExcelCellState state) {
    return (_excelCellState & state) != 0;
  }

  public object Value { get; private set; }

  public Type Type => Value != null ? Value.GetType() : null;

  public bool IsExcelRange => Value != null && Value is ExcelDataProvider.IRangeInfo;

  public bool ValueIsExcelError => ExcelErrorValue.Values.IsErrorValue(Value);

  public ExcelErrorValue ValueAsExcelErrorValue => ExcelErrorValue.Parse(Value.ToString());

  public ExcelDataProvider.IRangeInfo ValueAsRangeInfo => Value as ExcelDataProvider.IRangeInfo;

  public object ValueFirst {
    get {
      if (Value is ExcelDataProvider.INameInfo) {
        Value = ((ExcelDataProvider.INameInfo)Value).Value;
      }
      var v = Value as ExcelDataProvider.IRangeInfo;
      if (v == null) {
        return Value;
      }
      return v.GetValue(v.Address._fromRow, v.Address._fromCol);
    }
  }
}