﻿/* 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.Collections.Generic;
using OfficeOpenXml.FormulaParsing.ExpressionGraph;
using OfficeOpenXml.FormulaParsing.Utilities;

namespace OfficeOpenXml.FormulaParsing.Excel.Functions;

public class ArgumentParsers {
  private static readonly object _syncRoot = new();
  private readonly Dictionary<DataType, ArgumentParser> _parsers = new();
  private readonly ArgumentParserFactory _parserFactory;

  public ArgumentParsers()
      : this(new()) {}

  public ArgumentParsers(ArgumentParserFactory factory) {
    Require.That(factory).Named("argumentParserfactory").IsNotNull();
    _parserFactory = factory;
  }

  public ArgumentParser GetParser(DataType dataType) {
    if (!_parsers.ContainsKey(dataType)) {
      lock (_syncRoot) {
        if (!_parsers.ContainsKey(dataType)) {
          _parsers.Add(dataType, _parserFactory.CreateArgumentParser(dataType));
        }
      }
    }
    return _parsers[dataType];
  }
}