EPPlus/FormulaParsing/LexicalAnalysis/TokenSeparatorHandlers/TokenSeparatorHandler.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       		        2015-12-28
 *******************************************************************************/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace OfficeOpenXml.FormulaParsing.LexicalAnalysis.TokenSeparatorHandlers {
  /// <summary>
  /// This class provides access to <see cref="SeparatorHandler"/>s - classes that exposes functionatlity
  /// needed when parsing strings to tokens.
  /// </summary>
  public static class TokenSeparatorHandler {
    private static SeparatorHandler[] _handlers = new SeparatorHandler[] {
      new StringHandler(),
      new BracketHandler(),
      new SheetnameHandler(),
      new MultipleCharSeparatorHandler(),
    };

    /// <summary>
    /// Handles a tokenseparator.
    /// </summary>
    /// <param name="c"></param>
    /// <param name="tokenSeparator"></param>
    /// <param name="context"></param>
    /// <param name="tokenIndexProvider"></param>
    /// <returns>Returns true if the tokenseparator was handled.</returns>
    public static bool Handle(
        char c,
        Token tokenSeparator,
        TokenizerContext context,
        ITokenIndexProvider tokenIndexProvider) {
      foreach (var handler in _handlers) {
        if (handler.Handle(c, tokenSeparator, context, tokenIndexProvider)) {
          return true;
        }
      }
      return false;
    }
  }
}