string_base.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD 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 General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */
 
#ifndef STRING_BASE_H
#define STRING_BASE_H
 
#include "string_type.h"
 
class StringIterator {
public:
  enum IterType : uint8_t {
    ITER_CHARACTER, 
    ITER_WORD,      
  };
 
  static const size_t END = SIZE_MAX;
 
  static std::unique_ptr<StringIterator> Create();
 
  virtual ~StringIterator() = default;
 
  virtual void SetString(std::string_view s) = 0;
 
  virtual size_t SetCurPosition(size_t pos) = 0;
 
  virtual size_t Next(IterType what = ITER_CHARACTER) = 0;
 
  virtual size_t Prev(IterType what = ITER_CHARACTER) = 0;
 
protected:
  StringIterator() {}
};
 
#endif /* STRING_BASE_H */