////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2000-2022 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave 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, either version 3 of the License, or
// (at your option) any later version.
//
// Octave 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 Octave; see the file COPYING.  If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////

#if ! defined (octave_comment_list_h)
#define octave_comment_list_h 1

#include "octave-config.h"

#include <string>

#include "base-list.h"

namespace octave
{
  extern std::string get_comment_text (void);

  extern char * get_comment_text_c_str (void);

  extern void save_comment_text (const std::string& text);

  class
  comment_elt
  {
  public:

    enum comment_type
    {
      unknown,
      block,
      full_line,
      end_of_line,
      doc_string,
      copyright
    };

    comment_elt (const std::string& s = "", comment_type t = unknown)
      : m_text (s), m_type (t) { }

    comment_elt (const comment_elt& oc)
      : m_text (oc.m_text), m_type (oc.m_type) { }

    comment_elt& operator = (const comment_elt& oc)
    {
      if (this != &oc)
        {
          m_text = oc.m_text;
          m_type = oc.m_type;
        }

      return *this;
    }

    std::string text (void) const { return m_text; }

    comment_type type (void) const { return m_type; }

    bool is_block (void) const { return m_type == block; }
    bool is_full_line (void) const { return m_type == full_line; }
    bool is_end_of_line (void) const { return m_type == end_of_line; }
    bool is_doc_string (void) const { return m_type == doc_string; }
    bool is_copyright (void) const { return m_type == copyright; }

    ~comment_elt (void) = default;

  private:

    // The text of the comment.
    std::string m_text;

    // The type of comment.
    comment_type m_type;
  };

  class
  comment_list : public base_list<comment_elt>
  {
  public:

    comment_list (void) { }

    void append (const comment_elt& elt)
    { base_list<comment_elt>::append (elt); }

    void append (const std::string& s,
                 comment_elt::comment_type t = comment_elt::unknown)
    { append (comment_elt (s, t)); }

    comment_list * dup (void) const;
  };
}

#endif
