// Copyright (C) 1999,2000 Bruce Guenter <bruceg@em.ca>

//

// This program 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 2 of the License, or

// (at your option) any later version.

//

// This program 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 this program; if not, write to the Free Software

// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef MYSTRING__JOIN__H__

#define MYSTRING__JOIN__H__

class mystringjoin

{

private:

  const mystringjoin* prev;

  mystringrep* rep;

  const char* str;

  mystringjoin();

public:

  mystringjoin(const mystringjoin& j)

    : prev(j.prev), rep(j.rep), str(j.str)

    {

      rep->attach();

    }

  mystringjoin(const mystring& s)

    : prev(0), rep(s.rep), str(s.rep->buf)

    {

      rep->attach();

    }

  mystringjoin(const char* s)

    : prev(0), rep(0), str(s)

    {

    }

  mystringjoin(const mystringjoin& p, const mystring& s)

    : prev(&p), rep(s.rep), str(s.rep->buf)

    {

      rep->attach();

    }

  mystringjoin(const mystringjoin& p, const char* s)

    : prev(&p), rep(0), str(s)

    {

    }

  ~mystringjoin()

    {

      if(rep) rep->detach();

    }

  mystringrep* traverse() const;

};

inline mystring::mystring(const mystringjoin& j)

  : rep(j.traverse())

{

  rep->attach();

}

inline mystringjoin operator+(const mystringjoin& a, const mystring& b)

{

  return mystringjoin(a, b);

}

inline mystringjoin operator+(const mystringjoin& a, const char* b)

{

  return mystringjoin(a, b);

}

#endif