c_streambuf_defs.hh

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/* c_streambuf class declaration.
   Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
   Copyright (C) 2010-2016 BUGSENG srl (http://bugseng.com)

This file is part of the Parma Polyhedra Library (PPL).

The PPL 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.

The PPL 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.

For the most up-to-date information see the Parma Polyhedra Library
site: http://bugseng.com/products/ppl/ . */

#ifndef PPL_c_streambuf_defs_hh
#define PPL_c_streambuf_defs_hh 1

#include "c_streambuf_types.hh"
#include <streambuf>
#include <cstddef>

class Parma_Polyhedra_Library::c_streambuf
  : public std::basic_streambuf<char, std::char_traits<char> > {
public:
  c_streambuf();

  virtual ~c_streambuf();

protected:
  virtual int_type underflow();

  virtual int_type uflow();

  virtual std::streamsize xsgetn(char_type* s, std::streamsize n);

  virtual int_type pbackfail(int_type c = traits_type::eof());

  virtual std::streamsize xsputn(const char_type* s, std::streamsize n);

  virtual int_type overflow(int_type c);

  virtual int sync();

private:
  typedef char char_type;

  typedef std::char_traits<char_type> traits_type;

  typedef traits_type::int_type int_type;

  int_type unget_char_buf;

  int_type next_char_buf;

  virtual size_t cb_read(char *, size_t) {
    return 0;
  }
  virtual size_t cb_write(const char *, size_t) {
    return 0;
  }
  virtual int cb_sync() {
    return 0;
  }
  virtual int cb_flush() {
    return 0;
  }
};

#include "c_streambuf_inlines.hh"

#endif // !defined(PPL_c_streambuf_defs_hh)