/*=============================================================================
    Copyright (c) 2001-2003 Joel de Guzman
    Copyright (c) 2001-2003 Daniel Nuffer
    http://spirit.sourceforge.net/

    Use, modification and distribution is subject to the Boost Software
    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
    http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef BOOST_SPIRIT_BASIC_CHSET_HPP
#define BOOST_SPIRIT_BASIC_CHSET_HPP

///////////////////////////////////////////////////////////////////////////////
#include <bitset>
#include <boost/spirit/utility/impl/chset/range_run.hpp>

namespace boost { namespace spirit {

    ///////////////////////////////////////////////////////////////////////////
    //
    //  basic_chset: basic character set implementation using range_run
    //
    ///////////////////////////////////////////////////////////////////////////
    template <typename CharT>
    class basic_chset
    {
    public:
                            basic_chset();
                            basic_chset(basic_chset const& arg_);

        bool                test(CharT v) const;
        void                set(CharT from, CharT to);
        void                set(CharT c);
        void                clear(CharT from, CharT to);
        void                clear(CharT c);
        void                clear();

        void                inverse();
        void                swap(basic_chset& x);

        basic_chset&        operator|=(basic_chset const& x);
        basic_chset&        operator&=(basic_chset const& x);
        basic_chset&        operator-=(basic_chset const& x);
        basic_chset&        operator^=(basic_chset const& x);

        private: utility::impl::range_run<CharT> rr;
    };

    #if (CHAR_BIT == 8)

    ///////////////////////////////////////////////////////////////////////////
    //
    //  basic_chset: specializations for 8 bit chars using std::bitset
    //
    ///////////////////////////////////////////////////////////////////////////
    template <typename CharT>
    class basic_chset_8bit {

    public:
                            basic_chset_8bit();
                            basic_chset_8bit(basic_chset_8bit const& arg_);

        bool                test(CharT v) const;
        void                set(CharT from, CharT to);
        void                set(CharT c);
        void                clear(CharT from, CharT to);
        void                clear(CharT c);
        void                clear();

        void                inverse();
        void                swap(basic_chset_8bit& x);

        basic_chset_8bit&   operator|=(basic_chset_8bit const& x);
        basic_chset_8bit&   operator&=(basic_chset_8bit const& x);
        basic_chset_8bit&   operator-=(basic_chset_8bit const& x);
        basic_chset_8bit&   operator^=(basic_chset_8bit const& x);

        private: std::bitset<256> bset;
    };

    /////////////////////////////////
    template <>
    class basic_chset<char>
    : public basic_chset_8bit<char> {};

    /////////////////////////////////
    template <>
    class basic_chset<signed char>
    : public basic_chset_8bit<signed char> {};

    /////////////////////////////////
    template <>
    class basic_chset<unsigned char>
    : public basic_chset_8bit<unsigned char> {};

#endif

}} // namespace boost::spirit

#endif

#include <boost/spirit/utility/impl/chset/basic_chset.ipp>