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- /*=============================================================================
- 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_XPRESSIVE_SPIRIT_BASIC_CHSET_HPP_EAN_10_04_2005
- #define BOOST_XPRESSIVE_SPIRIT_BASIC_CHSET_HPP_EAN_10_04_2005
- ///////////////////////////////////////////////////////////////////////////////
- #include <bitset>
- #include <boost/mpl/bool.hpp>
- #include <boost/xpressive/detail/utility/chset/range_run.ipp>
- namespace boost { namespace xpressive { namespace detail
- {
- ///////////////////////////////////////////////////////////////////////////
- //
- // basic_chset: basic character set implementation using range_run
- //
- ///////////////////////////////////////////////////////////////////////////
- template<typename Char>
- struct basic_chset
- {
- basic_chset();
- basic_chset(basic_chset const &arg);
- bool empty() const;
- void set(Char from, Char to);
- template<typename Traits>
- void set(Char from, Char to, Traits const &tr);
- void set(Char c);
- template<typename Traits>
- void set(Char c, Traits const &tr);
- void clear(Char from, Char to);
- template<typename Traits>
- void clear(Char from, Char to, Traits const &tr);
- void clear(Char c);
- template<typename Traits>
- void clear(Char c, Traits const &tr);
- void clear();
- template<typename Traits>
- bool test(Char v, Traits const &tr, mpl::false_) const; // case-sensitive
- template<typename Traits>
- bool test(Char v, Traits const &tr, mpl::true_) const; // case-insensitive
- 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:
- range_run<Char> rr_;
- };
- #if(CHAR_BIT == 8)
- ///////////////////////////////////////////////////////////////////////////
- //
- // basic_chset: specializations for 8 bit chars using std::bitset
- //
- ///////////////////////////////////////////////////////////////////////////
- template<typename Char>
- struct basic_chset_8bit
- {
- basic_chset_8bit();
- basic_chset_8bit(basic_chset_8bit const &arg);
- bool empty() const;
- void set(Char from, Char to);
- template<typename Traits>
- void set(Char from, Char to, Traits const &tr);
- void set(Char c);
- template<typename Traits>
- void set(Char c, Traits const &tr);
- void clear(Char from, Char to);
- template<typename Traits>
- void clear(Char from, Char to, Traits const &tr);
- void clear(Char c);
- template<typename Traits>
- void clear(Char c, Traits const &tr);
- void clear();
- template<typename Traits>
- bool test(Char v, Traits const &tr, mpl::false_) const; // case-sensitive
- template<typename Traits>
- bool test(Char v, Traits const &tr, mpl::true_) const; // case-insensitive
- 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);
- std::bitset<256> const &base() const;
- private:
- std::bitset<256> bset_; // BUGBUG range-checking slows this down
- };
- /////////////////////////////////
- template<>
- struct basic_chset<char>
- : basic_chset_8bit<char>
- {
- };
- /////////////////////////////////
- template<>
- struct basic_chset<signed char>
- : basic_chset_8bit<signed char>
- {
- };
- /////////////////////////////////
- template<>
- struct basic_chset<unsigned char>
- : basic_chset_8bit<unsigned char>
- {
- };
- #endif
- ///////////////////////////////////////////////////////////////////////////////
- // is_narrow_char
- template<typename Char>
- struct is_narrow_char
- : mpl::false_
- {};
- template<>
- struct is_narrow_char<char>
- : mpl::true_
- {};
- template<>
- struct is_narrow_char<signed char>
- : mpl::true_
- {};
- template<>
- struct is_narrow_char<unsigned char>
- : mpl::true_
- {};
- ///////////////////////////////////////////////////////////////////////////////
- // helpers
- template<typename Char, typename Traits>
- void set_char(basic_chset<Char> &chset, Char ch, Traits const &tr, bool icase);
- template<typename Char, typename Traits>
- void set_range(basic_chset<Char> &chset, Char from, Char to, Traits const &tr, bool icase);
- template<typename Char, typename Traits>
- void set_class(basic_chset<Char> &chset, typename Traits::char_class_type char_class, bool no, Traits const &tr);
- }}} // namespace boost::xpressive::detail
- #endif
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