/*=============================================================================
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Copyright (c) 2001-2003 Joel de Guzman
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Copyright (c) 2001-2003 Daniel Nuffer
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http://spirit.sourceforge.net/
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef BOOST_XPRESSIVE_SPIRIT_BASIC_CHSET_HPP_EAN_10_04_2005
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#define BOOST_XPRESSIVE_SPIRIT_BASIC_CHSET_HPP_EAN_10_04_2005
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///////////////////////////////////////////////////////////////////////////////
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#include <bitset>
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#include <boost/mpl/bool.hpp>
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#include <boost/xpressive/detail/utility/chset/range_run.ipp>
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namespace boost { namespace xpressive { namespace detail
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{
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///////////////////////////////////////////////////////////////////////////
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//
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// basic_chset: basic character set implementation using range_run
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//
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///////////////////////////////////////////////////////////////////////////
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template<typename Char>
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struct basic_chset
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{
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basic_chset();
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basic_chset(basic_chset const &arg);
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bool empty() const;
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void set(Char from, Char to);
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template<typename Traits>
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void set(Char from, Char to, Traits const &tr);
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void set(Char c);
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template<typename Traits>
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void set(Char c, Traits const &tr);
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void clear(Char from, Char to);
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template<typename Traits>
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void clear(Char from, Char to, Traits const &tr);
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void clear(Char c);
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template<typename Traits>
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void clear(Char c, Traits const &tr);
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void clear();
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template<typename Traits>
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bool test(Char v, Traits const &tr, mpl::false_) const; // case-sensitive
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template<typename Traits>
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bool test(Char v, Traits const &tr, mpl::true_) const; // case-insensitive
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void inverse();
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void swap(basic_chset& x);
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basic_chset &operator |=(basic_chset const &x);
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basic_chset &operator &=(basic_chset const &x);
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basic_chset &operator -=(basic_chset const &x);
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basic_chset &operator ^=(basic_chset const &x);
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private:
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range_run<Char> rr_;
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};
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#if(CHAR_BIT == 8)
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///////////////////////////////////////////////////////////////////////////
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//
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// basic_chset: specializations for 8 bit chars using std::bitset
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//
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///////////////////////////////////////////////////////////////////////////
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template<typename Char>
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struct basic_chset_8bit
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{
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basic_chset_8bit();
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basic_chset_8bit(basic_chset_8bit const &arg);
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bool empty() const;
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void set(Char from, Char to);
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template<typename Traits>
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void set(Char from, Char to, Traits const &tr);
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void set(Char c);
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template<typename Traits>
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void set(Char c, Traits const &tr);
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void clear(Char from, Char to);
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template<typename Traits>
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void clear(Char from, Char to, Traits const &tr);
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void clear(Char c);
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template<typename Traits>
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void clear(Char c, Traits const &tr);
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void clear();
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template<typename Traits>
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bool test(Char v, Traits const &tr, mpl::false_) const; // case-sensitive
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template<typename Traits>
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bool test(Char v, Traits const &tr, mpl::true_) const; // case-insensitive
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void inverse();
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void swap(basic_chset_8bit& x);
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basic_chset_8bit &operator |=(basic_chset_8bit const &x);
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basic_chset_8bit &operator &=(basic_chset_8bit const &x);
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basic_chset_8bit &operator -=(basic_chset_8bit const &x);
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basic_chset_8bit &operator ^=(basic_chset_8bit const &x);
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std::bitset<256> const &base() const;
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private:
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std::bitset<256> bset_; // BUGBUG range-checking slows this down
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};
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/////////////////////////////////
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template<>
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struct basic_chset<char>
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: basic_chset_8bit<char>
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{
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};
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/////////////////////////////////
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template<>
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struct basic_chset<signed char>
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: basic_chset_8bit<signed char>
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{
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};
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/////////////////////////////////
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template<>
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struct basic_chset<unsigned char>
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: basic_chset_8bit<unsigned char>
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{
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};
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#endif
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///////////////////////////////////////////////////////////////////////////////
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// is_narrow_char
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template<typename Char>
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struct is_narrow_char
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: mpl::false_
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{};
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template<>
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struct is_narrow_char<char>
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: mpl::true_
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{};
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template<>
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struct is_narrow_char<signed char>
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: mpl::true_
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{};
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template<>
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struct is_narrow_char<unsigned char>
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: mpl::true_
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{};
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///////////////////////////////////////////////////////////////////////////////
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// helpers
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template<typename Char, typename Traits>
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void set_char(basic_chset<Char> &chset, Char ch, Traits const &tr, bool icase);
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template<typename Char, typename Traits>
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void set_range(basic_chset<Char> &chset, Char from, Char to, Traits const &tr, bool icase);
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template<typename Char, typename Traits>
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void set_class(basic_chset<Char> &chset, typename Traits::char_class_type char_class, bool no, Traits const &tr);
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}}} // namespace boost::xpressive::detail
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#endif
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