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172 lines
4.8 KiB
172 lines
4.8 KiB
/*============================================================================= |
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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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