/////////////////////////////////////////////////////////////////////////////// | |
/// \file regex_traits.hpp | |
/// Includes the C regex traits or the CPP regex traits header file depending on the | |
/// BOOST_XPRESSIVE_USE_C_TRAITS macro. | |
// | |
// Copyright 2008 Eric Niebler. Distributed under 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_REGEX_TRAITS_HPP_EAN_10_04_2005 | |
#define BOOST_XPRESSIVE_REGEX_TRAITS_HPP_EAN_10_04_2005 | |
// MS compatible compilers support #pragma once | |
#if defined(_MSC_VER) && (_MSC_VER >= 1020) | |
# pragma once | |
#endif | |
#include <boost/type_traits/is_convertible.hpp> | |
#include <boost/xpressive/detail/detail_fwd.hpp> | |
#ifdef BOOST_XPRESSIVE_USE_C_TRAITS | |
# include <boost/xpressive/traits/c_regex_traits.hpp> | |
#else | |
# include <boost/xpressive/traits/cpp_regex_traits.hpp> | |
#endif | |
namespace boost { namespace xpressive | |
{ | |
/////////////////////////////////////////////////////////////////////////////// | |
// regex_traits_version_1_tag | |
/// Tag used to denote that a traits class conforms to the version 1 traits | |
/// interface. | |
struct regex_traits_version_1_tag | |
{ | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// regex_traits_version_2_tag | |
/// Tag used to denote that a traits class conforms to the version 2 traits | |
/// interface. | |
struct regex_traits_version_2_tag | |
: regex_traits_version_1_tag | |
{ | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// regex_traits_version_1_case_fold_tag DEPRECATED use has_fold_case trait | |
/// INTERNAL ONLY | |
/// | |
struct regex_traits_version_1_case_fold_tag | |
: regex_traits_version_1_tag | |
{ | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// has_fold_case | |
/// Trait used to denote that a traits class has the fold_case member function. | |
template<typename Traits> | |
struct has_fold_case | |
: is_convertible< | |
typename Traits::version_tag * | |
, regex_traits_version_1_case_fold_tag * | |
> | |
{ | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// regex_traits | |
/// Thin wrapper around the default regex_traits implementation, either | |
/// cpp_regex_traits or c_regex_traits | |
/// | |
template<typename Char, typename Impl> | |
struct regex_traits | |
: Impl | |
{ | |
typedef typename Impl::locale_type locale_type; | |
regex_traits() | |
: Impl() | |
{ | |
} | |
explicit regex_traits(locale_type const &loc) | |
: Impl(loc) | |
{ | |
} | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// lookup_classname | |
/// INTERNAL ONLY | |
template<typename Traits, std::size_t N> | |
inline typename Traits::char_class_type | |
lookup_classname(Traits const &traits, char const (&cname)[N], bool icase) | |
{ | |
typename Traits::char_type name[N] = {0}; | |
for(std::size_t j = 0; j < N-1; ++j) | |
{ | |
name[j] = traits.widen(cname[j]); | |
} | |
return traits.lookup_classname(name, name + N - 1, icase); | |
} | |
}} | |
#endif |