| /* |
| * |
| * Copyright (c) 2003 |
| * John Maddock |
| * |
| * Use, modification and distribution are 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) |
| * |
| */ |
| |
| /* |
| * LOCATION: see http://www.boost.org for most recent version. |
| * FILE regex_traits.hpp |
| * VERSION see <boost/version.hpp> |
| * DESCRIPTION: Declares regular expression traits classes. |
| */ |
| |
| #ifndef BOOST_REGEX_TRAITS_HPP_INCLUDED |
| #define BOOST_REGEX_TRAITS_HPP_INCLUDED |
| |
| #include <boost/regex/config.hpp> |
| #include <boost/regex/v5/regex_workaround.hpp> |
| #include <boost/regex/v5/syntax_type.hpp> |
| #include <boost/regex/v5/error_type.hpp> |
| #include <boost/regex/v5/regex_traits_defaults.hpp> |
| #include <boost/regex/v5/cpp_regex_traits.hpp> |
| #include <boost/regex/v5/c_regex_traits.hpp> |
| #if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32) |
| # include <boost/regex/v5/w32_regex_traits.hpp> |
| #endif |
| #include <boost/regex_fwd.hpp> |
| |
| namespace boost{ |
| |
| template <class charT, class implementationT > |
| struct regex_traits : public implementationT |
| { |
| regex_traits() : implementationT() {} |
| }; |
| |
| // |
| // class regex_traits_wrapper. |
| // this is what our implementation will actually store; |
| // it provides default implementations of the "optional" |
| // interfaces that we support, in addition to the |
| // required "standard" ones: |
| // |
| namespace BOOST_REGEX_DETAIL_NS{ |
| |
| template <class T> |
| struct has_boost_extensions_tag |
| { |
| template <class U> |
| static double checker(U*, typename U::boost_extensions_tag* = nullptr); |
| static char checker(...); |
| static T* get(); |
| |
| static const bool value = sizeof(checker(get())) > 1; |
| }; |
| |
| |
| template <class BaseT> |
| struct default_wrapper : public BaseT |
| { |
| typedef typename BaseT::char_type char_type; |
| std::string error_string(::boost::regex_constants::error_type e)const |
| { |
| return ::boost::BOOST_REGEX_DETAIL_NS::get_default_error_string(e); |
| } |
| ::boost::regex_constants::syntax_type syntax_type(char_type c)const |
| { |
| return (char_type(c & 0x7f) == c) ? get_default_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::syntax_char; |
| } |
| ::boost::regex_constants::escape_syntax_type escape_syntax_type(char_type c)const |
| { |
| return (char_type(c & 0x7f) == c) ? get_default_escape_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::escape_type_identity; |
| } |
| std::intmax_t toi(const char_type*& p1, const char_type* p2, int radix)const |
| { |
| return ::boost::BOOST_REGEX_DETAIL_NS::global_toi(p1, p2, radix, *this); |
| } |
| char_type translate(char_type c, bool icase)const |
| { |
| return (icase ? this->translate_nocase(c) : this->translate(c)); |
| } |
| char_type translate(char_type c)const |
| { |
| return BaseT::translate(c); |
| } |
| char_type tolower(char_type c)const |
| { |
| return ::boost::BOOST_REGEX_DETAIL_NS::global_lower(c); |
| } |
| char_type toupper(char_type c)const |
| { |
| return ::boost::BOOST_REGEX_DETAIL_NS::global_upper(c); |
| } |
| }; |
| |
| template <class BaseT, bool has_extensions> |
| struct compute_wrapper_base |
| { |
| typedef BaseT type; |
| }; |
| template <class BaseT> |
| struct compute_wrapper_base<BaseT, false> |
| { |
| typedef default_wrapper<BaseT> type; |
| }; |
| |
| } // namespace BOOST_REGEX_DETAIL_NS |
| |
| template <class BaseT> |
| struct regex_traits_wrapper |
| : public ::boost::BOOST_REGEX_DETAIL_NS::compute_wrapper_base< |
| BaseT, |
| ::boost::BOOST_REGEX_DETAIL_NS::has_boost_extensions_tag<BaseT>::value |
| >::type |
| { |
| regex_traits_wrapper(){} |
| private: |
| regex_traits_wrapper(const regex_traits_wrapper&); |
| regex_traits_wrapper& operator=(const regex_traits_wrapper&); |
| }; |
| |
| } // namespace boost |
| |
| #endif // include |
| |