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131 lines
3.7 KiB
131 lines
3.7 KiB
4 years ago
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/*
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*
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* Copyright (c) 2003
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* John Maddock
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*
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* Use, modification and distribution are subject to the
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* Boost Software License, Version 1.0. (See accompanying file
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* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*
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*/
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/*
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* LOCATION: see http://www.boost.org for most recent version.
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* FILE regex_traits.hpp
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* VERSION see <boost/version.hpp>
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* DESCRIPTION: Declares regular expression traits classes.
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*/
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#ifndef BOOST_REGEX_TRAITS_HPP_INCLUDED
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#define BOOST_REGEX_TRAITS_HPP_INCLUDED
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#include <boost/regex/config.hpp>
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#include <boost/regex/v5/regex_workaround.hpp>
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#include <boost/regex/v5/syntax_type.hpp>
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#include <boost/regex/v5/error_type.hpp>
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#include <boost/regex/v5/regex_traits_defaults.hpp>
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#include <boost/regex/v5/cpp_regex_traits.hpp>
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#include <boost/regex/v5/c_regex_traits.hpp>
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#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)
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# include <boost/regex/v5/w32_regex_traits.hpp>
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#endif
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#include <boost/regex_fwd.hpp>
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namespace boost{
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template <class charT, class implementationT >
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struct regex_traits : public implementationT
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{
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regex_traits() : implementationT() {}
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};
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//
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// class regex_traits_wrapper.
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// this is what our implementation will actually store;
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// it provides default implementations of the "optional"
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// interfaces that we support, in addition to the
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// required "standard" ones:
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//
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namespace BOOST_REGEX_DETAIL_NS{
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template <class T>
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struct has_boost_extensions_tag
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{
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template <class U>
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static double checker(U*, typename U::boost_extensions_tag* = nullptr);
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static char checker(...);
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static T* get();
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static const bool value = sizeof(checker(get())) > 1;
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};
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template <class BaseT>
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struct default_wrapper : public BaseT
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{
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typedef typename BaseT::char_type char_type;
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std::string error_string(::boost::regex_constants::error_type e)const
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{
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return ::boost::BOOST_REGEX_DETAIL_NS::get_default_error_string(e);
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}
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::boost::regex_constants::syntax_type syntax_type(char_type c)const
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{
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return (char_type(c & 0x7f) == c) ? get_default_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::syntax_char;
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}
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::boost::regex_constants::escape_syntax_type escape_syntax_type(char_type c)const
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{
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return (char_type(c & 0x7f) == c) ? get_default_escape_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::escape_type_identity;
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}
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std::intmax_t toi(const char_type*& p1, const char_type* p2, int radix)const
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{
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return ::boost::BOOST_REGEX_DETAIL_NS::global_toi(p1, p2, radix, *this);
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}
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char_type translate(char_type c, bool icase)const
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{
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return (icase ? this->translate_nocase(c) : this->translate(c));
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}
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char_type translate(char_type c)const
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{
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return BaseT::translate(c);
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}
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char_type tolower(char_type c)const
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{
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return ::boost::BOOST_REGEX_DETAIL_NS::global_lower(c);
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}
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char_type toupper(char_type c)const
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{
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return ::boost::BOOST_REGEX_DETAIL_NS::global_upper(c);
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}
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};
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template <class BaseT, bool has_extensions>
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struct compute_wrapper_base
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{
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typedef BaseT type;
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};
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template <class BaseT>
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struct compute_wrapper_base<BaseT, false>
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{
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typedef default_wrapper<BaseT> type;
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};
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} // namespace BOOST_REGEX_DETAIL_NS
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template <class BaseT>
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struct regex_traits_wrapper
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: public ::boost::BOOST_REGEX_DETAIL_NS::compute_wrapper_base<
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BaseT,
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::boost::BOOST_REGEX_DETAIL_NS::has_boost_extensions_tag<BaseT>::value
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>::type
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{
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regex_traits_wrapper(){}
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private:
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regex_traits_wrapper(const regex_traits_wrapper&);
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regex_traits_wrapper& operator=(const regex_traits_wrapper&);
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};
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} // namespace boost
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#endif // include
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