url/impl/error.hpp

0001 //
0002 // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
0003 //
0004 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0005 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 //
0007 // Official repository: https://github.com/boostorg/url
0008 //
0009
0010 #ifndef BOOST_URL_IMPL_ERROR_HPP
0011 #define BOOST_URL_IMPL_ERROR_HPP
0012
0013 #include <type_traits>
0014
0015 namespace boost {
0016
0017 //-----------------------------------------------
0018 namespace system {
0019 template<>
0020 struct is_error_code_enum<::boost::urls::error>
0021 {
0022     static bool const value = true;
0023 };
0024 } // system
0025 //-----------------------------------------------
0026
0027 namespace urls {
0028
0029 namespace detail {
0030
0031 struct BOOST_SYMBOL_VISIBLE
0032     error_cat_type
0033     : system::error_category
0034 {
0035     BOOST_URL_DECL
0036     const char* name(
0037         ) const noexcept override;
0038
0039     BOOST_URL_DECL
0040     std::string message(
0041         int) const override;
0042
0043     BOOST_URL_DECL
0044     char const* message(
0045         int, char*, std::size_t
0046             ) const noexcept override;
0047
0048     BOOST_URL_DECL
0049     system::error_condition
0050         default_error_condition(
0051             int code) const noexcept override;
0052
0053     BOOST_SYSTEM_CONSTEXPR error_cat_type() noexcept
0054         : error_category(0xbc15399d7a4ce829)
0055     {
0056     }
0057 };
0058
0059 BOOST_URL_DECL extern
0060     error_cat_type error_cat;
0061
0062 } // detail
0063
0064 inline
0065 BOOST_SYSTEM_CONSTEXPR
0066 system::error_code
0067 make_error_code(
0068     error ev) noexcept
0069 {
0070     return system::error_code{
0071         static_cast<std::underlying_type<
0072             error>::type>(ev),
0073         detail::error_cat};
0074 }
0075
0076 } // urls
0077 } // boost
0078
0079 #endif