include/boost/corosio/error.hpp

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boost::corosio::make_error_code(boost::corosio::error) :59 120x 100.0% – 100.0%

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1		//
2		// Copyright (c) 2026 Michael Vandeberg
3		//
4		// Distributed under the Boost Software License, Version 1.0. (See accompanying
5		// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6		//
7		// Official repository: https://github.com/cppalliance/corosio
8		//
9
10		#ifndef BOOST_COROSIO_ERROR_HPP
11		#define BOOST_COROSIO_ERROR_HPP
12
13		#include <boost/corosio/detail/config.hpp>
14
15		#include <string>
16		#include <system_error>
17		#include <type_traits>
18
19		namespace boost::corosio {
20
21		/** Identifies failures corosio detects itself.
22
23		Codes the operating system reports keep their system category.
24		*/
25		enum class error
26		{
27		/// The target object already holds an open handle.
28		already_open = 1
29		};
30
31		} // namespace boost::corosio
32
33		namespace std {
34		template<>
35		struct is_error_code_enum<::boost::corosio::error> : std::true_type
36		{};
37		} // namespace std
38
39		namespace boost::corosio {
40		namespace detail {
41
42		struct BOOST_COROSIO_SYMBOL_VISIBLE error_cat_type : std::error_category
43		{
44		BOOST_COROSIO_DECL char const* name() const noexcept override;
45		BOOST_COROSIO_DECL std::string message(int) const override;
46		constexpr error_cat_type() noexcept = default;
47		};
48
49		BOOST_COROSIO_DECL extern error_cat_type error_cat;
50
51		} // namespace detail
52
53		/** Create an `std::error_code` from a corosio error value.
54
55		@param ev The error value.
56		@return An `std::error_code` in corosio's category.
57		*/
58		inline std::error_code
59	120x	make_error_code(error ev) noexcept
60		{
61	120x	return std::error_code{static_cast<int>(ev), detail::error_cat};
62		}
63
64		} // namespace boost::corosio
65
66		#endif
67