include/boost/capy/error.hpp
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boost::capy::make_error_code(boost::capy::error)
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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2025 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // Copyright (c) 2026 Michael Vandeberg | ||
| 4 | // | ||
| 5 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 6 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 7 | // | ||
| 8 | // Official repository: https://github.com/cppalliance/capy | ||
| 9 | // | ||
| 10 | |||
| 11 | #ifndef BOOST_CAPY_ERROR_HPP | ||
| 12 | #define BOOST_CAPY_ERROR_HPP | ||
| 13 | |||
| 14 | #include <boost/capy/detail/config.hpp> | ||
| 15 | #include <system_error> | ||
| 16 | |||
| 17 | namespace boost { | ||
| 18 | namespace capy { | ||
| 19 | |||
| 20 | /** Error codes for capy I/O operations. | ||
| 21 | |||
| 22 | These codes are produced by capy algorithms and I/O operations. | ||
| 23 | |||
| 24 | @warning Callers must never compare received `error_code` values | ||
| 25 | directly against this enum. Always compare against the portable | ||
| 26 | @ref cond error conditions instead. These enum values are | ||
| 27 | implementation details subject to change. | ||
| 28 | |||
| 29 | @see cond | ||
| 30 | */ | ||
| 31 | enum class error | ||
| 32 | { | ||
| 33 | /// End-of-stream reached. Compare with `cond::eof`. | ||
| 34 | eof = 1, | ||
| 35 | |||
| 36 | /// Operation was cancelled. Compare with `cond::canceled`. | ||
| 37 | canceled, | ||
| 38 | |||
| 39 | /// Internal test assertion failed. | ||
| 40 | test_failure, | ||
| 41 | |||
| 42 | /// Peer closed connection without proper TLS shutdown. | ||
| 43 | /// Compare with `cond::stream_truncated`. | ||
| 44 | stream_truncated, | ||
| 45 | |||
| 46 | /// Requested item was not found. Compare with `cond::not_found`. | ||
| 47 | not_found, | ||
| 48 | |||
| 49 | /// Operation timed out. Compare with `cond::timeout`. | ||
| 50 | timeout | ||
| 51 | }; | ||
| 52 | |||
| 53 | } // capy | ||
| 54 | } // boost | ||
| 55 | |||
| 56 | namespace std { | ||
| 57 | template<> | ||
| 58 | struct is_error_code_enum< | ||
| 59 | ::boost::capy::error> | ||
| 60 | : std::true_type {}; | ||
| 61 | } // std | ||
| 62 | |||
| 63 | namespace boost { | ||
| 64 | namespace capy { | ||
| 65 | |||
| 66 | namespace detail { | ||
| 67 | |||
| 68 | struct BOOST_CAPY_SYMBOL_VISIBLE | ||
| 69 | error_cat_type | ||
| 70 | : std::error_category | ||
| 71 | { | ||
| 72 | BOOST_CAPY_DECL const char* name( | ||
| 73 | ) const noexcept override; | ||
| 74 | BOOST_CAPY_DECL std::string message( | ||
| 75 | int) const override; | ||
| 76 | BOOST_CAPY_DECL std::error_condition default_error_condition( | ||
| 77 | int) const noexcept override; | ||
| 78 | constexpr error_cat_type() noexcept = default; | ||
| 79 | }; | ||
| 80 | |||
| 81 | BOOST_CAPY_DECL extern error_cat_type error_cat; | ||
| 82 | |||
| 83 | } // detail | ||
| 84 | |||
| 85 | /// Create an error_code from an error value. | ||
| 86 | inline | ||
| 87 | std::error_code | ||
| 88 | 2004x | make_error_code( | |
| 89 | error ev) noexcept | ||
| 90 | { | ||
| 91 | 2004x | return std::error_code{ | |
| 92 | static_cast<std::underlying_type< | ||
| 93 | error>::type>(ev), | ||
| 94 | 2004x | detail::error_cat}; | |
| 95 | } | ||
| 96 | |||
| 97 | } // capy | ||
| 98 | } // boost | ||
| 99 | |||
| 100 | #endif | ||
| 101 |