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77 lines
2.9 KiB
77 lines
2.9 KiB
// Copyright (c) 2018-2022, The Monero Project
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "error.h"
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#include <string>
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namespace
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{
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struct category final : std::error_category
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{
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virtual const char* name() const noexcept override final
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{
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return "common_category()";
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}
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virtual std::string message(int value) const override final
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{
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switch (common_error(value))
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{
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case common_error::kInvalidArgument:
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return make_error_code(std::errc::invalid_argument).message();
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case common_error::kInvalidErrorCode:
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return "expect<T> was given an error value of zero";
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default:
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break;
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}
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return "Unknown basic_category() value";
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}
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virtual std::error_condition default_error_condition(int value) const noexcept override final
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{
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// maps specific errors to generic `std::errc` cases.
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switch (common_error(value))
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{
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case common_error::kInvalidArgument:
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case common_error::kInvalidErrorCode:
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return std::errc::invalid_argument;
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default:
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break;
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}
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return std::error_condition{value, *this};
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}
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};
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}
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std::error_category const& common_category() noexcept
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{
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static const category instance{};
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return instance;
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}
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