mirror of https://github.com/oxen-io/oxen-core.git
64 lines
2.8 KiB
C++
64 lines
2.8 KiB
C++
// Copyright (c) 2019, The Monero Project
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
// of conditions and the following disclaimer in the documentation and/or other
|
|
// materials provided with the distribution.
|
|
//
|
|
// 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without specific
|
|
// prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#include "error.h"
|
|
|
|
#include <string>
|
|
|
|
namespace {
|
|
struct category final : std::error_category {
|
|
virtual const char* name() const noexcept override final { return "common_category()"; }
|
|
|
|
virtual std::string message(int value) const override final {
|
|
switch (common_error(value)) {
|
|
case common_error::kInvalidArgument:
|
|
return std::error_code{static_cast<int>(std::errc::invalid_argument), *this}
|
|
.message();
|
|
case common_error::kInvalidErrorCode:
|
|
return "expect<T> was given an error value of zero";
|
|
default: break;
|
|
}
|
|
return "Unknown basic_category() value";
|
|
}
|
|
|
|
virtual std::error_condition default_error_condition(int value) const noexcept override final {
|
|
// maps specific errors to generic `std::errc` cases.
|
|
switch (common_error(value)) {
|
|
case common_error::kInvalidArgument:
|
|
case common_error::kInvalidErrorCode: return std::errc::invalid_argument;
|
|
default: break;
|
|
}
|
|
return std::error_condition{value, *this};
|
|
}
|
|
};
|
|
|
|
const category instance{};
|
|
} // namespace
|
|
|
|
std::error_category const& common_category() noexcept {
|
|
return instance;
|
|
}
|