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123 lines
4.4 KiB
C++
123 lines
4.4 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et: */
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/**
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* \author Marcus Holland-Moritz (github@mhxnet.de)
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* \copyright Copyright (c) Marcus Holland-Moritz
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*
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* This file is part of dwarfs.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the “Software”), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include <exception>
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#include <string>
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#include <string_view>
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#include <system_error>
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#include <dwarfs/config.h>
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#ifdef DWARFS_STACKTRACE_ENABLED
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#include <cpptrace/cpptrace.hpp>
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#endif
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#include <dwarfs/source_location.h>
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namespace dwarfs {
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class error : public std::exception {
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public:
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auto location() const { return loc_; }
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auto file() const { return loc_.file_name(); }
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auto line() const { return loc_.line(); }
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#ifdef DWARFS_STACKTRACE_ENABLED
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cpptrace::stacktrace stacktrace() const;
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#endif
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protected:
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error(source_location loc) noexcept;
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private:
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source_location loc_;
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#ifdef DWARFS_STACKTRACE_ENABLED
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cpptrace::raw_trace trace_;
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#endif
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};
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class runtime_error : public error {
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public:
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runtime_error(std::string_view s, source_location loc);
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char const* what() const noexcept override { return what_.c_str(); }
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private:
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std::string what_;
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};
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class system_error : public error {
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public:
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system_error(source_location loc);
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system_error(std::string_view s, source_location loc);
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system_error(std::string_view s, int err, source_location loc);
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system_error(int err, source_location loc);
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char const* what() const noexcept override { return syserr_.what(); }
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std::error_code const& code() const noexcept { return syserr_.code(); }
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int get_errno() const { return code().value(); }
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private:
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std::system_error syserr_;
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};
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#define DWARFS_THROW(cls, ...) \
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throw cls(__VA_ARGS__, DWARFS_CURRENT_SOURCE_LOCATION)
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#define DWARFS_CHECK(expr, message) \
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do { \
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if (!(expr)) { \
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::dwarfs::assertion_failed(#expr, message, \
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DWARFS_CURRENT_SOURCE_LOCATION); \
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} \
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} while (false)
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#define DWARFS_PANIC(message) \
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do { \
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::dwarfs::handle_panic(message, DWARFS_CURRENT_SOURCE_LOCATION); \
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} while (false)
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#define DWARFS_NOTHROW(expr) \
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[&]() -> decltype(expr) { \
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try { \
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return expr; \
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} catch (...) { \
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::dwarfs::handle_nothrow(#expr, DWARFS_CURRENT_SOURCE_LOCATION); \
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} \
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}()
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[[noreturn]] void handle_nothrow(std::string_view expr, source_location loc);
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[[noreturn]] void assertion_failed(std::string_view expr, std::string_view msg,
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source_location loc);
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[[noreturn]] void handle_panic(std::string_view msg, source_location loc);
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} // namespace dwarfs
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