mirror of
https://github.com/mhx/dwarfs.git
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107 lines
3.8 KiB
C++
107 lines
3.8 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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* dwarfs is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* dwarfs is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with dwarfs. If not, see <https://www.gnu.org/licenses/>.
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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/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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char const* what() const noexcept override { return what_.c_str(); }
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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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protected:
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error(std::string_view s, source_location loc) noexcept;
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private:
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std::string what_;
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source_location loc_;
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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) noexcept
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: error(s, loc) {}
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};
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class system_error : public std::system_error {
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public:
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system_error(source_location loc) noexcept;
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system_error(std::string_view s, source_location loc) noexcept;
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system_error(std::string_view s, int err, source_location loc) noexcept;
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system_error(int err, source_location loc) noexcept;
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auto get_errno() const { return code().value(); }
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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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private:
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source_location loc_;
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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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void dump_exceptions();
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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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