Device interface library for multiple platforms including Mbed.
Dependents: DeepCover Embedded Security in IoT MaximInterface MAXREFDES155#
Maxim Interface is a library framework focused on providing flexible and expressive hardware interfaces. Both communication interfaces such as I2C and 1-Wire and device interfaces such as DS18B20 are supported. Modern C++ concepts are used extensively while keeping compatibility with C++98/C++03 and requiring no external dependencies. The embedded-friendly design does not depend on exceptions or RTTI.
The full version of the project is hosted on GitLab: https://gitlab.com/iabenz/MaximInterface
Diff: Utilities/system_error.hpp
- Revision:
- 7:9cd16581b578
- Parent:
- 6:471901a04573
- Child:
- 8:5ea891c7d1a1
--- a/Utilities/system_error.hpp Mon Mar 04 08:10:00 2019 -0600 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,227 +0,0 @@ -/******************************************************************************* -* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved. -* -* Permission is hereby granted, free of charge, to any person obtaining a -* copy of this software and associated documentation files (the "Software"), -* to deal in the Software without restriction, including without limitation -* the rights to use, copy, modify, merge, publish, distribute, sublicense, -* and/or sell copies of the Software, and to permit persons to whom the -* Software is furnished to do so, subject to the following conditions: -* -* The above copyright notice and this permission notice shall be included -* in all copies or substantial portions of the Software. -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES -* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, -* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR -* OTHER DEALINGS IN THE SOFTWARE. -* -* Except as contained in this notice, the name of Maxim Integrated -* Products, Inc. shall not be used except as stated in the Maxim Integrated -* Products, Inc. Branding Policy. -* -* The mere transfer of this software does not imply any licenses -* of trade secrets, proprietary technology, copyrights, patents, -* trademarks, maskwork rights, or any other form of intellectual -* property whatsoever. Maxim Integrated Products, Inc. retains all -* ownership rights. -*******************************************************************************/ - -/// @file -/// @brief -/// Error handling constructs similar to std::error_code, std::error_condition, -/// and std::error_category. - -#ifndef MaximInterface_system_error -#define MaximInterface_system_error - -#include <stdexcept> -#include <string> -#include "Export.h" -#include "SafeBool.hpp" -#include "Uncopyable.hpp" - -namespace MaximInterface { - -class error_condition; -class error_code; - -class error_category : private Uncopyable { -public: - virtual ~error_category() {} - - virtual const char * name() const = 0; - - MaximInterface_EXPORT virtual error_condition - default_error_condition(int code) const; - - MaximInterface_EXPORT virtual bool - equivalent(int code, const error_condition & condition) const; - - MaximInterface_EXPORT virtual bool equivalent(const error_code & code, - int condition) const; - - virtual std::string message(int condition) const = 0; -}; - -inline bool operator==(const error_category & lhs, const error_category & rhs) { - return &lhs == &rhs; -} - -inline bool operator!=(const error_category & lhs, const error_category & rhs) { - return !operator==(lhs, rhs); -} - -inline bool operator<(const error_category & lhs, const error_category & rhs) { - return &lhs < &rhs; -} - -MaximInterface_EXPORT const error_category & system_category(); - -class error_condition { -public: - error_condition() : value_(0), category_(&system_category()) {} - - error_condition(int value, const error_category & category) - : value_(value), category_(&category) {} - - void assign(int value, const error_category & category) { - value_ = value; - category_ = &category; - } - - void clear() { - value_ = 0; - category_ = &system_category(); - } - - int value() const { return value_; } - - const error_category & category() const { return *category_; } - - std::string message() const { return category().message(value()); } - - operator SafeBool() const { return makeSafeBool(value() != 0); } - -private: - int value_; - const error_category * category_; -}; - -inline bool operator==(const error_condition & lhs, - const error_condition & rhs) { - return (lhs.value() == rhs.value()) && (lhs.category() == rhs.category()); -} - -inline bool operator!=(const error_condition & lhs, - const error_condition & rhs) { - return !operator==(lhs, rhs); -} - -inline bool operator<(const error_condition & lhs, - const error_condition & rhs) { - return (lhs.category() < rhs.category()) || - ((lhs.category() == rhs.category()) && (lhs.value() < rhs.value())); -} - -class error_code { -public: - error_code() : value_(0), category_(&system_category()) {} - - error_code(int value, const error_category & category) - : value_(value), category_(&category) {} - - void assign(int value, const error_category & category) { - value_ = value; - category_ = &category; - } - - void clear() { - value_ = 0; - category_ = &system_category(); - } - - int value() const { return value_; } - - const error_category & category() const { return *category_; } - - error_condition default_error_condition() const { - return category().default_error_condition(value()); - } - - std::string message() const { return category().message(value()); } - - operator SafeBool() const { return makeSafeBool(value() != 0); } - -private: - int value_; - const error_category * category_; -}; - -inline bool operator==(const error_code & lhs, const error_code & rhs) { - return (lhs.value() == rhs.value()) && (lhs.category() == rhs.category()); -} - -inline bool operator!=(const error_code & lhs, const error_code & rhs) { - return !operator==(lhs, rhs); -} - -inline bool operator<(const error_code & lhs, const error_code & rhs) { - return (lhs.category() < rhs.category()) || - ((lhs.category() == rhs.category()) && (lhs.value() < rhs.value())); -} - -template <typename CharT, typename Traits> -std::basic_ostream<CharT, Traits> & -operator<<(std::basic_ostream<CharT, Traits> & os, const error_code & ec) { - os << ec.category().name() << ':' << ec.value(); - return os; -} - -inline bool operator==(const error_code & lhs, const error_condition & rhs) { - return lhs.category().equivalent(lhs.value(), rhs) || - rhs.category().equivalent(lhs, rhs.value()); -} - -inline bool operator!=(const error_code & lhs, const error_condition & rhs) { - return !operator==(lhs, rhs); -} - -inline bool operator==(const error_condition & lhs, const error_code & rhs) { - return operator==(rhs, lhs); -} - -inline bool operator!=(const error_condition & lhs, const error_code & rhs) { - return !operator==(lhs, rhs); -} - -class system_error : public std::runtime_error { -public: - MaximInterface_EXPORT system_error(const error_code & ec); - - MaximInterface_EXPORT system_error(const error_code & ec, - const std::string & what_arg); - - MaximInterface_EXPORT system_error(const error_code & ec, - const char * what_arg); - - MaximInterface_EXPORT system_error(int ev, const error_category & ecat); - - MaximInterface_EXPORT system_error(int ev, const error_category & ecat, - const std::string & what_arg); - - MaximInterface_EXPORT system_error(int ev, const error_category & ecat, - const char * what_arg); - - const error_code & code() const { return code_; } - -private: - error_code code_; -}; - -} // namespace MaximInterface - -#endif