Maxim Integrated / MaximInterface

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

MaximInterfaceCore/SafeBool.hpp@7:9cd16581b578, 2019-07-22 (annotated)

Committer:
IanBenzMaxim
Date:
Mon Jul 22 11:44:07 2019 -0500
Revision:
7:9cd16581b578
Child:
8:5ea891c7d1a1
Updated to version 1.9.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 7:9cd16581b578 1 /*******************************************************************************
IanBenzMaxim 7:9cd16581b578 2 * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
IanBenzMaxim 7:9cd16581b578 3 *
IanBenzMaxim 7:9cd16581b578 4 * Permission is hereby granted, free of charge, to any person obtaining a
IanBenzMaxim 7:9cd16581b578 5 * copy of this software and associated documentation files (the "Software"),
IanBenzMaxim 7:9cd16581b578 6 * to deal in the Software without restriction, including without limitation
IanBenzMaxim 7:9cd16581b578 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
IanBenzMaxim 7:9cd16581b578 8 * and/or sell copies of the Software, and to permit persons to whom the
IanBenzMaxim 7:9cd16581b578 9 * Software is furnished to do so, subject to the following conditions:
IanBenzMaxim 7:9cd16581b578 10 *
IanBenzMaxim 7:9cd16581b578 11 * The above copyright notice and this permission notice shall be included
IanBenzMaxim 7:9cd16581b578 12 * in all copies or substantial portions of the Software.
IanBenzMaxim 7:9cd16581b578 13 *
IanBenzMaxim 7:9cd16581b578 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
IanBenzMaxim 7:9cd16581b578 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
IanBenzMaxim 7:9cd16581b578 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IanBenzMaxim 7:9cd16581b578 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
IanBenzMaxim 7:9cd16581b578 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
IanBenzMaxim 7:9cd16581b578 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
IanBenzMaxim 7:9cd16581b578 20 * OTHER DEALINGS IN THE SOFTWARE.
IanBenzMaxim 7:9cd16581b578 21 *
IanBenzMaxim 7:9cd16581b578 22 * Except as contained in this notice, the name of Maxim Integrated
IanBenzMaxim 7:9cd16581b578 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
IanBenzMaxim 7:9cd16581b578 24 * Products, Inc. Branding Policy.
IanBenzMaxim 7:9cd16581b578 25 *
IanBenzMaxim 7:9cd16581b578 26 * The mere transfer of this software does not imply any licenses
IanBenzMaxim 7:9cd16581b578 27 * of trade secrets, proprietary technology, copyrights, patents,
IanBenzMaxim 7:9cd16581b578 28 * trademarks, maskwork rights, or any other form of intellectual
IanBenzMaxim 7:9cd16581b578 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
IanBenzMaxim 7:9cd16581b578 30 * ownership rights.
IanBenzMaxim 7:9cd16581b578 31 *******************************************************************************/
IanBenzMaxim 7:9cd16581b578 32
IanBenzMaxim 7:9cd16581b578 33 #ifndef MaximInterfaceCore_SafeBool
IanBenzMaxim 7:9cd16581b578 34 #define MaximInterfaceCore_SafeBool
IanBenzMaxim 7:9cd16581b578 35
IanBenzMaxim 7:9cd16581b578 36 #include <stddef.h>
IanBenzMaxim 7:9cd16581b578 37 #include "Unconstructible.hpp"
IanBenzMaxim 7:9cd16581b578 38
IanBenzMaxim 7:9cd16581b578 39 namespace MaximInterfaceCore {
IanBenzMaxim 7:9cd16581b578 40 namespace detail {
IanBenzMaxim 7:9cd16581b578 41
IanBenzMaxim 7:9cd16581b578 42 // Implement SafeBool as a member function pointer since some compilers allow
IanBenzMaxim 7:9cd16581b578 43 // function pointer to void pointer conversion.
IanBenzMaxim 7:9cd16581b578 44 struct SafeBoolHelper : Unconstructible {
IanBenzMaxim 7:9cd16581b578 45 void trueValue() const {}
IanBenzMaxim 7:9cd16581b578 46 };
IanBenzMaxim 7:9cd16581b578 47
IanBenzMaxim 7:9cd16581b578 48 } // namespace detail
IanBenzMaxim 7:9cd16581b578 49
IanBenzMaxim 7:9cd16581b578 50 /// @brief Type definition for SafeBool.
IanBenzMaxim 7:9cd16581b578 51 /// @details
IanBenzMaxim 7:9cd16581b578 52 /// SafeBool is a boolean type that eliminates many error-prone implicit
IanBenzMaxim 7:9cd16581b578 53 /// conversions allowed by the fundamental bool type.
IanBenzMaxim 7:9cd16581b578 54 /// @note
IanBenzMaxim 7:9cd16581b578 55 /// SafeBool can be used to add an explicit bool conversion operator to a type.
IanBenzMaxim 7:9cd16581b578 56 typedef void (detail::SafeBoolHelper::*SafeBool)() const;
IanBenzMaxim 7:9cd16581b578 57
IanBenzMaxim 7:9cd16581b578 58 /// Constructor for SafeBool.
IanBenzMaxim 7:9cd16581b578 59 inline SafeBool makeSafeBool(bool value) {
IanBenzMaxim 7:9cd16581b578 60 return value ? &detail::SafeBoolHelper::trueValue : NULL;
IanBenzMaxim 7:9cd16581b578 61 }
IanBenzMaxim 7:9cd16581b578 62
IanBenzMaxim 7:9cd16581b578 63 } // namespace MaximInterfaceCore
IanBenzMaxim 7:9cd16581b578 64
IanBenzMaxim 7:9cd16581b578 65 #endif