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/FlagSet.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) 2017 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_FlagSet
IanBenzMaxim 7:9cd16581b578 34 #define MaximInterfaceCore_FlagSet
IanBenzMaxim 7:9cd16581b578 35
IanBenzMaxim 7:9cd16581b578 36 #include <stddef.h>
IanBenzMaxim 7:9cd16581b578 37 #include <bitset>
IanBenzMaxim 7:9cd16581b578 38
IanBenzMaxim 7:9cd16581b578 39 namespace MaximInterfaceCore {
IanBenzMaxim 7:9cd16581b578 40
IanBenzMaxim 7:9cd16581b578 41 /// @brief
IanBenzMaxim 7:9cd16581b578 42 /// Provides functionality similar to std::bitset except using a bit flag,
IanBenzMaxim 7:9cd16581b578 43 /// typically of an enum type, as the indexer.
IanBenzMaxim 7:9cd16581b578 44 template <typename Flag, size_t flagBits> class FlagSet {
IanBenzMaxim 7:9cd16581b578 45 public:
IanBenzMaxim 7:9cd16581b578 46 class reference {
IanBenzMaxim 7:9cd16581b578 47 public:
IanBenzMaxim 7:9cd16581b578 48 reference(FlagSet & flagSet, Flag flag) : flagSet(&flagSet), flag(flag) {}
IanBenzMaxim 7:9cd16581b578 49
IanBenzMaxim 7:9cd16581b578 50 reference & operator=(bool x) {
IanBenzMaxim 7:9cd16581b578 51 flagSet->set(flag, x);
IanBenzMaxim 7:9cd16581b578 52 return *this;
IanBenzMaxim 7:9cd16581b578 53 }
IanBenzMaxim 7:9cd16581b578 54
IanBenzMaxim 7:9cd16581b578 55 reference & operator=(const reference & x) {
IanBenzMaxim 7:9cd16581b578 56 return operator=(static_cast<bool>(x));
IanBenzMaxim 7:9cd16581b578 57 }
IanBenzMaxim 7:9cd16581b578 58
IanBenzMaxim 7:9cd16581b578 59 operator bool() const { return flagSet->test(flag); }
IanBenzMaxim 7:9cd16581b578 60
IanBenzMaxim 7:9cd16581b578 61 bool operator~() const { return reference(*this).flip(); }
IanBenzMaxim 7:9cd16581b578 62
IanBenzMaxim 7:9cd16581b578 63 reference & flip() {
IanBenzMaxim 7:9cd16581b578 64 *this = !*this;
IanBenzMaxim 7:9cd16581b578 65 return *this;
IanBenzMaxim 7:9cd16581b578 66 }
IanBenzMaxim 7:9cd16581b578 67
IanBenzMaxim 7:9cd16581b578 68 private:
IanBenzMaxim 7:9cd16581b578 69 FlagSet * flagSet;
IanBenzMaxim 7:9cd16581b578 70 Flag flag;
IanBenzMaxim 7:9cd16581b578 71 };
IanBenzMaxim 7:9cd16581b578 72
IanBenzMaxim 7:9cd16581b578 73 FlagSet() : bits() {}
IanBenzMaxim 7:9cd16581b578 74
IanBenzMaxim 7:9cd16581b578 75 FlagSet(unsigned long val) : bits(val) {}
IanBenzMaxim 7:9cd16581b578 76
IanBenzMaxim 7:9cd16581b578 77 template <typename CharT, typename Traits, typename Alloc>
IanBenzMaxim 7:9cd16581b578 78 explicit FlagSet(
IanBenzMaxim 7:9cd16581b578 79 const std::basic_string<CharT, Traits, Alloc> & str,
IanBenzMaxim 7:9cd16581b578 80 typename std::basic_string<CharT, Traits, Alloc>::size_type pos = 0,
IanBenzMaxim 7:9cd16581b578 81 typename std::basic_string<CharT, Traits, Alloc>::size_type n =
IanBenzMaxim 7:9cd16581b578 82 std::basic_string<CharT, Traits, Alloc>::npos)
IanBenzMaxim 7:9cd16581b578 83 : bits(str, pos, n) {}
IanBenzMaxim 7:9cd16581b578 84
IanBenzMaxim 7:9cd16581b578 85 bool operator==(const FlagSet & rhs) const { return bits == rhs.bits; }
IanBenzMaxim 7:9cd16581b578 86
IanBenzMaxim 7:9cd16581b578 87 bool operator!=(const FlagSet & rhs) const { return bits != rhs.bits; }
IanBenzMaxim 7:9cd16581b578 88
IanBenzMaxim 7:9cd16581b578 89 /// @name Element access
IanBenzMaxim 7:9cd16581b578 90 /// @{
IanBenzMaxim 7:9cd16581b578 91
IanBenzMaxim 7:9cd16581b578 92 bool operator[](Flag flag) const { return test(flag); }
IanBenzMaxim 7:9cd16581b578 93
IanBenzMaxim 7:9cd16581b578 94 reference operator[](Flag flag) { return reference(*this, flag); }
IanBenzMaxim 7:9cd16581b578 95
IanBenzMaxim 7:9cd16581b578 96 bool test(Flag flag) const { return (bits.to_ulong() & flag) == flag; }
IanBenzMaxim 7:9cd16581b578 97
IanBenzMaxim 7:9cd16581b578 98 bool any() const { return bits.any(); }
IanBenzMaxim 7:9cd16581b578 99
IanBenzMaxim 7:9cd16581b578 100 bool none() const { return bits.none(); }
IanBenzMaxim 7:9cd16581b578 101
IanBenzMaxim 7:9cd16581b578 102 size_t count() const { return bits.count(); }
IanBenzMaxim 7:9cd16581b578 103
IanBenzMaxim 7:9cd16581b578 104 /// @}
IanBenzMaxim 7:9cd16581b578 105
IanBenzMaxim 7:9cd16581b578 106 /// @name Capacity
IanBenzMaxim 7:9cd16581b578 107 /// @{
IanBenzMaxim 7:9cd16581b578 108
IanBenzMaxim 7:9cd16581b578 109 size_t size() const { return bits.size(); }
IanBenzMaxim 7:9cd16581b578 110
IanBenzMaxim 7:9cd16581b578 111 /// @}
IanBenzMaxim 7:9cd16581b578 112
IanBenzMaxim 7:9cd16581b578 113 /// @name Modifiers
IanBenzMaxim 7:9cd16581b578 114 /// @{
IanBenzMaxim 7:9cd16581b578 115
IanBenzMaxim 7:9cd16581b578 116 FlagSet & operator&=(const FlagSet & other) {
IanBenzMaxim 7:9cd16581b578 117 bits &= other.bits;
IanBenzMaxim 7:9cd16581b578 118 return *this;
IanBenzMaxim 7:9cd16581b578 119 }
IanBenzMaxim 7:9cd16581b578 120
IanBenzMaxim 7:9cd16581b578 121 FlagSet & operator|=(const FlagSet & other) {
IanBenzMaxim 7:9cd16581b578 122 bits |= other.bits;
IanBenzMaxim 7:9cd16581b578 123 return *this;
IanBenzMaxim 7:9cd16581b578 124 }
IanBenzMaxim 7:9cd16581b578 125
IanBenzMaxim 7:9cd16581b578 126 FlagSet & operator^=(const FlagSet & other) {
IanBenzMaxim 7:9cd16581b578 127 bits ^= other.bits;
IanBenzMaxim 7:9cd16581b578 128 return *this;
IanBenzMaxim 7:9cd16581b578 129 }
IanBenzMaxim 7:9cd16581b578 130
IanBenzMaxim 7:9cd16581b578 131 FlagSet operator~() const { return ~bits; }
IanBenzMaxim 7:9cd16581b578 132
IanBenzMaxim 7:9cd16581b578 133 FlagSet & set() {
IanBenzMaxim 7:9cd16581b578 134 bits.set();
IanBenzMaxim 7:9cd16581b578 135 return *this;
IanBenzMaxim 7:9cd16581b578 136 }
IanBenzMaxim 7:9cd16581b578 137
IanBenzMaxim 7:9cd16581b578 138 FlagSet & set(Flag flag, bool value = true) {
IanBenzMaxim 7:9cd16581b578 139 if (value) {
IanBenzMaxim 7:9cd16581b578 140 bits |= flag;
IanBenzMaxim 7:9cd16581b578 141 } else {
IanBenzMaxim 7:9cd16581b578 142 bits &= ~std::bitset<flagBits>(flag);
IanBenzMaxim 7:9cd16581b578 143 }
IanBenzMaxim 7:9cd16581b578 144 return *this;
IanBenzMaxim 7:9cd16581b578 145 }
IanBenzMaxim 7:9cd16581b578 146
IanBenzMaxim 7:9cd16581b578 147 FlagSet & reset() {
IanBenzMaxim 7:9cd16581b578 148 bits.reset();
IanBenzMaxim 7:9cd16581b578 149 return *this;
IanBenzMaxim 7:9cd16581b578 150 }
IanBenzMaxim 7:9cd16581b578 151
IanBenzMaxim 7:9cd16581b578 152 FlagSet & reset(Flag flag) { return set(flag, false); }
IanBenzMaxim 7:9cd16581b578 153
IanBenzMaxim 7:9cd16581b578 154 FlagSet & flip() {
IanBenzMaxim 7:9cd16581b578 155 bits.flip();
IanBenzMaxim 7:9cd16581b578 156 return *this;
IanBenzMaxim 7:9cd16581b578 157 }
IanBenzMaxim 7:9cd16581b578 158
IanBenzMaxim 7:9cd16581b578 159 FlagSet & flip(Flag flag) {
IanBenzMaxim 7:9cd16581b578 160 bits ^= flag;
IanBenzMaxim 7:9cd16581b578 161 return *this;
IanBenzMaxim 7:9cd16581b578 162 }
IanBenzMaxim 7:9cd16581b578 163
IanBenzMaxim 7:9cd16581b578 164 /// @}
IanBenzMaxim 7:9cd16581b578 165
IanBenzMaxim 7:9cd16581b578 166 /// @name Conversions
IanBenzMaxim 7:9cd16581b578 167 /// @{
IanBenzMaxim 7:9cd16581b578 168
IanBenzMaxim 7:9cd16581b578 169 template <typename CharT, typename Traits, typename Allocator>
IanBenzMaxim 7:9cd16581b578 170 std::basic_string<CharT, Traits, Allocator> to_string() const {
IanBenzMaxim 7:9cd16581b578 171 return bits.template to_string<CharT, Traits, Allocator>();
IanBenzMaxim 7:9cd16581b578 172 }
IanBenzMaxim 7:9cd16581b578 173
IanBenzMaxim 7:9cd16581b578 174 unsigned long to_ulong() const { return bits.to_ulong(); }
IanBenzMaxim 7:9cd16581b578 175
IanBenzMaxim 7:9cd16581b578 176 /// @}
IanBenzMaxim 7:9cd16581b578 177
IanBenzMaxim 7:9cd16581b578 178 private:
IanBenzMaxim 7:9cd16581b578 179 std::bitset<flagBits> bits;
IanBenzMaxim 7:9cd16581b578 180
IanBenzMaxim 7:9cd16581b578 181 template <typename CharT, typename Traits>
IanBenzMaxim 7:9cd16581b578 182 friend std::basic_ostream<CharT, Traits> &
IanBenzMaxim 7:9cd16581b578 183 operator<<(std::basic_ostream<CharT, Traits> & os, const FlagSet & x);
IanBenzMaxim 7:9cd16581b578 184
IanBenzMaxim 7:9cd16581b578 185 template <typename CharT, class Traits>
IanBenzMaxim 7:9cd16581b578 186 friend std::basic_istream<CharT, Traits> &
IanBenzMaxim 7:9cd16581b578 187 operator>>(std::basic_istream<CharT, Traits> & is, FlagSet & x);
IanBenzMaxim 7:9cd16581b578 188 };
IanBenzMaxim 7:9cd16581b578 189
IanBenzMaxim 7:9cd16581b578 190 template <typename Flag, size_t flagBits>
IanBenzMaxim 7:9cd16581b578 191 FlagSet<Flag, flagBits> operator&(const FlagSet<Flag, flagBits> & lhs,
IanBenzMaxim 7:9cd16581b578 192 const FlagSet<Flag, flagBits> & rhs) {
IanBenzMaxim 7:9cd16581b578 193 return FlagSet<Flag, flagBits>(lhs) &= rhs;
IanBenzMaxim 7:9cd16581b578 194 }
IanBenzMaxim 7:9cd16581b578 195
IanBenzMaxim 7:9cd16581b578 196 template <typename Flag, size_t flagBits>
IanBenzMaxim 7:9cd16581b578 197 FlagSet<Flag, flagBits> operator|(const FlagSet<Flag, flagBits> & lhs,
IanBenzMaxim 7:9cd16581b578 198 const FlagSet<Flag, flagBits> & rhs) {
IanBenzMaxim 7:9cd16581b578 199 return FlagSet<Flag, flagBits>(lhs) |= rhs;
IanBenzMaxim 7:9cd16581b578 200 }
IanBenzMaxim 7:9cd16581b578 201
IanBenzMaxim 7:9cd16581b578 202 template <typename Flag, size_t flagBits>
IanBenzMaxim 7:9cd16581b578 203 FlagSet<Flag, flagBits> operator^(const FlagSet<Flag, flagBits> & lhs,
IanBenzMaxim 7:9cd16581b578 204 const FlagSet<Flag, flagBits> & rhs) {
IanBenzMaxim 7:9cd16581b578 205 return FlagSet<Flag, flagBits>(lhs) ^= rhs;
IanBenzMaxim 7:9cd16581b578 206 }
IanBenzMaxim 7:9cd16581b578 207
IanBenzMaxim 7:9cd16581b578 208 template <typename CharT, typename Traits, typename Flag, size_t flagBits>
IanBenzMaxim 7:9cd16581b578 209 std::basic_ostream<CharT, Traits> &
IanBenzMaxim 7:9cd16581b578 210 operator<<(std::basic_ostream<CharT, Traits> & os,
IanBenzMaxim 7:9cd16581b578 211 const FlagSet<Flag, flagBits> & x) {
IanBenzMaxim 7:9cd16581b578 212 os << x.bits;
IanBenzMaxim 7:9cd16581b578 213 return os;
IanBenzMaxim 7:9cd16581b578 214 }
IanBenzMaxim 7:9cd16581b578 215
IanBenzMaxim 7:9cd16581b578 216 template <typename CharT, class Traits, typename Flag, size_t flagBits>
IanBenzMaxim 7:9cd16581b578 217 std::basic_istream<CharT, Traits> &
IanBenzMaxim 7:9cd16581b578 218 operator>>(std::basic_istream<CharT, Traits> & is,
IanBenzMaxim 7:9cd16581b578 219 FlagSet<Flag, flagBits> & x) {
IanBenzMaxim 7:9cd16581b578 220 is >> x.bits;
IanBenzMaxim 7:9cd16581b578 221 return is;
IanBenzMaxim 7:9cd16581b578 222 }
IanBenzMaxim 7:9cd16581b578 223
IanBenzMaxim 7:9cd16581b578 224 } // namespace MaximInterfaceCore
IanBenzMaxim 7:9cd16581b578 225
IanBenzMaxim 7:9cd16581b578 226 #endif