PiPedal 1.2.33 initial commit

PiPedalCommon/src/include/EnumFlags.hpp

@@ -0,0 +1,60 @@
+#include <type_traits>
+
+#define ENABLE_ENUM_FLAGS(enum_type)\
+template<> struct enum_traits<enum_type> :\
+    enum_traits<>::allow_bitops {};\
+
+
+template<class T = void> struct enum_traits {};
+
+template<> struct enum_traits<void> {
+    struct _allow_bitops {
+        static constexpr bool allow_bitops = true;
+    };
+    using allow_bitops = _allow_bitops;
+
+    template<class T, class R = T>
+    using t = typename std::enable_if<std::is_enum<T>::value and
+        enum_traits<T>::allow_bitops, R>::type;
+
+    template<class T>
+    using u = typename std::underlying_type<T>::type;
+};
+
+template<class T>
+constexpr enum_traits<>::t<T> operator~(T a) {
+    return static_cast<T>(~static_cast<enum_traits<>::u<T>>(a));
+}
+template<class T>
+constexpr enum_traits<>::t<T> operator|(T a, T b) {
+    return static_cast<T>(
+        static_cast<enum_traits<>::u<T>>(a) |
+        static_cast<enum_traits<>::u<T>>(b));
+}
+template<class T>
+constexpr enum_traits<>::t<T> operator&(T a, T b) {
+    return static_cast<T>(
+        static_cast<enum_traits<>::u<T>>(a) &
+        static_cast<enum_traits<>::u<T>>(b));
+}
+template<class T>
+constexpr enum_traits<>::t<T> operator^(T a, T b) {
+    return static_cast<T>(
+        static_cast<enum_traits<>::u<T>>(a) ^
+        static_cast<enum_traits<>::u<T>>(b));
+}
+template<class T>
+constexpr enum_traits<>::t<T, T&> operator|=(T& a, T b) {
+    a = a | b;
+    return a;
+}
+template<class T>
+constexpr enum_traits<>::t<T, T&> operator&=(T& a, T b) {
+    a = a & b;
+    return a;
+}
+template<class T>
+constexpr enum_traits<>::t<T, T&> operator^=(T& a, T b) {
+    a = a ^ b;
+    return a;
+}