diff options
Diffstat (limited to 'compat/enum-operators.hpp')
| -rw-r--r-- | compat/enum-operators.hpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/compat/enum-operators.hpp b/compat/enum-operators.hpp new file mode 100644 index 00000000..e4f81a39 --- /dev/null +++ b/compat/enum-operators.hpp @@ -0,0 +1,45 @@ +#pragma once + +#include <type_traits> + +#define OTR_FLAGS_OP2(type, op) \ + constexpr inline type operator op (type a, type b) \ + { \ + using t_ = std::underlying_type_t<type>; \ + return type(t_((a)) op t_((b))); \ + } // end + +#define OTR_FLAGS_DELETE_SHIFT(type, op) \ + template<typename u> \ + type operator op (type, u) = delete // end + +#define OTR_FLAGS_OP1(type, op) \ + constexpr inline type operator op (type x) \ + { \ + using t_ = std::underlying_type_t<type>; \ + return type(op t_((x))); \ + } // end + +#define OTR_FLAGS_ASSIGN_OP(type, op) \ + constexpr inline type& operator op ## = (type& lhs, type rhs) \ + { \ + using t_ = std::underlying_type_t<decltype(rhs)>; \ + lhs = type(t_((lhs)) op t_((rhs))); \ + return lhs; \ + } //end + +#define OTR_FLAGS_DELETE_SHIFT_ASSIGN(type, op) \ + type operator op ## = (type& lhs, type rhs) = delete //end + +#define DEFINE_ENUM_OPERATORS(type) \ + OTR_FLAGS_OP2(type, |) \ + OTR_FLAGS_OP2(type, &) \ + OTR_FLAGS_OP2(type, ^) \ + OTR_FLAGS_OP1(type, ~) \ + OTR_FLAGS_DELETE_SHIFT(type, <<); \ + OTR_FLAGS_DELETE_SHIFT(type, >>); \ + OTR_FLAGS_ASSIGN_OP(type, |) \ + OTR_FLAGS_ASSIGN_OP(type, &) \ + OTR_FLAGS_ASSIGN_OP(type, ^) \ + OTR_FLAGS_DELETE_SHIFT_ASSIGN(type, <<); \ + OTR_FLAGS_DELETE_SHIFT_ASSIGN(type, >>) // end |