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This commit is contained in:
neargye 2020-08-15 22:47:20 +05:00
parent 7892516990
commit d525acae66
3 changed files with 131 additions and 150 deletions
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22
example/enum_flag_example.cpp
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@ -34,21 +34,17 @@ int main() {
std::cout << f1_name << std::endl; // Endangered
// String enum name sequence.
constexpr auto names = magic_enum::flags::enum_names<AnimalFlags>();
constexpr auto& names = magic_enum::flags::enum_names<AnimalFlags>();
std::cout << "AnimalFlags names:";
for (auto n : names) {
for (const auto& n : names) {
std::cout << " " << n;
}
std::cout << std::endl;
// AnimalFlags names: HasClaws CanFly EatsFish Endangered
#if 0
// String name to enum value.
auto f2 = magic_enum::flags::enum_cast<AnimalFlags>("EatsFish|CanFly");
#else
auto f2 = magic_enum::flags::enum_cast<AnimalFlags>(1074790400);
#endif
if (f2.has_value() && f2.value() == AnimalFlags::EatsFish) {
if (f2.has_value()) {
std::cout << "EatsFish = " << magic_enum::flags::enum_integer(f2.value()) << std::endl; // CanFly|EatsFish = 1074790400
}
@ -60,9 +56,7 @@ auto f2 = magic_enum::flags::enum_cast<AnimalFlags>(1074790400);
// Enum value to integer value.
auto f4_integer = magic_enum::flags::enum_integer(AnimalFlags::HasClaws);
if (f4_integer == static_cast<std::underlying_type_t<AnimalFlags>>(AnimalFlags::HasClaws)) {
std::cout << "HasClaws = " << f4_integer << std::endl; // HasClaws = 1024
}
std::cout << "HasClaws = " << f4_integer << std::endl; // HasClaws = 1024
using namespace magic_enum::flags::ostream_operators; // out-of-the-box ostream operator for all enums.
// ostream operator for enum.
@ -75,9 +69,9 @@ auto f2 = magic_enum::flags::enum_cast<AnimalFlags>(1074790400);
std::cout << "AnimalFlags[0] = " << magic_enum::flags::enum_value<AnimalFlags>(0) << std::endl; // AnimalFlags[0] = HasClaws
// Enum value sequence.
constexpr auto values = magic_enum::flags::enum_values<AnimalFlags>();
constexpr auto& values = magic_enum::flags::enum_values<AnimalFlags>();
std::cout << "AnimalFlags values:";
for (AnimalFlags f : values) {
for (const auto& f : values) {
std::cout << " " << f; // ostream operator for enum.
}
std::cout << std::endl;
@ -89,9 +83,9 @@ auto f2 = magic_enum::flags::enum_cast<AnimalFlags>(1074790400);
std::cout << flag << std::endl; // HasClaws|CanFly
// Enum pair (value enum, string enum name) sequence.
constexpr auto entries = magic_enum::flags::enum_entries<AnimalFlags>();
constexpr auto& entries = magic_enum::flags::enum_entries<AnimalFlags>();
std::cout << "AnimalFlags entries:";
for (auto e : entries) {
for (const auto& e : entries) {
std::cout << " " << e.second << " = " << magic_enum::flags::enum_integer(e.first);
}
std::cout << std::endl;