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enum_integer_value -> enum_integer

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terik23 2019-04-30 11:42:31 +05:00
parent 39c5ed518d
commit 8f095f8c22
3 changed files with 13 additions and 13 deletions
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16
README.md
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@ -22,10 +22,10 @@
Header-only C++17 library provides static reflection for enums, work with any enum type without any macro or boilerplate code. Header-only C++17 library provides static reflection for enums, work with any enum type without any macro or boilerplate code.
* `enum_cast` obtains enum value from string or integer. * `enum_cast` obtains enum value from string or integer.
* `enum_integer_value` obtains integer value from enum value.
* `enum_value` returns enum value at specified index. * `enum_value` returns enum value at specified index.
* `enum_values` obtains enum value sequence. * `enum_values` obtains enum value sequence.
* `enum_count` returns number of enum values. * `enum_count` returns number of enum values.
* `enum_integer` obtains integer value from enum value.
* `enum_name` returns string name from enum value. * `enum_name` returns string name from enum value.
* `enum_names` obtains string enum name sequence. * `enum_names` obtains string enum name sequence.
* `enum_entries` obtains pair (value enum, string enum name) sequence. * `enum_entries` obtains pair (value enum, string enum name) sequence.
@ -110,13 +110,6 @@ enum Color { RED = 2, BLUE = 4, GREEN = 8 };
// color -> Color::RED // color -> Color::RED
``` ```
* Enum value to integer
```cpp
Color color = Color::RED;
auto color_integer = magic_enum::enum_integer_value(color);
// color -> 2
```
* Enum value sequence * Enum value sequence
```cpp ```cpp
constexpr auto colors = magic_enum::enum_values<Color>(); constexpr auto colors = magic_enum::enum_values<Color>();
@ -130,6 +123,13 @@ enum Color { RED = 2, BLUE = 4, GREEN = 8 };
// color_count -> 3 // color_count -> 3
``` ```
* Enum value to integer
```cpp
Color color = Color::RED;
auto color_integer = magic_enum::enum_integer(color);
// color -> 2
```
* Enum names sequence * Enum names sequence
```cpp ```cpp
constexpr auto color_names = magic_enum::enum_names<Color>(); constexpr auto color_names = magic_enum::enum_names<Color>();

6
example/example.cpp
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@ -54,9 +54,9 @@ int main() {
} }
// Enum value to integer value. // Enum value to integer value.
auto color_integer_value = magic_enum::enum_integer_value(Color::RED); auto color_integer = magic_enum::enum_integer(Color::RED);
if (color_integer_value == static_cast<std::underlying_type_t<Color>>(Color::RED)) { if (color_integer == static_cast<std::underlying_type_t<Color>>(Color::RED)) {
std::cout << "RED = " << color_integer_value << std::endl; // RED = -10 std::cout << "RED = " << color_integer << std::endl; // RED = -10
} }
using namespace magic_enum::ops; // out-of-the-box stream operator for enums. using namespace magic_enum::ops; // out-of-the-box stream operator for enums.

4
include/magic_enum.hpp
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@ -245,9 +245,9 @@ template <typename E, typename = detail::enable_if_enum_t<E>>
// Returns integer value from enum value. // Returns integer value from enum value.
template <typename E, typename = detail::enable_if_enum_t<E>> template <typename E, typename = detail::enable_if_enum_t<E>>
[[nodiscard]] constexpr auto enum_integer_value(E value) noexcept { [[nodiscard]] constexpr auto enum_integer(E value) noexcept {
using D = std::decay_t<E>; using D = std::decay_t<E>;
static_assert(std::is_enum_v<D>, "magic_enum::enum_integer_value requires enum type."); static_assert(std::is_enum_v<D>, "magic_enum::enum_integer requires enum type.");
return static_cast<std::underlying_type_t<D>>(value); return static_cast<std::underlying_type_t<D>>(value);
} }