Curve / flagpp

🏴‍☠️ (Opt-In) Bitwise operations on scoped enums

A C++20 library that provides (opt-in) bit-wise operations for arbitrary `enum class`es

📦 Installation

• Using CPM

  CPMFindPackage(
    NAME           flagpp
    VERSION        2.0
    GIT_REPOSITORY "https://github.com/Curve/flagpp"
  )

• Using FetchContent

  include(FetchContent)
  
  FetchContent_Declare(flagpp GIT_REPOSITORY "https://github.com/Curve/flagpp" GIT_TAG v2.0)
  FetchContent_MakeAvailable(flagpp)
  
  target_link_libraries(<target> flagpp)

📃 Usage

#include <flagpp/flags.hpp>

enum class my_enum
{
    none,
    a = 1 << 0,
    b = 1 << 1,
    c = 1 << 2,
};

template <>
constexpr bool flagpp::enabled<my_enum> = true;

// You can now use `my_enum` for bit-wise operations!

auto flag = my_enum::a;
flag |= my_enum::b;
flag |= my_enum::c;

if (flag & my_enum::b)
{
    flag &= ~my_enum::b;
}

For more examples see tests