Utility: enum helpers library

Tests/CMakeLists.txt

@@ -28,6 +28,7 @@ add_executable(tests
     function.cpp
     assert_ndebug.cpp
     assert.cpp
+    enum_helpers.cpp
 )
 
 target_link_libraries(tests

Tests/enum_helpers.cpp

@@ -0,0 +1,41 @@
+//
+// Created by erki on 15.07.22.
+//
+
+#include <catch2/catch.hpp>
+
+#include "utility_enum_helpers.hpp"
+
+namespace
+{
+
+enum class TestEnum : unsigned
+{
+  FLAG_0 = 1,
+  FLAG_1 = 2,
+  FLAG_2 = 4
+};
+
+SKULLC_ENUM_DECLARE_BITFLAG_OPERATORS(TestEnum)
+
+}// namespace
+
+TEST_CASE("OR operator works as expected.", "[utility],[enum_helpers]")
+{
+  const TestEnum a = TestEnum::FLAG_0;
+  const TestEnum b = TestEnum::FLAG_1;
+
+  const TestEnum sum = a | b;
+  CHECK(unsigned(sum) == 3u);
+}
+
+TEST_CASE("AND operator works as expected.", "[utility],[enum_helpers]")
+{
+  const TestEnum a = TestEnum::FLAG_0 | TestEnum::FLAG_1;
+
+  const TestEnum masked_1 = a & TestEnum::FLAG_0;
+  CHECK(masked_1 == TestEnum::FLAG_0);
+
+  const TestEnum masked_2 = a & TestEnum::FLAG_2;
+  CHECK(masked_2 != TestEnum::FLAG_2);
+}

Utility/Inc/utility_enum_helpers.hpp

@@ -0,0 +1,20 @@
+//
+// Created by erki on 15.07.22.
+//
+
+#ifndef SKULLC_UTILITY_ENUM_HELPERS_HPP_
+#define SKULLC_UTILITY_ENUM_HELPERS_HPP_
+
+#define SKULLC_ENUM_DECLARE_BITFLAG_OPERATORS(E)                      \
+  inline E operator|(const E& lhs, const E& rhs)                      \
+  {                                                                   \
+    using T = std::underlying_type_t<E>;                              \
+    return static_cast<E>(static_cast<T>(lhs) | static_cast<T>(rhs)); \
+  }                                                                   \
+  inline E operator&(const E& lhs, const E& rhs)                      \
+  {                                                                   \
+    using T = std::underlying_type_t<E>;                              \
+    return static_cast<E>(static_cast<T>(lhs) & static_cast<T>(rhs)); \
+  }
+
+#endif//SKULLC_UTILITY_ENUM_HELPERS_HPP_

Utility/Inc/utility_staticpointer.hpp

@@ -71,6 +71,7 @@ struct StaticPointer
     SKULLC_ASSERT_DEBUG(initialized_);
     return reinterpret_cast<const value_type*>(storage);
   }
+
 private:
   bool initialized_ = false;
 };