1 files changed, 31 insertions, 0 deletions
diff --git a/include/ncurses/utils/modifiers.hpp b/include/ncurses/utils/modifiers.hpp
new file mode 100644
index 0000000..79e4139
--- /dev/null
+++ b/include/ncurses/utils/modifiers.hpp
@@ -0,0 +1,31 @@
+#ifndef INCLUDE_UTILS_MODIFIERS_HPP_
+#define INCLUDE_UTILS_MODIFIERS_HPP_
+
+#include <type_traits>
+
+#include <ncurses/utils/flags.hpp>
+
+namespace NCURSES_CPP_NAMESPACE {
+
+template <typename Derived, typename ApplicantType> class composable {
+public:
+  using flags_type = multiflags<ApplicantType>;
+  using flags_mask_type = multiflags<ApplicantType>;
+
+  NCURSES_CPP_CONSTEXPR_14 composable &
+  operator&(const ApplicantType applicant) {
+    static_cast<Derived *>(this)->value_();
+  }
+
+  NCURSES_CPP_CONSTEXPR_14 composable &operator&(const flags_type &flags) {
+    value_ &= static_cast<flags_mask_type>(flags);
+    return *this;
+  }
+
+private:
+  value_type value_;
+};
+
+} // namespace NCURSES_CPP_NAMESPACE
+
+#endif // INCLUDE_UTILS_MODIFIERS_HPP_