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Add: EnumClassIndexContainer class.

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Cyprian Klimaszewski
2026-01-12 23:30:58 +01:00
committed by rubidium42
parent e1d474d47d
commit 810dae240a
1 changed files with 22 additions and 0 deletions
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22
src/core/enum_type.hpp
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@@ -202,4 +202,26 @@ public:
static constexpr size_t DecayValueType(const BaseClass::ValueType &value) { return to_underlying(value); }
};
/**
* A sort-of mixin that implements 'at(pos)' and 'operator[](pos)' only for a specific enum class.
* This to prevent having to call 'to_underlying()' for many container accesses, whilst preventing accidental use of the wrong index type.
* @tparam Container A base container.
* @tparam Index The enum class to use for indexing.
*/
template <typename Container, typename Index>
class EnumClassIndexContainer : public Container {
public:
Container::reference at(size_t pos) { return this->Container::at(pos); }
Container::reference at(const Index &pos) { return this->Container::at(to_underlying(pos)); }
Container::const_reference at(size_t pos) const { return this->Container::at(pos); }
Container::const_reference at(const Index &pos) const { return this->Container::at(to_underlying(pos)); }
Container::reference operator[](size_t pos) { return this->Container::operator[](pos); }
Container::reference operator[](const Index &pos) { return this->Container::operator[](to_underlying(pos)); }
Container::const_reference operator[](size_t pos) const { return this->Container::operator[](pos); }
Container::const_reference operator[](const Index &pos) const { return this->Container::operator[](to_underlying(pos)); }
};
#endif /* ENUM_TYPE_HPP */