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sparse_set: iterator review

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This commit is contained in:
Michele Caini
2021-10-20 09:41:27 +02:00
parent df9316b896
commit 4b9331f086
1 changed files with 39 additions and 28 deletions
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67
src/entt/entity/sparse_set.hpp
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@@ -72,38 +72,10 @@ struct sparse_set_iterator final {
return (*this + -value);
}
difference_type operator-(const sparse_set_iterator &other) const ENTT_NOEXCEPT {
return other.index - index;
}
[[nodiscard]] reference operator[](const difference_type value) const {
return *operator+(value);
}
[[nodiscard]] bool operator==(const sparse_set_iterator &other) const ENTT_NOEXCEPT {
return other.index == index;
}
[[nodiscard]] bool operator!=(const sparse_set_iterator &other) const ENTT_NOEXCEPT {
return !(*this == other);
}
[[nodiscard]] bool operator<(const sparse_set_iterator &other) const ENTT_NOEXCEPT {
return index > other.index;
}
[[nodiscard]] bool operator>(const sparse_set_iterator &other) const ENTT_NOEXCEPT {
return index < other.index;
}
[[nodiscard]] bool operator<=(const sparse_set_iterator &other) const ENTT_NOEXCEPT {
return !(*this > other);
}
[[nodiscard]] bool operator>=(const sparse_set_iterator &other) const ENTT_NOEXCEPT {
return !(*this < other);
}
[[nodiscard]] pointer operator->() const {
const auto pos = index - 1;
return packed->data() + pos;
@@ -113,11 +85,50 @@ struct sparse_set_iterator final {
return *operator->();
}
[[nodiscard]] difference_type base() const ENTT_NOEXCEPT {
return index;
}
private:
const Container *packed;
difference_type index;
};
template<typename Container>
[[nodiscard]] auto operator-(const sparse_set_iterator<Container> &lhs, const sparse_set_iterator<Container> &rhs) ENTT_NOEXCEPT {
return rhs.base() - lhs.base();
}
template<typename Container>
[[nodiscard]] bool operator==(const sparse_set_iterator<Container> &lhs, const sparse_set_iterator<Container> &rhs) ENTT_NOEXCEPT {
return lhs.base() == rhs.base();
}
template<typename Container>
[[nodiscard]] bool operator!=(const sparse_set_iterator<Container> &lhs, const sparse_set_iterator<Container> &rhs) ENTT_NOEXCEPT {
return !(lhs == rhs);
}
template<typename Container>
[[nodiscard]] bool operator<(const sparse_set_iterator<Container> &lhs, const sparse_set_iterator<Container> &rhs) ENTT_NOEXCEPT {
return lhs.base() > rhs.base();
}
template<typename Container>
[[nodiscard]] bool operator>(const sparse_set_iterator<Container> &lhs, const sparse_set_iterator<Container> &rhs) ENTT_NOEXCEPT {
return lhs.base() < rhs.base();
}
template<typename Container>
[[nodiscard]] bool operator<=(const sparse_set_iterator<Container> &lhs, const sparse_set_iterator<Container> &rhs) ENTT_NOEXCEPT {
return !(lhs > rhs);
}
template<typename Container>
[[nodiscard]] bool operator>=(const sparse_set_iterator<Container> &lhs, const sparse_set_iterator<Container> &rhs) ENTT_NOEXCEPT {
return !(lhs < rhs);
}
} // namespace internal
/**