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Spartan322Spartan322
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Merge pull request #474 from OpenVicProject/add/cow-vector
Add cow_vector
2 parents a4cf4c3 + 375962f commit 74bf64b

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6 files changed

+1452
-23
lines changed

6 files changed

+1452
-23
lines changed

‎src/openvic-simulation/types/BasicIterator.hpp‎

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#pragma once
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#include <concepts>
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#include "openvic-simulation/utility/Utility.hpp"
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namespace OpenVic {
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template<typename Pointer, typename ContainerTag>
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struct basic_iterator {
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using iterator_type = Pointer;
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using value_type = typename std::iterator_traits<iterator_type>::value_type;
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using difference_type = typename std::iterator_traits<iterator_type>::difference_type;
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using pointer = typename std::iterator_traits<iterator_type>::pointer;
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using reference = typename std::iterator_traits<iterator_type>::reference;
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using iterator_category = typename std::iterator_traits<iterator_type>::iterator_category;
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using iterator_concept = std::contiguous_iterator_tag;
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OV_ALWAYS_INLINE constexpr basic_iterator() = default;
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OV_ALWAYS_INLINE constexpr basic_iterator(Pointer const& ptr) : _current { ptr } {}
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template<std::convertible_to<Pointer> It>
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OV_ALWAYS_INLINE constexpr basic_iterator(basic_iterator<It, ContainerTag> const& i) : _current(i.base()) {}
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[[nodiscard]] OV_ALWAYS_INLINE constexpr reference operator*() const {
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return *_current;
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}
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[[nodiscard]] OV_ALWAYS_INLINE constexpr pointer operator->() const {
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return _current;
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}
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OV_ALWAYS_INLINE constexpr basic_iterator& operator++() {
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++_current;
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return *this;
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}
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OV_ALWAYS_INLINE constexpr basic_iterator operator++(int) {
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return basic_iterator(_current++);
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}
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OV_ALWAYS_INLINE constexpr basic_iterator& operator--() {
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--_current;
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return *this;
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}
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OV_ALWAYS_INLINE constexpr basic_iterator operator--(int) {
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return basic_iterator(_current--);
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}
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[[nodiscard]] OV_ALWAYS_INLINE constexpr reference operator[](difference_type index) const {
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return _current[index];
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}
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OV_ALWAYS_INLINE constexpr basic_iterator& operator+=(difference_type index) {
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_current += index;
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return *this;
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}
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[[nodiscard]] OV_ALWAYS_INLINE constexpr basic_iterator operator+(difference_type index) const {
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return basic_iterator(_current + index);
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}
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OV_ALWAYS_INLINE constexpr basic_iterator& operator-=(difference_type index) {
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_current -= index;
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return *this;
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}
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[[nodiscard]] OV_ALWAYS_INLINE constexpr basic_iterator operator-(difference_type index) const {
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return basic_iterator(_current - index);
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}
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[[nodiscard]] OV_ALWAYS_INLINE constexpr iterator_type const& base() const {
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return _current;
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}
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protected:
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iterator_type _current {};
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};
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template<typename PtrL, typename PtrR, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr bool operator==( //
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basic_iterator<PtrL, ContainerTag> const& lhs, basic_iterator<PtrR, ContainerTag> const& rhs
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)
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requires requires {
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{ lhs.base() == rhs.base() } -> std::convertible_to<bool>;
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}
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{
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return lhs.base() == rhs.base();
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}
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template<typename PtrL, typename PtrR, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr auto operator<=>( //
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basic_iterator<PtrL, ContainerTag> const& lhs, basic_iterator<PtrR, ContainerTag> const& rhs
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) {
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return three_way(lhs.base(), rhs.base());
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}
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template<typename Ptr, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr bool operator==( //
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basic_iterator<Ptr, ContainerTag> const& lhs, basic_iterator<Ptr, ContainerTag> const& rhs
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)
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requires requires {
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{ lhs.base() == rhs.base() } -> std::convertible_to<bool>;
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}
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{
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return lhs.base() == rhs.base();
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}
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template<typename Ptr, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr auto operator<=>( //
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basic_iterator<Ptr, ContainerTag> const& lhs, basic_iterator<Ptr, ContainerTag> const& rhs
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) {
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return three_way(lhs.base(), rhs.base());
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}
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template<typename ItL, typename ItR, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr auto operator-( //
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basic_iterator<ItL, ContainerTag> const& lhs, basic_iterator<ItR, ContainerTag> const& rhs
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) -> decltype(lhs.base() - rhs.base()) {
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return lhs.base() - rhs.base();
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}
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template<typename It, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr typename basic_iterator<It, ContainerTag>::difference_type operator-( //
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basic_iterator<It, ContainerTag> const& lhs, basic_iterator<It, ContainerTag> const& rhs
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) {
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return lhs.base() - rhs.base();
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}
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template<typename It, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr basic_iterator<It, ContainerTag> operator+( //
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typename basic_iterator<It, ContainerTag>::difference_type n, basic_iterator<It, ContainerTag> const& i
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) {
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return basic_iterator<It, ContainerTag>(i.base() + n);
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}
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template<typename It, typename ContainerTag>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr It iterator_base(basic_iterator<It, ContainerTag> it) {
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return it.base();
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}
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template<typename It>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr It iterator_base(It it) {
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return it;
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}
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template<typename It>
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constexpr inline auto iterator_base(std::reverse_iterator<It> it)
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-> decltype(std::make_reverse_iterator(iterator_base(it.base()))) {
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return std::make_reverse_iterator(iterator_base(it.base()));
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}
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template<typename It>
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constexpr inline auto iterator_base(std::move_iterator<It> it)
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-> decltype(std::make_move_iterator(iterator_base(it.base()))) {
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return std::make_move_iterator(iterator_base(it.base()));
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}
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template<typename From, typename To>
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[[nodiscard]] constexpr inline From unwrap_iterator(From from, To res) {
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return from + (iterator_base(res) - iterator_base(from));
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}
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template<typename It>
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[[nodiscard]] OV_ALWAYS_INLINE constexpr It unwrap_iterator(It const&, It res) {
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return res;
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}
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};

‎src/openvic-simulation/types/CowPtr.hpp‎

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}
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namespace cow {
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template<typename T>
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T const& read(T const& v) {
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return v;
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}
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template<utility::specialization_of<cow_ptr> T>
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typename T::element_type const& read(T& v) {
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return v.read();
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}
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template<typename T>
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T& write(T& v) {
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return v;
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}
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template<utility::specialization_of<cow_ptr> T>
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typename T::element_type& write(T& v) {
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return v.write();

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