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| author | untodesu <kirill@untode.su> | 2025-03-15 16:22:09 +0500 |
|---|---|---|
| committer | untodesu <kirill@untode.su> | 2025-03-15 16:22:09 +0500 |
| commit | 3bf42c6ff3805a0d42bbc661794a95ff31bedc26 (patch) | |
| tree | 05049955847504808d6bed2bb7b155f8b03807bb /deps/include/entt/meta/range.hpp | |
| parent | 02294547dcde0d4ad76e229106702261e9f10a51 (diff) | |
| download | voxelius-3bf42c6ff3805a0d42bbc661794a95ff31bedc26.tar.bz2 voxelius-3bf42c6ff3805a0d42bbc661794a95ff31bedc26.zip | |
Add whatever I was working on for the last month
Diffstat (limited to 'deps/include/entt/meta/range.hpp')
| -rw-r--r-- | deps/include/entt/meta/range.hpp | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/deps/include/entt/meta/range.hpp b/deps/include/entt/meta/range.hpp new file mode 100644 index 0000000..96e4664 --- /dev/null +++ b/deps/include/entt/meta/range.hpp @@ -0,0 +1,143 @@ +#ifndef ENTT_META_RANGE_HPP
+#define ENTT_META_RANGE_HPP
+
+#include <cstddef>
+#include <iterator>
+#include <utility>
+#include "../core/fwd.hpp"
+#include "../core/iterator.hpp"
+#include "context.hpp"
+
+namespace entt {
+
+/*! @cond TURN_OFF_DOXYGEN */
+namespace internal {
+
+template<typename Type, typename It>
+struct meta_range_iterator final {
+ using value_type = std::pair<id_type, Type>;
+ using pointer = input_iterator_pointer<value_type>;
+ using reference = value_type;
+ using difference_type = std::ptrdiff_t;
+ using iterator_category = std::input_iterator_tag;
+ using iterator_concept = std::random_access_iterator_tag;
+
+ constexpr meta_range_iterator() noexcept
+ : it{},
+ ctx{} {}
+
+ constexpr meta_range_iterator(const meta_ctx &area, const It iter) noexcept
+ : it{iter},
+ ctx{&area} {}
+
+ constexpr meta_range_iterator &operator++() noexcept {
+ return ++it, *this;
+ }
+
+ constexpr meta_range_iterator operator++(int) noexcept {
+ meta_range_iterator orig = *this;
+ return ++(*this), orig;
+ }
+
+ constexpr meta_range_iterator &operator--() noexcept {
+ return --it, *this;
+ }
+
+ constexpr meta_range_iterator operator--(int) noexcept {
+ meta_range_iterator orig = *this;
+ return operator--(), orig;
+ }
+
+ constexpr meta_range_iterator &operator+=(const difference_type value) noexcept {
+ it += value;
+ return *this;
+ }
+
+ constexpr meta_range_iterator operator+(const difference_type value) const noexcept {
+ meta_range_iterator copy = *this;
+ return (copy += value);
+ }
+
+ constexpr meta_range_iterator &operator-=(const difference_type value) noexcept {
+ return (*this += -value);
+ }
+
+ constexpr meta_range_iterator operator-(const difference_type value) const noexcept {
+ return (*this + -value);
+ }
+
+ [[nodiscard]] constexpr reference operator[](const difference_type value) const noexcept {
+ return {it[value].first, Type{*ctx, it[value].second}};
+ }
+
+ [[nodiscard]] constexpr pointer operator->() const noexcept {
+ return operator*();
+ }
+
+ [[nodiscard]] constexpr reference operator*() const noexcept {
+ return operator[](0);
+ }
+
+ template<typename... Args>
+ friend constexpr std::ptrdiff_t operator-(const meta_range_iterator<Args...> &, const meta_range_iterator<Args...> &) noexcept;
+
+ template<typename... Args>
+ friend constexpr bool operator==(const meta_range_iterator<Args...> &, const meta_range_iterator<Args...> &) noexcept;
+
+ template<typename... Args>
+ friend constexpr bool operator<(const meta_range_iterator<Args...> &, const meta_range_iterator<Args...> &) noexcept;
+
+private:
+ It it;
+ const meta_ctx *ctx;
+};
+
+template<typename... Args>
+[[nodiscard]] constexpr std::ptrdiff_t operator-(const meta_range_iterator<Args...> &lhs, const meta_range_iterator<Args...> &rhs) noexcept {
+ return lhs.it - rhs.it;
+}
+
+template<typename... Args>
+[[nodiscard]] constexpr bool operator==(const meta_range_iterator<Args...> &lhs, const meta_range_iterator<Args...> &rhs) noexcept {
+ return lhs.it == rhs.it;
+}
+
+template<typename... Args>
+[[nodiscard]] constexpr bool operator!=(const meta_range_iterator<Args...> &lhs, const meta_range_iterator<Args...> &rhs) noexcept {
+ return !(lhs == rhs);
+}
+
+template<typename... Args>
+[[nodiscard]] constexpr bool operator<(const meta_range_iterator<Args...> &lhs, const meta_range_iterator<Args...> &rhs) noexcept {
+ return lhs.it < rhs.it;
+}
+
+template<typename... Args>
+[[nodiscard]] constexpr bool operator>(const meta_range_iterator<Args...> &lhs, const meta_range_iterator<Args...> &rhs) noexcept {
+ return rhs < lhs;
+}
+
+template<typename... Args>
+[[nodiscard]] constexpr bool operator<=(const meta_range_iterator<Args...> &lhs, const meta_range_iterator<Args...> &rhs) noexcept {
+ return !(lhs > rhs);
+}
+
+template<typename... Args>
+[[nodiscard]] constexpr bool operator>=(const meta_range_iterator<Args...> &lhs, const meta_range_iterator<Args...> &rhs) noexcept {
+ return !(lhs < rhs);
+}
+
+} // namespace internal
+/*! @endcond */
+
+/**
+ * @brief Iterable range to use to iterate all types of meta objects.
+ * @tparam Type Type of meta objects returned.
+ * @tparam It Type of forward iterator.
+ */
+template<typename Type, typename It>
+using meta_range = iterable_adaptor<internal::meta_range_iterator<Type, It>>;
+
+} // namespace entt
+
+#endif
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