Add whatever I was working on for the last month

1 files changed, 388 insertions, 0 deletions

diff --git a/deps/include/entt/meta/container.hpp b/deps/include/entt/meta/container.hpp
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+++ b/deps/include/entt/meta/container.hpp
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+// IWYU pragma: always_keep

+

+#ifndef ENTT_META_CONTAINER_HPP

+#define ENTT_META_CONTAINER_HPP

+

+#include <array>

+#include <deque>

+#include <iterator>

+#include <list>

+#include <map>

+#include <set>

+#include <type_traits>

+#include <unordered_map>

+#include <unordered_set>

+#include <vector>

+#include "../container/dense_map.hpp"

+#include "../container/dense_set.hpp"

+#include "context.hpp"

+#include "meta.hpp"

+#include "type_traits.hpp"

+

+namespace entt {

+

+/*! @cond TURN_OFF_DOXYGEN */

+namespace internal {

+

+template<typename, typename = void>

+struct fixed_size_sequence_container: std::true_type {};

+

+template<typename Type>

+struct fixed_size_sequence_container<Type, std::void_t<decltype(&Type::clear)>>: std::false_type {};

+

+template<typename Type>

+inline constexpr bool fixed_size_sequence_container_v = fixed_size_sequence_container<Type>::value;

+

+template<typename, typename = void>

+struct key_only_associative_container: std::true_type {};

+

+template<typename Type>

+struct key_only_associative_container<Type, std::void_t<typename Type::mapped_type>>: std::false_type {};

+

+template<typename Type>

+inline constexpr bool key_only_associative_container_v = key_only_associative_container<Type>::value;

+

+template<typename, typename = void>

+struct reserve_aware_container: std::false_type {};

+

+template<typename Type>

+struct reserve_aware_container<Type, std::void_t<decltype(&Type::reserve)>>: std::true_type {};

+

+template<typename Type>

+inline constexpr bool reserve_aware_container_v = reserve_aware_container<Type>::value;

+

+} // namespace internal

+/*! @endcond */

+

+/**

+ * @brief General purpose implementation of meta sequence container traits.

+ * @tparam Type Type of underlying sequence container.

+ */

+template<typename Type>

+struct basic_meta_sequence_container_traits {

+    static_assert(std::is_same_v<Type, std::remove_cv_t<std::remove_reference_t<Type>>>, "Unexpected type");

+

+    /*! @brief Unsigned integer type. */

+    using size_type = typename meta_sequence_container::size_type;

+    /*! @brief Meta iterator type. */

+    using iterator = typename meta_sequence_container::iterator;

+

+    /*! @brief True in case of key-only containers, false otherwise. */

+    static constexpr bool fixed_size = internal::fixed_size_sequence_container_v<Type>;

+

+    /**

+     * @brief Returns the number of elements in a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @return Number of elements.

+     */

+    [[nodiscard]] static size_type size(const void *container) {

+        return static_cast<const Type *>(container)->size();

+    }

+

+    /**

+     * @brief Clears a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @return True in case of success, false otherwise.

+     */

+    [[nodiscard]] static bool clear([[maybe_unused]] void *container) {

+        if constexpr(fixed_size) {

+            return false;

+        } else {

+            static_cast<Type *>(container)->clear();

+            return true;

+        }

+    }

+

+    /**

+     * @brief Increases the capacity of a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @param sz Desired capacity.

+     * @return True in case of success, false otherwise.

+     */

+    [[nodiscard]] static bool reserve([[maybe_unused]] void *container, [[maybe_unused]] const size_type sz) {

+        if constexpr(internal::reserve_aware_container_v<Type>) {

+            static_cast<Type *>(container)->reserve(sz);

+            return true;

+        } else {

+            return false;

+        }

+    }

+

+    /**

+     * @brief Resizes a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @param sz The new number of elements.

+     * @return True in case of success, false otherwise.

+     */

+    [[nodiscard]] static bool resize([[maybe_unused]] void *container, [[maybe_unused]] const size_type sz) {

+        if constexpr(fixed_size || !std::is_default_constructible_v<typename Type::value_type>) {

+            return false;

+        } else {

+            static_cast<Type *>(container)->resize(sz);

+            return true;

+        }

+    }

+

+    /**

+     * @brief Returns a possibly const iterator to the beginning.

+     * @param area The context to pass to the newly created iterator.

+     * @param container Opaque pointer to a container of the given type.

+     * @param as_const Const opaque pointer fallback.

+     * @return An iterator to the first element of the container.

+     */

+    static iterator begin(const meta_ctx &area, void *container, const void *as_const) {

+        return container ? iterator{area, static_cast<Type *>(container)->begin()}

+                         : iterator{area, static_cast<const Type *>(as_const)->begin()};

+    }

+

+    /**

+     * @brief Returns a possibly const iterator to the end.

+     * @param area The context to pass to the newly created iterator.

+     * @param container Opaque pointer to a container of the given type.

+     * @param as_const Const opaque pointer fallback.

+     * @return An iterator that is past the last element of the container.

+     */

+    static iterator end(const meta_ctx &area, void *container, const void *as_const) {

+        return container ? iterator{area, static_cast<Type *>(container)->end()}

+                         : iterator{area, static_cast<const Type *>(as_const)->end()};

+    }

+

+    /**

+     * @brief Assigns one element to a container and constructs its object from

+     * a given opaque instance.

+     * @param area The context to pass to the newly created iterator.

+     * @param container Opaque pointer to a container of the given type.

+     * @param value Optional opaque instance of the object to construct (as

+     * value type).

+     * @param cref Optional opaque instance of the object to construct (as

+     * decayed const reference type).

+     * @param it Iterator before which the element will be inserted.

+     * @return A possibly invalid iterator to the inserted element.

+     */

+    [[nodiscard]] static iterator insert([[maybe_unused]] const meta_ctx &area, [[maybe_unused]] void *container, [[maybe_unused]] const void *value, [[maybe_unused]] const void *cref, [[maybe_unused]] const iterator &it) {

+        if constexpr(fixed_size) {

+            return iterator{};

+        } else {

+            auto *const non_const = any_cast<typename Type::iterator>(&it.base());

+            return {area, static_cast<Type *>(container)->insert(

+                              non_const ? *non_const : any_cast<const typename Type::const_iterator &>(it.base()),

+                              value ? *static_cast<const typename Type::value_type *>(value) : *static_cast<const std::remove_reference_t<typename Type::const_reference> *>(cref))};

+        }

+    }

+

+    /**

+     * @brief Erases an element from a container.

+     * @param area The context to pass to the newly created iterator.

+     * @param container Opaque pointer to a container of the given type.

+     * @param it An opaque iterator to the element to erase.

+     * @return A possibly invalid iterator following the last removed element.

+     */

+    [[nodiscard]] static iterator erase([[maybe_unused]] const meta_ctx &area, [[maybe_unused]] void *container, [[maybe_unused]] const iterator &it) {

+        if constexpr(fixed_size) {

+            return iterator{};

+        } else {

+            auto *const non_const = any_cast<typename Type::iterator>(&it.base());

+            return {area, static_cast<Type *>(container)->erase(non_const ? *non_const : any_cast<const typename Type::const_iterator &>(it.base()))};

+        }

+    }

+};

+

+/**

+ * @brief General purpose implementation of meta associative container traits.

+ * @tparam Type Type of underlying associative container.

+ */

+template<typename Type>

+struct basic_meta_associative_container_traits {

+    static_assert(std::is_same_v<Type, std::remove_cv_t<std::remove_reference_t<Type>>>, "Unexpected type");

+

+    /*! @brief Unsigned integer type. */

+    using size_type = typename meta_associative_container::size_type;

+    /*! @brief Meta iterator type. */

+    using iterator = typename meta_associative_container::iterator;

+

+    /*! @brief True in case of key-only containers, false otherwise. */

+    static constexpr bool key_only = internal::key_only_associative_container_v<Type>;

+

+    /**

+     * @brief Returns the number of elements in a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @return Number of elements.

+     */

+    [[nodiscard]] static size_type size(const void *container) {

+        return static_cast<const Type *>(container)->size();

+    }

+

+    /**

+     * @brief Clears a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @return True in case of success, false otherwise.

+     */

+    [[nodiscard]] static bool clear(void *container) {

+        static_cast<Type *>(container)->clear();

+        return true;

+    }

+

+    /**

+     * @brief Increases the capacity of a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @param sz Desired capacity.

+     * @return True in case of success, false otherwise.

+     */

+    [[nodiscard]] static bool reserve([[maybe_unused]] void *container, [[maybe_unused]] const size_type sz) {

+        if constexpr(internal::reserve_aware_container_v<Type>) {

+            static_cast<Type *>(container)->reserve(sz);

+            return true;

+        } else {

+            return false;

+        }

+    }

+

+    /**

+     * @brief Returns a possibly const iterator to the beginning.

+     * @param area The context to pass to the newly created iterator.

+     * @param container Opaque pointer to a container of the given type.

+     * @param as_const Const opaque pointer fallback.

+     * @return An iterator to the first element of the container.

+     */

+    static iterator begin(const meta_ctx &area, void *container, const void *as_const) {

+        return container ? iterator{area, std::bool_constant<key_only>{}, static_cast<Type *>(container)->begin()}

+                         : iterator{area, std::bool_constant<key_only>{}, static_cast<const Type *>(as_const)->begin()};

+    }

+

+    /**

+     * @brief Returns a possibly const iterator to the end.

+     * @param area The context to pass to the newly created iterator.

+     * @param container Opaque pointer to a container of the given type.

+     * @param as_const Const opaque pointer fallback.

+     * @return An iterator that is past the last element of the container.

+     */

+    static iterator end(const meta_ctx &area, void *container, const void *as_const) {

+        return container ? iterator{area, std::bool_constant<key_only>{}, static_cast<Type *>(container)->end()}

+                         : iterator{area, std::bool_constant<key_only>{}, static_cast<const Type *>(as_const)->end()};

+    }

+

+    /**

+     * @brief Inserts an element into a container, if the key does not exist.

+     * @param container Opaque pointer to a container of the given type.

+     * @param key An opaque key value of an element to insert.

+     * @param value Optional opaque value to insert (key-value containers).

+     * @return True if the insertion took place, false otherwise.

+     */

+    [[nodiscard]] static bool insert(void *container, const void *key, [[maybe_unused]] const void *value) {

+        if constexpr(key_only) {

+            return static_cast<Type *>(container)->insert(*static_cast<const typename Type::key_type *>(key)).second;

+        } else {

+            return static_cast<Type *>(container)->emplace(*static_cast<const typename Type::key_type *>(key), *static_cast<const typename Type::mapped_type *>(value)).second;

+        }

+    }

+

+    /**

+     * @brief Removes an element from a container.

+     * @param container Opaque pointer to a container of the given type.

+     * @param key An opaque key value of an element to remove.

+     * @return Number of elements removed (either 0 or 1).

+     */

+    [[nodiscard]] static size_type erase(void *container, const void *key) {

+        return static_cast<Type *>(container)->erase(*static_cast<const typename Type::key_type *>(key));

+    }

+

+    /**

+     * @brief Finds an element with a given key.

+     * @param area The context to pass to the newly created iterator.

+     * @param container Opaque pointer to a container of the given type.

+     * @param as_const Const opaque pointer fallback.

+     * @param key Opaque key value of an element to search for.

+     * @return An iterator to the element with the given key, if any.

+     */

+    static iterator find(const meta_ctx &area, void *container, const void *as_const, const void *key) {

+        return container ? iterator{area, std::bool_constant<key_only>{}, static_cast<Type *>(container)->find(*static_cast<const typename Type::key_type *>(key))}

+                         : iterator{area, std::bool_constant<key_only>{}, static_cast<const Type *>(as_const)->find(*static_cast<const typename Type::key_type *>(key))};

+    }

+};

+

+/**

+ * @brief Meta sequence container traits for `std::vector`s of any type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_sequence_container_traits<std::vector<Args...>>

+    : basic_meta_sequence_container_traits<std::vector<Args...>> {};

+

+/**

+ * @brief Meta sequence container traits for `std::array`s of any type.

+ * @tparam Type Template arguments for the container.

+ * @tparam N Template arguments for the container.

+ */

+template<typename Type, auto N>

+struct meta_sequence_container_traits<std::array<Type, N>>

+    : basic_meta_sequence_container_traits<std::array<Type, N>> {};

+

+/**

+ * @brief Meta sequence container traits for `std::list`s of any type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_sequence_container_traits<std::list<Args...>>

+    : basic_meta_sequence_container_traits<std::list<Args...>> {};

+

+/**

+ * @brief Meta sequence container traits for `std::deque`s of any type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_sequence_container_traits<std::deque<Args...>>

+    : basic_meta_sequence_container_traits<std::deque<Args...>> {};

+

+/**

+ * @brief Meta associative container traits for `std::map`s of any type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_associative_container_traits<std::map<Args...>>

+    : basic_meta_associative_container_traits<std::map<Args...>> {};

+

+/**

+ * @brief Meta associative container traits for `std::unordered_map`s of any

+ * type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_associative_container_traits<std::unordered_map<Args...>>

+    : basic_meta_associative_container_traits<std::unordered_map<Args...>> {};

+

+/**

+ * @brief Meta associative container traits for `std::set`s of any type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_associative_container_traits<std::set<Args...>>

+    : basic_meta_associative_container_traits<std::set<Args...>> {};

+

+/**

+ * @brief Meta associative container traits for `std::unordered_set`s of any

+ * type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_associative_container_traits<std::unordered_set<Args...>>

+    : basic_meta_associative_container_traits<std::unordered_set<Args...>> {};

+

+/**

+ * @brief Meta associative container traits for `dense_map`s of any type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_associative_container_traits<dense_map<Args...>>

+    : basic_meta_associative_container_traits<dense_map<Args...>> {};

+

+/**

+ * @brief Meta associative container traits for `dense_set`s of any type.

+ * @tparam Args Template arguments for the container.

+ */

+template<typename... Args>

+struct meta_associative_container_traits<dense_set<Args...>>

+    : basic_meta_associative_container_traits<dense_set<Args...>> {};

+

+} // namespace entt

+

+#endif