add settings reset

libs/include/entt/meta/resolve.hpp

@@ -0,0 +1,102 @@
+#ifndef ENTT_META_RESOLVE_HPP
+#define ENTT_META_RESOLVE_HPP
+
+#include <type_traits>
+#include "../core/type_info.hpp"
+#include "../locator/locator.hpp"
+#include "context.hpp"
+#include "meta.hpp"
+#include "node.hpp"
+#include "range.hpp"
+
+namespace entt {
+
+/**
+ * @brief Returns the meta type associated with a given type.
+ * @tparam Type Type to use to search for a meta type.
+ * @param ctx The context from which to search for meta types.
+ * @return The meta type associated with the given type, if any.
+ */
+template<typename Type>
+[[nodiscard]] meta_type resolve(const meta_ctx &ctx) noexcept {
+    auto &&context = internal::meta_context::from(ctx);
+    return {ctx, internal::resolve<std::remove_cv_t<std::remove_reference_t<Type>>>(context)};
+}
+
+/**
+ * @brief Returns the meta type associated with a given type.
+ * @tparam Type Type to use to search for a meta type.
+ * @return The meta type associated with the given type, if any.
+ */
+template<typename Type>
+[[nodiscard]] meta_type resolve() noexcept {
+    return resolve<Type>(locator<meta_ctx>::value_or());
+}
+
+/**
+ * @brief Returns a range to use to visit all meta types.
+ * @param ctx The context from which to search for meta types.
+ * @return An iterable range to use to visit all meta types.
+ */
+[[nodiscard]] inline meta_range<meta_type, typename decltype(internal::meta_context::value)::const_iterator> resolve(const meta_ctx &ctx) noexcept {
+    auto &&context = internal::meta_context::from(ctx);
+    return {{ctx, context.value.cbegin()}, {ctx, context.value.cend()}};
+}
+
+/**
+ * @brief Returns a range to use to visit all meta types.
+ * @return An iterable range to use to visit all meta types.
+ */
+[[nodiscard]] inline meta_range<meta_type, typename decltype(internal::meta_context::value)::const_iterator> resolve() noexcept {
+    return resolve(locator<meta_ctx>::value_or());
+}
+
+/**
+ * @brief Returns the meta type associated with a given identifier, if any.
+ * @param ctx The context from which to search for meta types.
+ * @param id Unique identifier.
+ * @return The meta type associated with the given identifier, if any.
+ */
+[[nodiscard]] inline meta_type resolve(const meta_ctx &ctx, const id_type id) noexcept {
+    for(auto &&curr: resolve(ctx)) {
+        if(curr.second.id() == id) {
+            return curr.second;
+        }
+    }
+
+    return meta_type{};
+}
+
+/**
+ * @brief Returns the meta type associated with a given identifier, if any.
+ * @param id Unique identifier.
+ * @return The meta type associated with the given identifier, if any.
+ */
+[[nodiscard]] inline meta_type resolve(const id_type id) noexcept {
+    return resolve(locator<meta_ctx>::value_or(), id);
+}
+
+/**
+ * @brief Returns the meta type associated with a given type info object.
+ * @param ctx The context from which to search for meta types.
+ * @param info The type info object of the requested type.
+ * @return The meta type associated with the given type info object, if any.
+ */
+[[nodiscard]] inline meta_type resolve(const meta_ctx &ctx, const type_info &info) noexcept {
+    auto &&context = internal::meta_context::from(ctx);
+    const auto *elem = internal::try_resolve(context, info);
+    return elem ? meta_type{ctx, *elem} : meta_type{};
+}
+
+/**
+ * @brief Returns the meta type associated with a given type info object.
+ * @param info The type info object of the requested type.
+ * @return The meta type associated with the given type info object, if any.
+ */
+[[nodiscard]] inline meta_type resolve(const type_info &info) noexcept {
+    return resolve(locator<meta_ctx>::value_or(), info);
+}
+
+} // namespace entt
+
+#endif