diff options
| 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/core/monostate.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/core/monostate.hpp')
| -rw-r--r-- | deps/include/entt/core/monostate.hpp | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/deps/include/entt/core/monostate.hpp b/deps/include/entt/core/monostate.hpp new file mode 100644 index 0000000..57f5f41 --- /dev/null +++ b/deps/include/entt/core/monostate.hpp @@ -0,0 +1,60 @@ +#ifndef ENTT_CORE_MONOSTATE_HPP
+#define ENTT_CORE_MONOSTATE_HPP
+
+#include "../config/config.h"
+#include "fwd.hpp"
+
+namespace entt {
+
+/**
+ * @brief Minimal implementation of the monostate pattern.
+ *
+ * A minimal, yet complete configuration system built on top of the monostate
+ * pattern. Thread safe by design, it works only with basic types like `int`s or
+ * `bool`s.<br/>
+ * Multiple types and therefore more than one value can be associated with a
+ * single key. Because of this, users must pay attention to use the same type
+ * both during an assignment and when they try to read back their data.
+ * Otherwise, they can incur in unexpected results.
+ */
+template<id_type>
+struct monostate {
+ /**
+ * @brief Assigns a value of a specific type to a given key.
+ * @tparam Type Type of the value to assign.
+ * @param val User data to assign to the given key.
+ * @return This monostate object.
+ */
+ template<typename Type>
+ monostate &operator=(Type val) noexcept {
+ value<Type> = val;
+ return *this;
+ }
+
+ /**
+ * @brief Gets a value of a specific type for a given key.
+ * @tparam Type Type of the value to get.
+ * @return Stored value, if any.
+ */
+ template<typename Type>
+ operator Type() const noexcept {
+ return value<Type>;
+ }
+
+private:
+ template<typename Type>
+ // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+ inline static ENTT_MAYBE_ATOMIC(Type) value{};
+};
+
+/**
+ * @brief Helper variable template.
+ * @tparam Value Value used to differentiate between different variables.
+ */
+template<id_type Value>
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+inline monostate<Value> monostate_v{};
+
+} // namespace entt
+
+#endif
|