[ox/std] Reduce AnyPtr to 2/3 the size

deps/ox/src/ox/std/anyptr.hpp

@@ -22,7 +22,7 @@ class AnyPtrT {
 	private:
 		struct WrapBase {
 			virtual constexpr ~WrapBase() = default;
-			virtual constexpr WrapBase *copyTo(ox::Span<char> s) noexcept = 0;
+			virtual constexpr WrapBase *copyTo(Span<char> s) const noexcept = 0;
 			virtual constexpr operator bool() const noexcept = 0;
 			virtual void free() noexcept = 0;
 		};
@@ -32,7 +32,7 @@ class AnyPtrT {
 			T *data{};
 			explicit constexpr Wrap(T *pData) noexcept: data(pData) {
 			}
-			constexpr WrapBase *copyTo(ox::Span<char> s) noexcept override {
+			constexpr WrapBase *copyTo(Span<char> s) const noexcept override {
 				oxAssert(s.size() >= sizeof(Wrap), "too small buffer");
 				if (std::is_constant_evaluated()) {
 					return new Wrap(data);
@@ -49,8 +49,10 @@ class AnyPtrT {
 			}
 		};
 
+		union {
 			WrapBase *m_wrapPtr{};
-		ox::Array<char, sizeof(Wrap<void*>)> m_wrapData;
+			AllocAlias<Wrap<void*>> m_wrapData;
+		} m_data;
 
 	public:
 		constexpr AnyPtrT() noexcept = default;
@@ -58,25 +60,25 @@ class AnyPtrT {
 		template<typename T>
 		constexpr AnyPtrT(T *ptr) noexcept {
 			if (std::is_constant_evaluated()) {
-				m_wrapPtr = new Wrap<T>(ptr);
+				setWrapPtr(new Wrap<T>(ptr));
 			} else {
-				m_wrapPtr = new(m_wrapData.data()) Wrap<T>(ptr);
+				new(m_data.m_wrapData.data()) Wrap<T>(ptr);
 			}
 		}
 
-		constexpr AnyPtrT(AnyPtrT const&other) noexcept requires(!unique) {
+		constexpr AnyPtrT(AnyPtrT const &other) noexcept requires(!unique) {
 			if (other) {
-				m_wrapPtr = other.m_wrapPtr->copyTo(m_wrapData);
+				setWrapPtr(other.getWrapPtr()->copyTo(m_data.m_wrapData.buff));
 			}
 		}
 
 		constexpr AnyPtrT(AnyPtrT &&other) noexcept {
 			if (other) {
-				m_wrapPtr = other.m_wrapPtr->copyTo(m_wrapData);
+				setWrapPtr(other.getWrapPtr()->copyTo(m_data.m_wrapData.buff));
 				if (std::is_constant_evaluated()) {
-					ox::safeDelete(m_wrapPtr);
+					ox::safeDelete(m_data.m_wrapPtr);
 				}
-				other.m_wrapPtr = {};
+				m_data.m_wrapData = {};
 			}
 		}
 
@@ -85,7 +87,7 @@ class AnyPtrT {
 				free();
 			}
 			if (std::is_constant_evaluated()) {
-				ox::safeDelete(m_wrapPtr);
+				ox::safeDelete(m_data.m_wrapPtr);
 			}
 		}
 
@@ -94,25 +96,31 @@ class AnyPtrT {
 			if constexpr(unique) {
 				free();
 			} else if (std::is_constant_evaluated()) {
-				ox::safeDelete(m_wrapPtr);
+				ox::safeDelete(m_data.m_wrapPtr);
 			}
 			if (std::is_constant_evaluated()) {
-				m_wrapPtr = new Wrap(ptr);
+				setWrapPtr(new Wrap(ptr));
 			} else {
-				m_wrapPtr = new(m_wrapData.data()) Wrap(ptr);
+				new(m_data.m_wrapData.data()) Wrap(ptr);
 			}
 			return *this;
 		}
 
-		constexpr AnyPtrT &operator=(AnyPtrT const&ptr) noexcept requires(!unique) {
+		constexpr AnyPtrT &operator=(AnyPtrT const &ptr) noexcept requires(!unique) {
 			if (this != &ptr) {
 				if (std::is_constant_evaluated()) {
-					ox::safeDelete(m_wrapPtr);
+					ox::safeDelete(m_data.m_wrapPtr);
 				}
+				if (std::is_constant_evaluated()) {
 					if (ptr) {
-					m_wrapPtr = ptr.m_wrapPtr->copyTo(m_wrapData);
+						ptr.getWrapPtr()->copyTo(m_data.m_wrapData.buff);
+					}
 				} else {
-					m_wrapPtr = nullptr;
+					if (ptr) {
+						setWrapPtr(ptr.getWrapPtr()->copyTo(m_data.m_wrapData.buff));
+					} else {
+						setWrapPtr(nullptr);
+					}
 				}
 			}
 			return *this;
@@ -123,43 +131,65 @@ class AnyPtrT {
 				if constexpr(unique) {
 					free();
 				} else if (std::is_constant_evaluated()) {
-					ox::safeDelete(m_wrapPtr);
+					ox::safeDelete(m_data.m_wrapPtr);
 				}
 				if (ptr) {
-					m_wrapPtr = ptr.m_wrapPtr->copyTo(m_wrapData);
+					setWrapPtr(ptr.getWrapPtr()->copyTo(m_data.m_wrapData.buff));
 					if (std::is_constant_evaluated()) {
-						ox::safeDelete(ptr.m_wrapPtr);
+						ox::safeDelete(ptr.m_data.m_wrapPtr);
-						ptr.m_wrapPtr = nullptr;
+						setWrapPtr(nullptr);
 					}
 				} else {
-					m_wrapPtr = nullptr;
+					m_data = {};
 				}
 			}
 			return *this;
 		}
 
 		constexpr operator bool() const noexcept {
-			return m_wrapPtr && *m_wrapPtr;
+			return getWrapPtr() && *getWrapPtr();
 		}
 
 		constexpr void free() noexcept {
-			if (m_wrapPtr) {
+			if (auto p = getWrapPtr()) {
-				m_wrapPtr->free();
+				p->free();
 			}
 			if (std::is_constant_evaluated()) {
-				ox::safeDelete(m_wrapPtr);
+				ox::safeDelete(m_data.m_wrapPtr);
 			}
-			m_wrapPtr = nullptr;
+			m_data.m_wrapData = {};
 		}
 
 		template<typename T>
 		[[nodiscard]]
 		constexpr T *get() const noexcept {
-#ifdef OX_BARE_METAL
+			if constexpr(defines::HasRTTI) {
-			return static_cast<Wrap<T>*>(m_wrapPtr)->data;
+				return dynamic_cast<Wrap<T> const*>(getWrapPtr())->data;
-#else
+			}
-			return dynamic_cast<Wrap<T>*>(m_wrapPtr)->data;
+			return static_cast<Wrap<T> const*>(getWrapPtr())->data;
-#endif
+		}
+
+	private:
+		constexpr void setWrapPtr(WrapBase *ptr) noexcept {
+			if (std::is_constant_evaluated()) {
+				m_data.m_wrapPtr = ptr;
+			}
+		}
+
+		constexpr WrapBase *getWrapPtr() noexcept {
+			if (std::is_constant_evaluated()) {
+				return m_data.m_wrapPtr;
+			} else {
+				return std::launder(reinterpret_cast<WrapBase*>(m_data.m_wrapData.data()));
+			}
+		}
+
+		constexpr WrapBase const *getWrapPtr() const noexcept {
+			if (std::is_constant_evaluated()) {
+				return m_data.m_wrapPtr;
+			} else {
+				return std::launder(reinterpret_cast<WrapBase const*>(m_data.m_wrapData.data()));
+			}
 		}
 
 };

deps/ox/src/ox/std/defines.hpp

@@ -53,6 +53,12 @@ constexpr auto NDebug = true;
 constexpr auto NDebug = false;
 #endif
 
+#if defined(OX_BARE_METAL)
+constexpr auto HasRTTI = false;
+#else
+constexpr auto HasRTTI = true;
+#endif
+
 #if defined(__BIG_ENDIAN__)
 constexpr auto BigEndian = true;
 constexpr auto LittleEndian = false;