scrapped

fuck this language honsetly what shit

include/cow.hpp

@@ -27,6 +27,7 @@ struct Cow : public _cow_util::Span<unsigned char> {
 
 	virtual Fake clone() const;
 
+	protected:
 	inline void* area() override { 
 		auto raw = get_raw();
 		return raw ? cow_ptr(raw) : nullptr;
@@ -35,6 +36,7 @@ struct Cow : public _cow_util::Span<unsigned char> {
 		auto raw = get_raw();
 		return raw ? cow_ptr_of(const void, raw) : nullptr;
 	}
+	public:
 
 	/// Get the size of the mapped area.
 	///

include/cow/area.hpp

@@ -5,9 +5,10 @@
 #include <utility>
 
 #include <cow.hpp>
+#include "slice.hpp"
 
 namespace _cow_util {
-	struct Area {
+	struct Area : public Span<unsigned char> {
 		Area() = delete;
 		
 		explicit Area(size_t sz);
@@ -30,7 +31,13 @@ namespace _cow_util {
 
 		inline cow_t* raw() const { return _area->raw(); }
 
+		inline size_t size() const override { return _area->size(); }
+		
 		~Area();
+		protected:
+		inline void* area() override { return _area->ptr(); }
+		inline const void* area() const override { return _area->ptr(); }
+
 		private:
 		const std::unique_ptr<Cow> _area;
 	};

include/cow/slice.hpp

@@ -4,17 +4,19 @@ namespace _cow_util {
 	/// A type that spans a sized region of memory
 	template<typename T>
 	struct Span {
+		protected:
 		virtual const void* area() const =0;
 		virtual void* area() = 0;
+		public:
 		virtual size_t size() const = 0;
 
-		inline T* ptr() { return (T*)area(); }
-		inline const T* ptr() const { return (const T*)area(); }
+		inline T* ptr() { return reinterpret_cast<T*>(area()); }
+		inline const T* ptr() const { return reinterpret_cast<const T*>(area()); }
 
 		inline size_t size_bytes() const { return size() * sizeof(T); }
 
-		inline unsigned char* as_bytes() { return (unsigned char*)area(); }
-		inline const unsigned char* as_bytes() const { return (const unsigned char*)area(); }
+		inline unsigned char* as_bytes() { return area_as<unsigned char>(); }
+		inline const unsigned char* as_bytes() const { return area_as<unsigned char>(); }
 
 		inline T& operator[](size_t index) {
 			if(index >= size()) throw "index out of range";
@@ -38,9 +40,9 @@ namespace _cow_util {
 		inline operator T*() { return &(*this)[0]; }
 
 		template<typename U>
-		inline U* area_as() requires(sizeof(T) % sizeof(U) == 0) { return (U*)area(); }
+		inline U* area_as() requires(sizeof(T) % sizeof(U) == 0) { return reinterpret_cast<U*>(area()); }
 		template<typename U>
-		inline const U* area_as() const requires(sizeof(T) % sizeof(U) == 0) { return (U*)area(); }
+		inline const U* area_as() const requires(sizeof(T) % sizeof(U) == 0) { return reinterpret_cast<const U*>(area()); }
 
 		template<typename U>
 		size_t size_as() const requires(sizeof(T) % sizeof(U) == 0) { return size_bytes() / sizeof(U); }
@@ -89,23 +91,24 @@ namespace _cow_util {
 		inline const Slice slice_wrap(ssize_t len) const { return slice_abs((size_t)wrap_len(len)); }
 
 		template<typename U>
-		inline Span<U>::Slice reinterpret() { return typename Span<U>::Slice((U*)area(), size_bytes() / sizeof(U)); }	
+		inline Span<U>::Slice reinterpret() { return typename Span<U>::Slice(area_as<U>(), size_bytes() / sizeof(U)); }	
 		template<typename U>
-		inline Span<const U>::Slice reinterpret() const { return typename Span<const U>::Slice((const U*)area(), size_bytes() / sizeof(U)); }
+		inline Span<const U>::Slice reinterpret() const { return typename Span<const U>::Slice(area_as<U>(), size_bytes() / sizeof(U)); }
 	};
 
 	/// A slice of memory with a backing pointer and size.
 	template<typename T>
 	struct Span<T>::Slice : public Span<T> {
-		inline Slice(T* ptr, size_t sz) : _area((void*)ptr), _size(sz){}
+		inline Slice(T* ptr, size_t sz) : _area(reinterpret_cast<void*>(ptr)), _size(sz){}
 		inline Slice(const Span<T>& slice) : _area(const_cast<void*>(slice.area())), _size(slice.size()){}
 		inline Slice(const Slice& copy) = default;
 		inline Slice(Slice&& copy) : _area(copy._area), _size(copy._size){ *const_cast<size_t*>(&copy._size) = 0; }
 		Slice() = delete;
 		
+		inline size_t size() const override { return _size; }
+		protected:
 		inline const void* area() const override { return _area; }
 		inline void* area() override { return _area; }
-		inline size_t size() const override { return _size; }
 	
 		private:
 		void* const _area;

include/cow/typed.hpp

@@ -3,6 +3,8 @@
 #include <cow.hpp>
 #include <utility>
 
+XXX: Fuck this. Rewrite to use composition. Inheritance is a comlpete joke.
+
 template<typename T>
 struct TypedCow : private Cow, public _cow_util::Span<T> {
 	struct Fake;
@@ -17,35 +19,44 @@ struct TypedCow : private Cow, public _cow_util::Span<T> {
 	template<typename... Args>
 	inline TypedCow(size_t sz, Args&&... args) : TypedCow(sz) { init_copy( T(std::forward<Args>(args)...) ); }
 
-	inline ~TypedCow() { uninit(); }
+	virtual inline ~TypedCow() { uninit(); }
 
-	inline void* area() { return Cow::area(); }
-	inline const void* area() const { return Cow::area(); }
-	inline size_t size() const override { return Cow::size() / sizeof(T); }
+	inline Cow::Fake clone() const override { return Cow::clone(); }
+	inline Fake clone() const { return Fake(Cow::clone()); }
 
-	inline T& operator[](size_t i) { if (i>=size()) throw "idx"; else return *reinterpret_cast<T*>(this->as_bytes() + (sizeof(T) * i)); }
-	inline const T& operator[](size_t i) const { if (i>=size()) throw "idx"; else return *reinterpret_cast<const T*>(this->as_bytes() + (sizeof(T) * i)); }
+	inline size_t size() const override { return Cow::size() / sizeof(T); }
 	
 	protected:
-	// Should only be used for creating Fakes. Copies the refcounted pointer.
-	inline TypedCow(const TypedCow<T>& copy) : Cow(copy.super) {}
+	inline void* area() override { return Cow::area(); }
+	inline const void* area() const override { return Cow::area(); }
+	//// Should only be used for creating Fakes. Copies the refcounted pointer.
+	//inline TypedCow(const TypedCow<T>& copy) : Cow(copy.super) {}
 
 	// UNSAFE: Placement-new's copys of `copy_from` into `0..size()` of this instance.
 	inline void init_copy(const T& copy_from) {
-		unsigned char* bytes = this->as_bytes();
+		T* ptr = _cow_util::Span<T>::ptr();
 		for(size_t i=0;i<size();i++)
-			new ((void*)(bytes + (sizeof(T)*i))) T(copy_from);
+			new ((void*)(ptr+i)) T(copy_from);
 
 	}
 	// UNSAFE: Explicitly calls destructors of each element in this instance.
 	inline void uninit() {
-		unsigned char* bytes = this->as_bytes();
+		T* ptr = _cow_util::Span<T>::ptr();
 		for(size_t i=0;i<size();i++)
-			reinterpret_cast<T*>(bytes + (sizeof(T)*i))->~T();
+			(ptr+i)->~T();
 	}
 };
 
 template<typename T>
 struct TypedCow<T>::Fake : private Cow::Fake, public _cow_util::Span<T> {
+	Fake() = delete;
+	explicit inline Fake(Cow::Fake&& untyped) : Cow::Fake(untyped){}
+	inline Fake(const Fake& copy) : Fake(copy.Cow::Fake::clone()){}
+	inline Fake(Fake&& move) : Cow::Fake(std::move(move)) {}
+	inline ~Fake(){}
 
+	inline size_t size() const override { return Cow::Fake::size(); }
+	protected:
+	inline const void* area() const override { return Cow::Fake::area(); }
+	inline void* area() override { return Cow::Fake::area(); }
 };

src/test/main.cpp

@@ -147,7 +147,7 @@ namespace Tiling {
 template<typename T = unsigned char>
 void print_slice(Slice<T> memory)
 {
-	printf("slice: { %p, %lu (%lu bytes) }\n", memory.area(), memory.size(), memory.size_bytes());
+	printf("slice: { %p, %lu (%lu bytes) }\n", memory.ptr(), memory.size(), memory.size_bytes());
 
 }
 
@@ -210,7 +210,7 @@ int main()
 	
 	Cow::Fake clone = real;
 	printf("Fake size: %lu\n", clone.size());
-	printf("Fake ptr: %p\n", clone.area());
+	printf("Fake ptr: %p\n", clone.ptr());
 
 	read_fake(clone);
 	write_fake(clone, "hello fake!");