From 57ed5d979fa8b18b0b4a319b68b18456dcc5de57 Mon Sep 17 00:00:00 2001
From: rexy712 <rexerton.rexy@tutamail.com>
Date: Tue, 17 Sep 2019 17:29:50 -0700
Subject: [PATCH] Added basic layout of raii::binary

---
 include/raii/binary.hpp | 116 ++++++++++++++++++++++++++++++++++++++++
 src/raii/binary.cpp     |  19 +++++++
 2 files changed, 135 insertions(+)
 create mode 100644 include/raii/binary.hpp
 create mode 100644 src/raii/binary.cpp

diff --git a/include/raii/binary.hpp b/include/raii/binary.hpp
new file mode 100644
index 0000000..278bbb2
--- /dev/null
+++ b/include/raii/binary.hpp
@@ -0,0 +1,116 @@
+#ifndef RAII_BINARY_HPP
+#define RAII_BINARY_HPP
+
+#include <cstdlib> //size_t
+#include <utility> //move
+#include <cstring> //memcpy
+#include <new>
+
+namespace raii{
+
+	namespace detail{
+
+		template<size_t Alignment>
+		struct default_binary_allocator{
+			static void free(void* data){
+				::operator delete(data);
+			}
+			static void* allocate(size_t size){
+				return ::operator new(size, std::align_val_t(Alignment));
+			}
+			static void* copy(const void* c, size_t size){
+				char* tmp = reinterpret_cast<char*>(allocate(size));
+				memcpy(tmp, c, size);
+				return tmp;
+			}
+		};
+
+	}
+
+	class binary_base
+	{
+	protected:
+		char* m_data = nullptr;
+		size_t m_size = 0;
+		size_t m_cap = 0;
+	public:
+		constexpr binary_base(void) = default;
+		constexpr binary_base(char* data, size_t size):
+			m_data(data), m_size(size){}
+	protected:
+		template<class Allocator>
+		binary_base(const binary_base& b):
+			m_data(Allocator::copy(b.m_data, b.m_cap)),
+			m_size(b.m_size),
+			m_cap(b.m_cap){}
+		binary_base(binary_base&&);
+	public:
+		~binary_base(void) = default;
+
+		char* release(void);
+
+		constexpr size_t size(void)const{return m_size;}
+		constexpr size_t capacity(void)const{return m_cap;}
+		constexpr char* get(void){return m_data;}
+		constexpr const char* get(void)const{return m_data;}
+		constexpr operator bool(void)const{return m_data;}
+
+		char& operator[](size_t i);
+		const char& operator[](size_t i)const;
+
+	};
+	template<class Allocator = detail::default_binary_allocator<0>>
+	class binary : public binary_base
+	{
+	public:
+		constexpr binary(void) = default;
+		binary(char* data, size_t size):
+			binary_base(Allocator::copy(data, size), size){}
+		binary(size_t size):
+			binary_base(Allocator::allocate(size), size){}
+		binary(const binary& b):
+			binary_base(b)
+		{
+			m_data = Allocator::copy(b.m_data, b.m_cap);
+		}
+		binary(binary&& b):
+			binary_base(std::move(b)){}
+		~binary(void){
+			Allocator::free(m_data);
+		}
+		binary& operator=(const binary& b){
+			binary tmp(b);
+			return (*this = std::move(tmp));
+		}
+		binary& operator=(binary&& b){
+			m_size = b.m_size;
+			m_cap = b.m_cap;
+			std::swap(m_data, b.m_data);
+			return *this;
+		}
+		void reset(void){
+			Allocator::free(m_data);
+			m_data = nullptr;
+			m_cap = m_size = 0;
+		}
+		void reset(char* val, size_t cap, size_t size = 0){
+			Allocator::free(m_data);
+			m_data = val;
+			m_cap = cap;
+			m_size = size;
+		}
+		bool resize(size_t newsize){
+			if(newsize < m_cap)
+				return false;
+			binary tmp(newsize);
+			if(!tmp)
+				return false;
+			memcpy(tmp.m_data, m_data, m_size);
+			*this = std::move(tmp);
+			return true;
+		}
+	};
+
+}
+
+#endif
diff --git a/src/raii/binary.cpp b/src/raii/binary.cpp
new file mode 100644
index 0000000..c7c4dac
--- /dev/null
+++ b/src/raii/binary.cpp
@@ -0,0 +1,19 @@
+#include "raii/binary.hpp"
+
+namespace raii{
+
+	binary_base::binary_base(binary_base&& b):
+		m_data(std::exchange(b.m_data, nullptr)),
+		m_size(b.m_size),
+		m_cap(b.m_cap){}
+
+	char* binary_base::release(void){
+		return std::exchange(m_data, nullptr);
+	}
+	char& binary_base::operator[](size_t i){
+		return m_data[i];
+	}
+	const char& binary_base::operator[](size_t i)const{
+		return m_data[i];
+	}
+}