gplib/include/gp/array.hpp

#pragma once

#include <gp/buffer.hpp>

#include <initializer_list>

namespace gp{
	template<typename T, std::size_t sz>
	class array{
	public:
		T ary[sz];
		using associated_iterator = pointer_iterator<T, 1>;
		using associated_const_iterator = const_pointer_iterator<T, 1>;
		using associated_riterator = pointer_iterator<T, -1>;
		using associated_const_riterator = const_pointer_iterator<T, -1>;

		constexpr T& operator[] (size_t off)
		{
			if constexpr (gp_config::has_buffer_bounds)
			{
				gp_config::assertion(
					off < sz,
					"Array bounds infringed"
				);
			}
			return ary[off];
		}

		constexpr const T& operator[] (size_t off) const
		{
			return ary[off];
		}

		constexpr size_t size() const
		{
			return sz;
		}

		constexpr pointer_iterator<T, 1> begin()
		{
			return associated_iterator(&ary[0]);
		}

		constexpr pointer_iterator<T, 1> end()
		{
			return associated_iterator(&ary[sz]);
		}

		constexpr const_pointer_iterator<T, 1> cbegin() const
		{
			return associated_const_iterator(&ary[0]);
		}

		constexpr const_pointer_iterator<T, 1> cend() const
		{
			return associated_const_iterator(&ary[sz]);
		}

		constexpr pointer_iterator<T, -1> rbegin()
		{
			return associated_riterator(&ary[sz-1]);
		}

		constexpr pointer_iterator<T, -1> rend()
		{
			return associated_riterator(ary-1);
		}

		constexpr const_pointer_iterator<T, -1> crbegin() const
		{
			return associated_const_riterator(&ary[sz-1]);
		}

		constexpr const_pointer_iterator<T, -1> crend() const
		{
			return associated_const_riterator(ary-1);
		}

		constexpr bool operator==(const array& oth) const
		{
			for(size_t idx = 0; idx<sz; idx++)
			{
				if(ary[idx] != oth.ary[idx])
				{
					return false;
				}
			}
			return true;
		}

		constexpr bool operator!=(const array& oth) const
		{
			return !(*this == oth);
		}

		gp::buffer<T> as_buffer()
		{
			return gp::buffer<T>{(T*)ary, (T*)ary+sz};
		}
	};
}