resizable_container.hxx

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#pragma once
#include <ice/container/container_concepts.hxx>
 
namespace ice::container
{
 
    struct ResizableContainer
    {
        template<ice::concepts::ResizableContainer Self>
        constexpr bool is_full(this Self const& self) noexcept
        {
            return self.size() == self.capacity();
        }
 
        template<ice::concepts::ResizableContainer Self>
        constexpr bool not_full(this Self const& self) noexcept
        {
            return self.size() < self.capacity();
        }
 
        template<ice::concepts::ResizableContainer Self>
        constexpr void reserve(this Self& self, ice::ncount min_capacity) noexcept
        {
            if (self.capacity() < min_capacity)
            {
                self.set_capacity(min_capacity);
            }
        }
 
        template<ice::concepts::ResizableContainer Self>
        constexpr void grow(this Self& self, ice::ncount min_capacity = ice::ncount_none) noexcept
        {
            ice::ncount new_capacity = self.capacity() * 2 + 4;
            if (new_capacity < min_capacity)
            {
                new_capacity = min_capacity;
            }
            self.set_capacity(new_capacity);
        }
 
        template<ice::concepts::ResizableContainer Self>
        constexpr void shrink(this Self& self) noexcept
        {
            self.set_capacity(self.size());
        }
    };
 
} // namespace ice