clone.h

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#pragma once
 
#include "di/container/concepts/prelude.h"
#include "di/container/meta/prelude.h"
#include "di/container/view/all.h"
#include "di/container/view/transform.h"
#include "di/function/pipeable.h"
#include "di/meta/language.h"
#include "di/util/clone.h"
#include "di/util/forward.h"
 
namespace di::container::view {
namespace detail {
    struct CloneFunction : function::pipeline::EnablePipeline {
        template<concepts::ViewableContainer Con, typename Value = meta::ContainerReference<Con>>
        requires(!concepts::LValueReference<Value> || concepts::Clonable<Value>)
        constexpr auto operator()(Con&& container) const -> concepts::View auto {
            if constexpr (!concepts::LValueReference<Value>) {
                return all(util::forward<Con>(container));
            } else {
                return transform(util::forward<Con>(container), util::clone);
            }
        }
    };
}
 
constexpr inline auto clone = detail::CloneFunction {};
}