/** @file IAllocIterator_DArenaIterator.cpp
 *
 *  @author Roland Conybeare, Dec 2025
 **/

#include "arena/IAllocIterator_DArenaIterator.hpp"
#include "AllocIterator.hpp"
#include <xo/indentlog/scope.hpp>
#include <cassert>

namespace xo {
    using std::byte;

    namespace mm {
        AllocInfo
        IAllocIterator_DArenaIterator::deref(const DArenaIterator & ix) noexcept
        {
            return ix.deref();
        }

        cmpresult
        IAllocIterator_DArenaIterator::compare(const DArenaIterator & ix,
                                               const obj<AAllocIterator> & other_arg) noexcept
        {
            scope log(XO_DEBUG(false),
                      xtag("&ix", &ix),
                      xtag("ix.arena", ix.arena_), xtag("ix.pos", ix.pos_));

            /* downcast from variant */
            auto other = obj<AAllocIterator, DArenaIterator>::from(other_arg);

            if (!other)
                return cmpresult::incomparable();

            DArenaIterator & other_ix = *other.data();

            log && log(xtag("&other_ix", &other_ix),
                       xtag("other_ix.arena", other_ix.arena_),
                       xtag("other_ix.pos", other_ix.pos_));

            return ix.compare(other_ix);
        }

        void
        IAllocIterator_DArenaIterator::next(DArenaIterator & ix) noexcept
        {
            ix.next();
        }
    } /*namespace mm*/
} /*namespace xo*/

/* end IAllocIterator_DArenaIterator.cpp */