xo-umbrella2/xo-alloc2/include/xo/alloc2/alloc/RAllocIterator.hpp

/** @file RAllocIterator.hpp
 *
 *  @author Roland Conybeare, Dec 2025
 **/

#include "AAllocIterator.hpp"
#include <xo/facet/RRouter.hpp>
//#include <string>

namespace xo {
    namespace mm {
        /* @class RAllocIterator */
        template <typename Object>
        struct RAllocIterator : public Object {
        private:
            using O = Object;
        public:
            using ObjectType = Object;
            using DataPtr = Object::DataPtr;
            using typeseq = xo::reflect::typeseq;

            RAllocIterator() {}
            RAllocIterator(Object::DataPtr data) : Object{std::move(data)} {}

            typeseq _typeseq() const noexcept { return O::iface()->_typeseq(); }
            AllocInfo deref() const noexcept { return O::iface()->deref(O::data()); }
            cmpresult compare(const obj<AAllocIterator> & other) const noexcept {
                return O::iface()->compare(O::data(), other); }
            void next() noexcept { O::iface()->next(O::data()); }

            AllocInfo operator*() const noexcept { return deref(); }

            /** triggers operator++ in obj<RAllocIterator<Object>> **/
            void _preincrement() noexcept { this->next(); }

            static bool _valid;
        };

        template <typename Object>
        bool
        RAllocIterator<Object>::_valid = facet::valid_object_router<Object>();
    } /*namespace mm*/

    namespace facet {
        template <typename Object>
        struct RoutingFor<xo::mm::AAllocIterator, Object> {
            using RoutingType = xo::mm::RAllocIterator<Object>;
        };

        /* also provide comparison */
        template <typename DRepr1, typename DRepr2>
        inline bool operator==(obj<xo::mm::AAllocIterator, DRepr1> lhs,
                               obj<xo::mm::AAllocIterator, DRepr2> rhs)
        {
            return lhs.compare(rhs).is_equal();
        }

        template <typename DRepr1, typename DRepr2>
        inline bool operator!=(obj<xo::mm::AAllocIterator, DRepr1> lhs,
                               obj<xo::mm::AAllocIterator, DRepr2> rhs)
        {
            return !lhs.compare(rhs).is_equal();
        }
    }
} /*namespace xo*/

/* end RAllocIterator.hpp */