xo-numeric/xo-alloc2/include/xo/alloc2/alloc/AAllocIterator.hpp

45 lines
1.4 KiB
C++

/** @file AAllocIterator.hpp
*
* @author Roland Conybeare, Dec 2025
**/
#pragma once
#include "AllocInfo.hpp"
#include "cmpresult.hpp"
#include "typeseq.hpp"
#include <xo/facet/obj.hpp>
namespace xo {
namespace mm {
using Copaque = const void *;
using Opaque = void *;
/** @class AAllocIterator
* @brief Abstract facet for iterating over allocs
*
* Iterator refers to an AllocInfo instance
* Only supporting forward-allocator.
**/
struct AAllocIterator {
using obj_AAllocIterator = xo::facet::obj<AAllocIterator>;
using typeseq = xo::reflect::typeseq;
/** @defgroup mm-allociterator-methods AllocIterator methods **/
///@{
/** RTTI: unique id# for actual runtime *data* representation **/
virtual typeseq _typeseq() const noexcept = 0;
/** retrieve AllocInfo for current iterator position
**/
virtual AllocInfo deref(Copaque d) const noexcept = 0;
/** compare alloc iterators @p d and @p other **/
virtual cmpresult compare(Copaque d,
const obj_AAllocIterator & other) const noexcept = 0;
/** advance iterator to next position **/
virtual void next(Opaque d) const noexcept = 0;
///@}
};
} /*namespace mm*/
} /*namespace xo*/
/* end AAllocIterator.hpp */