68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
/** @file IAllocator_Any.hpp
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*
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* @author Roland Conybeare, Dec 2025
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**/
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#pragma once
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#include "AAllocator.hpp"
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#include "AllocIterator.hpp"
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#include <xo/facet/obj.hpp>
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namespace xo {
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namespace mm { struct IAllocator_Any; }
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namespace facet {
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template <>
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struct FacetImplementation<xo::mm::AAllocator, DVariantPlaceholder> {
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using ImplType = xo::mm::IAllocator_Any;
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};
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}
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namespace mm {
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/** @class IAllocator_Any
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* @brief Allocator implementation for empty variant instance.
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**/
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struct IAllocator_Any : public AAllocator {
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//using Impl = IAllocator_ImplType<xo::facet::DVariantPlaceholder>;
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using size_type = std::size_t;
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const AAllocator * iface() const { return std::launder(this); }
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// from AAllocator
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int32_t _typeseq() const noexcept override { return s_typeseq; }
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// const methods
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[[noreturn]] std::string_view name(Copaque) const noexcept override { _fatal(); }
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[[noreturn]] size_type reserved(Copaque) const noexcept override { _fatal(); }
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[[noreturn]] size_type size(Copaque) const noexcept override { _fatal(); }
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[[noreturn]] size_type committed(Copaque) const noexcept override { _fatal(); }
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[[noreturn]] size_type available(Copaque) const noexcept override { _fatal(); }
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[[noreturn]] size_type allocated(Copaque) const noexcept override { _fatal(); }
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[[noreturn]] bool contains(Copaque, const void *) const noexcept override { _fatal(); }
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[[noreturn]] AllocError last_error(Copaque) const noexcept override { _fatal(); }
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[[noreturn]] AllocInfo alloc_info(Copaque, value_type) const noexcept override { _fatal(); }
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// defn in .cpp - problematic to require compiler know vt<AAllocIterator> defn here
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//[[noreturn]] facet::vt<AAllocIterator> begin(Copaque, DArena &) const noexcept override; // { _fatal(); }
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[[noreturn]] range_type alloc_range(Copaque, DArena &) const noexcept override { _fatal(); }
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// non-const methods
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[[noreturn]] bool expand(Opaque, std::size_t) const noexcept override { _fatal(); }
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[[noreturn]] value_type alloc(Opaque, std::size_t) const override { _fatal(); }
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[[noreturn]] value_type super_alloc(Opaque, std::size_t) const override { _fatal(); }
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[[noreturn]] value_type sub_alloc(Opaque, std::size_t, bool) const override { _fatal(); }
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[[noreturn]] void clear(Opaque) const override { _fatal(); }
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[[noreturn]] void destruct_data(Opaque) const override { _fatal(); }
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private:
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[[noreturn]] static void _fatal();
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public:
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static int32_t s_typeseq;
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static bool _valid;
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};
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}
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}
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/* end IAllocator_Any.hpp */
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