47bd8388c5
Add a small helper for turning root container values into Cell pointers, and use it from RootVector, RootHashTable, and RootHashMap.
38 lines
953 B
C++
38 lines
953 B
C++
/*
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* Copyright (c) 2026, the Ladybird developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibGC/Cell.h>
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#include <LibGC/HeapRoot.h>
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namespace GC::Detail {
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template<typename T>
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struct RootableValueTraits {
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static constexpr bool is_rootable = IsBaseOf<NanBoxedValue, T> || IsConvertible<T, Cell const*>;
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static Cell* cell(T const& value)
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{
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if constexpr (IsBaseOf<NanBoxedValue, T>) {
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if (value.is_cell())
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return &const_cast<T&>(value).as_cell();
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} else if constexpr (IsConvertible<T, Cell const*>) {
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return const_cast<Cell*>(static_cast<Cell const*>(value));
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}
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return nullptr;
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}
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};
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template<typename T>
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static void gather_root(HashMap<Cell*, GC::HeapRoot>& roots, T const& value, HeapRoot::Type root_type)
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{
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if (auto* cell = RootableValueTraits<T>::cell(value))
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roots.set(cell, HeapRoot { .type = root_type });
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}
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}
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