uninitialized_fill.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2024 Tobias Hienzsch
 
#ifndef TETL_MEMORY_UNINITIALIZED_FILL_HPP
#define TETL_MEMORY_UNINITIALIZED_FILL_HPP
 
#include <etl/_iterator/iterator_traits.hpp>
#include <etl/_memory/addressof.hpp>
#include <etl/_memory/construct_at.hpp>
 
namespace etl {
 
template <typename ForwardIt, typename T>
constexpr auto uninitialized_fill(ForwardIt first, ForwardIt last, T const& value) -> void
{
#if defined(__cpp_exceptions)
    auto current = first;
    try {
        for (; current != last; ++current) {
            etl::construct_at(current, value);
        }
    } catch (...) {
        using ValueType = typename etl::iterator_traits<ForwardIt>::value_type;
        for (; first != current; ++first) {
            first->~ValueType();
        }
        throw;
    }
#else
    for (auto current = first; current != last; ++current) {
        etl::construct_at(current, value);
    }
#endif
}
 
} // namespace etl
 
#endif // TETL_MEMORY_UNINITIALIZED_FILL_HPP