to_string.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2021 Tobias Hienzsch
 
#ifndef TETL_STRING_TO_STRING_HPP
#define TETL_STRING_TO_STRING_HPP
 
#include <etl/_contracts/check.hpp>
#include <etl/_iterator/data.hpp>
#include <etl/_string/basic_inplace_string.hpp>
#include <etl/_strings/from_integer.hpp>
 
namespace etl {
 
namespace detail {
 
template <etl::size_t Capacity, typename Int>
constexpr auto to_string(Int val) -> etl::inplace_string<Capacity>
{
    char buffer[Capacity]{};
    auto const res = etl::strings::from_integer<Int>(val, etl::data(buffer), Capacity, 10);
    TETL_PRECONDITION(res.error == etl::strings::from_integer_error::none);
    return etl::inplace_string<Capacity>{etl::data(buffer), res.end};
}
 
} // namespace detail
 
/// \brief Converts a numeric value to etl::inplace_string.
template <etl::size_t Capacity>
[[nodiscard]] constexpr auto to_string(int value) noexcept -> etl::inplace_string<Capacity>
{
    return etl::detail::to_string<Capacity, int>(value);
}
 
/// \brief Converts a numeric value to etl::inplace_string.
template <etl::size_t Capacity>
[[nodiscard]] constexpr auto to_string(long value) noexcept -> etl::inplace_string<Capacity>
{
    return etl::detail::to_string<Capacity, long>(value);
}
 
/// \brief Converts a numeric value to etl::inplace_string.
template <etl::size_t Capacity>
[[nodiscard]] constexpr auto to_string(long long value) noexcept -> etl::inplace_string<Capacity>
{
    return etl::detail::to_string<Capacity, long long>(value);
}
 
/// \brief Converts a numeric value to etl::inplace_string.
template <etl::size_t Capacity>
[[nodiscard]] constexpr auto to_string(unsigned value) noexcept -> etl::inplace_string<Capacity>
{
    return etl::detail::to_string<Capacity, unsigned>(value);
}
 
/// \brief Converts a numeric value to etl::inplace_string.
template <etl::size_t Capacity>
[[nodiscard]] constexpr auto to_string(unsigned long value) noexcept -> etl::inplace_string<Capacity>
{
    return etl::detail::to_string<Capacity, unsigned long>(value);
}
 
/// \brief Converts a numeric value to etl::inplace_string.
template <etl::size_t Capacity>
[[nodiscard]] constexpr auto to_string(unsigned long long value) noexcept -> etl::inplace_string<Capacity>
{
    return etl::detail::to_string<Capacity, unsigned long long>(value);
}
 
} // namespace etl
 
#endif // TETL_STRING_TO_STRING_HPP