basic_format_string.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2023 Tobias Hienzsch
 
#ifndef TETL_FORMAT_BASIC_FORMAT_STRING_HPP
#define TETL_FORMAT_BASIC_FORMAT_STRING_HPP
 
#include <etl/_concepts/convertible_to.hpp>
#include <etl/_string_view/basic_string_view.hpp>
#include <etl/_type_traits/type_identity.hpp>
 
namespace etl {
 
template <typename CharT, typename... Args>
struct basic_format_string {
    template <typename T>
        requires convertible_to<T const&, basic_string_view<CharT>>
    consteval basic_format_string(T const& s)
        : _str(s)
    {
    }
 
    [[nodiscard]] constexpr auto get() const noexcept -> basic_string_view<CharT>
    {
        return _str;
    }
 
private:
    basic_string_view<CharT> _str;
};
 
template <typename... Args>
using format_string = basic_format_string<char, type_identity_t<Args>...>;
 
template <typename... Args>
using wformat_string = basic_format_string<wchar_t, type_identity_t<Args>...>;
 
} // namespace etl
 
#endif // TETL_FORMAT_BASIC_FORMAT_STRING_HPP