log_level.hpp

// Copyright Take Vos 2019-2021.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "assert.hpp"
#include <atomic>
#include <cstdint>
#include <string_view>
 
namespace tt {
 
enum class log_level : uint8_t {
    debug = 0x01,
    info = 0x02,
    statistics = 0x04,
    trace = 0x08,
    audit = 0x10,
    warning = 0x20,
    error = 0x40,
    fatal = 0x80
};
 
[[nodiscard]] constexpr log_level operator&(log_level const &lhs, log_level const &rhs) noexcept
{
    return static_cast<log_level>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
}
 
[[nodiscard]] constexpr log_level operator|(log_level const &lhs, log_level const &rhs) noexcept
{
    return static_cast<log_level>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
}
 
constexpr log_level &operator|=(log_level &lhs, log_level const &rhs) noexcept
{
    lhs = lhs | rhs;
    return lhs;
}
 
[[nodiscard]] log_level make_log_level(log_level user_level) noexcept;
 
char const *to_const_string(log_level level) noexcept;
 
int command_line_argument_to_log_level(std::string_view str);
 
inline std::atomic<log_level> log_level_global = make_log_level(log_level::error);
 
}