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tamaas/src/core/logger.hh
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2022 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef LOGGER_HH
#define LOGGER_HH
/* -------------------------------------------------------------------------- */
#include "tamaas.hh"
#include <sstream>
/* -------------------------------------------------------------------------- */
namespace tamaas {
/* -------------------------------------------------------------------------- */
/// Log levels enumeration
enum class LogLevel { debug = 0, info = 1, warning = 2, error = 3 };
/**
@brief Logging class
Inspired from https://www.drdobbs.com/cpp/logging-in-c/201804215
by Petru Marginean.
*/
class Logger {
public:
/// Writing to stderr
~Logger() noexcept;
/// Get stream
std::ostream& get(LogLevel level = LogLevel::debug);
/// Get wish log level
decltype(auto) getWishLevel() const { return wish_level; }
/// Get current log level
static decltype(auto) getCurrentLevel() { return current_level; }
/// Set acceptable logging level
static void setLevel(LogLevel level);
private:
static LogLevel current_level;
std::ostringstream stream;
LogLevel wish_level = LogLevel::debug;
};
/* -------------------------------------------------------------------------- */
} // namespace tamaas
#endif // LOGGER_HH
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