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https://github.com/wpilibsuite/allwpilib
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0470e51569
Usage of FMT_STRING() was removed since it caused compilation failures, and https://fmt.dev/11.1/api/#compile-time-checks says it's no longer necessary for compile-time format strings. Fixes #7592.
95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
// Copyright (c) FIRST and other WPILib contributors.
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// Open Source Software; you can modify and/or share it under the terms of
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// the WPILib BSD license file in the root directory of this project.
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#ifndef WPIUTIL_WPI_LOGGER_H_
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#define WPIUTIL_WPI_LOGGER_H_
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#include <functional>
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#include <utility>
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#include <fmt/format.h>
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namespace wpi {
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enum LogLevel {
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WPI_LOG_CRITICAL = 50,
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WPI_LOG_ERROR = 40,
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WPI_LOG_WARNING = 30,
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WPI_LOG_INFO = 20,
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WPI_LOG_DEBUG = 10,
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WPI_LOG_DEBUG1 = 9,
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WPI_LOG_DEBUG2 = 8,
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WPI_LOG_DEBUG3 = 7,
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WPI_LOG_DEBUG4 = 6
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};
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class Logger {
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public:
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using LogFunc = std::function<void(unsigned int level, const char* file,
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unsigned int line, const char* msg)>;
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Logger() = default;
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explicit Logger(LogFunc func) : m_func(std::move(func)) {}
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Logger(LogFunc func, unsigned int min_level)
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: m_func(std::move(func)), m_min_level(min_level) {}
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void SetLogger(LogFunc func) { m_func = func; }
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void set_min_level(unsigned int level) { m_min_level = level; }
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unsigned int min_level() const { return m_min_level; }
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void DoLog(unsigned int level, const char* file, unsigned int line,
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const char* msg);
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void LogV(unsigned int level, const char* file, unsigned int line,
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fmt::string_view format, fmt::format_args args);
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template <typename... Args>
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void Log(unsigned int level, const char* file, unsigned int line,
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fmt::string_view format, Args&&... args) {
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if (m_func && level >= m_min_level) {
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LogV(level, file, line, format, fmt::make_format_args(args...));
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}
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}
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bool HasLogger() const { return m_func != nullptr; }
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private:
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LogFunc m_func;
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unsigned int m_min_level = 20;
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};
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// C++20 relaxed the number of arguments to variadics, but Apple Clang's
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// warnings haven't caught up yet: https://stackoverflow.com/a/67996331
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#ifdef __clang__
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#pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
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#endif
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#define WPI_LOG(logger_inst, level, format, ...) \
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if ((logger_inst).HasLogger() && level >= (logger_inst).min_level()) { \
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(logger_inst) \
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.Log(level, __FILE__, __LINE__, format __VA_OPT__(, ) __VA_ARGS__); \
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}
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#define WPI_ERROR(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_ERROR, format __VA_OPT__(, ) __VA_ARGS__)
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#define WPI_WARNING(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_WARNING, format __VA_OPT__(, ) __VA_ARGS__)
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#define WPI_INFO(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_INFO, format __VA_OPT__(, ) __VA_ARGS__)
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#define WPI_DEBUG(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_DEBUG, format __VA_OPT__(, ) __VA_ARGS__)
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#define WPI_DEBUG1(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_DEBUG1, format __VA_OPT__(, ) __VA_ARGS__)
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#define WPI_DEBUG2(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_DEBUG2, format __VA_OPT__(, ) __VA_ARGS__)
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#define WPI_DEBUG3(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_DEBUG3, format __VA_OPT__(, ) __VA_ARGS__)
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#define WPI_DEBUG4(inst, format, ...) \
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WPI_LOG(inst, ::wpi::WPI_LOG_DEBUG4, format __VA_OPT__(, ) __VA_ARGS__)
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} // namespace wpi
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#endif // WPIUTIL_WPI_LOGGER_H_
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