//---------------------------------------------------------------------------//
//  1100101 |_ mov #0, r4         __                                         //
//     11   |_ <0xb380 %5c4>     / _|_ _____ ___                             //
//     0110 |_ 3.50 -> 3.60     |  _\ \ / _ (_-<                             //
//          |_ base# + offset   |_| /_\_\___/__/                             //
//---------------------------------------------------------------------------//
// fxos/util/log: Basic logging utilities
//
// This header exposes a single macro
//    FxOS_log(LEVEL, FORMAT, ...)
// where LEVEL should be "LOG", "WRN" or "ERR", FORMAT is a printf()-style
// format and variable arguments are provided as needed.
//
// The log level can be set with log_getminlevel() and log_setminlevel(). The
// point of this header is to report runtime warnings and errors caused by
// invalid input or flawed internal logic, and print performance metrics in
// debug mode.
//
// The log level can also be set with the FXOS_LOG environment variable.
//---

#ifndef FXOS_UTIL_LOG_H
#define FXOS_UTIL_LOG_H

#include <fxos/util/format.h>

namespace FxOS {

/* Message levels, for masking */
constexpr int LOG_LEVEL_LOG = 0;
constexpr int LOG_LEVEL_WRN = 1;
constexpr int LOG_LEVEL_ERR = 2;

/* Select the log level */
void log_setminlevel(int level);

/* Get the minimum log level */
int log_getminlevel();

/* General message logger */
void logmsg(int level, char const *file, int line, char const *func,
    std::string message);

} /* namespace FxOS */

#define FxOS_log(level, fmt, ...) \
    FxOS::logmsg(FxOS::LOG_LEVEL_##level, __FILE__, __LINE__, __func__, \
        format(fmt, ##__VA_ARGS__))

#endif /* FXOS_UTIL_LOG_H */