format :()

in AliyunOSSSDK/OSSFileLog/OSSLogMacros.h [50:72]

• 3 lines of code
• 3 McCabe index (conditional complexity)

            format : (frmt), ## __VA_ARGS__]

/**
 * Define version of the macro that only execute if the log level is above the threshold.
 * The compiled versions essentially look like this:
 *
 * if (logFlagForThisLogMsg & ddLogLevel) { execute log message }
 *
 * When LOG_LEVEL_DEF is defined as ddLogLevel.
 *
 * As shown further below, Lumberjack actually uses a bitmask as opposed to primitive log levels.
 * This allows for a great amount of flexibility and some pretty advanced fine grained logging techniques.
 *
 * Note that when compiler optimizations are enabled (as they are for your release builds),
 * the log messages above your logging threshold will automatically be compiled out.
 *
 * (If the compiler sees LOG_LEVEL_DEF/ddLogLevel declared as a constant, the compiler simply checks to see
 *  if the 'if' statement would execute, and if not it strips it from the binary.)
 *
 * We also define shorthand versions for asynchronous and synchronous logging.
 **/
#define OSSLOG_MAYBE(async, lvl, flg, ctx, tag, fnct, frmt, ...) \
        do { if(lvl & flg) OSSLOG_MACRO(async, lvl, flg, ctx, tag, fnct, frmt, ##__VA_ARGS__); } while(0)