#pragma once

/** build year as number */
#define COMPUTE_BUILD_YEAR \
    ( \
        (__DATE__[ 7] - '0') * 1000 + \
        (__DATE__[ 8] - '0') *  100 + \
        (__DATE__[ 9] - '0') *   10 + \
        (__DATE__[10] - '0') \
    )
/** build day as number */
#define COMPUTE_BUILD_DAY \
    ( \
        ((__DATE__[4] >= '0') ? (__DATE__[4] - '0') * 10 : 0) + \
        (__DATE__[5] - '0') \
    )
/** check if build month is January */
#define BUILD_MONTH_IS_JAN (__DATE__[0] == 'J' && __DATE__[1] == 'a' && __DATE__[2] == 'n')
/** check if build month is February */
#define BUILD_MONTH_IS_FEB (__DATE__[0] == 'F')
/** check if build month is March */
#define BUILD_MONTH_IS_MAR (__DATE__[0] == 'M' && __DATE__[1] == 'a' && __DATE__[2] == 'r')
/** check if build month is April */
#define BUILD_MONTH_IS_APR (__DATE__[0] == 'A' && __DATE__[1] == 'p')
/** check if build month is May */
#define BUILD_MONTH_IS_MAY (__DATE__[0] == 'M' && __DATE__[1] == 'a' && __DATE__[2] == 'y')
/** check if build month is June */
#define BUILD_MONTH_IS_JUN (__DATE__[0] == 'J' && __DATE__[1] == 'u' && __DATE__[2] == 'n')
/** check if build month is July */
#define BUILD_MONTH_IS_JUL (__DATE__[0] == 'J' && __DATE__[1] == 'u' && __DATE__[2] == 'l')
/** check if build month is August */
#define BUILD_MONTH_IS_AUG (__DATE__[0] == 'A' && __DATE__[1] == 'u')
/** check if build month is September */
#define BUILD_MONTH_IS_SEP (__DATE__[0] == 'S')
/** check if build month is October */
#define BUILD_MONTH_IS_OCT (__DATE__[0] == 'O')
/** check if build month is November */
#define BUILD_MONTH_IS_NOV (__DATE__[0] == 'N')
/** check if build month is December */
#define BUILD_MONTH_IS_DEC (__DATE__[0] == 'D')
/** build month as number */
#define COMPUTE_BUILD_MONTH \
    ( \
        (BUILD_MONTH_IS_JAN) ?  1 : \
        (BUILD_MONTH_IS_FEB) ?  2 : \
        (BUILD_MONTH_IS_MAR) ?  3 : \
        (BUILD_MONTH_IS_APR) ?  4 : \
        (BUILD_MONTH_IS_MAY) ?  5 : \
        (BUILD_MONTH_IS_JUN) ?  6 : \
        (BUILD_MONTH_IS_JUL) ?  7 : \
        (BUILD_MONTH_IS_AUG) ?  8 : \
        (BUILD_MONTH_IS_SEP) ?  9 : \
        (BUILD_MONTH_IS_OCT) ? 10 : \
        (BUILD_MONTH_IS_NOV) ? 11 : \
        (BUILD_MONTH_IS_DEC) ? 12 : \
        /* error default */  99 \
    )
/** check if build date is unknown */
#define BUILD_DATE_IS_BAD (__DATE__[0] == '?')
/** build year as number if known, or 0 if unknown */
#define BUILD_YEAR  ((BUILD_DATE_IS_BAD) ? 0 : COMPUTE_BUILD_YEAR)
/** build month as number if known, or 0 if unknown */
#define BUILD_MONTH ((BUILD_DATE_IS_BAD) ? 99 : COMPUTE_BUILD_MONTH)
/** build day as number if known, or 0 if unknown */
#define BUILD_DAY   ((BUILD_DATE_IS_BAD) ? 99 : COMPUTE_BUILD_DAY)