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sys: util: Add IF_ENABLED() macro

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Added macro for code inserting based on configuration flag.
This macro is wrapper around COND_CODE_1().

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
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Krzysztof Chruscinski 2019-12-17 09:27:24 +01:00 • committed by Anas Nashif
commit ffb8d479c7
1 changed files with 19 additions and 0 deletions
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19
include/sys/util.h
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@ -323,6 +323,25 @@ u8_t u8_to_dec(char *buf, u8_t buflen, u8_t value);
#define Z_COND_CODE_1(_flag, _if_1_code, _else_code) \ #define Z_COND_CODE_1(_flag, _if_1_code, _else_code) \
__COND_CODE(_XXXX##_flag, _if_1_code, _else_code) __COND_CODE(_XXXX##_flag, _if_1_code, _else_code)
/**
* @brief Insert code if flag is defined and equals 1.
*
* Usage example:
*
* IF_ENABLED(CONFIG_FLAG, (u32_t foo;))
*
* It can be considered as more compact alternative to:
*
* \#if defined(CONFIG_FLAG) && (CONFIG_FLAG == 1)
* u32_t foo;
* \#endif
*
* @param _flag Evaluated flag
* @param _code Code used if flag exists and equal 1. Argument must be
* in brackets.
*/
#define IF_ENABLED(_flag, _code) \
COND_CODE_1(_flag, _code, ())
/** /**
* @brief Insert code depending on result of flag evaluation. * @brief Insert code depending on result of flag evaluation.
* *