General macro utilities. More...

Macros
#define	BBM_PARENS ()

#define	BBM_PASS(...) __VA_ARGS__
	Just pass the arguments.

#define	BBM_CALL(macro, ...) macro (__VA_ARGS__)
	Expand the args, then call the macro.

#define	BBM_COMMA() ,
	A comma.

#define	BBM_EXPAND(...) _BBM_EXPAND4(_BBM_EXPAND4(_BBM_EXPAND4(_BBM_EXPAND4(__VA_ARGS__))))
	Re-scan VA_ARGS 342 times. Part of BBM_FOREACH.

#define	BBM_FOREACH_OPT(MACRO, OPT, ...) __VA_OPT__(BBM_EXPAND(_BBM_FOREACH_OPT(MACRO, OPT, __VA_ARGS__)))
	A macro that applies a macro (MACRO) on every argument in VA_ARGS followed by an (OPT) macro (without arguments) except following the last argument in VA_ARGS.

#define	BBM_FOR_EACH(MACRO, ...) BBM_FOREACH_OPT(MACRO, , __VA_ARGS__)
	A macro that applies another macro (MACRO) on every argument in VA_ARGS (i.e., BBM_FOREACH_OPT with empty OPT-macro)

#define	BBM_TO_STRING(...) #__VA_ARGS__
	VA_ARGS => "__VA_ARGS__"

#define	BBM_STRINGIFY(...) BBM_TO_STRING(__VA_ARGS__)
	Expand VA_ARGS before converting to a string of comma separated elements.

#define	BBM_STRINGIFY_EACH(...) BBM_FOREACH_OPT(BBM_TO_STRING, BBM_COMMA, __VA_ARGS__)
	Expand VA_ARGS before converting to a comma separated series strings of elements.

Detailed Description

General macro utilities.

Macro Definition Documentation

◆ BBM_CALL

#define BBM_CALL	(	macro,
		...
	)	macro (__VA_ARGS__)

Expand the args, then call the macro.

◆ BBM_COMMA

#define BBM_COMMA ( ) ,

A comma.

◆ BBM_EXPAND

#define BBM_EXPAND ( ... ) _BBM_EXPAND4(_BBM_EXPAND4(_BBM_EXPAND4(_BBM_EXPAND4(__VA_ARGS__))))

Re-scan VA_ARGS 342 times. Part of BBM_FOREACH.

◆ BBM_FOR_EACH

#define BBM_FOR_EACH	(	MACRO,
		...
	)	BBM_FOREACH_OPT(MACRO, , __VA_ARGS__)

A macro that applies another macro (MACRO) on every argument in VA_ARGS (i.e., BBM_FOREACH_OPT with empty OPT-macro)

Parameters

MACRO	= macro to apply to each
...	= list of VA_ARGS

◆ BBM_FOREACH_OPT

#define BBM_FOREACH_OPT	(	MACRO,
		OPT,
		...
	)	__VA_OPT__(BBM_EXPAND(_BBM_FOREACH_OPT(MACRO, OPT, __VA_ARGS__)))

A macro that applies a macro (MACRO) on every argument in VA_ARGS followed by an (OPT) macro (without arguments) except following the last argument in VA_ARGS.

This code is based on https://www.scs.stanford.edu/~dm/blog/va-opt.html

Parameters

MACRO	= macro to apply to each argument in VA_ARGS (takes one argument)
OPT	= macro to apply between each argument in VA_ARGS (takes no arguments)
...	= list of VA_ARGS

◆ BBM_PARENS

#define BBM_PARENS ()

◆ BBM_PASS

#define BBM_PASS ( ... ) __VA_ARGS__

Just pass the arguments.

◆ BBM_STRINGIFY

#define BBM_STRINGIFY ( ... ) BBM_TO_STRING(__VA_ARGS__)

Expand VA_ARGS before converting to a string of comma separated elements.

BBM_STRINGIFY(a,b,c) => "a, b, c"

◆ BBM_STRINGIFY_EACH

#define BBM_STRINGIFY_EACH ( ... ) BBM_FOREACH_OPT(BBM_TO_STRING, BBM_COMMA, __VA_ARGS__)

Expand VA_ARGS before converting to a comma separated series strings of elements.

BBM_STRINGIFY_EACH(a,b,c) => "a", "b", "c"

◆ BBM_TO_STRING

#define BBM_TO_STRING ( ... ) #__VA_ARGS__

VA_ARGS => "__VA_ARGS__"

Macros