Preprocessor utility macros for counting the number of variadic macro arguments at compile time. More...

Macros
#define	MITK_PP_ARG_COUNT(...)
	Count the number of arguments in a variadic macro invocation (1–25 arguments). More...

#define	MITK_PP_ARG_COUNT_(tuple)
	Internal helper that unpacks the tuple for MITK_PP_ARG_N. More...

#define	MITK_PP_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, N, ...)
	Internal helper that selects the Nth argument to determine the count. More...

#define	MITK_PP_RSEQ_N()
	Internal reverse integer sequence used by MITK_PP_ARG_COUNT to resolve the argument count. More...

Detailed Description

Preprocessor utility macros for counting the number of variadic macro arguments at compile time.

Provides the MITK_PP_ARG_COUNT macro, which expands to the number of arguments passed to it (supports 1 to 25 arguments). This is used internally by the AccessByItk macro family.

Definition in file mitkPPArgCount.h.

Macro Definition Documentation

◆ MITK_PP_ARG_COUNT

#define MITK_PP_ARG_COUNT ( ... )

Count the number of arguments in a variadic macro invocation (1–25 arguments).

Example: MITK_PP_ARG_COUNT(a, b, c) expands to 3.

Definition at line 31 of file mitkPPArgCount.h.

◆ MITK_PP_ARG_COUNT_

#define MITK_PP_ARG_COUNT_ ( tuple )

Internal helper that unpacks the tuple for MITK_PP_ARG_N.

Definition at line 34 of file mitkPPArgCount.h.

◆ MITK_PP_ARG_N

#define MITK_PP_ARG_N	(	_1,
		_2,
		_3,
		_4,
		_5,
		_6,
		_7,
		_8,
		_9,
		_10,
		_11,
		_12,
		_13,
		_14,
		_15,
		_16,
		_17,
		_18,
		_19,
		_20,
		_21,
		_22,
		_23,
		_24,
		_25,
		N,
		...
	)

Internal helper that selects the Nth argument to determine the count.

Definition at line 37 of file mitkPPArgCount.h.

◆ MITK_PP_RSEQ_N

#define MITK_PP_RSEQ_N ( )

Internal reverse integer sequence used by MITK_PP_ARG_COUNT to resolve the argument count.