2 * Portions Copyright (c) 2011, Aggelos Economopoulos
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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32 #ifndef _SYS_CPPUTIL_H_
33 #define _SYS_CPPUTIL_H_
35 #include <sys/cdefs.h>
37 * This file includes macros that abuse the preprocessor --
38 * we don't want to have to parse these except when compiling
39 * the files that actually use them.
43 * Returns the number of args in __VA_ARGS__.
44 * Note: returns 1 if __VA_ARGS__ is empty!
45 * Taken from the Boost library.
48 #define VA_NARGS(...) __VA_ARGS_SIZE(__VA_ARGS__, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1,)
50 #define __VA_ARGS_SIZE(e0, e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, e11, e12, e13, e14, e15, e16, e17, e18, e19, e20, e21, e22, e23, e24, e25, e26, e27, e28, e29, e30, e31, e32, e33, e34, e35, e36, e37, e38, e39, e40, e41, e42, e43, e44, e45, e46, e47, e48, e49, e50, e51, e52, e53, e54, e55, e56, e57, e58, e59, e60, e61, e62, e63, size, ...) size
53 * Generate a struction declaration using the arguments passed in.
54 * E.g. __GENSTRUCT(mystruct, int a, char *b); expands to
61 #define __GENSTRUCT(tag, args...)\
62 __CONCAT(__GENSTRUCT,VA_NARGS(args))(tag, args)
65 #define __GENSTRUCT1(tag, arg1) struct tag { \
68 #define __GENSTRUCT2(tag, arg1, arg2) struct tag { \
72 #define __GENSTRUCT3(tag, arg1, arg2, arg3) struct tag { \
77 #define __GENSTRUCT4(tag, arg1, arg2, arg3, arg4) struct tag { \
83 #define __GENSTRUCT5(tag, arg1, arg2, arg3, arg4, arg5) struct tag { \
90 #define __GENSTRUCT6(tag, arg1, arg2, arg3, arg4, arg5, arg6) struct tag { \
98 #define __GENSTRUCT7(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7) struct tag { \
107 #define __GENSTRUCT8(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) struct tag { \
117 #define __GENSTRUCT9(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) struct tag { \
128 #define __GENSTRUCT10(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10) struct tag { \
140 #define __GENSTRUCT11(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11) struct tag { \
153 #define __GENSTRUCT12(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12) struct tag { \
167 #define __GENSTRUCT13(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13) struct tag { \
182 #define __GENSTRUCT14(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14) struct tag { \
198 #define __GENSTRUCT15(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15) struct tag { \
215 #define __GENSTRUCT16(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15, arg16) struct tag { \
233 #define __GENSTRUCT17(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15, arg16, arg17) struct tag { \
252 #define __GENSTRUCT18(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15, arg16, arg17, arg18)struct tag { \
272 #define __GENSTRUCT19(tag, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15, arg16, arg17, arg18, arg19) struct tag { \
293 #endif /* _SYS_CPPUTIL_H_ */