Mercurial > hg > CbC > CbC_gcc
comparison include/symcat.h @ 0:a06113de4d67
first commit
| author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 17 Jul 2009 14:47:48 +0900 |
| parents | |
| children | b7f97abdc517 |
comparison
equal
deleted
inserted
replaced
| -1:000000000000 | 0:a06113de4d67 |
|---|---|
| 1 /* Symbol concatenation utilities. | |
| 2 | |
| 3 Copyright (C) 1998, 2000 Free Software Foundation, Inc. | |
| 4 | |
| 5 This program is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 2 of the License, or | |
| 8 (at your option) any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License along | |
| 16 with this program; if not, write to the Free Software Foundation, Inc., | |
| 17 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
| 18 | |
| 19 #ifndef SYM_CAT_H | |
| 20 #define SYM_CAT_H | |
| 21 | |
| 22 #if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE) | |
| 23 #define CONCAT2(a,b) a##b | |
| 24 #define CONCAT3(a,b,c) a##b##c | |
| 25 #define CONCAT4(a,b,c,d) a##b##c##d | |
| 26 #define STRINGX(s) #s | |
| 27 #else | |
| 28 /* Note one should never pass extra whitespace to the CONCATn macros, | |
| 29 e.g. CONCAT2(foo, bar) because traditonal C will keep the space between | |
| 30 the two labels instead of concatenating them. Instead, make sure to | |
| 31 write CONCAT2(foo,bar). */ | |
| 32 #define CONCAT2(a,b) a/**/b | |
| 33 #define CONCAT3(a,b,c) a/**/b/**/c | |
| 34 #define CONCAT4(a,b,c,d) a/**/b/**/c/**/d | |
| 35 #define STRINGX(s) "s" | |
| 36 #endif | |
| 37 | |
| 38 #define XCONCAT2(a,b) CONCAT2(a,b) | |
| 39 #define XCONCAT3(a,b,c) CONCAT3(a,b,c) | |
| 40 #define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d) | |
| 41 | |
| 42 /* Note the layer of indirection here is typically used to allow | |
| 43 stringification of the expansion of macros. I.e. "#define foo | |
| 44 bar", "XSTRING(foo)", to yield "bar". Be aware that this only | |
| 45 works for __STDC__, not for traditional C which will still resolve | |
| 46 to "foo". */ | |
| 47 #define XSTRING(s) STRINGX(s) | |
| 48 | |
| 49 #endif /* SYM_CAT_H */ |