1*86d7f5d3SJohn Marino /* Symbol concatenation utilities. 2*86d7f5d3SJohn Marino 3*86d7f5d3SJohn Marino Copyright (C) 1998, 2000, 2010 Free Software Foundation, Inc. 4*86d7f5d3SJohn Marino 5*86d7f5d3SJohn Marino This program is free software; you can redistribute it and/or modify 6*86d7f5d3SJohn Marino it under the terms of the GNU General Public License as published by 7*86d7f5d3SJohn Marino the Free Software Foundation; either version 2 of the License, or 8*86d7f5d3SJohn Marino (at your option) any later version. 9*86d7f5d3SJohn Marino 10*86d7f5d3SJohn Marino This program is distributed in the hope that it will be useful, 11*86d7f5d3SJohn Marino but WITHOUT ANY WARRANTY; without even the implied warranty of 12*86d7f5d3SJohn Marino MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13*86d7f5d3SJohn Marino GNU General Public License for more details. 14*86d7f5d3SJohn Marino 15*86d7f5d3SJohn Marino You should have received a copy of the GNU General Public License along 16*86d7f5d3SJohn Marino with this program; if not, write to the Free Software Foundation, Inc., 17*86d7f5d3SJohn Marino 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 18*86d7f5d3SJohn Marino 19*86d7f5d3SJohn Marino #ifndef SYM_CAT_H 20*86d7f5d3SJohn Marino #define SYM_CAT_H 21*86d7f5d3SJohn Marino 22*86d7f5d3SJohn Marino #if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE) 23*86d7f5d3SJohn Marino #define CONCAT2(a,b) a##b 24*86d7f5d3SJohn Marino #define CONCAT3(a,b,c) a##b##c 25*86d7f5d3SJohn Marino #define CONCAT4(a,b,c,d) a##b##c##d 26*86d7f5d3SJohn Marino #define CONCAT5(a,b,c,d,e) a##b##c##d##e 27*86d7f5d3SJohn Marino #define CONCAT6(a,b,c,d,e,f) a##b##c##d##e##f 28*86d7f5d3SJohn Marino #define STRINGX(s) #s 29*86d7f5d3SJohn Marino #else 30*86d7f5d3SJohn Marino /* Note one should never pass extra whitespace to the CONCATn macros, 31*86d7f5d3SJohn Marino e.g. CONCAT2(foo, bar) because traditonal C will keep the space between 32*86d7f5d3SJohn Marino the two labels instead of concatenating them. Instead, make sure to 33*86d7f5d3SJohn Marino write CONCAT2(foo,bar). */ 34*86d7f5d3SJohn Marino #define CONCAT2(a,b) a/**/b 35*86d7f5d3SJohn Marino #define CONCAT3(a,b,c) a/**/b/**/c 36*86d7f5d3SJohn Marino #define CONCAT4(a,b,c,d) a/**/b/**/c/**/d 37*86d7f5d3SJohn Marino #define CONCAT5(a,b,c,d,e) a/**/b/**/c/**/d/**/e 38*86d7f5d3SJohn Marino #define CONCAT6(a,b,c,d,e,f) a/**/b/**/c/**/d/**/e/**/f 39*86d7f5d3SJohn Marino #define STRINGX(s) "s" 40*86d7f5d3SJohn Marino #endif 41*86d7f5d3SJohn Marino 42*86d7f5d3SJohn Marino #define XCONCAT2(a,b) CONCAT2(a,b) 43*86d7f5d3SJohn Marino #define XCONCAT3(a,b,c) CONCAT3(a,b,c) 44*86d7f5d3SJohn Marino #define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d) 45*86d7f5d3SJohn Marino #define XCONCAT5(a,b,c,d,e) CONCAT5(a,b,c,d,e) 46*86d7f5d3SJohn Marino #define XCONCAT6(a,b,c,d,e,f) CONCAT6(a,b,c,d,e,f) 47*86d7f5d3SJohn Marino 48*86d7f5d3SJohn Marino /* Note the layer of indirection here is typically used to allow 49*86d7f5d3SJohn Marino stringification of the expansion of macros. I.e. "#define foo 50*86d7f5d3SJohn Marino bar", "XSTRING(foo)", to yield "bar". Be aware that this only 51*86d7f5d3SJohn Marino works for __STDC__, not for traditional C which will still resolve 52*86d7f5d3SJohn Marino to "foo". */ 53*86d7f5d3SJohn Marino #define XSTRING(s) STRINGX(s) 54*86d7f5d3SJohn Marino 55*86d7f5d3SJohn Marino #endif /* SYM_CAT_H */ 56