[deliverable/binutils-gdb.git] / include / symcat.h

/* Symbol concatenation utilities.

   Copyright (C) 1998, 2000, 2010 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License along
   with this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#ifndef SYM_CAT_H
#define SYM_CAT_H

#if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE)
#define CONCAT2(a,b)	 a##b
#define CONCAT3(a,b,c)	 a##b##c
#define CONCAT4(a,b,c,d) a##b##c##d
#define CONCAT5(a,b,c,d,e) a##b##c##d##e
#define CONCAT6(a,b,c,d,e,f) a##b##c##d##e##f
#define STRINGX(s) #s
#else
/* Note one should never pass extra whitespace to the CONCATn macros,
   e.g. CONCAT2(foo, bar) because traditonal C will keep the space between
   the two labels instead of concatenating them.  Instead, make sure to
   write CONCAT2(foo,bar).  */
#define CONCAT2(a,b)	 a/**/b
#define CONCAT3(a,b,c)	 a/**/b/**/c
#define CONCAT4(a,b,c,d) a/**/b/**/c/**/d
#define CONCAT5(a,b,c,d,e) a/**/b/**/c/**/d/**/e
#define CONCAT6(a,b,c,d,e,f) a/**/b/**/c/**/d/**/e/**/f
#define STRINGX(s) "s"
#endif

#define XCONCAT2(a,b)     CONCAT2(a,b)
#define XCONCAT3(a,b,c)   CONCAT3(a,b,c)
#define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d)
#define XCONCAT5(a,b,c,d,e) CONCAT5(a,b,c,d,e)
#define XCONCAT6(a,b,c,d,e,f) CONCAT6(a,b,c,d,e,f)

/* Note the layer of indirection here is typically used to allow
   stringification of the expansion of macros.  I.e. "#define foo
   bar", "XSTRING(foo)", to yield "bar".  Be aware that this only
   works for __STDC__, not for traditional C which will still resolve
   to "foo".  */
#define XSTRING(s) STRINGX(s) 

#endif /* SYM_CAT_H */
Commit	Line	Data
	1	/* Symbol concatenation utilities.
	2
	3	Copyright (C) 1998, 2000, 2010 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 CONCAT5(a,b,c,d,e) a##b##c##d##e
	27	#define CONCAT6(a,b,c,d,e,f) a##b##c##d##e##f
	28	#define STRINGX(s) #s
	29	#else
	30	/* Note one should never pass extra whitespace to the CONCATn macros,
	31	e.g. CONCAT2(foo, bar) because traditonal C will keep the space between
	32	the two labels instead of concatenating them. Instead, make sure to
	33	write CONCAT2(foo,bar). */
	34	#define CONCAT2(a,b) a/**/b
	35	#define CONCAT3(a,b,c) a//b//c
	36	#define CONCAT4(a,b,c,d) a//b//c/**/d
	37	#define CONCAT5(a,b,c,d,e) a//b//c//d//e
	38	#define CONCAT6(a,b,c,d,e,f) a//b//c//d//e/**/f
	39	#define STRINGX(s) "s"
	40	#endif
	41
	42	#define XCONCAT2(a,b) CONCAT2(a,b)
	43	#define XCONCAT3(a,b,c) CONCAT3(a,b,c)
	44	#define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d)
	45	#define XCONCAT5(a,b,c,d,e) CONCAT5(a,b,c,d,e)
	46	#define XCONCAT6(a,b,c,d,e,f) CONCAT6(a,b,c,d,e,f)
	47
	48	/* Note the layer of indirection here is typically used to allow
	49	stringification of the expansion of macros. I.e. "#define foo
	50	bar", "XSTRING(foo)", to yield "bar". Be aware that this only
	51	works for __STDC__, not for traditional C which will still resolve
	52	to "foo". */
	53	#define XSTRING(s) STRINGX(s)
	54
	55	#endif /* SYM_CAT_H */