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Using private detail CAT to avoid DELAY macros

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[SVN r14147]
This commit is contained in:
Vesa Karvonen
2002-06-14 20:38:54 +00:00
parent 5e0488f509
commit 54d0da5221
10 changed files with 57 additions and 34 deletions
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6
include/boost/preprocessor/if.hpp
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@ -13,6 +13,7 @@
* See http://www.boost.org for most recent version.
*/
#include <boost/preprocessor/detail/cat.hpp>
#include <boost/preprocessor/logical/bool.hpp>
#include <boost/preprocessor/tuple/elem.hpp>
@ -33,8 +34,5 @@
<li><a href="../../test/preprocessor_test.cpp">preprocessor_test.cpp</a></li>
</ul>
*/
#define BOOST_PP_IF(COND,THEN,ELSE) BOOST_PP_IF_BOOL(BOOST_PP_BOOL(COND))(ELSE,THEN)
#define BOOST_PP_IF_BOOL(C) BOOST_PP_IF_BOOL_DELAY(C)
#define BOOST_PP_IF_BOOL_DELAY(C) BOOST_PP_TUPLE2_ELEM##C
#define BOOST_PP_IF(COND,THEN,ELSE) BOOST_PP_DETAIL_CAT2(BOOST_PP_TUPLE2_ELEM,BOOST_PP_BOOL(COND))(ELSE,THEN)
#endif