vmd/detail/assert.hpp

0001
0002 //  (C) Copyright Edward Diener 2011-2015
0003 //  Use, modification and distribution are subject to the Boost Software License,
0004 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0005 //  http://www.boost.org/LICENSE_1_0.txt).
0006
0007 #if !defined(BOOST_VMD_DETAIL_ASSERT_HPP)
0008 #define BOOST_VMD_DETAIL_ASSERT_HPP
0009
0010 #include <boost/preprocessor/debug/assert.hpp>
0011 #include <boost/preprocessor/variadic/elem.hpp>
0012
0013 #if BOOST_VMD_MSVC
0014
0015 #include <boost/preprocessor/comparison/equal.hpp>
0016 #include <boost/preprocessor/control/if.hpp>
0017 #include <boost/preprocessor/control/iif.hpp>
0018 #include <boost/preprocessor/variadic/size.hpp>
0019 #include <boost/vmd/empty.hpp>
0020
0021 #define BOOST_VMD_DETAIL_ASSERT_VC_GEN_ERROR_OUTPUT(errstr) \
0022     BOOST_PP_ASSERT(0) \
0023     typedef char errstr[-1]; \
0024 /**/
0025
0026 #define BOOST_VMD_DETAIL_ASSERT_VC_GEN_ERROR_DEFAULT(...) \
0027     BOOST_VMD_DETAIL_ASSERT_VC_GEN_ERROR_OUTPUT(BOOST_VMD_ASSERT_ERROR) \
0028 /**/
0029
0030 #define BOOST_VMD_DETAIL_ASSERT_VC_GEN_ERROR_ERRSTR(...) \
0031     BOOST_VMD_DETAIL_ASSERT_VC_GEN_ERROR_OUTPUT(BOOST_PP_VARIADIC_ELEM(1,__VA_ARGS__)) \
0032 /**/
0033
0034 #define BOOST_VMD_DETAIL_ASSERT_TRUE(...) \
0035     BOOST_PP_IIF \
0036         ( \
0037         BOOST_PP_EQUAL \
0038             ( \
0039             BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), \
0040             1 \
0041             ), \
0042         BOOST_VMD_DETAIL_ASSERT_VC_GEN_ERROR_DEFAULT, \
0043         BOOST_VMD_DETAIL_ASSERT_VC_GEN_ERROR_ERRSTR \
0044         ) \
0045     (__VA_ARGS__) \
0046 /**/
0047
0048 #define BOOST_VMD_DETAIL_ASSERT(...) \
0049     BOOST_PP_IF \
0050       ( \
0051       BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__), \
0052       BOOST_VMD_EMPTY, \
0053       BOOST_VMD_DETAIL_ASSERT_TRUE \
0054       ) \
0055     (__VA_ARGS__) \
0056 /**/
0057
0058 #else
0059
0060 #define BOOST_VMD_DETAIL_ASSERT_DO(cond) \
0061     BOOST_PP_ASSERT(cond) \
0062 /**/
0063
0064 #define BOOST_VMD_DETAIL_ASSERT(...) \
0065     BOOST_VMD_DETAIL_ASSERT_DO(BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__)) \
0066 /**/
0067
0068 #endif /* BOOST_VMD_MSVC */
0069 #endif /* BOOST_VMD_DETAIL_ASSERT_HPP */