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- // (C) Copyright Edward Diener 2011-2015
- // Use, modification and distribution are subject to the Boost Software License,
- // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt).
- #if !defined(BOOST_VMD_ASSERT_HPP)
- #define BOOST_VMD_ASSERT_HPP
- #include <boost/vmd/detail/setup.hpp>
- #if BOOST_PP_VARIADICS
- #include <boost/vmd/detail/assert.hpp>
- /*
- The succeeding comments in this file are in doxygen format.
- */
- /** \file
- */
- /** \def BOOST_VMD_ASSERT(...)
- \brief Conditionally causes an error to be generated.
- ... = variadic parameters, maximum of 2 will be considered.
- Any variadic parameters beyond the maximum of 2 are just ignored.
-
- The first variadic parameter is:
- cond = A condition that determines whether an assertion occurs. Valid values range from 0 to BOOST_PP_LIMIT_MAG.
-
- The second variadic parameter (optional) is:
-
- errstr = An error string for generating a compiler error when using the VC++ compiler.
- The VC++ compiler is incapable of producing a preprocessor error so when the 'cond'
- is 0, a compiler error is generated by outputting C++ code in the form of:
-
- typedef char errstr[-1];
-
- The errstr defaults to BOOST_VMD_ASSERT_ERROR if not supplied.
- It is only relevant for VC++.
- returns = If cond expands to 0, this macro causes an error. Otherwise, it expands to nothing.
- For all compilers other than Visual C++ the error is a preprocessing error.
- For Visual C++ the error is caused by output invalid C++: this error could be
- masked if the invalid output is ignored by a macro which invokes this macro.
-
- */
- # define BOOST_VMD_ASSERT(...) \
- BOOST_VMD_DETAIL_ASSERT(__VA_ARGS__) \
- /**/
- #endif /* BOOST_PP_VARIADICS */
- #endif /* BOOST_VMD_ASSERT_HPP */
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