1 2 // Copyright (C) 2009-2012 Lorenzo Caminiti 3 // Distributed under the Boost Software License, Version 1.0 4 // (see accompanying file LICENSE_1_0.txt or a copy at 5 // http://www.boost.org/LICENSE_1_0.txt) 6 // Home at http://www.boost.org/libs/local_function 7 8 #ifndef BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SIGN_VALIDATE_HPP_ 9 #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SIGN_VALIDATE_HPP_ 10 11 #include <boost/local_function/aux_/preprocessor/traits/decl_sign_/validate_/defaults.hpp> 12 #include <boost/local_function/aux_/preprocessor/traits/decl_sign_/validate_/this.hpp> 13 #include <boost/preprocessor/tuple/eat.hpp> 14 15 // PRIVATE // 16 17 #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SIGN_VALIDATE_1_(sign, error) \ 18 BOOST_PP_IIF(BOOST_PP_IS_EMPTY(error(/* expand empty */)), \ 19 BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SIGN_VALIDATE_THIS \ 20 , \ 21 error BOOST_PP_TUPLE_EAT(1) \ 22 )(sign) 23 24 // PUBLIC // 25 26 // Validate params before starting to parse it. 27 #define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SIGN_VALIDATE(sign) \ 28 BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SIGN_VALIDATE_1_(sign, \ 29 BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SIGN_VALIDATE_DEFAULTS(sign)) 30 31 #endif // #include guard 32 33