1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES) 2 3 #include <boost/proto/detail/preprocessed/or_n.hpp> 4 5 #elif !defined(BOOST_PP_IS_ITERATING) 6 7 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 8 #pragma wave option(preserve: 2, line: 0, output: "preprocessed/or_n.hpp") 9 #endif 10 11 /////////////////////////////////////////////////////////////////////////////// 12 /// \file or_n.hpp 13 /// Definitions of or_N 14 // 15 // Copyright 2008 Eric Niebler. Distributed under the Boost 16 // Software License, Version 1.0. (See accompanying file 17 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 18 19 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 20 #pragma wave option(preserve: 1) 21 #endif 22 23 #define BOOST_PP_ITERATION_PARAMS_1 \ 24 (3, (2, BOOST_PROTO_MAX_LOGICAL_ARITY, <boost/proto/detail/or_n.hpp>)) 25 #include BOOST_PP_ITERATE() 26 27 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 28 #pragma wave option(output: null) 29 #endif 30 31 #else // BOOST_PP_IS_ITERATING 32 33 #define N BOOST_PP_ITERATION() 34 35 template<bool B, typename Expr, typename BasicExpr, BOOST_PP_ENUM_PARAMS(N, typename G)> BOOST_PP_CAT(or_,N)36 struct BOOST_PP_CAT(or_, N) 37 #if 2 == N 38 : mpl::bool_<matches_<Expr, BasicExpr, typename G1::proto_grammar>::value> 39 { 40 typedef G1 which; 41 }; 42 #else 43 : BOOST_PP_CAT(or_, BOOST_PP_DEC(N))< 44 matches_<Expr, BasicExpr, typename G1::proto_grammar>::value 45 , Expr, BasicExpr, BOOST_PP_ENUM_SHIFTED_PARAMS(N, G) 46 > 47 {}; 48 #endif 49 50 template<typename Expr, typename BasicExpr BOOST_PP_ENUM_TRAILING_PARAMS(N, typename G)> BOOST_PP_CAT(or_,N)51 struct BOOST_PP_CAT(or_, N)<true, Expr, BasicExpr, BOOST_PP_ENUM_PARAMS(N, G)> 52 : mpl::true_ 53 { 54 typedef G0 which; 55 }; 56 57 #undef N 58 59 #endif 60