| #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES) |
| |
| #include <boost/proto/context/detail/preprocessed/null_eval.hpp> |
| |
| #elif !defined(BOOST_PP_IS_ITERATING) |
| |
| #define BOOST_PROTO_EVAL_N(Z, N, DATA) \ |
| proto::eval(proto::child_c<N>(expr), ctx); \ |
| /**/ |
| |
| #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) |
| #pragma wave option(preserve: 2, line: 0, output: "preprocessed/null_eval.hpp") |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /// \file null_eval.hpp |
| /// Contains specializations of the null_eval\<\> class template. |
| // |
| // Copyright 2008 Eric Niebler. Distributed under 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(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) |
| #pragma wave option(preserve: 1) |
| #endif |
| |
| #define BOOST_PP_ITERATION_PARAMS_1 \ |
| (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/context/detail/null_eval.hpp>)) |
| #include BOOST_PP_ITERATE() |
| |
| #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) |
| #pragma wave option(output: null) |
| #endif |
| |
| #undef BOOST_PROTO_EVAL_N |
| |
| #else |
| |
| #define N BOOST_PP_ITERATION() |
| |
| template<typename Expr, typename Context> |
| struct null_eval<Expr, Context, N> |
| { |
| typedef void result_type; |
| |
| void operator ()(Expr &expr, Context &ctx) const |
| { |
| BOOST_PP_REPEAT(N, BOOST_PROTO_EVAL_N, ~) |
| } |
| }; |
| |
| #undef N |
| |
| #endif |