#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
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#include <boost/proto/context/detail/preprocessed/null_eval.hpp>
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#elif !defined(BOOST_PP_IS_ITERATING)
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#define BOOST_PROTO_EVAL_N(Z, N, DATA) \
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proto::eval(proto::child_c<N>(expr), ctx); \
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/**/
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#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
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#pragma wave option(preserve: 2, line: 0, output: "preprocessed/null_eval.hpp")
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/// \file null_eval.hpp
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/// Contains specializations of the null_eval\<\> class template.
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//
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// Copyright 2008 Eric Niebler. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
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#pragma wave option(preserve: 1)
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#endif
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#define BOOST_PP_ITERATION_PARAMS_1 \
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(3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/context/detail/null_eval.hpp>))
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#include BOOST_PP_ITERATE()
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#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
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#pragma wave option(output: null)
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#endif
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#undef BOOST_PROTO_EVAL_N
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#else
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#define N BOOST_PP_ITERATION()
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template<typename Expr, typename Context>
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struct null_eval<Expr, Context, N>
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{
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typedef void result_type;
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void operator ()(Expr &expr, Context &ctx) const
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{
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BOOST_PP_REPEAT(N, BOOST_PROTO_EVAL_N, ~)
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}
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};
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#undef N
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#endif
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