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/*============================================================================== Copyright (c) 2001-2010 Joel de Guzman Copyright (c) 2010 Thomas Heller 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) ==============================================================================*/ #ifndef BOOST_PHOENIX_STATEMENT_WHILE_HPP #define BOOST_PHOENIX_STATEMENT_WHILE_HPP #include <boost/phoenix/core/limits.hpp> #include <boost/phoenix/core/call.hpp> #include <boost/phoenix/core/expression.hpp> #include <boost/phoenix/core/meta_grammar.hpp> BOOST_PHOENIX_DEFINE_EXPRESSION( (boost)(phoenix)(while_) , (meta_grammar) // Cond (meta_grammar) // Do ) namespace boost { namespace phoenix { struct while_eval { typedef void result_type; template <typename Cond, typename Do, typename Context> result_type operator()(Cond const& cond, Do const& do_it, Context const & ctx) const { while(boost::phoenix::eval(cond, ctx)) { boost::phoenix::eval(do_it, ctx); } } }; template <typename Dummy> struct default_actions::when<rule::while_, Dummy> : call<while_eval, Dummy> {}; template <typename Cond> struct while_gen { while_gen(Cond const& cond_) : cond(cond_) {} template <typename Do> typename expression::while_<Cond, Do>::type const operator[](Do const& do_it) const { return expression::while_<Cond, Do>::make(cond, do_it); } Cond const& cond; }; template <typename Cond> inline while_gen<Cond> const while_(Cond const& cond) { return while_gen<Cond>(cond); } }} #endif