63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2007 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef PHOENIX_STATEMENT_DO_WHILE_HPP
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#define PHOENIX_STATEMENT_DO_WHILE_HPP
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#include <boost/spirit/home/phoenix/core/composite.hpp>
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#include <boost/spirit/home/phoenix/core/compose.hpp>
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namespace boost { namespace phoenix
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{
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struct do_while_eval
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{
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template <typename Env, typename Cond, typename Do>
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struct result
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{
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typedef void type;
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};
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template <typename RT, typename Env, typename Cond, typename Do>
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static void
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eval(Env const& env, Cond& cond, Do& do_)
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{
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do
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do_.eval(env);
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while (cond.eval(env));
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}
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};
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template <typename Do>
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struct do_while_gen
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{
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do_while_gen(Do const& do_)
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: do_(do_) {}
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template <typename Cond>
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actor<typename as_composite<do_while_eval, Cond, Do>::type>
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while_(Cond const& cond) const
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{
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return compose<do_while_eval>(cond, do_);
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}
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Do do_;
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};
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struct do_gen
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{
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template <typename Do>
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do_while_gen<Do>
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operator[](Do const& do_) const
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{
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return do_while_gen<Do>(do_);
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}
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};
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do_gen const do_ = do_gen();
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}}
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#endif
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