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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_DO_WHILE_HPP
#define BOOST_PHOENIX_STATEMENT_DO_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)(do_while)
, (meta_grammar) // Cond
(meta_grammar) // Do
)
namespace boost { namespace phoenix
{
struct do_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
{
do
boost::phoenix::eval(do_it, ctx);
while (boost::phoenix::eval(cond, ctx));
}
};
template <typename Dummy>
struct default_actions::when<rule::do_while, Dummy>
: call<do_while_eval, Dummy>
{};
template <typename Do>
struct do_while_gen
{
do_while_gen(Do const& do_it)
: do_(do_it) {}
template <typename Cond>
typename expression::do_while<Cond, Do>::type const
while_(Cond const& cond) const
{
return expression::do_while<Cond, Do>::make(cond, do_);
}
Do const& do_;
};
struct do_gen
{
template <typename Do>
do_while_gen<Do> const
operator[](Do const& do_) const
{
return do_while_gen<Do>(do_);
}
};
#ifndef BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
do_gen const do_ = {};
#endif
}}
#endif
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