0b6a182c
 Hu Chunming
添加无鉴权注册和注销
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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
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