62 lines
1.9 KiB
Plaintext
62 lines
1.9 KiB
Plaintext
|
/*=============================================================================
|
||
|
|
Copyright (c) 2003 Jonathan de Halleux (dehalleux@pelikhan.com)
|
||
|
|
http://spirit.sourceforge.net/
|
||
|
|
|
||
|
|
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_SPIRIT_ACTOR_CLEAR_ACTOR_HPP
|
||
|
|
#define BOOST_SPIRIT_ACTOR_CLEAR_ACTOR_HPP
|
||
|
|
|
||
|
|
#include <boost/spirit/home/classic/namespace.hpp>
|
||
|
|
#include <boost/spirit/home/classic/actor/ref_actor.hpp>
|
||
|
|
|
||
|
|
namespace boost { namespace spirit {
|
||
|
|
|
||
|
|
BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////
|
||
|
|
// Summary:
|
||
|
|
// A semantic action policy that calls clear method.
|
||
|
|
// (This doc uses convention available in actors.hpp)
|
||
|
|
//
|
||
|
|
// Actions (what it does):
|
||
|
|
// ref.clear();
|
||
|
|
//
|
||
|
|
// Policy name:
|
||
|
|
// clear_action
|
||
|
|
//
|
||
|
|
// Policy holder, corresponding helper method:
|
||
|
|
// ref_actor, clear_a( ref );
|
||
|
|
//
|
||
|
|
// () operators: both.
|
||
|
|
//
|
||
|
|
// See also ref_actor for more details.
|
||
|
|
///////////////////////////////////////////////////////////////////////////
|
||
|
|
struct clear_action
|
||
|
|
{
|
||
|
|
template<
|
||
|
|
typename T
|
||
|
|
>
|
||
|
|
void act(T& ref_) const
|
||
|
|
{
|
||
|
|
ref_.clear();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////
|
||
|
|
// helper method that creates a and_assign_actor.
|
||
|
|
///////////////////////////////////////////////////////////////////////////
|
||
|
|
template<typename T>
|
||
|
|
inline ref_actor<T,clear_action> clear_a(T& ref_)
|
||
|
|
{
|
||
|
|
return ref_actor<T,clear_action>(ref_);
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOST_SPIRIT_CLASSIC_NAMESPACE_END
|
||
|
|
|
||
|
|
}}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|