101 lines
2.9 KiB
Plaintext
101 lines
2.9 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_ASSIGN_ACTOR_HPP
|
|
#define BOOST_SPIRIT_ACTOR_ASSIGN_ACTOR_HPP
|
|
|
|
#include <boost/spirit/home/classic/namespace.hpp>
|
|
#include <boost/spirit/home/classic/actor/ref_value_actor.hpp>
|
|
#include <boost/spirit/home/classic/actor/ref_const_ref_actor.hpp>
|
|
|
|
namespace boost { namespace spirit {
|
|
|
|
BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Summary:
|
|
// A semantic action policy that applies the assignement operator.
|
|
// (This doc uses convention available in actors.hpp)
|
|
//
|
|
// Actions (what it does):
|
|
// ref = value;
|
|
// ref = T(first,last);
|
|
// ref = value_ref;
|
|
//
|
|
// Policy name:
|
|
// assign_action
|
|
//
|
|
// Policy holder, corresponding helper method:
|
|
// ref_value_actor, assign_a( ref );
|
|
// ref_const_ref_actor, assign_a( ref, value_ref );
|
|
//
|
|
// () operators: both
|
|
//
|
|
// See also ref_value_actor and ref_const_ref_actor for more details.
|
|
///////////////////////////////////////////////////////////////////////////
|
|
struct assign_action
|
|
{
|
|
template<
|
|
typename T,
|
|
typename ValueT
|
|
>
|
|
void act(T& ref_, ValueT const& value_) const
|
|
{
|
|
ref_ = value_;
|
|
}
|
|
template<
|
|
typename T,
|
|
typename IteratorT
|
|
>
|
|
void act(
|
|
T& ref_,
|
|
IteratorT const& first_,
|
|
IteratorT const& last_
|
|
) const
|
|
{
|
|
typedef T value_type;
|
|
#ifndef BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
|
|
value_type value(first_,last_);
|
|
#else
|
|
value_type value;
|
|
std::copy(first_, last_, std::inserter(value, value.end()));
|
|
#endif
|
|
ref_ = value;
|
|
}
|
|
};
|
|
|
|
// Deprecated. Please use assign_a
|
|
template<typename T>
|
|
inline ref_value_actor<T,assign_action> assign(T& ref_)
|
|
{
|
|
return ref_value_actor<T,assign_action>(ref_);
|
|
}
|
|
|
|
template<typename T>
|
|
inline ref_value_actor<T,assign_action> assign_a(T& ref_)
|
|
{
|
|
return ref_value_actor<T,assign_action>(ref_);
|
|
}
|
|
|
|
template<
|
|
typename T,
|
|
typename ValueT
|
|
>
|
|
inline ref_const_ref_actor<T,ValueT,assign_action> assign_a(
|
|
T& ref_,
|
|
ValueT const& value_
|
|
)
|
|
{
|
|
return ref_const_ref_actor<T,ValueT,assign_action>(ref_,value_);
|
|
}
|
|
|
|
BOOST_SPIRIT_CLASSIC_NAMESPACE_END
|
|
|
|
}}
|
|
|
|
#endif
|