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- /*=============================================================================
- 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_PUSH_FRONT_ACTOR_HPP
- #define BOOST_SPIRIT_ACTOR_PUSH_FRONT_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 appends a value to the front of a
- // container.
- // (This doc uses convention available in actors.hpp)
- //
- // Actions (what it does and what ref, value_ref must support):
- // ref.push_front( value );
- // ref.push_front( T::value_type(first,last) );
- // ref.push_front( value_ref );
- //
- // Policy name:
- // push_front_action
- //
- // Policy holder, corresponding helper method:
- // ref_value_actor, push_front_a( ref );
- // ref_const_ref_actor, push_front_a( ref, value_ref );
- //
- // () operators: both
- //
- // See also ref_value_actor and ref_const_ref_actor for more details.
- ///////////////////////////////////////////////////////////////////////////
- struct push_front_action
- {
- template<
- typename T,
- typename ValueT
- >
- void act(T& ref_, ValueT const& value_) const
- {
- ref_.push_front( value_ );
- }
- template<
- typename T,
- typename IteratorT
- >
- void act(
- T& ref_,
- IteratorT const& first_,
- IteratorT const& last_
- ) const
- {
- typedef typename T::value_type value_type;
- value_type value(first_,last_);
- ref_.push_front( value );
- }
- };
- template<typename T>
- inline ref_value_actor<T,push_front_action> push_front_a(T& ref_)
- {
- return ref_value_actor<T,push_front_action>(ref_);
- }
- template<
- typename T,
- typename ValueT
- >
- inline ref_const_ref_actor<T,ValueT,push_front_action> push_front_a(
- T& ref_,
- ValueT const& value_
- )
- {
- return ref_const_ref_actor<T,ValueT,push_front_action>(ref_,value_);
- }
- BOOST_SPIRIT_CLASSIC_NAMESPACE_END
- }}
- #endif
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