| /*============================================================================= | |
| 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 |