| /*============================================================================= |
| 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_ERASE_ACTOR_HPP |
| #define BOOST_SPIRIT_ACTOR_ERASE_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 calss the erase method. |
| // (This doc uses convention available in actors.hpp) |
| // |
| // Actions (what it does): |
| // ref.erase( value ); |
| // ref.erase( T::key_type(first,last) ); |
| // ref.erase( key_ref ); |
| // |
| // Policy name: |
| // erase_action |
| // |
| // Policy holder, corresponding helper method: |
| // ref_value_actor, erase_a( ref ); |
| // ref_const_ref_actor, erase_a( ref, key_ref ); |
| // |
| // () operators: both |
| // |
| // See also ref_value_actor and ref_const_ref_actor for more details. |
| /////////////////////////////////////////////////////////////////////////// |
| struct erase_action |
| { |
| template< |
| typename T, |
| typename KeyT |
| > |
| void act(T& ref_, KeyT const& key_) const |
| { |
| ref_.erase(key_); |
| } |
| template< |
| typename T, |
| typename IteratorT |
| > |
| void act( |
| T& ref_, |
| IteratorT const& first_, |
| IteratorT const& last_ |
| ) const |
| { |
| typedef typename T::key_type key_type; |
| key_type key(first_,last_); |
| |
| ref_.erase(key); |
| } |
| }; |
| |
| template<typename T> |
| inline ref_value_actor<T,erase_action> erase_a(T& ref_) |
| { |
| return ref_value_actor<T,erase_action>(ref_); |
| } |
| |
| template< |
| typename T, |
| typename KeyT |
| > |
| inline ref_const_ref_actor<T,KeyT,erase_action> erase_a( |
| T& ref_, |
| KeyT const& key_ |
| ) |
| { |
| return ref_const_ref_actor<T,KeyT,erase_action>(ref_,key_); |
| } |
| |
| BOOST_SPIRIT_CLASSIC_NAMESPACE_END |
| |
| }} |
| |
| #endif |