[857] | 1 | /*=============================================================================
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| 2 | Copyright (c) 2003 Jonathan de Halleux (dehalleux@pelikhan.com)
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| 3 | http://spirit.sourceforge.net/
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| 4 |
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| 5 | Use, modification and distribution is subject to the Boost Software
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| 6 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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| 7 | http://www.boost.org/LICENSE_1_0.txt)
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| 8 | =============================================================================*/
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| 9 | #ifndef BOOST_SPIRIT_ACTOR_ERASE_ACTOR_HPP
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| 10 | #define BOOST_SPIRIT_ACTOR_ERASE_ACTOR_HPP
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| 11 |
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| 12 | #include <boost/spirit/actor/ref_value_actor.hpp>
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| 13 | #include <boost/spirit/actor/ref_const_ref_actor.hpp>
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| 14 |
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| 15 | namespace boost { namespace spirit {
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| 16 |
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| 17 | ///////////////////////////////////////////////////////////////////////////
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| 18 | // Summary:
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| 19 | // A semantic action policy that calss the erase method.
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| 20 | // (This doc uses convention available in actors.hpp)
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| 21 | //
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| 22 | // Actions (what it does):
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| 23 | // ref.erase( value );
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| 24 | // ref.erase( T::key_type(first,last) );
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| 25 | // ref.erase( key_ref );
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| 26 | //
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| 27 | // Policy name:
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| 28 | // erase_action
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| 29 | //
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| 30 | // Policy holder, corresponding helper method:
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| 31 | // ref_value_actor, erase_a( ref );
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| 32 | // ref_const_ref_actor, erase_a( ref, key_ref );
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| 33 | //
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| 34 | // () operators: both
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| 35 | //
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| 36 | // See also ref_value_actor and ref_const_ref_actor for more details.
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| 37 | ///////////////////////////////////////////////////////////////////////////
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| 38 | struct erase_action
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| 39 | {
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| 40 | template<
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| 41 | typename T,
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| 42 | typename KeyT
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| 43 | >
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| 44 | void act(T& ref_, KeyT const& key_) const
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| 45 | {
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| 46 | ref_.erase(key_);
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| 47 | }
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| 48 | template<
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| 49 | typename T,
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| 50 | typename IteratorT
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| 51 | >
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| 52 | void act(
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| 53 | T& ref_,
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| 54 | IteratorT const& first_,
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| 55 | IteratorT const& last_
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| 56 | ) const
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| 57 | {
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| 58 | typedef typename T::key_type key_type;
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| 59 | key_type key(first_,last_);
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| 60 |
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| 61 | ref_.erase(key);
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| 62 | }
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| 63 | };
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| 64 |
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| 65 | template<typename T>
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| 66 | inline ref_value_actor<T,erase_action> erase_a(T& ref_)
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| 67 | {
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| 68 | return ref_value_actor<T,erase_action>(ref_);
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| 69 | }
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| 70 |
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| 71 | template<
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| 72 | typename T,
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| 73 | typename KeyT
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| 74 | >
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| 75 | inline ref_const_ref_actor<T,KeyT,erase_action> erase_a(
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| 76 | T& ref_,
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| 77 | KeyT const& key_
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| 78 | )
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| 79 | {
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| 80 | return ref_const_ref_actor<T,KeyT,erase_action>(ref_,key_);
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| 81 | }
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| 82 |
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| 83 | }}
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| 84 |
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| 85 | #endif
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