106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
/* Copyright 2003-2008 Joaquin M Lopez Munoz.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* See http://www.boost.org/libs/multi_index for library home page.
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*/
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#ifndef BOOST_MULTI_INDEX_DETAIL_SAFE_CTR_PROXY_HPP
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#define BOOST_MULTI_INDEX_DETAIL_SAFE_CTR_PROXY_HPP
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#if defined(_MSC_VER)&&(_MSC_VER>=1200)
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#pragma once
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#endif
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#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
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#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
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#include <boost/detail/workaround.hpp>
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#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
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#include <boost/multi_index/detail/safe_mode.hpp>
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namespace boost{
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namespace multi_index{
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namespace detail{
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/* A safe iterator is instantiated in the form
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* safe_iterator<Iterator,Container>: MSVC++ 6.0 has serious troubles with
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* the resulting symbols names, given that index names (which stand for
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* Container) are fairly long themselves. safe_ctr_proxy does not statically
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* depend on Container, and provides the necessary methods (begin and end) to
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* the safe mode framework via an abstract interface. With safe_ctr_proxy,
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* instead of deriving from safe_container<Container> the following base class
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* must be used:
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*
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* safe_ctr_proxy_impl<Iterator,Container>
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*
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* where Iterator is the type of the *unsafe* iterator being wrapped.
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* The corresponding safe iterator instantiation is then
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*
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* safe_iterator<Iterator,safe_ctr_proxy<Iterator> >,
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*
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* which does not include the name of Container.
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*/
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template<typename Iterator>
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class safe_ctr_proxy:
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public safe_mode::safe_container<safe_ctr_proxy<Iterator> >
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{
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public:
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typedef safe_mode::safe_iterator<Iterator,safe_ctr_proxy> iterator;
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typedef iterator const_iterator;
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iterator begin(){return begin_impl();}
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const_iterator begin()const{return begin_impl();}
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iterator end(){return end_impl();}
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const_iterator end()const{return end_impl();}
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protected:
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virtual iterator begin_impl()=0;
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virtual const_iterator begin_impl()const=0;
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virtual iterator end_impl()=0;
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virtual const_iterator end_impl()const=0;
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};
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template<typename Iterator,typename Container>
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class safe_ctr_proxy_impl:public safe_ctr_proxy<Iterator>
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{
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typedef safe_ctr_proxy<Iterator> super;
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typedef Container container_type;
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public:
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typedef typename super::iterator iterator;
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typedef typename super::const_iterator const_iterator;
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virtual iterator begin_impl(){return container().begin();}
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virtual const_iterator begin_impl()const{return container().begin();}
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virtual iterator end_impl(){return container().end();}
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virtual const_iterator end_impl()const{return container().end();}
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private:
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container_type& container()
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{
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return *static_cast<container_type*>(this);
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}
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const container_type& container()const
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{
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return *static_cast<const container_type*>(this);
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}
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};
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} /* namespace multi_index::detail */
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} /* namespace multi_index */
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} /* namespace boost */
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#endif /* workaround */
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#endif /* BOOST_MULTI_INDEX_ENABLE_SAFE_MODE */
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#endif
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