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123 lines
2.7 KiB
123 lines
2.7 KiB
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#ifndef BOOST_MPL_AUX_TRANSFORM_ITER_HPP_INCLUDED |
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#define BOOST_MPL_AUX_TRANSFORM_ITER_HPP_INCLUDED |
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// Copyright Aleksey Gurtovoy 2000-2004 |
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// |
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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/mpl for documentation. |
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// $Id: transform_iter.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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// $Revision: 49267 $ |
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#include <boost/mpl/apply.hpp> |
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#include <boost/mpl/iterator_tags.hpp> |
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#include <boost/mpl/next.hpp> |
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#include <boost/mpl/deref.hpp> |
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#include <boost/mpl/aux_/lambda_spec.hpp> |
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#include <boost/mpl/aux_/config/ctps.hpp> |
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#include <boost/type_traits/is_same.hpp> |
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namespace boost { namespace mpl { |
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namespace aux { |
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
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template< |
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typename Iterator |
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, typename LastIterator |
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, typename F |
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> |
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struct transform_iter |
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{ |
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typedef Iterator base; |
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typedef forward_iterator_tag category; |
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typedef transform_iter< typename mpl::next<base>::type,LastIterator,F > next; |
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typedef typename apply1< |
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F |
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, typename deref<base>::type |
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>::type type; |
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}; |
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template< |
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typename LastIterator |
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, typename F |
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> |
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struct transform_iter< LastIterator,LastIterator,F > |
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{ |
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typedef LastIterator base; |
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typedef forward_iterator_tag category; |
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}; |
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#else |
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template< |
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typename Iterator |
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, typename LastIterator |
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, typename F |
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> |
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struct transform_iter; |
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template< bool > |
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struct transform_iter_impl |
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{ |
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template< |
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typename Iterator |
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, typename LastIterator |
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, typename F |
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> |
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struct result_ |
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{ |
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typedef Iterator base; |
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typedef forward_iterator_tag category; |
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typedef transform_iter< typename mpl::next<Iterator>::type,LastIterator,F > next; |
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typedef typename apply1< |
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F |
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, typename deref<Iterator>::type |
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>::type type; |
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}; |
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}; |
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template<> |
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struct transform_iter_impl<true> |
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{ |
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template< |
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typename Iterator |
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, typename LastIterator |
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, typename F |
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> |
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struct result_ |
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{ |
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typedef Iterator base; |
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typedef forward_iterator_tag category; |
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}; |
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}; |
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template< |
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typename Iterator |
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, typename LastIterator |
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, typename F |
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> |
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struct transform_iter |
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: transform_iter_impl< |
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::boost::is_same<Iterator,LastIterator>::value |
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>::template result_< Iterator,LastIterator,F > |
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{ |
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}; |
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#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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} // namespace aux |
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BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(3, aux::transform_iter) |
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}} |
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#endif // BOOST_MPL_AUX_TRANSFORM_ITER_HPP_INCLUDED
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