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			1.1 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
		
		
			
		
	
	
			44 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
|   | #ifndef INDIRECT_REFERENCE_DWA200415_HPP | ||
|  | # define INDIRECT_REFERENCE_DWA200415_HPP | ||
|  | 
 | ||
|  | // | ||
|  | // Copyright David Abrahams 2004. Use, modification and distribution is | ||
|  | // subject to 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) | ||
|  | // | ||
|  | // typename indirect_reference<P>::type provides the type of *p. | ||
|  | // | ||
|  | // http://www.boost.org/libs/iterator/doc/pointee.html | ||
|  | // | ||
|  | 
 | ||
|  | # include <boost/detail/is_incrementable.hpp> | ||
|  | # include <boost/iterator/iterator_traits.hpp> | ||
|  | # include <boost/type_traits/remove_cv.hpp> | ||
|  | # include <boost/mpl/eval_if.hpp> | ||
|  | # include <boost/pointee.hpp> | ||
|  | 
 | ||
|  | namespace boost { | ||
|  | 
 | ||
|  | namespace detail | ||
|  | { | ||
|  |   template <class P> | ||
|  |   struct smart_ptr_reference | ||
|  |   { | ||
|  |       typedef typename boost::pointee<P>::type& type; | ||
|  |   }; | ||
|  | } | ||
|  | 
 | ||
|  | template <class P> | ||
|  | struct indirect_reference | ||
|  |   : mpl::eval_if< | ||
|  |         detail::is_incrementable<P> | ||
|  |       , iterator_reference<P> | ||
|  |       , detail::smart_ptr_reference<P> | ||
|  |     > | ||
|  | { | ||
|  | }; | ||
|  | 
 | ||
|  | } // namespace boost | ||
|  | 
 | ||
|  | #endif // INDIRECT_REFERENCE_DWA200415_HPP |