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			605 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| //  (C) Copyright Jeremy Siek 1999-2001.
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| //  Copyright (C) 2006 Trustees of Indiana University
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| //  Authors: Douglas Gregor and Jeremy Siek
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| 
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| // Distributed under the Boost Software License, Version 1.0. (See
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| // 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/property_map for documentation.
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| 
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| #ifndef BOOST_PROPERTY_MAP_HPP
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| #define BOOST_PROPERTY_MAP_HPP
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| 
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| #include <boost/assert.hpp>
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| #include <boost/config.hpp>
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| #include <boost/static_assert.hpp>
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| #include <cstddef>
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| #include <boost/detail/iterator.hpp>
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| #include <boost/concept/assert.hpp>
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| #include <boost/concept_check.hpp>
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| #include <boost/concept_archetype.hpp>
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| #include <boost/mpl/assert.hpp>
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| #include <boost/mpl/or.hpp>
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| #include <boost/mpl/and.hpp>
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| #include <boost/mpl/has_xxx.hpp>
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| #include <boost/type_traits/is_same.hpp>
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| 
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| namespace boost {
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| 
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|   //=========================================================================
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|   // property_traits class
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| 
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|   BOOST_MPL_HAS_XXX_TRAIT_DEF(key_type)
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|   BOOST_MPL_HAS_XXX_TRAIT_DEF(value_type)
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|   BOOST_MPL_HAS_XXX_TRAIT_DEF(reference)
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|   BOOST_MPL_HAS_XXX_TRAIT_DEF(category)
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|  
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|   template<class PA>
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|   struct is_property_map :
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|     boost::mpl::and_<
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|       has_key_type<PA>,
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|       has_value_type<PA>,
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|       has_reference<PA>,
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|       has_category<PA>
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|     >
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|   {};
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|  
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|   template <typename PA>
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|   struct default_property_traits {
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|     typedef typename PA::key_type key_type;
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|     typedef typename PA::value_type value_type;
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|     typedef typename PA::reference reference;
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|     typedef typename PA::category   category;
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|   };
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|  
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|   struct null_property_traits {};
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|  
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|   template <typename PA>
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|   struct property_traits :
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|     boost::mpl::if_<is_property_map<PA>,
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|       default_property_traits<PA>,
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|       null_property_traits>::type
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|   {};
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| 
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| #if 0
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|   template <typename PA>
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|   struct property_traits {
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|     typedef typename PA::key_type key_type;
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|     typedef typename PA::value_type value_type; 
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|     typedef typename PA::reference reference;
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|     typedef typename PA::category   category;
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|   };
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| #endif
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| 
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|   //=========================================================================
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|   // property_traits category tags
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| 
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|   namespace detail {
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|     enum ePropertyMapID { READABLE_PA, WRITABLE_PA, 
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|                           READ_WRITE_PA, LVALUE_PA, OP_BRACKET_PA, 
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|                           RAND_ACCESS_ITER_PA, LAST_PA };
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|   }
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|   struct readable_property_map_tag { enum { id = detail::READABLE_PA }; };
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|   struct writable_property_map_tag { enum { id = detail::WRITABLE_PA }; };
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|   struct read_write_property_map_tag :
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|     public readable_property_map_tag,
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|     public writable_property_map_tag
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|   { enum { id = detail::READ_WRITE_PA }; };
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| 
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|   struct lvalue_property_map_tag : public read_write_property_map_tag
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|   { enum { id = detail::LVALUE_PA }; };
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| 
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|   //=========================================================================
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|   // property_traits specialization for pointers
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| 
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|   template <class T>
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|   struct property_traits<T*> {
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|     // BOOST_STATIC_ASSERT(boost::is_same<T, T*>::value && !"Using pointers as property maps is deprecated");
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|     typedef T value_type;
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|     typedef value_type& reference;
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|     typedef std::ptrdiff_t key_type;
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|     typedef lvalue_property_map_tag category;
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|   };
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|   template <class T>
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|   struct property_traits<const T*> {
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|     // BOOST_STATIC_ASSERT(boost::is_same<T, T*>::value && !"Using pointers as property maps is deprecated");
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|     typedef T value_type;
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|     typedef const value_type& reference;
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|     typedef std::ptrdiff_t key_type;
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|     typedef lvalue_property_map_tag category;
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|   };
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| 
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| #if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
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|   // MSVC doesn't have Koenig lookup, so the user has to
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|   // do boost::get() anyways, and the using clause
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|   // doesn't really work for MSVC.
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| } // namespace boost
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| #endif
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| 
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|   // These need to go in global namespace because Koenig
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|   // lookup does not apply to T*.
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| 
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|   // V must be convertible to T
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|   template <class T, class V>
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|   inline void put(T* pa, std::ptrdiff_t k, const V& val) { pa[k] = val;  }
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| 
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|   template <class T>
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|   inline const T& get(const T* pa, std::ptrdiff_t k) { return pa[k]; }
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| 
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| #if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
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| namespace boost {
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|   using ::put;
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|   using ::get;
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| #endif
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| 
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|   //=========================================================================
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|   // concept checks for property maps
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| 
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|   template <class PMap, class Key>
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|   struct ReadablePropertyMapConcept
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|   {
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|     typedef typename property_traits<PMap>::key_type key_type;
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|     typedef typename property_traits<PMap>::reference reference;
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|     typedef typename property_traits<PMap>::category Category;
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|     typedef boost::readable_property_map_tag ReadableTag;
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|     void constraints() {
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|       BOOST_CONCEPT_ASSERT((ConvertibleConcept<Category, ReadableTag>));
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| 
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|       val = get(pmap, k);
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|     }
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|     PMap pmap;
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|     Key k;
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|     typename property_traits<PMap>::value_type val;
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|   };
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|   template <typename KeyArchetype, typename ValueArchetype>
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|   struct readable_property_map_archetype {
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|     typedef KeyArchetype key_type;
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|     typedef ValueArchetype value_type;
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|     typedef convertible_to_archetype<ValueArchetype> reference;
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|     typedef readable_property_map_tag category;
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|   };
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|   template <typename K, typename V>
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|   const typename readable_property_map_archetype<K,V>::reference&
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|   get(const readable_property_map_archetype<K,V>&, 
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|       const typename readable_property_map_archetype<K,V>::key_type&)
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|   {
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|     typedef typename readable_property_map_archetype<K,V>::reference R;
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|     return static_object<R>::get();
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|   }
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| 
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| 
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|   template <class PMap, class Key>
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|   struct WritablePropertyMapConcept
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|   {
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|     typedef typename property_traits<PMap>::key_type key_type;
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|     typedef typename property_traits<PMap>::category Category;
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|     typedef boost::writable_property_map_tag WritableTag;
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|     void constraints() {
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|       BOOST_CONCEPT_ASSERT((ConvertibleConcept<Category, WritableTag>));
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|       put(pmap, k, val);
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|     }
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|     PMap pmap;
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|     Key k;
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|     typename property_traits<PMap>::value_type val;
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|   };
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|   template <typename KeyArchetype, typename ValueArchetype>
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|   struct writable_property_map_archetype {
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|     typedef KeyArchetype key_type;
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|     typedef ValueArchetype value_type;
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|     typedef void reference;
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|     typedef writable_property_map_tag category;
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|   };
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|   template <typename K, typename V>
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|   void put(const writable_property_map_archetype<K,V>&, 
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|            const typename writable_property_map_archetype<K,V>::key_type&, 
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|            const typename writable_property_map_archetype<K,V>::value_type&) { }
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| 
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| 
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|   template <class PMap, class Key>
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|   struct ReadWritePropertyMapConcept
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|   {
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|     typedef typename property_traits<PMap>::category Category;
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|     typedef boost::read_write_property_map_tag ReadWriteTag;
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|     void constraints() {
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|       BOOST_CONCEPT_ASSERT((ReadablePropertyMapConcept<PMap, Key>));
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|       BOOST_CONCEPT_ASSERT((WritablePropertyMapConcept<PMap, Key>));
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|       BOOST_CONCEPT_ASSERT((ConvertibleConcept<Category, ReadWriteTag>));
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|     }
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|   };
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|   template <typename KeyArchetype, typename ValueArchetype>
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|   struct read_write_property_map_archetype
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|     : public readable_property_map_archetype<KeyArchetype, ValueArchetype>,
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|       public writable_property_map_archetype<KeyArchetype, ValueArchetype>
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|   {
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|     typedef KeyArchetype key_type;
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|     typedef ValueArchetype value_type;
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|     typedef convertible_to_archetype<ValueArchetype> reference;
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|     typedef read_write_property_map_tag category;
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|   };
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| 
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| 
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|   template <class PMap, class Key>
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|   struct LvaluePropertyMapConcept
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|   {
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|     typedef typename property_traits<PMap>::category Category;
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|     typedef boost::lvalue_property_map_tag LvalueTag;
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|     typedef typename property_traits<PMap>::reference reference;
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| 
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|     void constraints() {
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|       BOOST_CONCEPT_ASSERT((ReadablePropertyMapConcept<PMap, Key>));
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|       BOOST_CONCEPT_ASSERT((ConvertibleConcept<Category, LvalueTag>));
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| 
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|       typedef typename property_traits<PMap>::value_type value_type;
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|       BOOST_MPL_ASSERT((boost::mpl::or_<
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|                           boost::is_same<const value_type&, reference>,
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|                           boost::is_same<value_type&, reference> >));
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| 
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|       reference ref = pmap[k];
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|       ignore_unused_variable_warning(ref);
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|     }
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|     PMap pmap;
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|     Key k;
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|   };
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|   template <typename KeyArchetype, typename ValueArchetype>
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|   struct lvalue_property_map_archetype
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|     : public readable_property_map_archetype<KeyArchetype, ValueArchetype>
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|   {
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|     typedef KeyArchetype key_type;
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|     typedef ValueArchetype value_type;
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|     typedef const ValueArchetype& reference;
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|     typedef lvalue_property_map_tag category;
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|     const value_type& operator[](const key_type&) const {
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|       return static_object<value_type>::get();
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|     }
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|   };
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| 
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|   template <class PMap, class Key>
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|   struct Mutable_LvaluePropertyMapConcept
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|   {
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|     typedef typename property_traits<PMap>::category Category;
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|     typedef boost::lvalue_property_map_tag LvalueTag;
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|     typedef typename property_traits<PMap>::reference reference;
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|     void constraints() {
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|       BOOST_CONCEPT_ASSERT((ReadWritePropertyMapConcept<PMap, Key>));
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|       BOOST_CONCEPT_ASSERT((ConvertibleConcept<Category, LvalueTag>));
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| 
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|       typedef typename property_traits<PMap>::value_type value_type;
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|       BOOST_MPL_ASSERT((boost::is_same<value_type&, reference>));
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| 
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|       reference ref = pmap[k];
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|       ignore_unused_variable_warning(ref);
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|     }
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|     PMap pmap;
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|     Key k;
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|   };
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|   template <typename KeyArchetype, typename ValueArchetype>
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|   struct mutable_lvalue_property_map_archetype
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|     : public readable_property_map_archetype<KeyArchetype, ValueArchetype>,
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|       public writable_property_map_archetype<KeyArchetype, ValueArchetype>
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|   {
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|     typedef KeyArchetype key_type;
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|     typedef ValueArchetype value_type;
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|     typedef ValueArchetype& reference;
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|     typedef lvalue_property_map_tag category;
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|     value_type& operator[](const key_type&) const { 
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|       return static_object<value_type>::get();
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|     }
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|   };
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| 
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|   template <typename T>
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|   struct typed_identity_property_map;
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| 
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|   // A helper class for constructing a property map
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|   // from a class that implements operator[]
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| 
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|   template <class Reference, class LvaluePropertyMap>
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|   struct put_get_helper { };
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| 
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|   template <class PropertyMap, class Reference, class K>
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|   inline Reference
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|   get(const put_get_helper<Reference, PropertyMap>& pa, const K& k)
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|   {
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|     Reference v = static_cast<const PropertyMap&>(pa)[k];
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|     return v;
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|   }
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|   template <class PropertyMap, class Reference, class K, class V>
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|   inline void
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|   put(const put_get_helper<Reference, PropertyMap>& pa, K k, const V& v)
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|   {
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|     static_cast<const PropertyMap&>(pa)[k] = v;
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|   }
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| 
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|   //=========================================================================
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|   // Adapter to turn a RandomAccessIterator into a property map
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| 
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|   template <class RandomAccessIterator, 
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|     class IndexMap
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| #ifdef BOOST_NO_STD_ITERATOR_TRAITS
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|     , class T, class R
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| #else
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|     , class T = typename std::iterator_traits<RandomAccessIterator>::value_type
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|     , class R = typename std::iterator_traits<RandomAccessIterator>::reference
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| #endif
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|      >
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|   class iterator_property_map
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|     : public boost::put_get_helper< R, 
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|         iterator_property_map<RandomAccessIterator, IndexMap,
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|         T, R> >
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|   {
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|   public:
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|     typedef typename property_traits<IndexMap>::key_type key_type;
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|     typedef T value_type;
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|     typedef R reference;
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|     typedef boost::lvalue_property_map_tag category;
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| 
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|     inline iterator_property_map(
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|       RandomAccessIterator cc = RandomAccessIterator(), 
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|       const IndexMap& _id = IndexMap() ) 
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|       : iter(cc), index(_id) { }
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|     inline R operator[](key_type v) const { return *(iter + get(index, v)) ; }
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|   protected:
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|     RandomAccessIterator iter;
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|     IndexMap index;
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|   };
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| 
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| #if !defined BOOST_NO_STD_ITERATOR_TRAITS
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|   template <class RAIter, class ID>
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|   inline iterator_property_map<
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|     RAIter, ID,
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|     typename std::iterator_traits<RAIter>::value_type,
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|     typename std::iterator_traits<RAIter>::reference>
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|   make_iterator_property_map(RAIter iter, ID id) {
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|     BOOST_CONCEPT_ASSERT((RandomAccessIteratorConcept<RAIter>));
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|     typedef iterator_property_map<
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|       RAIter, ID,
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|       typename std::iterator_traits<RAIter>::value_type,
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|       typename std::iterator_traits<RAIter>::reference> PA;
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|     return PA(iter, id);
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|   }
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| #endif
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|   template <class RAIter, class Value, class ID>
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|   inline iterator_property_map<RAIter, ID, Value, Value&>
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|   make_iterator_property_map(RAIter iter, ID id, Value) {
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|     BOOST_CONCEPT_ASSERT((RandomAccessIteratorConcept<RAIter>));
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|     typedef iterator_property_map<RAIter, ID, Value, Value&> PMap;
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|     return PMap(iter, id);
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|   }
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| 
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|   template <class RandomAccessIterator, 
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|     class IndexMap
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| #ifdef BOOST_NO_STD_ITERATOR_TRAITS
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|     , class T, class R
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| #else
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|     , class T = typename std::iterator_traits<RandomAccessIterator>::value_type
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|     , class R = typename std::iterator_traits<RandomAccessIterator>::reference
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| #endif
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|      >
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|   class safe_iterator_property_map
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|     : public boost::put_get_helper< R, 
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|         safe_iterator_property_map<RandomAccessIterator, IndexMap,
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|         T, R> >
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|   {
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|   public:
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|     typedef typename property_traits<IndexMap>::key_type key_type; 
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|     typedef T value_type;
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|     typedef R reference;
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|     typedef boost::lvalue_property_map_tag category;
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| 
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|     inline safe_iterator_property_map(
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|       RandomAccessIterator first, 
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|       std::size_t n_ = 0, 
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|       const IndexMap& _id = IndexMap() ) 
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|       : iter(first), n(n_), index(_id) { }
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|     inline safe_iterator_property_map() { }
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|     inline R operator[](key_type v) const {
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|       BOOST_ASSERT(get(index, v) < n);
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|       return *(iter + get(index, v)) ;
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|     }
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|     typename property_traits<IndexMap>::value_type size() const { return n; }
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|   protected:
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|     RandomAccessIterator iter;
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|     typename property_traits<IndexMap>::value_type n;
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|     IndexMap index;
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|   };
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| 
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|   template <class RAIter, class ID>
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|   inline safe_iterator_property_map<
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|     RAIter, ID,
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|     typename boost::detail::iterator_traits<RAIter>::value_type,
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|     typename boost::detail::iterator_traits<RAIter>::reference>
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|   make_safe_iterator_property_map(RAIter iter, std::size_t n, ID id) {
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|     BOOST_CONCEPT_ASSERT((RandomAccessIteratorConcept<RAIter>));
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|     typedef safe_iterator_property_map<
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|       RAIter, ID,
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|       typename boost::detail::iterator_traits<RAIter>::value_type,
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|       typename boost::detail::iterator_traits<RAIter>::reference> PA;
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|     return PA(iter, n, id);
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|   }
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|   template <class RAIter, class Value, class ID>
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|   inline safe_iterator_property_map<RAIter, ID, Value, Value&>
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|   make_safe_iterator_property_map(RAIter iter, std::size_t n, ID id, Value) {
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|     BOOST_CONCEPT_ASSERT((RandomAccessIteratorConcept<RAIter>));
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|     typedef safe_iterator_property_map<RAIter, ID, Value, Value&> PMap;
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|     return PMap(iter, n, id);
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|   }
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| 
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|   //=========================================================================
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|   // An adaptor to turn a Unique Pair Associative Container like std::map or
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|   // std::hash_map into an Lvalue Property Map.
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| 
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|   template <typename UniquePairAssociativeContainer>
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|   class associative_property_map
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|     : public boost::put_get_helper<
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|        typename UniquePairAssociativeContainer::value_type::second_type&,
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|        associative_property_map<UniquePairAssociativeContainer> >
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|   {
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|     typedef UniquePairAssociativeContainer C;
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|   public:
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|     typedef typename C::key_type key_type;
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|     typedef typename C::value_type::second_type value_type;
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|     typedef value_type& reference;
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|     typedef lvalue_property_map_tag category;
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|     associative_property_map() : m_c(0) { }
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|     associative_property_map(C& c) : m_c(&c) { }
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|     reference operator[](const key_type& k) const {
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|       return (*m_c)[k];
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|     }
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|   private:
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|     C* m_c;
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|   };
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| 
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|   template <class UniquePairAssociativeContainer>
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|   associative_property_map<UniquePairAssociativeContainer>
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|   make_assoc_property_map(UniquePairAssociativeContainer& c)
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|   {
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|     return associative_property_map<UniquePairAssociativeContainer>(c);
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|   }
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| 
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|   template <typename UniquePairAssociativeContainer>
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|   class const_associative_property_map
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|     : public boost::put_get_helper<
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|        const typename UniquePairAssociativeContainer::value_type::second_type&,
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|        const_associative_property_map<UniquePairAssociativeContainer> >
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|   {
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|     typedef UniquePairAssociativeContainer C;
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|   public:
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|     typedef typename C::key_type key_type;
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|     typedef typename C::value_type::second_type value_type;
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|     typedef const value_type& reference;
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|     typedef lvalue_property_map_tag category;
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|     const_associative_property_map() : m_c(0) { }
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|     const_associative_property_map(const C& c) : m_c(&c) { }
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|     reference operator[](const key_type& k) const {
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|       return m_c->find(k)->second;
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|     }
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|   private:
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|     C const* m_c;
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|   };
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|   
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|   template <class UniquePairAssociativeContainer>
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|   const_associative_property_map<UniquePairAssociativeContainer>
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|   make_assoc_property_map(const UniquePairAssociativeContainer& c)
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|   {
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|     return const_associative_property_map<UniquePairAssociativeContainer>(c);
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|   }
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| 
 | |
|   //=========================================================================
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|   // A property map that always returns the same object by value.
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|   //
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|   template <typename ValueType, typename KeyType = void>
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|   class static_property_map :
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|       public
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|   boost::put_get_helper<ValueType,static_property_map<ValueType> >
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|   { 
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|     ValueType value;
 | |
|   public:
 | |
|     typedef KeyType key_type;
 | |
|     typedef ValueType value_type;
 | |
|     typedef ValueType reference;
 | |
|     typedef readable_property_map_tag category;
 | |
|     static_property_map(ValueType v) : value(v) {}
 | |
|     
 | |
|     template<typename T>
 | |
|     inline reference operator[](T) const { return value; }
 | |
|   };
 | |
| 
 | |
|   template <typename KeyType, typename ValueType>
 | |
|   static_property_map<ValueType, KeyType>
 | |
|   make_static_property_map(const ValueType& v) {
 | |
|     return static_property_map<ValueType, KeyType>(v);
 | |
|   }
 | |
| 
 | |
|   //=========================================================================
 | |
|   // A property map that always returns a reference to the same object.
 | |
|   //
 | |
|   template <typename KeyType, typename ValueType>
 | |
|   class ref_property_map :
 | |
|     public
 | |
|       boost::put_get_helper<ValueType&,ref_property_map<KeyType,ValueType> >
 | |
|   { 
 | |
|     ValueType* value;
 | |
|   public:
 | |
|     typedef KeyType key_type;
 | |
|     typedef ValueType value_type;
 | |
|     typedef ValueType& reference;
 | |
|     typedef lvalue_property_map_tag category;
 | |
|     ref_property_map(ValueType& v) : value(&v) {}
 | |
|     ValueType& operator[](key_type const&) const { return *value; }
 | |
|   };
 | |
| 
 | |
|   //=========================================================================
 | |
|   // A generalized identity property map
 | |
|   template <typename T>
 | |
|   struct typed_identity_property_map
 | |
|     : public boost::put_get_helper<T, typed_identity_property_map<T> >
 | |
|   {
 | |
|     typedef T key_type;
 | |
|     typedef T value_type;
 | |
|     typedef T reference;
 | |
|     typedef boost::readable_property_map_tag category;
 | |
| 
 | |
|     inline value_type operator[](const key_type& v) const { return v; }
 | |
|   };
 | |
| 
 | |
| //=========================================================================
 | |
|   // A property map that applies the identity function to integers
 | |
|   typedef typed_identity_property_map<std::size_t> identity_property_map;
 | |
| 
 | |
|   //=========================================================================
 | |
|   // A property map that does not do anything, for
 | |
|   // when you have to supply a property map, but don't need it.
 | |
|   namespace detail {
 | |
|     struct dummy_pmap_reference {
 | |
|       template <class T>
 | |
|       dummy_pmap_reference& operator=(const T&) { return *this; }
 | |
|       operator int() { return 0; }
 | |
|     };
 | |
|   }
 | |
|   class dummy_property_map 
 | |
|     : public boost::put_get_helper<detail::dummy_pmap_reference,
 | |
|         dummy_property_map  > 
 | |
|   {
 | |
|   public:
 | |
|     typedef void key_type; 
 | |
|     typedef int value_type;
 | |
|     typedef detail::dummy_pmap_reference reference;
 | |
|     typedef boost::read_write_property_map_tag category;
 | |
|     inline dummy_property_map() : c(0) { }
 | |
|     inline dummy_property_map(value_type cc) : c(cc) { }
 | |
|     inline dummy_property_map(const dummy_property_map& x)
 | |
|       : c(x.c) { }
 | |
|     template <class Vertex>
 | |
|     inline reference operator[](Vertex) const { return reference(); }
 | |
|    protected:
 | |
|     value_type c;
 | |
|   };
 | |
| 
 | |
|   // Convert a Readable property map into a function object
 | |
|   template <typename PropMap>
 | |
|   class property_map_function {
 | |
|     PropMap pm;
 | |
|     typedef typename property_traits<PropMap>::key_type param_type;
 | |
|     public:
 | |
|     explicit property_map_function(const PropMap& pm): pm(pm) {}
 | |
|     typedef typename property_traits<PropMap>::value_type result_type;
 | |
|     result_type operator()(const param_type& k) const {return get(pm, k);}
 | |
|   };
 | |
| 
 | |
|   template <typename PropMap>
 | |
|   property_map_function<PropMap>
 | |
|   make_property_map_function(const PropMap& pm) {
 | |
|     return property_map_function<PropMap>(pm);
 | |
|   }
 | |
| 
 | |
| } // namespace boost
 | |
| 
 | |
| #ifdef BOOST_GRAPH_USE_MPI
 | |
| #include <boost/property_map/parallel/parallel_property_maps.hpp>
 | |
| #endif
 | |
| 
 | |
| #include <boost/property_map/vector_property_map.hpp>
 | |
| 
 | |
| #endif /* BOOST_PROPERTY_MAP_HPP */
 | |
| 
 | 
