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149 lines
6.2 KiB
149 lines
6.2 KiB
/*-----------------------------------------------------------------------------+ |
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Copyright (c) 2011-2011: Joachim Faulhaber |
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+------------------------------------------------------------------------------+ |
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Distributed under the Boost Software License, Version 1.0. |
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(See accompanying file LICENCE.txt or copy at |
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http://www.boost.org/LICENSE_1_0.txt) |
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+-----------------------------------------------------------------------------*/ |
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#ifndef BOOST_ICL_CONCEPT_INTERVAL_ASSOCIATOR_BASE_HPP_JOFA_110301 |
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#define BOOST_ICL_CONCEPT_INTERVAL_ASSOCIATOR_BASE_HPP_JOFA_110301 |
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#include <boost/icl/type_traits/domain_type_of.hpp> |
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#include <boost/icl/type_traits/interval_type_of.hpp> |
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#include <boost/icl/type_traits/is_combinable.hpp> |
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#include <boost/icl/concept/set_value.hpp> |
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#include <boost/icl/concept/map_value.hpp> |
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#include <boost/icl/concept/interval.hpp> |
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namespace boost{ namespace icl |
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{ |
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//============================================================================== |
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//= Selection<IntervalSet|IntervalMap> |
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//============================================================================== |
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template<class Type> inline |
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typename enable_if<mpl::and_< is_interval_container<Type> |
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, is_discrete<typename domain_type_of<Type>::type> |
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> |
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, typename Type::const_iterator>::type |
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find(const Type& object, const typename domain_type_of<Type>::type& key_val) |
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{ |
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typedef typename Type::const_iterator const_iterator; |
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typedef typename Type::interval_type interval_type; |
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return object.find(icl::detail::unit_trail<interval_type>(key_val)); |
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} |
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template<class Type> inline |
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typename enable_if<mpl::and_< is_interval_container<Type> |
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, is_continuous<typename domain_type_of<Type>::type> |
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, has_dynamic_bounds<typename interval_type_of<Type>::type> |
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> |
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, typename Type::const_iterator>::type |
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find(const Type& object, const typename domain_type_of<Type>::type& key_val) |
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{ |
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typedef typename Type::const_iterator const_iterator; |
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typedef typename Type::interval_type interval_type; |
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return object.find(icl::singleton<interval_type>(key_val)); |
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} |
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template<class Type> inline |
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typename enable_if<mpl::and_< is_interval_container<Type> |
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, is_continuous<typename domain_type_of<Type>::type> |
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, is_static_right_open<typename interval_type_of<Type>::type> |
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, boost::detail::is_incrementable<typename domain_type_of<Type>::type> |
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> |
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, typename Type::const_iterator>::type |
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find(const Type& object, const typename domain_type_of<Type>::type& key_val) |
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{ |
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typedef typename Type::const_iterator const_iterator; |
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typedef typename Type::interval_type interval_type; |
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const_iterator first_collision = object.lower_bound(icl::detail::unit_trail<interval_type>(key_val)); |
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// A part of the unit_trail(key_value)-interval may be found in the container, that |
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// does not contain key_value. Therefore we have to check for its existence: |
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return ( first_collision == object.end() |
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|| icl::contains(key_value<Type>(first_collision), key_val) ) |
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? first_collision |
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: object.end(); |
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} |
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template<class Type> inline |
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typename enable_if<mpl::and_< is_interval_container<Type> |
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, is_continuous<typename domain_type_of<Type>::type> |
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, is_static_left_open<typename interval_type_of<Type>::type> |
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, boost::detail::is_incrementable<typename domain_type_of<Type>::type> |
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> |
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, typename Type::const_iterator>::type |
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find(const Type& object, const typename domain_type_of<Type>::type& key_val) |
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{ |
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typedef typename Type::const_iterator const_iterator; |
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typedef typename Type::interval_type interval_type; |
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const_iterator last_collision = object.upper_bound(icl::detail::unit_trail<interval_type>(key_val)); |
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if(last_collision != object.begin()) |
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--last_collision; |
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// A part of the unit_trail(key_value)-interval may be found in the container, that |
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// does not contain key_value. Therefore we have to check for its existence: |
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return ( last_collision == object.end() |
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|| icl::contains(key_value<Type>(last_collision), key_val) ) |
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? last_collision |
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: object.end(); |
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} |
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// NOTE: find(object, key) won't compile if key is of continuous type that does |
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// not implement in(de)crementation (e.g. std::string). |
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template<class Type> inline |
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typename enable_if< is_interval_container<Type> |
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, typename Type::const_iterator>::type |
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find(const Type& object, const typename interval_type_of<Type>::type& inter_val) |
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{ |
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return object.find(inter_val); |
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} |
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//============================================================================== |
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//= Morphisms |
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//============================================================================== |
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template<class Type> |
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typename enable_if<is_interval_container<Type>, Type>::type& |
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join(Type& object) |
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{ |
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typedef typename Type::interval_type interval_type; |
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typedef typename Type::iterator iterator; |
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iterator it_ = object.begin(); |
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if(it_ == object.end()) |
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return object; |
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iterator next_ = it_; next_++; |
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while(next_ != object.end()) |
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{ |
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if( segmental::is_joinable<Type>(it_, next_) ) |
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{ |
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iterator fst_mem = it_; // hold the first member |
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// Go on while touching members are found |
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it_++; next_++; |
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while( next_ != object.end() |
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&& segmental::is_joinable<Type>(it_, next_) ) |
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{ it_++; next_++; } |
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// finally we arrive at the end of a sequence of joinable intervals |
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// and it points to the last member of that sequence |
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const_cast<interval_type&>(key_value<Type>(it_)) |
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= hull(key_value<Type>(it_), key_value<Type>(fst_mem)); |
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object.erase(fst_mem, it_); |
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it_++; next_=it_; |
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if(next_!=object.end()) |
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next_++; |
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} |
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else { it_++; next_++; } |
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} |
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return object; |
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} |
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}} // namespace boost icl |
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#endif |
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