/*-----------------------------------------------------------------------------+ | |
Copyright (c) 2007-2010: Joachim Faulhaber | |
+------------------------------------------------------------------------------+ | |
Distributed under the Boost Software License, Version 1.0. | |
(See accompanying file LICENCE.txt or copy at | |
http://www.boost.org/LICENSE_1_0.txt) | |
+-----------------------------------------------------------------------------*/ | |
#ifndef BOOST_ICL_MAPALGO_HPP_JOFA_080225 | |
#define BOOST_ICL_MAPALGO_HPP_JOFA_080225 | |
#include <boost/mpl/and.hpp> | |
#include <boost/mpl/or.hpp> | |
#include <boost/mpl/not.hpp> | |
#include <boost/icl/detail/notate.hpp> | |
#include <boost/icl/detail/set_algo.hpp> | |
#ifdef BOOST_MSVC | |
#pragma warning(push) | |
#pragma warning(disable:4127) // conditional expression is constant | |
#endif | |
namespace boost{namespace icl | |
{ | |
namespace Map | |
{ | |
template <class ObjectT, class CoObjectT> | |
bool intersects(const ObjectT& left, const CoObjectT& right) | |
{ | |
typedef typename CoObjectT::const_iterator co_iterator; | |
co_iterator right_common_lower_, right_common_upper_; | |
if(!Set::common_range(right_common_lower_, right_common_upper_, right, left)) | |
return false; | |
co_iterator right_ = right_common_lower_; | |
while(right_ != right_common_upper_) | |
if(!(left.find(key_value<CoObjectT>(right_++))==left.end())) | |
return true; | |
return false; | |
} | |
template<class MapT> | |
typename MapT::const_iterator next_proton(typename MapT::const_iterator& iter_, const MapT& object) | |
{ | |
while( iter_ != object.end() | |
&& iter_->second == identity_element<typename MapT::codomain_type>::value()) | |
++iter_; | |
return iter_; | |
} | |
/** Function template <tt>lexicographical_equal</tt> implements | |
lexicographical equality except for identity_elementic content values. */ | |
template<class MapT> | |
bool lexicographical_distinct_equal(const MapT& left, const MapT& right) | |
{ | |
if(&left == &right) | |
return true; | |
typename MapT::const_iterator left_ = left.begin(); | |
typename MapT::const_iterator right_ = right.begin(); | |
left_ = next_proton(left_, left); | |
right_ = next_proton(right_, right); | |
while(left_ != left.end() && right_ != right.end()) | |
{ | |
if(!(left_->first == right_->first && left_->second == right_->second)) | |
return false; | |
++left_; | |
++right_; | |
left_ = next_proton(left_, left); | |
right_ = next_proton(right_, right); | |
} | |
return left_ == left.end() && right_ == right.end(); | |
} | |
} // namespace Map | |
}} // namespace boost icl | |
#ifdef BOOST_MSVC | |
#pragma warning(pop) | |
#endif | |
#endif | |