/*-----------------------------------------------------------------------------+ Copyright (c) 2010-2010: 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_CONTINUOUS_INTERVAL_HPP_JOFA_100327 #define BOOST_ICL_CONTINUOUS_INTERVAL_HPP_JOFA_100327 #include <functional> #include <boost/static_assert.hpp> #include <boost/concept/assert.hpp> #include <boost/icl/detail/concept_check.hpp> #include <boost/icl/concept/interval.hpp> #include <boost/icl/concept/container.hpp> #include <boost/icl/type_traits/value_size.hpp> #include <boost/icl/type_traits/type_to_string.hpp> #include <boost/icl/type_traits/is_continuous.hpp> #include <boost/icl/type_traits/is_continuous_interval.hpp> #include <boost/icl/interval_bounds.hpp> namespace boost{namespace icl { template <class DomainT, ICL_COMPARE Compare = ICL_COMPARE_INSTANCE(ICL_COMPARE_DEFAULT, DomainT)> class continuous_interval { public: typedef continuous_interval<DomainT,Compare> type; typedef DomainT domain_type; typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare; typedef typename bounded_value<DomainT>::type bounded_domain_type; public: //========================================================================== //= Construct, copy, destruct //========================================================================== /** Default constructor; yields an empty interval <tt>[0,0)</tt>. */ continuous_interval() : _lwb(identity_element<DomainT>::value()), _upb(identity_element<DomainT>::value()) , _bounds(interval_bounds::right_open()) { BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>)); BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>)); BOOST_STATIC_ASSERT((icl::is_continuous<DomainT>::value)); } //NOTE: Compiler generated copy constructor is used /** Constructor for a closed singleton interval <tt>[val,val]</tt> */ explicit continuous_interval(const DomainT& val) : _lwb(val), _upb(val), _bounds(interval_bounds::closed()) { BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>)); BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>)); BOOST_STATIC_ASSERT((icl::is_continuous<DomainT>::value)); } /** Interval from <tt>low</tt> to <tt>up</tt> with bounds <tt>bounds</tt> */ continuous_interval(const DomainT& low, const DomainT& up, interval_bounds bounds = interval_bounds::right_open(), continuous_interval* = 0) : _lwb(low), _upb(up), _bounds(bounds) { BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>)); BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>)); BOOST_STATIC_ASSERT((icl::is_continuous<DomainT>::value)); } domain_type lower()const { return _lwb; } domain_type upper()const { return _upb; } interval_bounds bounds()const{ return _bounds; } static continuous_interval open (const DomainT& lo, const DomainT& up){ return continuous_interval(lo, up, interval_bounds::open()); } static continuous_interval right_open(const DomainT& lo, const DomainT& up){ return continuous_interval(lo, up, interval_bounds::right_open());} static continuous_interval left_open (const DomainT& lo, const DomainT& up){ return continuous_interval(lo, up, interval_bounds::left_open()); } static continuous_interval closed (const DomainT& lo, const DomainT& up){ return continuous_interval(lo, up, interval_bounds::closed()); } private: domain_type _lwb; domain_type _upb; interval_bounds _bounds; }; //============================================================================== //=T continuous_interval -> concept interval //============================================================================== template<class DomainT, ICL_COMPARE Compare> struct interval_traits< icl::continuous_interval<DomainT, Compare> > { typedef interval_traits type; typedef DomainT domain_type; typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare; typedef icl::continuous_interval<DomainT, Compare> interval_type; static interval_type construct(const domain_type& lo, const domain_type& up) { return interval_type(lo, up); } static domain_type lower(const interval_type& inter_val){ return inter_val.lower(); } static domain_type upper(const interval_type& inter_val){ return inter_val.upper(); } }; //============================================================================== //=T continuous_interval -> concept dynamic_interval //============================================================================== template<class DomainT, ICL_COMPARE Compare> struct dynamic_interval_traits<boost::icl::continuous_interval<DomainT,Compare> > { typedef dynamic_interval_traits type; typedef boost::icl::continuous_interval<DomainT,Compare> interval_type; typedef DomainT domain_type; typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare; static interval_type construct(const domain_type lo, const domain_type up, interval_bounds bounds) { return icl::continuous_interval<DomainT,Compare>(lo, up, bounds, static_cast<icl::continuous_interval<DomainT,Compare>* >(0) ); } static interval_type construct_bounded(const bounded_value<DomainT>& lo, const bounded_value<DomainT>& up) { return icl::continuous_interval<DomainT,Compare> ( lo.value(), up.value(), lo.bound().left() | up.bound().right(), static_cast<icl::continuous_interval<DomainT,Compare>* >(0) ); } }; //============================================================================== //= Type traits //============================================================================== template <class DomainT, ICL_COMPARE Compare> struct interval_bound_type< continuous_interval<DomainT,Compare> > { typedef interval_bound_type type; BOOST_STATIC_CONSTANT(bound_type, value = interval_bounds::dynamic); }; template <class DomainT, ICL_COMPARE Compare> struct is_continuous_interval<continuous_interval<DomainT,Compare> > { typedef is_continuous_interval<continuous_interval<DomainT,Compare> > type; BOOST_STATIC_CONSTANT(bool, value = true); }; template <class DomainT, ICL_COMPARE Compare> struct type_to_string<icl::continuous_interval<DomainT,Compare> > { static std::string apply() { return "cI<"+ type_to_string<DomainT>::apply() +">"; } }; template<class DomainT> struct value_size<icl::continuous_interval<DomainT> > { static std::size_t apply(const icl::continuous_interval<DomainT>&) { return 2; } }; }} // namespace icl boost #endif