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