| /*-----------------------------------------------------------------------------+ |
| 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_DISCRETE_INTERVAL_HPP_JOFA_100403 |
| #define BOOST_ICL_DISCRETE_INTERVAL_HPP_JOFA_100403 |
| |
| #include <functional> |
| #include <boost/static_assert.hpp> |
| #include <boost/concept/assert.hpp> |
| #include <boost/icl/detail/concept_check.hpp> |
| #include <boost/icl/type_traits/succ_pred.hpp> |
| #include <boost/icl/concept/interval.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_discrete_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 discrete_interval |
| { |
| public: |
| typedef discrete_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>. */ |
| discrete_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_discrete<DomainT>::value)); |
| } |
| |
| //NOTE: Compiler generated copy constructor is used |
| |
| /** Constructor for a closed singleton interval <tt>[val,val]</tt> */ |
| explicit discrete_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_discrete<DomainT>::value)); |
| } |
| |
| /** Interval from <tt>low</tt> to <tt>up</tt> with bounds <tt>bounds</tt> */ |
| discrete_interval(const DomainT& low, const DomainT& up, |
| interval_bounds bounds = interval_bounds::right_open(), |
| discrete_interval* = 0) |
| : _lwb(low), _upb(up), _bounds(bounds) |
| { |
| BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>)); |
| BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>)); |
| BOOST_STATIC_ASSERT((icl::is_discrete<DomainT>::value)); |
| } |
| |
| domain_type lower()const { return _lwb; } |
| domain_type upper()const { return _upb; } |
| interval_bounds bounds()const{ return _bounds; } |
| |
| static discrete_interval open (const DomainT& lo, const DomainT& up){ return discrete_interval(lo, up, interval_bounds::open()); } |
| static discrete_interval right_open(const DomainT& lo, const DomainT& up){ return discrete_interval(lo, up, interval_bounds::right_open());} |
| static discrete_interval left_open (const DomainT& lo, const DomainT& up){ return discrete_interval(lo, up, interval_bounds::left_open()); } |
| static discrete_interval closed (const DomainT& lo, const DomainT& up){ return discrete_interval(lo, up, interval_bounds::closed()); } |
| |
| private: |
| domain_type _lwb; |
| domain_type _upb; |
| interval_bounds _bounds; |
| }; |
| |
| //============================================================================== |
| //=T discrete_interval -> concept intervals |
| //============================================================================== |
| template<class DomainT, ICL_COMPARE Compare> |
| struct interval_traits< icl::discrete_interval<DomainT, Compare> > |
| { |
| typedef interval_traits type; |
| typedef DomainT domain_type; |
| typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare; |
| typedef icl::discrete_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 discrete_interval -> concept dynamic_interval_traits |
| //============================================================================== |
| template<class DomainT, ICL_COMPARE Compare> |
| struct dynamic_interval_traits<boost::icl::discrete_interval<DomainT,Compare> > |
| { |
| typedef dynamic_interval_traits type; |
| typedef boost::icl::discrete_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 interval_type(lo, up, bounds, static_cast<interval_type*>(0) ); |
| } |
| |
| static interval_type construct_bounded(const bounded_value<DomainT>& lo, |
| const bounded_value<DomainT>& up) |
| { |
| return interval_type |
| ( |
| lo.value(), up.value(), |
| lo.bound().left() | up.bound().right(), |
| static_cast<interval_type* >(0) |
| ); |
| } |
| }; |
| |
| //============================================================================== |
| //= Type traits |
| //============================================================================== |
| template <class DomainT, ICL_COMPARE Compare> |
| struct interval_bound_type< discrete_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_discrete_interval<discrete_interval<DomainT,Compare> > |
| { |
| typedef is_discrete_interval<discrete_interval<DomainT,Compare> > type; |
| BOOST_STATIC_CONSTANT(bool, value = is_discrete<DomainT>::value); |
| }; |
| |
| template <class DomainT, ICL_COMPARE Compare> |
| struct type_to_string<icl::discrete_interval<DomainT,Compare> > |
| { |
| static std::string apply() |
| { return "dI<"+ type_to_string<DomainT>::apply() +">"; } |
| }; |
| |
| template<class DomainT> |
| struct value_size<icl::discrete_interval<DomainT> > |
| { |
| static std::size_t apply(const icl::discrete_interval<DomainT>&) |
| { return 2; } |
| }; |
| |
| }} // namespace icl boost |
| |
| #endif |
| |