137 lines
6.0 KiB
C++
137 lines
6.0 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_INTERVAL_HPP_JOFA_101014
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#define BOOST_ICL_INTERVAL_HPP_JOFA_101014
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#include <boost/icl/type_traits/interval_type_default.hpp>
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namespace boost{ namespace icl
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{
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template <class IntervalT, bool IsDiscrete, bound_type PretendedBounds, bound_type RepresentedBounds>
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struct static_interval;
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template <class DomainT, ICL_COMPARE Compare = ICL_COMPARE_INSTANCE(ICL_COMPARE_DEFAULT, DomainT)>
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struct interval
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{
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typedef typename interval_type_default<DomainT,Compare>::type interval_type;
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typedef interval_type type;
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#ifdef BOOST_ICL_USE_STATIC_BOUNDED_INTERVALS
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static inline interval_type open(const DomainT& low, const DomainT& up)
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{
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return
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static_interval
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< interval_type // if the domain_type is discrete ...
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, is_discrete<typename interval_traits<interval_type>::domain_type>::value
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, interval_bounds::static_open // 'pretended' bounds will be transformed to
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, interval_bound_type<interval_type>::value // the represented bounds
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>
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::construct(low, up);
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}
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static inline interval_type left_open(const DomainT& low, const DomainT& up)
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{
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return
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static_interval
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< interval_type
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, is_discrete<typename interval_traits<interval_type>::domain_type>::value
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, interval_bounds::static_left_open
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, interval_bound_type<interval_type>::value
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>
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::construct(low, up);
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}
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static inline interval_type right_open(const DomainT& low, const DomainT& up)
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{
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return
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static_interval
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< interval_type
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, is_discrete<typename interval_traits<interval_type>::domain_type>::value
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, interval_bounds::static_right_open
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, interval_bound_type<interval_type>::value
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>
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::construct(low, up);
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}
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static inline interval_type closed(const DomainT& low, const DomainT& up)
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{
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return
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static_interval
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< interval_type
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, is_discrete<typename interval_traits<interval_type>::domain_type>::value
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, interval_bounds::static_closed
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, interval_bound_type<interval_type>::value
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>
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::construct(low, up);
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}
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static inline interval_type construct(const DomainT& low, const DomainT& up)
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{ return icl::construct<interval_type>(low, up); }
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#else // ICL_USE_DYNAMIC_INTERVAL_BORDER_DEFAULTS
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static inline interval_type right_open(const DomainT& low, const DomainT& up)
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{ return icl::construct<interval_type>(low, up, interval_bounds::right_open()); }
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static inline interval_type left_open(const DomainT& low, const DomainT& up)
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{ return icl::construct<interval_type>(low, up, interval_bounds::left_open()); }
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static inline interval_type open(const DomainT& low, const DomainT& up)
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{ return icl::construct<interval_type>(low, up, interval_bounds::open()); }
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static inline interval_type closed(const DomainT& low, const DomainT& up)
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{ return icl::construct<interval_type>(low, up, interval_bounds::closed()); }
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static inline interval_type construct(const DomainT& low, const DomainT& up)
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{ return icl::construct<interval_type>(low, up); }
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#endif
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};
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template <class IntervalT, bound_type PretendedBounds, bound_type RepresentedBounds>
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struct static_interval<IntervalT, true, PretendedBounds, RepresentedBounds>
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{// is_discrete<domain_type<IntervalT>>
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typedef typename interval_traits<IntervalT>::domain_type domain_type;
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static inline IntervalT construct(const domain_type& low, const domain_type& up)
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{
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return icl::construct<IntervalT>(
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shift_lower(interval_bounds(PretendedBounds), interval_bounds(RepresentedBounds), low)
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, shift_upper(interval_bounds(PretendedBounds), interval_bounds(RepresentedBounds), up )
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);
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}
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};
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template <class IntervalT, bound_type PretendedBounds, bound_type RepresentedBounds>
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struct static_interval<IntervalT, false, PretendedBounds, RepresentedBounds>
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{// !is_discrete<domain_type<IntervalT>>
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typedef typename interval_traits<IntervalT>::domain_type domain_type;
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static inline IntervalT construct(const domain_type& low, const domain_type& up)
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{
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BOOST_STATIC_ASSERT((is_discrete<domain_type>::value || PretendedBounds==RepresentedBounds));
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// For domain_types that are not discrete, e.g. interval<float>
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// one of the following must hold: If you call
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// interval<T>::right_open(x,y) then interval<T>::type must be static_right_open
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// interval<T>::left_open(x,y) then interval<T>::type must be static_left_open
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// interval<T>::open(x,y) then interval<T>::type must be static_open
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// interval<T>::closed(x,y) then interval<T>::type must be static_closed
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// Conversion between 'PretendedBounds' and 'RepresentedBounds' is only possible
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// for discrete domain_types.
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return icl::construct<IntervalT>(low, up);
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}
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};
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}} // namespace boost icl
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#endif // BOOST_ICL_INTERVAL_HPP_JOFA_101014
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