/*-----------------------------------------------------------------------------+ | |
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_RIGHT_OPEN_INTERVAL_HPP_JOFA_100323 | |
#define BOOST_ICL_RIGHT_OPEN_INTERVAL_HPP_JOFA_100323 | |
#include <functional> | |
#include <boost/concept/assert.hpp> | |
#include <boost/icl/concept/interval.hpp> | |
#include <boost/icl/type_traits/succ_pred.hpp> | |
#include <boost/icl/type_traits/value_size.hpp> | |
#include <boost/icl/type_traits/type_to_string.hpp> | |
namespace boost{namespace icl | |
{ | |
template <class DomainT, | |
ICL_COMPARE Compare = ICL_COMPARE_INSTANCE(std::less, DomainT)> | |
class right_open_interval | |
{ | |
public: | |
typedef right_open_interval<DomainT,Compare> type; | |
typedef DomainT domain_type; | |
public: | |
//========================================================================== | |
//= Construct, copy, destruct | |
//========================================================================== | |
/** Default constructor; yields an empty interval <tt>[0,0)</tt>. */ | |
right_open_interval() | |
: _lwb(identity_element<DomainT>::value()), _upb(identity_element<DomainT>::value()) | |
{ | |
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>)); | |
BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>)); | |
} | |
//NOTE: Compiler generated copy constructor is used | |
/** Constructor for a singleton interval <tt>[val,val+1)</tt> */ | |
explicit right_open_interval(const DomainT& val) | |
: _lwb(val), _upb(icl::succ(val)) | |
{ | |
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>)); | |
BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>)); | |
// Only for discrete types this ctor creates an interval containing | |
// a single element only. | |
BOOST_STATIC_ASSERT((icl::is_discrete<DomainT>::value)); | |
} | |
/** Interval from <tt>low</tt> to <tt>up</tt> with bounds <tt>bounds</tt> */ | |
right_open_interval(const DomainT& low, const DomainT& up) : | |
_lwb(low), _upb(up) | |
{ | |
BOOST_CONCEPT_ASSERT((DefaultConstructibleConcept<DomainT>)); | |
BOOST_CONCEPT_ASSERT((LessThanComparableConcept<DomainT>)); | |
} | |
domain_type lower()const{ return _lwb; } | |
domain_type upper()const{ return _upb; } | |
private: | |
domain_type _lwb; | |
domain_type _upb; | |
}; | |
//============================================================================== | |
//=T right_open_interval -> concept intervals | |
//============================================================================== | |
template<class DomainT, ICL_COMPARE Compare> | |
struct interval_traits< icl::right_open_interval<DomainT, Compare> > | |
{ | |
typedef DomainT domain_type; | |
typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare; | |
typedef icl::right_open_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(); }; | |
}; | |
//============================================================================== | |
//= Type traits | |
//============================================================================== | |
template <class DomainT, ICL_COMPARE Compare> | |
struct interval_bound_type< right_open_interval<DomainT,Compare> > | |
{ | |
typedef interval_bound_type type; | |
BOOST_STATIC_CONSTANT(bound_type, value = interval_bounds::static_right_open); | |
}; | |
template <class DomainT, ICL_COMPARE Compare> | |
struct type_to_string<icl::right_open_interval<DomainT,Compare> > | |
{ | |
static std::string apply() | |
{ return "[I)<"+ type_to_string<DomainT>::apply() +">"; } | |
}; | |
template<class DomainT, ICL_COMPARE Compare> | |
struct value_size<icl::right_open_interval<DomainT,Compare> > | |
{ | |
static std::size_t apply(const icl::right_open_interval<DomainT>& value) | |
{ return 2; } | |
}; | |
}} // namespace icl boost | |
#endif | |