119 lines
4.4 KiB
C++
119 lines
4.4 KiB
C++
/*-----------------------------------------------------------------------------+
|
|
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(ICL_COMPARE_DEFAULT, DomainT)>
|
|
class right_open_interval
|
|
{
|
|
public:
|
|
typedef right_open_interval<DomainT,Compare> type;
|
|
typedef DomainT domain_type;
|
|
typedef ICL_COMPARE_DOMAIN(Compare,DomainT) domain_compare;
|
|
|
|
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::successor<DomainT,domain_compare>::apply(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>&)
|
|
{ return 2; }
|
|
};
|
|
|
|
}} // namespace icl boost
|
|
|
|
#endif
|
|
|