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ext-boost/boost/icl/concept/interval_map.hpp
tfarley 3bf6369aa9 Add boost::icl::interval_map
2016-03-02 00:27:27 -05:00

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/*-----------------------------------------------------------------------------+
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_CONCEPT_INTERVAL_MAP_HPP_JOFA_100920
#define BOOST_ICL_CONCEPT_INTERVAL_MAP_HPP_JOFA_100920
#include <boost/icl/type_traits/element_type_of.hpp>
#include <boost/icl/type_traits/segment_type_of.hpp>
#include <boost/icl/type_traits/absorbs_identities.hpp>
#include <boost/icl/type_traits/is_combinable.hpp>
#include <boost/icl/type_traits/is_interval_splitter.hpp>
#include <boost/icl/detail/set_algo.hpp>
#include <boost/icl/detail/interval_map_algo.hpp>
#include <boost/icl/concept/interval.hpp>
#include <boost/icl/concept/joinable.hpp>
namespace boost{ namespace icl
{
template<class Type>
inline typename enable_if<is_interval_map<Type>, typename Type::segment_type>::type
make_segment(const typename Type::element_type& element)
{
typedef typename Type::interval_type interval_type;
typedef typename Type::segment_type segment_type;
return segment_type(icl::singleton<interval_type>(element.key), element.data);
}
//==============================================================================
//= Containedness<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- bool contains(c T&, c P&) T:{M} P:{b p M} fragment_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, bool>::type
contains(const Type& super, const typename Type::element_type& key_value_pair)
{
typedef typename Type::const_iterator const_iterator;
const_iterator it_ = icl::find(super, key_value_pair.key);
return it_ != super.end() && (*it_).second == key_value_pair.data;
}
template<class Type>
typename enable_if<is_interval_map<Type>, bool>::type
contains(const Type& super, const typename Type::segment_type& sub_segment)
{
typedef typename Type::interval_type interval_type;
typedef typename Type::const_iterator const_iterator;
interval_type sub_interval = sub_segment.first;
if(icl::is_empty(sub_interval))
return true;
std::pair<const_iterator, const_iterator> exterior = super.equal_range(sub_interval);
if(exterior.first == exterior.second)
return false;
const_iterator last_overlap = prior(exterior.second);
if(!(sub_segment.second == exterior.first->second) )
return false;
return
icl::contains(hull(exterior.first->first, last_overlap->first), sub_interval)
&& Interval_Map::is_joinable(super, exterior.first, last_overlap);
}
template<class Type, class CoType>
typename enable_if<is_concept_compatible<is_interval_map, Type, CoType>, bool>::type
contains(const Type& super, const CoType& sub)
{
return Interval_Set::within(sub, super);
}
//------------------------------------------------------------------------------
//- bool contains(c T&, c P&) T:{M} P:{e i S} key_types : total
//------------------------------------------------------------------------------
template<class Type, class CoType>
typename enable_if< mpl::and_< is_interval_map<Type>
, is_total<Type>
, is_cross_derivative<Type, CoType> >
, bool>::type
contains(const Type&, const CoType&)
{
return true;
}
//------------------------------------------------------------------------------
//- bool contains(c T&, c P&) T:{M} P:{e i S} key_types : partial
//------------------------------------------------------------------------------
template<class Type>
typename enable_if< mpl::and_< is_interval_map<Type>
, mpl::not_<is_total<Type> > >
, bool>::type
contains(const Type& super, const typename Type::domain_type& key)
{
return icl::find(super, key) != super.end();
}
template<class Type>
typename enable_if< mpl::and_< is_interval_map<Type>
, mpl::not_<is_total<Type> > >
, bool>::type
contains(const Type& super, const typename Type::interval_type& sub_interval)
{
typedef typename Type::const_iterator const_iterator;
if(icl::is_empty(sub_interval))
return true;
std::pair<const_iterator, const_iterator> exterior = super.equal_range(sub_interval);
if(exterior.first == exterior.second)
return false;
const_iterator last_overlap = prior(exterior.second);
return
icl::contains(hull(exterior.first->first, last_overlap->first), sub_interval)
&& Interval_Set::is_joinable(super, exterior.first, last_overlap);
}
template<class Type, class KeyT>
typename enable_if< mpl::and_< is_concept_combinable<is_interval_map, is_interval_set, Type, KeyT>
, mpl::not_<is_total<Type> > >
, bool>::type
contains(const Type& super, const KeyT& sub)
{
return Interval_Set::within(sub, super);
}
//==============================================================================
//= Addition<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- T& add(T&, c P&) T:{M} P:{b p} fragment_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
add(Type& object, const typename Type::segment_type& operand)
{
return object.add(operand);
}
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
add(Type& object, const typename Type::element_type& operand)
{
return icl::add(object, make_segment<Type>(operand));
}
//------------------------------------------------------------------------------
//- T& add(T&, J, c P&) T:{M} P:{p} segment_type
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, typename Type::iterator >::type
add(Type& object, typename Type::iterator prior_,
const typename Type::segment_type& operand)
{
return object.add(prior_, operand);
}
//==============================================================================
//= Insertion<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- T& insert(T&, c P&) T:{M} P:{b p} fragment_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
insert(Type& object, const typename Type::segment_type& operand)
{
return object.insert(operand);
}
template<class Type>
inline typename enable_if<is_interval_map<Type>, Type>::type&
insert(Type& object, const typename Type::element_type& operand)
{
return icl::insert(object, make_segment<Type>(operand));
}
//------------------------------------------------------------------------------
//- T& insert(T&, J, c P&) T:{M} P:{p} with hint
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, typename Type::iterator>::type
insert(Type& object, typename Type::iterator prior,
const typename Type::segment_type& operand)
{
return object.insert(prior, operand);
}
//==============================================================================
//= Erasure<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- T& erase(T&, c P&) T:{M} P:{e i} key_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
erase(Type& object, const typename Type::interval_type& operand)
{
return object.erase(operand);
}
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
erase(Type& object, const typename Type::domain_type& operand)
{
typedef typename Type::interval_type interval_type;
return icl::erase(object, icl::singleton<interval_type>(operand));
}
//------------------------------------------------------------------------------
//- T& erase(T&, c P&) T:{M} P:{b p} fragment_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
erase(Type& object, const typename Type::segment_type& operand)
{
return object.erase(operand);
}
template<class Type>
inline typename enable_if<is_interval_map<Type>, Type>::type&
erase(Type& object, const typename Type::element_type& operand)
{
return icl::erase(object, make_segment<Type>(operand));
}
//==============================================================================
//= Subtraction<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- T& subtract(T&, c P&) T:{M} P:{b p} fragment_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
subtract(Type& object, const typename Type::segment_type& operand)
{
return object.subtract(operand);
}
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
subtract(Type& object, const typename Type::element_type& operand)
{
return icl::subtract(object, make_segment<Type>(operand));
}
//------------------------------------------------------------------------------
//- T& subtract(T&, c P&) T:{M} P:{e i} key_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
subtract(Type& object, const typename Type::domain_type& operand)
{
return object.erase(operand);
}
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
subtract(Type& object, const typename Type::interval_type& operand)
{
return object.erase(operand);
}
//==============================================================================
//= Selective Update<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- T& set_at(T&, c P&) T:{M} P:{e i}
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
set_at(Type& object, const typename Type::segment_type& operand)
{
icl::erase(object, operand.first);
return icl::insert(object, operand);
}
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
set_at(Type& object, const typename Type::element_type& operand)
{
return icl::set_at(object, make_segment<Type>(operand));
}
//==============================================================================
//= Intersection<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- T& subtract(T&, c P&) T:{M} P:{b p} fragment_type
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, void>::type
add_intersection(Type& section, const Type& object,
const typename Type::element_type& operand)
{
typedef typename Type::segment_type segment_type;
object.add_intersection(section, make_segment<Type>(operand));
}
template<class Type>
typename enable_if<is_interval_map<Type>, void>::type
add_intersection(Type& section, const Type& object,
const typename Type::segment_type& operand)
{
object.add_intersection(section, operand);
}
//------------------------------------------------------------------------------
//- T& subtract(T&, c P&) T:{M} P:{M'} map fragment_type total
//------------------------------------------------------------------------------
template<class Type, class MapT>
typename enable_if
<
mpl::and_< is_total<Type>
, is_concept_compatible<is_interval_map, Type, MapT> >
, void
>::type
add_intersection(Type& section, const Type& object, const MapT& operand)
{
section += object;
section += operand;
}
//------------------------------------------------------------------------------
//- T& subtract(T&, c P&) T:{M} P:{M'} map fragment_type partial
//------------------------------------------------------------------------------
template<class Type, class MapT>
typename enable_if
<
mpl::and_< mpl::not_<is_total<Type> >
, is_concept_compatible<is_interval_map, Type, MapT> >
, void
>::type
add_intersection(Type& section, const Type& object, const MapT& operand)
{
typedef typename Type::segment_type segment_type;
typedef typename Type::interval_type interval_type;
typedef typename MapT::const_iterator const_iterator;
if(operand.empty())
return;
const_iterator common_lwb, common_upb;
if(!Set::common_range(common_lwb, common_upb, operand, object))
return;
const_iterator it_ = common_lwb;
while(it_ != common_upb)
add_intersection(section, object, *it_++);
}
//------------------------------------------------------------------------------
//- T& subtract(T&, c P&) T:{M} P:{e i S} key_type
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, void>::type
add_intersection(Type& section, const Type& object,
const typename Type::domain_type& key_value)
{
typedef typename Type::interval_type interval_type;
typedef typename Type::segment_type segment_type;
typedef typename Type::const_iterator const_iterator;
const_iterator it_ = icl::find(object, key_value);
if(it_ != object.end())
add(section, segment_type(interval_type(key_value),(*it_).second));
}
template<class Type>
typename enable_if<is_interval_map<Type>, void>::type
add_intersection(Type& section, const Type& object,
const typename Type::interval_type& inter_val)
{
typedef typename Type::interval_type interval_type;
typedef typename Type::value_type value_type;
typedef typename Type::const_iterator const_iterator;
typedef typename Type::iterator iterator;
if(icl::is_empty(inter_val))
return;
std::pair<const_iterator, const_iterator> exterior
= object.equal_range(inter_val);
if(exterior.first == exterior.second)
return;
iterator prior_ = section.end();
for(const_iterator it_=exterior.first; it_ != exterior.second; it_++)
{
interval_type common_interval = (*it_).first & inter_val;
if(!icl::is_empty(common_interval))
prior_ = add(section, prior_,
value_type(common_interval, (*it_).second) );
}
}
template<class Type, class KeySetT>
typename enable_if<is_concept_combinable<is_interval_map, is_interval_set, Type, KeySetT>, void>::type
add_intersection(Type& section, const Type& object, const KeySetT& key_set)
{
typedef typename KeySetT::const_iterator const_iterator;
if(icl::is_empty(key_set))
return;
const_iterator common_lwb, common_upb;
if(!Set::common_range(common_lwb, common_upb, key_set, object))
return;
const_iterator it_ = common_lwb;
while(it_ != common_upb)
add_intersection(section, object, *it_++);
}
//------------------------------------------------------------------------------
//- intersects<IntervalMaps> fragment_types
//------------------------------------------------------------------------------
template<class Type, class OperandT>
typename enable_if<mpl::and_< is_interval_map<Type>
, is_total<Type>
, boost::is_same< OperandT
, typename segment_type_of<Type>::type> >,
bool>::type
intersects(const Type&, const OperandT&)
{
return true;
}
template<class Type, class OperandT>
typename enable_if<mpl::and_< is_interval_map<Type>
, mpl::not_<is_total<Type> >
, boost::is_same<OperandT, typename segment_type_of<Type>::type> >,
bool>::type
intersects(const Type& object, const OperandT& operand)
{
Type intersection;
icl::add_intersection(intersection, object, operand);
return !icl::is_empty(intersection);
}
template<class Type, class OperandT>
typename enable_if<mpl::and_< is_interval_map<Type>
, boost::is_same<OperandT, typename element_type_of<Type>::type> >,
bool>::type
intersects(const Type& object, const OperandT& operand)
{
return icl::intersects(object, make_segment<Type>(operand));
}
//==============================================================================
//= Symmetric difference<IntervalMap>
//==============================================================================
//------------------------------------------------------------------------------
//- T& flip(T&, c P&) T:{M} P:{b p} fragment_types
//------------------------------------------------------------------------------
template<class Type>
typename enable_if<is_interval_map<Type>, Type>::type&
flip(Type& object, const typename Type::segment_type& operand)
{
return object.flip(operand);
}
template<class Type>
inline typename enable_if<is_interval_map<Type>, Type>::type&
flip(Type& object, const typename Type::element_type& operand)
{
return icl::flip(object, make_segment<Type>(operand));
}
//------------------------------------------------------------------------------
//- T& flip(T&, c P&) T:{M} P:{M'} total absorber
//------------------------------------------------------------------------------
template<class Type, class OperandT>
typename enable_if< mpl::and_< is_total<Type>
, absorbs_identities<Type>
, is_concept_compatible<is_interval_map,
Type, OperandT >
>
, Type>::type&
flip(Type& object, const OperandT&)
{
object.clear();
return object;
}
//------------------------------------------------------------------------------
//- T& flip(T&, c P&) T:{M} P:{M'} total enricher
//------------------------------------------------------------------------------
#ifdef BOOST_MSVC
#pragma warning(push)
#pragma warning(disable:4127) // conditional expression is constant
#endif
template<class Type, class OperandT>
typename enable_if< mpl::and_< is_total<Type>
, mpl::not_<absorbs_identities<Type> >
, is_concept_compatible<is_interval_map,
Type, OperandT >
>
, Type>::type&
flip(Type& object, const OperandT& operand)
{
typedef typename Type::codomain_type codomain_type;
object += operand;
ICL_FORALL(typename Type, it_, object)
(*it_).second = identity_element<codomain_type>::value();
if(mpl::not_<is_interval_splitter<Type> >::value)
icl::join(object);
return object;
}
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
//------------------------------------------------------------------------------
//- T& flip(T&, c P&) T:{M} P:{M'} partial
//------------------------------------------------------------------------------
template<class Type, class OperandT>
typename enable_if< mpl::and_< mpl::not_<is_total<Type> >
, is_concept_compatible<is_interval_map,
Type, OperandT >
>
, Type>::type&
flip(Type& object, const OperandT& operand)
{
typedef typename OperandT::const_iterator const_iterator;
typedef typename Type::codomain_type codomain_type;
const_iterator common_lwb, common_upb;
if(!Set::common_range(common_lwb, common_upb, operand, object))
return object += operand;
const_iterator it_ = operand.begin();
// All elements of operand left of the common range are added
while(it_ != common_lwb)
icl::add(object, *it_++);
// All elements of operand in the common range are symmetrically subtracted
while(it_ != common_upb)
icl::flip(object, *it_++);
// All elements of operand right of the common range are added
while(it_ != operand.end())
icl::add(object, *it_++);
return object;
}
//==============================================================================
//= Set selection
//==============================================================================
template<class Type, class SetT>
typename enable_if<is_concept_combinable<is_interval_set, is_interval_map,
SetT, Type>, SetT>::type&
domain(SetT& result, const Type& object)
{
typedef typename SetT::iterator set_iterator;
result.clear();
set_iterator prior_ = result.end();
ICL_const_FORALL(typename Type, it_, object)
prior_ = icl::insert(result, prior_, (*it_).first);
return result;
}
template<class Type, class SetT>
typename enable_if<is_concept_combinable<is_interval_set, is_interval_map,
SetT, Type>, SetT>::type&
between(SetT& in_between, const Type& object)
{
typedef typename Type::const_iterator const_iterator;
typedef typename SetT::iterator set_iterator;
in_between.clear();
const_iterator it_ = object.begin(), pred_;
set_iterator prior_ = in_between.end();
if(it_ != object.end())
pred_ = it_++;
while(it_ != object.end())
prior_ = icl::insert(in_between, prior_,
between((*pred_++).first, (*it_++).first));
return in_between;
}
//==============================================================================
//= Manipulation by predicates
//==============================================================================
template<class MapT, class Predicate>
typename enable_if<is_interval_map<MapT>, MapT>::type&
erase_if(const Predicate& pred, MapT& object)
{
typename MapT::iterator it_ = object.begin();
while(it_ != object.end())
if(pred(*it_))
object.erase(it_++);
else ++it_;
return object;
}
template<class MapT, class Predicate>
inline typename enable_if<is_interval_map<MapT>, MapT>::type&
add_if(const Predicate& pred, MapT& object, const MapT& src)
{
typename MapT::const_iterator it_ = src.begin();
while(it_ != src.end())
if(pred(*it_))
icl::add(object, *it_++);
return object;
}
template<class MapT, class Predicate>
inline typename enable_if<is_interval_map<MapT>, MapT>::type&
assign_if(const Predicate& pred, MapT& object, const MapT& src)
{
icl::clear(object);
return add_if(object, src, pred);
}
//==============================================================================
//= Morphisms
//==============================================================================
template<class Type>
typename enable_if<mpl::and_< is_interval_map<Type>
, absorbs_identities<Type> >, Type>::type&
absorb_identities(Type& object)
{
return object;
}
template<class Type>
typename enable_if<mpl::and_< is_interval_map<Type>
, mpl::not_<absorbs_identities<Type> > >, Type>::type&
absorb_identities(Type& object)
{
typedef typename Type::segment_type segment_type;
return icl::erase_if(content_is_identity_element<segment_type>(), object);
}
//==============================================================================
//= Streaming
//==============================================================================
template<class CharType, class CharTraits, class Type>
typename enable_if<is_interval_map<Type>,
std::basic_ostream<CharType, CharTraits> >::type&
operator << (std::basic_ostream<CharType, CharTraits>& stream, const Type& object)
{
stream << "{";
ICL_const_FORALL(typename Type, it_, object)
stream << "(" << (*it_).first << "->" << (*it_).second << ")";
return stream << "}";
}
}} // namespace boost icl
#endif
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