boost/icl/concept/interval_associator_base.hpp
/*-----------------------------------------------------------------------------+
Copyright (c) 2011-2011: 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_ASSOCIATOR_BASE_HPP_JOFA_110301
#define BOOST_ICL_CONCEPT_INTERVAL_ASSOCIATOR_BASE_HPP_JOFA_110301
#include <boost/icl/type_traits/domain_type_of.hpp>
#include <boost/icl/type_traits/interval_type_of.hpp>
#include <boost/icl/type_traits/is_combinable.hpp>
#include <boost/icl/concept/set_value.hpp>
#include <boost/icl/concept/map_value.hpp>
#include <boost/icl/concept/interval.hpp>
namespace boost{ namespace icl
{
//==============================================================================
//= Selection<IntervalSet|IntervalMap>
//==============================================================================
template<class Type> inline
typename enable_if<mpl::and_< is_interval_container<Type>
, is_discrete<typename domain_type_of<Type>::type>
>
, typename Type::const_iterator>::type
find(const Type& object, const typename domain_type_of<Type>::type& key_val)
{
typedef typename Type::const_iterator const_iterator;
typedef typename Type::interval_type interval_type;
return object.find(icl::detail::unit_trail<interval_type>(key_val));
}
template<class Type> inline
typename enable_if<mpl::and_< is_interval_container<Type>
, is_continuous<typename domain_type_of<Type>::type>
, has_dynamic_bounds<typename interval_type_of<Type>::type>
>
, typename Type::const_iterator>::type
find(const Type& object, const typename domain_type_of<Type>::type& key_val)
{
typedef typename Type::const_iterator const_iterator;
typedef typename Type::interval_type interval_type;
return object.find(icl::singleton<interval_type>(key_val));
}
template<class Type> inline
typename enable_if<mpl::and_< is_interval_container<Type>
, is_continuous<typename domain_type_of<Type>::type>
, is_static_right_open<typename interval_type_of<Type>::type>
, boost::detail::is_incrementable<typename domain_type_of<Type>::type>
>
, typename Type::const_iterator>::type
find(const Type& object, const typename domain_type_of<Type>::type& key_val)
{
typedef typename Type::const_iterator const_iterator;
typedef typename Type::interval_type interval_type;
const_iterator first_collision = object.lower_bound(icl::detail::unit_trail<interval_type>(key_val));
// A part of the unit_trail(key_value)-interval may be found in the container, that
// does not contain key_value. Therefore we have to check for its existence:
return ( first_collision == object.end()
|| icl::contains(key_value<Type>(first_collision), key_val) )
? first_collision
: object.end();
}
template<class Type> inline
typename enable_if<mpl::and_< is_interval_container<Type>
, is_continuous<typename domain_type_of<Type>::type>
, is_static_left_open<typename interval_type_of<Type>::type>
, boost::detail::is_incrementable<typename domain_type_of<Type>::type>
>
, typename Type::const_iterator>::type
find(const Type& object, const typename domain_type_of<Type>::type& key_val)
{
typedef typename Type::const_iterator const_iterator;
typedef typename Type::interval_type interval_type;
const_iterator last_collision = object.upper_bound(icl::detail::unit_trail<interval_type>(key_val));
if(last_collision != object.begin())
--last_collision;
// A part of the unit_trail(key_value)-interval may be found in the container, that
// does not contain key_value. Therefore we have to check for its existence:
return ( last_collision == object.end()
|| icl::contains(key_value<Type>(last_collision), key_val) )
? last_collision
: object.end();
}
// NOTE: find(object, key) won't compile if key is of continuous type that does
// not implement in(de)crementation (e.g. std::string).
template<class Type> inline
typename enable_if< is_interval_container<Type>
, typename Type::const_iterator>::type
find(const Type& object, const typename interval_type_of<Type>::type& inter_val)
{
return object.find(inter_val);
}
//==============================================================================
//= Morphisms
//==============================================================================
template<class Type>
typename enable_if<is_interval_container<Type>, Type>::type&
join(Type& object)
{
typedef typename Type::interval_type interval_type;
typedef typename Type::iterator iterator;
iterator it_ = object.begin();
if(it_ == object.end())
return object;
iterator next_ = it_; next_++;
while(next_ != object.end())
{
if( segmental::is_joinable<Type>(it_, next_) )
{
iterator fst_mem = it_; // hold the first member
// Go on while touching members are found
it_++; next_++;
while( next_ != object.end()
&& segmental::is_joinable<Type>(it_, next_) )
{ it_++; next_++; }
// finally we arrive at the end of a sequence of joinable intervals
// and it points to the last member of that sequence
const_cast<interval_type&>(key_value<Type>(it_))
= hull(key_value<Type>(it_), key_value<Type>(fst_mem));
object.erase(fst_mem, it_);
it_++; next_=it_;
if(next_!=object.end())
next_++;
}
else { it_++; next_++; }
}
return object;
}
}} // namespace boost icl
#endif
