/usr/include/CGAL/Cell_attribute.h is in libcgal-dev 4.7-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 3 of the License,
// or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
//
// Author(s) : Guillaume Damiand <guillaume.damiand@liris.cnrs.fr>
//
#ifndef CGAL_CELL_ATTRIBUTE_H
#define CGAL_CELL_ATTRIBUTE_H 1
#include <CGAL/Compact_container.h>
namespace CGAL {
template < unsigned int, class, class, class, class >
class Combinatorial_map_base;
/** @file Cell_attribute.h
* Definition of cell attribute, with or without info.
*/
/// Info associated with a cell_attribute.
template <typename Info>
class Info_for_cell_attribute
{
public:
/// Contructor without parameter.
Info_for_cell_attribute()
{}
/// Contructor with an info in parameter.
Info_for_cell_attribute(const Info& ainfo) : minfo(ainfo)
{}
/// Get the info associated with the cell_attribute.
Info& info()
{ return minfo; }
/// Get the info associated with the cell_attribute.
const Info& info() const
{ return minfo; }
protected:
/// The info associated with the cell_attribute.
Info minfo;
};
/// Cell_attribute_without_info
template <class Refs, class Tag=Tag_true, class OnMerge=Null_functor,
class OnSplit=Null_functor>
class Cell_attribute_without_info;
// Cell_attribute_without_info without dart support.
template <class Refs, class OnMerge, class OnSplit>
class Cell_attribute_without_info<Refs, Tag_false,
OnMerge, OnSplit>
{
template < unsigned int, class, class, class, class >
friend class Combinatorial_map_base;
template < unsigned int, class, class, class, class >
friend class Generalized_map_base;
template <unsigned int, typename>
friend struct Dart;
template <unsigned int, typename>
friend struct GMap_dart;
template <class, class, class, class>
friend class Compact_container;
template<typename, unsigned int, typename>
friend struct internal::Decrease_attribute_functor_run;
template <typename, typename>
friend struct internal::Reverse_orientation_of_map_functor;
template <typename, typename>
friend struct internal::Reverse_orientation_of_connected_component_functor;
public:
typedef Tag_false Supports_cell_dart;
typedef typename Refs::Dart_handle Dart_handle;
typedef typename Refs::Dart_const_handle Dart_const_handle;
typedef typename Refs::Alloc Alloc;
typedef OnMerge On_merge;
typedef OnSplit On_split;
/// operator =
Cell_attribute_without_info&
operator=(const Cell_attribute_without_info& acell)
{
mrefcounting = acell.mrefcounting;
return *this;
}
/// Get the dart associated with the cell.
Dart_handle dart() { return Refs::null_handle; }
/// Get the dart associated with the cell.
Dart_const_handle dart() const { return Refs::null_handle; }
/// Set the dart associated with the cell.
void set_dart(Dart_handle) {}
/// Test if the cell is valid.
/// For cell without dart, return always true.
bool is_valid() const
{ return true; }
bool operator==(const Cell_attribute_without_info&) const
{ return true; }
bool operator!=(const Cell_attribute_without_info& other) const
{ return !operator==(other); }
// protected:
/// Contructor without parameter.
Cell_attribute_without_info(): mrefcounting(0)
{}
/// Copy contructor.
Cell_attribute_without_info(const Cell_attribute_without_info& acell):
mrefcounting(acell.mrefcounting)
{}
protected:
/// Increment the reference counting.
void inc_nb_refs()
{ mrefcounting+=4; } // 4 because the two lowest bits are reserved for cc
/// Decrement the reference counting.
void dec_nb_refs()
{
CGAL_assertion( mrefcounting>=4 );
mrefcounting-=4; // 4 because the two lowest bits are reserved for cc
}
public:
/// Get the reference counting.
std::size_t get_nb_refs() const
{ return (mrefcounting>>2); } // >>2 to ignore the 2 least significant bits
void * for_compact_container() const
{ return vp; }
void * & for_compact_container()
{ return vp; }
private:
/// Reference counting: the number of darts linked to this cell.
union
{
std::size_t mrefcounting;
void *vp;
};
};
/** Definition of cell attribute.
* Cell_attribute defines what is a a cell. This is an object allowing to
* link to a dart of the cell (when T is true).
* The refs class must provide the type of Combinatorial_map used.
*/
template <class Refs, class OnMerge, class OnSplit>
class Cell_attribute_without_info<Refs, Tag_true,
OnMerge, OnSplit>
{
template < unsigned int, class, class, class, class >
friend class Combinatorial_map_base;
template < unsigned int, class, class, class, class >
friend class Generalized_map_base;
template <unsigned int, typename>
friend struct Dart;
template <unsigned int, typename>
friend struct GMap_dart;
template <class, class, class, class>
friend class Compact_container;
template<typename, unsigned int, typename>
friend struct internal::Decrease_attribute_functor_run;
template <typename, typename>
friend struct internal::Reverse_orientation_of_map_functor;
template <typename, typename>
friend struct internal::Reverse_orientation_of_connected_component_functor;
public:
typedef Tag_true Supports_cell_dart;
typedef typename Refs::Dart_handle Dart_handle;
typedef typename Refs::Dart_const_handle Dart_const_handle;
typedef typename Refs::Alloc Alloc;
typedef OnMerge On_merge;
typedef OnSplit On_split;
/// operator =
Cell_attribute_without_info&
operator=(const Cell_attribute_without_info& acell)
{
mdart = acell.mdart;
mrefcounting = acell.mrefcounting;
return *this;
}
/// Get the dart associated with the cell.
Dart_handle dart() { return mdart; }
/// Get the dart associated with the cell.
Dart_const_handle dart() const { return mdart; }
/// Set the dart associated with the cell.
void set_dart(Dart_handle adart) { mdart = adart; }
/// Test if the cell is valid.
/// A cell is valid if its dart is not NULL.
bool is_valid() const
{ return mdart!=Refs::null_handle; }
bool operator==(const Cell_attribute_without_info&) const
{ return true; }
bool operator!=(const Cell_attribute_without_info& other) const
{ return !operator==(other); }
// protected:
/// Contructor without parameter.
Cell_attribute_without_info() : mdart(Refs::null_handle),
mrefcounting(0)
{}
/// Copy contructor.
Cell_attribute_without_info(const Cell_attribute_without_info& acell):
mdart(acell.mdart),
mrefcounting(acell.mrefcounting)
{}
protected:
/// Increment the reference counting.
void inc_nb_refs()
{ ++mrefcounting; }
/// Decrement the reference counting.
void dec_nb_refs()
{
CGAL_assertion( mrefcounting>0 );
--mrefcounting;
}
public:
/// Get the reference counting.
std::size_t get_nb_refs() const
{ return mrefcounting; }
void * for_compact_container() const
{ return mdart.for_compact_container(); }
void * & for_compact_container()
{ return mdart.for_compact_container(); }
private:
/// The dart handle associated with the cell.
Dart_handle mdart;
/// Reference counting: the number of darts linked to this cell.
std::size_t mrefcounting;
};
/// Cell associated with an attribute, with or without info depending
/// if Info==void.
template <class Refs, class Info_=void, class Tag_=Tag_true,
class OnMerge=Null_functor,
class OnSplit=Null_functor>
class Cell_attribute;
/// Specialization when Info==void.
template <class Refs, class Tag_,
class OnMerge, class OnSplit>
class Cell_attribute<Refs, void, Tag_, OnSplit, OnMerge> :
public Cell_attribute_without_info<Refs, Tag_, OnSplit, OnMerge>
{
template < unsigned int, class, class, class, class >
friend class Combinatorial_map_base;
template < unsigned int, class, class, class, class >
friend class Generalized_map_base;
template <class, class, class, class>
friend class Compact_container;
public:
typedef Tag_ Supports_cell_dart;
typedef typename Refs::Dart_handle Dart_handle;
typedef typename Refs::Dart_const_handle Dart_const_handle;
typedef typename Refs::Alloc Alloc;
typedef OnMerge On_merge;
typedef OnSplit On_split;
typedef void Info;
// protected:
/// Default contructor.
Cell_attribute()
{}
};
/// Specialization when Info!=void.
template <class Refs, class Info_, class Tag_,
class OnMerge, class OnSplit>
class Cell_attribute :
public Cell_attribute_without_info<Refs, Tag_, OnMerge, OnSplit>,
public Info_for_cell_attribute<Info_>
{
template < unsigned int, class, class, class, class >
friend class Combinatorial_map_base;
template < unsigned int, class, class, class, class >
friend class Generalized_map_base;
template <class, class, class, class>
friend class Compact_container;
public:
typedef Cell_attribute<Refs, Info_, Tag_, OnMerge, OnSplit> Self;
typedef Tag_ Supports_cell_dart;
typedef typename Refs::Dart_handle Dart_handle;
typedef typename Refs::Dart_const_handle Dart_const_handle;
typedef typename Refs::Alloc Alloc;
typedef OnMerge On_merge;
typedef OnSplit On_split;
typedef Info_ Info;
bool operator==(const Self& other) const
{ return this->info()==other.info(); }
bool operator!=(const Self& other) const
{ return !operator==(other); }
// protected:
/// Default contructor.
Cell_attribute()
{}
/// Contructor with an info in parameter.
Cell_attribute(const Info_& ainfo) :
Info_for_cell_attribute<Info_>(ainfo)
{}
};
} // namespace CGAL
#endif // CGAL_CELL_ATTRIBUTE_H //
// EOF //
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