427 lines
12 KiB
C++
427 lines
12 KiB
C++
// Copyright (c) 2010-2011 CNRS and LIRIS' Establishments (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org)
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Combinatorial_map/include/CGAL/Cell_attribute.h $
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// $Id: Cell_attribute.h d1a323c 2020-03-26T19:24:14+01:00 Sébastien Loriot
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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// Author(s) : Guillaume Damiand <guillaume.damiand@liris.cnrs.fr>
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//
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#ifndef CGAL_CELL_ATTRIBUTE_H
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#define CGAL_CELL_ATTRIBUTE_H 1
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#include <CGAL/tags.h>
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#include <CGAL/assertions.h>
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namespace CGAL {
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template <class, class, class, class>
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class Compact_container;
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template <class, class>
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class Concurrent_compact_container;
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template<unsigned int, class, class>
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class Combinatorial_map_storage_1;
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template<unsigned int, class, class>
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class Generalized_map_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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class CMap_linear_cell_complex_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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class GMap_linear_cell_complex_storage_1;
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namespace internal {
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template<class, class>
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struct Init_id;
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} // end namespace internal
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/** @file Cell_attribute.h
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* Definition of cell attribute, with or without info.
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*/
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/// Info associated with a cell_attribute.
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template <typename Info>
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class Info_for_cell_attribute
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{
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public:
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/// Contructor without parameter.
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Info_for_cell_attribute()
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{}
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/// Contructor with an info in parameter.
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Info_for_cell_attribute(const Info& ainfo) : minfo(ainfo)
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{}
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/// Get the info associated with the cell_attribute.
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Info& info()
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{ return minfo; }
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/// Get the info associated with the cell_attribute.
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const Info& info() const
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{ return minfo; }
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protected:
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/// The info associated with the cell_attribute.
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Info minfo;
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};
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/// Id associated with a cell attribute
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template <class WithId>
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class Add_id
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{
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public:
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// Required to have "internal" property maps.
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std::size_t& id()
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{ return m_id; }
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const std::size_t& id() const
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{ return m_id; }
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protected:
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void set_id(std::size_t id)
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{ m_id=id; }
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protected:
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/// id of the cell
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std::size_t m_id;
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};
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/// If the tag WithId is false, we do not add id to cells.
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template <>
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class Add_id<Tag_false>
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{};
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/// Cell_attribute_without_info
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template <class Refs, class Tag=Tag_true, class OnMerge=Null_functor,
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class OnSplit=Null_functor, class WithID=Tag_false>
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class Cell_attribute_without_info;
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// Cell_attribute_without_info without dart support.
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template <class Refs, class OnMerge, class OnSplit, class WithID>
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class Cell_attribute_without_info<Refs, Tag_false,
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OnMerge, OnSplit, WithID>:
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public Add_id<WithID>
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{
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template<unsigned int, class, class>
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friend class Combinatorial_map_storage_1;
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template<unsigned int, class, class>
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friend class Generalized_map_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class CMap_linear_cell_complex_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class GMap_linear_cell_complex_storage_1;
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template <class, class, class, class>
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friend class Compact_container;
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template <class, class>
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friend class Concurrent_compact_container;
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template<class, class>
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friend struct internal::Init_id;
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public:
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typedef Tag_false Supports_cell_dart;
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typedef typename Refs::Dart_handle Dart_handle;
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typedef typename Refs::Dart_const_handle Dart_const_handle;
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typedef typename Refs::Alloc Alloc;
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typedef OnMerge On_merge;
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typedef OnSplit On_split;
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typedef WithID Has_id;
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/// operator =
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Cell_attribute_without_info&
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operator=(const Cell_attribute_without_info& acell)
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{
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mrefcounting = acell.mrefcounting;
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return *this;
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}
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/// Get the dart associated with the cell.
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Dart_handle dart() { return Refs::null_handle; }
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/// Get the dart associated with the cell.
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Dart_const_handle dart() const { return Refs::null_handle; }
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/// Set the dart associated with the cell.
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void set_dart(Dart_handle) {}
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/// Test if the cell is valid.
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/// For cell without dart, return always true.
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bool is_valid() const
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{ return true; }
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bool operator==(const Cell_attribute_without_info&) const
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{ return true; }
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bool operator!=(const Cell_attribute_without_info& other) const
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{ return !operator==(other); }
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protected:
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/// Contructor without parameter.
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Cell_attribute_without_info(): mrefcounting(0)
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{}
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/// Copy contructor.
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Cell_attribute_without_info(const Cell_attribute_without_info& acell):
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mrefcounting(acell.mrefcounting)
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{}
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protected:
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/// Increment the reference counting.
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void inc_nb_refs()
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{ mrefcounting+=4; } // 4 because the two lowest bits are reserved for cc
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/// Decrement the reference counting.
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void dec_nb_refs()
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{
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CGAL_assertion( mrefcounting>=4 );
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mrefcounting-=4; // 4 because the two lowest bits are reserved for cc
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}
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public:
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/// Get the reference counting.
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std::size_t get_nb_refs() const
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{ return (mrefcounting>>2); } // >>2 to ignore the 2 least significant bits
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void * for_compact_container() const
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{ return vp; }
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void for_compact_container(void *p)
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{ vp = p; }
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private:
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/// Reference counting: the number of darts linked to this cell.
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union
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{
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std::size_t mrefcounting;
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void *vp;
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};
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};
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/** Definition of cell attribute.
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* Cell_attribute defines what is a a cell. This is an object allowing to
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* link to a dart of the cell (when T is true).
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* The refs class must provide the type of Combinatorial_map used.
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*/
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template <class Refs, class OnMerge, class OnSplit, class WithID>
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class Cell_attribute_without_info<Refs, Tag_true,
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OnMerge, OnSplit, WithID>: public Add_id<WithID>
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{
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template<unsigned int, class, class>
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friend class Combinatorial_map_storage_1;
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template<unsigned int, class, class>
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friend class Generalized_map_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class CMap_linear_cell_complex_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class GMap_linear_cell_complex_storage_1;
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template <class, class, class, class>
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friend class Compact_container;
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template <class, class>
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friend class Concurrent_compact_container;
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template<class, class>
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friend struct internal::Init_id;
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public:
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typedef Tag_true Supports_cell_dart;
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typedef typename Refs::Dart_handle Dart_handle;
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typedef typename Refs::Dart_const_handle Dart_const_handle;
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typedef typename Refs::Alloc Alloc;
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typedef OnMerge On_merge;
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typedef OnSplit On_split;
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typedef WithID Has_id;
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/// operator =
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Cell_attribute_without_info&
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operator=(const Cell_attribute_without_info& acell)
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{
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mdart = acell.mdart;
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mrefcounting = acell.mrefcounting;
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return *this;
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}
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/// Get the dart associated with the cell.
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Dart_handle dart() { return mdart; }
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/// Get the dart associated with the cell.
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Dart_const_handle dart() const { return mdart; }
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/// Set the dart associated with the cell.
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void set_dart(Dart_handle adart) { mdart = adart; }
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/// Test if the cell is valid.
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/// A cell is valid if its dart is not nullptr.
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bool is_valid() const
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{ return mdart!=Refs::null_handle; }
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bool operator==(const Cell_attribute_without_info&) const
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{ return true; }
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bool operator!=(const Cell_attribute_without_info& other) const
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{ return !operator==(other); }
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protected:
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/// Contructor without parameter.
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Cell_attribute_without_info() : mdart(Refs::null_handle),
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mrefcounting(0)
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{}
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/// Copy contructor.
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Cell_attribute_without_info(const Cell_attribute_without_info& acell):
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mdart(acell.mdart),
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mrefcounting(acell.mrefcounting)
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{}
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protected:
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/// Increment the reference counting.
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void inc_nb_refs()
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{ ++mrefcounting; }
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/// Decrement the reference counting.
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void dec_nb_refs()
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{
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CGAL_assertion( mrefcounting>0 );
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--mrefcounting;
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}
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public:
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/// Get the reference counting.
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std::size_t get_nb_refs() const
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{ return mrefcounting; }
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void * for_compact_container() const
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{ return mdart.for_compact_container(); }
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void for_compact_container(void *p)
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{ mdart.for_compact_container(p); }
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private:
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/// The dart handle associated with the cell.
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Dart_handle mdart;
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/// Reference counting: the number of darts linked to this cell.
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std::size_t mrefcounting;
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};
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/// Cell associated with an attribute, with or without info depending
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/// if Info==void.
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template <class Refs, class Info_=void, class Tag_=Tag_true,
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class OnMerge=Null_functor,
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class OnSplit=Null_functor,
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class WithID=Tag_false>
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class Cell_attribute;
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/// Specialization when Info==void.
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template <class Refs, class Tag_, class OnMerge, class OnSplit, class WithID>
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class Cell_attribute<Refs, void, Tag_, OnMerge, OnSplit, WithID> :
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public Cell_attribute_without_info<Refs, Tag_, OnMerge, OnSplit, WithID>
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{
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template<unsigned int, class, class>
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friend class Combinatorial_map_storage_1;
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template<unsigned int, class, class>
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friend class Generalized_map_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class CMap_linear_cell_complex_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class GMap_linear_cell_complex_storage_1;
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template <class, class, class, class>
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friend class Compact_container;
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template <class, class>
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friend class Concurrent_compact_container;
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public:
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typedef Tag_ Supports_cell_dart;
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typedef typename Refs::Dart_handle Dart_handle;
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typedef typename Refs::Dart_const_handle Dart_const_handle;
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typedef typename Refs::Alloc Alloc;
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typedef OnMerge On_merge;
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typedef OnSplit On_split;
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typedef void Info;
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protected:
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/// Default contructor.
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Cell_attribute()
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{}
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};
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/// Specialization when Info!=void.
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template <class Refs, class Info_, class Tag_,
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class OnMerge, class OnSplit, class WithID>
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class Cell_attribute :
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public Cell_attribute_without_info<Refs, Tag_, OnMerge, OnSplit, WithID>,
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public Info_for_cell_attribute<Info_>
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{
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template<unsigned int, class, class>
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friend class Combinatorial_map_storage_1;
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template<unsigned int, class, class>
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friend class Generalized_map_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class CMap_linear_cell_complex_storage_1;
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template<unsigned int, unsigned int, class, class, class>
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friend class GMap_linear_cell_complex_storage_1;
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template <class, class, class, class>
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friend class Compact_container;
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template <class, class>
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friend class Concurrent_compact_container;
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public:
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typedef Cell_attribute<Refs, Info_, Tag_, OnMerge, OnSplit, WithID> Self;
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typedef Tag_ Supports_cell_dart;
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typedef typename Refs::Dart_handle Dart_handle;
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typedef typename Refs::Dart_const_handle Dart_const_handle;
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typedef typename Refs::Alloc Alloc;
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typedef OnMerge On_merge;
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typedef OnSplit On_split;
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typedef Info_ Info;
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bool operator==(const Self& other) const
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{ return this->info()==other.info(); }
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bool operator!=(const Self& other) const
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{ return !operator==(other); }
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protected:
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/// Default contructor.
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Cell_attribute()
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{}
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/// Contructor with an info in parameter.
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Cell_attribute(const Info_& ainfo) :
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Info_for_cell_attribute<Info_>(ainfo)
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{}
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};
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} // namespace CGAL
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#endif // CGAL_CELL_ATTRIBUTE_H //
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// EOF //
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