SortableList.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::SortableList
 
Description
    A list that is sorted upon construction or when explicitly requested
    with the sort() method.
 
    Uses the Foam::stableSort() algorithm.
 
SourceFiles
    SortableList.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef SortableList_H
#define SortableList_H
 
#include "labelList.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                        Class SortableList Declaration
\*---------------------------------------------------------------------------*/
 
template<class T>
class SortableList
:
    public List<T>
{
    // Private data
 
        //- Original indices
        labelList indices_;
 
 
public:
 
    // Constructors
 
        //- Null constructor, sort later (eg, after assignment or transfer)
        SortableList();
 
        //- Construct from UList, sorting immediately.
        explicit SortableList(const UList<T>&);
 
        //- Construct from transferred List, sorting immediately.
        explicit SortableList(const Xfer<List<T> >&);
 
        //- Construct given size. Sort later on.
        //  The indices remain empty until the list is sorted
        explicit SortableList(const label size);
 
        //- Construct given size and initial value. Sort later on.
        //  The indices remain empty until the list is sorted
        SortableList(const label size, const T&);
 
        //- Construct as copy.
        SortableList(const SortableList<T>&);
 
 
    // Member Functions
 
        //- Return the list of sorted indices. Updated every sort.
        const labelList& indices() const
        {
            return indices_;
        }
 
        //- Return non-const access to the sorted indices. Updated every sort.
        labelList& indices()
        {
            return indices_;
        }
 
        //- Clear the list and the indices
        void clear();
 
        //- Clear the indices and return a reference to the underlying List
        List<T>& shrink();
 
        //- (stable) sort the list (if changed after construction time)
        //  also resizes the indices as required
        void sort();
 
        //- Reverse (stable) sort the list
        void reverseSort();
 
        //- Transfer contents to the Xfer container as a plain List
        inline Xfer<List<T> > xfer();
 
 
    // Member Operators
 
        //- Assignment of all entries to the given value
        inline void operator=(const T&);
 
        //- Assignment from UList operator. Takes linear time.
        inline void operator=(const UList<T>&);
 
        //- Assignment operator. Takes linear time.
        inline void operator=(const SortableList<T>&);
 
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#   include "SortableList.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //