Keyed.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
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-------------------------------------------------------------------------------
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::Keyed
 
Description
    A container with an integer key attached to any item.
 
    The key can useful for sorting.
 
SourceFiles
    KeyedI.H
 
\*---------------------------------------------------------------------------*/
 
#ifndef Keyed_H
#define Keyed_H
 
#include "List.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration of friend functions and operators
 
template<class T> class Keyed;
 
template<class T> Istream& operator>>(Istream&, Keyed<T>&);
template<class T> Ostream& operator<<(Ostream&, const Keyed<T>&);
 
/*---------------------------------------------------------------------------*\
                       Class Keyed Declaration
\*---------------------------------------------------------------------------*/
 
template<class T>
class Keyed
:
    public T
{
    // Private data
 
        label key_;
 
public:
 
    // Static Members
 
        //- Add labels to a list of values
        inline static List<Keyed<T> > createList
        (
            const List<T>&,
            const label key=0
        );
 
        //- Add labels to a list of values
        inline static List<Keyed<T> > createList
        (
            const List<T>&,
            const labelUList& keys
        );
 
 
    // Constructors
 
        //- Construct null
        inline Keyed();
 
        //- Construct as a copy of item, with a key
        inline Keyed(const T& item, const label key=0);
 
        //- Construct by transferring the item, with a key
        inline Keyed(const Xfer<T>& item, const label key=0);
 
        //- Construct from Istream
        inline Keyed(Istream&);
 
 
    // Member Functions
 
        // Access
 
            //- Return const access to the integer key
            inline label key() const;
 
            //- Return non-const access to the integer key
            inline label& key();
 
 
    // IOstream Operators
 
        friend Istream& operator>> <T>(Istream&, Keyed<T>&);
        friend Ostream& operator<< <T>(Ostream&, const Keyed<T>&);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "KeyedI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //