/*---------------------------------------------------------------------------*\
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    \\  /    A nd           | Copyright (C) 2025-2026 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::zoneSet

Description
    Zone container returned by zoneGenerator::generate

    Optionally contains any combination of point, cell or face zones generated
    by the zoneGenerator::generate function which may simply be the zones
    returned by a lookup from the lists of zones stored on the mesh or generated
    by the particular \c zoneGenerator from a geometric search for example.

    Having \c zoneSet optionally hold zones of more than one type is
    particularly useful for the generation of complex coupled or related zone
    systems, for example rotating regions requiring both the \c cellZone of the
    rotating cells and the faces of the outer moving/sliding boundary.

SourceFiles
    zoneSetI.H
    zoneSet.C

See also
    Foam::zoneGenerator

\*---------------------------------------------------------------------------*/

#ifndef zoneSet_H
#define zoneSet_H

#include "NamedEnum.H"
#include "tmpNrc.H"
#include "pointZone.H"
#include "cellZone.H"
#include "faceZone.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

//- Enumeration defining the zone types
enum class zoneTypes
{
    point,
    cell,
    face
};

//- Named enumeration defining the zone type names
extern const NamedEnum<zoneTypes, 3> zoneTypesNames;

//- Enumeration defining the zone types with an option for all the types
enum class zoneTypesAll
{
    point,
    cell,
    face,
    all
};

//- Named enumeration defining the zone type names
//  with an option for all the types
extern const NamedEnum<zoneTypesAll, 4> zoneTypesAllNames;


/*---------------------------------------------------------------------------*\
                          Class zoneSet Declaration
\*---------------------------------------------------------------------------*/

class zoneSet
{
    // Private Data

        //- Temporary pointZone
        tmpNrc<pointZone> pZone_;

        //- Temporary cellZone
        tmpNrc<cellZone> cZone_;

        //- Temporary faceZone
        tmpNrc<faceZone> fZone_;


    // Private Member Functions

        //- Print to FatalError the names of all the types zones allocated
        template<class ZoneType>
        void checkValid(const tmpNrc<ZoneType>& zone) const;


public:

    // Constructors

        //- Construct null
        inline zoneSet();

        //- Construct copy transferring content of temporaries
        inline zoneSet(const zoneSet&);

        //- Construct copy moving content
        inline zoneSet(zoneSet&&) = default;

        //- Construct from pointZone pointer
        inline zoneSet(pointZone* pointZonePtr);

        //- Construct from cellZone pointer
        inline zoneSet(cellZone* cellZonePtr);

        //- Construct from faceZone pointer
        inline zoneSet(faceZone* faceZonePtr);

        //- Construct from pointZone, cellZone and faceZone pointers
        inline zoneSet
        (
            pointZone* pointZonePtr,
            cellZone* cellZonePtr,
            faceZone* faceZonePtr
        );

        //- Construct from pointZone
        inline zoneSet(const pointZone& pointZoneRef);

        //- Construct from cellZone
        inline zoneSet(const cellZone& cellZoneRef);

        //- Construct from faceZone
        inline zoneSet(const faceZone& faceZoneRef);

        //- Construct copy transferring content of temporaries if required
        inline zoneSet(const zoneSet&, bool allowTransfer);

        //- Construct and return a clone with a new name
        inline zoneSet clone(const word& name) const;


    // Member Functions

        //- Return true if the pointZone is allocated
        inline bool pValid() const;

        //- Return true if the cellZone is allocated
        inline bool cValid() const;

        //- Return true if the faceZone is allocated
        inline bool fValid() const;

        //- Return true if any of the zone types are allocated
        inline bool valid() const;

        //- Return true if the zone type specified by template specialisation
        //  is allocated
        template<class ZoneType>
        inline bool valid() const;

        //- Return a reference to the pointZone if allocated
        //  otherwise stop with an error
        inline const pointZone& pZone() const;

        //- Return a reference to the cellZone if allocated
        //  otherwise stop with an error
        inline const cellZone& cZone() const;

        //- Return a reference to the faceZone if allocated
        //  otherwise stop with an error
        inline const faceZone& fZone() const;

        //- Return a reference to the zone type
        //  specified by template specialisation if allocated
        //  otherwise stop with an error
        template<class ZoneType>
        inline const ZoneType& zone() const;

        //- Store the temporary zones and return the stored zoneSet
        zoneSet store() const;


    // Member Operators

        //- Assignment transferring the temporary zones
        void operator=(const zoneSet&);

        //- Assignment moving content
        inline zoneSet& operator=(zoneSet&&) = default;

        //- Assignment to pointZone, updating pZone_
        inline void operator=(const pointZone&);

        //- Assignment to cellZone, updating cZone_
        inline void operator=(const cellZone&);

        //- Assignment to faceZone, updating fZone_
        inline void operator=(const faceZone&);
};


template<>
inline bool zoneSet::valid<pointZone>() const;

template<>
inline bool zoneSet::valid<cellZone>() const;

template<>
inline bool zoneSet::valid<faceZone>() const;


template<>
inline const pointZone& zoneSet::zone<pointZone>() const;

template<>
inline const cellZone& zoneSet::zone<cellZone>() const;

template<>
inline const faceZone& zoneSet::zone<faceZone>() const;


template<class ZoneType>
inline zoneTypes zoneType();

template<>
inline zoneTypes zoneType<pointZone>();

template<>
inline zoneTypes zoneType<cellZone>();

template<>
inline zoneTypes zoneType<faceZone>();


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "zoneSetI.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //