HashPtrTable.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 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::HashPtrTable
 
Description
    A HashTable specialization for hashing pointers.
 
SourceFiles
    HashPtrTable.C
    HashPtrTableIO.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef HashPtrTable_H
#define HashPtrTable_H
 
#include "HashTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
class Istream;
class Ostream;
 
// Forward declaration of friend functions and operators
 
template<class T, class Key, class Hash> class HashPtrTable;
 
template<class T, class Key, class Hash>
Istream& operator>>(Istream&, HashPtrTable<T, Key, Hash>&);
 
template<class T, class Key, class Hash>
Ostream& operator<<(Ostream&, const HashPtrTable<T, Key, Hash>&);
 
 
/*---------------------------------------------------------------------------*\
                        Class HashPtrTable Declaration
\*---------------------------------------------------------------------------*/
 
template<class T, class Key=word, class Hash=string::hash>
class HashPtrTable
:
    public HashTable<T*, Key, Hash>
{
    // Private Member Functions
 
        //- Read from Istream using given Istream constructor class
        template<class INew>
        void read(Istream&, const INew& inewt);
 
        //- Read from dictionary using given dictionary constructor class
        template<class INew>
        void read(const dictionary& dict, const INew& inewt);
 
 
 
public:
 
    typedef typename HashTable<T*, Key, Hash>::iterator iterator;
    typedef typename HashTable<T*, Key, Hash>::const_iterator const_iterator;
 
 
    // Constructors
 
        //- Construct given initial table size
        HashPtrTable(const label size = 128);
 
        //- Construct from Istream using given Istream constructor class
        template<class INew>
        HashPtrTable(Istream&, const INew&);
 
        //- Construct from Istream using default Istream constructor class
        HashPtrTable(Istream&);
 
        //- Construct from dictionary using default dictionary constructor
        //  class
        HashPtrTable(const dictionary&);
 
        //- Construct as copy
        HashPtrTable(const HashPtrTable<T, Key, Hash>&);
 
 
    //- Destructor
    ~HashPtrTable();
 
 
    // Member Functions
 
        // Edit
 
            //- Remove and return the pointer specified by given iterator
            T* remove(iterator&);
 
            //- Erase an hashedEntry specified by given iterator
            bool erase(iterator&);
 
            //- Clear all entries from table
            void clear();
 
            //- Write
            void write(Ostream& os) const;
 
 
    // Member Operators
 
        void operator=(const HashPtrTable<T, Key, Hash>&);
 
 
    // IOstream Operators
 
        friend Istream& operator>> <T, Key, Hash>
        (
            Istream&,
            HashPtrTable<T, Key, Hash>&
        );
 
        friend Ostream& operator<< <T, Key, Hash>
        (
            Ostream&,
            const HashPtrTable<T, Key, Hash>&
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#   include "HashPtrTable.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //