DynamicField.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::DynamicField
 
Description
    Dynamically sized Field.
 
SourceFiles
    DynamicFieldI.H
    DynamicField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef DynamicField_H
#define DynamicField_H
 
#include "Field.H"
#include "StaticAssert.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration of friend functions and operators
 
template<class T, unsigned SizeInc, unsigned SizeMult, unsigned SizeDiv>
class DynamicField;
 
template<class T, unsigned SizeInc, unsigned SizeMult, unsigned SizeDiv>
Ostream& operator<<
(
    Ostream&,
    const DynamicField<T, SizeInc, SizeMult, SizeDiv>&
);
 
template<class T, unsigned SizeInc, unsigned SizeMult, unsigned SizeDiv>
Istream& operator>>
(
    Istream&,
    DynamicField<T, SizeInc, SizeMult, SizeDiv>&
);
 
 
/*---------------------------------------------------------------------------*\
                           Class DynamicField Declaration
\*---------------------------------------------------------------------------*/
 
template<class T, unsigned SizeInc=0, unsigned SizeMult=2, unsigned SizeDiv=1>
class DynamicField
:
    public Field<T>
{
    //- Avoid invalid sizing parameters
    StaticAssert((SizeInc || SizeMult) && SizeDiv);
 
    // Private data
 
        //- The capacity (allocated size) of the underlying field.
        label capacity_;
 
 
public:
 
    // Static Member Functions
 
        //- Return a null field
        inline static const DynamicField<T, SizeInc, SizeMult, SizeDiv>& null()
        {
            return *reinterpret_cast
            <
                DynamicField<T, SizeInc, SizeMult, SizeDiv>*
            >(0);
        }
 
 
    // Constructors
 
        //- Construct null
        inline DynamicField();
 
        //- Construct given size.
        explicit inline DynamicField(const label);
 
        //- Construct from UList. Size set to UList size.
        //  Also constructs from DynamicField with different sizing parameters.
        explicit inline DynamicField(const UList<T>&);
 
        //- Construct by transferring the parameter contents
        explicit inline DynamicField(const Xfer<List<T> >&);
 
        //- Construct by 1 to 1 mapping from the given field
        inline DynamicField
        (
            const UList<T>& mapF,
            const labelList& mapAddressing
        );
 
        //- Construct by interpolative mapping from the given field
        inline DynamicField
        (
            const UList<T>& mapF,
            const labelListList& mapAddressing,
            const scalarListList& weights
        );
 
        //- Construct by mapping from the given field
        inline DynamicField
        (
            const UList<T>& mapF,
            const FieldMapper& map
        );
 
        //- Construct copy
        inline DynamicField(const DynamicField<T, SizeInc, SizeMult, SizeDiv>&);
 
        //- Construct by transferring the Field contents
        inline DynamicField
        (
            const Xfer<DynamicField<T, SizeInc, SizeMult, SizeDiv> >&
        );
 
        //- Construct from Istream. Size set to size of list read.
        explicit DynamicField(Istream&);
 
        //- Clone
        tmp<DynamicField<T, SizeInc, SizeMult, SizeDiv> > clone() const;
 
 
    // Member Functions
 
        // Access
 
            //- Size of the underlying storage.
            inline label capacity() const;
 
        // Edit
 
            //- Alter the size of the underlying storage.
            //  The addressed size will be truncated if needed to fit, but will
            //  remain otherwise untouched.
            //  Use this or reserve() in combination with append().
            inline void setCapacity(const label);
 
            //- Alter the addressed list size.
            //  New space will be allocated if required.
            //  Use this to resize the list prior to using the operator[] for
            //  setting values (as per List usage).
            inline void setSize(const label);
 
            //- Alter the addressed list size and fill new space with a
            //  constant.
            inline void setSize(const label, const T&);
 
            //- Alter the addressed list size.
            //  New space will be allocated if required.
            //  Use this to resize the list prior to using the operator[] for
            //  setting values (as per List usage).
            inline void resize(const label);
 
            //- Alter the addressed list size and fill new space with a
            //  constant.
            inline void resize(const label, const T&);
 
            //- Reserve allocation space for at least this size.
            //  Never shrinks the allocated size, use setCapacity() for that.
            inline void reserve(const label);
 
            //- Clear the addressed list, i.e. set the size to zero.
            //  Allocated size does not change
            inline void clear();
 
            //- Clear the list and delete storage.
            inline void clearStorage();
 
            //- Shrink the allocated space to the number of elements used.
            //  Returns a reference to the DynamicField.
            inline DynamicField<T, SizeInc, SizeMult, SizeDiv>& shrink();
 
            //- Transfer contents to the Xfer container as a plain List
            inline Xfer<List<T> > xfer();
 
 
        // Member Operators
 
            //- Append an element at the end of the list
            inline DynamicField<T, SizeInc, SizeMult, SizeDiv>& append
            (
                const T&
            );
 
            //- Append a List at the end of this list
            inline DynamicField<T, SizeInc, SizeMult, SizeDiv>& append
            (
                const UList<T>&
            );
 
            //- Remove and return the top element
            inline T remove();
 
            //- Return non-const access to an element, resizing list if
            //  necessary
            inline T& operator()(const label);
 
            //- Assignment of all addressed entries to the given value
            inline void operator=(const T&);
 
            //- Assignment from DynamicField
            inline void operator=
            (
                const DynamicField<T, SizeInc, SizeMult, SizeDiv>&
            );
 
            //- Assignment from UList
            inline void operator=(const UList<T>&);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "DynamicFieldI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#   include "DynamicField.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //