DynamicField.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2016-2022 OpenCFD Ltd.
-------------------------------------------------------------------------------
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
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_DynamicField_H
#define Foam_DynamicField_H
 
#include "Field.H"
#include "DynamicList.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
template<class T, int SizeMin> class DynamicField;
 
template<class T, int SizeMin>
inline Istream& operator>>(Istream&, DynamicField<T, SizeMin>&);
 
template<class T, int SizeMin>
inline Ostream& operator<<(Ostream&, const DynamicField<T, SizeMin>&);
 
/*---------------------------------------------------------------------------*\
                        Class DynamicField Declaration
\*---------------------------------------------------------------------------*/
 
template<class T, int SizeMin=64>
class DynamicField
:
    public Field<T>
{
    static_assert(SizeMin > 0, "Invalid min size parameter");
 
    // Private Data
 
        //- The capacity (allocated size) of the underlying field.
        label capacity_;
 
 
    // Private Member Functions
 
        //- Copy assignment from another list
        template<class ListType>
        inline void assignDynList(const ListType& list);
 
        //- Alter the size of the underlying storage
        //  The 'nocopy' option will not attempt to recover old content
        inline void doCapacity(const bool nocopy, const label len);
 
        //- Reserve allocation space for at least this size.
        //  Never shrinks the allocated size, use setCapacity() for that.
        //  The 'nocopy' option will not attempt to recover old content
        inline void doReserve(const bool nocopy, const label len);
 
        //- Reserve allocation space for at least this size.
        //  Never shrinks the allocated size, use setCapacity() for that.
        //  The 'nocopy' option will not attempt to recover old content
        inline void doResize(const bool nocopy, const label len);
 
 
public:
 
    // Static Member Functions
 
        //- Return a null field
        inline static const DynamicField<T, SizeMin>& null()
        {
            return NullObjectRef<DynamicField<T, SizeMin>>();
        }
 
 
    // Constructors
 
        //- Default construct, an empty field without allocation.
        inline constexpr DynamicField() noexcept;
 
        //- Construct empty field with given reserve size.
        inline explicit DynamicField(const label len);
 
        //- Construct given size and initial value
        inline DynamicField(const label len, const T& val);
 
        //- Construct given size and initial value of zero
        inline DynamicField(const label len, const Foam::zero);
 
        //- Copy construct
        inline DynamicField(const DynamicField<T, SizeMin>& list);
 
        //- Copy construct with different sizing parameters
        template<int AnySizeMin>
        inline DynamicField(const DynamicField<T, AnySizeMin>& list);
 
        //- Copy construct from UList. Size set to UList size.
        //  Also constructs from DynamicField with different sizing parameters.
        inline explicit DynamicField(const UList<T>& list);
 
        //- Copy construct from IndirectList
        template<class Addr>
        inline explicit DynamicField(const IndirectListBase<T, Addr>& list);
 
        //- Move construct from List contents
        inline explicit DynamicField(List<T>&& content);
 
        //- Move construct from dynamic Field contents
        inline DynamicField(DynamicField<T, SizeMin>&& content);
 
        //- Move construct with different sizing parameters
        template<int AnySizeMin>
        inline DynamicField(DynamicField<T, AnySizeMin>&& content);
 
        //- Move construct from DynamicList
        template<int AnySizeMin>
        inline DynamicField(DynamicList<T, AnySizeMin>&& list);
 
        //- Construct by 1 to 1 mapping from the given field
        inline DynamicField
        (
            const UList<T>& mapF,
            const labelUList& 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 from Istream. Size set to size of list read.
        inline explicit DynamicField(Istream& is);
 
        //- Clone
        inline tmp<DynamicField<T, SizeMin>> clone() const;
 
 
    // Member Functions
 
    // Access
 
        //- Normal lower capacity limit - the SizeMin template parameter
        static constexpr label min_size() noexcept { return SizeMin; }
 
        //- Size of the underlying storage.
        inline label capacity() const noexcept;
 
        //- Number of contiguous bytes of the underlying storage.
        //  \note Only meaningful for contiguous data
        inline std::streamsize capacity_bytes() const noexcept;
 
 
    // Sizing
 
        //- 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 len);
 
        //- Alter the size of the underlying storage,
        //- \em without retaining old content.
        //  The addressed size will be truncated if needed to fit, but will
        //  remain otherwise untouched.
        inline void setCapacity_nocopy(const label len);
 
        //- Change the value for the list capacity directly (ADVANCED, UNSAFE)
        //- Does not perform any memory management or resizing.
        inline void setCapacity_unsafe(const label len) noexcept;
 
        //- Reserve allocation space for at least this size, allocating new
        //- space if required and \em retaining old content.
        //  Never shrinks the allocated size, use setCapacity() for that.
        inline void reserve(const label len);
 
        //- Reserve allocation space for at least this size, allocating new
        //- space if required \em without retaining old content.
        //  Never shrinks the allocated size, use setCapacity() for that.
        inline void reserve_nocopy(const label len);
 
        //- Alter addressable list size, allocating new space if required
        //- while \em recovering old content.
        //  If no reallocation is required, the contents remain untouched.
        //  Otherwise new entries will be uninitialized.
        //  Use this to resize the list prior to using the operator[] for
        //  setting values (as per List usage).
        inline void resize(const label len);
 
        //- Alter addressable size and fill new space with constant value
        inline void resize(const label len, const T& val);
 
        //- Alter addressable list size, allocating new space if required
        //- \em without necessarily recovering old content.
        //  If no reallocation is required, the contents remain untouched.
        //  Otherwise all entries will be uninitialized.
        inline void resize_nocopy(const label len);
 
        //- Alias for resize()
        void setSize(const label n) { this->resize(n); }
 
        //- Alias for resize()
        void setSize(const label n, const T& val) { this->resize(n, val); }
 
        //- Clear the addressed list, i.e. set the size to zero.
        //  Allocated size does not change
        inline void clear() noexcept;
 
        //- Clear the list and delete storage.
        inline void clearStorage();
 
        //- Expand the addressable size to fit the allocated capacity.
        //  Returns the previous addressable size.
        inline label expandStorage() noexcept;
 
        //- Shrink the allocated space to the number of elements used.
        inline void shrinkStorage();
 
        //- Shrink the allocated space to the number of elements used.
        //  Returns a reference to the DynamicField.
        inline DynamicField<T, SizeMin>& shrink();
 
 
    // Edit
 
        //- Swap content, independent of sizing parameter
        template<int AnySizeMin>
        inline void swap(DynamicField<T, AnySizeMin>& other);
 
        //- Swap content with DynamicList, independent of sizing parameter
        template<int AnySizeMin>
        inline void swap(DynamicList<T, AnySizeMin>& other);
 
        //- Transfer the parameter contents into this
        inline void transfer(List<T>& list);
 
        //- Transfer the parameter contents into this
        template<int AnySizeMin>
        inline void transfer(DynamicList<T, AnySizeMin>& list);
 
        //- Transfer the parameter contents into this
        template<int AnySizeMin>
        inline void transfer(DynamicField<T, AnySizeMin>& list);
 
        //- Append an element at the end of the list
        inline void append(const T& val);
 
        //- Move append an element
        inline void append(T&& val);
 
        //- Append a List at the end of this list
        inline void append(const UList<T>& list);
 
        //- Remove and return the top element
        inline T remove();
 
 
    // Reading/writing
 
        //- Read from Istream, discarding existing contents
        //  Uses a DynamicList::readList internally
        inline Istream& readList(Istream& is);
 
 
    // Member Operators
 
        //- Return non-const access to an element, resizing list if needed
        inline T& operator()(const label i);
 
        //- Assign addressed entries to the given value
        inline void operator=(const T& val);
 
        //- Assign addressed entries to zero
        inline void operator=(const Foam::zero);
 
        //- Copy assignment
        inline void operator=(const UList<T>& list);
 
        //- Copy assignment
        inline void operator=(const DynamicField<T, SizeMin>& list);
 
        //- Move assignment
        inline void operator=(List<T>&& list);
 
        //- Move assignment
        template<int AnySizeMin>
        inline void operator=(DynamicList<T, AnySizeMin>&& list);
 
        //- Move assignment
        inline void operator=(DynamicField<T, SizeMin>&& list);
 
        //- Move assignment
        template<int AnySizeMin>
        inline void operator=(DynamicField<T, AnySizeMin>&& list);
 
 
    // IOstream Operators
 
        //- Use the readList() method to read contents from Istream.
        friend Istream& operator>> <T, SizeMin>
        (
            Istream& is,
            DynamicField<T, SizeMin>& rhs
        );
 
        //- Write to Ostream
        friend Ostream& operator<< <T, SizeMin>
        (
            Ostream& os,
            const DynamicField<T, SizeMin>& rhs
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "DynamicFieldI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //