CirculatorI.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2012-2018 OpenFOAM Foundation
     \\/     M anipulation  |
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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/>.
 
\*---------------------------------------------------------------------------*/
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class ContainerType>
Foam::Circulator<ContainerType>::Circulator()
:
    CirculatorBase(),
    begin_(0),
    end_(0),
    iter_(0),
    fulcrum_(0)
{}
 
 
template<class ContainerType>
Foam::Circulator<ContainerType>::Circulator(ContainerType& container)
:
    CirculatorBase(),
    begin_(container.begin()),
    end_(container.end()),
    iter_(begin_),
    fulcrum_(begin_)
{}
 
 
template<class ContainerType>
Foam::Circulator<ContainerType>::Circulator
(
    const iterator& begin,
    const iterator& end
)
:
    CirculatorBase(),
    begin_(begin),
    end_(end),
    iter_(begin),
    fulcrum_(begin)
{}
 
 
template<class ContainerType>
Foam::Circulator<ContainerType>::Circulator
(
    const Circulator<ContainerType>& rhs
)
:
    CirculatorBase(),
    begin_(rhs.begin_),
    end_(rhs.end_),
    iter_(rhs.iter_),
    fulcrum_(rhs.fulcrum_)
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
template<class ContainerType>
Foam::Circulator<ContainerType>::~Circulator()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class ContainerType>
typename Foam::Circulator<ContainerType>::size_type
Foam::Circulator<ContainerType>::size() const
{
    return end_ - begin_;
}
 
 
template<class ContainerType>
bool Foam::Circulator<ContainerType>::circulate
(
    const CirculatorBase::direction dir
)
{
    if (dir == CirculatorBase::direction::clockwise)
    {
        operator++();
    }
    else if (dir == CirculatorBase::direction::anticlockwise)
    {
        operator--();
    }
 
    return !(iter_ == fulcrum_);
}
 
 
template<class ContainerType>
void Foam::Circulator<ContainerType>::setFulcrumToIterator()
{
    fulcrum_ = iter_;
}
 
 
template<class ContainerType>
void Foam::Circulator<ContainerType>::setIteratorToFulcrum()
{
    iter_ = fulcrum_;
}
 
 
template<class ContainerType>
typename Foam::Circulator<ContainerType>::difference_type
Foam::Circulator<ContainerType>::nRotations() const
{
    return (iter_ - fulcrum_);
}
 
 
template<class ContainerType>
typename Foam::Circulator<ContainerType>::reference
Foam::Circulator<ContainerType>::next() const
{
    if (iter_ == end_ - 1)
    {
        return *begin_;
    }
 
    return *(iter_ + 1);
}
 
 
template<class ContainerType>
typename Foam::Circulator<ContainerType>::reference
Foam::Circulator<ContainerType>::prev() const
{
    if (iter_ == begin_)
    {
        return *(end_ - 1);
    }
 
    return *(iter_ - 1);
}
 
 
// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
 
template<class ContainerType>
void Foam::Circulator<ContainerType>::operator=
(
    const Circulator<ContainerType>& rhs
)
{
    // Check for assignment to self
    if (this == &rhs)
    {
        FatalErrorInFunction
            << "Attempted assignment to self"
            << abort(FatalError);
    }
 
    begin_ = rhs.begin_;
    end_ = rhs.end_;
    iter_ = rhs.iter_;
    fulcrum_ = rhs.fulcrum_;
}
 
 
template<class ContainerType>
Foam::Circulator<ContainerType>&
Foam::Circulator<ContainerType>::operator++()
{
    ++iter_;
    if (iter_ == end_)
    {
        iter_ = begin_;
    }
 
    return *this;
}
 
 
template<class ContainerType>
Foam::Circulator<ContainerType>
Foam::Circulator<ContainerType>::operator++(int)
{
    Circulator<ContainerType> tmp = *this;
    ++(*this);
    return tmp;
}
 
 
template<class ContainerType>
Foam::Circulator<ContainerType>&
Foam::Circulator<ContainerType>::operator--()
{
    if (iter_ == begin_)
    {
        iter_ = end_;
    }
    --iter_;
 
    return *this;
}
 
 
template<class ContainerType>
Foam::Circulator<ContainerType>
Foam::Circulator<ContainerType>::operator--(int)
{
    Circulator<ContainerType> tmp = *this;
    --(*this);
    return tmp;
}
 
 
template<class ContainerType>
bool Foam::Circulator<ContainerType>::operator==
(
    const Circulator<ContainerType>& c
) const
{
    return
    (
        begin_ == c.begin_
     && end_ == c.end_
     && iter_ == c.iter_
     && fulcrum_ == c.fulcrum_
    );
}
 
 
template<class ContainerType>
bool Foam::Circulator<ContainerType>::operator!=
(
    const Circulator<ContainerType>& c
) const
{
    return !(*this == c);
}
 
 
template<class ContainerType>
typename Foam::Circulator<ContainerType>::reference
Foam::Circulator<ContainerType>::operator*() const
{
    return *iter_;
}
 
 
template<class ContainerType>
typename Foam::Circulator<ContainerType>::reference
Foam::Circulator<ContainerType>::operator()() const
{
    return operator*();
}
 
 
template<class ContainerType>
typename Foam::Circulator<ContainerType>::difference_type
Foam::Circulator<ContainerType>::operator-
(
    const Circulator<ContainerType>& c
) const
{
    return iter_ - c.iter_;
}
 
 
// ************************************************************************* //