/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  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/>.

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

#include "fieldAverageItem.H"
#include "IOstreams.H"
#include "dictionaryEntry.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::fieldAverageItem::fieldAverageItem(Istream& is)
:
    fieldName_("unknown"),
    mean_(0),
    prime2Mean_(0),
    base_(ITER),
    window_(-1.0)
{
    is.check("Foam::fieldAverageItem::fieldAverageItem(Foam::Istream&)");

    const dictionaryEntry entry(dictionary::null, is);

    fieldName_ = entry.keyword();
    entry.lookup("mean") >> mean_;
    entry.lookup("prime2Mean") >> prime2Mean_;
    base_ = baseTypeNames_[entry.lookup("base")];
    window_ = entry.lookupOrDefault<scalar>("window", -1.0);
}


// * * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * //

Foam::Istream& Foam::operator>>(Istream& is, fieldAverageItem& faItem)
{
    is.check
    (
        "Foam::Istream& Foam::operator>>"
        "(Foam::Istream&, Foam::fieldAverageItem&)"
    );

    const dictionaryEntry entry(dictionary::null, is);

    faItem.fieldName_ = entry.keyword();
    entry.lookup("mean") >> faItem.mean_;
    entry.lookup("prime2Mean") >> faItem.prime2Mean_;
    faItem.base_ = faItem.baseTypeNames_[entry.lookup("base")];
    faItem.window_ = entry.lookupOrDefault<scalar>("window", -1.0);

    return is;
}


Foam::Ostream& Foam::operator<<(Ostream& os, const fieldAverageItem& faItem)
{
    os.check
    (
        "Foam::Ostream& Foam::operator<<"
        "(Foam::Ostream&, const Foam::fieldAverageItem&)"
    );

    os  << faItem.fieldName_ << nl << token::BEGIN_BLOCK << nl;
    os.writeKeyword("mean") << faItem.mean_ << token::END_STATEMENT << nl;
    os.writeKeyword("prime2Mean") << faItem.mean_
        << token::END_STATEMENT << nl;
    os.writeKeyword("base") << faItem.baseTypeNames_[faItem.base_]
        << token::END_STATEMENT << nl;

    if (faItem.window_ > 0)
    {
        os.writeKeyword("window") << faItem.window_
            << token::END_STATEMENT << nl;
    }

    os  << token::END_BLOCK << nl;

    os.check
    (
        "Foam::Ostream& Foam::operator<<"
        "(Foam::Ostream&, const Foam::fieldAverageItem&)"
    );

    return os;
}


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