instant.H 3.88 KB
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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
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    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
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     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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    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.
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    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
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    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
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Class
    Foam::instant

Description
    An instant of time. Contains the time value and name.

SourceFiles
    instant.C

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

#ifndef instant_H
#define instant_H

#include "word.H"
#include "scalar.H"

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

namespace Foam
{

// Forward declaration of friend functions and operators

class instant;

// Friend Operators

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bool operator==(const instant&, const instant&);
bool operator!=(const instant&, const instant&);
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// IOstream Operators

Istream& operator>>(Istream&, instant&);
Ostream& operator<<(Ostream&, const instant&);


/*---------------------------------------------------------------------------*\
                           Class instant Declaration
\*---------------------------------------------------------------------------*/

class instant
{
    // Private data

        scalar value_;
        word name_;

public:

    // Public classes

        //- Less function class used in sorting instants
        class less
        {
        public:

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            bool operator()(const instant& a, const instant& b) const
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            {
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                return a.value() < b.value();
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            }
        };


    // Static data members

        static const char* const typeName;


    // Constructors

        //- Construct null
        instant();

        //- Construct from components
        instant(const scalar, const word&);

        //- Construct from time value
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        explicit instant(const scalar);
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        //- Construct from word
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        explicit instant(const word&);
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    // Member Functions

        // Access

            //- Value (const access)
            scalar value() const
            {
                return value_;
            }

            //- Value (non-const access)
            scalar& value()
            {
                return value_;
            }

            //- Name (const access)
            const word& name() const
            {
                return name_;
            }

            //- Name (non-const access)
            word& name()
            {
                return name_;
            }

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            //- Comparison used for instants to be equal
            bool equal(const scalar) const;

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    // Friend Operators

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        friend bool operator==(const instant&, const instant&);
        friend bool operator!=(const instant&, const instant&);
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    // IOstream Operators

        friend Istream& operator>>(Istream&, instant&);
        friend Ostream& operator<<(Ostream&, const instant&);
};


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

} // End namespace Foam

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

#endif

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