dimensionedType.H

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/*---------------------------------------------------------------------------*\
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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/>.
 
Class
    Foam::dimensioned
 
Description
    Generic dimensioned Type class
 
SourceFiles
    dimensionedType.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef dimensionedType_H
#define dimensionedType_H
 
#include "word.H"
#include "direction.H"
#include "dimensionSet.H"
#include "VectorSpace.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration of friend functions and operators
class dictionary;
template<class Type>
class dimensioned;
template<class Type>
Istream& operator>>(Istream&, dimensioned<Type>&);
template<class Type>
Ostream& operator<<(Ostream&, const dimensioned<Type>&);
 
/*---------------------------------------------------------------------------*\
                         Class dimensioned Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class dimensioned
{
    // Private Data
 
        //- Variable name
        word name_;
 
        //- The dimension set
        dimensionSet dimensions_;
 
        //- The data value
        Type value_;
 
 
    // Private Member Functions
 
        //- Read the dimensions if present. Return whether dimensions were read.
        bool readDimensions
        (
            Istream& is,
            scalar& multiplier,
            const bool haveDims
        );
 
        //- Initialise from Istream
        void initialise(Istream& is, const bool haveName, const bool haveDims);
 
        //- Initialise from Istream
        void initialise
        (
            const word& name,
            const unitConversion& defaultUnits,
            Istream& is
        );
 
 
public:
 
    //- Component type
    typedef typename pTraits<Type>::cmptType cmptType;
 
 
    // Constructors
 
        //- Null constructor
        dimensioned();
 
        //- Construct given name, dimensions and value
        dimensioned(const word&, const dimensionSet&, const Type&);
 
        //- Construct given dimensions and value
        //  with the name obtained from the value
        dimensioned(const dimensionSet&, const Type&);
 
        //- Construct dimensionless given value only
        //  with a name obtained from the value
        dimensioned(const Type&);
 
        //- Construct from a dimensioned<Type> changing the name.
        dimensioned(const word&, const dimensioned<Type>&);
 
        //- Construct from Istream.
        dimensioned(Istream&);
 
        //- Construct from an Istream with a given name
        dimensioned(const word&, Istream&);
 
        //- Construct from an Istream with a given name and dimensions
        dimensioned(const word&, const dimensionSet&, Istream&);
 
        //- Construct from dictionary lookup with a given name and dimensions
        dimensioned(const word&, const dimensionSet&, const dictionary&);
 
 
    // Static member functions
 
        //- Construct from dictionary, with default dimensions and value.
        static dimensioned<Type> lookupOrDefault
        (
            const word&,
            const dictionary&,
            const dimensionSet& dims = dimless,
            const Type& defaultValue = pTraits<Type>::zero
        );
 
        //- Construct from dictionary dimensionless with value.
        static dimensioned<Type> lookupOrDefault
        (
            const word&,
            const dictionary&,
            const Type& defaultValue = pTraits<Type>::zero
        );
 
        //- Construct from dictionary, with default value.
        //  If the value is not found, it is added into the dictionary.
        static dimensioned<Type> lookupOrAddToDict
        (
            const word&,
            dictionary&,
            const dimensionSet& dims = dimless,
            const Type& defaultValue = pTraits<Type>::zero
        );
 
        //- Construct from dictionary, dimensionless with default value.
        //  If the value is not found, it is added into the dictionary.
        static dimensioned<Type> lookupOrAddToDict
        (
            const word&,
            dictionary&,
            const Type& defaultValue = pTraits<Type>::zero
        );
 
 
    // Member Functions
 
        //- Return const reference to name.
        const word& name() const;
 
        //- Return non-const reference to name.
        word& name();
 
        //- Return const reference to dimensions.
        const dimensionSet& dimensions() const;
 
        //- Return non-const reference to dimensions.
        dimensionSet& dimensions();
 
        //- Return const reference to value.
        const Type& value() const;
 
        //- Return non-const reference to value.
        Type& value();
 
        //- Return a component as a dimensioned<cmptType>
        dimensioned<cmptType> component(const direction) const;
 
        //- Return a component with a dimensioned<cmptType>
        void replace(const direction, const dimensioned<cmptType>&);
 
        //- Return transpose.
        dimensioned<Type> T() const;
 
        //- Update the value of dimensioned<Type>
        void read(const dictionary&);
 
        //- Update the value of dimensioned<Type> if found in the dictionary.
        bool readIfPresent(const dictionary&);
 
 
    // Member Operators
 
        //- Return a component as a dimensioned<cmptType>
        dimensioned<cmptType> operator[](const direction) const;
 
        void operator+=(const dimensioned<Type>&);
        void operator-=(const dimensioned<Type>&);
        void operator*=(const scalar);
        void operator/=(const scalar);
 
 
    // IOstream Operators
 
        friend Istream& operator>> <Type>(Istream&, dimensioned<Type>&);
        friend Ostream& operator<< <Type>(Ostream&, const dimensioned<Type>&);
};
 
 
template<class Type>
void writeEntry(Ostream& os, const dimensioned<Type>& dt);
 
 
// * * * * * * * * * * * * * * * Global Operators  * * * * * * * * * * * * * //
 
template<class Type, direction r>
dimensioned<typename powProduct<Type, r>::type>
pow
(
    const dimensioned<Type>&,
    typename powProduct<Type, r>::type
  = pTraits<typename powProduct<Type, r>::type>::zero
);
 
template<class Type>
dimensioned<typename outerProduct<Type, Type>::type>
sqr(const dimensioned<Type>&);
 
template<class Type>
dimensioned<scalar> magSqr(const dimensioned<Type>&);
 
template<class Type>
dimensioned<scalar> mag(const dimensioned<Type>&);
 
template<class Type>
dimensioned<Type> cmptMultiply
(
    const dimensioned<Type>&,
    const dimensioned<Type>&
);
 
template<class Type>
dimensioned<Type> cmptDivide
(
    const dimensioned<Type>&,
    const dimensioned<Type>&
);
 
template<class Type>
dimensioned<Type> max(const dimensioned<Type>&, const dimensioned<Type>&);
 
template<class Type>
dimensioned<Type> min(const dimensioned<Type>&, const dimensioned<Type>&);
 
template<class Type>
bool operator>(const dimensioned<Type>&, const dimensioned<Type>&);
 
template<class Type>
bool operator<(const dimensioned<Type>&, const dimensioned<Type>&);
 
template<class Type>
dimensioned<Type> operator+(const dimensioned<Type>&, const dimensioned<Type>&);
 
template<class Type>
dimensioned<Type> operator-(const dimensioned<Type>&);
 
template<class Type>
dimensioned<Type> operator-(const dimensioned<Type>&, const dimensioned<Type>&);
 
template<class Type>
dimensioned<Type> operator*
(
    const dimensioned<scalar>&,
    const dimensioned<Type>&
);
 
template<class Type>
dimensioned<Type> operator/
(
    const dimensioned<Type>&,
    const dimensioned<scalar>&
);
 
 
#define PRODUCT_OPERATOR(product, op, opFunc)                                  \
                                                                               \
template<class Type1, class Type2>                                             \
dimensioned<typename product<Type1, Type2>::type>                              \
operator op(const dimensioned<Type1>&, const dimensioned<Type2>&);             \
                                                                               \
template<class Type, class Form, class Cmpt, direction nCmpt>                  \
dimensioned<typename product<Type, Form>::type>                                \
operator op                                                                    \
(                                                                              \
    const dimensioned<Type>&,                                                  \
    const VectorSpace<Form,Cmpt,nCmpt>&                                        \
);                                                                             \
                                                                               \
template<class Type, class Form, class Cmpt, direction nCmpt>                  \
dimensioned<typename product<Form, Type>::type>                                \
operator op                                                                    \
(                                                                              \
    const VectorSpace<Form,Cmpt,nCmpt>&,                                       \
    const dimensioned<Type>&                                                   \
);
 
PRODUCT_OPERATOR(outerProduct, *, outer)
PRODUCT_OPERATOR(crossProduct, ^, cross)
PRODUCT_OPERATOR(innerProduct, &, dot)
PRODUCT_OPERATOR(scalarProduct, &&, dotdot)
 
#undef PRODUCT_OPERATOR
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "dimensionedType.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //