core/Value.hpp

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/*
  This file is part of OpenFLUID software
  Copyright (c) 2007-2010 INRA-Montpellier SupAgro


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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 == Other Usage ==

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*/


#ifndef __VALUE_HPP___
#define __VALUE_HPP___

#include <iostream>

#include <openfluid/dllexport.hpp>
#include <openfluid/base/OFException.hpp>


namespace openfluid { namespace core {

class NullValue;
class BooleanValue;
class DoubleValue;
class IntegerValue;
class StringValue;

class VectorValue;
class MatrixValue;
class MapValue;


class DLLEXPORT Value
{
  public:

    enum Type { NONE, BOOLEAN, INTEGER, DOUBLE, STRING, VECTOR, MATRIX, MAP, NULLL };

    Value() {};

    Value(const Value& /*Val*/) {};

    virtual Value& operator =(const Value& /*Other*/) { return *this; }

    virtual ~Value() {};

    virtual Type getType() const = 0;

    virtual Value* clone() const { throw openfluid::base::OFException("OpenFLUID framework","Value::clone","Value is not cloneable"); };

    inline virtual bool isSimple() const = 0;

    inline virtual bool isCompound() const = 0;

    virtual void writeToStream(std::ostream& OutStm) const = 0;

    friend std::ostream& operator<<(std::ostream& OutStm, const Value& Val)
      { Val.writeToStream(OutStm); return OutStm; };

    inline bool isDoubleValue() const { return getType() == Value::DOUBLE; };

    const DoubleValue& asDoubleValue() const;

    DoubleValue& asDoubleValue();

    inline bool isIntegerValue() const { return getType() == Value::INTEGER; };

    const IntegerValue& asIntegerValue() const;

    IntegerValue& asIntegerValue();

    inline bool isBooleanValue() const { return getType() == Value::BOOLEAN; };

    const BooleanValue& asBooleanValue() const;

    BooleanValue& asBooleanValue();

    inline bool isStringValue() const { return getType() == Value::STRING; };

    const StringValue& asStringValue() const;

    StringValue& asStringValue();

    inline bool isNullValue() const { return getType() == Value::NULLL; };

    const NullValue& asNullValue() const;

    NullValue& asNullValue();

    inline bool isVectorValue() const { return getType() == Value::VECTOR; };

    const VectorValue& asVectorValue() const;

    VectorValue& asVectorValue();

    inline bool isMatrixValue() const { return getType() == Value::MATRIX; };

    const MatrixValue& asMatrixValue() const;

    MatrixValue& asMatrixValue();

    inline bool isMapValue() const { return getType() == Value::MAP; };

    const MapValue& asMapValue() const;

    MapValue& asMapValue();

    std::string toString() const;

    static bool getValueTypeFromString(const std::string ValueTypeString, Value::Type& ValueType);

    static std::string getStringFromValueType(const Value::Type ValueType);

};


} }  // namespaces


#endif /* __VALUE_HPP___ */