UVariant.h

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/*
*  utilite is a cross-platform library with
*  useful utilities for fast and small developing.
*  Copyright (C) 2010  Mathieu Labbe
*
*  utilite is free library: you can redistribute it and/or modify
*  it under the terms of the GNU Lesser General Public License as published by
*  the Free Software Foundation, either version 3 of the License, or
*  (at your option) any later version.
*
*  utilite 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 Lesser General Public License for more details.
*
*  You should have received a copy of the GNU Lesser General Public License
*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef UVARIANT_H
#define UVARIANT_H

#include "rtabmap/utilite/UtiLiteExp.h" // DLL export/import defines
#include <string>
#include <vector>

class UTILITE_EXP UVariant
{
public:
        enum Type{
                kBool,
                kChar,
                kUChar,
                kShort,
                kUShort,
                kInt,
                kUInt,
                kFloat,
                kDouble,
                kStr,
                kUndef
                };
public:
        UVariant();
        UVariant(const bool & value);
        UVariant(const char & value);
        UVariant(const unsigned char & value);
        UVariant(const short & value);
        UVariant(const unsigned short & value);
        UVariant(const int & value);
        UVariant(const unsigned int & value);
        UVariant(const float & value);
        UVariant(const double & value);
        UVariant(const char * value);
        UVariant(const std::string & value);

        Type type() const {return type_;}

        bool isUndef() const {return type_ == kUndef;}
        bool isBool() const {return type_ == kBool;}
        bool isChar() const {return type_ == kChar;}
        bool isUChar() const {return type_ == kUChar;}
        bool isShort() const {return type_ == kShort;}
        bool isUShort() const {return type_ == kUShort;}
        bool isInt() const {return type_ == kInt;}
        bool isUInt() const {return type_ == kUInt;}
        bool isFloat() const {return type_ == kFloat;}
        bool isDouble() const {return type_ == kDouble;}
        bool isStr() const {return type_ == kStr;}

        bool toBool() const;
        char toChar(bool * ok = 0) const;
        unsigned char toUChar(bool * ok = 0) const;
        short toShort(bool * ok = 0) const;
        unsigned short toUShort(bool * ok = 0) const;
        int toInt(bool * ok = 0) const;
        unsigned int toUInt(bool * ok = 0) const;
        float toFloat(bool * ok = 0) const;
        double toDouble(bool * ok = 0) const;
        std::string toStr(bool * ok = 0) const;

        virtual ~UVariant() {}

private:
        Type type_;
        std::vector<unsigned char> data_;
};

#endif /* UVARIANT_H */