MCVariant.h

#if !defined(__MCVARIANT_H_)
#define __MCVARIANT_H_

#ident "@(#)$Id: MCVariant.h,v 1.6 2004/12/02 07:05:20 mike Exp $"

/*
 * Copyright Miba Consulting Ltd. (c) 2000-2003
 * 
 * This library is free software; 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 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include "mcllib/MCTypes.h"
#include "mcllib/MCString.h"
#include "mcllib/MCStringStream.h"
#include "mcllib/MCSerializer.h"

namespace mclpriv
{
    class MCVTImpl;
};

namespace mcllib
{
    class MCVariantType
    {
    public:
        typedef const MCVariantType& constref_MCVariantType;

        MCVariantType();
        ~MCVariantType();
        MCVariantType(const MCVariantType& vt);
        MCVariantType& operator=(const MCVariantType& vt);
        operator bool() const;
        bool isDefined() const;
        MCString toString() const;
        bool operator==(const MCVariantType& vt) const;
        bool operator<(const MCVariantType& vt) const;
        void put(MCSerializer& serializer) const;
        void put(MCStringStream& os) const;
        friend MCSerializer& operator<<(MCSerializer& os, MCVariantType& vt);
        friend MCStringStream& operator<<(MCStringStream& os,MCVariantType& vt);
        mcuint32 getTypeId() const;
        const MCString& getTypeName() const;
        static mcuint32 getTypeId(const char* typeName);
        static const MCString& getTypeName(mcuint32 typeId);
        static MCVariantType parse(const MCString& val);
    protected:
        MCVariantType(mcuint32 type);
        MCVariantType(const MCVariantType& vt, mcuint32 type);
        const mclpriv::MCVTImpl* getImpl() const;
        mclpriv::MCVTImpl* getImpl();
    private:
        // Opaque implementation data
        // Implementation information is encoded in this space
        char m_impl[16];
    };

    class MCVTBool : public MCVariantType
    {
    public:
        MCVTBool(const MCVariantType& vt);
        MCVTBool(bool val);
    };

    class MCVTNumeric : public MCVariantType
    {
    public:
        // Range of interesting numeric stuff?
    protected:
        // cannot be constructed direclt - use derived types
        MCVTNumeric(mcuint32 type);
        MCVTNumeric(const MCVariantType& vt, mcuint32 type);
    };

    class MCVTNumericFloat : public MCVTNumeric
    {
    public:
        operator mcfloat32();
        operator mcfloat64();
    protected:
        MCVTNumericFloat(mcuint32 type);
        MCVTNumericFloat(const MCVariantType& vt, mcuint32 type);
    };

    class MCVTNumericInt : public MCVTNumeric
    {
    public:
        operator mcint8();
        operator mcuint8();
        operator mcint16();
        operator mcuint16();
        operator mcint32();
        operator mcuint32();
        operator mcint64();
        operator mcuint64();
    protected:
        MCVTNumericInt(mcuint32 type);
        MCVTNumericInt(const MCVariantType& vt, mcuint32 type);
    };

    class MCVTInt8 : public MCVTNumericInt
    {
    public:
        MCVTInt8(const MCVariantType& vt);
        MCVTInt8(mcint8 val);
    };

    class MCVTUInt8 : public MCVTNumericInt
    {
    public:
        MCVTUInt8(const MCVariantType& vt);
        MCVTUInt8(mcuint8 val);
    };

    class MCVTInt16 : public MCVTNumericInt
    {
    public:
        MCVTInt16(const MCVariantType& vt);
        MCVTInt16(mcint16 val);
    };

    class MCVTUInt16 : public MCVTNumericInt
    {
    public:
        MCVTUInt16(const MCVariantType& vt);
        MCVTUInt16(mcuint16 val);
    };

    class MCVTInt32 : public MCVTNumericInt
    {
    public:
        MCVTInt32(const MCVariantType& vt);
        MCVTInt32(mcint32 val);
    };

    class MCVTUInt32 : public MCVTNumericInt
    {
    public:
        MCVTUInt32(const MCVariantType& vt);
        MCVTUInt32(mcuint32 val);
    };

    class MCVTInt64 : public MCVTNumericInt
    {
    public:
        MCVTInt64(const MCVariantType& vt);
        MCVTInt64(const mcint64& val);
    };

    class MCVTUInt64 : public MCVTNumericInt
    {
    public:
        MCVTUInt64(const MCVariantType& vt);
        MCVTUInt64(const mcuint64& val);
    };

    class MCVTFloat32 : public MCVTNumericFloat
    {
    public:
        MCVTFloat32(const MCVariantType& vt);
        MCVTFloat32(const mcfloat32& val);
    };

    class MCVTFloat64 : public MCVTNumericFloat
    {
    public:
        MCVTFloat64(const MCVariantType& vt);
        MCVTFloat64(const mcfloat64& val);
    };

    class MCVTString : public MCVariantType
    {
    public:
        MCVTString(const MCVariantType& vt);
        MCVTString(const MCString& val);
        operator MCString();
    };

};

#endif

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