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#ifndef _KVI_KVS_VARIANT_H_
#define _KVI_KVS_VARIANT_H_
//=============================================================================
//
// File : kvi_kvs_variant.h
// Created on Tue 07 Oct 2003 04:01:19 by Szymon Stefanek
//
// This file is part of the KVIrc IRC client distribution
// Copyright (C) 2003 Szymon Stefanek <pragma at kvirc dot net>
//
// This program 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 2
// of the License, or (at your opinion) any later version.
//
// This program 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 this program. If not, write to the Free Software Foundation,
// Inc. ,51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=============================================================================
#include "kvi_settings.h"
#include "kvi_qstring.h"
#include "kvi_heapobject.h"
#include "kvi_kvs_types.h"
class KviKvsVariant;
class KviKvsArrayCast;
class KVIRC_API KviKvsNumber
{
friend class KviKvsVariant;
public:
enum DataType { Real, Integer };
protected:
union {
kvs_int_t iInteger;
kvs_real_t dReal;
} m_u;
DataType m_type;
public:
DataType type() const { return m_type; };
bool isReal() const { return m_type == Real; };
bool isInteger() const { return m_type == Integer; };
kvs_real_t real() const { return m_u.dReal; };
kvs_int_t integer() const { return m_u.iInteger; };
};
// pre-declare.. the real declarations are included below
class KviKvsHash;
class KviKvsArray;
class KviKvsVariantData
{
public:
enum Type {
Nothing = 0, // m_pData not initialized
String = 1, // TQString (scalar)
Integer = 2, // long int (scalar)
Real = 4, // double (scalar)
Array = 8, // KviKvsArray
Hash = 16, // KviKvsHash
Boolean = 32, // bool (scalar)
HObject = 64 // object, shallow! (scalar)
};
public:
unsigned int m_uRefs;
Type m_eType;
union {
kvs_int_t iInteger;
kvs_real_t * pReal;
TQString * pString;
KviKvsArray * pArray;
KviKvsHash * pHash;
bool bBoolean;
kvs_hobject_t hObject;
} m_u;
};
// This class must not have virtual funcitons nor destructor
// Otherwise it will happily crash on windows when it is
// allocated in modules and destroyed anywhere else around...
class KVIRC_API KviKvsVariant : public KviHeapObject
{
friend class KviKvsVariantComparison;
public:
KviKvsVariant();
KviKvsVariant(kvs_int_t iInteger);
KviKvsVariant(kvs_real_t dReal);
KviKvsVariant(kvs_real_t * pReal);
KviKvsVariant(bool bBoolean);
KviKvsVariant(const TQString &szString);
KviKvsVariant(const char * szString); // without this gcc chooses the conversion (const char *)->(void *) instead of (const char *)->(TQString) and obviously calls the wrong constructor
KviKvsVariant(TQString * pString);
KviKvsVariant(KviKvsArray * pArray);
KviKvsVariant(KviKvsHash * pHash);
KviKvsVariant(kvs_hobject_t hObject);
KviKvsVariant(const KviKvsVariant &v);
~KviKvsVariant();
protected:
KviKvsVariantData * m_pData;
public:
KviKvsVariantData::Type type(){ return m_pData ? m_pData->m_eType : KviKvsVariantData::Nothing; };
void setReal(kvs_real_t dReal);
void setReal(kvs_real_t * pReal);
void setInteger(kvs_int_t iInteger);
void setString(const TQString &szString);
void setString(TQString * pString);
void setArray(KviKvsArray * pArray);
void setHash(KviKvsHash * pHash);
void setBoolean(bool bBoolean);
void setHObject(kvs_hobject_t hObject);
void setNothing();
//void unset(){ setNothing(); };
void getTypeName(TQString &szBuffer) const;
bool isNothing() const { return !m_pData; };
bool isInteger() const { return m_pData ? (m_pData->m_eType == KviKvsVariantData::Integer) : false; };
bool isReal() const { return m_pData ? (m_pData->m_eType == KviKvsVariantData::Real) : false; };
bool isNumeric() const { return m_pData ? (m_pData->m_eType & (KviKvsVariantData::Integer | KviKvsVariantData::Real)) : false; };
bool isString() const { return m_pData ? (m_pData->m_eType == KviKvsVariantData::String) : false; };
bool isScalar() const { return m_pData ? (m_pData->m_eType & (KviKvsVariantData::String | KviKvsVariantData::Integer | KviKvsVariantData::Real)) : false; };
bool isArray() const { return m_pData ? (m_pData->m_eType == KviKvsVariantData::Array) : false; };
bool isHash() const { return m_pData ? (m_pData->m_eType == KviKvsVariantData::Hash) : false; };
bool isBoolean() const { return m_pData ? (m_pData->m_eType == KviKvsVariantData::Boolean) : false; };
bool isHObject() const { return m_pData ? (m_pData->m_eType == KviKvsVariantData::HObject) : false; };
bool isEmpty() const;
// returns true if this variant is nothing, false, null, 0 or an empty string
bool isEqualToNothing() const;
// evaluates Integer, Real and String rappresenting an Integer
bool asInteger(kvs_int_t &iVal) const;
// evaluates Real, Integer and String rappresenting a Real
bool asReal(kvs_real_t &dVal) const;
// evaluates Real, Integer and String rappresenting a Real or integer
bool asNumber(KviKvsNumber &n) const;
// always evaluates to a boolean value
bool asBoolean() const;
// evaluates to an object handle
bool asHObject(kvs_hobject_t &hObject) const;
// evaluates anything to a string
void asString(TQString &szBuffer) const;
void appendAsString(TQString &szBuffer) const;
// always evaluates to some number...
void castToNumber(KviKvsNumber &n) const;
// always evaluates to an integer
void castToInteger(kvs_int_t &iVal) const;
// always evaluates to an array
void castToArray(KviKvsArrayCast *c) const;
// converts this variant to an array
void convertToArray();
kvs_int_t integer() const { return m_pData ? m_pData->m_u.iInteger : 0; };
kvs_real_t real() const { return m_pData ? *(m_pData->m_u.pReal) : 0.0; };
const TQString & string() const { return m_pData ? *(m_pData->m_u.pString) : KviTQString::empty; };
KviKvsArray * array() const { return m_pData ? m_pData->m_u.pArray : 0; };
KviKvsHash * hash() const { return m_pData ? m_pData->m_u.pHash : 0; };
bool boolean() const { return m_pData ? m_pData->m_u.bBoolean : false; };
kvs_hobject_t hobject() const { return m_pData ? m_pData->m_u.hObject : (kvs_hobject_t)0; };
void copyFrom(const KviKvsVariant * v);
void copyFrom(const KviKvsVariant & v);
void takeFrom(KviKvsVariant * v);
void takeFrom(KviKvsVariant &v);
void dump(const char * prefix) const;
// returns -1 if this variant is greater than the other, 0 if are equal, 1 if the other is greater
// if bPreferNumeric is true then when comparing strings a conversion to a numeric format
// is first attempted.
int compare(const KviKvsVariant * pOther,bool bPreferNumeric = false) const;
void operator = (const KviKvsVariant &v){ copyFrom(v); };
//JSON serialization
void serialize(TQString& result);
static void serializeString(TQString& buffer);
static KviKvsVariant* unserialize(const TQString& buffer);
private:
static KviKvsVariant* unserialize(const TQChar** aux);
static KviKvsVariant* unserializeTrue(const TQChar** aux);
static KviKvsVariant* unserializeFalse(const TQChar** aux);
static KviKvsVariant* unserializeNull(const TQChar** aux);
static KviKvsVariant* unserializeArray(const TQChar** aux);
static KviKvsVariant* unserializeHash(const TQChar** aux);
static void unserializeString(const TQChar** aux,TQString& buffer);
static KviKvsVariant* unserializeString(const TQChar** aux);
static KviKvsVariant* unserializeRealOrInteger(const TQChar** aux);
static KviKvsVariant* unserializeReal(const TQChar** aux,TQString& data);
static KviKvsVariant* unserializeInteger(const TQChar** aux,TQString& data);
};
#include "kvi_kvs_array.h"
#include "kvi_kvs_hash.h"
#endif //!_KVI_KVS_VARIANT_H_
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