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/*
* Copyright (C) 2007-2012 Xagasoft, All rights reserved.
*
* This file is part of the libgats library and is released under the
* terms of the license contained in the file LICENSE.
*/
#ifndef GATS_INTEGER_H
#define GATS_INTEGER_H
#include "gats/object.h"
#include <stdint.h>
#include <bu/stream.h>
namespace Gats
{
class Integer : public Gats::Object
{
public:
Integer();
Integer( int64_t iVal );
virtual ~Integer();
virtual Object *clone() const;
virtual Type getType() const { return typeInteger; }
int64_t getValue() const { return iVal; }
virtual void write( Bu::Stream &rOut ) const;
virtual void read( Bu::Stream &rIn, char cType );
template<typename itype>
static void readPackedInt( Bu::Stream &rStream, itype &rOut )
{
int8_t b;
rOut = 0;
bool bNeg;
rStream.read( &b, 1 );
bNeg = ( b&0x40 );
rOut |= (itype(b&0x3F));
int c = 0;
while( (b&0x80) )
{
rStream.read( &b, 1 );
rOut |= (itype(b&0x7F)) << (6+7*(c++));
}
if( bNeg ) rOut = -rOut;
}
template<typename itype>
static void writePackedInt( Bu::Stream &rStream, itype iIn )
{
uint8_t b;
if( iIn < 0 )
{
iIn = -iIn;
b = (iIn&0x3F);
if( iIn > b )
b |= 0x80 | 0x40;
else
b |= 0x40;
}
else
{
b = (iIn&0x3F);
if( iIn > b )
b |= 0x80;
}
rStream.write( &b, 1 );
iIn = iIn >> 6;
while( iIn )
{
b = (iIn&0x7F);
if( iIn > b )
b |= 0x80;
rStream.write( &b, 1 );
iIn = iIn >> 7;
}
}
private:
int64_t iVal;
};
};
Bu::Formatter &operator<<( Bu::Formatter &f, const Gats::Integer &i );
#endif
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