#ifndef NUMBER_H
#define NUMBER_H

#include <bu/string.h>
#include "packedintarray.h"

class Number
{
public:
    Number( int iScale=0, int iRadix=10 );
    Number( const Bu::String &sData, int iScale=0, int iRadix=10 );
    virtual ~Number();

    Number &operator=( const Bu::String &sNum );
    Number &operator=( const Number &rhs );
    Number &operator=( const int32_t iNum );
    
    Number operator+( const Number &rhs ) const;
    Number operator-( const Number &rhs ) const;
    Number operator*( const Number &rhs ) const;
    Number operator/( const Number &rhs ) const;
    Number operator%( const Number &rhs ) const;
    Number operator-() const;

    bool operator==( const Bu::String &rhs ) const;
    bool operator==( const Number &rhs ) const;
    bool operator!=( const Number &rhs ) const;
    bool operator>( const Number &rhs ) const;
    bool operator<( const Number &rhs ) const;
    bool operator>=( const Number &rhs ) const;
    bool operator<=( const Number &rhs ) const;

    void set( const Bu::String &sNum );
    void set( const Number &sNum );
    void set( int32_t iNum );
    
    void divide( const Number &rhs, Number &q, Number &r ) const;
    bool isZero() const;

    operator Bu::String() const
    {
        return aInt.toString();
    }

    Bu::String toString() const;

    int digit( int iIdx ) const;
    void setDigit( int iIdx, int iVal );

    int getScale() const { return iScale; }
    int getEffectiveScale() const;
    void setScale( int iNewScale );
    int getIntegralDigits() const { return aInt.getSize(); }

    int32_t toInt32() const;
    Number toRadix( int iNewRadix, int iNewScale=-1 ) const;

private:
    Number add( const Number &rhs, bool bSub ) const;

private:
    int iRadix;
    int iScale;
    bool bPositive;
    PackedIntArray aInt;
    PackedIntArray aFrac;
};

Bu::Formatter &operator<<( Bu::Formatter &f, const Number &n );

#endif