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typedef unsigned int uint32_t;
enum MaskingOperator
{
eMaskingOperatorDefault = 0,
eMaskingOperatorAnd = 1,
eMaskingOperatorOr = 2,
eMaskingOperatorXor = 3,
eMaskingOperatorNand = 4,
eMaskingOperatorNor = 5
};
class MaskedData
{
private:
uint32_t value;
uint32_t mask;
MaskingOperator oper;
public:
MaskedData( uint32_t V = 0,
uint32_t M = 0,
MaskingOperator P = eMaskingOperatorDefault) :
value(V),
mask(M),
oper(P)
{
}
uint32_t apply()
{
switch(oper)
{
case eMaskingOperatorAnd:
return value & mask;
case eMaskingOperatorOr:
return value | mask;
case eMaskingOperatorXor:
return value ^ mask;
case eMaskingOperatorNand:
return ~(value & mask);
case eMaskingOperatorNor:
return ~(value | mask);
case eMaskingOperatorDefault: // fall through
default:
return value;
}
}
void setValue(uint32_t V)
{
value = V;
}
void setMask (uint32_t M)
{
mask = M;
}
void setOperator(MaskingOperator P)
{
oper = P;
}
};
int main()
{
MaskedData data_1(0xFF0F,0xA01F,eMaskingOperatorAnd);
MaskedData data_2(data_1.apply(),0x1AFC,eMaskingOperatorXor);
MaskedData data_3(data_2.apply(),0xFFCF,eMaskingOperatorOr);
MaskedData data_4(data_3.apply(),0xAABC,eMaskingOperatorAnd);
MaskedData data_5(data_4.apply(),0xFFAC,eMaskingOperatorNor);
MaskedData data_6(data_5.apply(),0x0000BEEF,eMaskingOperatorAnd);
return data_6.apply(); // <-- what comes out of here?
}
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