Function isValidShiftAndAmountType

libsolidity/ast/Types.cpp:576–587

{

bool isValidShiftAndAmountType(Token _operator, Type const& _shiftAmountType)
{
	// Disable >>> here.
	if (_operator == Token::SHR)
		return false;
	else if (IntegerType const* otherInt = dynamic_cast<decltype(otherInt)>(&_shiftAmountType))
		return !otherInt->isSigned();
	else if (RationalNumberType const* otherRat = dynamic_cast<decltype(otherRat)>(&_shiftAmountType))
		return !otherRat->isFractional() && otherRat->integerType() && !otherRat->integerType()->isSigned();
	else
		return false;
}

}