/// Calculates the delta between two timestamps.
///
/// \param other The subtrahend.
///
/// \return The difference between this object and the other object.
///
/// \throw std::runtime_error If the subtraction would result in a negative time
/// delta, which are currently not supported.
datetime::delta
datetime::timestamp::operator-(const datetime::timestamp& other) const
{
if ((*this) < other) {
throw std::runtime_error(
F("Cannot subtract %s from %s as it would result in a negative "
"datetime::delta, which are not supported") % other % (*this));
}
return datetime::delta::from_microseconds(to_microseconds() -
other.to_microseconds());
}
/// Calculates the delta between two timestamps.
///
/// \param other The subtrahend.
///
/// \return The difference between this object and the other object.
datetime::delta
datetime::timestamp::operator-(const datetime::timestamp& other) const
{
return datetime::delta::from_microseconds(to_microseconds() -
other.to_microseconds());
}
/// Binds a timestamp to a statement parameter.
///
/// \param stmt The statement to which to bind the parameter.
/// \param field The name of the parameter; must exist.
/// \param timestamp The value to bind.
void
store::bind_timestamp(sqlite::statement& stmt, const char* field,
const datetime::timestamp& timestamp)
{
stmt.bind(field, timestamp.to_microseconds());
}
/// Checks if a timestamp is after or equal to another.
///
/// \param other The object to compare to.
///
/// \return True if this timestamp comes after other or is equal to it;
/// false otherwise.
bool
datetime::timestamp::operator>=(const datetime::timestamp& other) const
{
return to_microseconds() >= other.to_microseconds();
}