Method AddFlow

src/station_cmd.cpp:5214–5223

* Add some flow from "origin", going via "via". * @param origin Origin of the flow. * @param via Next hop. * @param flow Amount of flow to be added. */

 * @param flow Amount of flow to be added.
 */
void FlowStatMap::AddFlow(StationID origin, StationID via, uint flow)
{
	FlowStatMap::iterator origin_it = this->find(origin);
	if (origin_it == this->end()) {
		this->emplace(origin, FlowStat(via, flow));
	} else {
		origin_it->second.ChangeShare(via, flow);
		assert(!origin_it->second.GetShares()->empty());
	}
}

/**
 * Pass on some flow, remembering it as invalid, for later subtraction from