public SmallTrie <(string, int)> BuildTrie(IStopsReader allStops)
{
var trie = new SmallTrie <(string, int)>();
allStops.Reset();
while (allStops.MoveNext())
{
var names = ExtractNames(allStops);
if (names == null)
{
continue;
}
foreach (var(name, dist) in names)
{
if (name == null)
{
continue;
}
trie.Add(name.ToCharArray().ToList(), (allStops.GlobalId, dist));
}
}
return(trie);
}
private static void DetectFirstMileWalks <T>(
this Profile <T> p,
IStopsReader stops, Stop stop, uint osmIndex, bool isLastMile, string name) where T : IJourneyMetric <T>
{
var failIfNoneFound = stop.Id.DatabaseId == osmIndex;
if (stop.Id.DatabaseId != osmIndex)
{
// The location is already on the Public Transport network
// We don't need to walk
// and thus don't need to check that a start walk exists
return;
}
if (p.WalksGenerator.Range() == 0)
{
// We can't walk with the current settings
return;
}
var inRange = stops.StopsAround(stop, p.WalksGenerator.Range()).ToList();
if (inRange == null ||
!inRange.Any() ||
inRange.Count == 1 && inRange[0].Id.Equals(stop.Id))
{
if (!failIfNoneFound)
{
return;
}
throw new ArgumentException(
$"Could not find a station that is in range from the {name}-location {stop.GlobalId} within {p.WalksGenerator.Range()}m. This range is calculated 'as the crows fly', try increasing the range of your walksGenerator");
}
var foundRoutes = isLastMile
? p.WalksGenerator.TimesBetween(inRange, stop)
: p.WalksGenerator.TimesBetween(stop, inRange);
if (!failIfNoneFound)
{
return;
}
if (foundRoutes == null)
{
throw CreateException(p, stop, isLastMile, name, inRange);
}
if (!foundRoutes.Any())
{
throw CreateException(p, stop, isLastMile, name, inRange);
}
foreach (var(_, distance) in foundRoutes)
{
if (distance != uint.MaxValue)
{
return;
}
}
throw CreateException(p, stop, isLastMile, name, inRange);
}
public NameIndex Build(IStopsReader reader)
{
return(new NameIndex(BuildTrie(reader), reader));
}
