internal static EdgeFactor FactorInEdgeDirection(this RouterDbEdgeEnumerator enumerator, Profile profile)
{
var factor = profile.Factor(enumerator.GetAttributes());
if (!enumerator.Forward)
{
factor = factor.Reverse;
}
return(factor);
}
public override void MoveTo(RouterDbEdgeEnumerator enumerator)
{
// reset all the things.
_enumerator = enumerator;
_weightForward = null;
_weightBackward = null;
_edgeFactor = null;
_length = null;
if (_coder.Get(enumerator.Enumerator, out var weight))
{ // get from the storage.
if (weight >= (1 << 26))
{
_weightForward = weight - (1 << 26);
_weightBackward = 0;
}
else if (weight >= (1 << 25))
{
_weightForward = 0;
_weightBackward = weight - (1 << 25);
}
else
{
_weightForward = weight;
_weightBackward = weight;
}
}
else
{ // get the factor from the profile and store it.
this.ExtractFromProfileAndStore();
}
// reverse if it needs reversing.
if (!_enumerator.Forward)
{
var t = _weightBackward;
_weightBackward = _weightForward;
_weightForward = t;
}
}
/// <summary>
/// Creates a new features list.
/// </summary>
public RouterDbFeatures(RouterDb routerDb)
{
_routerDb = routerDb;
_enumerator = routerDb.GetEdgeEnumerator();
}
public override void MoveTo(RouterDbEdgeEnumerator enumerator)
{
_edgeFactor = enumerator.FactorInEdgeDirection(_profile);
_length = enumerator.EdgeLength();
}
internal uint GetBackwardWeight(RouterDbEdgeEnumerator enumerator)
{
this.MoveTo(enumerator);
return(this.ForwardWeight);
}
/// <summary> /// Moves this profile handler to the given edge. /// </summary> /// <param name="enumerator">The enumerator.</param> public abstract void MoveTo(RouterDbEdgeEnumerator enumerator);
