public async Task <byte[]> LoadBytesFromPath(RelativePath path)
{
var fullPath = ExtractedModlistFolder !.Dir.Combine(path);
if (!fullPath.IsFile)
{
throw new Exception($"Cannot load inlined data {path} file does not exist");
}
return(await fullPath.ReadAllBytesAsync());
}
public static bool RunTest(string toolchainName, Compiler compile, Exe runner, File source)
{
var destPath = tests_results.Combine(source);
var sourcePath = tests.Combine(source);
var expected = sourcePath.DropExtension().Combine(Ext(".o"));
Console.Write($"\x1b[KRunning test {source} ({toolchainName}) ");
destPath.DirName().Create();
UserErrorException exception = null;
try {
CompileToFile(compile, sourcePath, destPath);
} catch (UserErrorException e) {
exception = e;
}
if (exception != null)
{
Console.WriteLine("");
Console.WriteLine("\x1b[1;31mFail\x1b[m");
Console.WriteLine($"\x1b[1;33m{exception.Message}\x1b[m\n");
return(false);
}
else
{
var actualStr = runner.Run(destPath);
var expectedStr = expected.Read();
if (actualStr != expectedStr)
{
Console.WriteLine("\x1b[1;31mFail\x1b[m");
Console.WriteLine($"\x1b[1;33m{source}: expected {expectedStr} but got {actualStr}.\x1b[m\n");
return(false);
}
else
{
Console.Write("\x1b[1;32mOK\x1b[m\n"); // \r at the end for quiet
return(true);
}
}
}
/// <summary>
/// Executes the actual algorithm.
/// </summary>
protected override void DoRun()
{
float distance;
ushort edgeProfile;
var enumerator1 = _source.GetEdgeEnumerator();
var enumerator2 = _source.GetEdgeEnumerator();
for (uint v = 0; v < _source.VertexCount; v++)
{
enumerator1.MoveTo(v);
while (enumerator1.MoveNext())
{
EdgeDataSerializer.Deserialize(enumerator1.Data0,
out distance, out edgeProfile);
var accessible1 = false;
var weight1 = _weightHandler.CalculateWeightAndDir(edgeProfile, distance, out accessible1);
if (enumerator1.DataInverted)
{
var dir = weight1.Direction;
dir.Reverse();
weight1.Direction = dir;
}
if (!accessible1)
{ // not accessible.
continue;
}
var direction1 = weight1.Direction;
var edge1 = enumerator1.DirectedEdgeId();
// look at the neighbours of this edge.
enumerator2.MoveTo(enumerator1.To);
_restrictions.Update(enumerator1.To);
while (enumerator2.MoveNext())
{
var turn = new Turn(new OriginalEdge(v, enumerator1.To), Constants.NO_VERTEX);
EdgeDataSerializer.Deserialize(enumerator2.Data0,
out distance, out edgeProfile);
var accessible2 = false;
var weight2 = _weightHandler.CalculateWeightAndDir(edgeProfile, distance, out accessible2);
if (enumerator2.DataInverted)
{
var dir = weight2.Direction;
dir.Reverse();
weight2.Direction = dir;
}
if (!accessible2)
{ // not accessible.
continue;
}
var direction2 = weight2.Direction;
turn.Vertex3 = enumerator2.To;
if (turn.IsUTurn)
{ // is a u-turn, leave this out!
continue;
}
var direction = Dir.Combine(direction1, direction2);
if (direction.F &&
turn.IsRestrictedBy(_restrictions))
{ // turn is restricted.
direction.F = false;
}
if (!direction.F)
{ // there is no possible combination for these two edges.
continue;
}
// ok, we need to add this edge, it's a non-restricted turn, not a u-turn and edges are in correct direction.
var edge2 = enumerator2.DirectedEdgeId();
_weightHandler.AddOrUpdateEdge(_target, edge1.Raw, edge2.Raw, Constants.NO_VERTEX, true,
weight1.Weight);
//direction.Reverse();
_weightHandler.AddOrUpdateEdge(_target, edge2.Raw, edge1.Raw, Constants.NO_VERTEX, false,
weight1.Weight);
}
}
}
}
/// <summary>
/// Calculates witness paths.
/// </summary>
public virtual void Calculate(DirectedGraph graph, WeightHandler <T> weightHandler, uint vertex,
uint source, Dictionary <uint, Shortcut <T> > targets, int maxSettles, int hopLimit)
{
pathTree.Clear();
pointerHeap.Clear();
var forwardSettled = new HashSet <uint>();
var backwardSettled = new HashSet <uint>();
var forwardTargets = new HashSet <uint>();
var backwardTargets = new HashSet <uint>();
var maxWeight = 0f;
foreach (var targetPair in targets)
{
var target = targetPair.Key;
var shortcut = targetPair.Value;
var e = new OriginalEdge(source, target);
var shortcutForward = weightHandler.GetMetric(shortcut.Forward);
if (shortcutForward > 0 && shortcutForward < float.MaxValue)
{
forwardTargets.Add(e.Vertex2);
if (shortcutForward > maxWeight)
{
maxWeight = shortcutForward;
}
}
var shortcutBackward = weightHandler.GetMetric(shortcut.Backward);
if (shortcutBackward > 0 && shortcutBackward < float.MaxValue)
{
backwardTargets.Add(e.Vertex2);
if (shortcutBackward > maxWeight)
{
maxWeight = shortcutBackward;
}
}
}
// queue the source.
pathTree.Clear();
pointerHeap.Clear();
var p = pathTree.AddSettledVertex(source, new WeightAndDir <float>()
{
Direction = new Dir(true, true),
Weight = 0
}, 0);
pointerHeap.Push(p, 0);
// dequeue vertices until stopping conditions are reached.
var cVertex = Constants.NO_VERTEX;
WeightAndDir <float> cWeight;
var cHops = uint.MaxValue;
var enumerator = graph.GetEdgeEnumerator();
while (pointerHeap.Count > 0)
{
var cPointer = pointerHeap.Pop();
pathTree.GetSettledVertex(cPointer, out cVertex, out cWeight, out cHops);
if (cVertex == vertex)
{
continue;
}
if (cWeight.Weight >= maxWeight)
{
break;
}
if (forwardSettled.Contains(cVertex) ||
forwardTargets.Count == 0 ||
forwardSettled.Count > maxSettles)
{
cWeight.Direction = new Dir(false, cWeight.Direction.B);
}
if (backwardSettled.Contains(cVertex) ||
backwardTargets.Count == 0 ||
backwardSettled.Count > maxSettles)
{
cWeight.Direction = new Dir(cWeight.Direction.F, false);
}
if (cWeight.Direction.F)
{
forwardSettled.Add(cVertex);
if (forwardTargets.Contains(cVertex))
{ // target reached, evaluate it as a shortcut.
Shortcut <T> shortcut;
if (targets.TryGetValue(cVertex, out shortcut))
{
var shortcutForward = weightHandler.GetMetric(shortcut.Forward);
if (shortcutForward > cWeight.Weight)
{ // a witness path was found, don't add a shortcut.
shortcut.Forward = weightHandler.Zero;
targets[cVertex] = shortcut;
}
}
forwardTargets.Remove(cVertex);
if (forwardTargets.Count == 0)
{
if (backwardTargets.Count == 0)
{
break;
}
cWeight.Direction = new Dir(false, cWeight.Direction.B);
if (!cWeight.Direction.F && !cWeight.Direction.B)
{
continue;
}
}
}
}
if (cWeight.Direction.B)
{
backwardSettled.Add(cVertex);
if (backwardTargets.Contains(cVertex))
{ // target reached, evaluate it as a shortcut.
Shortcut <T> shortcut;
if (targets.TryGetValue(cVertex, out shortcut))
{
var shortcutBackward = weightHandler.GetMetric(shortcut.Backward);
if (shortcutBackward > cWeight.Weight)
{ // a witness path was found, don't add a shortcut.
shortcut.Backward = weightHandler.Zero;
targets[cVertex] = shortcut;
}
}
backwardTargets.Remove(cVertex);
if (backwardTargets.Count == 0)
{
if (forwardTargets.Count == 0)
{
break;
}
cWeight.Direction = new Dir(cWeight.Direction.F, false);
if (!cWeight.Direction.F && !cWeight.Direction.B)
{
continue;
}
}
}
}
if (cHops + 1 >= hopLimit)
{
continue;
}
if (forwardSettled.Count > maxSettles &&
backwardSettled.Count > maxSettles)
{
continue;
}
enumerator.MoveTo(cVertex);
while (enumerator.MoveNext())
{
var nVertex = enumerator.Neighbour;
var nWeight = ContractedEdgeDataSerializer.Deserialize(enumerator.Data0);
nWeight = new WeightAndDir <float>()
{
Direction = Dir.Combine(cWeight.Direction, nWeight.Direction),
Weight = cWeight.Weight + nWeight.Weight
};
if (nWeight.Direction.F &&
forwardSettled.Contains(nVertex))
{
nWeight.Direction = new Dir(false, nWeight.Direction.B);
}
if (nWeight.Direction.B &&
backwardSettled.Contains(nVertex))
{
nWeight.Direction = new Dir(nWeight.Direction.F, false);
}
if (!nWeight.Direction.F && !nWeight.Direction.B)
{
continue;
}
var nPoiner = pathTree.AddSettledVertex(nVertex, nWeight, cHops + 1);
pointerHeap.Push(nPoiner, nWeight.Weight);
}
}
}