/// <summary>
/// Creates a single target
/// </summary>
/// <param name="start"></param>
/// <param name="length"></param>
/// <param name="speed"></param>
/// <returns></returns>
private StructureValue CreateTarget(double start, double length, double speed)
{
NameSpace defaultNameSpace = OverallNameSpaceFinder.INSTANCE.findByName(EFSSystem.Dictionaries[0], "Default");
Structure structureType =
(Structure)
EFSSystem.FindType(
defaultNameSpace,
"TargetStruct");
StructureValue value = new StructureValue(structureType);
Field speedV = value.CreateField(value, "Speed", structureType);
speedV.Value = new DoubleValue(EFSSystem.DoubleType, speed);
Field location = value.CreateField(value, "Location", structureType);
location.Value = new DoubleValue(EFSSystem.DoubleType, start);
Field lengthV = value.CreateField(value, "Length", structureType);
lengthV.Value = new DoubleValue(EFSSystem.DoubleType, length);
Enum targetType = (Enum)EFSSystem.FindType(defaultNameSpace, "TargetTypeEnum");
Field type = value.CreateField(value, "Type", structureType);
type.Value = targetType.DefaultValue;
return(value);
}
/// <summary>
/// Provides the value of the function
/// </summary>
/// <param name="context"></param>
/// <param name="actuals">the actual parameters values</param>
/// <param name="explain"></param>
/// <returns>The value for the function application</returns>
public override IValue Evaluate(InterpretationContext context, Dictionary <Actual, IValue> actuals,
ExplanationPart explain)
{
IValue retVal = null;
int token = context.LocalScope.PushContext();
AssignParameters(context, actuals);
Collection collectionType =
(Collection)
EFSSystem.FindType(
OverallNameSpaceFinder.INSTANCE.findByName(EFSSystem.Dictionaries[0],
"Default"),
"TargetsCol");
ListValue collection = new ListValue(collectionType, new List <IValue>());
Function function = context.FindOnStack(Targets).Value as Function;
if (function != null && !function.Name.Equals("EMPTY"))
{
Graph graph1 = createGraphForValue(context, function, explain);
ComputeTargets(graph1.Function, collection);
}
context.LocalScope.PopContext(token);
retVal = collection;
return(retVal);
}
/// <summary>
/// Coputes targets from the function and adds them to the collection
/// </summary>
/// <param name="function">Function containing targets</param>
/// <param name="collection">Collection to be filled with targets</param>
private void ComputeTargets(Function function, ListValue collection)
{
if (function != null)
{
Graph graph = function.Graph;
if (graph != null && graph.Segments.Count > 1)
{
NameSpace defaultNameSpace = OverallNameSpaceFinder.INSTANCE.findByName(EFSSystem.Dictionaries[0],
"Default");
Structure structureType = (Structure)
EFSSystem.FindType(
defaultNameSpace,
"TargetStruct"
);
double prevSpeed = graph.Segments[0].Evaluate(graph.Segments[0].Start);
for (int i = 1; i < graph.Segments.Count; i++)
{
Graph.Segment s = graph.Segments[i];
StructureValue value = new StructureValue(structureType);
Field speed = value.CreateField(value, "Speed", structureType);
speed.Value = new DoubleValue(EFSSystem.DoubleType, s.Evaluate(s.Start));
Field location = value.CreateField(value, "Location", structureType);
location.Value = new DoubleValue(EFSSystem.DoubleType, s.Start);
Field length = value.CreateField(value, "Length", structureType);
length.Value = SegmentLength(s.End);
Enum targetType = (Enum)EFSSystem.FindType(defaultNameSpace, "TargetTypeEnum");
Field type = value.CreateField(value, "Type", structureType);
type.Value = targetType.DefaultValue;
// Only add the target for the current segment to the collection if it brings a reduction in permitted speed
if (s.Evaluate(s.Start) < prevSpeed)
{
collection.Val.Add(value);
}
// But even if it is not added to the collection of targets, this segment is now the reference speed
prevSpeed = s.Evaluate(s.Start);
}
}
}
}
private static ListValue get_message_packets(DBMessage message, NameSpace nameSpace, EFSSystem system)
{
ListValue retVal;
Collection collectionType = (Collection) system.FindType(nameSpace, "Collection1");
Structure subStructure1Type = (Structure) system.FindType(nameSpace, "SubStructure1");
string packetLocation = "Messages.PACKET.";
if (nameSpace.FullName.Contains("TRAIN_TO_TRACK"))
{
packetLocation += "TRAIN_TO_TRACK.Message";
}
else
{
packetLocation += "TRACK_TO_TRAIN.Message";
}
Structure packetStructureType = (Structure) system.FindType(nameSpace, packetLocation);
retVal = new ListValue(collectionType, new List<IValue>());
foreach (DBPacket packet in message.Packets)
{
DBField nidPacketField = packet.Fields[0] as DBField;
if (nidPacketField.Value != "255") // 255 means "end of information"
{
int packetId = int.Parse(nidPacketField.Value);
StructureValue subStructure = FindStructure(packetId);
int currentIndex = 0;
FillStructure(nameSpace, packet.Fields, ref currentIndex, subStructure);
StructureValue subStructure1 = new StructureValue(subStructure1Type);
// For Balise messages, we have an extra level of information to fill, so here we define StructureVal in one of two ways
StructureValue structureVal;
if (subStructure1.SubVariables.Count == 1 &&
subStructure1.SubVariables.ContainsKey("TRACK_TO_TRAIN"))
{
// For a Balise message, we have an extra level of structures for TRACK_TO_TRAIN
structureVal = new StructureValue(packetStructureType);
subStructure1.SubVariables["TRACK_TO_TRAIN"].Value = structureVal;
}
else
{
// For RBC, the collection directly holds the different packet types
structureVal = subStructure1;
}
// Find the right variable in the packet to add the structure we just created
foreach (KeyValuePair<string, IVariable> pair in structureVal.SubVariables)
{
string variableName = pair.Key;
if (subStructure.Structure.FullName.Contains(variableName))
{
pair.Value.Value = subStructure;
retVal.Val.Add(subStructure1);
break;
}
}
}
}
return retVal;
}
