public void IncIterationCount()
{
IterationCount++;
if (DataIterator != null)
{
DataIterator.FetchNextRowData(); // TODO : Replace this with another method?!
}
}
/// <summary>
/// Removes all the data from the machine
/// </summary>
public void ClearData()
{
// get a new track root (not just unlinking a previous track because we might have used move/join semantics on it)
Pos = new DataIterator()
{
Track = new Track(), Pos = 0
};
Pos.Track.Clear();
}
public bool HasMoreData()
{
bool result = (IterationCount < MaxExecutions);
if (ExeType == enForEachExecutionType.GhostService)
{
if (DataIterator != null && result)
{
// check that there is still data to iterate across ;)
result = DataIterator.HasMoreRecords();
}
}
return(result);
}
/// <summary>
/// Applies a single rule to the machine. Returns true if a rule was successfully executed (failure implies end of execution)
/// </summary>
public bool Tick()
{
// get the rule to execute
if (!Rules.TryGetValue(new Tuple <int, int>(State, Pos.Value), out var rule))
{
return(false);
}
// apply the rule
Pos.Value = rule.Item1;
State = rule.Item2;
Pos += rule.Item3;
return(true);
}
public static DataIterator operator +(DataIterator iter, int offset)
{
// create new iterator
DataIterator res = new DataIterator()
{
Track = iter.Track, Pos = iter.Pos + offset
};
// do any collapsing we can
while (res.Pos < 0 && res.Track.Prev != null)
{
res.Track = res.Track.Prev;
res.Pos += res.Track.Data.Length;
}
while (res.Pos >= res.Track.Data.Length && res.Track.Next != null)
{
res.Pos -= res.Track.Data.Length;
res.Track = res.Track.Next;
}
// return new iterator
return(res);
}
/// <summary>
/// Attempts to load the turing object with a data file and sets the initial state of 0. Returns true on success.
/// Upon failure, no action is taken (i.e. previous data and state are intact).
/// </summary>
/// <param name="path">path of file to load</param>
public bool LoadData(string path)
{
StreamReader f = null;
string line;
// get a new track
Track root = new Track();
Track current = root; // working track
int pos = 0; // position in working track
try
{
// open the file
f = new StreamReader(path);
// read all the rule data
while (true)
{
// get a line
line = f.ReadLine();
// returns null on eof
if (line == null)
{
break;
}
// empty lines are ok
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
// if we're out of track range
if (pos == current.Data.Length)
{
// link in a new track
Track t = new Track()
{
Prev = current
};
current = current.Next = t;
pos = 0;
}
// place the value
current.Data[pos++] = int.Parse(line);
}
// zero the rest of the current track
for (; pos < current.Data.Length; ++pos)
{
current.Data[pos] = ZeroValue;
}
// replace old data
Pos = new DataIterator()
{
Track = root, Pos = 0
};
// set initial state
State = 0;
// successful parse
return(true);
}
// any errors will be reported as a simple failure
catch (Exception) { return(false); }
// make sure file is properly disposed
finally { f?.Dispose(); }
}
