public static Obj Save_P(Obj fname, RelAutoBase automaton, RelAutoUpdaterBase updater, object env)
{
try {
DataWriter writer = IO.FileDataWriter(fname.GetString());
automaton.WriteState(writer);
return(SymbObj.Get(true));
}
catch (Exception e) {
updater.lastException = e;
return(SymbObj.Get(false));
}
}
public static bool Load(Obj fname, RelAutoBase automaton, RelAutoUpdaterBase updater)
{
try {
using (Stream stream = new FileStream(fname.GetString(), FileMode.Open)) {
automaton.LoadState(new StreamReader(stream));
}
}
catch (Exception e) {
updater.lastException = e;
return(false);
}
if (!automaton.FullCheck())
{
updater.lastException = new Exception("Invalid state");
return(false);
}
return(true);
}
public static Obj Error_P(RelAutoBase automaton, RelAutoUpdaterBase updater, object env)
{
Exception e = updater.lastException;
string msg = "";
if (e != null)
{
if (e is KeyViolationException || e is ForeignKeyViolationException)
{
msg = e.ToString();
}
else
{
DataWriter writer = IO.StringDataWriter();
writer.Write(e.ToString());
writer.Flush();
msg = writer.Output();
}
}
return(Conversions.StringToObj(msg));
}