public void Remove(int fileDescriptor)
{
if (!fileTable.TryGetValue(fileDescriptor, out Tuple <string, TextReader> value))
{
throw new FileTableException("File is not in the file table!");
}
value.Item2.Close();
fileTable.Remove(fileDescriptor);
positionTable.FreePosition(fileDescriptor);
}
public int Evaluate(MyIDictionary <string, int> symbolTable)
{
if (!symbolTable.TryGetValue(id, out int value))
{
throw new ExpressionException("Unassigned variable used!");
}
return(value);
}
public void Show()
{
while (true)
{
PrintMenu();
Console.WriteLine("Input command:");
string key = Console.ReadLine();
if (!commands.TryGetValue(key, out Command command))
{
Console.WriteLine("Invalid command provided!");
}
else
{
command.Execute();
}
}
}