public void RunCli()
{
Console.ForegroundColor = ConsoleColor.Gray;
Console.WriteLine("Welcome to Arithmetic Calculator!");
Console.WriteLine("Press ^C or type 'exit' to quit\n");
Console.ForegroundColor = ConsoleColor.White;
while (true)
{
Console.Write("> ");
var input = Console.ReadLine();
if (string.IsNullOrWhiteSpace(input))
{
continue;
}
if (input == ExitCommand)
{
return;
}
try
{
var result = _calculator.Calculate(input);
Console.WriteLine($"= {result}", ConsoleColor.Green);
}
catch (AggregateException ex)
{
foreach (var innerEx in ex.InnerExceptions)
{
WriteException(innerEx);
}
}
catch (Exception ex)
{
WriteException(ex);
}
}
}
private static void WriteError(LogSeverity severity, string format, params object[] args)
{
Console.WriteLine($"[{severity.ToString().ToUpper()}] {format}", ConsoleColor.Red, args);
}