public static void Main(string[] args)
{
try
{
FractionExpressionEvaluator evaluator = new FractionExpressionEvaluator(
SettingsLoader.getWholeSeparator(),
SettingsLoader.getFractionSeparator(),
SettingsLoader.getAdditionOperator(),
SettingsLoader.getSubractionOperator(),
SettingsLoader.getMultiplicationOperator(),
SettingsLoader.getDivisionOperator(),
SettingsLoader.getNegativeCharacter(),
new FractionCalculator.Lib.FractionCalculator()
);
//
// Allow CLI argument-based operation, or interactive console.
//
if (args != null && args.Length > 0)
{
try
{
Console.WriteLine(evaluator.Eval(args));
}
catch (Exception ex)
{
Console.WriteLine("Exception: " + ex.Message);
}
}
else
{
try
{
Console.WriteLine("Please enter an expression: ");
string exp = Console.ReadLine();
if (String.IsNullOrWhiteSpace(exp))
{
throw new FormatException("Input cannot be empty.");
}
string[] consoleArgs = exp.Split(" ");
Console.WriteLine(evaluator.Eval(consoleArgs));
}
catch (Exception ex)
{
Console.WriteLine("Exception: " + ex.Message);
}
Main(null);
}
}
catch (Exception ex)
{
Console.WriteLine("Unhandled Error: " + ex.Message);
}
}
public FractionCalculatorTests()
{
evaluator = new FractionExpressionEvaluator("_", "/", "+", "-", "*", "/", "-",
new FractionCalculator.Lib.FractionCalculator()
);
}