private void Result()
{
logger.Trace("Вычисление результата...");
try
{
string expression = currentExpression;
int priorityIndex;
string expressionFragment;
string result;
int i = 0;
while (i < Int32.MaxValue)
{
expression = Parse.Format(expression);
logger.Trace($"{expression} =>");
priorityIndex = Calculate.PriorityOfOperations(expression);
if (priorityIndex == -1)
{
expression = Parse.FormatResult(expression);
if (expression != CurrentExpression)
{
Example = Parse.AddingMissingBrackets(currentExpression) + '=';
CurrentExpression = expression;
Journal.AddElement(expression, Example);
logger.Trace($"Ответ: {Example + expression}");
}
break;
}
expressionFragment = Calculate.Selector(expression, priorityIndex);
result = Calculate.Arithmetic(Calculate.Converter(expressionFragment));
expression = Calculate.Replacer(expression,
expressionFragment, result);
i++;
}
if (i == Int32.MaxValue)
{
throw new Exception("Лимит попыток посчитать пример превышен.");
}
logger.Trace("Вычисление закончилось успешно...");
}
catch (NotCorrectException) { }
catch (OverflowException) { CurrentExpression = "Слишком большое число"; }
catch (DivideByZeroException)
{
Example = Parse.AddingMissingBrackets(CurrentExpression) + '=';
CurrentExpression = "Деление на ноль невозможно";
}
catch (Exception error)
{
logger.Error("ОШИБКА: |" + error.Message + "|\n " +
"\t\t\t\t\t Приложение было принудительно остановлено.");
Environment.Exit(0);
}
}
public void Arithmetic_CorrectExpression_Result(object[] expression,
string result)
{
expression[1] = Convert.ToDecimal(expression[1]);
expression[2] = Convert.ToDecimal(expression[2]);
string expected = result;
string actual = Calculate.Arithmetic(expression);
Assert.AreEqual(expected, actual);
}
public void Arithmetic_NotCorrectExpression_Exception(object[] expression)
{
Assert.Throws <Exception>(() => Calculate.Arithmetic(expression));
}