public static void Main(string[] args)
{
MathCalcResult result = null;
var input = string.Join(" ", args);
var errorMessages = new List <string>();
Expression expression = null;
try
{
var expressionFields = input.Split(';').Select(o => o.Trim());
var arguments = ParseArguments(expressionFields);
var expressionData = expressionFields.FirstOrDefault(o => !IsVariableDeclaration(o));
if (string.IsNullOrEmpty(expressionData))
{
Console.WriteLine(JsonConvert.SerializeObject(new MathCalcResult()
{
ErrorMessage = "Nelze spočítat prázdný požadavek."
}));
return;
}
expression = new Expression(expressionData, arguments.ToArray());
errorMessages.AddRange(ValidateAndGetErrors(expression));
}
catch (Exception ex)
{
if (ex is FormatException)
{
errorMessages.Add("Cannot correctly format input data");
}
}
if (expression == null)
{
errorMessages.Add("Occured error in expression parsing.");
}
if (errorMessages.Count > 0)
{
result = new MathCalcResult()
{
ErrorMessage = string.Join(Environment.NewLine, errorMessages)
};
Console.WriteLine(JsonConvert.SerializeObject(result));
return;
}
result = new MathCalcResult()
{
IsValid = true,
Result = expression.calculate(),
ComputingTime = expression.getComputingTime() * 1000.0,
};
Console.WriteLine(JsonConvert.SerializeObject(result));
}
public static void Main(string[] args)
{
MathCalcResult result;
var parser = new ExpressionParser(string.Join(" ", args));
if (parser.Empty)
{
Console.WriteLine(JsonConvert.SerializeObject(new MathCalcResult()
{
ErrorMessage = "Nelze spočítat prázdný požadavek."
}));
return;
}
if (!parser.IsValid)
{
result = new MathCalcResult()
{
ErrorMessage = string.Join(Environment.NewLine, parser.Errors)
};
Console.WriteLine(JsonConvert.SerializeObject(result));
return;
}
result = new MathCalcResult()
{
IsValid = true,
Result = parser.Expression.calculate(),
ComputingTime = parser.Expression.getComputingTime() * 1000.0,
};
Console.WriteLine(JsonConvert.SerializeObject(result));
}