|
public Parse ( IEnumerable |
||
| tokens | IEnumerable |
The list of tokens. |
| return | IExpression | |
private IEnumerable<ResponseMessage> CalculateHandler(IncomingMessage message, string matchedHandle)
{
string response = string.Empty;
if (matchedHandle != null)
{
string expression = message.FullText.Substring(matchedHandle.Length).Trim();
Parser parser = new Parser();
try
{
IExpression parsedExpression = parser.Parse(expression);
object result = parsedExpression.Calculate();
response = $"{parsedExpression} = {result}";
}
catch (Exception e)
{
bool showErrors = !string.IsNullOrEmpty(matchedHandle);
if (showErrors)
{
_statsPlugin.IncrementState("Calc:Failed");
response = $"Who taught you maths? {e.Message}";
}
}
}
if (!string.IsNullOrEmpty(response))
{
_statsPlugin.IncrementState("Calc:Calced");
yield return message.ReplyToChannel($"@{message.Username}: {response}");
}
}
public void SaveLastExpFalseTest()
{
var parser = new Parser() { SaveLastExpression = false };
var e1 = parser.Parse("e");
var e2 = parser.Parse("e");
Assert.AreNotSame(e1, e2);
}
/// <summary>
/// Parses the specified function.
/// </summary>
/// <param name="function">The function.</param>
/// <returns>The parsed expression.</returns>
/// <exception cref="ArgumentNullException"><paramref name="function"/> is null.</exception>
/// <exception cref="ParserException">Error while parsing.</exception>
public IExpression Parse(string function)
{
return(Parser.Parse(Lexer.Tokenize(function)));
}
