protected void CheckTokens(string input, string[] errors, string[] tokens)
{
var sfm = new LexicalStackMachine();
var results = sfm.Parse(input);
Assert.IsTrue(results != null, "State machine results cannot be null");
Assert.IsTrue(results.Tokens != null, "Tokens collection cannot be null");
if (tokens != null)
{
Assert.IsTrue(results.Tokens.Count == tokens.Length, "Invalid number of tokens is returned. Returned:" + results.Tokens.Count + ". Expected:" + tokens.Length);
for (int i = 0; i < results.Tokens.Count; i++)
{
var returned = results.Tokens[i].Value;
var expected = tokens[i];
Assert.IsTrue(returned == expected, "Unexpected token is returned:" + returned + ". Expected:" + expected + ". Index:" + i);
}
}
// We expect some errors. So check them.
if (errors != null)
{
Assert.IsTrue(results.HasErrors == true, "No errors are returned by sfm");
var currentErrors = results.Errors;
for (int i = 0; i < currentErrors.Count; i++)
{
var returned = currentErrors[i].Value;
var expected = errors[i];
Assert.IsTrue(returned == expected, "Error is missing:" + returned + ". Expected:" + expected + ". Index:" + i);
}
}
}
private async void OnTextChanged(object sender, TextChangedEventArgs e)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
this.tbLoading.Visibility = Visibility.Visible;
var input = this.tbInput.Text;
var tokens = await Task.Run <List <LexicalToken> >(() =>
{
var sfm = new LexicalStackMachine();
var results = sfm.Parse(input);
return(results.Tokens);
});
// Stop timing.
stopwatch.Stop();
lbTokens.ItemsSource = tokens;
this.tbLoading.Text = "Time elapsed: " + stopwatch.Elapsed;
}