/// <summary>
/// Get fragment of text around Start place. Returns maximal mathed to pattern fragment.
/// </summary>
/// <param name="allowedSymbolsPattern">Allowed chars pattern for fragment</param>
/// <returns>Range of found fragment</returns>
public Range GetFragment(string allowedSymbolsPattern, RegexOptions options)
{
Range r = new Range(tb);
r.Start = Start;
Regex regex = new Regex(allowedSymbolsPattern, options);
//go left, check symbols
while (r.GoLeftThroughFolded())
{
if (!regex.IsMatch(r.CharAfterStart.ToString()))
{
r.GoRightThroughFolded();
break;
}
}
Place startFragment = r.Start;
r.Start = Start;
//go right, check symbols
do
{
if (!regex.IsMatch(r.CharAfterStart.ToString()))
{
break;
}
} while (r.GoRightThroughFolded());
Place endFragment = r.Start;
return(new Range(tb, startFragment, endFragment));
}
void GoLeftBracket(FastColoredTextBox tb, char leftBracket, char rightBracket)
{
FastColoredTextBoxNS.Range range = tb.Selection.Clone();//need to clone because we will move caret
int counter = 0;
int maxIterations = maxBracketSearchIterations;
while (range.GoLeftThroughFolded())//move caret left
{
if (range.CharAfterStart == leftBracket)
{
counter++;
}
if (range.CharAfterStart == rightBracket)
{
counter--;
}
if (counter == 1)
{
//found
tb.Selection.Start = range.Start;
tb.DoSelectionVisible();
break;
}
//
maxIterations--;
if (maxIterations <= 0)
{
break;
}
}
tb.Invalidate();
}
