private void MarkErrorWord(SyntaxEditor editor, int lineNumber, int characterPos, string message)
{
string text = editor.Document.Lines[lineNumber].Text;
string compileText = CompileHelper.ReplaceUserOptionCalls(text);
string preceedingText = characterPos <= compileText.Length ? compileText.Substring(0, characterPos) : "";
#region Find all GetUserOption calls and discount them
int index = preceedingText.LastIndexOf("GetUserOption");
int offsetUO = "GetUserOptionValue('')".Length - "UserOptions.".Length;
int castEndPos = 0;
int castStartPos = 0;
while (index >= 0)
{
characterPos -= offsetUO;
while (preceedingText[index] != ')')
{
castEndPos = index;
index -= 1;
}
while (preceedingText[index] != '(')
{
castStartPos = index;
index -= 1;
}
characterPos -= castEndPos - castStartPos + 1;
index = preceedingText.LastIndexOf("GetUserOption", index);
}
#endregion
DocumentPosition position = new DocumentPosition(lineNumber, characterPos);
int offset = editor.Document.PositionToOffset(position);
DynamicToken token = (DynamicToken)editor.Document.Tokens.GetTokenAtOffset(offset);
SpanIndicator indicator = new WaveLineSpanIndicator("ErrorIndicator", Color.Red);
indicator.Tag = message;
SpanIndicatorLayer indicatorLayer = editor.Document.SpanIndicatorLayers[ErrorLayerKey];
if (indicatorLayer == null)
{
indicatorLayer = new SpanIndicatorLayer(ErrorLayerKey, 1);
editor.Document.SpanIndicatorLayers.Add(indicatorLayer);
}
int startOffset = Math.Min(token.StartOffset, indicatorLayer.Document.Length - 1);
int length = Math.Max(token.Length, 1);
SpanIndicator[] indicators = indicatorLayer.GetIndicatorsForTextRange(new TextRange(startOffset, startOffset + length));
foreach (SpanIndicator i in indicators)
{
// If there is already an error indicator on that word, don't add another one.
if (i.TextRange.StartOffset == startOffset && i.TextRange.Length == length)
return;
}
indicatorLayer.Add(indicator, startOffset, length);
}