public void HighlightSyntax()
{
LayoutManager.RemoveTemporaryAttribute(NSStringAttributeKey.ForegroundColor, new NSRange(0, Value.Length));
Rule currentRule = null;
int ruleStartIndex = 0;
int index = 0;
foreach (char c in Value)
{
if (currentRule != null)
{
// check if body of match ended
switch (currentRule.CheckStatus(c))
{
case Rule.Status.End:
LayoutManager.AddTemporaryAttribute(
NSStringAttributeKey.ForegroundColor,
currentRule.Color,
new NSRange(ruleStartIndex, index - ruleStartIndex));
currentRule = null;
break;
case Rule.Status.Terminate:
LayoutManager.AddTemporaryAttribute(
NSStringAttributeKey.ForegroundColor,
currentRule.Color,
new NSRange(ruleStartIndex, index - ruleStartIndex + 1));
currentRule = null;
index++;
continue;
}
}
// check for a match
if (currentRule == null)
{
currentRule = Rules.FirstOrDefault(x => x.Initiators.Contains(c));
ruleStartIndex = index;
}
index++;
}
if (currentRule != null)
{
LayoutManager.AddTemporaryAttribute(
NSStringAttributeKey.ForegroundColor,
currentRule.Color,
new NSRange(ruleStartIndex, Value.Length - ruleStartIndex));
}
}