private PartialParseResult TryAcceptChange(Span target, TextChange change, PartialParseResult acceptResult = PartialParseResult.Accepted)
{
string content = change.ApplyChange(target);
if (StartsWithKeyword(content))
{
return PartialParseResult.Rejected | PartialParseResult.SpanContextChanged;
}
return acceptResult;
}
protected virtual SpanBuilder UpdateSpan(Span target, TextChange normalizedChange)
{
string newContent = normalizedChange.ApplyChange(target);
SpanBuilder newSpan = new SpanBuilder(target);
newSpan.ClearSymbols();
foreach (ISymbol sym in Tokenizer(newContent))
{
sym.OffsetStart(target.Start);
newSpan.Accept(sym);
}
if (target.Next != null)
{
SourceLocation newEnd = SourceLocationTracker.CalculateNewLocation(target.Start, newContent);
target.Next.ChangeStart(newEnd);
}
return newSpan;
}