public IChameleonNode ReSync(CachingLexer cachingLexer, TreeTextRange changedRange, int insertedTextLen)
{
TreeOffset currStartOffset = GetTreeStartOffset();
int currLength = GetTextLength();
Logger.Assert(changedRange.StartOffset >= currStartOffset && changedRange.EndOffset <= (currStartOffset + currLength),
"changedRange.StartOffset >= currStartOffset && changedRange.EndOffset <= (currStartOffset+currLength)");
int newLength = currLength - changedRange.Length + insertedTextLen;
LanguageService languageService = Language.LanguageService();
if (languageService != null)
{
var parser = (IPsiParser)languageService.CreateParser(new ProjectedLexer(cachingLexer, new TextRange(currStartOffset.Offset, currStartOffset.Offset + newLength)), GetPsiModule(), GetSourceFile());
TreeElement newElement = parser.ParseStatement();
if (newElement.GetTextLength() == 0)
{
return(null);
}
if ((newElement.GetTextLength() == newLength) && (";".Equals(newElement.GetText().Substring(newElement.GetTextLength() - 1))))
{
var psiFile = GetContainingNode <PsiFile>();
if (psiFile != null)
{
psiFile.ClearTables();
}
return(newElement as IRuleDeclaration);
}
}
return(null);
}