public ITextIterator BuildTextIterator(ProvidedDocumentInformation info)
{
Debug.Assert(info != null);
return new ForwardTextIterator(info.TextBuffer, info.EndOffset);
}
public ISearchResult FindNext(SearchOptions options)
{
// insanity check
Debug.Assert(searchStrategy != null);
Debug.Assert(documentIterator != null);
Debug.Assert(textIteratorBuilder != null);
Debug.Assert(options != null);
if (info != null && textIterator != null && documentIterator.CurrentFileName != null) {
if (info.FileName != documentIterator.CurrentFileName) { // create new iterator, if document changed
info = documentIterator.Current;
textIterator = textIteratorBuilder.BuildTextIterator(info);
} else { // old document -> initialize iterator position to caret pos
textIterator.Position = info.CurrentOffset;
}
ISearchResult result = CreateNamedSearchResult(searchStrategy.FindNext(textIterator, options));
if (result != null) {
info.CurrentOffset = textIterator.Position;
return result;
}
}
// not found or first start -> move forward to the next document
if (documentIterator.MoveForward()) {
info = documentIterator.Current;
// document is valid for searching -> set iterator & fileName
if (info != null && info.TextBuffer != null && info.EndOffset >= 0 && info.EndOffset < info.TextBuffer.Length) {
textIterator = textIteratorBuilder.BuildTextIterator(info);
} else {
textIterator = null;
}
return FindNext(options);
}
return null;
}