private TextFieldInfo addRelativeToQuerySpan(QueryTextSpan querySpan, long workspaceId, ISpan spanToAdd, IImmutableList <ISpan> spansToReuse)
{
var spanBuilder = ImmutableList.CreateBuilder <ISpan>();
var indexOfQueryingSpan = spansToReuse.IndexOf(querySpan);
var spansBeforeReplacement = spansToReuse.Take(indexOfQueryingSpan);
var spansAfterReplacement = spansToReuse.Skip(indexOfQueryingSpan + 1);
spanBuilder.AddRange(spansBeforeReplacement);
if (spanToAdd is TextSpan textSpan)
{
var indexToSplit = querySpan.CursorPosition;
var textBeforeInsertedSpan = querySpan.Text.Substring(0, indexToSplit);
var textAfterInsertedSpan = querySpan.Text.Substring(indexToSplit, querySpan.Text.Length - indexToSplit);
var newQuerySpanText = $"{textBeforeInsertedSpan}{textSpan.Text}{textAfterInsertedSpan}";
var newTextSpan = new QueryTextSpan(newQuerySpanText, newQuerySpanText.Length);
spanBuilder.Add(newTextSpan);
}
else
{
var indexOfProjectQuerySymbolInSpan = querySpan.Text.IndexOfAny(ValidQuerySymbols());
var substringLength = indexOfProjectQuerySymbolInSpan >= 0 ? indexOfProjectQuerySymbolInSpan : querySpan.Text.Length;
var newQuerySpanText = querySpan.Text.Substring(0, substringLength);
var newTextSpan = new TextSpan(newQuerySpanText);
spanBuilder.Add(newTextSpan);
spanBuilder.Add(spanToAdd);
spanBuilder.Add(new QueryTextSpan());
}
spanBuilder.AddRange(spansAfterReplacement);
return(new TextFieldInfo(workspaceId, spanBuilder.ToImmutable()));
}
private static QueryInfo?searchByQuerySymbols(QueryTextSpan span, TextFieldInfo info)
{
var validQuerySymbols = info.ValidQuerySymbols();
var text = span.Text;
var possibleIndexOfQuerySymbol =
text.Substring(0, span.CursorPosition)
.Select((character, index) => ((int?)index, character))
.Where(tuple => validQuerySymbols.Contains(tuple.Item2))
.Select(tuple => tuple.Item1)
.FirstOrDefault(querySymbolIndex =>
{
var previousIndex = querySymbolIndex.Value - 1;
var isValidSymbolIndex = previousIndex < 0 || Char.IsWhiteSpace(text[previousIndex]);
return(isValidSymbolIndex);
});
if (possibleIndexOfQuerySymbol == null)
{
return(null);
}
var indexOfQuerySymbol = possibleIndexOfQuerySymbol.Value;
var startingIndex = indexOfQuerySymbol + 1;
var stringLength = text.Length - indexOfQuerySymbol - 1;
var type = getSuggestionType(text[indexOfQuerySymbol]);
var queryText = text.Substring(startingIndex, stringLength);
return(new QueryInfo(queryText, type));
}
private TextFieldInfo removeQuery(QueryTextSpan currentQuerySpan, char querySymbol)
{
var newQuerySpan = currentQuerySpan.WithoutQueryForSymbol(querySymbol);
var spansToReuse = Spans.Replace(currentQuerySpan, newQuerySpan);
return(ReplaceSpans(spansToReuse));
}
