public TextImageLine GetLineFromLineNumber(int lineNumber)
{
if (TextBuffer.IsSafeToAccessDocumentFromSnapshot(this))
{
var docLine = TextBuffer.Document.GetLineByNumber(lineNumber + 1);
return(new TextImageLine(this, lineNumber, new Span(docLine.Offset, docLine.Length), docLine.DelimiterLength));
}
if (lineOffsets is null)
{
lineOffsets = TextImageUtils.CreateLineOffsets(this);
}
TextImageUtils.GetLineInfo(lineOffsets, lineNumber, Length, out int start, out int end, out int lineBreakLength);
return(new TextImageLine(this, lineNumber, new Span(start, end - start), lineBreakLength));
}
public int GetLineNumberFromPosition(int position)
{
if ((uint)position > (uint)Length)
{
throw new ArgumentOutOfRangeException(nameof(position));
}
if (TextBuffer.IsSafeToAccessDocumentFromSnapshot(this))
{
return(TextBuffer.Document.GetLineByOffset(position).LineNumber - 1);
}
if (lineOffsets is null)
{
lineOffsets = TextImageUtils.CreateLineOffsets(this);
}
return(TextImageUtils.GetLineNumberFromPosition(lineOffsets, position, Length));
}
internal uint[] GetOrCreateLineOffsets() => lineOffsets ??= TextImageUtils.CreateLineOffsets(this);
