public bool TryGetSmartTokenIndentation(out IndentationResult indentationResult)
{
if (ShouldUseTokenIndenter(out var token))
{
// var root = document.GetSyntaxRootSynchronously(cancellationToken);
var sourceText = Tree.GetText(CancellationToken);
var formatter = CreateSmartTokenFormatter();
var changes = formatter.FormatTokenAsync(Document.Project.Solution.Workspace, token, CancellationToken)
.WaitAndGetResult(CancellationToken);
var updatedSourceText = sourceText.WithChanges(changes);
if (LineToBeIndented.LineNumber < updatedSourceText.Lines.Count)
{
var updatedLine = updatedSourceText.Lines[LineToBeIndented.LineNumber];
var offset = updatedLine.GetFirstNonWhitespaceOffset();
if (offset != null)
{
indentationResult = new IndentationResult(
basePosition: LineToBeIndented.Start,
offset: offset.Value);
return(true);
}
}
}
indentationResult = default;
return(false);
}
public bool TryGetSmartTokenIndentation(out IndentationResult indentationResult)
{
if (_service.ShouldUseTokenIndenter(this, out var token))
{
var changes = SmartTokenFormatter.FormatToken(token, CancellationToken);
var updatedSourceText = Text.WithChanges(changes);
if (LineToBeIndented.LineNumber < updatedSourceText.Lines.Count)
{
var updatedLine = updatedSourceText.Lines[LineToBeIndented.LineNumber];
var nonWhitespaceOffset = updatedLine.GetFirstNonWhitespaceOffset();
if (nonWhitespaceOffset != null)
{
// 'nonWhitespaceOffset' is simply an int indicating how many
// *characters* of indentation to include. For example, an indentation
// string of \t\t\t would just count for nonWhitespaceOffset of '3' (one
// for each tab char).
//
// However, what we want is the true columnar offset for the line.
// That's what our caller (normally the editor) needs to determine where
// to actually put the caret and what whitespace needs to proceed it.
//
// This can be computed with GetColumnFromLineOffset which again looks
// at the contents of the line, but this time evaluates how \t characters
// should translate to column chars.
var offset = updatedLine.GetColumnFromLineOffset(nonWhitespaceOffset.Value, _tabSize);
indentationResult = new IndentationResult(basePosition: LineToBeIndented.Start, offset: offset);
return(true);
}
}
}
indentationResult = default;
return(false);
}
public static string GetIndentationString(this IndentationResult indentationResult, SourceText sourceText, bool useTabs, int tabSize)
{
var baseLine = sourceText.Lines.GetLineFromPosition(indentationResult.BasePosition);
var baseOffsetInLine = indentationResult.BasePosition - baseLine.Start;
var indent = baseOffsetInLine + indentationResult.Offset;
var indentString = indent.CreateIndentationString(useTabs, tabSize);
return(indentString);
}