protected IndentationResult GetIndentationOfLine(TextLine lineToMatch, int addedSpaces)
{
var firstNonWhitespace = lineToMatch.GetFirstNonWhitespacePosition();
firstNonWhitespace = firstNonWhitespace ?? lineToMatch.End;
return GetIndentationOfPosition(firstNonWhitespace.Value, addedSpaces);
}
public static bool ShouldUseSmartTokenFormatterInsteadOfIndenter(
IEnumerable<AbstractFormattingRule> formattingRules,
CompilationUnitSyntax root,
TextLine line,
IOptionService optionService,
OptionSet optionSet,
out SyntaxToken token)
{
Contract.ThrowIfNull(formattingRules);
Contract.ThrowIfNull(root);
token = default;
if (!optionSet.GetOption(FormattingOptions.AutoFormattingOnReturn, LanguageNames.CSharp))
{
return false;
}
if (optionSet.GetOption(FormattingOptions.SmartIndent, LanguageNames.CSharp) != FormattingOptions.IndentStyle.Smart)
{
return false;
}
var firstNonWhitespacePosition = line.GetFirstNonWhitespacePosition();
if (!firstNonWhitespacePosition.HasValue)
{
return false;
}
token = root.FindToken(firstNonWhitespacePosition.Value);
if (IsInvalidToken(token))
{
return false;
}
if (token.IsKind(SyntaxKind.None) ||
token.SpanStart != firstNonWhitespacePosition)
{
return false;
}
// first see whether there is a line operation for current token
var previousToken = token.GetPreviousToken(includeZeroWidth: true);
// only use smart token formatter when we have two visible tokens.
if (previousToken.Kind() == SyntaxKind.None || previousToken.IsMissing)
{
return false;
}
var lineOperation = FormattingOperations.GetAdjustNewLinesOperation(formattingRules, previousToken, token, optionSet.AsAnalyzerConfigOptions(optionService, LanguageNames.CSharp));
if (lineOperation == null || lineOperation.Option == AdjustNewLinesOption.ForceLinesIfOnSingleLine)
{
// no indentation operation, nothing to do for smart token formatter
return false;
}
// We're pressing enter between two tokens, have the formatter figure out hte appropriate
// indentation.
return true;
}
protected IndentationResult GetIndentationOfLine(TextLine lineToMatch, int addedSpaces)
{
var firstNonWhitespace = lineToMatch.GetFirstNonWhitespacePosition();
firstNonWhitespace = firstNonWhitespace ?? lineToMatch.End;
return(GetIndentationOfPosition(firstNonWhitespace.Value, addedSpaces));
}
public static bool ShouldUseSmartTokenFormatterInsteadOfIndenter(
IEnumerable<IFormattingRule> formattingRules,
CompilationUnitSyntax root,
TextLine line,
OptionSet optionSet,
CancellationToken cancellationToken)
{
Contract.ThrowIfNull(formattingRules);
Contract.ThrowIfNull(root);
if (!optionSet.GetOption(FeatureOnOffOptions.AutoFormattingOnReturn, LanguageNames.CSharp))
{
return false;
}
if (optionSet.GetOption(FormattingOptions.SmartIndent, LanguageNames.CSharp) != FormattingOptions.IndentStyle.Smart)
{
return false;
}
var firstNonWhitespacePosition = line.GetFirstNonWhitespacePosition();
if (!firstNonWhitespacePosition.HasValue)
{
return false;
}
var token = root.FindToken(firstNonWhitespacePosition.Value);
if (token.IsKind(SyntaxKind.None) ||
token.SpanStart != firstNonWhitespacePosition)
{
return false;
}
// first see whether there is a line operation for current token
var previousToken = token.GetPreviousToken(includeZeroWidth: true);
// only use smart token formatter when we have two visible tokens.
if (previousToken.Kind() == SyntaxKind.None || previousToken.IsMissing)
{
return false;
}
var lineOperation = FormattingOperations.GetAdjustNewLinesOperation(formattingRules, previousToken, token, optionSet);
if (lineOperation == null || lineOperation.Option == AdjustNewLinesOption.ForceLinesIfOnSingleLine)
{
// no indentation operation, nothing to do for smart token formatter
return false;
}
// We're pressing enter between two tokens, have the formatter figure out hte appropriate
// indentation.
return true;
}
public static bool ShouldUseSmartTokenFormatterInsteadOfIndenter(
IEnumerable <IFormattingRule> formattingRules,
CompilationUnitSyntax root,
TextLine line,
OptionSet optionSet,
CancellationToken cancellationToken)
{
Contract.ThrowIfNull(formattingRules);
Contract.ThrowIfNull(root);
if (optionSet.GetOption(FormattingOptions.SmartIndent, LanguageNames.CSharp) != FormattingOptions.IndentStyle.Smart)
{
return(false);
}
var firstNonWhitespacePosition = line.GetFirstNonWhitespacePosition();
if (!firstNonWhitespacePosition.HasValue)
{
return(false);
}
var token = root.FindToken(firstNonWhitespacePosition.Value);
if (token.IsKind(SyntaxKind.None) ||
token.SpanStart != firstNonWhitespacePosition)
{
return(false);
}
// first see whether there is a line operation for current token
var previousToken = token.GetPreviousToken(includeZeroWidth: true);
// only use smart token formatter when we have two visible tokens.
if (previousToken.Kind() == SyntaxKind.None || previousToken.IsMissing)
{
return(false);
}
var lineOperation = FormattingOperations.GetAdjustNewLinesOperation(formattingRules, previousToken, token, optionSet);
if (lineOperation != null && lineOperation.Option != AdjustNewLinesOption.ForceLinesIfOnSingleLine)
{
return(true);
}
// no indentation operation, nothing to do for smart token formatter
return(false);
}
protected override IndentationResult?GetDesiredIndentationWorker(
SyntaxToken token, TextLine previousLine, int lastNonWhitespacePosition)
{
// okay, now check whether the text we found is trivia or actual token.
if (token.Span.Contains(lastNonWhitespacePosition))
{
// okay, it is a token case, do special work based on type of last token on previous line
return(GetIndentationBasedOnToken(token));
}
else
{
// there must be trivia that contains or touch this position
Contract.Assert(token.FullSpan.Contains(lastNonWhitespacePosition));
// okay, now check whether the trivia is at the beginning of the line
var firstNonWhitespacePosition = previousLine.GetFirstNonWhitespacePosition();
if (!firstNonWhitespacePosition.HasValue)
{
return(IndentFromStartOfLine(0));
}
var trivia = Tree.GetRoot(CancellationToken).FindTrivia(firstNonWhitespacePosition.Value, findInsideTrivia: true);
if (trivia.Kind() == SyntaxKind.None || this.LineToBeIndented.LineNumber > previousLine.LineNumber + 1)
{
// If the token belongs to the next statement and is also the first token of the statement, then it means the user wants
// to start type a new statement. So get indentation from the start of the line but not based on the token.
// Case:
// static void Main(string[] args)
// {
// // A
// // B
//
// $$
// return;
// }
var containingStatement = token.GetAncestor <StatementSyntax>();
if (containingStatement != null && containingStatement.GetFirstToken() == token)
{
var position = GetCurrentPositionNotBelongToEndOfFileToken(LineToBeIndented.Start);
return(IndentFromStartOfLine(Finder.GetIndentationOfCurrentPosition(Tree, token, position, CancellationToken)));
}
// If the token previous of the base token happens to be a Comma from a separation list then we need to handle it different
// Case:
// var s = new List<string>
// {
// """",
// """",/*sdfsdfsdfsdf*/
// // dfsdfsdfsdfsdf
//
// $$
// };
var previousToken = token.GetPreviousToken();
if (previousToken.IsKind(SyntaxKind.CommaToken))
{
return(GetIndentationFromCommaSeparatedList(previousToken));
}
else if (!previousToken.IsKind(SyntaxKind.None))
{
// okay, beginning of the line is not trivia, use the last token on the line as base token
return(GetIndentationBasedOnToken(token));
}
}
// this case we will keep the indentation of this trivia line
// this trivia can't be preprocessor by the way.
return(GetIndentationOfLine(previousLine));
}
}