private bool ContainsOnlyWhitespace(Analyzer.AnalysisResult result)
{
if (result.HasComments || result.HasPreprocessor || result.HasSkippedTokens || result.HasSkippedOrDisabledText)
{
return(false);
}
return(true);
}
private int GetSpaceOnSingleLine(Analyzer.AnalysisResult result)
{
if (result.HasTrailingSpace || result.HasUnknownWhitespace || result.LineBreaks > 0 || result.Tab > 0)
{
return(-1);
}
return(result.Space);
}
private bool ContainsOnlyWhitespace(Analyzer.AnalysisResult result)
{
return
(!result.HasComments &&
!result.HasPreprocessor &&
!result.HasSkippedTokens &&
!result.HasSkippedOrDisabledText &&
!result.HasConflictMarker);
}
private ValueTuple <bool, int, int> GetLineBreaksAndIndentation(Analyzer.AnalysisResult result)
{
Debug.Assert(result.Tab >= 0);
Debug.Assert(result.LineBreaks >= 0);
var indentation = result.Tab * this.OptionSet.GetOption(FormattingOptions.TabSize, LanguageNames.CSharp) + result.Space;
if (result.HasTrailingSpace || result.HasUnknownWhitespace)
{
return(ValueTuple.Create(false, result.LineBreaks, indentation));
}
if (!this.OptionSet.GetOption(FormattingOptions.UseTabs, LanguageNames.CSharp))
{
if (result.Tab > 0)
{
return(ValueTuple.Create(false, result.LineBreaks, indentation));
}
return(ValueTuple.Create(true, result.LineBreaks, indentation));
}
Debug.Assert(this.OptionSet.GetOption(FormattingOptions.UseTabs, LanguageNames.CSharp));
// tab can only appear before space to be a valid tab for indentation
if (result.HasTabAfterSpace)
{
return(ValueTuple.Create(false, result.LineBreaks, indentation));
}
if (result.Space >= this.OptionSet.GetOption(FormattingOptions.TabSize, LanguageNames.CSharp))
{
return(ValueTuple.Create(false, result.LineBreaks, indentation));
}
Debug.Assert((indentation / this.OptionSet.GetOption(FormattingOptions.TabSize, LanguageNames.CSharp)) == result.Tab);
Debug.Assert((indentation % this.OptionSet.GetOption(FormattingOptions.TabSize, LanguageNames.CSharp)) == result.Space);
return(ValueTuple.Create(true, result.LineBreaks, indentation));
}
private TriviaData GetWhitespaceOnlyTriviaInfo(SyntaxToken token1, SyntaxToken token2, Analyzer.AnalysisResult result)
{
if (!ContainsOnlyWhitespace(result))
{
return(null);
}
// only whitespace in between
int space = GetSpaceOnSingleLine(result);
Contract.ThrowIfFalse(space >= -1);
if (space >= 0)
{
// check whether we can use cache
return(GetSpaceTriviaData(space, result.TreatAsElastic));
}
// tab is used in a place where it is not an indentation
if (result.LineBreaks == 0 && result.Tab > 0)
{
// calculate actual space size from tab
var spaces = CalculateSpaces(token1, token2);
return(new ModifiedWhitespace(this.OptionSet, result.LineBreaks, indentation: spaces, elastic: result.TreatAsElastic, language: LanguageNames.CSharp));
}
// check whether we can cache trivia info for current indentation
var lineCountAndIndentation = GetLineBreaksAndIndentation(result);
var canUseTriviaAsItIs = lineCountAndIndentation.Item1;
return(GetWhitespaceTriviaData(lineCountAndIndentation.Item2, lineCountAndIndentation.Item3, canUseTriviaAsItIs, result.TreatAsElastic));
}
