public override void Format(
FormattingContext context,
ChainedFormattingRules formattingRules,
Action<int, TriviaData> formattingResultApplier,
CancellationToken cancellationToken,
int tokenPairIndex = TokenPairIndexNotNeeded)
{
Contract.ThrowIfFalse(this.SecondTokenIsFirstTokenOnLine);
var token1 = _original.Token1;
var token2 = _original.Token2;
var triviaList = new TriviaList(token1.TrailingTrivia, token2.LeadingTrivia);
Contract.ThrowIfFalse(triviaList.Count > 0);
// okay, now, check whether we need or are able to format noisy tokens
if (CodeShapeAnalyzer.ContainsSkippedTokensOrText(triviaList))
{
return;
}
formattingResultApplier(tokenPairIndex,
new FormattedComplexTrivia(
context,
formattingRules,
_original.Token1,
_original.Token2,
this.LineBreaks,
this.Spaces,
_original.OriginalString,
cancellationToken));
}
private bool ShouldFormat(FormattingContext context)
{
var commonToken1 = this.Token1;
var commonToken2 = this.Token2;
var triviaList = new TriviaList(commonToken1.TrailingTrivia, commonToken2.LeadingTrivia);
Contract.ThrowIfFalse(triviaList.Count > 0);
// okay, now, check whether we need or are able to format noisy tokens
if (ContainsSkippedTokensOrText(triviaList))
{
return(false);
}
if (!this.SecondTokenIsFirstTokenOnLine)
{
return(CodeShapeAnalyzer.ShouldFormatSingleLine(triviaList));
}
Debug.Assert(this.SecondTokenIsFirstTokenOnLine);
if (this.OptionSet.GetOption(FormattingOptions.UseTabs, LanguageNames.CSharp))
{
return(true);
}
var firstTriviaInTree = this.Token1.CSharpKind() == SyntaxKind.None;
return(CodeShapeAnalyzer.ShouldFormatMultiLine(context, firstTriviaInTree, triviaList));
}
public override void Format(
FormattingContext context,
ChainedFormattingRules formattingRules,
Action <int, TokenStream, TriviaData> formattingResultApplier,
CancellationToken cancellationToken,
int tokenPairIndex = TokenPairIndexNotNeeded)
{
Contract.ThrowIfFalse(this.SecondTokenIsFirstTokenOnLine);
var token1 = _original.Token1;
var token2 = _original.Token2;
var triviaList = new TriviaList(token1.TrailingTrivia, token2.LeadingTrivia);
Contract.ThrowIfFalse(triviaList.Count > 0);
// okay, now, check whether we need or are able to format noisy tokens
if (CodeShapeAnalyzer.ContainsSkippedTokensOrText(triviaList))
{
return;
}
formattingResultApplier(tokenPairIndex,
context.TokenStream,
new FormattedComplexTrivia(
context,
formattingRules,
_original.Token1,
_original.Token2,
this.LineBreaks,
this.Spaces,
_original.OriginalString,
cancellationToken));
}
internal Enumerator(TriviaList triviaList)
{
_list1 = triviaList._list1;
_list2 = triviaList._list2;
_index = -1;
_enumerator = _list1.GetEnumerator();
}
public static bool ShouldFormatMultiLine(
FormattingContext context,
bool firstTriviaInTree,
TriviaList triviaList
)
{
var analyzer = new CodeShapeAnalyzer(context, firstTriviaInTree, triviaList);
return(analyzer.ShouldFormat());
}
private CodeShapeAnalyzer(FormattingContext context, bool firstTriviaInTree, TriviaList triviaList)
{
_context = context;
_options = context.Options;
_triviaList = triviaList;
_indentation = 0;
_hasTrailingSpace = false;
_lastLineBreakIndex = firstTriviaInTree ? 0 : -1;
_touchedNoisyCharacterOnCurrentLine = false;
}
private CodeShapeAnalyzer(FormattingContext context, bool firstTriviaInTree, TriviaList triviaList)
{
this.context = context;
this.optionSet = context.OptionSet;
this.triviaList = triviaList;
this.indentation = 0;
this.hasTrailingSpace = false;
this.lastLineBreakIndex = firstTriviaInTree ? 0 : -1;
this.touchedNoisyCharacterOnCurrentLine = false;
}
public static bool ContainsSkippedTokensOrText(TriviaList list)
{
foreach (var trivia in list)
{
if (trivia.Kind() == SyntaxKind.SkippedTokensTrivia ||
trivia.Kind() == SyntaxKind.PreprocessingMessageTrivia)
{
return(true);
}
}
return(false);
}
public static bool ContainsSkippedTokensOrText(TriviaList list)
{
foreach (var trivia in list)
{
if (trivia.Kind() == SyntaxKind.SkippedTokensTrivia ||
trivia.Kind() == SyntaxKind.PreprocessingMessageTrivia)
{
return true;
}
}
return false;
}
private bool ShouldFormat(FormattingContext context)
{
var commonToken1 = this.Token1;
var commonToken2 = this.Token2;
var formatSpanEnd =
commonToken2.Kind() == SyntaxKind.None
? commonToken1.Span.End
: commonToken2.Span.Start;
var span = TextSpan.FromBounds(commonToken1.Span.End, formatSpanEnd);
if (context.IsSpacingSuppressed(span, TreatAsElastic))
{
return(false);
}
var triviaList = new TriviaList(
commonToken1.TrailingTrivia,
commonToken2.LeadingTrivia
);
Contract.ThrowIfFalse(triviaList.Count > 0);
// okay, now, check whether we need or are able to format noisy tokens
if (ContainsSkippedTokensOrText(triviaList))
{
return(false);
}
if (!this.SecondTokenIsFirstTokenOnLine)
{
return(CodeShapeAnalyzer.ShouldFormatSingleLine(triviaList));
}
Debug.Assert(this.SecondTokenIsFirstTokenOnLine);
if (this.Options.GetOption(FormattingOptions2.UseTabs))
{
return(true);
}
var firstTriviaInTree = this.Token1.Kind() == SyntaxKind.None;
return(CodeShapeAnalyzer.ShouldFormatMultiLine(
context,
firstTriviaInTree,
triviaList
));
}
public static bool ShouldFormatSingleLine(TriviaList list)
{
foreach (var commonTrivia in list)
{
var trivia = (SyntaxTrivia)commonTrivia;
Contract.ThrowIfTrue(trivia.Kind() == SyntaxKind.EndOfLineTrivia);
Contract.ThrowIfTrue(trivia.Kind() == SyntaxKind.SkippedTokensTrivia);
Contract.ThrowIfTrue(trivia.Kind() == SyntaxKind.PreprocessingMessageTrivia);
// if it contains elastic trivia, always format
if (trivia.IsElastic())
{
return true;
}
if (trivia.Kind() == SyntaxKind.WhitespaceTrivia)
{
Debug.Assert(trivia.ToString() == trivia.ToFullString());
var text = trivia.ToString();
if (text.IndexOf('\t') >= 0)
{
return true;
}
}
// we don't touch space between two tokens on a single line that contains
// multiline comments between them
if (trivia.IsRegularOrDocComment())
{
return false;
}
if (trivia.Kind() == SyntaxKind.RegionDirectiveTrivia ||
trivia.Kind() == SyntaxKind.EndRegionDirectiveTrivia ||
SyntaxFacts.IsPreprocessorDirective(trivia.Kind()))
{
return false;
}
}
return true;
}
public static bool ShouldFormatSingleLine(TriviaList list)
{
foreach (var commonTrivia in list)
{
var trivia = (SyntaxTrivia)commonTrivia;
Contract.ThrowIfTrue(trivia.CSharpKind() == SyntaxKind.EndOfLineTrivia);
Contract.ThrowIfTrue(trivia.CSharpKind() == SyntaxKind.SkippedTokensTrivia);
Contract.ThrowIfTrue(trivia.CSharpKind() == SyntaxKind.PreprocessingMessageTrivia);
// if it contains elastic trivia, always format
if (trivia.IsElastic())
{
return(true);
}
if (trivia.CSharpKind() == SyntaxKind.WhitespaceTrivia)
{
Debug.Assert(trivia.ToString() == trivia.ToFullString());
var text = trivia.ToString();
if (text.IndexOf('\t') >= 0)
{
return(true);
}
}
// we don't touch space between two tokens on a single line that contains
// multiline comments between them
if (trivia.IsRegularOrDocComment())
{
return(false);
}
if (trivia.CSharpKind() == SyntaxKind.RegionDirectiveTrivia ||
trivia.CSharpKind() == SyntaxKind.EndRegionDirectiveTrivia ||
SyntaxFacts.IsPreprocessorDirective(trivia.CSharpKind()))
{
return(false);
}
}
return(true);
}
private bool ShouldFormat(FormattingContext context)
{
var commonToken1 = this.Token1;
var commonToken2 = this.Token2;
var formatSpanEnd = commonToken2.Kind() == SyntaxKind.None ? commonToken1.Span.End : commonToken2.Span.Start;
var span = TextSpan.FromBounds(commonToken1.Span.End, formatSpanEnd);
if (context.IsSpacingSuppressed(span))
{
return false;
}
var triviaList = new TriviaList(commonToken1.TrailingTrivia, commonToken2.LeadingTrivia);
Contract.ThrowIfFalse(triviaList.Count > 0);
// okay, now, check whether we need or are able to format noisy tokens
if (ContainsSkippedTokensOrText(triviaList))
{
return false;
}
if (!this.SecondTokenIsFirstTokenOnLine)
{
return CodeShapeAnalyzer.ShouldFormatSingleLine(triviaList);
}
Debug.Assert(this.SecondTokenIsFirstTokenOnLine);
if (this.OptionSet.GetOption(FormattingOptions.UseTabs, LanguageNames.CSharp))
{
return true;
}
var firstTriviaInTree = this.Token1.Kind() == SyntaxKind.None;
return CodeShapeAnalyzer.ShouldFormatMultiLine(context, firstTriviaInTree, triviaList);
}
public override TriviaData WithIndentation(
int indentation, FormattingContext context, ChainedFormattingRules formattingRules, CancellationToken cancellationToken)
{
// if tokens are not in different line, there is nothing we can do here
if (!this.SecondTokenIsFirstTokenOnLine)
{
return this;
}
// well, we are already in a desired format, nothing to do. return as it is.
if (this.Spaces == indentation)
{
return this;
}
// do expansive check
// we need to actually format here to find out indentation
var list = new TriviaList(_token1.TrailingTrivia, _token2.LeadingTrivia);
Contract.ThrowIfFalse(list.Count > 0);
if (ContainsSkippedTokensOrText(list))
{
// we can't format
return this;
}
// okay, we need to do expansive calculation to find out actual space between two tokens
var trivia = Format(context, formattingRules, this.LineBreaks, indentation, cancellationToken);
var triviaString = CreateString(trivia, cancellationToken);
int lineBreaks;
int spaces;
ExtractLineAndSpace(triviaString, out lineBreaks, out spaces);
return CreateComplexTrivia(lineBreaks, spaces, indentation);
}
private CodeShapeAnalyzer(FormattingContext context, bool firstTriviaInTree, TriviaList triviaList)
{
_context = context;
_optionSet = context.OptionSet;
_triviaList = triviaList;
_indentation = 0;
_hasTrailingSpace = false;
_lastLineBreakIndex = firstTriviaInTree ? 0 : -1;
_touchedNoisyCharacterOnCurrentLine = false;
}
public static bool ShouldFormatMultiLine(FormattingContext context, bool firstTriviaInTree, TriviaList triviaList)
{
var analyzer = new CodeShapeAnalyzer(context, firstTriviaInTree, triviaList);
return analyzer.ShouldFormat();
}
declaration = declaration.ReplaceToken(previousToken, previousToken.WithTrailingTrivia(TriviaList(ElasticSpace)));
protected override bool ContainsSkippedTokensOrText(TriviaList list)
{
return CodeShapeAnalyzer.ContainsSkippedTokensOrText(list);
}
protected override bool ContainsSkippedTokensOrText(TriviaList list)
{
return(CodeShapeAnalyzer.ContainsSkippedTokensOrText(list));
}
protected abstract bool ContainsSkippedTokensOrText(TriviaList list);
