private bool ApplyDynamicSpacesOperation(AdjustSpacesOperation operation, int pairIndex)
{
var triviaInfo = _tokenStream.GetTriviaData(pairIndex);
if (triviaInfo.SecondTokenIsFirstTokenOnLine)
{
return(false);
}
Contract.ThrowIfFalse(triviaInfo.LineBreaks == 0);
var indentation = _context.GetBaseIndentation(_tokenStream.GetToken(pairIndex + 1));
var previousToken = _tokenStream.GetToken(pairIndex);
bool multipleLines;
int tokenLength;
_tokenStream.GetTokenLength(previousToken, out tokenLength, out multipleLines);
// get end column of previous token
var endColumnOfPreviousToken = multipleLines ? tokenLength : _tokenStream.GetCurrentColumn(previousToken) + tokenLength;
// check whether current position is less than indentation
if (endColumnOfPreviousToken < indentation)
{
_tokenStream.ApplyChange(pairIndex, triviaInfo.WithSpace(indentation - endColumnOfPreviousToken, _context, _formattingRules));
return(true);
}
// delegate to normal single-line space applier
return(ApplySpaceIfSingleLine(operation, pairIndex));
}
public static bool ContainsElasticTrivia(
this SuppressOperation operation,
TokenStream tokenStream
)
{
var startToken = tokenStream.GetTokenData(operation.StartToken);
var nextToken = startToken.GetNextTokenData();
var endToken = tokenStream.GetTokenData(operation.EndToken);
var previousToken = endToken.GetPreviousTokenData();
return(tokenStream.GetTriviaData(startToken, nextToken).TreatAsElastic ||
tokenStream.GetTriviaData(previousToken, endToken).TreatAsElastic);
}
private AnchorData FindAnchorSpanOnSameLineAfterToken(TokenData tokenData)
{
// every token after given token on same line is implicitly dependent to the token.
// check whether one of them is an anchor token.
AnchorData lastBaseAnchorData = null;
while (tokenData.IndexInStream >= 0)
{
AnchorData tempAnchorData;
if (_anchorBaseTokenMap.TryGetValue(tokenData.Token, out tempAnchorData))
{
lastBaseAnchorData = tempAnchorData;
}
// tokenPairIndex is always 0 <= ... < TokenCount - 1
var tokenPairIndex = tokenData.IndexInStream;
if (_tokenStream.TokenCount - 1 <= tokenPairIndex ||
_tokenStream.GetTriviaData(tokenPairIndex).SecondTokenIsFirstTokenOnLine)
{
return(lastBaseAnchorData);
}
tokenData = tokenData.GetNextTokenData();
}
return(lastBaseAnchorData);
}
private void ApplyAnchorOperations(
FormattingContext context,
TokenStream tokenStream,
TokenPairWithOperations[] tokenOperations,
OperationApplier applier,
CancellationToken cancellationToken)
{
using (Logger.LogBlock(FeatureId.Formatting, FunctionId.Formatting_ApplyAnchorOperation, cancellationToken))
{
var tokenPairsToApplyAnchorOperations = this.TaskExecutor.Filter(
tokenOperations,
p => p.LineOperation == null && tokenStream.GetTriviaData(p.PairIndex).SecondTokenIsFirstTokenOnLine,
p => p.PairIndex, cancellationToken);
cancellationToken.ThrowIfCancellationRequested();
// TODO: find out a way to apply anchor operation concurrently if possible
var previousChangesMap = new Dictionary <SyntaxToken, int>();
tokenPairsToApplyAnchorOperations.Do(pairIndex =>
{
cancellationToken.ThrowIfCancellationRequested();
applier.ApplyAnchorIndentation(pairIndex, previousChangesMap, cancellationToken);
});
// go through all relative indent block operation, and see whether it is affected by the anchor operation
context.GetAllRelativeIndentBlockOperations().Do(o =>
{
cancellationToken.ThrowIfCancellationRequested();
applier.ApplyBaseTokenIndentationChangesFromTo(FindCorrectBaseTokenOfRelativeIndentBlockOperation(o, tokenStream), o.StartToken, o.EndToken, previousChangesMap, cancellationToken);
});
}
}
private bool ApplyBaseTokenIndentationChangesFromTo(
TokenData baseToken,
TokenData startToken,
TokenData endToken,
Dictionary <SyntaxToken, int> previousChangesMap,
CancellationToken cancellationToken)
{
// if baseToken is not in the stream, then it is guaranteeded to be not moved.
var tokenWithIndex = baseToken;
if (tokenWithIndex.IndexInStream < 0)
{
return(false);
}
// now, check whether tokens on that the base token depends have been moved.
// any token before the base token on the same line has implicit dependency over the base token.
while (tokenWithIndex.IndexInStream >= 0)
{
// check whether given token have moved
if (previousChangesMap.ContainsKey(tokenWithIndex.Token))
{
break;
}
// okay, this token is not moved, check one before me as long as it is on the same line
var tokenPairIndex = tokenWithIndex.IndexInStream - 1;
if (tokenPairIndex < 0 ||
tokenStream.GetTriviaData(tokenPairIndex).SecondTokenIsFirstTokenOnLine)
{
return(false);
}
tokenWithIndex = tokenWithIndex.GetPreviousTokenData();
}
// didn't find anything moved
if (tokenWithIndex.IndexInStream < 0)
{
return(false);
}
// we are not moved
var indentationDelta = this.context.GetDeltaFromPreviousChangesMap(tokenWithIndex.Token, previousChangesMap);
if (indentationDelta == 0)
{
return(false);
}
startToken = startToken.IndexInStream < 0 ? tokenStream.FirstTokenInStream : startToken;
endToken = endToken.IndexInStream < 0 ? tokenStream.LastTokenInStream : endToken;
ApplyIndentationDeltaFromTo(startToken, endToken, indentationDelta, previousChangesMap, cancellationToken);
return(true);
}
private void ApplyTriviaOperations(FormattingContext context, TokenStream tokenStream, CancellationToken cancellationToken)
{
// trivia formatting result appliers
Action <int, TriviaData> regularApplier = (tokenPairIndex, info) =>
{
tokenStream.ApplyChange(tokenPairIndex, info);
};
// trivia formatting applier
Action <int> triviaFormatter = tokenPairIndex =>
{
var triviaInfo = tokenStream.GetTriviaData(tokenPairIndex);
triviaInfo.Format(context, this.formattingRules, regularApplier, cancellationToken, tokenPairIndex);
};
this.TaskExecutor.For(0, tokenStream.TokenCount - 1, triviaFormatter, cancellationToken);
}
private void ApplyTriviaOperations(FormattingContext context, TokenStream tokenStream, CancellationToken cancellationToken)
{
// trivia formatting result appliers
void regularApplier(int tokenPairIndex, TriviaData info)
{
tokenStream.ApplyChange(tokenPairIndex, info);
}
// trivia formatting applier
void triviaFormatter(int tokenPairIndex)
{
var triviaInfo = tokenStream.GetTriviaData(tokenPairIndex);
triviaInfo.Format(context, _formattingRules, regularApplier, cancellationToken, tokenPairIndex);
}
this.TaskExecutor.For(0, tokenStream.TokenCount - 1, triviaFormatter, cancellationToken);
}
private static void ApplySpaceAndWrappingOperationsBody(
FormattingContext context,
TokenStream tokenStream,
TokenPairWithOperations operation,
OperationApplier applier,
CancellationToken cancellationToken)
{
var token1 = operation.Token1;
var token2 = operation.Token2;
// check whether one of tokens is missing (which means syntax error exist around two tokens)
// in error case, we leave code as user wrote
if (token1.IsMissing || token2.IsMissing)
{
return;
}
var triviaInfo = tokenStream.GetTriviaData(operation.PairIndex);
var spanBetweenTokens = TextSpan.FromBounds(token1.Span.End, token2.SpanStart);
if (operation.LineOperation != null)
{
if (!context.IsWrappingSuppressed(spanBetweenTokens))
{
// TODO : need to revisit later for the case where line and space operations
// are conflicting each other by forcing new lines and removing new lines.
//
// if wrapping operation applied, no need to run any other operation
if (applier.Apply(operation.LineOperation, operation.PairIndex, cancellationToken))
{
return;
}
}
}
if (operation.SpaceOperation != null)
{
if (!context.IsSpacingSuppressed(spanBetweenTokens))
{
applier.Apply(operation.SpaceOperation, operation.PairIndex);
}
}
}
private void ApplyTriviaOperations(FormattingContext context, TokenStream tokenStream, CancellationToken cancellationToken)
{
// trivia formatting result appliers
void regularApplier(int tokenPairIndex, TriviaData info)
{
tokenStream.ApplyChange(tokenPairIndex, info);
}
// trivia formatting applier
void triviaFormatter(int tokenPairIndex)
{
var triviaInfo = tokenStream.GetTriviaData(tokenPairIndex);
triviaInfo.Format(context, _formattingRules, regularApplier, cancellationToken, tokenPairIndex);
}
for (var i = 0; i < tokenStream.TokenCount - 1; i++)
{
cancellationToken.ThrowIfCancellationRequested();
triviaFormatter(i);
}
}