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);
ExtractLineAndSpace(triviaString, out var lineBreaks, out var spaces);
return(CreateComplexTrivia(lineBreaks, spaces, indentation));
}
internal Enumerator(TriviaList triviaList)
{
_list1 = triviaList._list1;
_list2 = triviaList._list2;
_index = -1;
_enumerator = _list1.GetEnumerator();
}
private LineColumn FormatTrivia <T>(Formatter <T> formatter, WhitespaceAppender <T> whitespaceAdder, List <T> changes, CancellationToken cancellationToken)
{
var lineColumn = this.InitialLineColumn;
var existingWhitespaceDelta = LineColumnDelta.Default;
var previousWhitespaceTrivia = default(SyntaxTrivia);
var previousTrivia = default(SyntaxTrivia);
var implicitLineBreak = false;
var list = new TriviaList(this.Token1.TrailingTrivia, this.Token2.LeadingTrivia);
foreach (var trivia in list)
{
if (trivia.RawKind == 0)
{
continue;
}
if (IsWhitespaceOrEndOfLine(trivia))
{
if (IsEndOfLine(trivia))
{
implicitLineBreak = false;
}
existingWhitespaceDelta = existingWhitespaceDelta.With(
GetLineColumnOfWhitespace(
lineColumn,
previousTrivia,
previousWhitespaceTrivia,
existingWhitespaceDelta,
trivia));
previousWhitespaceTrivia = trivia;
continue;
}
previousWhitespaceTrivia = default;
lineColumn = FormatFirstTriviaAndWhitespaceAfter(
lineColumn,
previousTrivia, existingWhitespaceDelta, trivia,
formatter, whitespaceAdder,
changes, implicitLineBreak, cancellationToken);
implicitLineBreak = implicitLineBreak || ContainsImplicitLineBreak(trivia);
existingWhitespaceDelta = LineColumnDelta.Default;
previousTrivia = trivia;
}
lineColumn = FormatFirstTriviaAndWhitespaceAfter(
lineColumn,
previousTrivia, existingWhitespaceDelta, default,
public List <SyntaxTrivia> FormatToSyntaxTrivia(CancellationToken cancellationToken)
{
var changes = ListPool <SyntaxTrivia> .Allocate();
var lineColumn = FormatTrivia(Format, AddWhitespaceTrivia, changes, cancellationToken);
// deal with edges
// insert empty linebreaks at the beginning of trivia list
AddExtraLines(lineColumn.Line, changes);
if (Succeeded())
{
var temp = new List <SyntaxTrivia>(changes);
ListPool <SyntaxTrivia> .Free(changes);
return(temp);
}
ListPool <SyntaxTrivia> .Free(changes);
var triviaList = new TriviaList(this.Token1.TrailingTrivia, this.Token2.LeadingTrivia);
return(new List <SyntaxTrivia>(triviaList));
}
protected abstract bool ContainsSkippedTokensOrText(TriviaList list);
