private static UsingDirectiveSyntax ConsolidateUsingDirective(UsingDirectiveSyntax usingDirective)
{
var leadingTrivia = usingDirective.GetLeadingTrivia()
.Where(trivia => !trivia.IsKind(SyntaxKind.EndOfLineTrivia))
.ToList();
return(usingDirective.WithLeadingTrivia(new SyntaxTriviaList(leadingTrivia)));
}
private UsingDirectiveSyntax WithLeadingNewlineCount(UsingDirectiveSyntax node, int newlineCount)
{
// Count current leading newlines
int currentNewlineCount = 0;
foreach (SyntaxTrivia trivia in node.GetLeadingTrivia())
{
if (trivia.Kind() == SyntaxKind.EndOfLineTrivia)
{
currentNewlineCount++;
}
break;
}
if (currentNewlineCount == newlineCount)
{
// If count is already correct, leave alone
return(node);
}
else if (currentNewlineCount > newlineCount)
{
// If too many, exclude the excess ones
return(node.WithLeadingTrivia(node.GetLeadingTrivia().Skip(currentNewlineCount - newlineCount)));
}
else
{
// If too few, insert new leading ones
SyntaxTriviaList newLeadingTrivia = node.GetLeadingTrivia();
for (int i = currentNewlineCount; i < newlineCount; ++i)
{
newLeadingTrivia = newLeadingTrivia.Insert(0, SyntaxFactory.CarriageReturnLineFeed);
}
return(node.WithLeadingTrivia(newLeadingTrivia));
}
}
private static UsingDirectiveSyntax RemoveLeadingAndTrailingCompilerDirectives(UsingDirectiveSyntax usingSyntax)
{
UsingDirectiveSyntax usingDirectiveToUse = usingSyntax;
if (usingDirectiveToUse.HasLeadingTrivia)
{
if (usingDirectiveToUse.HasLeadingTrivia)
{
var newLeadingTrivia = RemoveCompilerDirectives(usingDirectiveToUse.GetLeadingTrivia());
usingDirectiveToUse = usingDirectiveToUse.WithLeadingTrivia(newLeadingTrivia);
}
if (usingDirectiveToUse.HasTrailingTrivia)
{
var newTrailingTrivia = RemoveCompilerDirectives(usingDirectiveToUse.GetTrailingTrivia());
usingDirectiveToUse = usingDirectiveToUse.WithTrailingTrivia(newTrailingTrivia);
}
}
return(usingDirectiveToUse);
}
private static Task <Document> AddBlankLineBeforeUsingDirectiveAsync(
Document document,
UsingDirectiveSyntax usingDirective,
CancellationToken cancellationToken)
{
SyntaxTriviaList leadingTrivia = usingDirective.GetLeadingTrivia();
int index = leadingTrivia.Count;
if (index > 0 &&
leadingTrivia.Last().IsWhitespaceTrivia())
{
index--;
}
SyntaxTriviaList newLeadingTrivia = leadingTrivia.Insert(index, SyntaxTriviaAnalysis.DetermineEndOfLine(usingDirective));
UsingDirectiveSyntax newUsingDirective = usingDirective.WithLeadingTrivia(newLeadingTrivia);
return(document.ReplaceNodeAsync(usingDirective, newUsingDirective, cancellationToken));
}
private static NamespaceDeclarationSyntax AddUsing(NamespaceDeclarationSyntax nspaceSyntax, UsingDirectiveSyntax newUsing)
{
if (nspaceSyntax.Usings.Count > 0)
{
var lastUsing = nspaceSyntax.Usings.Last();
newUsing = newUsing
.WithLeadingTrivia(lastUsing.GetLeadingTrivia())
.WithTrailingTrivia(lastUsing.GetTrailingTrivia());
return nspaceSyntax.WithUsings(nspaceSyntax.Usings.Add(newUsing));
}
return nspaceSyntax.WithUsings(nspaceSyntax.Usings.Add(newUsing.NormalizeWhitespace()));
}