private static GreenNode CreateNode(SyntaxTrivia[] trivias)
{
if (trivias == null)
{
return(null);
}
var builder = new SyntaxTriviaListBuilder(trivias.Length);
builder.Add(trivias);
return(builder.ToList().Node);
}
/// <summary>
/// Creates a new <see cref="SyntaxTriviaList"/> with the specified trivia inserted at the index.
/// </summary>
/// <param name="index">The index in the list to insert the trivia at.</param>
/// <param name="trivia">The trivia to insert.</param>
public SyntaxTriviaList InsertRange(int index, IEnumerable <SyntaxTrivia> trivia)
{
int thisCount = this.Count;
if (index < 0 || index > thisCount)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
if (trivia == null)
{
throw new ArgumentNullException(nameof(trivia));
}
// Just return ourselves if we're not being asked to add anything.
ICollection <SyntaxTrivia> triviaCollection = trivia as ICollection <SyntaxTrivia>;
if (triviaCollection != null && triviaCollection.Count == 0)
{
return(this);
}
SyntaxTriviaListBuilder builder = GetBuilder();
try
{
for (int i = 0; i < index; i++)
{
builder.Add(this[i]);
}
builder.AddRange(trivia);
for (int i = index; i < thisCount; i++)
{
builder.Add(this[i]);
}
return(builder.Count == thisCount ? this : builder.ToList());
}
finally
{
ClearAndFreeBuilder(builder);
}
}
public override SyntaxToken VisitToken(SyntaxToken token)
{
SyntaxToken result = token;
// only bother visiting trivia if we are removing a node in structured trivia
if (this.VisitIntoStructuredTrivia)
{
result = base.VisitToken(token);
}
// the next token gets the accrued trivia.
if (result.GetKind() != SyntaxKind.None && _residualTrivia != null && _residualTrivia.Count > 0)
{
_residualTrivia.Add(result.LeadingTrivia);
result = result.WithLeadingTrivia(_residualTrivia.ToList());
_residualTrivia.Clear();
}
return(result);
}
