private static void Write(
ExpressionSyntax expression,
ExpressionSyntax nextExpression,
SyntaxToken token,
string newText,
SyntaxNodeTextBuilder builder)
{
if (FormatConditionalExpressionAnalyzer.IsFixable(expression, token))
{
if (!expression.GetTrailingTrivia().IsEmptyOrWhitespace() ||
!token.LeadingTrivia.IsEmptyOrWhitespace())
{
builder.AppendTrailingTrivia(expression);
builder.AppendLeadingTrivia(token);
}
builder.AppendTrailingTrivia(token);
builder.AppendLeadingTrivia(nextExpression);
builder.Append(newText);
builder.AppendSpan(nextExpression);
}
else
{
builder.AppendTrailingTrivia(expression);
builder.AppendFullSpan(token);
builder.AppendLeadingTriviaAndSpan(nextExpression);
}
}
private static void Write(
ExpressionSyntax expression,
ExpressionSyntax nextExpression,
SyntaxToken token,
string newText,
SyntaxNodeTextBuilder builder)
{
if (IsFixable(expression, token))
{
if (expression.GetTrailingTrivia().Any(f => !f.IsWhitespaceOrEndOfLineTrivia()) ||
token.LeadingTrivia.Any(f => !f.IsWhitespaceOrEndOfLineTrivia()))
{
builder.AppendTrailingTrivia(expression);
builder.AppendLeadingTrivia(token);
}
builder.AppendTrailingTrivia(token);
builder.AppendLeadingTrivia(nextExpression);
builder.Append(newText);
builder.AppendSpan(nextExpression);
}
else
{
builder.AppendTrailingTrivia(expression);
builder.AppendFullSpan(token);
builder.AppendLeadingTriviaAndSpan(nextExpression);
}
}
public static Task <Document> RefactorAsync(
Document document,
ConditionalExpressionSyntax conditionalExpression,
CancellationToken cancellationToken)
{
ExpressionSyntax condition = conditionalExpression.Condition;
ExpressionSyntax whenTrue = conditionalExpression.WhenTrue;
ExpressionSyntax whenFalse = conditionalExpression.WhenFalse;
SyntaxToken questionToken = conditionalExpression.QuestionToken;
SyntaxToken colonToken = conditionalExpression.ColonToken;
StringBuilder sb = StringBuilderCache.GetInstance();
var builder = new SyntaxNodeTextBuilder(conditionalExpression, sb);
builder.AppendLeadingTrivia();
builder.AppendSpan(condition);
Write(condition, whenTrue, questionToken, "? ", builder);
Write(whenTrue, whenFalse, colonToken, ": ", builder);
builder.AppendTrailingTrivia();
ExpressionSyntax newNode = SyntaxFactory.ParseExpression(StringBuilderCache.GetStringAndFree(sb));
return(document.ReplaceNodeAsync(conditionalExpression, newNode, cancellationToken));
}