public override SyntaxNode VisitYieldStatement(YieldStatementSyntax node)
{
SyntaxToken keyword = node.ReturnOrBreakKeyword;
ExpressionSyntax expression = node.Expression;
SyntaxKind kind = node.Kind();
if (kind == SyntaxKind.YieldReturnStatement)
{
ParenthesizedExpressionSyntax parenthesizedExpression = expression
.Parenthesize(moveTrivia: true)
.WithSimplifierAnnotation();
CastExpressionSyntax castExpression = CastExpression(
_typeSymbol.ToMinimalTypeSyntax(_semanticModel, node.SpanStart),
parenthesizedExpression);
InvocationExpressionSyntax invocationExpression = SimpleMemberInvocationExpression(
_identifierName,
_addName,
Argument(castExpression.WithSimplifierAnnotation()));
return(ExpressionStatement(invocationExpression.WithoutTrivia())
.WithTriviaFrom(node)
.AppendToLeadingTrivia(node.DescendantTrivia(TextSpan.FromBounds(keyword.Span.End, expression.Span.Start))));
}
else if (kind == SyntaxKind.YieldBreakStatement)
{
return(ReturnStatement(
Token(keyword.LeadingTrivia, SyntaxKind.ReturnKeyword, keyword.TrailingTrivia),
_identifierName,
node.SemicolonToken));
}
Debug.Fail(node.Kind().ToString());
return(base.VisitYieldStatement(node));
}