private static async Task <Document> ConvertLazyInitializationToCompoundAssignmentAsync(
Document document,
BinaryExpressionSyntax coalesceExpression,
CancellationToken cancellationToken)
{
var parenthesizedExpression = (ParenthesizedExpressionSyntax)coalesceExpression.Right;
var simpleAssignment = (AssignmentExpressionSyntax)parenthesizedExpression.Expression;
ExpressionSyntax right = simpleAssignment.Right;
AssignmentExpressionSyntax assignmentExpression = CSharpFactory.CoalesceAssignmentExpression(
coalesceExpression.Left,
Token(coalesceExpression.OperatorToken.LeadingTrivia, SyntaxKind.QuestionQuestionEqualsToken, coalesceExpression.OperatorToken.TrailingTrivia),
right
.WithoutTrivia()
.WithTriviaFrom(right)
.AppendToTrailingTrivia(parenthesizedExpression.GetTrailingTrivia()));
return(await document.ReplaceNodeAsync(coalesceExpression, assignmentExpression, cancellationToken).ConfigureAwait(false));
}