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我正在用Roslyn做一个分析器,将postsharp [NotNull]属性添加到方法参数中。使用Roslyn codefix向方法参数添加一个属性
private async Task<Document> MakeNotNullAsync(Document document, MethodDeclarationSyntax method, CancellationToken cancellationToken, string paramName)
{
var parameters = method.ChildNodes().OfType<ParameterListSyntax>().First();
var param = parameters.ChildNodes().OfType<ParameterSyntax>().First() as SyntaxNode;
NameSyntax name = SyntaxFactory.ParseName("NotNull");
AttributeSyntax attribute = SyntaxFactory.Attribute(name, null);
Collection<AttributeSyntax> list = new Collection<AttributeSyntax>();
list.Add(attribute);
var separatedlist = SyntaxFactory.SeparatedList(list);
var newLiteral = SyntaxFactory.AttributeList(separatedlist);
Collection<SyntaxNode> synlist = new Collection<SyntaxNode>();
synlist.Add(newLiteral);
var root = await document.GetSyntaxRootAsync();
var newRoot = root.InsertNodesBefore(param, synlist);
var newDocument = document.WithSyntaxRoot(newRoot);
return newDocument;
这里是我到目前为止(肯定还有一个更简单的方法来做到这一点),但我得到一个则“”时,它试图做root.InsertNodesBefore()。有一个更好的方法吗?
什么是消息和堆栈跟踪? – SLaks