如何使用 Roslyn 确定 XML 文档注释中 cref 的类型?

How can I determine the type of a cref in an XML doc comment with Roslyn?

我有这样的文档评论:

/// <summary>This is an xml doc comment <see cref="MyClass" /></summary>

如何让 Roslyn 为我解析它并给我确定的 MyClass 类型?

你需要找到类型名称对应的CrefSyntax节点,然后你可以使用SemanticModel.GetSymbolInfo()得到你想要的ISymbol

string code = @"namespace Foo
{
    /// <summary>This is an xml doc comment <see cref=""MyClass"" /></summary>
    class MyClass {}
}";

var tree = SyntaxFactory.ParseSyntaxTree(code);

CrefSyntax cref = tree.GetRoot()
    .DescendantNodes(descendIntoTrivia: true)
    .OfType<CrefSyntax>()
    .FirstOrDefault();

var compliation = CSharpCompilation.Create("foo").AddSyntaxTrees(tree);
var model = compliation.GetSemanticModel(tree);

ISymbol symbol = model.GetSymbolInfo(cref).Symbol;