在 Roslyn 中获取类之间的依赖关系 [英] Get dependencies between classes in Roslyn

问题描述

我使用 Roslyn 成功获取了项目之间的依赖关系，现在我想获取类之间的依赖关系，类似于 Visual Studio Enterprise 中的代码映射功能.

I am successfully getting dependencies between projects with Roslyn, and now I would like to get dependencies between classes, similar to the Code Map feature in Visual Studio Enterprise.

这是我的代码，?????"部分是我想象我可以得到一些东西的地方.不过，我对 Roslyn API 很陌生，不知道如何从那里开始.

Here is my code, the "?????" part is where I imagine I could get something. I am very new to the Roslyn API, though, and I don't know how to proceed from there on.

        Solution solution = MSBuildWorkspace.Create()
            .OpenSolutionAsync(Path.Combine(repoRootFolder, "MySolution.sln"))
            .Result;

        ProjectDependencyGraph projdeps = solution.GetProjectDependencyGraph();

        Digraph graph = new Digraph();

        foreach (ProjectId projectId in projdeps.GetTopologicallySortedProjects())
        {
            string projName = solution.GetProject(projectId).Name;
            var projDeps = projdeps.GetProjectsThatThisProjectDirectlyDependsOn(projectId);
            foreach (ProjectId depId in projDeps)
            {
                Project dep = solution.GetProject(depId);

                Compilation compilation = dep.GetCompilationAsync().Result;

                foreach (var syntree in compilation.SyntaxTrees)
                {
                    foreach (var classNode in syntree.GetRoot().DescendantNodes().OfType<ClassDeclarationSyntax>())
                    {
                        var classesThisClassNodeReferences = ?????????
                    }
                }

                string depName = dep.Name;

                graph.Dependencies.Add(new Dependency
                {
                    Source = projName,
                    Target = depName
                });
            }
        }

推荐答案

我不确定你的要求，但你可以去检查类的所有后代 SyntaxNode 并得到对应的符号，和它的类型，然后收集这些类型.类似于以下内容:

I'm not sure about your requirements, but you can probably go for checking all descendant SyntaxNodes of the class and get the corresponding symbol, and it's type, and then collect these types. Something like the following:

var semantic = compilation.GetSemanticModel(syntree);
var typesForCurrentClass = classNode.DescendantNodes().Select(n => 
  semantic.GetTypeInfo(n).Type);

请注意，由于部分类的存在，给定的类符号可以有多个 typesForCurrentClass.

Note that there can be multiple typesForCurrentClass for a given class symbol because of partial classes.

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