Visual Studio扩展获取所有类和接口元数据 [英] Visual Studio Extension get all classes and interfaces metadata

问题描述

我已经成功创建了Visual Studio Extension项目. 它的工作原理很好，也很整洁.我为解决方案做了一些活动.

I have successfully created the Visual Studio Extension project. It works nice and neat. I made some event for solutions.

MSDN和Internet中的手册很简短.我找不到我的问题的答案: 在安装此扩展包的解决方案中，如何检索与类和接口(名称空间，类名称，基本类型等)相关的所有元数据?

The manuals in MSDN and the Internet are brief. And I cannot find an answer to my question: How can I retrieve all metadata related to the class and interfaces (namespaces, class names, base types, etc.) in the solution where this Extension Package is installed?

推荐答案

此代码是关于名称空间的，但是您可以轻松地对其进行转换以从CodeModel中获取所有内容:

This code is about namespace, but you can easily transform it to take everything from CodeModel:

public class Metadata
{

    public List<Namespace> ExtractNamespaces()
    {
        var namespaces = new List<Namespace>();

        var service = (DTE)Package.GetGlobalService(typeof(SDTE));
        var projects = service.Solution.Projects;

        foreach (Project project in projects)
        {
            var projectItems = GetProjectItemsRecursively(project.ProjectItems);
            foreach (ProjectItem item in projectItems.Where(i => i.FileCodeModel != null))
            {
                foreach (CodeElement elem in item.FileCodeModel.CodeElements)
                {
                    namespaces.AddRange(GetNamespacesRecursive(elem).Select(n=>new Namespace(n)));
                }
            }
        }
        return namespaces.Distinct().OrderBy(n=>n.ToString()).ToList();
    }

    private static List<string> GetNamespacesRecursive(CodeElement elem)
    {
        var namespaces = new List<string>();

        if (IsNamespaceable(elem.Kind) && IsEmptyNamespace(elem))
        {
            namespaces.Add(string.Empty);
        }

        if (elem.Kind == vsCMElement.vsCMElementNamespace && !namespaces.Contains(elem.FullName))
        {
            namespaces.Add(elem.FullName);
            if (elem.Children != null)
            {
                foreach (CodeElement codeElement in elem.Children)
                {
                    var ns = GetNamespacesRecursive(codeElement);
                    if (ns.Count > 0)
                        namespaces.AddRange(ns);
                }
            }
        }

        return namespaces;
    }

    private static bool IsEmptyNamespace(CodeElement elem)
    {
        return elem.FullName.IndexOf('.') < 0;
    }

    private static bool IsNamespaceable(vsCMElement kind)
    {
        return (kind == vsCMElement.vsCMElementClass
                || kind == vsCMElement.vsCMElementEnum
                || kind == vsCMElement.vsCMElementInterface
                || kind == vsCMElement.vsCMElementStruct);
    }

    private static List<ProjectItem> GetProjectItemsRecursively(ProjectItems items)
    {
        var ret = new List<EnvDTE.ProjectItem>();
        if (items == null) return ret;
        foreach (ProjectItem item in items)
        {
            ret.Add(item);
            ret.AddRange(GetProjectItemsRecursively(item.ProjectItems));
        }
        return ret;
    }
}

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