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Fireasy3 揭秘 -- 使用 SourceGeneraor 改进服务发现

雷達

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　　在 Fireasy3 揭秘 -- 依赖注入与服务发现 这篇中，我们通过遍列程序集中的所有类，来查找三个类型的服务接口，这样应用在启动时会消耗一定的时间来处理这些事情。今天，我们将用 ISourceGenerator 来对它进行改进。
　　ISourceGenerator 是 Microsoft.CodeAnalysis.Analyzers 中的一项技术，它是基于代码分析的原理，在语法树中查找所需要的内容，通过这些内容再构造一段源代码，使得我们在编译程序集的时候，把这些代码一并编译进去。使用它的好处在于，它是在编译时生成的，而不像 Emit 或其他反射等方法来构建的动态代码一样，在运行时将耗费一定的性能。
　　需要新建一个 .net standard 2.0 的项目，并引入 Microsoft.CodeAnalysis.Analyzers 和 Microsoft.CodeAnalysis.CSharp，见 Fireasy.Common.Analyzers。
　　在项目里添加一个类，实现 ISourceGenerator 接口，如下：
  1.     [Generator]
  2.     public class ServiceDiscoverGenerator : ISourceGenerator
  3.     {
  4. <Project Sdk="Microsoft.NET.Sdk">
  5.   <ItemGroup>
  6.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  7.   </ItemGroup>
  8. </Project>void ISourceGenerator.Initialize(GeneratorInitializationContext context)
  9. <Project Sdk="Microsoft.NET.Sdk">
  10.   <ItemGroup>
  11.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  12.   </ItemGroup>
  13. </Project>{
  14. <Project Sdk="Microsoft.NET.Sdk">
  15.   <ItemGroup>
  16.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  17.   </ItemGroup>
  18. </Project>    Debugger.Launch();
  19. <Project Sdk="Microsoft.NET.Sdk">
  20.   <ItemGroup>
  21.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  22.   </ItemGroup>
  23. </Project>    context.RegisterForSyntaxNotifications(() => new ServiceDiscoverSyntaxReceiver());
  24. <Project Sdk="Microsoft.NET.Sdk">
  25.   <ItemGroup>
  26.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  27.   </ItemGroup>
  28. </Project>}
  30. <Project Sdk="Microsoft.NET.Sdk">
  31.   <ItemGroup>
  32.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  33.   </ItemGroup>
  34. </Project>void ISourceGenerator.Execute(GeneratorExecutionContext context)
  35. <Project Sdk="Microsoft.NET.Sdk">
  36.   <ItemGroup>
  37.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  38.   </ItemGroup>
  39. </Project>{
  40. <Project Sdk="Microsoft.NET.Sdk">
  41.   <ItemGroup>
  42.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  43.   </ItemGroup>
  44. </Project>}
  45.     }
复制代码
　　Initialize 方法用于初始化生成器，使用 RegisterForSyntaxNotifications 方法向上下文注入一个语法接收器，以便用来分析语法树。这里的语法接收器有两种，分别是 ISyntaxReceiver 和 ISyntaxContextReceiver，后者可以从上下文中获取到 SemanticModel 对象，这样的话能够从语法节点中获取到定义的符号模型。使用符号模型相对于语法节点来说要更方便一些。下面是基于 ISyntaxContextReceiver 接口的语法接收器。
  1.     internal class ServiceDiscoverSyntaxReceiver : ISyntaxContextReceiver
  2.     {
  3. <Project Sdk="Microsoft.NET.Sdk">
  4.   <ItemGroup>
  5.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  6.   </ItemGroup>
  7. </Project>private const string SingletonServiceName = "Fireasy.Common.DependencyInjection.ISingletonService";
  8. <Project Sdk="Microsoft.NET.Sdk">
  9.   <ItemGroup>
  10.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  11.   </ItemGroup>
  12. </Project>private const string TransientServiceName = "Fireasy.Common.DependencyInjection.ITransientService";
  13. <Project Sdk="Microsoft.NET.Sdk">
  14.   <ItemGroup>
  15.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  16.   </ItemGroup>
  17. </Project>private const string ScopedServiceName = "Fireasy.Common.DependencyInjection.IScopedService";
  18. <Project Sdk="Microsoft.NET.Sdk">
  19.   <ItemGroup>
  20.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  21.   </ItemGroup>
  22. </Project>private const string RegisterAttributeName = "Fireasy.Common.DependencyInjection.ServiceRegisterAttribute";
  24. <Project Sdk="Microsoft.NET.Sdk">
  25.   <ItemGroup>
  26.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  27.   </ItemGroup>
  28. </Project>private List<ClassMetadata> _metadatas = new();
  30. <Project Sdk="Microsoft.NET.Sdk">
  31.   <ItemGroup>
  32.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  33.   </ItemGroup>
  34. </Project>void ISyntaxContextReceiver.OnVisitSyntaxNode(GeneratorSyntaxContext context)
  35. <Project Sdk="Microsoft.NET.Sdk">
  36.   <ItemGroup>
  37.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  38.   </ItemGroup>
  39. </Project>{
  40. <Project Sdk="Microsoft.NET.Sdk">
  41.   <ItemGroup>
  42.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  43.   </ItemGroup>
  44. </Project>    if (context.Node is ClassDeclarationSyntax classSyntax)
  45. <Project Sdk="Microsoft.NET.Sdk">
  46.   <ItemGroup>
  47.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  48.   </ItemGroup>
  49. </Project>    {
  50. <Project Sdk="Microsoft.NET.Sdk">
  51.   <ItemGroup>
  52.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  53.   </ItemGroup>
  54. </Project><Project Sdk="Microsoft.NET.Sdk">
  55.   <ItemGroup>
  56.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  57.   </ItemGroup>
  58. </Project>AnalyseClassSyntax(context.SemanticModel, classSyntax);
  59. <Project Sdk="Microsoft.NET.Sdk">
  60.   <ItemGroup>
  61.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  62.   </ItemGroup>
  63. </Project>    }
  64. <Project Sdk="Microsoft.NET.Sdk">
  65.   <ItemGroup>
  66.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  67.   </ItemGroup>
  68. </Project>}
  69.     }
复制代码
　　OnVisitSyntaxNode 方法正如 lambda 表达式树的 ExpressionVisitor 一样，语法树中的每一个节点都会被它访问到。我们需要分析的是类，因此只需要处理 ClassDeclarationSyntax 语法即可。AnalyseClassSyntax 方法如下：
  1. <Project Sdk="Microsoft.NET.Sdk">
  2.   <ItemGroup>
  3.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  4.   </ItemGroup>
  5. </Project>/// <summary>
  6. <Project Sdk="Microsoft.NET.Sdk">
  7.   <ItemGroup>
  8.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  9.   </ItemGroup>
  10. </Project>/// 分析类型语法。
  11. <Project Sdk="Microsoft.NET.Sdk">
  12.   <ItemGroup>
  13.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  14.   </ItemGroup>
  15. </Project>/// </summary>
  16. <Project Sdk="Microsoft.NET.Sdk">
  17.   <ItemGroup>
  18.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  19.   </ItemGroup>
  20. </Project>/// <param name="model"></param>
  21. <Project Sdk="Microsoft.NET.Sdk">
  22.   <ItemGroup>
  23.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  24.   </ItemGroup>
  25. </Project>/// <param name="syntax"></param>
  26. <Project Sdk="Microsoft.NET.Sdk">
  27.   <ItemGroup>
  28.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  29.   </ItemGroup>
  30. </Project>private void AnalyseClassSyntax(SemanticModel model, ClassDeclarationSyntax syntax)
  31. <Project Sdk="Microsoft.NET.Sdk">
  32.   <ItemGroup>
  33.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  34.   </ItemGroup>
  35. </Project>{
  36. <Project Sdk="Microsoft.NET.Sdk">
  37.   <ItemGroup>
  38.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  39.   </ItemGroup>
  40. </Project>    var typeSymbol = (ITypeSymbol)model.GetDeclaredSymbol(syntax)!;
  42. <Project Sdk="Microsoft.NET.Sdk">
  43.   <ItemGroup>
  44.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  45.   </ItemGroup>
  46. </Project>    var interfaces = typeSymbol.Interfaces;
  48. <Project Sdk="Microsoft.NET.Sdk">
  49.   <ItemGroup>
  50.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  51.   </ItemGroup>
  52. </Project>    //判断是否使用了 特殊
  53. <Project Sdk="Microsoft.NET.Sdk">
  54.   <ItemGroup>
  55.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  56.   </ItemGroup>
  57. </Project>    var regAttr = typeSymbol.GetAttributes().FirstOrDefault(s => s.AttributeClass!.ToDisplayString() == RegisterAttributeName);
  59. <Project Sdk="Microsoft.NET.Sdk">
  60.   <ItemGroup>
  61.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  62.   </ItemGroup>
  63. </Project>    var lifetime = string.Empty;
  64. <Project Sdk="Microsoft.NET.Sdk">
  65.   <ItemGroup>
  66.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  67.   </ItemGroup>
  68. </Project>    if (regAttr != null)
  69. <Project Sdk="Microsoft.NET.Sdk">
  70.   <ItemGroup>
  71.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  72.   </ItemGroup>
  73. </Project>    {
  74. <Project Sdk="Microsoft.NET.Sdk">
  75.   <ItemGroup>
  76.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  77.   </ItemGroup>
  78. </Project><Project Sdk="Microsoft.NET.Sdk">
  79.   <ItemGroup>
  80.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  81.   </ItemGroup>
  82. </Project>lifetime = GetLifetime((int)regAttr.ConstructorArguments[0].Value!);
  83. <Project Sdk="Microsoft.NET.Sdk">
  84.   <ItemGroup>
  85.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  86.   </ItemGroup>
  87. </Project>    }
  88. <Project Sdk="Microsoft.NET.Sdk">
  89.   <ItemGroup>
  90.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  91.   </ItemGroup>
  92. </Project>    else if (interfaces.Any(s => s.ToDisplayString() == SingletonServiceName))
  93. <Project Sdk="Microsoft.NET.Sdk">
  94.   <ItemGroup>
  95.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  96.   </ItemGroup>
  97. </Project>    {
  98. <Project Sdk="Microsoft.NET.Sdk">
  99.   <ItemGroup>
  100.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  101.   </ItemGroup>
  102. </Project><Project Sdk="Microsoft.NET.Sdk">
  103.   <ItemGroup>
  104.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  105.   </ItemGroup>
  106. </Project>lifetime = "Singleton";
  107. <Project Sdk="Microsoft.NET.Sdk">
  108.   <ItemGroup>
  109.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  110.   </ItemGroup>
  111. </Project>    }
  112. <Project Sdk="Microsoft.NET.Sdk">
  113.   <ItemGroup>
  114.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  115.   </ItemGroup>
  116. </Project>    else if (interfaces.Any(s => s.ToDisplayString() == TransientServiceName))
  117. <Project Sdk="Microsoft.NET.Sdk">
  118.   <ItemGroup>
  119.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  120.   </ItemGroup>
  121. </Project>    {
  122. <Project Sdk="Microsoft.NET.Sdk">
  123.   <ItemGroup>
  124.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  125.   </ItemGroup>
  126. </Project><Project Sdk="Microsoft.NET.Sdk">
  127.   <ItemGroup>
  128.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  129.   </ItemGroup>
  130. </Project>lifetime = "Transient";
  131. <Project Sdk="Microsoft.NET.Sdk">
  132.   <ItemGroup>
  133.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  134.   </ItemGroup>
  135. </Project>    }
  136. <Project Sdk="Microsoft.NET.Sdk">
  137.   <ItemGroup>
  138.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  139.   </ItemGroup>
  140. </Project>    else if (interfaces.Any(s => s.ToDisplayString() == ScopedServiceName))
  141. <Project Sdk="Microsoft.NET.Sdk">
  142.   <ItemGroup>
  143.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  144.   </ItemGroup>
  145. </Project>    {
  146. <Project Sdk="Microsoft.NET.Sdk">
  147.   <ItemGroup>
  148.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  149.   </ItemGroup>
  150. </Project><Project Sdk="Microsoft.NET.Sdk">
  151.   <ItemGroup>
  152.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  153.   </ItemGroup>
  154. </Project>lifetime = "Scoped";
  155. <Project Sdk="Microsoft.NET.Sdk">
  156.   <ItemGroup>
  157.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  158.   </ItemGroup>
  159. </Project>    }
  161. <Project Sdk="Microsoft.NET.Sdk">
  162.   <ItemGroup>
  163.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  164.   </ItemGroup>
  165. </Project>    if (!string.IsNullOrEmpty(lifetime))
  166. <Project Sdk="Microsoft.NET.Sdk">
  167.   <ItemGroup>
  168.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  169.   </ItemGroup>
  170. </Project>    {
  171. <Project Sdk="Microsoft.NET.Sdk">
  172.   <ItemGroup>
  173.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  174.   </ItemGroup>
  175. </Project><Project Sdk="Microsoft.NET.Sdk">
  176.   <ItemGroup>
  177.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  178.   </ItemGroup>
  179. </Project>var serviceTypes = GetServiceTypes(interfaces).ToList();
  181. <Project Sdk="Microsoft.NET.Sdk">
  182.   <ItemGroup>
  183.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  184.   </ItemGroup>
  185. </Project><Project Sdk="Microsoft.NET.Sdk">
  186.   <ItemGroup>
  187.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  188.   </ItemGroup>
  189. </Project>//如果没有实现任何接口，则判断基类是不是抽象类，如果不是，则注册自己
  190. <Project Sdk="Microsoft.NET.Sdk">
  191.   <ItemGroup>
  192.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  193.   </ItemGroup>
  194. </Project><Project Sdk="Microsoft.NET.Sdk">
  195.   <ItemGroup>
  196.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  197.   </ItemGroup>
  198. </Project>if (serviceTypes.Count == 0 && (typeSymbol.BaseType?.Name == "Object" || typeSymbol.BaseType?.IsAbstract == false))
  199. <Project Sdk="Microsoft.NET.Sdk">
  200.   <ItemGroup>
  201.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  202.   </ItemGroup>
  203. </Project><Project Sdk="Microsoft.NET.Sdk">
  204.   <ItemGroup>
  205.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  206.   </ItemGroup>
  207. </Project>{
  208. <Project Sdk="Microsoft.NET.Sdk">
  209.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  210.     <ItemGroup>
  211. <Project Sdk="Microsoft.NET.Sdk">
  212.   <ItemGroup>
  213.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  214.   </ItemGroup>
  215. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  216.     </ItemGroup>
  217.   </Target>
  218. </Project>serviceTypes.Add(typeSymbol);
  219. <Project Sdk="Microsoft.NET.Sdk">
  220.   <ItemGroup>
  221.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  222.   </ItemGroup>
  223. </Project><Project Sdk="Microsoft.NET.Sdk">
  224.   <ItemGroup>
  225.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  226.   </ItemGroup>
  227. </Project>}
  229. <Project Sdk="Microsoft.NET.Sdk">
  230.   <ItemGroup>
  231.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  232.   </ItemGroup>
  233. </Project><Project Sdk="Microsoft.NET.Sdk">
  234.   <ItemGroup>
  235.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  236.   </ItemGroup>
  237. </Project>_metadatas.Add(new ClassMetadata(typeSymbol, lifetime).AddServiceTypes(serviceTypes));
  238. <Project Sdk="Microsoft.NET.Sdk">
  239.   <ItemGroup>
  240.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  241.   </ItemGroup>
  242. </Project>    }
  243. <Project Sdk="Microsoft.NET.Sdk">
  244.   <ItemGroup>
  245.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  246.   </ItemGroup>
  247. </Project>}
  249. <Project Sdk="Microsoft.NET.Sdk">
  250.   <ItemGroup>
  251.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  252.   </ItemGroup>
  253. </Project>/// <summary>
  254. <Project Sdk="Microsoft.NET.Sdk">
  255.   <ItemGroup>
  256.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  257.   </ItemGroup>
  258. </Project>/// 获取生命周期。
  259. <Project Sdk="Microsoft.NET.Sdk">
  260.   <ItemGroup>
  261.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  262.   </ItemGroup>
  263. </Project>/// </summary>
  264. <Project Sdk="Microsoft.NET.Sdk">
  265.   <ItemGroup>
  266.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  267.   </ItemGroup>
  268. </Project>/// <param name="value"></param>
  269. <Project Sdk="Microsoft.NET.Sdk">
  270.   <ItemGroup>
  271.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  272.   </ItemGroup>
  273. </Project>/// <returns></returns>
  274. <Project Sdk="Microsoft.NET.Sdk">
  275.   <ItemGroup>
  276.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  277.   </ItemGroup>
  278. </Project>private string GetLifetime(int value) => value switch
  279. <Project Sdk="Microsoft.NET.Sdk">
  280.   <ItemGroup>
  281.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  282.   </ItemGroup>
  283. </Project>{
  284. <Project Sdk="Microsoft.NET.Sdk">
  285.   <ItemGroup>
  286.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  287.   </ItemGroup>
  288. </Project>    0 => "Singleton",
  289. <Project Sdk="Microsoft.NET.Sdk">
  290.   <ItemGroup>
  291.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  292.   </ItemGroup>
  293. </Project>    1 => "Scoped",
  294. <Project Sdk="Microsoft.NET.Sdk">
  295.   <ItemGroup>
  296.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  297.   </ItemGroup>
  298. </Project>    2 => "Transient",
  299. <Project Sdk="Microsoft.NET.Sdk">
  300.   <ItemGroup>
  301.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  302.   </ItemGroup>
  303. </Project>    _ => string.Empty
  304. <Project Sdk="Microsoft.NET.Sdk">
  305.   <ItemGroup>
  306.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  307.   </ItemGroup>
  308. </Project>};
  310. <Project Sdk="Microsoft.NET.Sdk">
  311.   <ItemGroup>
  312.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  313.   </ItemGroup>
  314. </Project>/// <summary>
  315. <Project Sdk="Microsoft.NET.Sdk">
  316.   <ItemGroup>
  317.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  318.   </ItemGroup>
  319. </Project>/// 从接口中筛选出服务类。
  320. <Project Sdk="Microsoft.NET.Sdk">
  321.   <ItemGroup>
  322.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  323.   </ItemGroup>
  324. </Project>/// </summary>
  325. <Project Sdk="Microsoft.NET.Sdk">
  326.   <ItemGroup>
  327.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  328.   </ItemGroup>
  329. </Project>/// <param name="types"></param>
  330. <Project Sdk="Microsoft.NET.Sdk">
  331.   <ItemGroup>
  332.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  333.   </ItemGroup>
  334. </Project>/// <returns></returns>
  335. <Project Sdk="Microsoft.NET.Sdk">
  336.   <ItemGroup>
  337.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  338.   </ItemGroup>
  339. </Project>private IEnumerable<ITypeSymbol> GetServiceTypes(IEnumerable<INamedTypeSymbol> types)
  340. <Project Sdk="Microsoft.NET.Sdk">
  341.   <ItemGroup>
  342.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  343.   </ItemGroup>
  344. </Project>{
  345. <Project Sdk="Microsoft.NET.Sdk">
  346.   <ItemGroup>
  347.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  348.   </ItemGroup>
  349. </Project>    foreach (var type in types)
  350. <Project Sdk="Microsoft.NET.Sdk">
  351.   <ItemGroup>
  352.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  353.   </ItemGroup>
  354. </Project>    {
  355. <Project Sdk="Microsoft.NET.Sdk">
  356.   <ItemGroup>
  357.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  358.   </ItemGroup>
  359. </Project><Project Sdk="Microsoft.NET.Sdk">
  360.   <ItemGroup>
  361.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  362.   </ItemGroup>
  363. </Project>if (type.ToDisplayString() == SingletonServiceName ||
  364. <Project Sdk="Microsoft.NET.Sdk">
  365.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  366.     <ItemGroup>
  367. <Project Sdk="Microsoft.NET.Sdk">
  368.   <ItemGroup>
  369.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  370.   </ItemGroup>
  371. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  372.     </ItemGroup>
  373.   </Target>
  374. </Project>type.ToDisplayString() == TransientServiceName ||
  375. <Project Sdk="Microsoft.NET.Sdk">
  376.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  377.     <ItemGroup>
  378. <Project Sdk="Microsoft.NET.Sdk">
  379.   <ItemGroup>
  380.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  381.   </ItemGroup>
  382. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  383.     </ItemGroup>
  384.   </Target>
  385. </Project>type.ToDisplayString() == ScopedServiceName)
  386. <Project Sdk="Microsoft.NET.Sdk">
  387.   <ItemGroup>
  388.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  389.   </ItemGroup>
  390. </Project><Project Sdk="Microsoft.NET.Sdk">
  391.   <ItemGroup>
  392.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  393.   </ItemGroup>
  394. </Project>{
  395. <Project Sdk="Microsoft.NET.Sdk">
  396.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  397.     <ItemGroup>
  398. <Project Sdk="Microsoft.NET.Sdk">
  399.   <ItemGroup>
  400.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  401.   </ItemGroup>
  402. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  403.     </ItemGroup>
  404.   </Target>
  405. </Project>continue;
  406. <Project Sdk="Microsoft.NET.Sdk">
  407.   <ItemGroup>
  408.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  409.   </ItemGroup>
  410. </Project><Project Sdk="Microsoft.NET.Sdk">
  411.   <ItemGroup>
  412.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  413.   </ItemGroup>
  414. </Project>}
  416. <Project Sdk="Microsoft.NET.Sdk">
  417.   <ItemGroup>
  418.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  419.   </ItemGroup>
  420. </Project><Project Sdk="Microsoft.NET.Sdk">
  421.   <ItemGroup>
  422.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  423.   </ItemGroup>
  424. </Project>yield return type;
  425. <Project Sdk="Microsoft.NET.Sdk">
  426.   <ItemGroup>
  427.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  428.   </ItemGroup>
  429. </Project>    }
  430. <Project Sdk="Microsoft.NET.Sdk">
  431.   <ItemGroup>
  432.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  433.   </ItemGroup>
  434. </Project>}
复制代码
　　至此，我们就得到了一份可注册的元数据，它由一个实现类对应多个服务类。ClassMetadata 的定义如下：
  1.     /// <summary>
  2.     /// 类的元数据。
  3.     /// </summary>
  4.     public class ClassMetadata
  5.     {
  6. <Project Sdk="Microsoft.NET.Sdk">
  7.   <ItemGroup>
  8.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  9.   </ItemGroup>
  10. </Project>/// <summary>
  11. <Project Sdk="Microsoft.NET.Sdk">
  12.   <ItemGroup>
  13.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  14.   </ItemGroup>
  15. </Project>/// 初始化 <see cref="ClassMetadata"/> 类的新实例。
  16. <Project Sdk="Microsoft.NET.Sdk">
  17.   <ItemGroup>
  18.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  19.   </ItemGroup>
  20. </Project>/// </summary>
  21. <Project Sdk="Microsoft.NET.Sdk">
  22.   <ItemGroup>
  23.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  24.   </ItemGroup>
  25. </Project>/// <param name="implementationType">实现类的类型。</param>
  26. <Project Sdk="Microsoft.NET.Sdk">
  27.   <ItemGroup>
  28.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  29.   </ItemGroup>
  30. </Project>/// <param name="lifetime">生命周期。</param>
  31. <Project Sdk="Microsoft.NET.Sdk">
  32.   <ItemGroup>
  33.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  34.   </ItemGroup>
  35. </Project>public ClassMetadata(ITypeSymbol implementationType, string lifetime)
  36. <Project Sdk="Microsoft.NET.Sdk">
  37.   <ItemGroup>
  38.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  39.   </ItemGroup>
  40. </Project>{
  41. <Project Sdk="Microsoft.NET.Sdk">
  42.   <ItemGroup>
  43.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  44.   </ItemGroup>
  45. </Project>    ImplementationType = implementationType;
  46. <Project Sdk="Microsoft.NET.Sdk">
  47.   <ItemGroup>
  48.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  49.   </ItemGroup>
  50. </Project>    Lifetime = lifetime;
  51. <Project Sdk="Microsoft.NET.Sdk">
  52.   <ItemGroup>
  53.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  54.   </ItemGroup>
  55. </Project>}
  57. <Project Sdk="Microsoft.NET.Sdk">
  58.   <ItemGroup>
  59.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  60.   </ItemGroup>
  61. </Project>/// <summary>
  62. <Project Sdk="Microsoft.NET.Sdk">
  63.   <ItemGroup>
  64.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  65.   </ItemGroup>
  66. </Project>/// 获取实现类的类型。
  67. <Project Sdk="Microsoft.NET.Sdk">
  68.   <ItemGroup>
  69.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  70.   </ItemGroup>
  71. </Project>/// </summary>
  72. <Project Sdk="Microsoft.NET.Sdk">
  73.   <ItemGroup>
  74.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  75.   </ItemGroup>
  76. </Project>public ITypeSymbol ImplementationType { get; }
  78. <Project Sdk="Microsoft.NET.Sdk">
  79.   <ItemGroup>
  80.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  81.   </ItemGroup>
  82. </Project>/// <summary>
  83. <Project Sdk="Microsoft.NET.Sdk">
  84.   <ItemGroup>
  85.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  86.   </ItemGroup>
  87. </Project>/// 获取服务类的类型列表。
  88. <Project Sdk="Microsoft.NET.Sdk">
  89.   <ItemGroup>
  90.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  91.   </ItemGroup>
  92. </Project>/// </summary>
  93. <Project Sdk="Microsoft.NET.Sdk">
  94.   <ItemGroup>
  95.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  96.   </ItemGroup>
  97. </Project>public List<ITypeSymbol> ServiceTypes { get; } = new();
  99. <Project Sdk="Microsoft.NET.Sdk">
  100.   <ItemGroup>
  101.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  102.   </ItemGroup>
  103. </Project>/// <summary>
  104. <Project Sdk="Microsoft.NET.Sdk">
  105.   <ItemGroup>
  106.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  107.   </ItemGroup>
  108. </Project>/// 获取生命周期。
  109. <Project Sdk="Microsoft.NET.Sdk">
  110.   <ItemGroup>
  111.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  112.   </ItemGroup>
  113. </Project>/// </summary>
  114. <Project Sdk="Microsoft.NET.Sdk">
  115.   <ItemGroup>
  116.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  117.   </ItemGroup>
  118. </Project>public string Lifetime { get; }
  120. <Project Sdk="Microsoft.NET.Sdk">
  121.   <ItemGroup>
  122.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  123.   </ItemGroup>
  124. </Project>/// <summary>
  125. <Project Sdk="Microsoft.NET.Sdk">
  126.   <ItemGroup>
  127.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  128.   </ItemGroup>
  129. </Project>/// 添加服务类型。
  130. <Project Sdk="Microsoft.NET.Sdk">
  131.   <ItemGroup>
  132.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  133.   </ItemGroup>
  134. </Project>/// </summary>
  135. <Project Sdk="Microsoft.NET.Sdk">
  136.   <ItemGroup>
  137.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  138.   </ItemGroup>
  139. </Project>/// <param name="serviceTypes">服务类型列表。</param>
  140. <Project Sdk="Microsoft.NET.Sdk">
  141.   <ItemGroup>
  142.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  143.   </ItemGroup>
  144. </Project>/// <returns></returns>
  145. <Project Sdk="Microsoft.NET.Sdk">
  146.   <ItemGroup>
  147.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  148.   </ItemGroup>
  149. </Project>public ClassMetadata AddServiceTypes(IEnumerable<ITypeSymbol> serviceTypes)
  150. <Project Sdk="Microsoft.NET.Sdk">
  151.   <ItemGroup>
  152.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  153.   </ItemGroup>
  154. </Project>{
  155. <Project Sdk="Microsoft.NET.Sdk">
  156.   <ItemGroup>
  157.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  158.   </ItemGroup>
  159. </Project>    ServiceTypes.AddRange(serviceTypes);
  161. <Project Sdk="Microsoft.NET.Sdk">
  162.   <ItemGroup>
  163.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  164.   </ItemGroup>
  165. </Project>    return this;
  166. <Project Sdk="Microsoft.NET.Sdk">
  167.   <ItemGroup>
  168.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  169.   </ItemGroup>
  170. </Project>}
  171.     }
复制代码
　　好了，得到这一份元数据后，我们转到 ServiceDiscoverGenerator，看看下一步它要做什么。
  1.     [Generator]
  2.     public class ServiceDiscoverGenerator : ISourceGenerator
  3.     {
  4. <Project Sdk="Microsoft.NET.Sdk">
  5.   <ItemGroup>
  6.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  7.   </ItemGroup>
  8. </Project>void ISourceGenerator.Initialize(GeneratorInitializationContext context)
  9. <Project Sdk="Microsoft.NET.Sdk">
  10.   <ItemGroup>
  11.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  12.   </ItemGroup>
  13. </Project>{
  14. <Project Sdk="Microsoft.NET.Sdk">
  15.   <ItemGroup>
  16.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  17.   </ItemGroup>
  18. </Project>    Debugger.Launch();
  19. <Project Sdk="Microsoft.NET.Sdk">
  20.   <ItemGroup>
  21.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  22.   </ItemGroup>
  23. </Project>    context.RegisterForSyntaxNotifications(() => new ServiceDiscoverSyntaxReceiver());
  24. <Project Sdk="Microsoft.NET.Sdk">
  25.   <ItemGroup>
  26.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  27.   </ItemGroup>
  28. </Project>}
  30. <Project Sdk="Microsoft.NET.Sdk">
  31.   <ItemGroup>
  32.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  33.   </ItemGroup>
  34. </Project>void ISourceGenerator.Execute(GeneratorExecutionContext context)
  35. <Project Sdk="Microsoft.NET.Sdk">
  36.   <ItemGroup>
  37.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  38.   </ItemGroup>
  39. </Project>{
  40. <Project Sdk="Microsoft.NET.Sdk">
  41.   <ItemGroup>
  42.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  43.   </ItemGroup>
  44. </Project>    if (context.SyntaxContextReceiver is ServiceDiscoverSyntaxReceiver receiver)
  45. <Project Sdk="Microsoft.NET.Sdk">
  46.   <ItemGroup>
  47.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  48.   </ItemGroup>
  49. </Project>    {
  50. <Project Sdk="Microsoft.NET.Sdk">
  51.   <ItemGroup>
  52.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  53.   </ItemGroup>
  54. </Project><Project Sdk="Microsoft.NET.Sdk">
  55.   <ItemGroup>
  56.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  57.   </ItemGroup>
  58. </Project>var metadatas = receiver.GetMetadatas();
  60. <Project Sdk="Microsoft.NET.Sdk">
  61.   <ItemGroup>
  62.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  63.   </ItemGroup>
  64. </Project><Project Sdk="Microsoft.NET.Sdk">
  65.   <ItemGroup>
  66.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  67.   </ItemGroup>
  68. </Project>if (metadatas.Count > 0)
  69. <Project Sdk="Microsoft.NET.Sdk">
  70.   <ItemGroup>
  71.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  72.   </ItemGroup>
  73. </Project><Project Sdk="Microsoft.NET.Sdk">
  74.   <ItemGroup>
  75.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  76.   </ItemGroup>
  77. </Project>{
  78. <Project Sdk="Microsoft.NET.Sdk">
  79.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  80.     <ItemGroup>
  81. <Project Sdk="Microsoft.NET.Sdk">
  82.   <ItemGroup>
  83.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  84.   </ItemGroup>
  85. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  86.     </ItemGroup>
  87.   </Target>
  88. </Project>context.AddSource("ServicesDiscover.cs", BuildDiscoverSourceCode(metadatas));
  89. <Project Sdk="Microsoft.NET.Sdk">
  90.   <ItemGroup>
  91.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  92.   </ItemGroup>
  93. </Project><Project Sdk="Microsoft.NET.Sdk">
  94.   <ItemGroup>
  95.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  96.   </ItemGroup>
  97. </Project>}
  98. <Project Sdk="Microsoft.NET.Sdk">
  99.   <ItemGroup>
  100.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  101.   </ItemGroup>
  102. </Project>    }
  103. <Project Sdk="Microsoft.NET.Sdk">
  104.   <ItemGroup>
  105.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  106.   </ItemGroup>
  107. </Project>}
  108.     }
复制代码
　　在 Execute 方法中，拿到接收器分析出来的元数据，通过 BuildDiscoverSourceCode 方法去生成一段源代码。它是一个服务部署类，在 Configure 方法中，会把所有的服务描述添加到 IServiceCollection 容器内，如下：
  1. <Project Sdk="Microsoft.NET.Sdk">
  2.   <ItemGroup>
  3.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  4.   </ItemGroup>
  5. </Project>private SourceText BuildDiscoverSourceCode(List<ClassMetadata> metadatas)
  6. <Project Sdk="Microsoft.NET.Sdk">
  7.   <ItemGroup>
  8.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  9.   </ItemGroup>
  10. </Project>{
  11. <Project Sdk="Microsoft.NET.Sdk">
  12.   <ItemGroup>
  13.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  14.   </ItemGroup>
  15. </Project>    var sb = new StringBuilder();
  16. <Project Sdk="Microsoft.NET.Sdk">
  17.   <ItemGroup>
  18.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  19.   </ItemGroup>
  20. </Project>    sb.AppendLine(@"
  21. using Fireasy.Common.DependencyInjection;
  22. using Fireasy.Common.DynamicProxy;
  23. using Microsoft.Extensions.DependencyInjection;
  25. [assembly: Fireasy.Common.DependencyInjection.ServicesDeployAttribute(typeof(__ServiceDiscoverNs.__ServiceDiscoverServicesDeployer), Priority = 1)]
  27. namespace __ServiceDiscoverNs
  28. {
  29.     internal class __ServiceDiscoverServicesDeployer: IServicesDeployer
  30.     {
  31. <Project Sdk="Microsoft.NET.Sdk">
  32.   <ItemGroup>
  33.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  34.   </ItemGroup>
  35. </Project>void IServicesDeployer.Configure(IServiceCollection services)
  36. <Project Sdk="Microsoft.NET.Sdk">
  37.   <ItemGroup>
  38.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  39.   </ItemGroup>
  40. </Project>{");
  42. <Project Sdk="Microsoft.NET.Sdk">
  43.   <ItemGroup>
  44.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  45.   </ItemGroup>
  46. </Project>    foreach (var metadata in metadatas)
  47. <Project Sdk="Microsoft.NET.Sdk">
  48.   <ItemGroup>
  49.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  50.   </ItemGroup>
  51. </Project>    {
  52. <Project Sdk="Microsoft.NET.Sdk">
  53.   <ItemGroup>
  54.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  55.   </ItemGroup>
  56. </Project><Project Sdk="Microsoft.NET.Sdk">
  57.   <ItemGroup>
  58.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  59.   </ItemGroup>
  60. </Project>foreach (var svrType in metadata.ServiceTypes)
  61. <Project Sdk="Microsoft.NET.Sdk">
  62.   <ItemGroup>
  63.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  64.   </ItemGroup>
  65. </Project><Project Sdk="Microsoft.NET.Sdk">
  66.   <ItemGroup>
  67.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  68.   </ItemGroup>
  69. </Project>{
  70. <Project Sdk="Microsoft.NET.Sdk">
  71.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  72.     <ItemGroup>
  73. <Project Sdk="Microsoft.NET.Sdk">
  74.   <ItemGroup>
  75.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  76.   </ItemGroup>
  77. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  78.     </ItemGroup>
  79.   </Target>
  80. </Project>sb.AppendLine($"<Project Sdk="Microsoft.NET.Sdk">
  81.   <ItemGroup>
  82.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  83.   </ItemGroup>
  84. </Project>    services.Add{metadata.Lifetime}(typeof({GetTypeName(svrType)}), typeof({GetTypeName(metadata.ImplementationType)}));");
  85. <Project Sdk="Microsoft.NET.Sdk">
  86.   <ItemGroup>
  87.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  88.   </ItemGroup>
  89. </Project><Project Sdk="Microsoft.NET.Sdk">
  90.   <ItemGroup>
  91.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  92.   </ItemGroup>
  93. </Project>}
  94. <Project Sdk="Microsoft.NET.Sdk">
  95.   <ItemGroup>
  96.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  97.   </ItemGroup>
  98. </Project>    }
  99. <Project Sdk="Microsoft.NET.Sdk">
  100.   <ItemGroup>
  101.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  102.   </ItemGroup>
  103. </Project>    sb.AppendLine(@"
  104. <Project Sdk="Microsoft.NET.Sdk">
  105.   <ItemGroup>
  106.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  107.   </ItemGroup>
  108. </Project>}
  109.     }
  110. }");
  111. <Project Sdk="Microsoft.NET.Sdk">
  112.   <ItemGroup>
  113.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  114.   </ItemGroup>
  115. </Project>    return SourceText.From(sb.ToString(), Encoding.UTF8);
  116. <Project Sdk="Microsoft.NET.Sdk">
  117.   <ItemGroup>
  118.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  119.   </ItemGroup>
  120. </Project>}
  122. <Project Sdk="Microsoft.NET.Sdk">
  123.   <ItemGroup>
  124.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  125.   </ItemGroup>
  126. </Project>private string GetTypeName(ITypeSymbol symbol)
  127. <Project Sdk="Microsoft.NET.Sdk">
  128.   <ItemGroup>
  129.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  130.   </ItemGroup>
  131. </Project>{
  132. <Project Sdk="Microsoft.NET.Sdk">
  133.   <ItemGroup>
  134.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  135.   </ItemGroup>
  136. </Project>    if (symbol is INamedTypeSymbol namedTypeSymbol)
  137. <Project Sdk="Microsoft.NET.Sdk">
  138.   <ItemGroup>
  139.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  140.   </ItemGroup>
  141. </Project>    {
  142. <Project Sdk="Microsoft.NET.Sdk">
  143.   <ItemGroup>
  144.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  145.   </ItemGroup>
  146. </Project><Project Sdk="Microsoft.NET.Sdk">
  147.   <ItemGroup>
  148.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  149.   </ItemGroup>
  150. </Project>//如果是泛型，要处理成 Any<> 或 Any<,> 这样的描述
  151. <Project Sdk="Microsoft.NET.Sdk">
  152.   <ItemGroup>
  153.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  154.   </ItemGroup>
  155. </Project><Project Sdk="Microsoft.NET.Sdk">
  156.   <ItemGroup>
  157.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  158.   </ItemGroup>
  159. </Project>if (namedTypeSymbol.IsGenericType)
  160. <Project Sdk="Microsoft.NET.Sdk">
  161.   <ItemGroup>
  162.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  163.   </ItemGroup>
  164. </Project><Project Sdk="Microsoft.NET.Sdk">
  165.   <ItemGroup>
  166.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  167.   </ItemGroup>
  168. </Project>{
  169. <Project Sdk="Microsoft.NET.Sdk">
  170.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  171.     <ItemGroup>
  172. <Project Sdk="Microsoft.NET.Sdk">
  173.   <ItemGroup>
  174.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  175.   </ItemGroup>
  176. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  177.     </ItemGroup>
  178.   </Target>
  179. </Project>var t = namedTypeSymbol.ToDisplayString();
  180. <Project Sdk="Microsoft.NET.Sdk">
  181.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  182.     <ItemGroup>
  183. <Project Sdk="Microsoft.NET.Sdk">
  184.   <ItemGroup>
  185.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  186.   </ItemGroup>
  187. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  188.     </ItemGroup>
  189.   </Target>
  190. </Project>return t.Substring(0, t.IndexOf("<") + 1) + new string(',', namedTypeSymbol.TypeArguments.Length - 1) + ">";
  191. <Project Sdk="Microsoft.NET.Sdk">
  192.   <ItemGroup>
  193.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  194.   </ItemGroup>
  195. </Project><Project Sdk="Microsoft.NET.Sdk">
  196.   <ItemGroup>
  197.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  198.   </ItemGroup>
  199. </Project>}
  200. <Project Sdk="Microsoft.NET.Sdk">
  201.   <ItemGroup>
  202.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  203.   </ItemGroup>
  204. </Project>    }
  206. <Project Sdk="Microsoft.NET.Sdk">
  207.   <ItemGroup>
  208.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  209.   </ItemGroup>
  210. </Project>    return symbol.ToDisplayString();
  211. <Project Sdk="Microsoft.NET.Sdk">
  212.   <ItemGroup>
  213.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  214.   </ItemGroup>
  215. </Project>}
复制代码
　　到这里，源代码生成器就算是完成了，那接下来怎么让它工作呢？
　　首先，我们需要找到一个“宿主”，我之所以这么称呼，是因为 nuget 打包时，需要将分析器依附到一个包内，因此我选择 Fireasy.Common，在 Fireasy.Common 的项目文件中，加下以下一段代码，它的目的是当 Fireasy.Common 打包时，Fireasy.Common.Analyzers.dll 会自动打包到 analyzers 目录下，引用 Fireasy.Common 包时，会自动使用该分析器来生成代码。如下：
  1. <Project Sdk="Microsoft.NET.Sdk">
  2.   <Target Name="_IncludeAllDependencies" BeforeTargets="_GetPackageFiles">
  3.     <ItemGroup>
  4. <Project Sdk="Microsoft.NET.Sdk">
  5.   <ItemGroup>
  6.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  7.   </ItemGroup>
  8. </Project><None Include="..\Fireasy.Common.Analyzers\bin\$(Configuration)\**\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />
  9.     </ItemGroup>
  10.   </Target>
  11. </Project>
复制代码
　　我们测试的时候，因为是直接引用的项目，因此需要引用包含分析器的项目，而且要加上 OutputItemType 和 ReferenceOutputAssembly，如下：
  1. <Project Sdk="Microsoft.NET.Sdk">
  2.   <ItemGroup>
  3.     <ProjectReference Include="..\..\libraries\Fireasy.Common.Analyzers\Fireasy.Common.Analyzers.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
  4.   </ItemGroup>
  5. </Project>
复制代码
　　好了，编译测试项目，使用 ILSpy 反编译 dll 文件，你会发现，实现了 ISingletonService、ITransientService 或 IScopedService 的类自动注册进来了：
  1. // __ServiceDiscoverNs.__ServiceDiscoverServicesDeployer
  2. using Fireasy.Common.DependencyInjection;
  3. using Fireasy.Common.Tests;
  4. using Microsoft.Extensions.DependencyInjection;
  6. void IServicesDeployer.Configure(IServiceCollection services)
  7. {
  8.         services.AddSingleton(typeof(DependencyInjectionTests.ITestSingletonService), typeof(DependencyInjectionTests.TestSingletonServiceImpl));
  9.         services.AddTransient(typeof(DependencyInjectionTests.ITestTransientService), typeof(DependencyInjectionTests.TestTransientServiceImpl));
  10.         services.AddScoped(typeof(DependencyInjectionTests.ITestScopedService), typeof(DependencyInjectionTests.TestScopedServiceImpl));
  11.         services.AddTransient(typeof(DependencyInjectionTests.ITestWithRegisterAttr), typeof(DependencyInjectionTests.TestWithRegisterAttrImpl));
  12.         services.AddTransient(typeof(DependencyInjectionTests.TestWithRegisterAttrNonIntefaceImpl), typeof(DependencyInjectionTests.TestWithRegisterAttrNonIntefaceImpl));
  13.         services.AddTransient(typeof(DependencyInjectionTests.IGenericService<, >), typeof(DependencyInjectionTests.GenericService<, >));
  14.         services.AddTransient(typeof(DependencyInjectionTests.TestDynamicProxyClass), typeof(DependencyInjectionTests.TestDynamicProxyClass));
  15.         services.AddTransient(typeof(ObjectActivatorTests.ITestService), typeof(ObjectActivatorTests.TestService));
  16. }
复制代码
　　另外还有一个小窍门，在测试项目的“依赖项”--“分析器”下，你会看到一个属于自己的分析器，依次展开，也会找到所生成的那个代码文件。

　　最后，奉上 Fireasy 3 的开源地址：https://gitee.com/faib920/fireasy3 ，欢迎大家前来捧场。
　　本文相关代码请参考：
　　https://gitee.com/faib920/fireasy3/src/libraries/Fireasy.Common.Analyzers/ServiceDiscover
　　https://gitee.com/faib920/fireasy3/tests/Fireasy.Common.Tests/DependencyInjectionTests.cs
　　更多内容请移步官网 http://www.fireasy.cn 。

来源:https://www.cnblogs.com/fireasy/archive/2023/03/03/17174121.html
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发表于 2023-3-2 23:37:02

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