0

在此处输入图像描述

我想得到由var.

var localDeclaration = methodDeclaration.DescendantNodes().OfType<LocalDeclarationStatementSyntax>().First();
var identifierName = localDeclaration.DescendantNodes().OfType<IdentifierNameSyntax>().First();
var symbolInfo = semanticModel.GetSymbolInfo(identifierName);
var typeSymbol = semanticModel.GetTypeInfo(identifierName).Type;

我试过了GetSymbolInfo()，GetTypeInfo()第一个返回null，第二个返回{?}。

使用 Roslyn 获取“var”类型 它提供的方法也不起作用。下图附上调试信息。可以看到这些值都是 null 或者 {?}。 在此处输入图像描述

我的代码看起来像这样

public class Start
{

    static void Main(string[] args)
    {
        InitEnvironment();
        Run();
        Console.ReadLine();
    }

    private static void InitEnvironment()
    {
        GlobalVariable.MySolution = MSBuildWorkspace.Create().OpenSolutionAsync(ConstVariable.SolutionPath).Result;
        GlobalVariable.MyProject = GlobalVariable.MySolution.Projects.First(x => x.Name == "GamePlay");
        GlobalVariable.CompilationByAll = GlobalVariable.MyProject.GetCompilationAsync().Result;
    }

    private static void Run()
    {
        var tree = SyntaxTreeProcessor.GetSyntaxTreeByFileName(ConstVariable.SystemPath + @"\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs");
        var semanticModel = GlobalVariable.CompilationByAll.GetSemanticModel(tree);
        var methodDeclarations = tree.GetRoot().DescendantNodes().OfType<MethodDeclarationSyntax>().ToList();
        foreach(var methodDeclaration in methodDeclarations)
        {
            Console.WriteLine($"methodDeclaration:{methodDeclaration.Identifier.ValueText}");
            var localDeclaration = methodDeclaration.DescendantNodes().OfType<LocalDeclarationStatementSyntax>().First();
            var identifierName = localDeclaration.DescendantNodes().OfType<IdentifierNameSyntax>().First();
            foreach (var varibale in localDeclaration.Declaration.Variables)
            {
                Console.WriteLine($"varibale.Identifier:{varibale.Identifier}");
                Console.WriteLine($"varibale.Initializer:{varibale.Initializer}");
            }
            var variableType = semanticModel.GetSymbolInfo(localDeclaration.Declaration.Type).Symbol;
            var typeSymbol = semanticModel.GetTypeInfo(identifierName).Type;
            var symbolInfo = semanticModel.GetSymbolInfo(identifierName);
        }
        Console.WriteLine(tree.FilePath);
    }
}

我在 Visual Studio 2019 中尝试了 Syntax Visualizer 工具，它显示了正确的类型。 在此处输入图像描述

在此处输入图像描述

GetDiagnostic() 的结果如下：

COUNT:  32
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (0,6)-(0,12)未能找到类型或命名空间名“System”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (1,6)-(1,12)未能找到类型或命名空间名“System”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (2,6)-(2,12)未能找到类型或命名空间名“System”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (3,6)-(3,12)未能找到类型或命名空间名“System”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (6,6)-(6,13)未能找到类型或命名空间名“Entitas”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (10,111)-(10,128)未能找到类型或命名空间名“IInitializeSystem”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (14,15)-(14,19)预定义类型“System.Void”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (20,54)-(20,60)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (20,54)-(20,60)未能找到类型或命名空间名“Entity”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (20,79)-(20,97)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (20,27)-(20,31)预定义类型“System.Void”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (12,16)-(12,41)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (16,24)-(16,32)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (16,24)-(16,32)当前上下文中不存在名称“GetWorld”
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (17,60)-(17,85)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (22,24)-(22,32)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (22,24)-(22,32)当前上下文中不存在名称“GetWorld”
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (23,12)-(23,42)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (23,53)-(23,83)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (23,53)-(23,83)预定义类型“System.Void”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (24,65)-(24,95)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (24,97)-(24,101)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (24,97)-(24,101)未能找到类型或命名空间名“Game”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (26,45)-(26,75)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (26,77)-(26,81)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (26,77)-(26,81)未能找到类型或命名空间名“Game”(是否缺少 using 指令或程序集引用?)
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (32,12)-(32,30)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (34,16)-(34,107)预定义类型“System.Boolean”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (38,16)-(38,30)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (38,31)-(38,40)预定义类型“System.Object”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (38,16)-(38,47)预定义类型“System.Boolean”未定义或导入
I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs: (40,20)-(40,111)预定义类型“System.Boolean”未定义或导入
methodDeclaration:Initialize
varibale.Identifier:world
varibale.Initializer:= GetWorld()

methodDeclaration:HandleReliableRequest
varibale.Identifier:world
varibale.Initializer:= GetWorld()

I:\gameplay\Test\GamePlay\System\GameModeSystems\JokerMode\JokerProcessPlayerStatisSystems.cs
4

1 回答 1

0

我似乎找到了解决办法。我把它放在这里给有同样困惑的人。如果你有更好的方法，欢迎在下方写下。谢谢。

        private static void InitEnvironment()
        {
            GlobalVariable.MySolution = MSBuildWorkspace.Create().OpenSolutionAsync(ConstVariable.SolutionPath).Result;

            var metadataReferenceCustomDlls = Directory.GetFiles(@"I:\gameplay\Library\", "*.dll");
            var metadataReferences = metadataReferenceCustomDlls.Select(f => MetadataReference.CreateFromFile(f)).ToList();
            var metadataReferenceNetStandardDlls = Directory.GetFiles(@"C:\Users\user\.nuget\packages\netstandard.library\2.0.3\build\netstandard2.0\ref\", "*.dll");
            var metadataReferencesB = metadataReferenceNetStandardDlls.Select(f => MetadataReference.CreateFromFile(f)).ToList();
            metadataReferences = metadataReferences.Concat(metadataReferencesB).ToList();
            foreach (var projectId in GlobalVariable.MySolution.ProjectIds.ToArray())
            {
                GlobalVariable.MySolution = GlobalVariable.MySolution.AddMetadataReferences(projectId, metadataReferences);
            }

            GlobalVariable.MyProject = GlobalVariable.MySolution.Projects.First(x => x.Name == "GamePlay");
            GlobalVariable.CompilationByAll = GlobalVariable.MyProject.GetCompilationAsync().Result;
        }

我在InitEnvironment()中添加了一些代码。一般情况下都会添加相应的引用。

于 2021-11-02T04:11:47.243 回答