Question

我有一个用C＃编写的.NET程序集，它引用Microsoft.CodeAnalysis，Microsoft.CodeAnalysis.CSharp和System.Collections.Immutable程序集并包含此函数：

    public string GetFirstNamespace(string code)
    {
        var tree = CSharpSyntaxTree.ParseText (code);
        var root = tree.GetRoot ();
        var @using = root.DescendantNodes ().OfType<UsingDirectiveSyntax> ();
        var @types = root.DescendantNodes ().OfType<TypeDeclarationSyntax> ();
        var @enums = root.DescendantNodes ().OfType<EnumDeclarationSyntax> ();
        var @namespaces = root.DescendantNodes ().OfType<NamespaceDeclarationSyntax> ();
        return @namespaces.First ().GetText ().ToString();
    }

我可以用C＃编写的命令行程序调用此函数：

    public static void Main(string[] args)
    {
        string code = "using System; namespace Foo { public class Program { public static void Main(string[] args) { Console.WriteLine(\"Hello, World\"); } } }";
        Utilities u = new Utilities();
        string ns = u.GetFirstNamespace(code);
        Console.WriteLine (ns);
    }

但是如果我尝试从T4模板调用相同的方法，使用TextTransform.exe运行，我会遇到各种麻烦。最初，有一长串的程序集无法找到：

$ /usr/lib/monodevelop/AddIns/MonoDevelop.TextTemplating/TextTransform.exe -P=./bin/Debug T4Template.tt
Processing 'T4Template.tt' failed.
(0,0): ERROR Metadata file `System.Runtime.dll' could not be found
(0,0): ERROR Metadata file `System.Collections.dll' could not be found
(0,0): ERROR Metadata file `System.Runtime.InteropServices.dll' could not be found
(0,0): ERROR Metadata file `System.Resources.ResourceManager.dll' could not be found
(0,0): ERROR Metadata file `System.Globalization.dll' could not be found
(0,0): ERROR Metadata file `System.Linq.dll' could not be found
(0,0): ERROR Metadata file `System.Diagnostics.Debug.dll' could not be found
(0,0): ERROR Metadata file `System.Runtime.Extensions.dll' could not be found
(0,0): ERROR Metadata file `System.Threading.dll' could not be found
(0,0): ERROR Metadata file `System.Diagnostics.Tools.dll' could not be found
(0,0): ERROR Metadata file `System.Reflection.dll' could not be found

将已安装的Mono目录之一添加到程序集搜索路径可修复这些问题，但会导致其他问题：

$ /usr/lib/monodevelop/AddIns/MonoDevelop.TextTemplating/TextTransform.exe -P=./bin/Debug -P=/usr/lib/mono/4.5/Facades T4Template.tt
Invalid type Microsoft.CodeAnalysis.SyntaxTree for instance field Microsoft.CodeAnalysis.SyntaxNode:_syntaxTree
Processing 'T4Template.tt' failed.
(0,0): ERROR Error running transform: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeLoadException: Failure has occurred while loading a type.
  at T4CSTest.Utilities.GetFirstNamespace (System.String code) <0x4047b4e0 + 0x0002f> in <filename unknown>:0 
  at Microsoft.VisualStudio.TextTemplating.GeneratedTextTransformation21eb083a.TransformText () <0x4047afa0 + 0x0009b> in <filename unknown>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x7f7d1d530780 + 0x000a1> in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x7f7d1d530780 + 0x000ef> in <filename unknown>:0 
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) <0x7f7d1d368cf0 + 0x0002a> in <filename unknown>:0 
  at Mono.TextTemplating.CompiledTemplate.Process () <0x4047a520 + 0x0036f> in <filename unknown>:0

同样的事情适用于Windows上的Visual Studio 2013。

我尝试使用从NuGet获得的引用程序集，并使用来自https://github.com/mono/roslyn的Microsoft.CodeAnalysis。*程序集，使用Mono 4.2.1构建（使用单行修补程序修复构建错误）。

我的基本问题是，我怎样才能让它发挥作用？

一个附属问题是，为什么没有帮助它找不到所有那些System。*组件？无论如何都不应该找到它们吗？这是因为那些Microsoft.CodeAnalysis。*程序集是针对PCL构建的吗？将PCL目录添加到搜索路径会导致更长的问题列表，主要是使用多重定义的类（实际上并不太意外）。

修改 https://github.com/tomkcook/T4CSTest

提供了完整的演示代码

在TextTransform.exe，Mono下加载程序集

0 个答案: