加载由 Roslyn 编译器生成的程序集
本文关键字:程序集 编译器 Roslyn 加载 | 更新日期: 2023-09-27 18:35:14
我正在使用Roslyn编译器生成一个Greeter.dll。尝试加载 DLL 文件时出现问题。
代码如下:
using System;
using Roslyn.Compilers;
using Roslyn.Compilers.CSharp;
using System.IO;
using System.Reflection;
using System.Linq;
namespace LoadingAClass
{
class Program
{
static void Main(string[] args)
{
var syntaxTree = SyntaxTree.ParseCompilationUnit(@"
class Greeter
{
static void Greet()
{
Console.WriteLine(""Hello, World"");
}
}");
var compilation = Compilation.Create("Greeter.dll",
syntaxTrees: new[] { syntaxTree },
references: new[] {
new AssemblyFileReference(typeof(object).Assembly.Location),
new AssemblyFileReference(typeof(Enumerable).Assembly.Location),
});
Assembly assembly;
using (var file = new FileStream("Greeter.dll", FileMode.Create))
{
EmitResult result = compilation.Emit(file);
}
assembly = Assembly.LoadFile(Path.Combine(Directory.GetCurrentDirectory(), @"Greeter.dll"));
Type type = assembly.GetType("Greeter");
var obj = Activator.CreateInstance(type);
type.InvokeMember("Greet",
BindingFlags.Default | BindingFlags.InvokeMethod,
null,
obj,
null);
Console.WriteLine("<ENTER> to continue");
Console.ReadLine();
}
}
// Thanks, http://blogs.msdn.com/b/csharpfaq/archive/2011/11/23/using-the-roslyn-symbol-api.aspx
}
错误消息出现在行assembly = Assembly.LoadFile(Path.Combine(Directory.GetCurrentDirectory(), @"Greeter.dll"));
上,并读取
Im Modul wurde ein Assemblymanifest erwartet.(Ausnahme von HRESULT: 0x80131018)
大致翻译为
模块中应包含程序集清单。
有谁知道我在这里错过了什么?
我偶然发现了这个,即使你有一个公认的答案,我认为它总体上没有帮助。 所以,我就把这个留给像我这样的未来搜索者。
代码的问题有两件事,您可以通过查看返回的值来发现
EmitResult result = compilation.Emit(file);
如果查看 EmitResult 对象上的属性,您会发现结果中有 2 个错误。诊断成员。
- 未找到主方法
- 找不到类控制台
因此,要解决问题,1.您需要将输出标记为dll2. 您需要在传递到 API 的代码中添加"using System;"或说"System.Console.WriteLine"
以下代码用于进行更改以解决这两个问题:
var outputFile = "Greeter.dll";
var syntaxTree = SyntaxTree.ParseCompilationUnit(@"
// ADDED THE FOLLOWING LINE
using System;
class Greeter
{
public void Greet()
{
Console.WriteLine(""Hello, World"");
}
}");
var compilation = Compilation.Create(outputFile,
syntaxTrees: new[] { syntaxTree },
references: new[] {
new AssemblyFileReference(typeof(object).Assembly.Location),
new AssemblyFileReference(typeof(Enumerable).Assembly.Location),
},
// ADDED THE FOLLOWING LINE
options: new CompilationOptions(OutputKind.DynamicallyLinkedLibrary));
using (var file = new FileStream(outputFile, FileMode.Create))
{
EmitResult result = compilation.Emit(file);
}
Assembly assembly = Assembly.LoadFrom("Greeter.dll");
Type type = assembly.GetType("Greeter");
var obj = Activator.CreateInstance(type);
type.InvokeMember("Greet",
BindingFlags.Default | BindingFlags.InvokeMethod,
null,
obj,
null);
Console.WriteLine("<ENTER> to continue");
Console.ReadLine();
我一直在向O2 Plarform添加Roslyn支持,以下是如何使用其Roslyn支持来编译(代码),创建(和汇编)和调用(其方法)一行代码:
return @"using System; class Greeter { static string Greet() { return ""Another hello!!""; }}"
.tree().compiler("Great").create_Assembly().type("Greeter").invokeStatic("Greet");
//O2Ref:O2_FluentSharp_Roslyn.dll
这是一个执行看起来像你的代码片段的版本(我添加了一个返回值):
panel.clear().add_ConsoleOut();
var code = @"
using System;
class Greeter
{
static string Greet()
{
Console.WriteLine(""Hello, World"");
return ""hello from here"";
}
}";
var tree = code.astTree();
if (tree.hasErrors())
return tree.errors();
var compiler = tree.compiler("Great")
.add_Reference("mscorlib");
if (compiler.hasErrors())
return compiler.errors();
var assembly =tree.compiler("Great")
.create_Assembly();
return assembly.type("Greeter")
.invokeStatic("Greet");
//O2Ref:O2_FluentSharp_Roslyn.dll
//O2File:_Extra_methods_Roslyn_API.cs
//O2File:API_ConsoleOut.cs
有关更多详细信息和屏幕截图,请参阅此博客文章: 1 行编译、创建和执行:使用 Roslyn 动态编译和执行方法的 O2 脚本
更新:请参阅 http://blog.diniscruz.com/search/label/Roslyn 以获取大量与Roslyn相关的帖子和工具(使用O2平台创建)
引用有一个新的 API,如下所示:
var compilation = Compilation.Create(outputFile,
syntaxTrees: new[] { syntaxTree },
references: new[] {
new MetadataFileReference(typeof(object).Assembly.Location),
new MetadataFileReference(typeof(Enumerable).Assembly.Location),
},
options: new CompilationOptions(OutputKind.DynamicallyLinkedLibrary)
);
这是最新的Roslyn-CTP 2012在9月...
这段代码运行得很好:
using System;
using Roslyn.Compilers;
using Roslyn.Compilers.CSharp;
using System.IO;
using System.Reflection;
using System.Linq;
namespace LoadingAClass
{
class Program
{
static void Main(string[] args)
{
var syntaxTree = SyntaxTree.ParseCompilationUnit(@"
using System;
namespace HelloWorld
{
class Greeter
{
public static void Greet()
{
Console.WriteLine(""Hello, World"");
}
}
}");
string dllPath = Path.Combine(Directory.GetCurrentDirectory(), "Greeter.dll");
string pdbPath = Path.Combine(Directory.GetCurrentDirectory(), "Greeter.pdb");
var compilation = Compilation.Create(dllPath,
new CompilationOptions(
assemblyKind: AssemblyKind.DynamicallyLinkedLibrary
))
.AddSyntaxTrees( syntaxTree )
.AddReferences(new AssemblyFileReference(typeof(object).Assembly.Location))
.AddReferences(new AssemblyFileReference(typeof(Enumerable).Assembly.Location));
EmitResult result;
using (FileStream dllStream = new FileStream(dllPath, FileMode.OpenOrCreate))
using (FileStream pdbStream = new FileStream(pdbPath, FileMode.OpenOrCreate))
{
result = compilation.Emit(
executableStream: dllStream,
pdbFileName: pdbPath,
pdbStream: pdbStream);
}
if (result.Success)
{
//assembly = Assembly.LoadFile(Path.Combine(Directory.GetCurrentDirectory(), @"Greeter.dll"));
Assembly assembly = Assembly.LoadFrom(@"Greeter.dll");
Type type = assembly.GetType("HelloWorld.Greeter");
var obj = Activator.CreateInstance(type);
type.InvokeMember("Greet",
BindingFlags.Default | BindingFlags.InvokeMethod,
null,
obj,
null);
}
else
{
Console.WriteLine("No Go");
Console.WriteLine(result.Diagnostics.ToString());
}
Console.WriteLine("<ENTER> to continue");
Console.ReadLine();
}
}
// Thanks, http://blogs.msdn.com/b/csharpfaq/archive/2011/11/23/using-the-roslyn-symbol-api.aspx
// Thanks, http://social.msdn.microsoft.com/Forums/en-US/roslyn/thread/d620a4a1-3a90-401b-b946-bfa1fc6ad7a2
}
原来我需要创建一个 pdb 文件。
using (FileStream dllStream = new FileStream(dllPath, FileMode.OpenOrCreate))
using (FileStream pdbStream = new FileStream(pdbPath, FileMode.OpenOrCreate))
{
result = compilation.Emit(
executableStream: dllStream,
pdbFileName: pdbPath,
pdbStream: pdbStream);
}