使用Roslyn编译器动态处理C#字符串可以通过以下步骤实现:
- 导入所需的命名空间:
using Microsoft.CodeAnalysis.CSharp; using Microsoft.CodeAnalysis.CSharp.Syntax; using Microsoft.CodeAnalysis;
- 创建SyntaxTree:
string code = "Console.WriteLine(\"Hello, world!\");"; SyntaxTree syntaxTree = SyntaxFactory.ParseSyntaxTree(code);
- 创建编译选项:
CSharpCompilationOptions compilationOptions = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary);
- 创建编译上下文:
string assemblyName = Path.GetRandomFileName(); CSharpCompilation compilation = CSharpCompilation.Create(assemblyName) .WithOptions(compilationOptions) .AddReferences(MetadataReference.CreateFromFile(typeof(object).Assembly.Location)) .AddSyntaxTrees(syntaxTree);
- 编译代码并获取生成的程序集:
using (var ms = new MemoryStream()) { EmitResult result = compilation.Emit(ms); if (!result.Success) { IEnumerablefailures = result.Diagnostics.Where(diagnostic => diagnostic.IsWarningAsError || diagnostic.Severity == DiagnosticSeverity.Error); foreach (Diagnostic diagnostic in failures) { Console.Error.WriteLine("{0}: {1}", diagnostic.Id, diagnostic.GetMessage()); } } else { ms.Seek(0, SeekOrigin.Begin); Assembly assembly = Assembly.Load(ms.ToArray()); dynamic compiledCode = Activator.CreateInstance(assembly.GetType("TestProgram")); compiledCode.Main(); } }
通过以上代码,你可以动态编译和执行C#字符串中的代码。请注意,这种方法可能存在一定的安全风险,需要谨慎使用。