private static MetadataReference ProcessAssemblyReference(AssemblyReference assemblyReference)
{
if (assemblyReference.NuGet == null)
{
var assemblyPath = Path.Combine(systemAssembliesFolder, assemblyReference.Name);
return(MetadataReference.CreateFromFile(assemblyPath));
}
packageManager.InstallPackage(assemblyReference.NuGet.Name, assemblyReference.NuGet.Version,
ignoreDependencies: true, allowPrereleaseVersions: false);
var matchingDlls = Directory.GetFiles(GetNuGetPackageDirectory(assemblyReference.NuGet),
assemblyReference.Name, SearchOption.AllDirectories)
.Select(x => new FileInfo(x))
.Where(x => allowedNugetLibDirectories.Any(y => x.Directory.Name.StartsWith(y)))
.OrderByDescending(x => x.FullName);
return(MetadataReference.CreateFromFile(matchingDlls.First().FullName));
}
public static (SyntaxTree, SemanticModel) Compile(string classDeclaration, bool isCSharp = true,
params AssemblyReference[] references)
{
using (var workspace = new AdhocWorkspace())
{
var document = workspace.CurrentSolution.AddProject("project", "project.dll", isCSharp ? LanguageNames.CSharp : LanguageNames.VisualBasic)
.AddMetadataReference(AssemblyReferenceService.GetMetadataReference(AssemblyReference.FromFramework("mscorlib.dll")))
.AddMetadataReference(AssemblyReferenceService.GetMetadataReference(AssemblyReference.FromFramework("System.dll")))
.AddMetadataReference(AssemblyReferenceService.GetMetadataReference(AssemblyReference.FromFramework("System.Core.dll")))
.AddMetadataReferences(references.Select(AssemblyReferenceService.GetMetadataReference))
.AddDocument("Class1", classDeclaration);
var compilation = document.Project.GetCompilationAsync().Result;
var tree = compilation.SyntaxTrees.First();
return(tree, compilation.GetSemanticModel(tree));
}
}
private static Project CreateProject(string fileExtension, string assemblyName, AdhocWorkspace workspace,
params AssemblyReference[] additionalReferences)
{
var language = fileExtension == CSharpFileExtension
? LanguageNames.CSharp
: LanguageNames.VisualBasic;
var project = workspace.CurrentSolution.AddProject(assemblyName, $"{assemblyName}.dll", language)
.AddMetadataReference(AssemblyReferenceService.GetMetadataReference(AssemblyReference.FromFramework("mscorlib.dll")))
.AddMetadataReference(AssemblyReferenceService.GetMetadataReference(AssemblyReference.FromFramework("System.dll")))
.AddMetadataReference(AssemblyReferenceService.GetMetadataReference(AssemblyReference.FromFramework("System.Core.dll")))
.AddMetadataReferences(additionalReferences.Select(AssemblyReferenceService.GetMetadataReference));
// adding an extra file to the project
// this won't trigger any issues, but it keeps a reference to the original ParseOption, so
// if an analyzer/codefix changes the language version, Roslyn throws an ArgumentException
project = project.AddDocument("ExtraEmptyFile.g" + fileExtension, string.Empty).Project;
return(project);
}
public static MetadataReference GetMetadataReference(AssemblyReference assemblyReference) => cache.GetOrAdd(assemblyReference, ProcessAssemblyReference);