private static CompilationResult CompileInternal(string originalName, string cSharpSafeName, MemberDeclarationSyntax @class, IndexDefinition definition)
{
var name = cSharpSafeName + "." + Guid.NewGuid() + IndexExtension;
var @namespace = RoslynHelper.CreateNamespace(IndexNamespace)
.WithMembers(SyntaxFactory.SingletonList(@class));
var res = GetUsingDirectiveAndSyntaxTreesAndReferences(definition);
var compilationUnit = SyntaxFactory.CompilationUnit()
.WithUsings(RoslynHelper.CreateUsings(res.UsingDirectiveSyntaxes))
.WithMembers(SyntaxFactory.SingletonList <MemberDeclarationSyntax>(@namespace))
.NormalizeWhitespace();
SyntaxNode formattedCompilationUnit;
using (var workspace = new AdhocWorkspace())
{
formattedCompilationUnit = Formatter.Format(compilationUnit, workspace);
}
string sourceFile = null;
if (EnableDebugging)
{
sourceFile = Path.Combine(Path.GetTempPath(), name + ".cs");
File.WriteAllText(sourceFile, formattedCompilationUnit.ToFullString(), Encoding.UTF8);
}
var st = EnableDebugging
? SyntaxFactory.ParseSyntaxTree(File.ReadAllText(sourceFile), path: sourceFile, encoding: Encoding.UTF8)
: SyntaxFactory.ParseSyntaxTree(formattedCompilationUnit.ToFullString());
res.SyntaxTrees.Add(st);
var compilation = CSharpCompilation.Create(
assemblyName: name,
syntaxTrees: res.SyntaxTrees,
references: res.References,
options: new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary)
.WithOptimizationLevel(EnableDebugging ? OptimizationLevel.Debug : OptimizationLevel.Release)
);
var code = formattedCompilationUnit.SyntaxTree.ToString();
var asm = new MemoryStream();
var pdb = EnableDebugging ? new MemoryStream() : null;
var result = compilation.Emit(asm, pdb, options: new EmitOptions(debugInformationFormat: DebugInformationFormat.PortablePdb));
if (result.Success == false)
{
IEnumerable <Diagnostic> failures = result.Diagnostics
.Where(diagnostic => diagnostic.IsWarningAsError || diagnostic.Severity == DiagnosticSeverity.Error);
var sb = new StringBuilder();
sb.AppendLine($"Failed to compile index {originalName}");
sb.AppendLine();
sb.AppendLine(code);
sb.AppendLine();
foreach (var diagnostic in failures)
{
sb.AppendLine(diagnostic.ToString());
}
throw new IndexCompilationException(sb.ToString());
}
asm.Position = 0;
Assembly assembly;
if (EnableDebugging)
{
pdb.Position = 0;
assembly = AssemblyLoadContext.Default.LoadFromStream(asm, pdb);
}
else
{
assembly = AssemblyLoadContext.Default.LoadFromStream(asm);
}
return(new CompilationResult
{
Code = code,
Type = assembly.GetType($"{IndexNamespace}.{cSharpSafeName}")
});
}