public EmitResult Emit()
{
var diagnostics = ImmutableArray.CreateBuilder <Diagnostic>();
var validateOk = ValidateCompilation(diagnostics);
if (!validateOk)
{
return(new EmitResult(false, diagnostics.ToImmutable()));
}
if (_bootstrapper is null)
{
throw new ArgumentNullException(nameof(_bootstrapper));
}
var bootstrapper = _bootstrapper.GetBootstrapper();
var configuration = ParseConfiguration();
var syntaxTrees = TransformSyntaxTrees(diagnostics, configuration)
.Append(bootstrapper);
if (_csharpSyntaxTrees?.Length > 0)
{
syntaxTrees = syntaxTrees.Concat(_csharpSyntaxTrees);
}
if (diagnostics.Where(d => d.DiagnosticType == DiagnosticType.Error).Any())
{
return(new EmitResult(false, diagnostics.ToImmutable()));
}
var dllFileName = $"{_projectName}.dll";
var compilation = CSharpCompilation
.Create(_projectName)
.WithOptions(new CSharpCompilationOptions(OutputKind.ConsoleApplication)
.WithOptimizationLevel(configuration)
.WithPlatform(Platform.AnyCpu))
.WithReferences(BuildReferences())
.AddSyntaxTrees(syntaxTrees);
var result = EmitAssembly(compilation, dllFileName, configuration);
foreach (var diagnostic in result.Diagnostics)
{
diagnostics.Add(Diagnostic.FromCSharpDiagnostic(diagnostic));
}
return(new EmitResult(result.Success, diagnostics.ToImmutable(), _outputFolder, dllFileName, syntaxTrees.ToImmutableArray()));
}
private bool ValidateCompilation(ImmutableArray <Diagnostic> .Builder diagnostics)
{
var error = false;
if (!Directory.Exists(_outputFolder))
{
diagnostics.Add(Diagnostic.Error(new TextLocation(), "Invalid output directory."));
error = true;
}
if (string.IsNullOrEmpty(_projectName))
{
diagnostics.Add(Diagnostic.Error(new TextLocation(), "Invalid assembly name."));
error = true;
}
if (_syntaxTrees is null || _syntaxTrees.Length == 0)
{
diagnostics.Add(Diagnostic.Error(new TextLocation(), "At least one syntax tree is required."));
error = true;
}
if (_targetFrameworks is null || _targetFrameworks.Length == 0)
{
diagnostics.Add(Diagnostic.Error(new TextLocation(), "At least one target framework is required."));
error = true;
}
if (_bootstrapper is null)
{
diagnostics.Add(Diagnostic.Error(new TextLocation(), "Bootstrapper not set."));
error = true;
}
return(!error);
}