public async Task <EvalResult> RunEvalAsync(string code)
{
var sb = new StringBuilder();
using var textWr = new ConsoleLikeStringWriter(sb);
var env = new BasicEnvironment();
var sw = Stopwatch.StartNew();
var context = new ScriptExecutionContext(code);
try
{
await _preProcessor.PreProcess(context, s => _logger.LogInformation("{message}", s));
}
catch (Exception ex)
{
var diagnostics = Diagnostic.Create(new DiagnosticDescriptor("REPL01", ex.Message, ex.Message, "Code", DiagnosticSeverity.Error, true),
Location.Create("", TextSpan.FromBounds(0, 0), new LinePositionSpan(LinePosition.Zero, LinePosition.Zero)));
_logger.LogCritical(ex, "{message}", ex.Message);
return(EvalResult.CreateErrorResult(code, sb.ToString(), sw.Elapsed, new[] { diagnostics }.ToImmutableArray()));
}
var eval = CSharpScript.Create(context.Code, context.Options, typeof(Globals));
var compilation = eval.GetCompilation().WithAnalyzers(Analyzers);
var compileResult = await compilation.GetAllDiagnosticsAsync();
var compileErrors = compileResult.Where(a => a.Severity == DiagnosticSeverity.Error).ToImmutableArray();
sw.Stop();
var compileTime = sw.Elapsed;
if (!compileErrors.IsEmpty)
{
return(EvalResult.CreateErrorResult(code, sb.ToString(), sw.Elapsed, compileErrors));
}
var globals = new Globals();
Globals.Random = random;
Globals.Console = textWr;
Globals.Environment = env;
sw.Restart();
ScriptState <object> result;
try
{
result = await eval.RunAsync(globals, ex => true);
}
catch (CompilationErrorException ex)
{
return(EvalResult.CreateErrorResult(code, sb.ToString(), sw.Elapsed, ex.Diagnostics));
}
sw.Stop();
var evalResult = new EvalResult(code, result, sb.ToString(), sw.Elapsed, compileTime)
{
Code = code
};
//this hack is to test if we're about to send an object that can't be serialized back to the caller.
//if the object can't be serialized, return a failure instead.
try
{
_ = JsonSerializer.Serialize(evalResult, _serializerOptions);
}
catch (Exception ex)
{
evalResult = new EvalResult
{
Code = code,
CompileTime = compileTime,
ConsoleOut = sb.ToString(),
ExecutionTime = sw.Elapsed,
Exception = $"An exception occurred when serializing the response: {ex.GetType().Name}: {ex.Message}",
ExceptionType = ex.GetType().Name
};
}
return(evalResult);
}
