private static DeclarationsProvider GetDeclarationsProvider(Target target)
{
var method = target.Method;
if (method.ReturnType == typeof(Task))
{
return new TaskDeclarationsProvider(target);
}
if (method.ReturnType.GetTypeInfo().IsGenericType
&& method.ReturnType.GetTypeInfo().GetGenericTypeDefinition() == typeof(Task<>))
{
return new GenericTaskDeclarationsProvider(target, typeof(TaskMethodInvoker<>));
}
if (method.ReturnType.GetTypeInfo().IsGenericType
&& method.ReturnType.GetTypeInfo().GetGenericTypeDefinition() == typeof(ValueTask<>))
{
return new GenericTaskDeclarationsProvider(target, typeof(ValueTaskMethodInvoker<>));
}
if (method.ReturnType == typeof(void))
{
var isUsingAsyncKeyword = method.HasAttribute<AsyncStateMachineAttribute>();
if (isUsingAsyncKeyword)
{
throw new NotSupportedException("async void is not supported by design");
}
return new VoidDeclarationsProvider(target);
}
return new NonVoidDeclarationsProvider(target);
}
private static Target CreateTarget(Type type, MethodInfo setupMethod, MethodInfo methodInfo, BenchmarkAttribute attr)
{
var target = new Target(type, methodInfo, setupMethod, attr.Description, baseline: attr.Baseline, operationsPerInvoke: attr.OperationsPerInvoke);
AssertMethodHasCorrectSignature("Benchmark", methodInfo);
AssertMethodIsAccessible("Benchmark", methodInfo);
AssertMethodIsNotGeneric("Benchmark", methodInfo);
return target;
}
public NonVoidDeclarationsProvider(Target target) : base(target) { }
internal DeclarationsProvider(Target target)
{
Target = target;
}
public GenericTaskDeclarationsProvider(Target target, Type invoker) : base(target)
{
invokerFullName = invoker.GetTypeInfo().FullName.Split(GenericArgumentSign).First();
}
public TaskDeclarationsProvider(Target target) : base(target) { }
private static string GetExtraAttributes(Target target)
{
#if !CORE
if (target.Method.GetCustomAttributes(false).OfType<System.STAThreadAttribute>().Any())
{
return "[System.STAThreadAttribute]";
}
#endif
return string.Empty;
}