private object ResolveInternal(TypeRegistration registration, ParametersOverloads parameters, IoCOptions options)
{
if (options == null)
{
options = Options;
}
object resolved;
// Attempt container resolution
if (TryResolve(out resolved, registration, parameters, options))
{
return(resolved);
}
// Attempt container resolution
if (!string.IsNullOrEmpty(registration.Name))
{
// Fail if requesting named resolution and settings set to fail if unresolved
if (options.NamedResolutionFailureAction == NamedResolutionFailureAction.Fail)
{
IoCResolutionException.Raise(registration.Type);
}
// Attemped unnamed fallback container resolution if relevant and requested
if (options.NamedResolutionFailureAction == NamedResolutionFailureAction.AttemptUnnamedResolution)
{
if (TryResolve(out resolved, new TypeRegistration(registration.Type), parameters, options))
{
return(resolved);
}
}
}
#if EXPRESSIONS
// Attempt to construct an automatic lazy factory if possible
if (IsAutomaticLazyFactoryRequest(registration.Type))
{
return(GetLazyAutomaticFactoryRequest(registration.Type));
}
#endif
#if ENUMERABLE_REQUESTS
if (IsIEnumerableRequest(registration.Type))
{
return(GetIEnumerableRequest(registration.Type));
}
#endif
// Attempt unregistered construction if possible and requested
if ((options.UnregisteredResolutionAction == UnregisteredResolutionAction.AttemptResolve)
/*|| (registration.Type.IsGenericType() && options.UnregisteredResolutionAction == UnregisteredResolutionAction.GenericsOnly*/)
{
if (!registration.Type.IsAbstract() && !registration.Type.IsInterface())
{
return(ConstructType(registration.Type, registration.Type, null, parameters));
}
}
// Unable to resolve - throw
return(IoCResolutionException.Raise(registration.Type));
}
public static Never Raise(Type unresolvedType, string messageFormat, Exception innerException = null)
{
var message = String.Format(messageFormat ?? DEFAULT_FORMAT, unresolvedType?.FullName);
IoCResolutionException ex;
if (innerException != null)
{
ex = new IoCResolutionException(unresolvedType, message, innerException);
}
else
{
ex = new IoCResolutionException(unresolvedType, message);
}
throw ex;
}
private bool TryResolve(out object resolved, TypeRegistration registration, ParametersOverloads parameters, IoCOptions options)
{
for (var container = this; container != null; container = container.Parent)
{
IoCFactory factory;
if (registry.TryGetValue(registration, out factory))
{
try {
resolved = factory.GetObject(registration.Type, this, parameters);
return(true);
}
catch (IoCResolutionException) {
throw;
}
catch (Exception ex) {
IoCResolutionException.Raise(registration.Type, ex);
}
}
#if RESOLVE_OPEN_GENERICS
// Attempt container resolution of open generic
if (registration.Type.IsGenericType())
{
var openTypeRegistration = new TypeRegistration(registration.Type.GetGenericTypeDefinition(),
registration.Name);
if (_RegisteredTypes.TryGetValue(openTypeRegistration, out factory))
{
try {
return(factory.GetObject(registration.Type, this, parameters, options));
}
catch (TinyIoCResolutionException) {
throw;
}
catch (Exception ex) {
IoCResolutionException.Raise(registration.Type, ex);
}
}
}
#endif
}
resolved = null;
return(false);
}