private bool TryGetUnderlyingSource(ITypeSymbol target, out InstanceSource instanceSource, out bool isAmbiguous, out IEnumerable <FactoryMethod> sourcesNotMatchingConstraints)
{
isAmbiguous = false;
sourcesNotMatchingConstraints = Array.Empty <FactoryMethod>();
if (_delegateParameters is not null && _delegateParameters.TryGetValue(target, out var delegateParameter))
{
instanceSource = delegateParameter;
return(true);
}
if (_instanceSources.TryGetValue(target, out var instanceSources))
{
instanceSource = instanceSources.Best !;
isAmbiguous = instanceSource is null;
return(!isAmbiguous);
}
if (_genericRegistrationsResolver.TryResolve(target, out var constructedFactoryMethod, out isAmbiguous, out sourcesNotMatchingConstraints))
{
instanceSource = constructedFactoryMethod;
return(true);
}
