(ConstructorInfo, object[]) SelectConstructor(Type implType, Type genericsElementType, DiagnosticServiceProvider provider)
{
var constructors = implType.GetConstructors().OrderByDescending(x => x.GetParameters().Length);
ConstructorInfo ctor = default;
object[] args = default;
foreach (var item in constructors)
{
ctor = item;
var parameters = ctor.GetParameters();
args = parameters.Select(x => provider.GetServiceCore1(x.ParameterType, genericsElementType)).ToArray();
if (args.Any(x => x == null))
{
continue;
}
break;
}
return(ctor, args);
}
public object Instantiate(DiagnosticServiceProvider provider, Type genericsElementType)
{
if (descriptor.Lifetime == ServiceLifetime.Singleton)
{
if (isGenericType && genericsElementType != null)
{
if (ItemPerGenerics.TryGetValue(genericsElementType, out var value))
{
return(value);
}
}
else
{
if (Item != null)
{
return(Item);
}
}
}
lock (this)
{
object instance;
if (descriptor.ImplementationFactory != null)
{
instance = descriptor.ImplementationFactory(provider);
}
else
{
var implType = descriptor.ImplementationType;
if (isGenericType && genericsElementType != null)
{
implType = implType.MakeGenericType(genericsElementType);
}
var(ctor, args) = SelectConstructor(implType, genericsElementType, provider);
if (ctor == null)
{
throw new InvalidOperationException("IL2CPP issue, ctor is null. Type:" + implType);
}
instance = ctor.Invoke(args);
}
if (descriptor.Lifetime == ServiceLifetime.Singleton)
{
if (isGenericType && genericsElementType != null)
{
ItemPerGenerics[genericsElementType] = instance;
}
else
{
Item = instance;
}
return(instance);
}
else
{
// Transient, Scoped(not supported, same as Transient).
return(instance);
}
}
}
