public ICRegILGen ResolveNeedBy(Type type, object key)
{
ICReg registration;
if (_container.Registrations.TryGetValue(new KeyAndType(key, type), out registration))
{
var multi = registration as ICRegMulti;
if (multi != null)
{
registration = ChooseFromMulti(multi, false) ?? multi.ChosenOne;
}
}
if (registration == null)
{
if (type.IsDelegate())
{
var resultType = type.GetMethod("Invoke").ReturnType;
var nestedRegistration = ResolveNeedBy(resultType, key);
if (nestedRegistration == null) return null;
registration = new DelegateImpl(key, type, nestedRegistration);
}
else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Lazy<>))
{
var resultType = type.GetGenericArguments()[0];
var nestedRegistration = ResolveNeedBy(resultType, key);
if (nestedRegistration == null) return null;
registration = new LazyImpl(type, nestedRegistration);
}
else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IEnumerable<>))
{
var resultType = type.GetGenericArguments()[0];
var child = MakeEnumEnabledChild();
var nestedRegistration = child.ResolveNeedBy(resultType, key);
if (nestedRegistration == null)
{
if (key != null) return null;
registration = new EmptyEnumerableImpl(type, resultType);
}
else
{
registration = new EnumerableImpl(key, type, resultType, child, nestedRegistration);
}
}
else if (type.IsArray && type.GetArrayRank() == 1)
{
var resultType = type.GetElementType();
var child = MakeEnumEnabledChild();
var nestedRegistration = child.ResolveNeedBy(resultType, key);
if (nestedRegistration == null) return null;
registration = new EnumerableImpl(key, type, resultType, child, nestedRegistration);
}
else if (type.IsGenericType && TupleTypes.Contains(type.GetGenericTypeDefinition()))
{
registration = new AlwaysNewImpl(type, type.GetConstructors()[0]);
}
}
if (registration != null)
{
var result = registration as ICRegILGen;
if (result != null) return result;
throw new ArgumentException("Builder for " + type.ToSimpleName() + " is not ILGen capable");
}
return null;
}
public ICRegILGen?ResolveNeedBy(Type type, object?key)
{
if (_container.Registrations.TryGetValue(new KeyAndType(key, type), out var registration))
{
if (registration is ICRegMulti multi)
{
registration = ChooseFromMulti(multi, false) ?? multi.ChosenOne;
}
}
if (registration == null)
{
if (type.IsDelegate())
{
var resultType = type.GetMethod("Invoke") !.ReturnType;
var nestedRegistration = ResolveNeedBy(resultType, key);
if (nestedRegistration == null)
{
return(null);
}
registration = new DelegateImpl(key, type, nestedRegistration);
}
else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Lazy <>))
{
var resultType = type.GetGenericArguments()[0];
var nestedRegistration = ResolveNeedBy(resultType, key);
if (nestedRegistration == null)
{
return(null);
}
registration = new LazyImpl(type, nestedRegistration);
}
else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IEnumerable <>))
{
var resultType = type.GetGenericArguments()[0];
var child = MakeEnumEnabledChild();
var nestedRegistration = child.ResolveNeedBy(resultType, key);
if (nestedRegistration == null)
{
if (key != null)
{
return(null);
}
registration = new EmptyEnumerableImpl(type, resultType);
}
else
{
registration = new EnumerableImpl(key, type, resultType, child, nestedRegistration);
}
}
else if (type.IsArray && type.GetArrayRank() == 1)
{
var resultType = type.GetElementType();
var child = MakeEnumEnabledChild();
var nestedRegistration = child.ResolveNeedBy(resultType !, key);
if (nestedRegistration == null)
{
return(null);
}
registration = new EnumerableImpl(key, type, resultType, child, nestedRegistration);
}
else if (type.IsGenericType && TupleTypes.Contains(type.GetGenericTypeDefinition()))
{
registration = new AlwaysNewImpl(type, type.GetConstructors()[0], false);
}
}
if (registration != null)
{
if (registration is ICRegILGen result)
{
return(result);
}
throw new ArgumentException("Builder for " + type.ToSimpleName() + " is not ILGen capable");
}
return(null);
}
