template<typename T> friend class CollectionItemType;
private:
- template<typename T, typename S, bool = NeedsCollection<typename T::Loader>::value>
- struct Add;
-
Collection &coll;
public:
Loader(Collection &);
Collection &get_object() const { return coll; }
private:
- template<typename T, typename S, typename C>
- void coll_item(const std::string &n)
- {
- RefPtr<T> it = new T;
- load_sub(*it, dynamic_cast<C &>(coll));
- coll.add<S>(n, it.get());
- it.release();
- }
-
template<typename T, typename S>
void item(const std::string &n)
{
RefPtr<T> it = new T;
- load_sub(*it);
+ ItemLoader<T> ldr(*it, coll);
+ load_sub_with(ldr);
coll.add<S>(n, it.get());
it.release();
}
};
+protected:
+ template<typename T, bool = NeedsCollection<typename T::Loader>::value>
+ class ItemLoader;
+
private:
typedef std::map<std::string, Variant> ItemMap;
typedef std::list<CollectionItemTypeBase *> TypeList;
insert_unique(items, name, ptr);
}
+ /** Adds the name of a future object, guessing its type. If a type matching
+ the name can't be found, nothing is done. */
void add_future(const std::string &name);
+ /** Adds the name of a future object, using a keyword to determine its type.
+ The keyword must be known to the collection. */
+ void add_future_with_keyword(const std::string &name, const std::string &);
+
public:
/// Gets a typed object from the collection.
template<typename T>
CollectionItemType<T> &add_type();
};
-
-template<typename T, typename S>
-struct Collection::Loader::Add<T, S, false>
+template<typename T>
+class Collection::ItemLoader<T, false>: public T::Loader
{
- static void add(Loader &loader, const std::string &kwd)
- { loader.add(kwd, &Loader::item<T, S>); }
+public:
+ ItemLoader(T &o, Collection &):
+ T::Loader(o)
+ { }
};
-template<typename T, typename S>
-struct Collection::Loader::Add<T, S, true>
+template<typename T>
+class Collection::ItemLoader<T, true>: public T::Loader
{
- static void add(Loader &loader, const std::string &kwd)
- { loader.add(kwd, &Loader::coll_item<T, S, typename T::Loader::Collection>); }
+public:
+ ItemLoader(T &o, Collection &c):
+ T::Loader(o, dynamic_cast<typename T::Loader::Collection &>(c))
+ { }
};
virtual ~CollectionItemTypeBase();
void set_keyword(const std::string &);
+ const std::string &get_keyword() const { return kwd; }
void add_suffix(const std::string &);
+ bool match_name(const std::string &) const;
virtual void add_to_loader(Collection::Loader &) const = 0;
virtual bool can_create() const = 0;
virtual void create_item(Collection &, const std::string &) const = 0;
- bool match_name(const std::string &) const;
virtual Variant create_future() const = 0;
template<typename T>
{ return RefPtr<S>(0); }
virtual void add_to_loader(Collection::Loader &loader, const std::string &kwd)
- { Collection::Loader::Add<T, S>::add(loader, kwd); }
+ { loader.add(kwd, &Collection::Loader::item<T, S>); }
};
CreatorBase *creat;
if((*j)->can_create() && (*j)->check_type<NCT>())
(*j)->create_item(*this, name);
- return *get_item(items, name).value<RefPtr<NCT> >();
+ NCT *ptr = get_item(items, name).value<RefPtr<NCT> >().get();
+ if(!ptr)
+ throw key_error(typeid(ItemMap));
+ return *ptr;
}
template<typename T>