-/* $Id$
-
-This file is part of libmspdatafile
-Copyright © 2006 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_DATAFILE_COLLECTION_H_
#define MSP_DATAFILE_COLLECTION_H_
+#include <msp/core/meta.h>
+#include <msp/core/maputils.h>
#include <msp/core/refptr.h>
#include "loader.h"
enum { result=(sizeof(f<T>(0))==sizeof(Yes)) };
};
-template<typename T>
-struct RemoveConst
-{ typedef T Type; };
-
-template<typename T>
-struct RemoveConst<const T>
-{ typedef T Type; };
-
/**
A collection of objects that can be loaded from a datafile. Each object is
identified by a name, which must be unique across the entire collection.
*/
struct ItemKeywordBase
{
+ virtual ~ItemKeywordBase() { }
virtual void add_to_loader(Loader &) const { };
};
template<typename S>
struct ItemCreatorBridge: public ItemCreatorBase
{
- virtual S *create(Collection &, const std::string &) const =0;
+ virtual S *create(Collection &, const std::string &) const = 0;
};
template<typename T, typename S, typename C>
template<typename T>
void add(const std::string &name, T *d)
{
- if(items.count(name))
- throw KeyError("Duplicate key in collection", name);
+ typedef typename RemoveConst<T>::Type NCT;
- items[name]=new Item<typename RemoveConst<T>::Type>(d);
+ RefPtr<Item<NCT> > i=new Item<NCT>(d);
+ insert_unique(items, i.get());
+ i.release();
}
/**
{
typedef typename RemoveConst<T>::Type NCT;
- ItemMap::const_iterator i=items.find(name);
- if(i==items.end())
- throw KeyError("Item not found in collection", name);
+ ItemBase *i=get_item(items, name);
- const Item<NCT> *item=dynamic_cast<const Item<NCT> *>(i->second);
+ const Item<NCT> *item=dynamic_cast<const Item<NCT> *>(i);
if(!item)
throw TypeError("Type mismatch on item '"+name+"'");
{
typedef typename RemoveConst<T>::Type NCT;
- ItemMap::const_iterator i=items.find(name);
- if(i==items.end())
+ if(!items.count(name))
{
for(ItemCreatorSeq::iterator j=creators.begin(); j!=creators.end(); ++j)
{
return d;
}
}
- throw KeyError("Item not found in collection", name);
}
- const Item<NCT> *item=dynamic_cast<const Item<NCT> *>(i->second);
+ ItemBase *i=get_item(items, name);
+
+ const Item<NCT> *item=dynamic_cast<const Item<NCT> *>(i);
if(!item)
throw TypeError("Type mismatch on item '"+name+"'");
*/
bool contains(const std::string &n) const;
+ /**
+ Returns the name of an item in the collection.
+ */
+ template<typename T>
+ const std::string &get_name(T *d) const
+ {
+ typedef typename RemoveConst<T>::Type NCT;
+
+ for(ItemMap::const_iterator i=items.begin(); i!=items.end(); ++i)
+ if(Item<NCT> *item=dynamic_cast<Item<NCT> *>(i->second))
+ if(item->data==d)
+ return i->first;
+
+ throw KeyError("Item not found in collection");
+ }
+
protected:
/**
Adds a type that can be loaded from datafiles.