+ void* old = rv.first->second;
+ rv.first->second = value;
+ return old;
+ }
+}
+
+void* ExtensionItem::unset_raw(Extensible* container)
+{
+ Extensible::ExtensibleStore::iterator i = container->extensions.find(this);
+ if (i == container->extensions.end())
+ return NULL;
+ void* rv = i->second;
+ container->extensions.erase(i);
+ return rv;
+}
+
+void ExtensionManager::Register(ExtensionItem* item)
+{
+ types.insert(std::make_pair(item->key, item));
+}
+
+void ExtensionManager::BeginUnregister(Module* module, std::vector<ExtensionItem*>& list)
+{
+ std::map<std::string, ExtensionItem*>::iterator i = types.begin();
+ while (i != types.end())
+ {
+ std::map<std::string, ExtensionItem*>::iterator me = i++;
+ ExtensionItem* item = me->second;
+ if (item->owner == module)
+ {
+ list.push_back(item);
+ types.erase(me);
+ }
+ }
+}
+
+ExtensionItem* ExtensionManager::GetItem(const std::string& name)
+{
+ std::map<std::string, ExtensionItem*>::iterator i = types.find(name);
+ if (i == types.end())
+ return NULL;
+ return i->second;
+}
+
+void Extensible::doUnhookExtensions(const std::vector<ExtensionItem*>& toRemove)
+{
+ for(std::vector<ExtensionItem*>::const_iterator i = toRemove.begin(); i != toRemove.end(); ++i)
+ {
+ ExtensionItem* item = *i;
+ ExtensibleStore::iterator e = extensions.find(item);
+ if (e != extensions.end())
+ {
+ item->free(e->second);
+ extensions.erase(e);
+ }