From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 7 May 2023 12:27:46 +0000 (+0300)
Subject: Add a generation number to Reflector
X-Git-Url: https://git.tdb.fi/?a=commitdiff_plain;h=486d7f61820eaf066476d284c881e64579ee839c;p=libs%2Fgame.git

Add a generation number to Reflector
---

diff --git a/source/game/reflection.h b/source/game/reflection.h
index 7b75541..d42c860 100644
--- a/source/game/reflection.h
+++ b/source/game/reflection.h
@@ -65,6 +65,9 @@ public:
 
 	template<typename T>
 	bool has_polymorphic_base() const { return dynamic_cast<const RootedPolymorphism<T> *>(polymorphism.get()); }
+
+protected:
+	void increment_generation() const;
 };
 
 
@@ -88,8 +91,11 @@ private:
 
 class MSPGAME_API Reflector
 {
+	friend class ClassBase;
+
 private:
 	std::vector<std::unique_ptr<ClassBase>> classes;
+	unsigned generation = 0;
 
 	std::vector<std::unique_ptr<ClassBase>>::const_iterator lower_bound(const std::type_index &) const;
 
@@ -104,6 +110,8 @@ public:
 
 	template<typename F>
 	std::vector<ClassBase *> find_classes_if(F &&) const;
+
+	unsigned get_generation() const { return generation; }
 };
 
 
@@ -118,7 +126,10 @@ inline Class<T> &Reflector::get_or_create_class()
 	std::type_index type = typeid(T);
 	auto i = lower_bound(type);
 	if(i==classes.end() || (*i)->get_type()!=type)
+	{
 		i = classes.emplace(i, std::make_unique<Class<T>>(std::ref(*this)));
+		++generation;
+	}
 	return static_cast<Class<T> &>(*i->get());
 }
 
@@ -152,6 +163,11 @@ inline bool ClassBase::is_instance(const T &obj) const
 	return false;
 }
 
+inline void ClassBase::increment_generation() const
+{
+	++reflector.generation;
+}
+
 
 template<typename T>
 template<typename B>
@@ -180,7 +196,11 @@ inline void Class<T>::check_bases(const T &obj)
 			++i;
 	}
 
-	bases = std::move(candidate_bases);
+	if(candidate_bases!=bases)
+	{
+		bases = std::move(candidate_bases);
+		increment_generation();
+	}
 }
 
 } // namespace Reflection