Cachepolicy (#36)

* Copy CachePolicy implementation from UE5/Release-5.0. Add backwards compatability for clients and upstreams that are using the old protocol.

* Add RefPtr templated move operator and constructor, so that RefPtr<const Foo*> A = std::move(RefPtr<Foo*>()) will do a move.

* Fix broken CachePolicy tests and add tests for new Save/Load.

* Remove TODO comments

* CachePolicy Save/Load Fixes from codereview

* Fix comment to match code change.

* Remove backwards compatibility for CachePolicy change. Convert policy string tokens to PascalCase. Fix tests for new policy text. Change ParseCachePolicy to assert string is non-empty and always succeed.

* Fix release build: use ZEN_WITH_TESTS define

2 files changed, 39 insertions, 0 deletions

diff --git a/zencore/include/zencore/refcount.h b/zencore/include/zencore/refcount.h
index 0324b94cc..afee8536f 100644
--- a/zencore/include/zencore/refcount.h
+++ b/zencore/include/zencore/refcount.h
@@ -94,10 +94,27 @@ public:
 		}
 		return *this;
 	}
+	template<typename OtherType>
+	inline RefPtr& operator=(RefPtr<OtherType>&& Rhs) noexcept
+	{
+		if ((RefPtr*)&Rhs != this)
+		{
+			m_Ref && m_Ref->Release();
+			m_Ref	  = Rhs.m_Ref;
+			Rhs.m_Ref = nullptr;
+		}
+		return *this;
+	}
 	inline RefPtr(RefPtr&& Rhs) noexcept : m_Ref(Rhs.m_Ref) { Rhs.m_Ref = nullptr; }
+	template<typename OtherType>
+	explicit inline RefPtr(RefPtr<OtherType>&& Rhs) noexcept : m_Ref(Rhs.m_Ref)
+	{
+		Rhs.m_Ref = nullptr;
+	}
 
 private:
 	T* m_Ref = nullptr;
+	friend class RefPtr;
 };
 
 /**
diff --git a/zencore/include/zencore/string.h b/zencore/include/zencore/string.h
index 1e8907906..4c378730f 100644
--- a/zencore/include/zencore/string.h
+++ b/zencore/include/zencore/string.h
@@ -413,6 +413,17 @@ private:
 	char m_StringBuffer[N];
 };
 
+template<size_t N>
+class WriteToString : public ExtendableStringBuilder<N>
+{
+public:
+	template<typename... ArgTypes>
+	explicit WriteToString(ArgTypes&&... Args)
+	{
+		(*this << ... << std::forward<ArgTypes>(Args));
+	}
+};
+
 //////////////////////////////////////////////////////////////////////////
 
 extern template class StringBuilderImpl<wchar_t>;
@@ -454,6 +465,17 @@ private:
 	wchar_t m_Buffer[N];
 };
 
+template<size_t N>
+class WriteToWideString : public ExtendableWideStringBuilder<N>
+{
+public:
+	template<typename... ArgTypes>
+	explicit WriteToWideString(ArgTypes&&... Args)
+	{
+		(*this << ... << Forward<ArgTypes>(Args));
+	}
+};
+
 //////////////////////////////////////////////////////////////////////////
 
 void		 Utf8ToWide(const char8_t* str, WideStringBuilderBase& out);