From fcf83dbf9effab3bd98bad2b83b2468b7eb05cfd Mon Sep 17 00:00:00 2001
From: Tim Foley <tfoley@nvidia.com>
Date: Fri, 9 Jun 2017 11:34:21 -0700
Subject: Initial import of code.

---
 source/core/func.h | 216 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 216 insertions(+)
 create mode 100644 source/core/func.h

(limited to 'source/core/func.h')

diff --git a/source/core/func.h b/source/core/func.h
new file mode 100644
index 000000000..8ec2ba8a5
--- /dev/null
+++ b/source/core/func.h
@@ -0,0 +1,216 @@
+#ifndef CORELIB_FUNC_H
+#define CORELIB_FUNC_H
+
+#if 0
+
+#include "SmartPointer.h"
+
+namespace CoreLib
+{
+	namespace Basic
+	{
+		template<typename TResult, typename... Arguments>
+		class FuncPtr
+		{
+		public:
+			virtual TResult operator()(Arguments...) = 0;
+			virtual bool operator == (const FuncPtr<TResult, Arguments...> *)
+			{
+				return false;
+			}
+			virtual ~FuncPtr() {}
+		};
+
+		template<typename TResult, typename... Arguments>
+		class CdeclFuncPtr : public FuncPtr<TResult, Arguments...>
+		{
+		public:
+			typedef TResult (*FuncType)(Arguments...);
+		private:
+			FuncType funcPtr;
+		public:
+			CdeclFuncPtr(FuncType func)
+				:funcPtr(func)
+			{
+			}
+
+			virtual TResult operator()(Arguments... params) override
+			{
+				return funcPtr(params...);
+			}
+
+			virtual bool operator == (const FuncPtr<TResult, Arguments...> * ptr) override
+			{
+				auto cptr = dynamic_cast<const CdeclFuncPtr<TResult, Arguments...>*>(ptr);
+				if (cptr)
+					return funcPtr == cptr->funcPtr;
+				else
+					return false;
+			}
+		};
+
+		template<typename Class, typename TResult, typename... Arguments>
+		class MemberFuncPtr : public FuncPtr<TResult, Arguments...>
+		{
+		public:
+			typedef TResult (Class::*FuncType)(Arguments...);
+		private:
+			FuncType funcPtr;
+			Class * object;
+		public:
+			MemberFuncPtr(Class * obj, FuncType func)
+				: funcPtr(func), object(obj)
+			{
+			}
+
+			virtual TResult operator()(Arguments... params) override
+			{
+				return (object->*funcPtr)(params...);
+			}
+
+			virtual bool operator == (const FuncPtr<TResult, Arguments...> * ptr) override
+			{
+				auto cptr = dynamic_cast<const MemberFuncPtr<Class, TResult, Arguments...>*>(ptr);
+				if (cptr)
+					return funcPtr == cptr->funcPtr && object == cptr->object;
+				else
+					return false;
+			}
+		};
+
+		template<typename F, typename TResult, typename... Arguments>
+		class LambdaFuncPtr : public FuncPtr<TResult, Arguments...>
+		{
+		private:
+			F func;
+		public:
+			LambdaFuncPtr(const F & _func)
+				: func(_func)
+			{}
+			virtual TResult operator()(Arguments... params) override
+			{
+				return func(params...);
+			}
+			virtual bool operator == (const FuncPtr<TResult, Arguments...> * /*ptr*/) override
+			{
+				return false;
+			}
+		};
+
+		template<typename TResult, typename... Arguments>
+		class Func
+		{
+		private:
+			RefPtr<FuncPtr<TResult, Arguments...>> funcPtr;
+		public:
+			Func(){}
+			Func(typename CdeclFuncPtr<TResult, Arguments...>::FuncType func)
+			{
+				funcPtr = new CdeclFuncPtr<TResult, Arguments...>(func);
+			}
+			template<typename Class>
+			Func(Class * object, typename MemberFuncPtr<Class, TResult, Arguments...>::FuncType func)
+			{
+				funcPtr = new MemberFuncPtr<Class, TResult, Arguments...>(object, func);
+			}
+			template<typename TFuncObj>
+			Func(const TFuncObj & func)
+			{
+				funcPtr = new LambdaFuncPtr<TFuncObj, TResult, Arguments...>(func);
+			}
+			Func & operator = (typename CdeclFuncPtr<TResult, Arguments...>::FuncType func)
+			{
+				funcPtr = new CdeclFuncPtr<TResult, Arguments...>(func);
+				return *this;
+			}
+			template<typename Class>
+			Func & operator = (const MemberFuncPtr<Class, TResult, Arguments...> & func)
+			{
+				funcPtr = new MemberFuncPtr<Class, TResult, Arguments...>(func);
+				return *this;
+			}
+			template<typename TFuncObj>
+			Func & operator = (const TFuncObj & func)
+			{
+				funcPtr = new LambdaFuncPtr<TFuncObj, TResult, Arguments...>(func);
+				return *this;
+			}
+			bool operator == (const Func & f)
+			{
+				return *funcPtr == f.funcPtr.Ptr();
+			}
+			bool operator != (const Func & f)
+			{
+				return !(*this == f);
+			}
+			TResult operator()(Arguments... params)
+			{
+				return (*funcPtr)(params...);
+			}
+		};
+
+		// template<typename... Arguments>
+		// using Procedure = Func<void, Arguments...>;
+
+		template<typename... Arguments>
+		class Procedure : public Func<void, Arguments...>
+		{
+		private:
+			RefPtr<FuncPtr<void, Arguments...>> funcPtr;
+		public:
+			Procedure(){}
+			Procedure(const Procedure & proc)
+			{
+				funcPtr = proc.funcPtr;
+			}
+			Procedure(typename CdeclFuncPtr<void, Arguments...>::FuncType func)
+			{
+				funcPtr = new CdeclFuncPtr<void, Arguments...>(func);
+			}
+			template<typename Class>
+			Procedure(Class * object, typename MemberFuncPtr<Class, void, Arguments...>::FuncType func)
+			{
+				funcPtr = new MemberFuncPtr<Class, void, Arguments...>(object, func);
+			}
+			template<typename TFuncObj>
+			Procedure(const TFuncObj & func)
+			{
+				funcPtr = new LambdaFuncPtr<TFuncObj, void, Arguments...>(func);
+			}
+			Procedure & operator = (typename CdeclFuncPtr<void, Arguments...>::FuncType func)
+			{
+				funcPtr = new CdeclFuncPtr<void, Arguments...>(func);
+				return *this;
+			}
+			template<typename Class>
+			Procedure & operator = (const MemberFuncPtr<Class, void, Arguments...> & func)
+			{
+				funcPtr = new MemberFuncPtr<Class, void, Arguments...>(func);
+				return *this;
+			}
+			template<typename TFuncObj>
+			Procedure & operator = (const TFuncObj & func)
+			{
+				funcPtr = new LambdaFuncPtr<TFuncObj, void, Arguments...>(func);
+				return *this;
+			}
+			Procedure & operator = (const Procedure & proc)
+			{
+				funcPtr = proc.funcPtr;
+			}
+			void Clear()
+			{
+				funcPtr = nullptr;
+			}
+			void operator()(Arguments... params)
+			{
+				if (funcPtr)
+					(*funcPtr)(params...);
+			}
+		};
+	}
+}
+
+#endif
+
+#endif
\ No newline at end of file
-- 
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