From 35f8e9dc874dcb04da4466851524362d6097a2dd Mon Sep 17 00:00:00 2001
From: satoren <satoreyo@hotmail.com>
Date: Sat, 6 Aug 2016 02:17:16 +0900
Subject: [PATCH] Tuple implement by myself at C++03 for function overloads.
 #43

this tuple is internal use only.
---
 include/kaguya/config.hpp                |   3 +
 include/kaguya/function_tuple_def.hpp    | 106 +++++++++++++++++++++++
 include/kaguya/native_function.hpp       |  40 ++++-----
 include/kaguya/native_function_cxx03.hpp |   2 +
 include/kaguya/utility.hpp               |   1 -
 include/kaguya/utility_cxx03.hpp         |   1 +
 6 files changed, 132 insertions(+), 21 deletions(-)
 create mode 100644 include/kaguya/function_tuple_def.hpp

diff --git a/include/kaguya/config.hpp b/include/kaguya/config.hpp
index f3034eff..b07c10af 100644
--- a/include/kaguya/config.hpp
+++ b/include/kaguya/config.hpp
@@ -64,12 +64,15 @@ extern "C" {
 #endif
 
 #ifndef KAGUYA_FUNCTION_MAX_ARGS
+///! max argumeent number for binding function. this define used C++03 only.
 #define KAGUYA_FUNCTION_MAX_ARGS 9
 #endif
 #ifndef KAGUYA_FUNCTION_MAX_TUPLE_SIZE
+///! this define used C++03 only.
 #define KAGUYA_FUNCTION_MAX_TUPLE_SIZE 9
 #endif
 #ifndef KAGUYA_FUNCTION_MAX_OVERLOADS
+///! this define used C++03 only.
 #define KAGUYA_FUNCTION_MAX_OVERLOADS KAGUYA_FUNCTION_MAX_TUPLE_SIZE
 #endif
 
diff --git a/include/kaguya/function_tuple_def.hpp b/include/kaguya/function_tuple_def.hpp
new file mode 100644
index 00000000..6e6c96e3
--- /dev/null
+++ b/include/kaguya/function_tuple_def.hpp
@@ -0,0 +1,106 @@
+// Copyright satoren
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+#pragma once
+
+#include <string>
+
+#include "kaguya/config.hpp"
+#include "kaguya/utility.hpp"
+
+namespace kaguya
+{
+	namespace fntuple
+	{
+
+#if KAGUYA_USE_CPP11
+		using std::tuple;
+		using std::get;
+		using std::tuple_element;
+		using std::tuple_size;
+#else
+		using util::null_type;
+		//boost::tuple is max
+#define KAGUYA_PP_STRUCT_TDEF_REP(N) KAGUYA_PP_CAT(typename A,N) = null_type
+#define KAGUYA_PP_STRUCT_TEMPLATE_DEF_REPEAT(N) KAGUYA_PP_REPEAT_ARG(N,KAGUYA_PP_STRUCT_TDEF_REP)
+
+		template<KAGUYA_PP_STRUCT_TEMPLATE_DEF_REPEAT(KAGUYA_PP_INC(KAGUYA_FUNCTION_MAX_OVERLOADS))>
+		struct tuple {
+		};
+
+#define KAGUYA_FUNCTION_TUPLE_ELEMENT(N) KAGUYA_PP_CAT(A,N) KAGUYA_PP_CAT(elem,N);
+#define KAGUYA_FUNCTION_TUPLE_ELEMENT_INIT(N) KAGUYA_PP_CAT(elem,N)(KAGUYA_PP_CAT(a,N))
+#define KAGUYA_FUNCTION_TUPLE_IMPL_DEF(N) \
+		template<KAGUYA_PP_TEMPLATE_DEF_REPEAT(N)>\
+		struct tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)> {\
+			KAGUYA_PP_REPEAT(N,KAGUYA_FUNCTION_TUPLE_ELEMENT)\
+			tuple(KAGUYA_PP_ARG_DEF_REPEAT(N)):KAGUYA_PP_REPEAT_ARG(N,KAGUYA_FUNCTION_TUPLE_ELEMENT_INIT){}\
+		};
+
+
+		KAGUYA_PP_REPEAT_DEF(KAGUYA_FUNCTION_MAX_OVERLOADS, KAGUYA_FUNCTION_TUPLE_IMPL_DEF);
+
+		template<typename Tuple>struct tuple_size;
+
+#define KAGUYA_TUPLE_SIZE_DEF(N) \
+		template< KAGUYA_PP_TEMPLATE_DEF_REPEAT(N)>\
+		struct tuple_size<tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)> >\
+		{\
+			static const size_t value = N;\
+		};\
+
+		KAGUYA_TUPLE_SIZE_DEF(0);
+		KAGUYA_PP_REPEAT_DEF(KAGUYA_FUNCTION_MAX_OVERLOADS, KAGUYA_TUPLE_SIZE_DEF);
+#undef KAGUYA_TUPLE_SIZE_DEF
+
+
+		template<std::size_t remain, class result, bool flag = remain <= 0>
+		struct tuple_element
+		{
+		};
+#define KAGUYA_TUPLE_ELEMENT_DEF(N) \
+		template<std::size_t remain, class arg  KAGUYA_PP_TEMPLATE_DEF_REPEAT_CONCAT(N) >\
+		struct tuple_element<remain, tuple<arg KAGUYA_PP_TEMPLATE_ARG_REPEAT_CONCAT(N)>, true>\
+		{\
+			typedef arg type;\
+		};\
+		template<std::size_t remain, class arg  KAGUYA_PP_TEMPLATE_DEF_REPEAT_CONCAT(N) >\
+		struct tuple_element<remain, tuple<arg KAGUYA_PP_TEMPLATE_ARG_REPEAT_CONCAT(N)>, false>\
+			: tuple_element<remain - 1, tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)> >\
+		{\
+		};\
+
+		KAGUYA_PP_REPEAT_DEF(KAGUYA_FUNCTION_MAX_OVERLOADS, KAGUYA_TUPLE_ELEMENT_DEF);
+
+#undef KAGUYA_TUPLE_SIZE_DEF
+
+		template<size_t S, typename T>struct tuple_get_helper;
+#define KAGUYA_TUPLE_GET_DEF(N) \
+		template<typename T>struct tuple_get_helper<N,T>\
+		{\
+			static typename tuple_element<N-1, T>::type& get(T& t)\
+			{\
+				return t.KAGUYA_PP_CAT(elem, N); \
+			}\
+			static const typename tuple_element<N-1, T>::type& cget(const T& t)\
+			{\
+				return t.KAGUYA_PP_CAT(elem, N); \
+			}\
+		};
+		KAGUYA_PP_REPEAT_DEF(KAGUYA_FUNCTION_MAX_OVERLOADS, KAGUYA_TUPLE_GET_DEF);
+
+		template<size_t S, typename T>
+		typename tuple_element<S, T>::type& get(T& t)
+		{
+			return tuple_get_helper<S + 1, T>::get(t);
+		}
+		template<size_t S, typename T>
+		const typename tuple_element<S, T>::type& get(const T& t)
+		{
+			return tuple_get_helper<S + 1, T>::cget(t);
+		}
+#endif
+	}
+
+}
diff --git a/include/kaguya/native_function.hpp b/include/kaguya/native_function.hpp
index 16dce158..943cb4e7 100644
--- a/include/kaguya/native_function.hpp
+++ b/include/kaguya/native_function.hpp
@@ -16,13 +16,13 @@
 #if KAGUYA_USE_CPP11
 #include "kaguya/native_function_cxx11.hpp"
 #else
-#include "kaguya/preprocess.hpp"
 #include "kaguya/native_function_cxx03.hpp"
 #endif
 
+#include "kaguya/function_tuple_def.hpp"
+
 namespace kaguya
 {
-
 	struct FunctionImpl
 	{
 		virtual int invoke(lua_State *state) = 0;
@@ -566,13 +566,13 @@ namespace kaguya
 
 		template<typename TupleType, std::size_t ...S> int invoke_tuple_impl(lua_State* state, TupleType&& tuple, nativefunction::index_tuple<S...>)
 		{
-			return best_match_invoke(state, std::get<S>(tuple)...);
+			return best_match_invoke(state, fntuple::get<S>(tuple)...);
 		}
 		template<typename TupleType> int invoke_tuple(lua_State* state, TupleType&& tuple)
 		{
 			typedef typename std::decay<TupleType>::type ttype;
 
-			typedef typename nativefunction::index_range<0, std::tuple_size<ttype>::value>::type indexrange;
+			typedef typename nativefunction::index_range<0, fntuple::tuple_size<ttype>::value>::type indexrange;
 
 			return invoke_tuple_impl(state, tuple, indexrange());
 		}
@@ -593,12 +593,12 @@ namespace kaguya
 		}
 		template<typename TupleType, std::size_t ...S> void  push_arg_typename_tuple_impl(lua_State *state, TupleType&& tuple, nativefunction::index_tuple<S...>)
 		{
-			return push_arg_typename(state,std::get<S>(tuple)...);
+			return push_arg_typename(state, fntuple::get<S>(tuple)...);
 		}
 		template<typename TupleType>void push_arg_typename_tuple(lua_State *state, TupleType&& tuple)
 		{
 			typedef typename std::decay<TupleType>::type ttype;
-			typedef typename nativefunction::index_range<0, std::tuple_size<ttype>::value>::type indexrange;
+			typedef typename nativefunction::index_range<0, fntuple::tuple_size<ttype>::value>::type indexrange;
 
 			return push_arg_typename_tuple_impl(state,tuple, indexrange());
 		}
@@ -610,24 +610,24 @@ namespace kaguya
 	namespace detail
 	{
 #define KAGUYA_FUNCTION_SCOREING(N) if (currentbestscore < nativefunction::MAX_OVERLOAD_SCORE) {\
-		int score = nativefunction::compute_function_matching_score(state, standard::get<N - 1>(tuple));\
+		int score = nativefunction::compute_function_matching_score(state, fntuple::get<N - 1>(tuple));\
 		if (currentbestscore < score) {\
 			currentbestscore = score;\
 			currentbestindex = N;\
 		}\
 		}
 #define KAGUYA_FUNCTION_INVOKE(N) if (currentbestindex == N) {\
-			 return nativefunction::call(state,  standard::get<N - 1>(tuple));\
+			 return nativefunction::call(state,  fntuple::get<N - 1>(tuple));\
 		}\
 
 
-#define KAGUYA_ARG_PUSH_TYPENAMES(N)lua_pushliteral(state, "\t\t"); lua_pushstring(state, nativefunction::argTypesName(standard::get<N-1>(tuple)).c_str());lua_pushliteral(state, "\n");
+#define KAGUYA_ARG_PUSH_TYPENAMES(N)lua_pushliteral(state, "\t\t"); lua_pushstring(state, nativefunction::argTypesName(fntuple::get<N-1>(tuple)).c_str());lua_pushliteral(state, "\n");
 #define KAGUYA_TEMPLATE_PARAMETER(N) template<KAGUYA_PP_TEMPLATE_DEF_REPEAT(N)>
 #define KAGUYA_TUPLE_INVOKE_DEF(N) \
 		KAGUYA_TEMPLATE_PARAMETER(N)\
-		int invoke_tuple(lua_State* state, standard::tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)>& tuple)\
+		int invoke_tuple(lua_State* state, fntuple::tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)>& tuple)\
 		{\
-			if(N==1){return nativefunction::call(state,  standard::get<0>(tuple));}\
+			if(N==1){return nativefunction::call(state,  fntuple::get<0>(tuple));}\
 			int32_t currentbestscore = 0;\
 			int32_t currentbestindex = -1;\
 			KAGUYA_PP_REPEAT(N, KAGUYA_FUNCTION_SCOREING);\
@@ -635,7 +635,7 @@ namespace kaguya
 			throw LuaTypeMismatch(); \
 		}\
 		KAGUYA_TEMPLATE_PARAMETER(N)\
-		void push_arg_typename_tuple(lua_State *state,standard::tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)>& tuple)\
+		void push_arg_typename_tuple(lua_State *state,fntuple::tuple<KAGUYA_PP_TEMPLATE_ARG_REPEAT(N)>& tuple)\
 		{\
 			KAGUYA_PP_REPEAT(N, KAGUYA_ARG_PUSH_TYPENAMES);\
 		}\
@@ -666,24 +666,24 @@ namespace kaguya
 
 
 	template<typename T>
-	inline FunctionInvokerType<standard::tuple<T> > function(T f)
+	inline FunctionInvokerType<fntuple::tuple<T> > function(T f)
 	{
 		KAGUYA_STATIC_ASSERT(nativefunction::is_callable<typename traits::decay<T>::type>::value, "argument need callable");
-		return FunctionInvokerType<standard::tuple<T> >(standard::tuple<T>(f));
+		return FunctionInvokerType<fntuple::tuple<T> >(fntuple::tuple<T>(f));
 	}
 
 	template<typename FTYPE, typename T>
-	inline FunctionInvokerType<standard::tuple<standard::function<FTYPE> > > function(T f)
+	inline FunctionInvokerType<fntuple::tuple<standard::function<FTYPE> > > function(T f)
 	{
-		return FunctionInvokerType<standard::tuple<standard::function<FTYPE> > >(standard::tuple<standard::function<FTYPE> >(standard::function<FTYPE>(f)));
+		return FunctionInvokerType<fntuple::tuple<standard::function<FTYPE> > >(fntuple::tuple<standard::function<FTYPE> >(standard::function<FTYPE>(f)));
 	}
 #if KAGUYA_USE_CPP11
 
 
 	template<typename... Functions>
-	FunctionInvokerType<standard::tuple<Functions...> > overload(Functions... fns)
+	FunctionInvokerType<fntuple::tuple<Functions...> > overload(Functions... fns)
 	{
-		return FunctionInvokerType<standard::tuple<Functions...> >(standard::tuple<Functions...>(fns...));
+		return FunctionInvokerType<fntuple::tuple<Functions...> >(fntuple::tuple<Functions...>(fns...));
 	}
 #else
 #define KAGUYA_DEF_TEMPLATE(N) KAGUYA_PP_CAT(typename F,N)
@@ -691,9 +691,9 @@ namespace kaguya
 #define KAGUYA_TUPLE_ARG_DEF(N) KAGUYA_PP_CAT(f,N)
 #define KAGUYA_ARG_DEF(N) KAGUYA_PP_CAT(F,N) KAGUYA_PP_CAT(f,N)
 #define KAGUYA_FOVERLOAD_DEF(N) template<KAGUYA_PP_REPEAT_ARG(N,KAGUYA_DEF_TEMPLATE)>\
-		FunctionInvokerType<standard::tuple<KAGUYA_PP_REPEAT_ARG(N,KAGUYA_TEMPLATE_ARG_DEF)> > overload(KAGUYA_PP_REPEAT_ARG(N,KAGUYA_ARG_DEF))\
+		FunctionInvokerType<fntuple::tuple<KAGUYA_PP_REPEAT_ARG(N,KAGUYA_TEMPLATE_ARG_DEF)> > overload(KAGUYA_PP_REPEAT_ARG(N,KAGUYA_ARG_DEF))\
 		{\
-			typedef typename standard::tuple<KAGUYA_PP_REPEAT_ARG(N,KAGUYA_TEMPLATE_ARG_DEF)> ttype;\
+			typedef typename fntuple::tuple<KAGUYA_PP_REPEAT_ARG(N,KAGUYA_TEMPLATE_ARG_DEF)> ttype;\
 			return FunctionInvokerType<ttype>(ttype(KAGUYA_PP_REPEAT_ARG(N,KAGUYA_TUPLE_ARG_DEF)));\
 		}
 	KAGUYA_PP_REPEAT_DEF(KAGUYA_FUNCTION_MAX_OVERLOADS, KAGUYA_FOVERLOAD_DEF)
diff --git a/include/kaguya/native_function_cxx03.hpp b/include/kaguya/native_function_cxx03.hpp
index 8f463f7b..486575f6 100644
--- a/include/kaguya/native_function_cxx03.hpp
+++ b/include/kaguya/native_function_cxx03.hpp
@@ -10,6 +10,8 @@
 #include "kaguya/utility.hpp"
 #include "kaguya/object.hpp"
 
+#include "kaguya/preprocess.hpp"
+
 namespace kaguya
 {
 	namespace nativefunction
diff --git a/include/kaguya/utility.hpp b/include/kaguya/utility.hpp
index 6d7e03ae..db3ff56f 100644
--- a/include/kaguya/utility.hpp
+++ b/include/kaguya/utility.hpp
@@ -12,7 +12,6 @@
 #if KAGUYA_USE_CPP11
 #include "kaguya/utility_cxx11.hpp"
 #else
-#include "kaguya/preprocess.hpp"
 #include "kaguya/utility_cxx03.hpp"
 #endif
 
diff --git a/include/kaguya/utility_cxx03.hpp b/include/kaguya/utility_cxx03.hpp
index 04f01b1d..ecf591d8 100644
--- a/include/kaguya/utility_cxx03.hpp
+++ b/include/kaguya/utility_cxx03.hpp
@@ -7,6 +7,7 @@
 #include <string>
 
 #include "kaguya/config.hpp"
+#include "kaguya/preprocess.hpp"
 
 namespace kaguya
 {