Pipe template classes

#if !defined(__TYPELIST_H__0754DF9E_A613_4B58_B619_66E3EE6545C8)
#define __TYPELIST_H__0754DF9E_A613_4B58_B619_66E3EE6545C8

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000


struct NullType{};

template<typename _Item,typename _Tail>
struct TypeList
{
	typedef _Item Item;
	typedef _Tail Tail;
};

#define TYPELIST_1(T1) TypeList<T1,NullType>
#define TYPELIST_2(T1,T2) TypeList<T1,TYPELIST_1(T2) >
#define TYPELIST_3(T1,T2,T3) TypeList<T1, TYPELIST_2(T2,T3) >
#define TYPELIST_4(T1,T2,T3,T4) TypeList<T1, TYPELIST_3(T2,T3,T4) >
#define TYPELIST_5(T1,T2,T3,T4,T5) TypeList<T1, TYPELIST_4(T2,T3,T4,T5) >
#define TYPELIST_6(T1,T2,T3,T4,T5,T6) TypeList<T1, TYPELIST_5(T2,T3,T4,T5,T6) >
#define TYPELIST_7(T1,T2,T3,T4,T5,T6,T7) TypeList<T1, TYPELIST_6(T2,T3,T4,T5,T6,T7) >
#define TYPELIST_8(T1,T2,T3,T4,T5,T6,T7,T8) TypeList<T1, TYPELIST_7(T2,T3,T4,T5,T6,T7,T8) >
#define TYPELIST_9(T1,T2,T3,T4,T5,T6,T7,T8,T9) TypeList<T1, TYPELIST_8(T2,T3,T4,T5,T6,T7,T8,T9) >
#define TYPELIST_10(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10) TypeList<T1, TYPELIST_9(T2,T3,T4,T5,T6,T7,T8,T9,T10) >
#define TYPELIST_11(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11) TypeList<T1, TYPELIST_10(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11) >
#define TYPELIST_12(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12) TypeList<T1, TYPELIST_11(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12) >
#define TYPELIST_13(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13) TypeList<T1, TYPELIST_12(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13) >
#define TYPELIST_14(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14) TypeList<T1, TYPELIST_13(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14) >
#define TYPELIST_15(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15) TypeList<T1, TYPELIST_14(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15) >
#define TYPELIST_16(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16) TypeList<T1, TYPELIST_15(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16) >
#define TYPELIST_17(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17) TypeList<T1, TYPELIST_16(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17) >
#define TYPELIST_18(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18) TypeList<T1, TYPELIST_17(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18) >
#define TYPELIST_19(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19) TypeList<T1, TYPELIST_18(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19) >
#define TYPELIST_20(T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20) TypeList<T1, TYPELIST_19(T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20) >


#endif//#if !defined(__TYPELIST_H__0754DF9E_A613_4B58_B619_66E3EE6545C8)