オーバーロード自動生成ソース

追記：発表の資料にもあった例ですが、make_tupleだと別に非const参照をオーバーロードする必要はないので、型Tのコンストラクタの引数を受けとって、その引数から作ったTの値を保持するmy_smart_ptrを返す関数と変更しておきました。追記ここまで

#include <boost/preprocessor/arithmetic/inc.hpp>
#include <boost/preprocessor/comparison/greater.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/repeat.hpp>
#include <boost/preprocessor/repetition/repeat_from_to.hpp>
#include <boost/preprocessor/seq/enum.hpp>
#include <boost/preprocessor/seq/size.hpp>
#include <boost/preprocessor/seq/seq.hpp>
#include <boost/preprocessor/seq/for_each_product.hpp>
#include <boost/preprocessor/tuple/rem.hpp>

#define DEF_MAKE_MY_SMART_OVERLOADS_OP(z, n, data) \
  BOOST_PP_SEQ_FOR_EACH_PRODUCT(DEF_MAKE_MY_SMART, ((n)) BOOST_PP_REPEAT(n, MAKE_CONST_SEQ, _))

#define DEF_MAKE_MY_SMART(r, seq) \
  DEF_MAKE_MY_SMART_I(BOOST_PP_SEQ_HEAD(seq), BOOST_PP_SEQ_TAIL(seq))
#define DEF_MAKE_MY_SMART_I(n, seq) \
  template<typename T , BOOST_PP_ENUM_PARAMS(n, typename T)> \
  my_smart_ptr<T> make_my_smart(BOOST_PP_FOR((n, 0, seq), PARAMS_P, PARAMS_OP, DECL_PARAMS)) { \
    return my_smart_ptr<T>(new T(BOOST_PP_ENUM_PARAMS(n, param))); \
  }

#define PARAMS_P(r, state) PARAMS_P_I state
#define PARAMS_P_I(n, i, seq) BOOST_PP_GREATER(n, i)

#define PARAMS_OP(r, state) PARAMS_OP_I state
#define PARAMS_OP_I(n, i, seq) \
  (n, BOOST_PP_INC(i), BOOST_PP_SEQ_TAIL(seq))

#define DECL_PARAMS(r, state) DECL_PARAMS_I state
#define DECL_PARAMS_I(n, i, seq) \
  BOOST_PP_COMMA_IF(i) T ## i BOOST_PP_SEQ_HEAD(seq) & param ## i

#define MAKE_CONST_SEQ(z, n, _) (()(const))

BOOST_PP_REPEAT_FROM_TO(1, 6, DEF_MAKE_MY_SMART_OVERLOADS_OP, _)