Chris@101: /* Copyright 2006-2014 Joaquin M Lopez Munoz.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  * (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  *
Chris@16:  * See http://www.boost.org/libs/flyweight for library home page.
Chris@16:  */
Chris@16: 
Chris@101: #ifndef BOOST_FLYWEIGHT_DETAIL_DYN_PERFECT_FWD_HPP
Chris@101: #define BOOST_FLYWEIGHT_DETAIL_DYN_PERFECT_FWD_HPP
Chris@101: 
Chris@101: #if defined(_MSC_VER)
Chris@101: #pragma once
Chris@101: #endif
Chris@101: 
Chris@101: #include <boost/config.hpp>
Chris@101: 
Chris@101: #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
Chris@101: 
Chris@101: #include <boost/preprocessor/arithmetic/add.hpp>
Chris@101: #include <boost/preprocessor/cat.hpp>
Chris@101: #include <boost/preprocessor/repetition/enum.hpp>
Chris@101: #include <boost/preprocessor/repetition/enum_params.hpp>
Chris@101: #include <boost/preprocessor/repetition/repeat_from_to.hpp>
Chris@101: #include <boost/preprocessor/seq/seq.hpp>
Chris@101: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_ARG(z,n,_)                     \
Chris@101: BOOST_PP_CAT(T,n)&& BOOST_PP_CAT(t,n)
Chris@101: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_N_AUX(n,name,body)             \
Chris@101: template<BOOST_PP_ENUM_PARAMS(n,typename T)>                       \
Chris@101: name(BOOST_PP_ENUM(n,BOOST_FLYWEIGHT_PERFECT_FWD_ARG,~))           \
Chris@101: body((FORWARD)(n))
Chris@101: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_N(z,n,data)                    \
Chris@101: BOOST_FLYWEIGHT_PERFECT_FWD_N_AUX(                                 \
Chris@101:   n,BOOST_PP_SEQ_HEAD(data),                                       \
Chris@101:   BOOST_PP_SEQ_HEAD(BOOST_PP_SEQ_TAIL(data)))
Chris@101: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_WITH_ARGS(name,body)           \
Chris@101: BOOST_PP_REPEAT_FROM_TO(                                           \
Chris@101:   1,BOOST_PP_ADD(BOOST_FLYWEIGHT_LIMIT_PERFECT_FWD_ARGS,1),        \
Chris@101:   BOOST_FLYWEIGHT_PERFECT_FWD_N,(name)(body))
Chris@101: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD(name,body)                     \
Chris@101: name()body((ENUM)(0))                                              \
Chris@101: BOOST_FLYWEIGHT_PERFECT_FWD_WITH_ARGS(name,body)
Chris@101: 
Chris@101: #else
Chris@101: 
Chris@101: /* no rvalue refs -> [const] Tn& overloads */
Chris@16: 
Chris@16: #include <boost/preprocessor/arithmetic/add.hpp>
Chris@16: #include <boost/preprocessor/cat.hpp>
Chris@16: #include <boost/preprocessor/repetition/enum.hpp>
Chris@16: #include <boost/preprocessor/repetition/enum_params.hpp>
Chris@16: #include <boost/preprocessor/repetition/repeat.hpp>
Chris@16: #include <boost/preprocessor/repetition/repeat_from_to.hpp>
Chris@16: #include <boost/preprocessor/seq/elem.hpp>
Chris@16: #include <boost/preprocessor/seq/for_each_product.hpp> 
Chris@101: #include <boost/preprocessor/seq/seq.hpp>
Chris@16: #include <boost/preprocessor/seq/size.hpp>
Chris@16: 
Chris@16: #define BOOST_FLYWEIGHT_CONST(b) BOOST_PP_CAT(BOOST_FLYWEIGHT_CONST,b)
Chris@16: #define BOOST_FLYWEIGHT_CONST0
Chris@16: #define BOOST_FLYWEIGHT_CONST1 const
Chris@16: 
Chris@16: /* if mask[n]==0 --> Tn& tn
Chris@16:  * if mask[n]==1 --> const Tn& tn
Chris@16:  */
Chris@16: 
Chris@16: #define BOOST_FLYWEIGHT_PERFECT_FWD_ARG(z,n,mask)                  \
Chris@16: BOOST_FLYWEIGHT_CONST(BOOST_PP_SEQ_ELEM(n,mask))                   \
Chris@16: BOOST_PP_CAT(T,n)& BOOST_PP_CAT(t,n)
Chris@16: 
Chris@16: /* overload accepting size(mask) args, where the template args are
Chris@16:  * marked const or not according to the given mask (a seq of 0 or 1)
Chris@16:  */
Chris@16: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_MASK_AUX(r,name,body,mask)     \
Chris@16: template<BOOST_PP_ENUM_PARAMS(BOOST_PP_SEQ_SIZE(mask),typename T)> \
Chris@101: name(                                                              \
Chris@16:   BOOST_PP_ENUM(                                                   \
Chris@16:     BOOST_PP_SEQ_SIZE(mask),BOOST_FLYWEIGHT_PERFECT_FWD_ARG,mask)) \
Chris@101: body((ENUM)(BOOST_PP_SEQ_SIZE(mask)))
Chris@101: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_MASK(r,data)                   \
Chris@101: BOOST_FLYWEIGHT_PERFECT_FWD_MASK_AUX(                              \
Chris@101:   r,                                                               \
Chris@101:   BOOST_PP_SEQ_ELEM(0,BOOST_PP_SEQ_HEAD(data)),                    \
Chris@101:   BOOST_PP_SEQ_ELEM(1,BOOST_PP_SEQ_HEAD(data)),                    \
Chris@101:   BOOST_PP_SEQ_TAIL(data))
Chris@16: 
Chris@16: #define BOOST_FLYWEIGHT_01(z,n,_) ((0)(1))
Chris@16: 
Chris@16: /* Perfect forwarding overloads accepting 1 to n args */
Chris@16:  
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_N(z,n,data)                    \
Chris@16: BOOST_PP_SEQ_FOR_EACH_PRODUCT(                                     \
Chris@101:   BOOST_FLYWEIGHT_PERFECT_FWD_MASK,                                \
Chris@101:   ((data))                                                         \
Chris@16:   BOOST_PP_REPEAT(n,BOOST_FLYWEIGHT_01,~))
Chris@16: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD_WITH_ARGS(name,body)           \
Chris@16: BOOST_PP_REPEAT_FROM_TO(                                           \
Chris@16:   1,BOOST_PP_ADD(BOOST_FLYWEIGHT_LIMIT_PERFECT_FWD_ARGS,1),        \
Chris@101:   BOOST_FLYWEIGHT_PERFECT_FWD_N,(name)(body))
Chris@16: 
Chris@101: #define BOOST_FLYWEIGHT_PERFECT_FWD(name,body)                     \
Chris@101: name()body((ENUM)(0))                                              \
Chris@101: BOOST_FLYWEIGHT_PERFECT_FWD_WITH_ARGS(name,body)
Chris@16: 
Chris@101: #endif
Chris@101: #endif