You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
75 lines
2.7 KiB
75 lines
2.7 KiB
/* Copyright 2006-2008 Joaquin M Lopez Munoz. |
|
* 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) |
|
* |
|
* See http://www.boost.org/libs/flyweight for library home page. |
|
*/ |
|
|
|
/* no include guards */ |
|
|
|
#include <boost/preprocessor/arithmetic/add.hpp> |
|
#include <boost/preprocessor/cat.hpp> |
|
#include <boost/preprocessor/repetition/enum.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/elem.hpp> |
|
#include <boost/preprocessor/seq/for_each_product.hpp> |
|
#include <boost/preprocessor/seq/size.hpp> |
|
|
|
#define BOOST_FLYWEIGHT_CONST(b) BOOST_PP_CAT(BOOST_FLYWEIGHT_CONST,b) |
|
#define BOOST_FLYWEIGHT_CONST0 |
|
#define BOOST_FLYWEIGHT_CONST1 const |
|
|
|
/* if mask[n]==0 --> Tn& tn |
|
* if mask[n]==1 --> const Tn& tn |
|
*/ |
|
|
|
#define BOOST_FLYWEIGHT_PERFECT_FWD_ARG(z,n,mask) \ |
|
BOOST_FLYWEIGHT_CONST(BOOST_PP_SEQ_ELEM(n,mask)) \ |
|
BOOST_PP_CAT(T,n)& BOOST_PP_CAT(t,n) |
|
|
|
/* overload accepting size(mask) args, where the template args are |
|
* marked const or not according to the given mask (a seq of 0 or 1) |
|
*/ |
|
|
|
#define BOOST_FLYWEIGHT_PERFECT_FWD(r,mask) \ |
|
template<BOOST_PP_ENUM_PARAMS(BOOST_PP_SEQ_SIZE(mask),typename T)> \ |
|
BOOST_FLYWEIGHT_PERFECT_FWD_NAME( \ |
|
BOOST_PP_ENUM( \ |
|
BOOST_PP_SEQ_SIZE(mask),BOOST_FLYWEIGHT_PERFECT_FWD_ARG,mask)) \ |
|
BOOST_FLYWEIGHT_PERFECT_FWD_BODY(BOOST_PP_SEQ_SIZE(mask)) |
|
|
|
#define BOOST_FLYWEIGHT_01(z,n,_) ((0)(1)) |
|
|
|
/* Perfect forwarding overloads accepting 1 to n args */ |
|
|
|
#define BOOST_FLYWEIGHT_PERFECT_FWDS_N(z,n,_) \ |
|
BOOST_PP_SEQ_FOR_EACH_PRODUCT( \ |
|
BOOST_FLYWEIGHT_PERFECT_FWD, \ |
|
BOOST_PP_REPEAT(n,BOOST_FLYWEIGHT_01,~)) |
|
|
|
#define BOOST_FLYWEIGHT_PERFECT_FWD_OVERLOADS \ |
|
BOOST_PP_REPEAT_FROM_TO( \ |
|
1,BOOST_PP_ADD(BOOST_FLYWEIGHT_LIMIT_PERFECT_FWD_ARGS,1), \ |
|
BOOST_FLYWEIGHT_PERFECT_FWDS_N,~) |
|
|
|
/* generate the overloads */ |
|
|
|
BOOST_FLYWEIGHT_PERFECT_FWD_OVERLOADS |
|
|
|
/* clean up */ |
|
|
|
#undef BOOST_FLYWEIGHT_PERFECT_FWD_OVERLOADS |
|
#undef BOOST_FLYWEIGHT_01 |
|
#undef BOOST_FLYWEIGHT_PERFECT_FWD |
|
#undef BOOST_FLYWEIGHT_PERFECT_FWD_ARG |
|
#undef BOOST_FLYWEIGHT_CONST1 |
|
#undef BOOST_FLYWEIGHT_CONST0 |
|
#undef BOOST_FLYWEIGHT_CONST |
|
|
|
/* user supplied argument macros */ |
|
|
|
#undef BOOST_FLYWEIGHT_PERFECT_FWD_BODY |
|
#undef BOOST_FLYWEIGHT_PERFECT_FWD_NAME
|
|
|