1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/* 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
|