blob: 8b61746af46148568211d2b914c64237c4eea0a1 (
plain)
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
|
/*=============================================================================
Copyright (c) 2006 Eric Niebler
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)
==============================================================================*/
#if !defined(FUSION_SIZE_S_08112006_1141)
#define FUSION_SIZE_S_08112006_1141
#include <boost/mpl/plus.hpp>
#include <boost/mpl/size_t.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <boost/fusion/algorithm/iteration/fold.hpp>
#include <boost/fusion/support/ext_/is_segmented.hpp>
#include <boost/fusion/sequence/intrinsic/ext_/segments.hpp>
namespace boost { namespace fusion
{
///////////////////////////////////////////////////////////////////////////
// calculates the size of any segmented data structure.
template<typename Sequence, bool IsSegmented = traits::is_segmented<Sequence>::value>
struct segmented_size;
namespace detail
{
struct size_plus
{
template<typename Sig>
struct result;
template<typename This, typename State, typename Seq>
struct result<This(State, Seq)>
: mpl::plus<
segmented_size<typename remove_reference<Seq>::type>
, typename remove_reference<State>::type
>
{};
};
}
///////////////////////////////////////////////////////////////////////////
template<typename Sequence, bool IsSegmented>
struct segmented_size
: result_of::fold<
typename result_of::segments<Sequence>::type
, mpl::size_t<0>
, detail::size_plus
>::type
{};
template<typename Sequence>
struct segmented_size<Sequence, false>
: result_of::size<Sequence>
{};
}}
#endif
|
Swift