blob: ad1fdb4ab8eac84215a88ed4a5d3f69a88b814f3 (
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
|
/*=============================================================================
Copyright (c) 2005-2007 Joel de Guzman
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)
==============================================================================*/
#ifndef PHOENIX_DETAIL_LOCAL_REFERENCE_HPP
#define PHOENIX_DETAIL_LOCAL_REFERENCE_HPP
#include <boost/utility/addressof.hpp>
namespace boost { namespace phoenix { namespace detail
{
template <typename T>
struct local_reference
{
typedef T type;
explicit local_reference(T& t): t_(boost::addressof(t)) {}
operator T& () const { return *t_; }
local_reference& operator=(T const& x) { *t_ = x; return *this; }
local_reference const& operator=(T const& x) const { *t_ = x; return *this; }
T& get() const { return *t_; }
T* get_pointer() const { return t_; }
private:
T* t_;
};
template <typename T>
struct unwrap_local_reference
{
typedef T type; // T should be a reference
};
template <typename T>
struct unwrap_local_reference<local_reference<T> >
{
typedef T type; // unwrap the reference; T is a value
};
}}}
#endif
|
Swift