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source: code/trunk/src/external/loki/RefToValue.h @ 12192

Last change on this file since 12192 was 7266, checked in by rgrieder, 14 years ago

Moved Loki library files to separate loki folder in externals.
Also added TypeManip.h (now used in Convert.h) and static_check.h.

  • Property svn:eol-style set to native
File size: 2.0 KB
RevLine 
[3235]1////////////////////////////////////////////////////////////////////////////////
2// The Loki Library
3// Copyright (c) 2006 Richard Sposato
4// Copyright (c) 2006 Peter Kümmel
5// Permission to use, copy, modify, distribute and sell this software for any
6//     purpose is hereby granted without fee, provided that the above copyright
7//     notice appear in all copies and that both that copyright notice and this
8//     permission notice appear in supporting documentation.
9// The authors make no representations about the
10//     suitability of this software for any purpose. It is provided "as is"
11//     without express or implied warranty.
12////////////////////////////////////////////////////////////////////////////////
13#ifndef LOKI_REFTOVALUE_INC_
14#define LOKI_REFTOVALUE_INC_
15
16// $Id: RefToValue.h 751 2006-10-17 19:50:37Z syntheticpp $
17
18
19namespace Loki
20{
21
22    ////////////////////////////////////////////////////////////////////////////////
23    ///  \class RefToValue
24    ///
25    ///  \ingroup SmartPointerGroup
26    ///  Transports a reference as a value
27    ///  Serves to implement the Colvin/Gibbons trick for SmartPtr/ScopeGuard
28    ////////////////////////////////////////////////////////////////////////////////
29
30    template <class T>
31    class RefToValue
32    {   
33    public:
34   
35        RefToValue(T& ref) : ref_(ref) 
36        {}
37
38        RefToValue(const RefToValue& rhs) : ref_(rhs.ref_)
39        {}
40
41        operator T& () const 
42        {
43            return ref_;
44        }
45
46    private:
47        // Disable - not implemented
48        RefToValue();
49        RefToValue& operator=(const RefToValue&);
50       
51        T& ref_;
52    };
53
54
55    ////////////////////////////////////////////////////////////////////////////////
56    ///  \ingroup ExceptionGroup
57    ///  RefToValue creator.
58    ////////////////////////////////////////////////////////////////////////////////
59
60    template <class T>
61    inline RefToValue<T> ByRef(T& t)
62    {
63        return RefToValue<T>(t);
64    }   
65   
66}
67
68
69#endif // end file guardian
70
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