xapian-core  1.4.19
derefwrapper.h
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1 
4 /* Copyright (C) 2004,2008,2009,2013,2014 Olly Betts
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 of the
9  * License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
19  * USA
20  */
21 
22 #ifndef XAPIAN_INCLUDED_DEREFWRAPPER_H
23 #define XAPIAN_INCLUDED_DEREFWRAPPER_H
24 
25 #if !defined XAPIAN_IN_XAPIAN_H && !defined XAPIAN_LIB_BUILD
26 # error Never use <xapian/derefwraper.h> directly; include <xapian.h> instead.
27 #endif
28 
29 namespace Xapian {
30 
37 template<typename T>
40 #if __cplusplus >= 201103L
41  // Avoid warnings with newer clang.
42  void operator=(const DerefWrapper_&) = delete;
43 #else
44  void operator=(const DerefWrapper_&);
45 #endif
46 
48  T res;
49 
50  public:
51 #if __cplusplus >= 201103L
52  DerefWrapper_(const DerefWrapper_&) = default;
54 #endif
55 
56  explicit DerefWrapper_(const T &res_) : res(res_) { }
57  const T & operator*() const { return res; }
58 };
59 
60 }
61 
62 #endif // XAPIAN_INCLUDED_DEREFWRAPPER_H
The Xapian namespace contains public interfaces for the Xapian library.
Definition: compactor.cc:80
void operator=(const DerefWrapper_ &)
Don&#39;t allow assignment.
DerefWrapper_(const T &res_)
Definition: derefwrapper.h:56
const T & operator*() const
Definition: derefwrapper.h:57