OpenStructure
invalid_handle.hh
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1 //------------------------------------------------------------------------------
2 // This file is part of the OpenStructure project <www.openstructure.org>
3 //
4 // Copyright (C) 2008-2011 by the OpenStructure authors
5 //
6 // This library is free software; you can redistribute it and/or modify it under
7 // the terms of the GNU Lesser General Public License as published by the Free
8 // Software Foundation; either version 3.0 of the License, or (at your option)
9 // any later version.
10 // This library is distributed in the hope that it will be useful, but WITHOUT
11 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12 // FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
13 // details.
14 //
15 // You should have received a copy of the GNU Lesser General Public License
16 // along with this library; if not, write to the Free Software Foundation, Inc.,
17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 //------------------------------------------------------------------------------
19 #ifndef OST_INVALID_HANDLE_HH
20 #define OST_INVALID_HANDLE_HH
21 
22 #include <ost/message.hh>
23 
24 #include <ost/module_config.hh>
25 #include <ost/message.hh>
26 
27 namespace ost {
28 
30 class DLLEXPORT InvalidHandle : public Error {
31 public:
33  : Error("Can not access invalid handle or view")
34  {}
35 };
36 
37 template <typename H>
38 inline void CheckHandleValidity(const H& handle)
39 {
40  if (!handle.IsValid())
41  throw InvalidHandle();
42 }
43 
44 }
45 
46 #endif
47