IMP  2.0.1
The Integrative Modeling Platform
SetLogState.h
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1 /**
2  * \file IMP/base/SetLogState.h \brief Logging and error reporting support.
3  *
4  * Copyright 2007-2013 IMP Inventors. All rights reserved.
5  *
6  */
7 
8 #ifndef IMPBASE_SET_LOG_STATE_H
9 #define IMPBASE_SET_LOG_STATE_H
10 
11 #include <IMP/base/base_config.h>
12 #include "enums.h"
13 #include "raii_macros.h"
14 #include "value_macros.h"
15 #include <IMP/base/nullptr.h>
16 
17 IMPBASE_BEGIN_NAMESPACE
18 class Object;
19 
20 //! A class to change and restore log state
21 /**
22  To use, create an instance of this class with the log level you
23  want. When it goes out of scope, it will restore the old level.
24 
25 
26  \note This will not keep objects alive, make sure there is also some
27  other ref-counted pointer to them.
28 
29  \ingroup logging
30  */
31 class IMPBASEEXPORT SetLogState: public base::RAII
32 {
33  LogLevel level_;
34  Object* obj_;
35  void do_set(Object *o, LogLevel l);
36  void do_reset();
37  void do_show(std::ostream &out) const;
38 public:
40  {level_= DEFAULT; obj_=nullptr;},
41  {
42  do_set(o, l);
43  },
44  {
45  do_reset();
46  }, do_show(out););
47 
48  //! Construct it with the desired level and target
50  void set(LogLevel l);
51 };
52 
53 
55 
56 IMPBASE_END_NAMESPACE
57 
58 #endif /* IMPBASE_SET_LOG_STATE_H */