Dogcows Code - chaz/yoink/blob - src/Moof/Error.hh

   1
   2 /*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
   3 **]  All rights reserved.
   4 *
   5 * vi:ts=4 sw=4 tw=75
   6 *
   7 * Distributable under the terms and conditions of the 2-clause BSD license;
   8 * see the file COPYING for a complete text of the license.
   9 *
  10 **************************************************************************/
  11
  12 #ifndef _MOOF_ERROR_HH_
  13 #define _MOOF_ERROR_HH_
  14
  15 #include <cstring>                      // strncpy
  16 #include <exception>
  17 #include <string>
  18
  19
  20 namespace Mf {
  21
  22
  23 class Error : public std::exception
  24 {
  25 public:
  26
  27         enum Code
  28         {
  29                 UNINITIALIZED = -1,                     // -
  30                 NONE = 0,                                       // -
  31                 ALC_INIT,                                       // description
  32                 FASTEVENTS_INIT,                        // description
  33                 FILE_NOT_FOUND,                         // path of missing file
  34                 OPENAL_INIT,                            // description
  35                 RESOURCE_NOT_FOUND,                     // name of missing resource
  36                 SCRIPT_ERROR,                           // description
  37                 SDL_INIT,                                       // description
  38                 SDL_VIDEOMODE,                          // -
  39                 UNKNOWN_AUDIO_FORMAT,           // name of resource
  40                 UNKNOWN_IMAGE_FORMAT,           // name of resource
  41         };
  42
  43         explicit Error(unsigned code = NONE, const std::string& what = "")
  44         {
  45                 init(code, what);
  46         }
  47         virtual ~Error() throw() {}
  48
  49         void init(unsigned code = NONE, const std::string& what = "")
  50         {
  51                 strncpy(mWhat, what.c_str(), sizeof(mWhat)-1);
  52                 mWhat[sizeof(mWhat)-1] = '\0';
  53                 mCode = code;
  54         }
  55
  56         virtual void raise() const
  57         {
  58                 throw *this;
  59         }
  60
  61         unsigned code() const throw()
  62         {
  63                 return mCode;
  64         }
  65
  66         const char* what() const throw()
  67         {
  68                 return mWhat;
  69         }
  70
  71         operator bool () const
  72         {
  73                 // resolves to true if error code is not NONE
  74                 return mCode != NONE;
  75         }
  76
  77         void reset() throw()
  78         {
  79                 mCode = NONE;
  80                 mWhat[0] = '\0';
  81         }
  82
  83 private:
  84
  85         unsigned        mCode;
  86         char            mWhat[1024];
  87 };
  88
  89
  90 } // namespace Mf
  91
  92 #endif // _MOOF_ERROR_HH_
  93