error_fwd.h

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00001 
00004 /*
00005  * Copyright © 2000, 2001 Sofus Mortensen
00006  *
00007  * This material is provided "as is", with absolutely no warranty 
00008  * expressed or implied. Any use is at your own risk. Permission to 
00009  * use or copy this software for any purpose is hereby granted without 
00010  * fee, provided the above notices are retained on all copies. 
00011  * Permission to modify the code and to distribute modified code is 
00012  * granted, provided the above notices are retained, and a notice that 
00013  * the code was modified is included with the above copyright notice. 
00014  *
00015  * This header is part of comet.
00016  * http://www.lambdasoft.dk/comet
00017  */
00018 
00019 #ifndef COMET_ERROR_FWD_H
00020 #define COMET_ERROR_FWD_H
00021  
00022 #include <comet/config.h>
00023 
00024 #include <stdexcept>
00025 #include <wtypes.h>
00026 
00027 #pragma warning(push)
00028 #pragma warning(disable : 4290)
00029 
00030 namespace comet {
00031         template<typename Itf> class com_ptr;
00032         class bstr_t;
00033 
00034         class com_error;
00038         namespace impl {
00039                 class raise_exception_t
00040                 {
00041                 public:
00042                         // Raising a std::exception
00043                         // inline void operator()(const std::exception& err) const;
00044                         
00045                         // Raising an HRESULT with a message
00046                         inline void operator()(const bstr_t& msg, HRESULT hr = E_FAIL) const;
00047                         
00048                         // Raising an HRESULT
00049                         inline void operator()(HRESULT hr) const;
00050                 }; 
00051 
00052         }
00053         
00055 
00071         static impl::raise_exception_t raise_exception;
00072    
00074 
00079     inline HRESULT operator|(HRESULT hr, const impl::raise_exception_t&)
00080         {if (FAILED(hr)) raise_exception(hr); return hr; }
00081 
00102         template<bool OVERRIDE>
00103         struct throw_error_handler
00104         {
00106                 static inline void throw_error(HRESULT hr, const com_ptr<IErrorInfo> &ei);
00107         };
00109 }
00110 
00111 #pragma warning(pop)
00112 
00113 #endif