Changeset 3196 for code/trunk/src/util/Exception.h

Timestamp:

Jun 20, 2009, 9:20:47 AM (16 years ago)

Author:

rgrieder

Message:

Merged pch branch back to trunk.

Location:

code/trunk

Files:

• . (modified) (1 prop)
• src/util/Exception.h (modified) (5 diffs)

code/trunk/src/util/Exception.h

@@ -30 +30 @@
 @file
 @brief
-    Declaration of the Exception class.
+    Declaration of facilities to handle exceptions.
 */
 
@@ -38 +38 @@
 #include "UtilPrereqs.h"
 
+#include <exception>
+#include <sstream>
 #include <string>
-#include <exception>
-#include <cassert>
 #include "Debug.h"
 
 namespace orxonox
 {
+    /**
+    @brief
+        Base class for all exceptions (derived from std::exception).
+    @details
+        This class provides support for information about the file, the line
+        and the function the error occured.
+    */
     class _UtilExport Exception : public std::exception
     {
     public:
-
-        Exception(const std::string& description, int lineNumber,
+        /**
+        @brief
+            Creates the exception but doesn't yet compose the full descrption (because of the virtual functions)
+        @param description
+            Exception description as string. This message is supposed to help developers!
+        */
+        Exception(const std::string& description, unsigned int lineNumber,
                   const char* filename, const char* functionName);
+        //! Simplified constructor with just a description. If you need more, use the other one.
         Exception(const std::string& description);
 
-        /// Needed for  compatibility with std::exception (from Ogre::Exception)
+        //! Needed for compatibility with std::exception
         virtual ~Exception() throw() { }
 
+        //! Returns a full description with type, line, file and function
         virtual const std::string& getFullDescription() const;
+        //! Returns the string name of the exception type
         virtual std::string        getTypeName()        const = 0;
+        //! Returns the short developer written exception
         virtual const std::string& getDescription()     const { return this->description_; }
-        virtual const int          getLineNumber()      const { return this->lineNumber_; }
+        //! Returns the line number on which the exception occurred.
+        virtual const unsigned int getLineNumber()      const { return this->lineNumber_; }
+        //! Returns the function in which the exception occurred.
         virtual const std::string& getFunctionName()    const { return this->functionName_; }
+        //! Returns the filename in which the exception occurred.
+        virtual const std::string& getFilename()        const { return this->filename_; }
 
-        /// Override std::exception::what (from Ogre::Exception)
+        //! Returns a full description of the error.
         const char* what() const throw() { return getFullDescription().c_str(); }
 
     protected:
-        std::string description_;
-        int lineNumber_;
-        std::string functionName_;
-        std::string filename_;
+        std::string description_;             //!< User typed text about why the exception occurred
+        unsigned int lineNumber_;             //!< Line on which the exception occurred
+        std::string functionName_;            //!< Function (including namespace and class) where the exception occurred
+        std::string filename_;                //!< File where the exception occurred
         // mutable because "what()" is a const method
-        mutable std::string fullDescription_;
+        mutable std::string fullDescription_; //!< Full description with line, file and function
     };
 
-
+//! Creates a new type of exception that inherits from tracker::Exception
 #define CREATE_ORXONOX_EXCEPTION(ExceptionName)                                     \
     class ExceptionName##Exception : public Exception                               \
     {                                                                               \
     public:                                                                         \
-        ExceptionName##Exception(const std::string& description, int lineNumber,    \
-                  const char* filename, const char* functionName)                   \
-                  : Exception(description, lineNumber, filename, functionName)      \
+        ExceptionName##Exception(const std::string& description,                    \
+                unsigned int lineNumber, const char* filename,                      \
+                const char* functionName)                                           \
+            : Exception(description, lineNumber, filename, functionName)            \
         { }                                                                         \
                                                                                     \
         ExceptionName##Exception(const std::string& description)                    \
-                  : Exception(description)                                          \
+            : Exception(description)                                                \
         { }                                                                         \
                                                                                     \
@@ -91 +112 @@
                                                                                     \
         std::string getTypeName() const { return #ExceptionName; }                  \
-    };
+    }
 
     // Creates all possible exception types.
     // If you want to add a new type, simply copy and adjust a new line here.
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
     CREATE_ORXONOX_EXCEPTION(General);
     CREATE_ORXONOX_EXCEPTION(FileNotFound);
@@ -106 +128 @@
     CREATE_ORXONOX_EXCEPTION(NoGraphics);
     CREATE_ORXONOX_EXCEPTION(AbortLoading);
-}
+#endif
 
     /**
     @brief
-        Helper function that creates an exception, displays the message, but doesn't throw it.
+        Helper function that forwards an exception and displays the message.
+    @details
+        This is necessary because only when using 'throw' the objects storage is managed.
     */
     template <class T>
-    inline const T& InternalHandleException(const T& exception)
+    inline const T& exceptionThrowerHelper(const T& exception)
     {
         // let the catcher decide whether to display the message below level 4
@@ -120 +144 @@
     }
 
-#define ThrowException(type, description) \
-    throw InternalHandleException(type##Exception(description, __LINE__, __FILE__, __FUNCTIONNAME__))
+/**
+@brief
+    Throws an exception and logs a message beforehand.
+@param type
+    Type of the exception as literal (General, Initialisation, etc.)
+@param description
+    Exception description as string
+*/
+#define ThrowException(type, description, ...) \
+    throw orxonox::exceptionThrowerHelper(type##Exception(static_cast<std::ostringstream&>(std::ostringstream().flush() << description).str(), __LINE__, __FILE__, __FUNCTIONNAME__))
 
-    // define an assert macro that can display a message
-#ifndef NDEBUG
-#define OrxAssert(Assertion, ErrorMessage) \
-    Assertion ? ((void)0) : (void)(orxonox::OutputHandler::getOutStream().setOutputLevel(ORX_ERROR) << ErrorMessage << std::endl); \
-    assert(Assertion)
-#else
-#define OrxAssert(condition, errorMessage)  ((void)0)
-#endif
+} /* namespace orxonox */
 
 #endif /* _Exception_H__ */