+};
+
+/** This class can be used on its own to represent an exception, or derived to represent a module-specific exception.
+ * When a module whishes to abort, e.g. within a constructor, it should throw an exception using ModuleException or
+ * a class derived from ModuleException. If a module throws an exception during its constructor, the module will not
+ * be loaded. If this happens, the error message returned by ModuleException::GetReason will be displayed to the user
+ * attempting to load the module, or dumped to the console if the ircd is currently loading for the first time.
+ */
+class CoreExport CoreException : public std::exception
+{
+ protected:
+ /** Holds the error message to be displayed
+ */
+ const std::string err;
+ /** Source of the exception
+ */
+ const std::string source;
+
+ public:
+ /** This constructor can be used to specify an error message before throwing.
+ * @param message Human readable error message
+ */
+ CoreException(const std::string &message) : err(message), source("The core") {}
+ /** This constructor can be used to specify an error message before throwing,
+ * and to specify the source of the exception.
+ * @param message Human readable error message
+ * @param src Source of the exception
+ */
+ CoreException(const std::string &message, const std::string &src) : err(message), source(src) {}
+ /** This destructor solves world hunger, cancels the world debt, and causes the world to end.
+ * Actually no, it does nothing. Never mind.
+ * @throws Nothing!
+ */
+ virtual ~CoreException() throw() {};
+ /** Returns the reason for the exception.
+ * @return Human readable description of the error
+ */
+ const std::string& GetReason() const { return err; }
+
+ /** Returns the source of the exception
+ * @return Source of the exception
+ */
+ const std::string& GetSource() const { return source; }
+};
+
+class Module;
+class CoreExport ModuleException : public CoreException
+{
+ public:
+ /** This constructor can be used to specify an error message before throwing.
+ */
+ ModuleException(const std::string &message, Module* me = NULL);
+};
+
+typedef const reference<Module> ModuleRef;
+
+enum ServiceType {
+ /** is a Command */
+ SERVICE_COMMAND,
+ /** is a ModeHandler */
+ SERVICE_MODE,
+ /** is a metadata descriptor */
+ SERVICE_METADATA,
+ /** is a data processing provider (MD5, SQL) */
+ SERVICE_DATA,
+ /** is an I/O hook provider (SSL) */
+ SERVICE_IOHOOK
+};