exception.h

功能非常强的写日志程序

/*
 * Copyright 2003,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _LOG4CXX_HELPERS_EXCEPTION_H
#define _LOG4CXX_HELPERS_EXCEPTION_H

#include <log4cxx/helpers/tchar.h>

namespace log4cxx
{
	namespace helpers
	{
		/** The class Exception and its subclasses indicate conditions that a
		reasonable application might want to catch.
		*/
		class LOG4CXX_EXPORT Exception
		{
		public:
			Exception() {}
			Exception(const String& message): message(message) {}
			inline const String& getMessage() { return message; }
			
		protected:
			String message;
			
	}; // class Exception

		/** RuntimeException is the parent class of those exceptions that can be
		thrown during the normal operation of the process.
		*/
		class LOG4CXX_EXPORT RuntimeException : public Exception
		{
		public:
			RuntimeException() {}
			RuntimeException(const String& message)
			 : Exception(message) {}
		}; // class RuntimeException

		/** Thrown when an application attempts to use null in a case where an
		object is required.
		*/
		class LOG4CXX_EXPORT  NullPointerException : public RuntimeException
		{
		public:
			NullPointerException() {}
			NullPointerException(const String& message)
			 : RuntimeException(message) {}
		}; // class NullPointerException

		/** Thrown to indicate that a method has been passed 
		an illegal or inappropriate argument.*/
		class LOG4CXX_EXPORT IllegalArgumentException : public RuntimeException
		{
		public:
			IllegalArgumentException(const String& message)
			 : RuntimeException(message) {}
		}; // class IllegalArgumentException
		
		/** Signals that an I/O exception of some sort has occurred. This class
		is the general class of exceptions produced by failed or interrupted
		I/O operations.
		*/
		class LOG4CXX_EXPORT IOException : public Exception
		{
		};
	}  // namespace helpers
}; // namespace log4cxx

#endif // _LOG4CXX_HELPERS_EXCEPTION_H