Error Class Reference

#include <error.hpp>

Inheritance diagram for Error:

[legend]

Public Member Functions
	Error (void)
	Constructor.
virtual	~Error (void) throw ()
	Error (const Error &aError)
	Copy constructor.
template<typename T >
std::ostream &	operator<< (const T &t)
std::ostream &	operator<< (std::ostream &(*__pf)(std::ostream &))
virtual const char *	what (void) const throw ()
	Returns error message (not thread-safe).
Protected Attributes
std::ostringstream	msgStream
	String containing the error message.
Static Protected Attributes
static std::string	message

---

Detailed Description

An exception class for exception-handling. You can use the ERRORMACRO for throwing exceptions:

    void test( int i ) throw (Error)
    {
      ERRORMACRO( i > 0, Error, ,
                  "Parameter for method test must be greater than zero (but "
                  "was " << i << ")." );
    }
    
    int main(void)
    {
      try {
        test( -5 );
      } catch ( Error &e ) {
        cerr << e.what() << endl;
      };
      return 0;
    }

Mind that the macro uses a variable with the name _e. Make sure, that you don't use this variable-name in any of the macro-arguments!

Date:

Fri Apr 12 2002

Author:

Jan Wedekind (wedesoft@users.sourceforge.net)

Definition at line 54 of file error.hpp.

---

Constructor & Destructor Documentation

Error::Error

(

void

)

[inline]

Constructor.

Definition at line 57 of file error.hpp.

{}

virtual Error::~Error

(

void

)

throw () [inline, virtual]

Definition at line 59 of file error.hpp.

{}

Error::Error

(

const Error &

aError

)

Copy constructor.

Definition at line 25 of file error.cpp.

References msgStream.

00026                                  :
00027   std::exception( _error )
00028 {
00029   msgStream << _error.msgStream.str();
}

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Member Function Documentation

std::ostream& Error::operator<<

(

std::ostream &(*)(std::ostream &)

__pf

)

[inline]

Interface for manipulators. Manipulators such as std::endl and std::hex use these functions in constructs like "Error e; e << std::endl". For more information, see the iomanip header.

Definition at line 69 of file error.hpp.

References msgStream.

    { (*__pf)( msgStream ); return msgStream; }

template<typename T >

std::ostream& Error::operator<<

(

const T &

t

)

[inline]

Definition at line 64 of file error.hpp.

References msgStream.

{ msgStream << t; return msgStream; }

const char * Error::what

(

void

)

const throw () [virtual]

Returns error message (not thread-safe).

Definition at line 31 of file error.cpp.

References message, and msgStream.

Referenced by cli(), gui(), main(), and ODBCStatement::ODBCStatement().

{
  message = msgStream.str();
  return message.c_str();
}

---

Field Documentation

string Error::message [static, protected]

Temporary string to do null-termination. The method what() requires a null-terminated string.

Reimplemented in XSLParseError.

Definition at line 78 of file error.hpp.

Referenced by what().

std::ostringstream Error::msgStream [protected]

String containing the error message.

Definition at line 75 of file error.hpp.

Referenced by Error(), operator<<(), and what().

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The documentation for this class was generated from the following files:

• error.hpp
• error.cpp