Re: [boost] [review] Review of Exception begins today

From: Oliver.Kowalke_at_[hidden]
Date: 2007-09-28 07:27:10

The library provides the macro BOOST_ERROR_INFO. Is it possible to
modify the macro in such a way that successive calls of BOOST_ERROR_INFO
would add the date in a list? This could be used in order to get infos
which parts of the code catched the exception.
Regards, oliver

> > The library provides an exception class that can transport 
> arbitrary 
> > values, thus freeing the user from designing custom 
> exception classes.
> 
> I should clarify that the purpose of the library is not to 
> free users from writing custom exception classes: after all, 
> exceptions are caught by type -- not by value -- so to be 
> able to tell one failure from another, we need to throw 
> different types.
> 
> The idea behind the proposed exception library is to move the 
> burden of storing error codes, file names and other data 
> relevant to a given failure, from the individual exception 
> classes, to a single base class.
> 
> This way the exception class hierarchy can be implemented 
> entirely in terms of empty classes while still being able to 
> transport to the catch site whatever information is necessary 
> to handle a particular exception.
> 
> Emil Dotchevski
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