On Thu, Oct 1, 2009 at 23:42, Igor Stasenko <siguctua@gmail.com> wrote:

How about a visitor pattern?

[ a block of code where you do something that can singal different exceptions �]

� �on: Error do: [:ex |
ex visitWith: self
]

I had to replace self with a class handling the errors:

[ZeroDivide new signal: 'zero']�

�� on: Error do:�

� [:error | error visitWith: (MyErrorHandler new)].

Error>>visitWith: anErrorHandler

�� ^ anErrorHandler handleError: self

MyErrorHandler>>handleError: anError

�� ^anError signal

Error subclass: #AlexError

AlexError>>visitWith: anErrorHandler

�� ^ anErrorHandler handleAlexError: self

AlexError>>handleAlexError: anAlexError

�� ^'Handling an AlexError now.'�