Exceptions
Hi all, Quick poll regarding modules to provide more OO exception facilities. Whenever I have mucked about with this I have opted to use Graham's Error.pm module. I have found that it cannot handle a return within a catch block though, I haven't spent a lot of time exploring this yet but it is giving a couple of other developers some problems at the moment and making the code less clean than we would like. I'm really looking for two things. 1) If anyone has any ideas about Error.pm or has found a workaround that would be great. I may go and have a look at the code myself if I get some time but if anyone has done this already I would love to hear from you. 2) Suggestions as to which exception mechanism module you would suggest using other than Error.pm, prefereably with reasons. Cheers, N
Re: Exceptions
Sorry if you see duplicates of this, I sent it originally from a non-subscribed address On 23 Sep 2003, at 17:41, Nigel Rantor wrote: Hi all, Quick poll regarding modules to provide more OO exception facilities. Whenever I have mucked about with this I have opted to use Graham's Error.pm module. I may have wrote it initially, but it is now maintained by someone else. I have found that it cannot handle a return within a catch block though, I haven't spent a lot of time exploring this yet but it is giving a couple of other developers some problems at the moment and making the code less clean than we would like. This is because of the way it uses anonymous subs I'm really looking for two things. 1) If anyone has any ideas about Error.pm or has found a workaround that would be great. I may go and have a look at the code myself if I get some time but if anyone has done this already I would love to hear from you. At one time I was going to re-write it as a source filter. Using anonymous subs has all sorts of unwanted side effects, one being memory leaks in earlier versions of perl. Graham. 2) Suggestions as to which exception mechanism module you would suggest using other than Error.pm, prefereably with reasons. Cheers, N
Re: Exceptions
Graham Barr wrote: [snip] Whenever I have mucked about with this I have opted to use Graham's Error.pm module. I may have wrote it initially, but it is now maintained by someone else. Well, I will always think of it as your's honey. :-) I'm really looking for two things. 1) If anyone has any ideas about Error.pm or has found a workaround that would be great. I may go and have a look at the code myself if I get some time but if anyone has done this already I would love to hear from you. At one time I was going to re-write it as a source filter. Using anonymous subs has all sorts of unwanted side effects, one being memory leaks in earlier versions of perl. Hmm...I have never looked into source filters before. How hard do you reckon it would be then, eh? If you already have a bunch of ideas about it then let me know, I might spend the time on it if the current maintainer wants to accept patches. Cheers, Nige
Re: Exceptions
On Thu, 25 Sep 2003, Nigel Rantor wrote: > Graham Barr wrote: > > At one time I was going to re-write it as a source filter. Using > > anonymous subs has all sorts of unwanted side effects, one being memory > > leaks in earlier versions of perl. > > Hmm...I have never looked into source filters before. How hard do you > reckon it would be then, eh? Writing a source filter is like trying to modify the parse tree, but without a parse tree. I much prefer techniques that allow you to hook new nodetypes into the parse tree from the source language, and Perl pretty much has this anyway with exporting symbols into the callee namespace. S. -- Shevekhttp://www.anarres.org/ I am the Borg. http://www.gothnicity.org/
