From: Jean-Hugues ROBERT <jean_hugues_robert@...>
Date: 2004-04-28T04:51:53+09:00
Subject: Re: yaml doesn't save Proc members

At 02:49 22/04/2004 +0900, you wrote:
>Dick Davies wrote:
>
>>I thought I'd bugger about with YAML to save and load the tree,
>>but although the arrays all get laid down nicely, the blocks don't.
>>When I call to_yaml, the proc is saved as an empty block,
>>and when YAML.load() tries to pull it back, I get:
>>NoMethodError: allocator undefined for Proc
>
>I've written some code which will allow to serialize Procs under specific 
>conditions. It's limited and won't work with everything even if  it were 
>more complete than my current version.
>
>It might however be able to do what you want, in this case.
>
>Anyway, it's available at 
>http://noegnud.sourceforge.net/flgr/proc_source.rb -- it might be worth a try.
>
>Regards,
>Florian Gross

I had a look at it. It basically uses Proc##inspect() to get the file/line
where the proc is defined. Then, using IRB's Lexer, the proc's definition
is grabbed. Some additional stuff handles cases where proc isn't defined
in a file (if def in some eval() for example).

I liked the code and I am injecting it (after some major refactoring) in my
own code.

Yamlizing Proc/s is for sure cool.

Thanks Florian.


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