From: Robert Klemme <shortcutter@...>
Date: 2006-12-04T20:40:09+09:00
Subject: Re: Getting the source code of a block

On 04.12.2006 12:20, Peter Szinek wrote:
> Is the following thing possible somehow?
> 
> def foo(&bar)
>   do_something_with(bar)
> end
> 
> baz = foo { puts 'hello'; i +=1; fluff(ork) }
> 
> now, baz should contain the string
> 
> "puts 'hello'; i +=1; fluff(ork)"
> 
> since I need to do this in the same file where I am defining the block, 
> I could get it using __FILE__ +  some  regexps - just asking if there is 
> some more elegant way...

No.  Alternatively you could cook your own

irb(main):001:0> def pproc(code)
irb(main):002:1>   block = eval("lambda {#{code}}")
irb(main):003:1>   class <<block;self;end.send(:define_method, 
:source_code) { code }
irb(main):004:1>   block
irb(main):005:1> end
=> nil
irb(main):006:0> x = pproc '|a,b| a+b'
=> #<Proc:0x003ba8bc@(eval):1>
irb(main):007:0> x[10,20]
=> 30
irb(main):008:0> x.source_code
=> "|a,b| a+b"

Where do you need that for?

Kind regards

	robert