From: Robert Feldt <feldt@...>
Date: 2001-03-06T17:12:17+09:00
Subject: [ruby-talk:12104] Re: RCR: replacing 'caller'

Hi,

On Tue, 6 Mar 2001, Yukihiro Matsumoto wrote:

> In message "[ruby-talk:12097] RCR: replacing 'caller'"
>     on 01/03/06, Robert Feldt <feldt@ce.chalmers.se> writes:
> 
> |IMHO, 'caller' would be much more useful if you could know/access the
> |method and object that called you. Therefore I submit this RCR:
> |
> |Replace 'caller' with 'call_stack' returning an array of arrays each with
> |the format:
> |
> |[object_called, method_called_id, args, file_with_call, line_for_call]
> |
> |'call_stack' takes a level parameter (almost) in the same way as 'caller'. 
> 
> Hmm, do you think call_stack is the best name?
> I'd happy to merge this patch if my name concern resolved.
> 
Not sure. 'callers' might work or 'invocation_stack' or 'execution_stack'
as in pickaxe book but I'd prefer 'call_stack'. What sayeth the community?

BTW, on the "Ruby & AOP" thread: 'trap_calls' may be a misnomer since
we're really trapping invocations of methods (AspectJ 
for example distinghuishes between trapping calls
(all calls within the body of a specified method are trapped) and trapping
invocations/"call receptions" (all calls to a
specified method are trapped)). In line with this maybe
we should use 'trap_calls_to'? Or is this "hair splitting"? Naming is
difficult!

/Robert

BTW, I have a problem with irb and latest snapshot. Is it me who have
messed things up or is it a bug?

$ irb
/usr/local/lib/ruby/1.7/irb/ruby-lex.rb:201:in
`initialize_input': uninitialized
 constant EXPR_BEG (NameError)
        from /usr/local/lib/ruby/1.7/irb/ruby-lex.rb:213:in
`each_top_level_stat
ement'
        from /usr/local/lib/ruby/1.7/irb/main.rb:352:in `eval_input'
        from /usr/local/lib/ruby/1.7/irb/main.rb:62:in `start'
        from /usr/local/lib/ruby/1.7/irb/main.rb:61:in `catch'
        from /usr/local/lib/ruby/1.7/irb/main.rb:61:in `start'
        from /usr/local/bin/irb:19

feldt@CHALMERS_1500 /usr/local/lib/ruby/1.7
$ ruby -v
ruby 1.7.0 (2001-03-05) [i686-cygwin]