From: daz <dooby@...10.karoo.co.uk>
Date: 2005-10-05T23:21:52+09:00
Subject: Re: caller


limux... wrote:
>
> the follow code is in the mkmf.rb:
>
> *def checking_for(m)
>   f = caller[0][/in `(.*)'$/, 1] and f << ": " #` for vim
>   m = "checking for #{m}... "
>   message "%s", m
>   a = r = nil
>   Logging::postpone do
>     r = yield
>     a = r ? "yes\n" : "no\n"
>     "#{f}#{m}-------------------- #{a}\n"
>   end
>   message(a)
>   Logging::message "--------------------\n\n"
>   r
> end
>
> *what meaning of the '*f = caller[0][/in `(.*)'$/, 1] and f << ": " #` for vim*'?
>


def metha
 methb
end

def methb
 sep; p(( f = caller ))     # Execution history (Array)
 sep; p(( f = caller[0] ))  # Take the most recent entry

 # Take the first group from a string match result (else nil)  # See [1]
 sep; p(( f = caller[0][/in `(.*)'$/, 1] ))

 # If there was a match, append ': ' to it
 sep; p(( f = caller[0][/in `(.*)'$/, 1] and f << ": " ))

 # The rest is a comment
end

def sep; puts('-' * 30) end

metha

##-> ------------------------------
##-> ["C:/TEMP/rbB105.TMP:2:in `metha'", "C:/TEMP/rbB105.TMP:17"]
##-> ------------------------------
##-> "C:/TEMP/rbB105.TMP:2:in `metha'"
##-> ------------------------------
##-> "metha"
##-> ------------------------------
##-> "metha: "

[1] str[regexp, fixnum]
    http://www.ruby-doc.org/core/classes/String.html#M001373


daz