Im a regular abuser of AUTOLOAD, but would like to create customized routines for each invocation - essentially munging the method-name so its unique for each caller.

The following creates anonymous subroutines, then (in same statement) gives them a name by stuffing them in the symbol table. But once created, the method short-circuits any further AUTOLOAD invocation; the method is already built.

what I really need is enough optree-optimization fu to change the method-name in the caller code so that it can point to a name-munged method.

what I want to do is partly satisfied by $meth .= $line; but then the munged method, ex: auto_25(), wont be invoked by A::auto() called in main, and Im back to using AUTOLOAD as a dispatcher.

I have tried some lesser ways to achieve this, but no joy; code below attempts to put some context in arg-0, but is defeated by lack of CONSTANT-ness, a new {} is constructed each time, defeating a hash with munged method-names and a-sub refs. 

#!/usr/local/bin/perl -w
use strict;
no strict 'refs';

package A;
use Data::Dumper;
use vars qw($AUTOLOAD);
my %cache;

sub AUTOLOAD {
    (my $meth = $AUTOLOAD) =~ s/.*:://;
    return if $meth eq 'DESTROY';
    my ($package, $filename, $line, $subroutine) = caller(0);

    print "$meth called by: $package, $filename, $line, $subroutine\n"
+;

    $cache{"$package, $filename, $line, $subroutine"} = $_[0];
    $_[0]->{line} = $line;

    *{'A::'.$meth} = sub {
    print "invoking $meth from: $package, $filename, $line, $subroutin
+e\n";
    print "\twith ", Dumper (\@_);

    };
    goto &{'A::'.$meth};
}

package main;

foreach (1..2) {
    # if hashref were CONSTANT, and not rebuilt for each invocation,
    # it could preserve the 
  A::fancy({arb=>1},1);
  A::fancy({ok=>2},2);
  A::auto({});
  A::auto({});
}
use Data::Dumper;

print Dumper (\%A::);

[download]
if you run this, youll find the line# reported is same for each call (due to closure on $line). I could get new $line for each invocation, but that defeats a main goal of using the a-sub (efficiency; avoiding unneeded caller()s).

In reply to munging function names with AUTOLOAD by jimc

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