convert many subroutines to use signatures - #708
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First, I used a small program (included below) to automatically convert
existing subroutines, which use @_, to use signatures. This will not
have been comprehensive. Some use "shift" to get signatures. Also, the
program will not upgrade anonymous subroutines. And there are probably
other shortfalls.
Then, I ran the tests repeatedly and corrected errors that were exposed,
most of which were related to arguments that were optional but had been
(of course) converted to mandatory arguments.
This may well affect some plugins downstream, so we'll want to do a
bunch of testing before deciding this is a good idea!
#!/bin/env perl
use v5.36.0;
my $fn = $ARGV[0];
my @output;
{
open my $fh, '<', $fn;
my @input = <$fh>;
LINE: while (my $line = shift @input) {
if ($line =~ /^sub (\S+) \{$/) {
my $sub = $1;
my $next = shift @input;
if ($next && $next =~ /^\s*my (\([^)]+\)) = \@_;$/) {
my $sig = $1;
my $new_line = "sub $sub $sig {\n";
warn $new_line;
push @output, $new_line;
while (@input && $input[0] !~ /\S/) {
shift @input;
}
next LINE;
}
unshift @input, $next;
}
push @output, $line;
}
}
open my $fh, '>', $fn;
print {$fh} @output;
close $fh;
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