=cut
-my %sigils = qw/SCALAR $ ARRAY @ HASH % GLOB * CODE &/;
+my %sigils = qw/SCALAR $ ARRAY @ HASH % GLOB * CODE &/;
my %reftypes = reverse %sigils;
sub _check_ref {
- my ($a, $p) = @_;
- my $r;
- if (!defined $a || !defined($r = reftype $a)) { # not defined or plain scalar
- croak 'Got ' . ((defined $a) ? 'a plain scalar' : 'undef')
- . ' where a reference was expected';
+ my ($arg, $sigil) = @_;
+
+ my $reftype;
+ if (not defined $arg or not defined($reftype = reftype $arg)) {
+ # not defined or plain scalar
+ my $that = (defined $arg) ? 'a plain scalar' : 'undef';
+ croak "Got $that where a reference was expected";
}
- croak 'Unexpected ' . $r . ' reference' unless exists $sigils{$r}
- and $p =~ /\Q$sigils{$r}\E/;
- return $r;
+
+ croak "Unexpected $reftype reference" unless exists $sigils{$reftype}
+ and $sigil =~ /\Q$sigils{$reftype}\E/;
+
+ $reftype;
}
sub _clean_msg {
my ($msg) = @_;
+
$msg =~ s/(?:\s+called)?\s+at\s+.*$//s;
- return $msg;
+
+ $msg;
}
=head2 C<flatten $proto, @args>
sub flatten {
my $proto = shift;
+
return @_ unless defined $proto;
+
my @args;
while ($proto =~ /(\\?)(\[[^\]]+\]|[^\];])/g) {
- my $p = $2;
+ my $sigil = $2;
+
if ($1) {
- my $a = shift;
- my $r = _check_ref $a, $p;
- push @args, $r eq 'SCALAR'
- ? $$a
- : ($r eq 'ARRAY'
- ? @$a
- : ($r eq 'HASH'
- ? %$a
- : ($r eq 'GLOB'
- ? *$a
- : &$a # _check_ref ensures this must be a code ref
+ my $arg = shift;
+ my $reftype = _check_ref $arg, $sigil;
+
+ push @args, $reftype eq 'SCALAR'
+ ? $$arg
+ : ($reftype eq 'ARRAY'
+ ? @$arg
+ : ($reftype eq 'HASH'
+ ? %$arg
+ : ($reftype eq 'GLOB'
+ ? *$arg
+ : &$arg # _check_ref ensures this must be a code ref
)
)
);
- } elsif ($p =~ /[\@\%]/) {
+
+ } elsif ($sigil =~ /[\@\%]/) {
push @args, @_;
last;
} else {
push @args, shift;
}
}
+
return @args;
}
=cut
sub recall {
- my $wrap = eval { wrap shift };
- croak _clean_msg $@ if $@;
- return $wrap->(@_);
+ my $name = shift;
+
+ my ($wrap, $err);
+ {
+ local $@;
+ $wrap = eval { wrap $name };
+ $err = $@;
+ }
+ croak _clean_msg $err if $err;
+
+ goto $wrap;
}
=head1 EXPORT