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#!perl -T
use strict;
use warnings;
use lib 't/lib';
use Test::Leaner tests => 4 * 4 * (8 ** 3) * 2;
my $depth = 3;
my $magic_val = 123;
my @prefixes = (
sub { $_[0] },
sub { "$_[0] = $magic_val" },
sub { "exists $_[0]" },
sub { "delete $_[0]" },
);
my (@vlex, %vlex, $vrlex);
our (@vgbl, %vgbl, $vrgbl);
my @heads = (
'$vlex', # lexical array/hash
'$vgbl', # global array/hash
'$vrlex->', # lexical array/hash reference
'$vrgbl->', # global array/hash reference
);
my $lex;
our $gbl;
my @derefs = (
'[0]', # array const (aelemfast)
'[$lex]', # array lexical
'[$gbl]', # array global
'[$lex+1]', # array complex
'{foo}', # hash const
'{$lex}', # hash lexical
'{$gbl}', # hash global
'{"x$lex"}' # hash complex
);
sub reset_vars {
(@vlex, %vlex, $vrlex) = ();
(@vgbl, %vgbl, $vrgbl) = ();
$lex = 1;
$gbl = 2;
}
{
package autovivification::TestIterator;
sub new {
my $class = shift;
my (@lists, @max);
for my $arg (@_) {
next unless defined $arg;
my $type = ref $arg;
my $list;
if ($type eq 'ARRAY') {
$list = $arg;
} elsif ($type eq '') {
$list = [ 1 .. $arg ];
} else {
die "Invalid argument of type $type";
}
my $max = @$list;
die "Empty list" unless $max;
push @lists, $list;
push @max, $max;
}
my $len = @_;
bless {
len => $len,
max => \@max,
lists => \@lists,
idx => [ (0) x $len ],
}, $class;
}
sub next {
my $self = shift;
my ($len, $max, $idx) = @$self{qw<len max idx>};
my $i;
++$idx->[0];
for ($i = 0; $i < $len; ++$i) {
if ($idx->[$i] == $max->[$i]) {
$idx->[$i] = 0;
++$idx->[$i + 1] unless $i == $len - 1;
} else {
last;
}
}
return $i < $len;
}
sub items {
my $self = shift;
my ($len, $lists, $idx) = @$self{qw<len lists idx>};
return map $lists->[$_]->[$idx->[$_]], 0 .. ($len - 1);
}
}
my $iterator = autovivification::TestIterator->new(
\@prefixes, \@heads, (\@derefs) x $depth,
);
do {
my ($prefix, @elems) = $iterator->items;
my $code = $prefix->(join '', @elems);
my $exp = ($code =~ /^\s*exists/) ? !1
: (($code =~ /=\s*$magic_val/) ? $magic_val
: undef);
reset_vars();
my ($res, $err) = do {
local $SIG{__WARN__} = sub { die @_ };
local $@;
my $r = eval <<" CODE";
no autovivification;
$code
CODE
($r, $@)
};
is $err, '', "$code: no exception";
is $res, $exp, "$code: value";
} while ($iterator->next);
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