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################################################################################
#
# Copyright (c) 2002-2024 Marcus Holland-Moritz. All rights reserved.
# This program is free software; you can redistribute it and/or modify
# it under the same terms as Perl itself.
#
################################################################################
use Test;
use Convert::Binary::C @ARGV;
$^W = 1;
BEGIN { plan tests => 49 }
my $c = Convert::Binary::C->new( IntSize => 4, ShortSize => 2, Alignment => 4 );
$c->parse(<<ENDC);
struct flex1 {
int a;
char b;
struct {
char a;
short b;
char c;
int d[][4];
} c;
char d[5];
struct {
char a;
short b[][4];
} e[];
};
struct flex2 {
int a;
struct {
char a[2];
short b;
} b[];
};
struct flex3 {
int a;
int b[][2][3][4];
};
typedef int incomplete[];
typedef int incomplete2[1];
ENDC
ok($c->sizeof('flex1'), 24);
ok($c->offsetof('flex1', 'e[1].a'), 24);
ok($c->offsetof('flex1', 'e[0].b[0][0]'), 24);
ok($c->sizeof('flex2'), 4);
ok($c->offsetof('flex2', 'b[0].b'), 6);
ok($c->sizeof('flex3'), 4);
ok($c->sizeof('flex3.b'), 0);
ok($c->sizeof('flex3.b[0]'), 96);
ok($c->sizeof('flex3.b[0][1]'), 48);
ok($c->sizeof('flex3.b[0][1][2]'), 16);
ok($c->sizeof('flex3.b[0][1][2][3]'), 4);
ok($c->offsetof('flex3', 'b[0]'), 4);
ok($c->offsetof('flex3', 'b[0][0]'), 4);
ok($c->offsetof('flex3', 'b[0][0][0]'), 4);
ok($c->offsetof('flex3', 'b[0][0][0][0]'), 4);
ok($c->offsetof('flex3', 'b[1]'), 100);
ok($c->offsetof('flex3', 'b[0][1]'), 52);
ok($c->offsetof('flex3', 'b[0][0][1]'), 20);
ok($c->offsetof('flex3', 'b[0][0][0][1]'), 8);
ok($c->sizeof('incomplete'), 0);
ok($c->offsetof('incomplete', '[10]'), 40);
my($u, $p);
my $d = pack 'C*', 1 .. 4;
$u = $c->unpack('flex2', $d);
ok(scalar @{$u->{b}}, 0);
$d .= pack 'C', 5;
$u = $c->unpack('flex2', $d);
ok(scalar @{$u->{b}}, 1);
ok(scalar @{$u->{b}[0]{a}}, 2);
ok($u->{b}[0]{a}[0], 5);
ok(not defined $u->{b}[0]{b});
$d .= pack 'C', 6;
$u = $c->unpack('flex2', $d);
ok(scalar @{$u->{b}}, 1);
ok(scalar @{$u->{b}[0]{a}}, 2);
ok($u->{b}[0]{a}[0], 5);
ok($u->{b}[0]{a}[1], 6);
ok(not defined $u->{b}[0]{b});
$d .= pack 'C', 7;
$u = $c->unpack('flex2', $d);
ok(scalar @{$u->{b}}, 1);
ok(scalar @{$u->{b}[0]{a}}, 2);
ok($u->{b}[0]{a}[0], 5);
ok($u->{b}[0]{a}[1], 6);
ok(exists $u->{b}[0]{b});
ok(not defined $u->{b}[0]{b});
$d .= pack 'C', 8;
$u = $c->unpack('flex2', $d);
ok(scalar @{$u->{b}}, 1);
ok(scalar @{$u->{b}[0]{a}}, 2);
ok($u->{b}[0]{a}[0], 5);
ok($u->{b}[0]{a}[1], 6);
ok(exists $u->{b}[0]{b});
ok(defined $u->{b}[0]{b});
$d .= pack 'C', 9;
$u = $c->unpack('flex2', $d);
ok(scalar @{$u->{b}}, 2);
$d = pack 'C*', map { $_ % 256 } 1 .. (10*$c->sizeof('flex3.b[0]'));
$u = $c->unpack('flex3.b', $d);
$p = $c->pack('flex3.b', $u);
ok($d, $p);
for my $member (qw( b[0] b[0][1] b[0][1][2] b[0][1][2][3] )) {
$d = pack 'C*', 1 .. $c->sizeof("flex3.$member");
$u = $c->unpack("flex3.$member", $d);
$p = $c->pack("flex3.$member", $u);
ok($d, $p);
}
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