BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
+ require Config;
+ if (($Config::Config{'extensions'} !~ m!\bList/Util\b!) ){
+ print "1..0 # Skip -- Perl configured without List::Util module\n";
+ exit 0;
+ }
}
package Oscalar;
package main;
-$test = 0;
+our $test = 0;
$| = 1;
print "1..",&last,"\n";
sub test {
$test++;
if (@_ > 1) {
+ my $comment = "";
+ $comment = " # " . $_ [2] if @_ > 2;
if ($_[0] eq $_[1]) {
- print "ok $test\n";
+ print "ok $test$comment\n";
+ return 1;
} else {
- print "not ok $test: '$_[0]' ne '$_[1]'\n";
+ $comment .= ": '$_[0]' ne '$_[1]'";
+ print "not ok $test$comment\n";
+ return 0;
}
} else {
if (shift) {
print "ok $test\n";
+ return 1;
} else {
print "not ok $test\n";
- }
+ return 0;
+ }
}
}
$iter = iterator->new(5);
test scalar <${iter}>, '5'; # 176
$acc = '';
- $acc .= " $out" while $out = <${iter}>;
+ $acc .= " $out" while $out = <$iter>;
test $acc, ' 4 3 2 1 0'; # 177
}
{
test(($r || 0) == 0); # 222
+package utf8_o;
+
+use overload
+ '""' => sub { return $_[0]->{var}; }
+ ;
+
+sub new
+ {
+ my $class = shift;
+ my $self = {};
+ $self->{var} = shift;
+ bless $self,$class;
+ }
+
+package main;
+
+
+my $utfvar = new utf8_o 200.2.1;
+test("$utfvar" eq 200.2.1); # 223 - stringify
+test("a$utfvar" eq "a".200.2.1); # 224 - overload via sv_2pv_flags
+
+# 225..227 -- more %{} tests. Hangs in 5.6.0, okay in later releases.
+# Basically this example implements strong encapsulation: if Hderef::import()
+# were to eval the overload code in the caller's namespace, the privatisation
+# would be quite transparent.
+package Hderef;
+use overload '%{}' => sub { (caller(0))[0] eq 'Foo' ? $_[0] : die "zap" };
+package Foo;
+@Foo::ISA = 'Hderef';
+sub new { bless {}, shift }
+sub xet { @_ == 2 ? $_[0]->{$_[1]} :
+ @_ == 3 ? ($_[0]->{$_[1]} = $_[2]) : undef }
+package main;
+my $a = Foo->new;
+$a->xet('b', 42);
+test ($a->xet('b'), 42);
+test (!defined eval { $a->{b} });
+test ($@ =~ /zap/);
+
+{
+ package t229;
+ use overload '=' => sub { 42 },
+ '++' => sub { my $x = ${$_[0]}; $_[0] };
+ sub new { my $x = 42; bless \$x }
+
+ my $warn;
+ {
+ local $SIG{__WARN__} = sub { $warn++ };
+ my $x = t229->new;
+ my $y = $x;
+ eval { $y++ };
+ }
+ main::test (!$warn);
+}
+
+{
+ my ($int, $out1, $out2);
+ {
+ BEGIN { $int = 0; overload::constant 'integer' => sub {$int++; 17}; }
+ $out1 = 0;
+ $out2 = 1;
+ }
+ test($int, 2, "#24313"); # 230
+ test($out1, 17, "#24313"); # 231
+ test($out2, 17, "#24313"); # 232
+}
+
+{
+ package Numify;
+ use overload (qw(0+ numify fallback 1));
+
+ sub new {
+ my $val = $_[1];
+ bless \$val, $_[0];
+ }
+
+ sub numify { ${$_[0]} }
+}
+
+{
+ package perl31793;
+ use overload cmp => sub { 0 };
+ package perl31793_fb;
+ use overload cmp => sub { 0 }, fallback => 1;
+ package main;
+ my $o = bless [], 'perl31793';
+ my $of = bless [], 'perl31793_fb';
+ my $no = bless [], 'no_overload';
+ test (overload::StrVal(\"scalar") =~ /^SCALAR\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal([]) =~ /^ARRAY\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal({}) =~ /^HASH\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal(sub{1}) =~ /^CODE\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal(\*GLOB) =~ /^GLOB\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal(\$o) =~ /^REF\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal(qr/a/) =~ /^Regexp=SCALAR\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal($o) =~ /^perl31793=ARRAY\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal($of) =~ /^perl31793_fb=ARRAY\(0x[0-9a-f]+\)$/);
+ test (overload::StrVal($no) =~ /^no_overload=ARRAY\(0x[0-9a-f]+\)$/);
+}
+
+# These are all check that overloaded values rather than reference addressess
+# are what is getting tested.
+my ($two, $one, $un, $deux) = map {new Numify $_} 2, 1, 1, 2;
+my ($ein, $zwei) = (1, 2);
+
+my %map = (one => 1, un => 1, ein => 1, deux => 2, two => 2, zwei => 2);
+foreach my $op (qw(<=> == != < <= > >=)) {
+ foreach my $l (keys %map) {
+ foreach my $r (keys %map) {
+ my $ocode = "\$$l $op \$$r";
+ my $rcode = "$map{$l} $op $map{$r}";
+
+ my $got = eval $ocode;
+ die if $@;
+ my $expect = eval $rcode;
+ die if $@;
+ test ($got, $expect, $ocode) or print "# $rcode\n";
+ }
+ }
+}
+{
+ # check that overloading works in regexes
+ {
+ package Foo493;
+ use overload
+ '""' => sub { "^$_[0][0]\$" },
+ '.' => sub {
+ bless [
+ $_[2]
+ ? (ref $_[1] ? $_[1][0] : $_[1]) . ':' .$_[0][0]
+ : $_[0][0] . ':' . (ref $_[1] ? $_[1][0] : $_[1])
+ ], 'Foo493'
+ };
+ }
+
+ my $a = bless [ "a" ], 'Foo493';
+ test('a' =~ /$a/);
+ test('x:a' =~ /x$a/);
+ test('x:a:=' =~ /x$a=$/);
+ test('x:a:a:=' =~ /x$a$a=$/);
+
+}
+
+{
+ my $twenty_three = 23;
+ # Check that constant overloading propagates into evals
+ BEGIN { overload::constant integer => sub { 23 } }
+ test(eval "17", $twenty_three);
+}
+
+
# Last test is:
-sub last {222}
+sub last {498}