qw(
"" stringify
-0+ numify) # Order of arguments unsignificant
+0+ numify) # Order of arguments insignificant
);
sub new {
package main;
$| = 1;
-use Test::More tests => 509;
+use Test::More tests => 607;
$a = new Oscalar "087";
}
is($int, 9);
is($out, 1024);
+is($int, 9);
+{
+ BEGIN { overload::constant 'integer' => sub {$int++; shift()+1}; }
+ eval q{$out = 42};
+}
+is($int, 10);
+is($out, 43);
$foo = 'foo';
$foo1 = 'f\'o\\o';
}, 'deref';
# Hash:
my @cont = sort %$deref;
- if ("\t" eq "\011") { # ascii
+ if ("\t" eq "\011") { # ASCII
is("@cont", '23 5 fake foo');
}
- else { # ebcdic alpha-numeric sort order
+ else { # EBCDIC alpha-numeric sort order
is("@cont", 'fake foo 23 5');
}
my @keys = sort keys %$deref;
main::is("$int_x", 1054);
}
-# make sure that we don't inifinitely recurse
+# make sure that we don't infinitely recurse
{
my $c = 0;
package Recurse;
like(overload::StrVal(sub{1}), qr/^CODE\(0x[0-9a-f]+\)$/);
like(overload::StrVal(\*GLOB), qr/^GLOB\(0x[0-9a-f]+\)$/);
like(overload::StrVal(\$o), qr/^REF\(0x[0-9a-f]+\)$/);
- like(overload::StrVal(qr/a/), qr/^Regexp=SCALAR\(0x[0-9a-f]+\)$/);
+ like(overload::StrVal(qr/a/), qr/^Regexp=REGEXP\(0x[0-9a-f]+\)$/);
like(overload::StrVal($o), qr/^perl31793=ARRAY\(0x[0-9a-f]+\)$/);
like(overload::StrVal($of), qr/^perl31793_fb=ARRAY\(0x[0-9a-f]+\)$/);
like(overload::StrVal($no), qr/^no_overload=ARRAY\(0x[0-9a-f]+\)$/);
}
-# These are all check that overloaded values rather than reference addressess
+# These are all check that overloaded values rather than reference addresses
# are what is getting tested.
my ($two, $one, $un, $deux) = map {new Numify $_} 2, 1, 1, 2;
my ($ein, $zwei) = (1, 2);
}
{
+ {
+ package QRonly;
+ use overload qr => sub { qr/x/ }, fallback => 1;
+ }
+ {
+ my $x = bless [], "QRonly";
+
+ # like tries to be too clever, and decides that $x-stringified
+ # doesn't look like a regex
+ ok("x" =~ $x, "qr-only matches");
+ ok("y" !~ $x, "qr-only doesn't match what it shouldn't");
+ ok("xx" =~ /x$x/, "qr-only matches with concat");
+ like("$x", qr/^QRonly=ARRAY/, "qr-only doesn't have string overload");
+
+ my $qr = bless qr/y/, "QRonly";
+ ok("x" =~ $qr, "qr with qr-overload uses overload");
+ ok("y" !~ $qr, "qr with qr-overload uses overload");
+ is("$qr", "".qr/y/, "qr with qr-overload stringify");
+
+ my $rx = $$qr;
+ ok("y" =~ $rx, "bare rx with qr-overload doesn't overload match");
+ ok("x" !~ $rx, "bare rx with qr-overload doesn't overload match");
+ is("$rx", "".qr/y/, "bare rx with qr-overload stringify");
+ }
+ {
+ package QRandSTR;
+ use overload qr => sub { qr/x/ }, q/""/ => sub { "y" };
+ }
+ {
+ my $x = bless [], "QRandSTR";
+ ok("x" =~ $x, "qr+str uses qr for match");
+ ok("y" !~ $x, "qr+str uses qr for match");
+ ok("xx" =~ /x$x/, "qr+str uses qr for match with concat");
+ is("$x", "y", "qr+str uses str for stringify");
+
+ my $qr = bless qr/z/, "QRandSTR";
+ is("$qr", "y", "qr with qr+str uses str for stringify");
+ ok("xx" =~ /x$x/, "qr with qr+str uses qr for match");
+
+ my $rx = $$qr;
+ ok("z" =~ $rx, "bare rx with qr+str doesn't overload match");
+ is("$rx", "".qr/z/, "bare rx with qr+str doesn't overload stringify");
+ }
+ {
+ package QRany;
+ use overload qr => sub { $_[0]->(@_) };
+
+ package QRself;
+ use overload qr => sub { $_[0] };
+ }
+ {
+ my $rx = bless sub { ${ qr/x/ } }, "QRany";
+ ok("x" =~ $rx, "qr overload accepts a bare rx");
+ ok("y" !~ $rx, "qr overload accepts a bare rx");
+
+ my $str = bless sub { "x" }, "QRany";
+ ok(!eval { "x" =~ $str }, "qr overload doesn't accept a string");
+ like($@, qr/^Overloaded qr did not return a REGEXP/, "correct error");
+
+ my $oqr = bless qr/z/, "QRandSTR";
+ my $oqro = bless sub { $oqr }, "QRany";
+ ok("z" =~ $oqro, "qr overload doesn't recurse");
+
+ my $qrs = bless qr/z/, "QRself";
+ ok("z" =~ $qrs, "qr overload can return self");
+ }
+ {
+ package STRonly;
+ use overload q/""/ => sub { "x" };
+
+ package STRonlyFB;
+ use overload q/""/ => sub { "x" }, fallback => 1;
+ }
+ {
+ my $fb = bless [], "STRonlyFB";
+ ok("x" =~ $fb, "qr falls back to \"\"");
+ ok("y" !~ $fb, "qr falls back to \"\"");
+
+ my $nofb = bless [], "STRonly";
+ ok("x" =~ $nofb, "qr falls back even without fallback");
+ ok("y" !~ $nofb, "qr falls back even without fallback");
+ }
+}
+
+{
my $twenty_three = 23;
# Check that constant overloading propagates into evals
BEGIN { overload::constant integer => sub { 23 } }
my $obj;
$obj = bless {name => 'cool'}, 'Sklorsh';
$obj->delete;
- ok(eval {if ($obj) {1}; 1}, $@ || 'reblessed into nonexist namespace');
+ ok(eval {if ($obj) {1}; 1}, $@ || 'reblessed into nonexistent namespace');
$obj = bless {name => 'cool'}, 'Sklorsh';
$obj->delete_with_self;
ok(!$b, "Expect overloaded boolean");
ok(!$a, "Expect overloaded boolean");
}
+
+{
+ package Flrbbbbb;
+ use overload
+ bool => sub { shift->{truth} eq 'yes' },
+ '0+' => sub { shift->{truth} eq 'yes' ? '1' : '0' },
+ '!' => sub { shift->{truth} eq 'no' },
+ fallback => 1;
+
+ sub new { my $class = shift; bless { truth => shift }, $class }
+
+ package main;
+
+ my $yes = Flrbbbbb->new('yes');
+ my $x;
+ $x = 1 if $yes; is($x, 1);
+ $x = 2 unless $yes; is($x, 1);
+ $x = 3 if !$yes; is($x, 1);
+ $x = 4 unless !$yes; is($x, 4);
+
+ my $no = Flrbbbbb->new('no');
+ $x = 0;
+ $x = 1 if $no; is($x, 0);
+ $x = 2 unless $no; is($x, 2);
+ $x = 3 if !$no; is($x, 3);
+ $x = 4 unless !$no; is($x, 3);
+
+ $x = 0;
+ $x = 1 if !$no && $yes; is($x, 1);
+ $x = 2 unless !$no && $yes; is($x, 1);
+ $x = 3 if $no || !$yes; is($x, 1);
+ $x = 4 unless $no || !$yes; is($x, 4);
+
+ $x = 0;
+ $x = 1 if !$no || !$yes; is($x, 1);
+ $x = 2 unless !$no || !$yes; is($x, 1);
+ $x = 3 if !$no && !$yes; is($x, 1);
+ $x = 4 unless !$no && !$yes; is($x, 4);
+}
+
{
use Scalar::Util 'weaken';
use overload '""' => sub {"CLiK KLAK"};
package Ksshfwoom;
- use overload '""' => sub {"OOOKK AWK"};
package main;
bless $obj, 'Ksshfwoom';
- is ($obj, "OOOKK AWK");
- is ($ref, "OOOKK AWK");
+ like ($obj, qr/^Ksshfwoom=/);
+ like ($ref, qr/^Ksshfwoom=/);
undef $obj;
is ($ref, undef);
}
+
+{
+ package bit;
+ # bit operations have overloadable assignment variants too
+
+ sub new { bless \$_[1], $_[0] }
+
+ use overload
+ "&=" => sub { bit->new($_[0]->val . ' & ' . $_[1]->val) },
+ "^=" => sub { bit->new($_[0]->val . ' ^ ' . $_[1]->val) },
+ "|" => sub { bit->new($_[0]->val . ' | ' . $_[1]->val) }, # |= by fallback
+ ;
+
+ sub val { ${$_[0]} }
+
+ package main;
+
+ my $a = bit->new(my $va = 'a');
+ my $b = bit->new(my $vb = 'b');
+
+ $a &= $b;
+ is($a->val, 'a & b', "overloaded &= works");
+
+ my $c = bit->new(my $vc = 'c');
+
+ $b ^= $c;
+ is($b->val, 'b ^ c', "overloaded ^= works");
+
+ my $d = bit->new(my $vd = 'd');
+
+ $c |= $d;
+ is($c->val, 'c | d', "overloaded |= (by fallback) works");
+}
+
+{
+ # comparison operators with nomethod (bug 41546)
+ my $warning = "";
+ my $method;
+
+ package nomethod_false;
+ use overload nomethod => sub { $method = 'nomethod'; 0 };
+
+ package nomethod_true;
+ use overload nomethod => sub { $method= 'nomethod'; 'true' };
+
+ package main;
+ local $^W = 1;
+ local $SIG{__WARN__} = sub { $warning = $_[0] };
+
+ my $f = bless [], 'nomethod_false';
+ ($warning, $method) = ("", "");
+ is($f eq 'whatever', 0, 'nomethod makes eq return 0');
+ is($method, 'nomethod');
+
+ my $t = bless [], 'nomethod_true';
+ ($warning, $method) = ("", "");
+ is($t eq 'whatever', 'true', 'nomethod makes eq return "true"');
+ is($method, 'nomethod');
+ is($warning, "", 'nomethod eq need not return number');
+
+ eval q{
+ package nomethod_false;
+ use overload cmp => sub { $method = 'cmp'; 0 };
+ };
+ $f = bless [], 'nomethod_false';
+ ($warning, $method) = ("", "");
+ ok($f eq 'whatever', 'eq falls back to cmp (nomethod not called)');
+ is($method, 'cmp');
+
+ eval q{
+ package nomethod_true;
+ use overload cmp => sub { $method = 'cmp'; 'true' };
+ };
+ $t = bless [], 'nomethod_true';
+ ($warning, $method) = ("", "");
+ ok($t eq 'whatever', 'eq falls back to cmp (nomethod not called)');
+ is($method, 'cmp');
+ like($warning, qr/isn't numeric/, 'cmp should return number');
+
+}
+
+{
+ # nomethod called for '!' after attempted fallback
+ my $nomethod_called = 0;
+
+ package nomethod_not;
+ use overload nomethod => sub { $nomethod_called = 'yes'; };
+
+ package main;
+ my $o = bless [], 'nomethod_not';
+ my $res = ! $o;
+
+ is($nomethod_called, 'yes', "nomethod() is called for '!'");
+ is($res, 'yes', "nomethod(..., '!') return value propagates");
+}
+
+{
+ # Subtle bug pre 5.10, as a side effect of the overloading flag being
+ # stored on the reference rather than the referent. Despite the fact that
+ # objects can only be accessed via references (even internally), the
+ # referent actually knows that it's blessed, not the references. So taking
+ # a new, unrelated, reference to it gives an object. However, the
+ # overloading-or-not flag was on the reference prior to 5.10, and taking
+ # a new reference didn't (use to) copy it.
+
+ package kayo;
+
+ use overload '""' => sub {${$_[0]}};
+
+ sub Pie {
+ return "$_[0], $_[1]";
+ }
+
+ package main;
+
+ my $class = 'kayo';
+ my $string = 'bam';
+ my $crunch_eth = bless \$string, $class;
+
+ is("$crunch_eth", $string);
+ is ($crunch_eth->Pie("Meat"), "$string, Meat");
+
+ my $wham_eth = \$string;
+
+ is("$wham_eth", $string,
+ 'This reference did not have overloading in 5.8.8 and earlier');
+ is ($crunch_eth->Pie("Apple"), "$string, Apple");
+
+ my $class = ref $wham_eth;
+ $class =~ s/=.*//;
+
+ # Bless it back into its own class!
+ bless $wham_eth, $class;
+
+ is("$wham_eth", $string);
+ is ($crunch_eth->Pie("Blackbird"), "$string, Blackbird");
+}
+
+{
+ package numify_int;
+ use overload "0+" => sub { $_[0][0] += 1; 42 };
+ package numify_self;
+ use overload "0+" => sub { $_[0][0]++; $_[0] };
+ package numify_other;
+ use overload "0+" => sub { $_[0][0]++; $_[0][1] = bless [], 'numify_int' };
+ package numify_by_fallback;
+ use overload fallback => 1;
+
+ package main;
+ my $o = bless [], 'numify_int';
+ is(int($o), 42, 'numifies to integer');
+ is($o->[0], 1, 'int() numifies only once');
+
+ my $aref = [];
+ my $num_val = int($aref);
+ my $r = bless $aref, 'numify_self';
+ is(int($r), $num_val, 'numifies to self');
+ is($r->[0], 1, 'int() numifies once when returning self');
+
+ my $s = bless [], 'numify_other';
+ is(int($s), 42, 'numifies to numification of other object');
+ is($s->[0], 1, 'int() numifies once when returning other object');
+ is($s->[1][0], 1, 'returned object numifies too');
+
+ my $m = bless $aref, 'numify_by_fallback';
+ is(int($m), $num_val, 'numifies to usual reference value');
+ is(abs($m), $num_val, 'numifies to usual reference value');
+ is(-$m, -$num_val, 'numifies to usual reference value');
+ is(0+$m, $num_val, 'numifies to usual reference value');
+ is($m+0, $num_val, 'numifies to usual reference value');
+ is($m+$m, 2*$num_val, 'numifies to usual reference value');
+ is(0-$m, -$num_val, 'numifies to usual reference value');
+ is(1*$m, $num_val, 'numifies to usual reference value');
+ is(int($m/1), $num_val, 'numifies to usual reference value');
+ is($m%100, $num_val%100, 'numifies to usual reference value');
+ is($m**1, $num_val, 'numifies to usual reference value');
+
+ is(abs($aref), $num_val, 'abs() of ref');
+ is(-$aref, -$num_val, 'negative of ref');
+ is(0+$aref, $num_val, 'ref addition');
+ is($aref+0, $num_val, 'ref addition');
+ is($aref+$aref, 2*$num_val, 'ref addition');
+ is(0-$aref, -$num_val, 'subtraction of ref');
+ is(1*$aref, $num_val, 'multiplicaton of ref');
+ is(int($aref/1), $num_val, 'division of ref');
+ is($aref%100, $num_val%100, 'modulo of ref');
+ is($aref**1, $num_val, 'exponentiation of ref');
+}
+
+{
+ package CopyConstructorFallback;
+ use overload
+ '++' => sub { "$_[0]"; $_[0] },
+ fallback => 1;
+ sub new { bless {} => shift }
+
+ package main;
+
+ my $o = CopyConstructorFallback->new;
+ my $x = $o++; # would segfault
+ my $y = ++$o;
+ is($x, $o, "copy constructor falls back to assignment (postinc)");
+ is($y, $o, "copy constructor falls back to assignment (preinc)");
+}
+
+# EOF
projects / p5sagit/p5-mst-13.2.git / blobdiff