package main;
$| = 1;
-use Test::More tests => 4880;
+BEGIN { require './test.pl'; require './charset_tools.pl' }
+plan tests => 5215;
use Scalar::Util qw(tainted);
is(ref $b, "Oscalar");
is($a, "087");
-is($b, "88");
+is($b, "89");
is(ref $a, "Oscalar");
package Oscalar;
is(ref $b, "Oscalar");
is($a, "087");
-is($b, "90");
+is($b, "91");
is(ref $a, "Oscalar");
$b=$a;
is($aI, "xx");
is("b${aI}c", "_._.b.__.xx._.__.c._");
-# Here we test blessing to a package updates hash
+# Here we test that both "no overload" and
+# blessing to a package update hash
eval "package Oscalar; no overload '.'";
-is("b${a}", "_.b.__.xx._");
+is("b${a}", "bxx");
$x="1";
bless \$x, Oscalar;
is("b${a}c", "bxxc");
eval "package Oscalar; sub comple; use overload '~' => 'comple'";
-$na = eval { ~$a }; # Hash was not updated
-like($@, qr/no method found/);
+$na = eval { ~$a };
+is($@, '');
bless \$x, Oscalar;
$na = eval { ~$a }; # Hash updated
-warn "`$na', $@" if $@;
+warn "'$na', $@" if $@;
ok !$@;
is($na, '_!_xx_!_');
$na = 0;
-$na = eval { ~$aI }; # Hash was not updated
-like($@, qr/no method found/);
+$na = eval { ~$aI };
+is($@, '');
bless \$x, OscalarI;
eval "package Oscalar; sub rshft; use overload '>>' => 'rshft'";
-$na = eval { $aI >> 1 }; # Hash was not updated
-like($@, qr/no method found/);
+$na = eval { $aI >> 1 };
+is($@, '');
bless \$x, OscalarI;
}
sub TIESCALAR { my $pack = shift; $pack->new(@_) }
sub FETCH { shift }
- sub nop { } # Around a bug
- sub vars { my $p = shift; tie($_, $p), $_->nop foreach @_; }
+ sub vars { my $p = shift; tie($_, $p) foreach @_; }
sub STORE {
my $obj = shift;
$#$obj = 1;
sub iter { my ($x) = @_; return undef if $$x < 0; return $$x--; }
}
-# XXX iterator overload not intended to work with CORE::GLOBAL?
-if (defined &CORE::GLOBAL::glob) {
- is('1', '1');
- is('1', '1');
- is('1', '1');
-}
-else {
+{
my $iter = iterator->new(5);
my $acc = '';
my $out;
}
{
- # check the `$_[0]' is not an overloadable type warning
+ # check the '$_[0]' is not an overloadable type warning
my $a = "" ;
local $SIG{__WARN__} = sub {$a = $_[0]} ;
$x = eval ' overload::constant "fred" => sub {} ; ' ;
is($a, "");
use warnings 'overload' ;
$x = eval ' overload::constant "fred" => sub {} ; ' ;
- like($a, qr/^`fred' is not an overloadable type at/);
+ like($a, qr/^'fred' is not an overloadable type at/);
}
{
- # check the `$_[1]' is not a code reference warning
+ # check the '$_[1]' is not a code reference warning
my $a = "" ;
local $SIG{__WARN__} = sub {$a = $_[0]} ;
$x = eval ' overload::constant "integer" => 1; ' ;
is($a, "");
use warnings 'overload' ;
$x = eval ' overload::constant "integer" => 1; ' ;
- like($a, qr/^`1' is not a code reference at/);
+ like($a, qr/^'1' is not a code reference at/);
+}
+
+{
+ # check the invalid argument warning [perl #74098]
+ my $a = "" ;
+ local $SIG{__WARN__} = sub {$a = $_[0]} ;
+ $x = eval ' use overload "~|_|~" => sub{} ' ;
+ eval ' no overload "~|_|~" ' ;
+ is($a, "");
+ use warnings 'overload' ;
+ $x = eval ' use overload "~|_|~" => sub{} ' ;
+ like($a, qr/^overload arg '~\|_\|~' is invalid at \(eval \d+\) line /,
+ 'invalid arg warning');
+ undef $a;
+ eval ' no overload "~|_|~" ' ;
+ like($a, qr/^overload arg '~\|_\|~' is invalid at \(eval \d+\) line /,
+ 'invalid arg warning');
}
{
}
{
- 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;
like(overload::StrVal($no), qr/^no_overload=ARRAY\(0x[0-9a-f]+\)$/);
}
-# These are all check that overloaded values rather than reference addresses
-# are what is getting tested.
+{
+ package Numify;
+ use overload (qw(0+ numify fallback 1));
+
+ sub new {
+ my $val = $_[1];
+ bless \$val, $_[0];
+ }
+
+ sub numify { ${$_[0]} }
+}
+
+# These all check that overloaded values, rather than reference addresses,
+# are what are getting tested.
my ($two, $one, $un, $deux) = map {new Numify $_} 2, 1, 1, 2;
my ($ein, $zwei) = (1, 2);
# doesn't look like a regex
ok("x" =~ $x, "qr-only matches");
ok("y" !~ $x, "qr-only doesn't match what it shouldn't");
+ ok("x" =~ /^(??{$x})$/, "qr-only with ?? matches");
+ ok("y" !~ /^(??{$x})$/, "qr-only with ?? doesn't match what it shouldn't");
ok("xx" =~ /x$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" !~ $qr, "qr with qr-overload uses overload");
+ ok("x" =~ /^(??{$qr})$/, "qr with qr-overload with ?? uses overload");
+ ok("y" !~ /^(??{$qr})$/, "qr with qr-overload with ?? uses overload");
is("$qr", "".qr/y/, "qr with qr-overload stringify");
my $rx = $$qr;
ok("y" =~ $rx, "bare rx with qr-overload doesn't overload match");
ok("x" !~ $rx, "bare rx with qr-overload doesn't overload match");
+ ok("y" =~ /^(??{$rx})$/, "bare rx with qr-overload with ?? doesn't overload match");
+ ok("x" !~ /^(??{$rx})$/, "bare rx with qr-overload with ?? doesn't overload match");
is("$rx", "".qr/y/, "bare rx with qr-overload stringify");
}
{
}
{
+ # Check readonliness of constants, whether shared hash key
+ # scalars or no (brought up in bug #109744)
+ BEGIN { overload::constant integer => sub { "main" }; }
+ eval { ${\5} = 'whatever' };
+ like $@, qr/^Modification of a read-only value attempted at /,
+ 'constant overloading makes read-only constants';
+ BEGIN { overload::constant integer => sub { __PACKAGE__ }; }
+ eval { ${\5} = 'whatever' };
+ like $@, qr/^Modification of a read-only value attempted at /,
+ '... even with shared hash key scalars';
+}
+
+{
package Sklorsh;
use overload
bool => sub { shift->is_cool };
$obj = bless do {my $a; \$a}, 'Shklitza';
$ref = $obj;
- is ($obj, "CLiK KLAK");
- is ($ref, "CLiK KLAK");
+ is ("$obj", "CLiK KLAK");
+ is ("$ref", "CLiK KLAK");
weaken $ref;
- is ($ref, "CLiK KLAK");
+ is ("$ref", "CLiK KLAK");
bless $obj, 'Ksshfwoom';
# how many times FETCH/STORE is called:
#
# Mutating ops (+=, ++ etc) trigger a copy ('='), since
- # the code can't distingish between something that's been copied:
+ # the code can't distinguish between something that's been copied:
# $a = foo->new(0); $b = $a; refcnt($$b) == 2
# and overloaded objects stored in ties which will have extra
# refcounts due to the tied_obj magic and entries on the tmps
# This accounts for a '=', and an extra STORE.
# We also have a FETCH returning the final value from the eval,
# plus a FETCH in the overload subs themselves: ($_[0][0])
- # triggers one. However, tied agregates have a mechanism to prevent
+ # triggers one. However, tied aggregates have a mechanism to prevent
# multiple fetches between STOREs, which means that the tied
# hash skips doing a FETCH during '='.
"do { my \$arg = %s; \$_[2] ? (3 $op \$arg) : (\$arg $op 3) }";
# ARRAY FETCH: initial
# SCALAR FETCH: initial eval-return,
- # with fallback, we just stringify, so eval-return skipped
-
- # XXX TODO concat overload with fallback calls FETCH too often
- if ($_ eq '.') {
- push @tests, [ 18, "%s $op 3", "($_)", '("")',
- [ 1, 2, 0, 1, 2, 0 ], 1 ];
- push @tests, [ 18, "3 $op %s", "($_)", '("")',
- [ 1, 2, 0, 1, 2, 0 ], 1 ];
- }
- else {
- push @tests, [ 18, "%s $op 3", "($_)", '("")',
- [ 1, 2, 0, 1, 1, 0 ], 1 ];
- next if $_ eq 'x'; # repeat only overloads on LHS
- push @tests, [ 18, "3 $op %s", "($_)", '("")',
- [ 1, 2, 0, 1, 1, 0 ], 1 ];
- }
+ # with fallback, we just stringify, so eval-return skipped,
+ # but an extra FETCH happens in sub"", except for 'x',
+ # which passes a copy of the RV to sub"", avoiding the
+ # second FETCH
+
+ push @tests, [ 18, "%s $op 3", "($_)", '("")',
+ [ 1, 2, 0, 1, ($_ eq '.' ? 2 : 1), 0 ], 1 ];
+ next if $_ eq 'x'; # repeat only overloads on LHS
+ push @tests, [ 18, "3 $op %s", "($_)", '("")',
+ [ 1, 2, 0, 1, 2, 0 ], 1 ];
}
for (qw(++ --)) {
# note: this is testing unary qr, not binary =~
$subs{qr} = '(qr/%s/)';
- # XXX TODO qr overload with fallback calls "" and FETCH too often
- #push @tests, [ "abc", '"abc" =~ (%s)', '(qr)', '("")', [ 1, 2, 0 ], 0 ];
- push @tests, [ "abc", '"abc" =~ (%s)', '(qr)', '("")("")',
- [ 1, 2, 0, 1, 5, 0 ], 0 ];
+ push @tests, [ "abc", '"abc" =~ (%s)', '(qr)', '("")', [ 1, 2, 0 ], 0 ];
+ push @tests, [ chr 256, 'chr(256) =~ (%s)', '(qr)', '("")',
+ [ 1, 2, 0 ], 0 ];
$e = '"abc" ~~ (%s)';
$subs{'~~'} = $e;
. '$_[1] eq "l" ? (-l ($f)) :'
. '$_[1] eq "t" ? (-t ($f)) :'
. '$_[1] eq "T" ? (-T ($f)) : 0;}';
- # Note - we don't care what these filetests return, as
+ # Note - we don't care what these file tests return, as
# long as the tied and untied versions return the same value.
# The flags below are chosen to test all uses of tryAMAGICftest_MG
for (qw(r e f l t T)) {
- # XXX TODO -X overload with fallback calls FETCH too often
- # XXX and -t calls "" too often too
- #push @tests, [ 'TEST', "-$_ (%s)", '(-X)', '("")', [ 1, 2, 0 ], 0 ];
- if ($_ eq 't') {
- push @tests, [ 'TEST', "-$_ (%s)", '(-X)', '("")("")',
- [ 1, 2, 0, 1, 5, 0 ], 0 ];
- }
- else {
- push @tests, [ 'TEST', "-$_ (%s)", '(-X)', '("")',
- [ 1, 2, 0, 1, 3, 0 ], 0 ];
- }
+ push @tests, [ 'TEST', "-$_ (%s)", '(-X)', '("")', [ 1, 2, 0 ], 0 ];
}
$subs{'${}'} = '%s';
$subs{'%{}'} = '%s';
push @tests, [ {qw(a 1 b 2 c 3)}, 'join "", sort keys %%{%s}',
- '(%{})', undef, [ 1, 2, 0 ], 0 ];
+ '(%{})', undef, [ 1, 1, 0 ], 0 ];
$subs{'&{}'} = '%s';
push @tests, [ sub {99}, 'do {&{%s} for 1,2}',
push @tests, [ \*RT57012A, '*RT57012B = *{%s}; our $RT57012B',
'(*{})', undef, [ 1, 1, 0 ], 0 ];
- # XXX TODO: '<>'
+ my $iter_text = ("some random text\n" x 100) . $^X;
+ open my $iter_fh, '<', \$iter_text
+ or die "open of \$iter_text gave ($!)\n";
+ $subs{'<>'} = '<$iter_fh>';
+ push @tests, [ $iter_fh, '<%s>', '(<>)', undef, [ 1, 1, 0 ], 1 ];
+ push @tests, [ $iter_fh,
+ 'local *CORE::GLOBAL::glob = sub {}; eval q|<%s>|',
+ '(<>)', undef, [ 1, 1, 0 ], 1 ];
# eval should do tie, overload on its arg before checking taint */
push @tests, [ '1;', 'eval q(eval %s); $@ =~ /Insecure/',
for my $sub (keys %subs) {
+ no warnings 'experimental::smartmatch';
my $term = $subs{$sub};
my $t = sprintf $term, '$_[0][0]';
my $e ="sub { \$funcs .= '($sub)'; my \$r; if (\$use_int) {"
? "-\$_[0][0]"
: "$_[3](\$_[0][0])";
my $r;
+ no warnings 'experimental::smartmatch';
if ($use_int) {
use integer; $r = eval $e;
}
$use_int = ($int ne '');
my $plain = $tainted_val;
my $plain_term = $int . sprintf $sub_term, '$plain';
- my $exp = eval $plain_term;
+ my $exp = do {no warnings 'experimental::smartmatch'; eval $plain_term };
diag("eval of plain_term <$plain_term> gave <$@>") if $@;
is(tainted($exp), $exp_taint,
"<$plain_term> taint of expected return");
for my $ov_pkg (qw(RT57012_OV RT57012_OV_FB)) {
- # the deref ops don't support fallback
next if $ov_pkg eq 'RT57012_OV_FB'
and not defined $exp_fb_funcs;
my ($exp_fetch_a, $exp_fetch_s, $exp_store) =
$ta[0] = bless [ $tainted_val ], $ov_pkg;
my $oload = bless [ $tainted_val ], $ov_pkg;
- for my $var ('$ta[0]', '$ts', '$oload') {
+ for my $var ('$ta[0]', '$ts', '$oload',
+ ($sub_term eq '<%s>' ? '${ts}' : ())
+ ) {
$funcs = '';
$fetches = 0;
my $res_term = $int . sprintf $sub_term, $var;
my $desc = "<$res_term> $ov_pkg" ;
- my $res = eval $res_term;
+ my $res = do { no warnings 'experimental::smartmatch'; eval $res_term };
diag("eval of res_term $desc gave <$@>") if $@;
- # uniquely, the inc/dec ops return tthe original
+ # uniquely, the inc/dec ops return the original
# ref rather than a copy, so stringify it to
# find out if its tainted
$res = "$res" if $res_term =~ /\+\+|--/;
}
}
+# Test overload from the main package
+fresh_perl_is
+ '$^W = 1; use overload q\""\ => sub {"ning"}; print bless []',
+ 'ning',
+ { switches => ['-wl'], stderr => 1 },
+ 'use overload from the main package'
+;
+
+{
+ package blessed_methods;
+ use overload '+' => sub {};
+ bless overload::Method __PACKAGE__,'+';
+ eval { overload::Method __PACKAGE__,'+' };
+ ::is($@, '', 'overload::Method and blessed overload methods');
+}
+
+{
+ # fallback to 'cmp' and '<=>' with heterogeneous operands
+ # [perl #71286]
+ my $not_found = 'no method found';
+ my $used = 0;
+ package CmpBase;
+ sub new {
+ my $n = $_[1] || 0;
+ bless \$n, ref $_[0] || $_[0];
+ }
+ sub cmp {
+ $used = \$_[0];
+ (${$_[0]} <=> ${$_[1]}) * ($_[2] ? -1 : 1);
+ }
+
+ package NCmp;
+ use parent '-norequire', 'CmpBase';
+ use overload '<=>' => 'cmp';
+
+ package SCmp;
+ use parent '-norequire', 'CmpBase';
+ use overload 'cmp' => 'cmp';
+
+ package main;
+ my $n = NCmp->new(5);
+ my $s = SCmp->new(3);
+ my $res;
+
+ eval { $res = $n > $s; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A>B using A<=> when B overloaded, no B<=>');
+
+ eval { $res = $s < $n; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A<B using B<=> when A overloaded, no A<=>');
+
+ eval { $res = $s lt $n; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A lt B using A:cmp when B overloaded, no B:cmp');
+
+ eval { $res = $n gt $s; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A gt B using B:cmp when A overloaded, no A:cmp');
+
+ my $o = NCmp->new(9);
+ $res = $n < $o;
+ is($used, \$n, 'A < B uses <=> from A in preference to B');
+
+ my $t = SCmp->new(7);
+ $res = $s lt $t;
+ is($used, \$s, 'A lt B uses cmp from A in preference to B');
+}
+
+{
+ # Combinatorial testing of 'fallback' and 'nomethod'
+ # [perl #71286]
+ package NuMB;
+ use overload '0+' => sub { ${$_[0]}; },
+ '""' => 'str';
+ sub new {
+ my $self = shift;
+ my $n = @_ ? shift : 0;
+ bless my $obj = \$n, ref $self || $self;
+ }
+ sub str {
+ no strict qw/refs/;
+ my $s = "(${$_[0]} ";
+ $s .= "nomethod, " if defined ${ref($_[0]).'::(nomethod'};
+ my $fb = ${ref($_[0]).'::()'};
+ $s .= "fb=" . (defined $fb ? 0 + $fb : 'undef') . ")";
+ }
+ sub nomethod { "${$_[0]}.nomethod"; }
+
+ # create classes for tests
+ package main;
+ my @falls = (0, 'undef', 1);
+ my @nomethods = ('', 'nomethod');
+ my $not_found = 'no method found';
+ for my $fall (@falls) {
+ for my $nomethod (@nomethods) {
+ my $nomethod_decl = $nomethod
+ ? $nomethod . "=>'nomethod'," : '';
+ eval qq{
+ package NuMB$fall$nomethod;
+ use parent '-norequire', qw/NuMB/;
+ use overload $nomethod_decl
+ fallback => $fall;
+ };
+ }
+ }
+
+ # operation and precedence of 'fallback' and 'nomethod'
+ # for all combinations with 2 overloaded operands
+ for my $nomethod2 (@nomethods) {
+ for my $nomethod1 (@nomethods) {
+ for my $fall2 (@falls) {
+ my $pack2 = "NuMB$fall2$nomethod2";
+ for my $fall1 (@falls) {
+ my $pack1 = "NuMB$fall1$nomethod1";
+ my ($test, $out, $exp);
+ eval qq{
+ my \$x = $pack1->new(2);
+ my \$y = $pack2->new(3);
+ \$test = "\$x" . ' * ' . "\$y";
+ \$out = \$x * \$y;
+ };
+ $out = $not_found if $@ =~ /$not_found/;
+ $exp = $nomethod1 ? '2.nomethod' :
+ $nomethod2 ? '3.nomethod' :
+ $fall1 eq '1' && $fall2 eq '1' ? 6
+ : $not_found;
+ is($out, $exp, "$test --> $exp");
+ }
+ }
+ }
+ }
+
+ # operation of 'fallback' and 'nomethod'
+ # where the other operand is not overloaded
+ for my $nomethod (@nomethods) {
+ for my $fall (@falls) {
+ my ($test, $out, $exp);
+ eval qq{
+ my \$x = NuMB$fall$nomethod->new(2);
+ \$test = "\$x" . ' * 3';
+ \$out = \$x * 3;
+ };
+ $out = $not_found if $@ =~ /$not_found/;
+ $exp = $nomethod ? '2.nomethod' :
+ $fall eq '1' ? 6
+ : $not_found;
+ is($out, $exp, "$test --> $exp");
+
+ eval qq{
+ my \$x = NuMB$fall$nomethod->new(2);
+ \$test = '3 * ' . "\$x";
+ \$out = 3 * \$x;
+ };
+ $out = $not_found if $@ =~ /$not_found/;
+ is($out, $exp, "$test --> $exp");
+ }
+ }
+}
+
+# since 5.6 overloaded <> was leaving an extra arg on the stack!
+
+{
+ package Iter1;
+ use overload '<>' => sub { 11 };
+ package main;
+ my $a = bless [], 'Iter1';
+ my $x;
+ my @a = (10, ($x = <$a>), 12);
+ is ($a[0], 10, 'Iter1: a[0]');
+ is ($a[1], 11, 'Iter1: a[1]');
+ is ($a[2], 12, 'Iter1: a[2]');
+ @a = (10, ($x .= <$a>), 12);
+ is ($a[0], 10, 'Iter1: a[0] concat');
+ is ($a[1], 1111, 'Iter1: a[1] concat');
+ is ($a[2], 12, 'Iter1: a[2] concat');
+}
+
+# Some tests for error messages
+{
+ package Justus;
+ use overload '+' => 'justice';
+ eval {"".bless[]};
+ ::like $@, qr/^Can't resolve method "justice" overloading "\+" in p(?x:
+ )ackage "Justus" at /,
+ 'Error message when explicitly named overload method does not exist';
+
+ package JustUs;
+ our @ISA = 'JustYou';
+ package JustYou { use overload '+' => 'injustice'; }
+ "JustUs"->${\"(+"};
+ eval {"".bless []};
+ ::like $@, qr/^Stub found while resolving method "\?{3}" overloadin(?x:
+ )g "\+" in package "JustUs" at /,
+ 'Error message when sub stub is encountered';
+}
+
+{
+ # check that the right number of stringifications
+ # and the correct un-utf8-ifying happen on regex compile
+ package utf8_match;
+ my $c;
+ use overload '""' => sub { $c++; $_[0][0] ? "^\x{100}\$" : "^A\$"; };
+ my $o = bless [0], 'utf8_match';
+
+ $o->[0] = 0;
+ $c = 0;
+ ::ok("A" =~ "^A\$", "regex stringify utf8=0 ol=0 bytes=0");
+ ::ok("A" =~ $o, "regex stringify utf8=0 ol=1 bytes=0");
+ ::is($c, 1, "regex stringify utf8=0 ol=1 bytes=0 count");
+
+ $o->[0] = 1;
+ $c = 0;
+ ::ok("\x{100}" =~ "^\x{100}\$",
+ "regex stringify utf8=1 ol=0 bytes=0");
+ ::ok("\x{100}" =~ $o, "regex stringify utf8=1 ol=1 bytes=0");
+ ::is($c, 1, "regex stringify utf8=1 ol=1 bytes=0 count");
+
+ use bytes;
+
+ $o->[0] = 0;
+ $c = 0;
+ ::ok("A" =~ "^A\$", "regex stringify utf8=0 ol=0 bytes=1");
+ ::ok("A" =~ $o, "regex stringify utf8=0 ol=1 bytes=1");
+ ::is($c, 1, "regex stringify utf8=0 ol=1 bytes=1 count");
+
+ $o->[0] = 1;
+ $c = 0;
+ ::ok(main::byte_utf8a_to_utf8n("\xc4\x80") =~ "^\x{100}\$",
+ "regex stringify utf8=1 ol=0 bytes=1");
+ ::ok(main::byte_utf8a_to_utf8n("\xc4\x80") =~ $o, "regex stringify utf8=1 ol=1 bytes=1");
+ ::is($c, 1, "regex stringify utf8=1 ol=1 bytes=1 count");
+
+
+}
+
+# [perl #40333]
+# overload::Overloaded should not use a ->can designed for autoloading.
+# This example attempts to be as realistic as possible. The o class has a
+# default singleton object, but can have instances, too. The proxy class
+# represents proxies for o objects, but class methods delegate to the
+# singleton.
+# overload::Overloaded used to return incorrect results for proxy objects.
+package proxy {
+ sub new { bless [$_[1]], $_[0] }
+ sub AUTOLOAD {
+ our $AUTOLOAD =~ s/.*:://;
+ &_self->$AUTOLOAD;
+ }
+ sub can { SUPER::can{@_} || &_self->can($_[1]) }
+ sub _self { ref $_[0] ? $_[0][0] : $o::singleton }
+}
+package o { use overload '""' => sub { 'keck' };
+ sub new { bless[], $_[0] }
+ our $singleton = o->new; }
+ok !overload::Overloaded(new proxy new o),
+ 'overload::Overloaded does not incorrectly return true for proxy classes';
+
+# Another test, based on the type of explosive test class for which
+# perl #40333 was filed.
+{
+ package broken_can;
+ sub can {}
+ use overload '""' => sub {"Ahoy!"};
+
+ package main;
+ my $obj = bless [], 'broken_can';
+ ok(overload::Overloaded($obj));
+}
+
+sub eleventative::cos { 'eleven' }
+sub twelvetative::abs { 'twelve' }
+sub thirteentative::abs { 'thirteen' }
+sub fourteentative::abs { 'fourteen' }
+@eleventative::ISA = twelvetative::;
+{
+ my $o = bless [], 'eleventative';
+ eval 'package eleventative; use overload map +($_)x2, cos=>abs=>';
+ is cos $o, 'eleven', 'overloading applies to object blessed before';
+ bless [], 'eleventative';
+ is cos $o, 'eleven',
+ 'ovrld applies to previously-blessed obj after other obj is blessed';
+ $o = bless [], 'eleventative';
+ *eleventative::cos = sub { 'ten' };
+ is cos $o, 'ten', 'method changes affect overloading';
+ @eleventative::ISA = thirteentative::;
+ is abs $o, 'thirteen', 'isa changes affect overloading';
+ bless $o, 'fourteentative';
+ @fourteentative::ISA = 'eleventative';
+ is abs $o, 'fourteen', 'isa changes can turn overloading on';
+}
+
+# no overload "fallback";
+{ package phake;
+ use overload fallback => 1, '""' => sub { 'arakas' };
+ no overload 'fallback';
+}
+$a = bless [], 'phake';
+is "$a", "arakas",
+ 'no overload "fallback" does not stop overload from working';
+ok !eval { () = $a eq 'mpizeli'; 1 },
+ 'no overload "fallback" resets fallback to undef on overloaded class';
+{ package ent; use overload fallback => 0, abs => sub{};
+ our@ISA = 'huorn';
+ package huorn;
+ use overload fallback => 1;
+ package ent;
+ no overload "fallback"; # disable previous declaration
+}
+$a = bless [], ent::;
+is eval {"$a"}, overload::StrVal($a),
+ 'no overload undoes fallback declaration completetly'
+ or diag $@;
+
+# inherited fallback
+{
+ package pervyy;
+ our @ISA = 'vtoryy';
+ use overload "abs" =>=> sub {};
+ package vtoryy;
+ use overload fallback => 1, 'sin' =>=> sub{}
+}
+$a = bless [], pervyy::;
+is eval {"$a"}, overload::StrVal($a),
+ 'fallback is inherited by classes that have their own overloading'
+ or diag $@;
+
+# package separators in method names
+{
+ package mane;
+ use overload q\""\ => "bear::strength";
+ use overload bool => "bear'bouillon";
+}
+@bear::ISA = 'food';
+sub food::strength { 'twine' }
+sub food::bouillon { 0 }
+$a = bless[], mane::;
+is eval { "$a" }, 'twine', ':: in method name' or diag $@;
+is eval { !$a }, 1, "' in method name" or diag $@;
+
+# [perl #113050] Half of CPAN assumes fallback is under "()"
+{
+ package dodo;
+ use overload '+' => sub {};
+ no strict;
+ *{"dodo::()"} = sub{};
+ ${"dodo::()"} = 1;
+}
+$a = bless [],'dodo';
+is eval {"$a"}, overload::StrVal($a), 'fallback is stored under "()"';
+
+# [perl #47119]
+{
+ my $context;
+
+ {
+ package Splitter;
+ use overload '<>' => \&chars;
+
+ sub new {
+ my $class = shift;
+ my ($string) = @_;
+ bless \$string, $class;
+ }
+
+ sub chars {
+ my $self = shift;
+ my @chars = split //, $$self;
+ $context = wantarray;
+ return @chars;
+ }
+ }
+
+ my $obj = Splitter->new('bar');
+
+ $context = 42; # not 1, '', or undef
+
+ my @foo = <$obj>;
+ is($context, 1, "list context (readline list)");
+ is(scalar(@foo), 3, "correct result (readline list)");
+ is($foo[0], 'b', "correct result (readline list)");
+ is($foo[1], 'a', "correct result (readline list)");
+ is($foo[2], 'r', "correct result (readline list)");
+
+ $context = 42;
+
+ my $foo = <$obj>;
+ ok(defined($context), "scalar context (readline scalar)");
+ is($context, '', "scalar context (readline scalar)");
+ is($foo, 3, "correct result (readline scalar)");
+
+ $context = 42;
+
+ <$obj>;
+ ok(!defined($context), "void context (readline void)");
+
+ $context = 42;
+
+ my @bar = <${obj}>;
+ is($context, 1, "list context (glob list)");
+ is(scalar(@bar), 3, "correct result (glob list)");
+ is($bar[0], 'b', "correct result (glob list)");
+ is($bar[1], 'a', "correct result (glob list)");
+ is($bar[2], 'r', "correct result (glob list)");
+
+ $context = 42;
+
+ my $bar = <${obj}>;
+ ok(defined($context), "scalar context (glob scalar)");
+ is($context, '', "scalar context (glob scalar)");
+ is($bar, 3, "correct result (glob scalar)");
+
+ $context = 42;
+
+ <${obj}>;
+ ok(!defined($context), "void context (glob void)");
+}
+{
+ my $context;
+
+ {
+ package StringWithContext;
+ use overload '""' => \&stringify;
+
+ sub new {
+ my $class = shift;
+ my ($string) = @_;
+ bless \$string, $class;
+ }
+
+ sub stringify {
+ my $self = shift;
+ $context = wantarray;
+ return $$self;
+ }
+ }
+
+ my $obj = StringWithContext->new('bar');
+
+ $context = 42;
+
+ my @foo = "".$obj;
+ ok(defined($context), "scalar context (stringify list)");
+ is($context, '', "scalar context (stringify list)");
+ is(scalar(@foo), 1, "correct result (stringify list)");
+ is($foo[0], 'bar', "correct result (stringify list)");
+
+ $context = 42;
+
+ my $foo = "".$obj;
+ ok(defined($context), "scalar context (stringify scalar)");
+ is($context, '', "scalar context (stringify scalar)");
+ is($foo, 'bar', "correct result (stringify scalar)");
+
+ $context = 42;
+
+ "".$obj;
+
+ is($context, '', "scalar context (stringify void)");
+}
+{
+ my ($context, $swap);
+
+ {
+ package AddWithContext;
+ use overload '+' => \&add;
+
+ sub new {
+ my $class = shift;
+ my ($num) = @_;
+ bless \$num, $class;
+ }
+
+ sub add {
+ my $self = shift;
+ my ($other, $swapped) = @_;
+ $context = wantarray;
+ $swap = $swapped;
+ return ref($self)->new($$self + $other);
+ }
+
+ sub val { ${ $_[0] } }
+ }
+
+ my $obj = AddWithContext->new(6);
+
+ $context = $swap = 42;
+
+ my @foo = $obj + 7;
+ ok(defined($context), "scalar context (add list)");
+ is($context, '', "scalar context (add list)");
+ ok(defined($swap), "not swapped (add list)");
+ is($swap, '', "not swapped (add list)");
+ is(scalar(@foo), 1, "correct result (add list)");
+ is($foo[0]->val, 13, "correct result (add list)");
+
+ $context = $swap = 42;
+
+ @foo = 7 + $obj;
+ ok(defined($context), "scalar context (add list swap)");
+ is($context, '', "scalar context (add list swap)");
+ ok(defined($swap), "swapped (add list swap)");
+ is($swap, 1, "swapped (add list swap)");
+ is(scalar(@foo), 1, "correct result (add list swap)");
+ is($foo[0]->val, 13, "correct result (add list swap)");
+
+ $context = $swap = 42;
+
+ my $foo = $obj + 7;
+ ok(defined($context), "scalar context (add scalar)");
+ is($context, '', "scalar context (add scalar)");
+ ok(defined($swap), "not swapped (add scalar)");
+ is($swap, '', "not swapped (add scalar)");
+ is($foo->val, 13, "correct result (add scalar)");
+
+ $context = $swap = 42;
+
+ my $foo = 7 + $obj;
+ ok(defined($context), "scalar context (add scalar swap)");
+ is($context, '', "scalar context (add scalar swap)");
+ ok(defined($swap), "swapped (add scalar swap)");
+ is($swap, 1, "swapped (add scalar swap)");
+ is($foo->val, 13, "correct result (add scalar swap)");
+
+ $context = $swap = 42;
+
+ $obj + 7;
+
+ ok(!defined($context), "void context (add void)");
+ ok(defined($swap), "not swapped (add void)");
+ is($swap, '', "not swapped (add void)");
+
+ $context = $swap = 42;
+
+ 7 + $obj;
+
+ ok(!defined($context), "void context (add void swap)");
+ ok(defined($swap), "swapped (add void swap)");
+ is($swap, 1, "swapped (add void swap)");
+
+ $obj = AddWithContext->new(6);
+
+ $context = $swap = 42;
+
+ my @foo = $obj += 7;
+ ok(defined($context), "scalar context (add assign list)");
+ is($context, '', "scalar context (add assign list)");
+ ok(!defined($swap), "not swapped and autogenerated (add assign list)");
+ is(scalar(@foo), 1, "correct result (add assign list)");
+ is($foo[0]->val, 13, "correct result (add assign list)");
+ is($obj->val, 13, "correct result (add assign list)");
+
+ $obj = AddWithContext->new(6);
+
+ $context = $swap = 42;
+
+ my $foo = $obj += 7;
+ ok(defined($context), "scalar context (add assign scalar)");
+ is($context, '', "scalar context (add assign scalar)");
+ ok(!defined($swap), "not swapped and autogenerated (add assign scalar)");
+ is($foo->val, 13, "correct result (add assign scalar)");
+ is($obj->val, 13, "correct result (add assign scalar)");
+
+ $obj = AddWithContext->new(6);
+
+ $context = $swap = 42;
+
+ $obj += 7;
+
+ ok(defined($context), "scalar context (add assign void)");
+ is($context, '', "scalar context (add assign void)");
+ ok(!defined($swap), "not swapped and autogenerated (add assign void)");
+ is($obj->val, 13, "correct result (add assign void)");
+
+ $obj = AddWithContext->new(6);
+
+ $context = $swap = 42;
+
+ my @foo = ++$obj;
+ ok(defined($context), "scalar context (add incr list)");
+ is($context, '', "scalar context (add incr list)");
+ ok(!defined($swap), "not swapped and autogenerated (add incr list)");
+ is(scalar(@foo), 1, "correct result (add incr list)");
+ is($foo[0]->val, 7, "correct result (add incr list)");
+ is($obj->val, 7, "correct result (add incr list)");
+
+ $obj = AddWithContext->new(6);
+
+ $context = $swap = 42;
+
+ my $foo = ++$obj;
+ ok(defined($context), "scalar context (add incr scalar)");
+ is($context, '', "scalar context (add incr scalar)");
+ ok(!defined($swap), "not swapped and autogenerated (add incr scalar)");
+ is($foo->val, 7, "correct result (add incr scalar)");
+ is($obj->val, 7, "correct result (add incr scalar)");
+
+ $obj = AddWithContext->new(6);
+
+ $context = $swap = 42;
+
+ ++$obj;
+
+ ok(defined($context), "scalar context (add incr void)");
+ is($context, '', "scalar context (add incr void)");
+ ok(!defined($swap), "not swapped and autogenerated (add incr void)");
+ is($obj->val, 7, "correct result (add incr void)");
+}
+
+# [perl #113010]
+{
+ {
+ package OnlyFallback;
+ use overload fallback => 0;
+ }
+ {
+ my $obj = bless {}, 'OnlyFallback';
+ my $died = !eval { "".$obj; 1 };
+ my $err = $@;
+ ok($died, "fallback of 0 causes error");
+ like($err, qr/"\.": no method found/, "correct error");
+ }
+
+ {
+ package OnlyFallbackUndef;
+ use overload fallback => undef;
+ }
+ {
+ my $obj = bless {}, 'OnlyFallbackUndef';
+ my $died = !eval { "".$obj; 1 };
+ my $err = $@;
+ ok($died, "fallback of undef causes error");
+ # this one tries falling back to stringify before dying
+ like($err, qr/"""": no method found/, "correct error");
+ }
+
+ {
+ package OnlyFallbackTrue;
+ use overload fallback => 1;
+ }
+ {
+ my $obj = bless {}, 'OnlyFallbackTrue';
+ my $val;
+ my $died = !eval { $val = "".$obj; 1 };
+ my $err = $@;
+ ok(!$died, "fallback of 1 doesn't cause error")
+ || diag("got error of $err");
+ like($val, qr/^OnlyFallbackTrue=HASH\(/, "stringified correctly");
+ }
+}
+
+{
+ # Making Regexp class overloaded: avoid infinite recursion.
+ # Do this in a separate process since it, well, overloads Regexp!
+ fresh_perl_is(
+ <<'EOF',
+package Regexp;
+use overload q{""} => sub {$_[0] };
+package main;
+my $r1 = qr/1/;
+my $r2 = qr/ABC$r1/;
+print $r2,"\n";
+EOF
+ '(?^:ABC(?^:1))',
+ { stderr => 1 },
+ 'overloaded REGEXP'
+ );
+}
+
+{
+ # RT #121362
+ # splitting the stash HV while rebuilding the overload cache gave
+ # valgrind errors. This test code triggers such a split. It doesn't
+ # actually test anything; its just there for valgrind to spot
+ # problems.
+
+ package A_121362;
+
+ sub stringify { }
+ use overload '""' => 'stringify';
+
+ package B_121362;
+ our @ISA = qw(A_121362);
+
+ package main;
+
+ my $x = bless { }, 'B_121362';
+
+ for ('a'..'z') {
+ delete $B_121362::{stringify}; # delete cache entry
+ no strict 'refs';
+ *{"B_121362::$_"} = sub { }; # increase size of %B_121362
+ my $y = $x->{value}; # trigger cache add to %B_121362
+ }
+ pass("RT 121362");
+}
+
+package refsgalore {
+ use overload
+ '${}' => sub { \42 },
+ '@{}' => sub { [43] },
+ '%{}' => sub { { 44 => 45 } },
+ '&{}' => sub { sub { 46 } };
+}
+{
+ use feature 'postderef';
+ tell myio; # vivifies *myio{IO} at compile time
+ use constant ioref => bless *myio{IO}, refsgalore::;
+ is ioref->$*, 42, '(overloaded constant that is not a scalar ref)->$*';
+ is ioref->[0], 43, '(ovrld constant that is not an array ref)->[0]';
+ is ioref->{44}, 45, "(ovrld const that is not a hash ref)->{key}";
+ is ioref->(), 46, '(overloaded constant that is not a sub ref)->()';
+}
+
+package xstack { use overload 'x' => sub { shift . " x " . shift },
+ '""'=> sub { "xstack" } }
+is join(",", 1..3, scalar((bless([], 'xstack')) x 3, 1), 4..6),
+ "1,2,3,1,4,5,6",
+ '(...)x... in void cx with x overloaded [perl #121827]';
+
+package bitops {
+ our @o;
+ use overload do {
+ my %o;
+ for my $o (qw(& | ^ ~ &. |. ^. ~. &= |= ^= &.= |.= ^.=)) {
+ $o{$o} = sub {
+ ::ok !defined $_[3], "undef (or nonexistent) arg 3 for $o";
+ push @o, $o, scalar @_, $_[4]//'u';
+ $_[0]
+ }
+ }
+ %o, '=' => sub { bless [] };
+ }
+}
+{
+ use experimental 'bitwise';
+ my $o = bless [], bitops::;
+ $_ = $o & 0;
+ $_ = $o | 0;
+ $_ = $o ^ 0;
+ $_ = ~$o;
+ $_ = $o &. 0;
+ $_ = $o |. 0;
+ $_ = $o ^. 0;
+ $_ = ~.$o;
+ $o &= 0;
+ $o |= 0;
+ $o ^= 0;
+ $o &.= 0;
+ $o |.= 0;
+ $o ^.= 0;
+ # elems are in triplets: op, length of @_, numeric? (1/u for y/n)
+ is "@bitops::o", '& 5 1 | 5 1 ^ 5 1 ~ 5 1 &. 3 u |. 3 u ^. 3 u ~. 3 u ' . '&= 5 1 |= 5 1 ^= 5 1 &.= 3 u |.= 3 u ^.= 3 u',
+ 'experimental "bitwise" ops'
+}
+package bitops2 {
+ our @o;
+ use overload
+ nomethod => sub { push @o, $_[3], scalar @_, $_[4]//'u'; $_[0] },
+ '=' => sub { bless [] };
+}
+{
+ use experimental 'bitwise';
+ my $o = bless [], bitops2::;
+ $_ = $o & 0;
+ $_ = $o | 0;
+ $_ = $o ^ 0;
+ $_ = ~$o;
+ $_ = $o &. 0;
+ $_ = $o |. 0;
+ $_ = $o ^. 0;
+ $_ = ~.$o;
+ $o &= 0;
+ $o |= 0;
+ $o ^= 0;
+ $o &.= 0;
+ $o |.= 0;
+ $o ^.= 0;
+ # elems are in triplets: op, length of @_, numeric? (1/u for y/n)
+ is "@bitops2::o", '& 5 1 | 5 1 ^ 5 1 ~ 5 1 &. 4 u |. 4 u ^. 4 u ~. 4 u ' . '&= 5 1 |= 5 1 ^= 5 1 &.= 4 u |.= 4 u ^.= 4 u',
+ 'experimental "bitwise" ops with nomethod'
+}
+
+{ # undefining the overload stash -- KEEP THIS TEST LAST
+ package ant;
+ use overload '+' => 'onion';
+ $_ = \&overload::nil;
+ undef %overload::;
+ ()=0+bless[];
+ ::ok(1, 'no crash when undefining %overload::');
+}
+
+
# EOF
https://perl5.git.perl.org / perl5.git / blobdiff