https://perl5.git.perl.org / perl5.git / blame
| Commit | Line | Data |
|---|---|---|
| 8ebc5c01 | 1 | #!./perl |
| 2 | ||
| 3 | BEGIN { | |
| 4 | chdir 't' if -d 't'; | |
| 93430cb4 | 5 | unshift @INC, '../lib'; |
| 8ebc5c01 | 6 | } |
| 7 | ||
| 8ebc5c01 | 8 | package Oscalar; |
| 9 | use overload ( | |
| 10 | # Anonymous subroutines: | |
| 11 | '+' => sub {new Oscalar $ {$_[0]}+$_[1]}, | |
| 12 | '-' => sub {new Oscalar | |
| 13 | $_[2]? $_[1]-${$_[0]} : ${$_[0]}-$_[1]}, | |
| 14 | '<=>' => sub {new Oscalar | |
| 15 | $_[2]? $_[1]-${$_[0]} : ${$_[0]}-$_[1]}, | |
| 16 | 'cmp' => sub {new Oscalar | |
| 17 | $_[2]? ($_[1] cmp ${$_[0]}) : (${$_[0]} cmp $_[1])}, | |
| 18 | '*' => sub {new Oscalar ${$_[0]}*$_[1]}, | |
| 19 | '/' => sub {new Oscalar | |
| 20 | $_[2]? $_[1]/${$_[0]} : | |
| 21 | ${$_[0]}/$_[1]}, | |
| 22 | '%' => sub {new Oscalar | |
| 23 | $_[2]? $_[1]%${$_[0]} : ${$_[0]}%$_[1]}, | |
| 24 | '**' => sub {new Oscalar | |
| 25 | $_[2]? $_[1]**${$_[0]} : ${$_[0]}-$_[1]}, | |
| 26 | ||
| 27 | qw( | |
| 28 | "" stringify | |
| 29 | 0+ numify) # Order of arguments unsignificant | |
| 30 | ); | |
| 31 | ||
| 32 | sub new { | |
| 33 | my $foo = $_[1]; | |
| 34 | bless \$foo, $_[0]; | |
| 35 | } | |
| 36 | ||
| 37 | sub stringify { "${$_[0]}" } | |
| 38 | sub numify { 0 + "${$_[0]}" } # Not needed, additional overhead | |
| 39 | # comparing to direct compilation based on | |
| 40 | # stringify | |
| 41 | ||
| 42 | package main; | |
| 43 | ||
| 44 | $test = 0; | |
| 45 | $| = 1; | |
| 46 | print "1..",&last,"\n"; | |
| 47 | ||
| 48 | sub test { | |
| b3ac6de7 IZ |
49 | $test++; |
| 50 | if (@_ > 1) { | |
| 51 | if ($_[0] eq $_[1]) { | |
| 52 | print "ok $test\n"; | |
| 53 | } else { | |
| 54 | print "not ok $test: '$_[0]' ne '$_[1]'\n"; | |
| 55 | } | |
| 56 | } else { | |
| 57 | if (shift) { | |
| 58 | print "ok $test\n"; | |
| 59 | } else { | |
| 60 | print "not ok $test\n"; | |
| 61 | } | |
| 62 | } | |
| 8ebc5c01 | 63 | } |
| 64 | ||
| 65 | $a = new Oscalar "087"; | |
| 66 | $b= "$a"; | |
| 67 | ||
| 68 | # All test numbers in comments are off by 1. | |
| 69 | # So much for hard-wiring them in :-) To fix this: | |
| 70 | test(1); # 1 | |
| 71 | ||
| 72 | test ($b eq $a); # 2 | |
| 73 | test ($b eq "087"); # 3 | |
| 74 | test (ref $a eq "Oscalar"); # 4 | |
| 75 | test ($a eq $a); # 5 | |
| 76 | test ($a eq "087"); # 6 | |
| 77 | ||
| 78 | $c = $a + 7; | |
| 79 | ||
| 80 | test (ref $c eq "Oscalar"); # 7 | |
| 81 | test (!($c eq $a)); # 8 | |
| 82 | test ($c eq "94"); # 9 | |
| 83 | ||
| 84 | $b=$a; | |
| 85 | ||
| 86 | test (ref $a eq "Oscalar"); # 10 | |
| 87 | ||
| 88 | $b++; | |
| 89 | ||
| 90 | test (ref $b eq "Oscalar"); # 11 | |
| 91 | test ( $a eq "087"); # 12 | |
| 92 | test ( $b eq "88"); # 13 | |
| 93 | test (ref $a eq "Oscalar"); # 14 | |
| 94 | ||
| 95 | $c=$b; | |
| 96 | $c-=$a; | |
| 97 | ||
| 98 | test (ref $c eq "Oscalar"); # 15 | |
| 99 | test ( $a eq "087"); # 16 | |
| 100 | test ( $c eq "1"); # 17 | |
| 101 | test (ref $a eq "Oscalar"); # 18 | |
| 102 | ||
| 103 | $b=1; | |
| 104 | $b+=$a; | |
| 105 | ||
| 106 | test (ref $b eq "Oscalar"); # 19 | |
| 107 | test ( $a eq "087"); # 20 | |
| 108 | test ( $b eq "88"); # 21 | |
| 109 | test (ref $a eq "Oscalar"); # 22 | |
| 110 | ||
| 111 | eval q[ package Oscalar; use overload ('++' => sub { $ {$_[0]}++;$_[0] } ) ]; | |
| 112 | ||
| 113 | $b=$a; | |
| 114 | ||
| 115 | test (ref $a eq "Oscalar"); # 23 | |
| 116 | ||
| 117 | $b++; | |
| 118 | ||
| 119 | test (ref $b eq "Oscalar"); # 24 | |
| 120 | test ( $a eq "087"); # 25 | |
| 121 | test ( $b eq "88"); # 26 | |
| 122 | test (ref $a eq "Oscalar"); # 27 | |
| 123 | ||
| 124 | package Oscalar; | |
| 125 | $dummy=bless \$dummy; # Now cache of method should be reloaded | |
| 126 | package main; | |
| 127 | ||
| 128 | $b=$a; | |
| 129 | $b++; | |
| 130 | ||
| 131 | test (ref $b eq "Oscalar"); # 28 | |
| 132 | test ( $a eq "087"); # 29 | |
| 133 | test ( $b eq "88"); # 30 | |
| 134 | test (ref $a eq "Oscalar"); # 31 | |
| 135 | ||
| 136 | ||
| 137 | eval q[package Oscalar; use overload ('++' => sub { $ {$_[0]} += 2; $_[0] } ) ]; | |
| 138 | ||
| 139 | $b=$a; | |
| 140 | ||
| 141 | test (ref $a eq "Oscalar"); # 32 | |
| 142 | ||
| 143 | $b++; | |
| 144 | ||
| 145 | test (ref $b eq "Oscalar"); # 33 | |
| 146 | test ( $a eq "087"); # 34 | |
| 147 | test ( $b eq "88"); # 35 | |
| 148 | test (ref $a eq "Oscalar"); # 36 | |
| 149 | ||
| 150 | package Oscalar; | |
| 151 | $dummy=bless \$dummy; # Now cache of method should be reloaded | |
| 152 | package main; | |
| 153 | ||
| 154 | $b++; | |
| 155 | ||
| 156 | test (ref $b eq "Oscalar"); # 37 | |
| 157 | test ( $a eq "087"); # 38 | |
| 158 | test ( $b eq "90"); # 39 | |
| 159 | test (ref $a eq "Oscalar"); # 40 | |
| 160 | ||
| 161 | $b=$a; | |
| 162 | $b++; | |
| 163 | ||
| 164 | test (ref $b eq "Oscalar"); # 41 | |
| 165 | test ( $a eq "087"); # 42 | |
| 166 | test ( $b eq "89"); # 43 | |
| 167 | test (ref $a eq "Oscalar"); # 44 | |
| 168 | ||
| 169 | ||
| 170 | test ($b? 1:0); # 45 | |
| 171 | ||
| 172 | eval q[ package Oscalar; use overload ('=' => sub {$main::copies++; | |
| 173 | package Oscalar; | |
| 174 | local $new=$ {$_[0]}; | |
| 175 | bless \$new } ) ]; | |
| 176 | ||
| 177 | $b=new Oscalar "$a"; | |
| 178 | ||
| 179 | test (ref $b eq "Oscalar"); # 46 | |
| 180 | test ( $a eq "087"); # 47 | |
| 181 | test ( $b eq "087"); # 48 | |
| 182 | test (ref $a eq "Oscalar"); # 49 | |
| 183 | ||
| 184 | $b++; | |
| 185 | ||
| 186 | test (ref $b eq "Oscalar"); # 50 | |
| 187 | test ( $a eq "087"); # 51 | |
| 188 | test ( $b eq "89"); # 52 | |
| 189 | test (ref $a eq "Oscalar"); # 53 | |
| 190 | test ($copies == 0); # 54 | |
| 191 | ||
| 192 | $b+=1; | |
| 193 | ||
| 194 | test (ref $b eq "Oscalar"); # 55 | |
| 195 | test ( $a eq "087"); # 56 | |
| 196 | test ( $b eq "90"); # 57 | |
| 197 | test (ref $a eq "Oscalar"); # 58 | |
| 198 | test ($copies == 0); # 59 | |
| 199 | ||
| 200 | $b=$a; | |
| 201 | $b+=1; | |
| 202 | ||
| 203 | test (ref $b eq "Oscalar"); # 60 | |
| 204 | test ( $a eq "087"); # 61 | |
| 205 | test ( $b eq "88"); # 62 | |
| 206 | test (ref $a eq "Oscalar"); # 63 | |
| 207 | test ($copies == 0); # 64 | |
| 208 | ||
| 209 | $b=$a; | |
| 210 | $b++; | |
| 211 | ||
| 212 | test (ref $b eq "Oscalar") || print ref $b,"=ref(b)\n"; # 65 | |
| 213 | test ( $a eq "087"); # 66 | |
| 214 | test ( $b eq "89"); # 67 | |
| 215 | test (ref $a eq "Oscalar"); # 68 | |
| 216 | test ($copies == 1); # 69 | |
| 217 | ||
| 218 | eval q[package Oscalar; use overload ('+=' => sub {$ {$_[0]} += 3*$_[1]; | |
| 219 | $_[0] } ) ]; | |
| 220 | $c=new Oscalar; # Cause rehash | |
| 221 | ||
| 222 | $b=$a; | |
| 223 | $b+=1; | |
| 224 | ||
| 225 | test (ref $b eq "Oscalar"); # 70 | |
| 226 | test ( $a eq "087"); # 71 | |
| 227 | test ( $b eq "90"); # 72 | |
| 228 | test (ref $a eq "Oscalar"); # 73 | |
| 229 | test ($copies == 2); # 74 | |
| 230 | ||
| 231 | $b+=$b; | |
| 232 | ||
| 233 | test (ref $b eq "Oscalar"); # 75 | |
| 234 | test ( $b eq "360"); # 76 | |
| 235 | test ($copies == 2); # 77 | |
| 236 | $b=-$b; | |
| 237 | ||
| 238 | test (ref $b eq "Oscalar"); # 78 | |
| 239 | test ( $b eq "-360"); # 79 | |
| 240 | test ($copies == 2); # 80 | |
| 241 | ||
| 242 | $b=abs($b); | |
| 243 | ||
| 244 | test (ref $b eq "Oscalar"); # 81 | |
| 245 | test ( $b eq "360"); # 82 | |
| 246 | test ($copies == 2); # 83 | |
| 247 | ||
| 248 | $b=abs($b); | |
| 249 | ||
| 250 | test (ref $b eq "Oscalar"); # 84 | |
| 251 | test ( $b eq "360"); # 85 | |
| 252 | test ($copies == 2); # 86 | |
| 253 | ||
| 254 | eval q[package Oscalar; | |
| 255 | use overload ('x' => sub {new Oscalar ( $_[2] ? "_.$_[1]._" x $ {$_[0]} | |
| 256 | : "_.${$_[0]}._" x $_[1])}) ]; | |
| 257 | ||
| 258 | $a=new Oscalar "yy"; | |
| 259 | $a x= 3; | |
| 260 | test ($a eq "_.yy.__.yy.__.yy._"); # 87 | |
| 261 | ||
| 262 | eval q[package Oscalar; | |
| 263 | use overload ('.' => sub {new Oscalar ( $_[2] ? | |
| 264 | "_.$_[1].__.$ {$_[0]}._" | |
| 265 | : "_.$ {$_[0]}.__.$_[1]._")}) ]; | |
| 266 | ||
| 267 | $a=new Oscalar "xx"; | |
| 268 | ||
| 269 | test ("b${a}c" eq "_._.b.__.xx._.__.c._"); # 88 | |
| 270 | ||
| 271 | # Check inheritance of overloading; | |
| 272 | { | |
| 273 | package OscalarI; | |
| 274 | @ISA = 'Oscalar'; | |
| 275 | } | |
| 276 | ||
| 277 | $aI = new OscalarI "$a"; | |
| 278 | test (ref $aI eq "OscalarI"); # 89 | |
| 279 | test ("$aI" eq "xx"); # 90 | |
| 280 | test ($aI eq "xx"); # 91 | |
| 281 | test ("b${aI}c" eq "_._.b.__.xx._.__.c._"); # 92 | |
| 282 | ||
| 283 | # Here we test blessing to a package updates hash | |
| 284 | ||
| 285 | eval "package Oscalar; no overload '.'"; | |
| 286 | ||
| 287 | test ("b${a}" eq "_.b.__.xx._"); # 93 | |
| 288 | $x="1"; | |
| 289 | bless \$x, Oscalar; | |
| 290 | test ("b${a}c" eq "bxxc"); # 94 | |
| 291 | new Oscalar 1; | |
| 292 | test ("b${a}c" eq "bxxc"); # 95 | |
| 293 | ||
| 294 | # Negative overloading: | |
| 295 | ||
| 296 | $na = eval { ~$a }; | |
| 297 | test($@ =~ /no method found/); # 96 | |
| 298 | ||
| 299 | # Check AUTOLOADING: | |
| 300 | ||
| 301 | *Oscalar::AUTOLOAD = | |
| 302 | sub { *{"Oscalar::$AUTOLOAD"} = sub {"_!_" . shift() . "_!_"} ; | |
| 303 | goto &{"Oscalar::$AUTOLOAD"}}; | |
| 304 | ||
| 44a8e56a | 305 | eval "package Oscalar; sub comple; use overload '~' => 'comple'"; |
| 8ebc5c01 | 306 | |
| 307 | $na = eval { ~$a }; # Hash was not updated | |
| 308 | test($@ =~ /no method found/); # 97 | |
| 309 | ||
| 310 | bless \$x, Oscalar; | |
| 311 | ||
| 312 | $na = eval { ~$a }; # Hash updated | |
| 44a8e56a | 313 | warn "`$na', $@" if $@; |
| 8ebc5c01 | 314 | test !$@; # 98 |
| 315 | test($na eq '_!_xx_!_'); # 99 | |
| 316 | ||
| 317 | $na = 0; | |
| 318 | ||
| 319 | $na = eval { ~$aI }; # Hash was not updated | |
| 320 | test($@ =~ /no method found/); # 100 | |
| 321 | ||
| 322 | bless \$x, OscalarI; | |
| 323 | ||
| 324 | $na = eval { ~$aI }; | |
| 325 | print $@; | |
| 326 | ||
| 327 | test !$@; # 101 | |
| 328 | test($na eq '_!_xx_!_'); # 102 | |
| 329 | ||
| 44a8e56a | 330 | eval "package Oscalar; sub rshft; use overload '>>' => 'rshft'"; |
| 8ebc5c01 | 331 | |
| 332 | $na = eval { $aI >> 1 }; # Hash was not updated | |
| 333 | test($@ =~ /no method found/); # 103 | |
| 334 | ||
| 335 | bless \$x, OscalarI; | |
| 336 | ||
| 337 | $na = 0; | |
| 338 | ||
| 339 | $na = eval { $aI >> 1 }; | |
| 340 | print $@; | |
| 341 | ||
| 342 | test !$@; # 104 | |
| 343 | test($na eq '_!_xx_!_'); # 105 | |
| 344 | ||
| 44a8e56a | 345 | # warn overload::Method($a, '0+'), "\n"; |
| 8ebc5c01 | 346 | test (overload::Method($a, '0+') eq \&Oscalar::numify); # 106 |
| 347 | test (overload::Method($aI,'0+') eq \&Oscalar::numify); # 107 | |
| 348 | test (overload::Overloaded($aI)); # 108 | |
| 349 | test (!overload::Overloaded('overload')); # 109 | |
| 350 | ||
| 351 | test (! defined overload::Method($aI, '<<')); # 110 | |
| 352 | test (! defined overload::Method($a, '<')); # 111 | |
| 353 | ||
| 354 | test (overload::StrVal($aI) =~ /^OscalarI=SCALAR\(0x[\da-fA-F]+\)$/); # 112 | |
| 355 | test (overload::StrVal(\$aI) eq "@{[\$aI]}"); # 113 | |
| 356 | ||
| 44a8e56a | 357 | # Check overloading by methods (specified deep in the ISA tree). |
| 358 | { | |
| 359 | package OscalarII; | |
| 360 | @ISA = 'OscalarI'; | |
| 361 | sub Oscalar::lshft {"_<<_" . shift() . "_<<_"} | |
| 362 | eval "package OscalarI; use overload '<<' => 'lshft', '|' => 'lshft'"; | |
| 363 | } | |
| 364 | ||
| 365 | $aaII = "087"; | |
| 366 | $aII = \$aaII; | |
| 367 | bless $aII, 'OscalarII'; | |
| 368 | bless \$fake, 'OscalarI'; # update the hash | |
| 369 | test(($aI | 3) eq '_<<_xx_<<_'); # 114 | |
| 370 | # warn $aII << 3; | |
| 371 | test(($aII << 3) eq '_<<_087_<<_'); # 115 | |
| 372 | ||
| b3ac6de7 IZ |
373 | { |
| 374 | BEGIN { $int = 7; overload::constant 'integer' => sub {$int++; shift}; } | |
| 375 | $out = 2**10; | |
| 376 | } | |
| 377 | test($int, 9); # 116 | |
| 378 | test($out, 1024); # 117 | |
| 379 | ||
| 380 | $foo = 'foo'; | |
| 381 | $foo1 = 'f\'o\\o'; | |
| 382 | { | |
| 383 | BEGIN { $q = $qr = 7; | |
| 384 | overload::constant 'q' => sub {$q++; push @q, shift, ($_[1] || 'none'); shift}, | |
| 385 | 'qr' => sub {$qr++; push @qr, shift, ($_[1] || 'none'); shift}; } | |
| 386 | $out = 'foo'; | |
| 387 | $out1 = 'f\'o\\o'; | |
| 388 | $out2 = "a\a$foo,\,"; | |
| 389 | /b\b$foo.\./; | |
| 390 | } | |
| 391 | ||
| 392 | test($out, 'foo'); # 118 | |
| 393 | test($out, $foo); # 119 | |
| 394 | test($out1, 'f\'o\\o'); # 120 | |
| 395 | test($out1, $foo1); # 121 | |
| 396 | test($out2, "a\afoo,\,"); # 122 | |
| 397 | test("@q", "foo q f'o\\\\o q a\\a qq ,\\, qq"); # 123 | |
| 398 | test($q, 11); # 124 | |
| 399 | test("@qr", "b\\b qq .\\. qq"); # 125 | |
| 400 | test($qr, 9); # 126 | |
| 401 | ||
| 402 | { | |
| 403 | $_ = '!<b>!foo!<-.>!'; | |
| 404 | BEGIN { overload::constant 'q' => sub {push @q1, shift, ($_[1] || 'none'); "_<" . (shift) . ">_"}, | |
| 405 | 'qr' => sub {push @qr1, shift, ($_[1] || 'none'); "!<" . (shift) . ">!"}; } | |
| 406 | $out = 'foo'; | |
| 407 | $out1 = 'f\'o\\o'; | |
| 408 | $out2 = "a\a$foo,\,"; | |
| 409 | $res = /b\b$foo.\./; | |
| 410 | $a = <<EOF; | |
| 411 | oups | |
| 412 | EOF | |
| 413 | $b = <<'EOF'; | |
| 414 | oups1 | |
| 415 | EOF | |
| 416 | $c = bareword; | |
| 417 | m'try it'; | |
| 418 | s'first part'second part'; | |
| 419 | s/yet another/tail here/; | |
| 420 | tr/z-Z/z-Z/; | |
| 421 | } | |
| 422 | ||
| 423 | test($out, '_<foo>_'); # 117 | |
| 424 | test($out1, '_<f\'o\\o>_'); # 128 | |
| 425 | test($out2, "_<a\a>_foo_<,\,>_"); # 129 | |
| 426 | test("@q1", "foo q f'o\\\\o q a\\a qq ,\\, qq oups | |
| 427 | qq oups1 | |
| 428 | q second part q tail here s z-Z tr z-Z tr"); # 130 | |
| 429 | test("@qr1", "b\\b qq .\\. qq try it q first part q yet another qq"); # 131 | |
| 430 | test($res, 1); # 132 | |
| 431 | test($a, "_<oups | |
| 432 | >_"); # 133 | |
| 433 | test($b, "_<oups1 | |
| 434 | >_"); # 134 | |
| 435 | test($c, "bareword"); # 135 | |
| 436 | ||
| ee239bfe IZ |
437 | { |
| 438 | package symbolic; # Primitive symbolic calculator | |
| 439 | use overload nomethod => \&wrap, '""' => \&str, '0+' => \&num, | |
| 440 | '=' => \&cpy, '++' => \&inc, '--' => \&dec; | |
| 441 | ||
| 442 | sub new { shift; bless ['n', @_] } | |
| 443 | sub cpy { | |
| 444 | my $self = shift; | |
| 445 | bless [@$self], ref $self; | |
| 446 | } | |
| 447 | sub inc { $_[0] = bless ['++', $_[0], 1]; } | |
| 448 | sub dec { $_[0] = bless ['--', $_[0], 1]; } | |
| 449 | sub wrap { | |
| 450 | my ($obj, $other, $inv, $meth) = @_; | |
| 451 | if ($meth eq '++' or $meth eq '--') { | |
| 452 | @$obj = ($meth, (bless [@$obj]), 1); # Avoid circular reference | |
| 453 | return $obj; | |
| 454 | } | |
| 455 | ($obj, $other) = ($other, $obj) if $inv; | |
| 456 | bless [$meth, $obj, $other]; | |
| 457 | } | |
| 458 | sub str { | |
| 459 | my ($meth, $a, $b) = @{+shift}; | |
| 460 | $a = 'u' unless defined $a; | |
| 461 | if (defined $b) { | |
| 462 | "[$meth $a $b]"; | |
| 463 | } else { | |
| 464 | "[$meth $a]"; | |
| 465 | } | |
| 466 | } | |
| 467 | my %subr = ( 'n' => sub {$_[0]} ); | |
| 468 | foreach my $op (split " ", $overload::ops{with_assign}) { | |
| 469 | $subr{$op} = $subr{"$op="} = eval "sub {shift() $op shift()}"; | |
| 470 | } | |
| 471 | my @bins = qw(binary 3way_comparison num_comparison str_comparison); | |
| 472 | foreach my $op (split " ", "@overload::ops{ @bins }") { | |
| 473 | $subr{$op} = eval "sub {shift() $op shift()}"; | |
| 474 | } | |
| 475 | foreach my $op (split " ", "@overload::ops{qw(unary func)}") { | |
| 476 | $subr{$op} = eval "sub {$op shift()}"; | |
| 477 | } | |
| 478 | $subr{'++'} = $subr{'+'}; | |
| 479 | $subr{'--'} = $subr{'-'}; | |
| 480 | ||
| 481 | sub num { | |
| 482 | my ($meth, $a, $b) = @{+shift}; | |
| 483 | my $subr = $subr{$meth} | |
| 484 | or die "Do not know how to ($meth) in symbolic"; | |
| 485 | $a = $a->num if ref $a eq __PACKAGE__; | |
| 486 | $b = $b->num if ref $b eq __PACKAGE__; | |
| 487 | $subr->($a,$b); | |
| 488 | } | |
| 489 | sub TIESCALAR { my $pack = shift; $pack->new(@_) } | |
| 490 | sub FETCH { shift } | |
| 491 | sub nop { } # Around a bug | |
| 492 | sub vars { my $p = shift; tie($_, $p), $_->nop foreach @_; } | |
| 493 | sub STORE { | |
| 494 | my $obj = shift; | |
| 495 | $#$obj = 1; | |
| 496 | @$obj->[0,1] = ('=', shift); | |
| 497 | } | |
| 498 | } | |
| 499 | ||
| 500 | { | |
| 501 | my $foo = new symbolic 11; | |
| 502 | my $baz = $foo++; | |
| 503 | test( (sprintf "%d", $foo), '12'); | |
| 504 | test( (sprintf "%d", $baz), '11'); | |
| 505 | my $bar = $foo; | |
| 506 | $baz = ++$foo; | |
| 507 | test( (sprintf "%d", $foo), '13'); | |
| 508 | test( (sprintf "%d", $bar), '12'); | |
| 509 | test( (sprintf "%d", $baz), '13'); | |
| 510 | my $ban = $foo; | |
| 511 | $baz = ($foo += 1); | |
| 512 | test( (sprintf "%d", $foo), '14'); | |
| 513 | test( (sprintf "%d", $bar), '12'); | |
| 514 | test( (sprintf "%d", $baz), '14'); | |
| 515 | test( (sprintf "%d", $ban), '13'); | |
| 516 | $baz = 0; | |
| 517 | $baz = $foo++; | |
| 518 | test( (sprintf "%d", $foo), '15'); | |
| 519 | test( (sprintf "%d", $baz), '14'); | |
| 520 | test( "$foo", '[++ [+= [++ [++ [n 11] 1] 1] 1] 1]'); | |
| 521 | } | |
| 522 | ||
| 523 | { | |
| 524 | my $iter = new symbolic 2; | |
| 525 | my $side = new symbolic 1; | |
| 526 | my $cnt = $iter; | |
| 527 | ||
| 528 | while ($cnt) { | |
| 529 | $cnt = $cnt - 1; # The "simple" way | |
| 530 | $side = (sqrt(1 + $side**2) - 1)/$side; | |
| 531 | } | |
| 532 | my $pi = $side*(2**($iter+2)); | |
| 533 | test "$side", '[/ [- [sqrt [+ 1 [** [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]] 2]]] 1] [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]]]'; | |
| 534 | test( (sprintf "%f", $pi), '3.182598'); | |
| 535 | } | |
| 536 | ||
| 537 | { | |
| 538 | my $iter = new symbolic 2; | |
| 539 | my $side = new symbolic 1; | |
| 540 | my $cnt = $iter; | |
| 541 | ||
| 542 | while ($cnt--) { | |
| 543 | $side = (sqrt(1 + $side**2) - 1)/$side; | |
| 544 | } | |
| 545 | my $pi = $side*(2**($iter+2)); | |
| 546 | test "$side", '[/ [- [sqrt [+ 1 [** [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]] 2]]] 1] [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]]]'; | |
| 547 | test( (sprintf "%f", $pi), '3.182598'); | |
| 548 | } | |
| 549 | ||
| 550 | { | |
| 551 | my ($a, $b); | |
| 552 | symbolic->vars($a, $b); | |
| 553 | my $c = sqrt($a**2 + $b**2); | |
| 554 | $a = 3; $b = 4; | |
| 555 | test( (sprintf "%d", $c), '5'); | |
| 556 | $a = 12; $b = 5; | |
| 557 | test( (sprintf "%d", $c), '13'); | |
| 558 | } | |
| 559 | ||
| 560 | { | |
| 561 | package symbolic1; # Primitive symbolic calculator | |
| 562 | # Mutator inc/dec | |
| 563 | use overload nomethod => \&wrap, '""' => \&str, '0+' => \&num, '=' => \&cpy; | |
| 564 | ||
| 565 | sub new { shift; bless ['n', @_] } | |
| 566 | sub cpy { | |
| 567 | my $self = shift; | |
| 568 | bless [@$self], ref $self; | |
| 569 | } | |
| 570 | sub wrap { | |
| 571 | my ($obj, $other, $inv, $meth) = @_; | |
| 572 | if ($meth eq '++' or $meth eq '--') { | |
| 573 | @$obj = ($meth, (bless [@$obj]), 1); # Avoid circular reference | |
| 574 | return $obj; | |
| 575 | } | |
| 576 | ($obj, $other) = ($other, $obj) if $inv; | |
| 577 | bless [$meth, $obj, $other]; | |
| 578 | } | |
| 579 | sub str { | |
| 580 | my ($meth, $a, $b) = @{+shift}; | |
| 581 | $a = 'u' unless defined $a; | |
| 582 | if (defined $b) { | |
| 583 | "[$meth $a $b]"; | |
| 584 | } else { | |
| 585 | "[$meth $a]"; | |
| 586 | } | |
| 587 | } | |
| 588 | my %subr = ( 'n' => sub {$_[0]} ); | |
| 589 | foreach my $op (split " ", $overload::ops{with_assign}) { | |
| 590 | $subr{$op} = $subr{"$op="} = eval "sub {shift() $op shift()}"; | |
| 591 | } | |
| 592 | my @bins = qw(binary 3way_comparison num_comparison str_comparison); | |
| 593 | foreach my $op (split " ", "@overload::ops{ @bins }") { | |
| 594 | $subr{$op} = eval "sub {shift() $op shift()}"; | |
| 595 | } | |
| 596 | foreach my $op (split " ", "@overload::ops{qw(unary func)}") { | |
| 597 | $subr{$op} = eval "sub {$op shift()}"; | |
| 598 | } | |
| 599 | $subr{'++'} = $subr{'+'}; | |
| 600 | $subr{'--'} = $subr{'-'}; | |
| 601 | ||
| 602 | sub num { | |
| 603 | my ($meth, $a, $b) = @{+shift}; | |
| 604 | my $subr = $subr{$meth} | |
| 605 | or die "Do not know how to ($meth) in symbolic"; | |
| 606 | $a = $a->num if ref $a eq __PACKAGE__; | |
| 607 | $b = $b->num if ref $b eq __PACKAGE__; | |
| 608 | $subr->($a,$b); | |
| 609 | } | |
| 610 | sub TIESCALAR { my $pack = shift; $pack->new(@_) } | |
| 611 | sub FETCH { shift } | |
| 612 | sub nop { } # Around a bug | |
| 613 | sub vars { my $p = shift; tie($_, $p), $_->nop foreach @_; } | |
| 614 | sub STORE { | |
| 615 | my $obj = shift; | |
| 616 | $#$obj = 1; | |
| 617 | @$obj->[0,1] = ('=', shift); | |
| 618 | } | |
| 619 | } | |
| 620 | ||
| 621 | { | |
| 622 | my $foo = new symbolic1 11; | |
| 623 | my $baz = $foo++; | |
| 624 | test( (sprintf "%d", $foo), '12'); | |
| 625 | test( (sprintf "%d", $baz), '11'); | |
| 626 | my $bar = $foo; | |
| 627 | $baz = ++$foo; | |
| 628 | test( (sprintf "%d", $foo), '13'); | |
| 629 | test( (sprintf "%d", $bar), '12'); | |
| 630 | test( (sprintf "%d", $baz), '13'); | |
| 631 | my $ban = $foo; | |
| 632 | $baz = ($foo += 1); | |
| 633 | test( (sprintf "%d", $foo), '14'); | |
| 634 | test( (sprintf "%d", $bar), '12'); | |
| 635 | test( (sprintf "%d", $baz), '14'); | |
| 636 | test( (sprintf "%d", $ban), '13'); | |
| 637 | $baz = 0; | |
| 638 | $baz = $foo++; | |
| 639 | test( (sprintf "%d", $foo), '15'); | |
| 640 | test( (sprintf "%d", $baz), '14'); | |
| 641 | test( "$foo", '[++ [+= [++ [++ [n 11] 1] 1] 1] 1]'); | |
| 642 | } | |
| 643 | ||
| 644 | { | |
| 645 | my $iter = new symbolic1 2; | |
| 646 | my $side = new symbolic1 1; | |
| 647 | my $cnt = $iter; | |
| 648 | ||
| 649 | while ($cnt) { | |
| 650 | $cnt = $cnt - 1; # The "simple" way | |
| 651 | $side = (sqrt(1 + $side**2) - 1)/$side; | |
| 652 | } | |
| 653 | my $pi = $side*(2**($iter+2)); | |
| 654 | test "$side", '[/ [- [sqrt [+ 1 [** [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]] 2]]] 1] [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]]]'; | |
| 655 | test( (sprintf "%f", $pi), '3.182598'); | |
| 656 | } | |
| 657 | ||
| 658 | { | |
| 659 | my $iter = new symbolic1 2; | |
| 660 | my $side = new symbolic1 1; | |
| 661 | my $cnt = $iter; | |
| 662 | ||
| 663 | while ($cnt--) { | |
| 664 | $side = (sqrt(1 + $side**2) - 1)/$side; | |
| 665 | } | |
| 666 | my $pi = $side*(2**($iter+2)); | |
| 667 | test "$side", '[/ [- [sqrt [+ 1 [** [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]] 2]]] 1] [/ [- [sqrt [+ 1 [** [n 1] 2]]] 1] [n 1]]]'; | |
| 668 | test( (sprintf "%f", $pi), '3.182598'); | |
| 669 | } | |
| 670 | ||
| 671 | { | |
| 672 | my ($a, $b); | |
| 673 | symbolic1->vars($a, $b); | |
| 674 | my $c = sqrt($a**2 + $b**2); | |
| 675 | $a = 3; $b = 4; | |
| 676 | test( (sprintf "%d", $c), '5'); | |
| 677 | $a = 12; $b = 5; | |
| 678 | test( (sprintf "%d", $c), '13'); | |
| 679 | } | |
| 680 | ||
| 681 | { | |
| 682 | package two_face; # Scalars with separate string and | |
| 683 | # numeric values. | |
| 684 | sub new { my $p = shift; bless [@_], $p } | |
| 685 | use overload '""' => \&str, '0+' => \&num, fallback => 1; | |
| 686 | sub num {shift->[1]} | |
| 687 | sub str {shift->[0]} | |
| 688 | } | |
| 689 | ||
| 690 | { | |
| 691 | my $seven = new two_face ("vii", 7); | |
| 692 | test( (sprintf "seven=$seven, seven=%d, eight=%d", $seven, $seven+1), | |
| 693 | 'seven=vii, seven=7, eight=8'); | |
| 694 | test( scalar ($seven =~ /i/), '1') | |
| 695 | } | |
| b3ac6de7 | 696 | |
| d0ecd44c IZ |
697 | { |
| 698 | package sorting; | |
| 699 | use overload 'cmp' => \∁ | |
| 700 | sub new { my ($p, $v) = @_; bless \$v, $p } | |
| 701 | sub comp { my ($x,$y) = @_; ($$x * 3 % 10) <=> ($$y * 3 % 10) or $$x cmp $$y } | |
| 702 | } | |
| 703 | { | |
| 704 | my @arr = map sorting->new($_), 0..12; | |
| 705 | my @sorted1 = sort @arr; | |
| 706 | my @sorted2 = map $$_, @sorted1; | |
| 707 | test "@sorted2", '0 10 7 4 1 11 8 5 12 2 9 6 3'; | |
| 708 | } | |
| f5284f61 IZ |
709 | { |
| 710 | package iterator; | |
| 711 | use overload '<>' => \&iter; | |
| 712 | sub new { my ($p, $v) = @_; bless \$v, $p } | |
| 713 | sub iter { my ($x) = @_; return undef if $$x < 0; return $$x--; } | |
| 714 | } | |
| 72b16652 GS |
715 | |
| 716 | # XXX iterator overload not intended to work with CORE::GLOBAL? | |
| 717 | if (defined &CORE::GLOBAL::glob) { | |
| 718 | test '1', '1'; # 175 | |
| 719 | test '1', '1'; # 176 | |
| 720 | test '1', '1'; # 177 | |
| 721 | } | |
| 722 | else { | |
| f5284f61 IZ |
723 | my $iter = iterator->new(5); |
| 724 | my $acc = ''; | |
| 725 | my $out; | |
| 726 | $acc .= " $out" while $out = <${iter}>; | |
| 727 | test $acc, ' 5 4 3 2 1 0'; # 175 | |
| 728 | $iter = iterator->new(5); | |
| 729 | test scalar <${iter}>, '5'; # 176 | |
| 730 | $acc = ''; | |
| 731 | $acc .= " $out" while $out = <$iter>; | |
| 732 | test $acc, ' 4 3 2 1 0'; # 177 | |
| 733 | } | |
| 734 | { | |
| 735 | package deref; | |
| 736 | use overload '%{}' => \&hderef, '&{}' => \&cderef, | |
| 737 | '*{}' => \&gderef, '${}' => \&sderef, '@{}' => \&aderef; | |
| 738 | sub new { my ($p, $v) = @_; bless \$v, $p } | |
| 739 | sub deref { | |
| 740 | my ($self, $key) = (shift, shift); | |
| 741 | my $class = ref $self; | |
| 742 | bless $self, 'deref::dummy'; # Disable overloading of %{} | |
| 743 | my $out = $self->{$key}; | |
| 744 | bless $self, $class; # Restore overloading | |
| 745 | $out; | |
| 746 | } | |
| 747 | sub hderef {shift->deref('h')} | |
| 748 | sub aderef {shift->deref('a')} | |
| 749 | sub cderef {shift->deref('c')} | |
| 750 | sub gderef {shift->deref('g')} | |
| 751 | sub sderef {shift->deref('s')} | |
| 752 | } | |
| 753 | { | |
| 754 | my $deref = bless { h => { foo => 5 , fake => 23 }, | |
| 755 | c => sub {return shift() + 34}, | |
| 756 | 's' => \123, | |
| 757 | a => [11..13], | |
| 758 | g => \*srt, | |
| 759 | }, 'deref'; | |
| 760 | # Hash: | |
| 761 | my @cont = sort %$deref; | |
| 762 | test "@cont", '23 5 fake foo'; # 178 | |
| 763 | my @keys = sort keys %$deref; | |
| 764 | test "@keys", 'fake foo'; # 179 | |
| 765 | my @val = sort values %$deref; | |
| 766 | test "@val", '23 5'; # 180 | |
| 767 | test $deref->{foo}, 5; # 181 | |
| 768 | test defined $deref->{bar}, ''; # 182 | |
| 769 | my $key; | |
| 770 | @keys = (); | |
| 771 | push @keys, $key while $key = each %$deref; | |
| 772 | @keys = sort @keys; | |
| 773 | test "@keys", 'fake foo'; # 183 | |
| 774 | test exists $deref->{bar}, ''; # 184 | |
| 775 | test exists $deref->{foo}, 1; # 185 | |
| 776 | # Code: | |
| 777 | test $deref->(5), 39; # 186 | |
| 778 | test &$deref(6), 40; # 187 | |
| 779 | sub xxx_goto { goto &$deref } | |
| 780 | test xxx_goto(7), 41; # 188 | |
| 781 | my $srt = bless { c => sub {$b <=> $a} | |
| 782 | }, 'deref'; | |
| 783 | *srt = \&$srt; | |
| 784 | my @sorted = sort srt 11, 2, 5, 1, 22; | |
| 785 | test "@sorted", '22 11 5 2 1'; # 189 | |
| 786 | # Scalar | |
| 787 | test $$deref, 123; # 190 | |
| c6e96bcb GS |
788 | # Code |
| 789 | @sorted = sort $srt 11, 2, 5, 1, 22; | |
| f5284f61 IZ |
790 | test "@sorted", '22 11 5 2 1'; # 191 |
| 791 | # Array | |
| 792 | test "@$deref", '11 12 13'; # 192 | |
| 793 | test $#$deref, '2'; # 193 | |
| 794 | my $l = @$deref; | |
| 795 | test $l, 3; # 194 | |
| 796 | test $deref->[2], '13'; # 195 | |
| 797 | $l = pop @$deref; | |
| 798 | test $l, 13; # 196 | |
| 799 | $l = 1; | |
| 800 | test $deref->[$l], '12'; # 197 | |
| 801 | # Repeated dereference | |
| 802 | my $double = bless { h => $deref, | |
| 803 | }, 'deref'; | |
| 804 | test $double->{foo}, 5; # 198 | |
| 805 | } | |
| 806 | ||
| 807 | { | |
| 808 | package two_refs; | |
| 809 | use overload '%{}' => \&gethash, '@{}' => sub { ${shift()} }; | |
| 810 | sub new { | |
| 811 | my $p = shift; | |
| 812 | bless \ [@_], $p; | |
| 813 | } | |
| 814 | sub gethash { | |
| 815 | my %h; | |
| 816 | my $self = shift; | |
| 817 | tie %h, ref $self, $self; | |
| 818 | \%h; | |
| 819 | } | |
| 820 | ||
| 821 | sub TIEHASH { my $p = shift; bless \ shift, $p } | |
| 822 | my %fields; | |
| 823 | my $i = 0; | |
| 824 | $fields{$_} = $i++ foreach qw{zero one two three}; | |
| 825 | sub STORE { | |
| 826 | my $self = ${shift()}; | |
| 827 | my $key = $fields{shift()}; | |
| 828 | defined $key or die "Out of band access"; | |
| 829 | $$self->[$key] = shift; | |
| 830 | } | |
| 831 | sub FETCH { | |
| 832 | my $self = ${shift()}; | |
| 833 | my $key = $fields{shift()}; | |
| 834 | defined $key or die "Out of band access"; | |
| 835 | $$self->[$key]; | |
| 836 | } | |
| 837 | } | |
| 838 | ||
| 839 | my $bar = new two_refs 3,4,5,6; | |
| 840 | $bar->[2] = 11; | |
| 841 | test $bar->{two}, 11; # 199 | |
| 842 | $bar->{three} = 13; | |
| 843 | test $bar->[3], 13; # 200 | |
| 844 | ||
| 845 | { | |
| 846 | package two_refs_o; | |
| 847 | @ISA = ('two_refs'); | |
| 848 | } | |
| 849 | ||
| 850 | $bar = new two_refs_o 3,4,5,6; | |
| 851 | $bar->[2] = 11; | |
| 852 | test $bar->{two}, 11; # 201 | |
| 853 | $bar->{three} = 13; | |
| 854 | test $bar->[3], 13; # 202 | |
| 855 | ||
| 856 | { | |
| 857 | package two_refs1; | |
| 858 | use overload '%{}' => sub { ${shift()}->[1] }, | |
| 859 | '@{}' => sub { ${shift()}->[0] }; | |
| 860 | sub new { | |
| 861 | my $p = shift; | |
| 862 | my $a = [@_]; | |
| 863 | my %h; | |
| 864 | tie %h, $p, $a; | |
| 865 | bless \ [$a, \%h], $p; | |
| 866 | } | |
| 867 | sub gethash { | |
| 868 | my %h; | |
| 869 | my $self = shift; | |
| 870 | tie %h, ref $self, $self; | |
| 871 | \%h; | |
| 872 | } | |
| 873 | ||
| 874 | sub TIEHASH { my $p = shift; bless \ shift, $p } | |
| 875 | my %fields; | |
| 876 | my $i = 0; | |
| 877 | $fields{$_} = $i++ foreach qw{zero one two three}; | |
| 878 | sub STORE { | |
| 879 | my $a = ${shift()}; | |
| 880 | my $key = $fields{shift()}; | |
| 881 | defined $key or die "Out of band access"; | |
| 882 | $a->[$key] = shift; | |
| 883 | } | |
| 884 | sub FETCH { | |
| 885 | my $a = ${shift()}; | |
| 886 | my $key = $fields{shift()}; | |
| 887 | defined $key or die "Out of band access"; | |
| 888 | $a->[$key]; | |
| 889 | } | |
| 890 | } | |
| 891 | ||
| 892 | $bar = new two_refs_o 3,4,5,6; | |
| 893 | $bar->[2] = 11; | |
| 894 | test $bar->{two}, 11; # 203 | |
| 895 | $bar->{three} = 13; | |
| 896 | test $bar->[3], 13; # 204 | |
| 897 | ||
| 898 | { | |
| 899 | package two_refs1_o; | |
| 900 | @ISA = ('two_refs1'); | |
| 901 | } | |
| 902 | ||
| 903 | $bar = new two_refs1_o 3,4,5,6; | |
| 904 | $bar->[2] = 11; | |
| 905 | test $bar->{two}, 11; # 205 | |
| 906 | $bar->{three} = 13; | |
| 907 | test $bar->[3], 13; # 206 | |
| 908 | ||
| fe7ac86a IZ |
909 | { |
| 910 | package B; | |
| 911 | use overload bool => sub { ${+shift} }; | |
| 912 | } | |
| 913 | ||
| 914 | my $aaa; | |
| 915 | { my $bbbb = 0; $aaa = bless \$bbbb, B } | |
| 916 | ||
| 917 | test !$aaa, 1; | |
| 918 | ||
| 919 | unless ($aaa) { | |
| 920 | test 'ok', 'ok'; | |
| 921 | } else { | |
| 922 | test 'is not', 'ok'; | |
| 923 | } | |
| 924 | ||
| 925 | ||
| 8ebc5c01 | 926 | # Last test is: |
| fe7ac86a | 927 | sub last {208} |