| 1 | /* universal.c |
| 2 | * |
| 3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 4 | * 2005, 2006, 2007, 2008 by Larry Wall and others |
| 5 | * |
| 6 | * You may distribute under the terms of either the GNU General Public |
| 7 | * License or the Artistic License, as specified in the README file. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * '"The roots of those mountains must be roots indeed; there must be |
| 13 | * great secrets buried there which have not been discovered since the |
| 14 | * beginning."' --Gandalf, relating Gollum's history |
| 15 | * |
| 16 | * [p.54 of _The Lord of the Rings_, I/ii: "The Shadow of the Past"] |
| 17 | */ |
| 18 | |
| 19 | /* This file contains the code that implements the functions in Perl's |
| 20 | * UNIVERSAL package, such as UNIVERSAL->can(). |
| 21 | * |
| 22 | * It is also used to store XS functions that need to be present in |
| 23 | * miniperl for a lack of a better place to put them. It might be |
| 24 | * clever to move them to seperate XS files which would then be pulled |
| 25 | * in by some to-be-written build process. |
| 26 | */ |
| 27 | |
| 28 | #include "EXTERN.h" |
| 29 | #define PERL_IN_UNIVERSAL_C |
| 30 | #include "perl.h" |
| 31 | |
| 32 | #ifdef USE_PERLIO |
| 33 | #include "perliol.h" /* For the PERLIO_F_XXX */ |
| 34 | #endif |
| 35 | |
| 36 | /* |
| 37 | * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com> |
| 38 | * The main guts of traverse_isa was actually copied from gv_fetchmeth |
| 39 | */ |
| 40 | |
| 41 | STATIC bool |
| 42 | S_isa_lookup(pTHX_ HV *stash, const char * const name) |
| 43 | { |
| 44 | dVAR; |
| 45 | const struct mro_meta *const meta = HvMROMETA(stash); |
| 46 | HV *isa = meta->isa; |
| 47 | STRLEN len = strlen(name); |
| 48 | const HV *our_stash; |
| 49 | |
| 50 | PERL_ARGS_ASSERT_ISA_LOOKUP; |
| 51 | |
| 52 | if (!isa) { |
| 53 | (void)mro_get_linear_isa(stash); |
| 54 | isa = meta->isa; |
| 55 | } |
| 56 | |
| 57 | if (hv_common(isa, NULL, name, len, 0 /* No "UTF-8" flag possible with only |
| 58 | a char * argument*/, |
| 59 | HV_FETCH_ISEXISTS, NULL, 0)) { |
| 60 | /* Direct name lookup worked. */ |
| 61 | return TRUE; |
| 62 | } |
| 63 | |
| 64 | /* A stash/class can go by many names (ie. User == main::User), so |
| 65 | we use the HvENAME in the stash itself, which is canonical, falling |
| 66 | back to HvNAME if necessary. */ |
| 67 | our_stash = gv_stashpvn(name, len, 0); |
| 68 | |
| 69 | if (our_stash) { |
| 70 | HEK *canon_name = HvENAME_HEK(our_stash); |
| 71 | if (!canon_name) canon_name = HvNAME_HEK(our_stash); |
| 72 | |
| 73 | if (hv_common(isa, NULL, HEK_KEY(canon_name), HEK_LEN(canon_name), |
| 74 | HEK_FLAGS(canon_name), |
| 75 | HV_FETCH_ISEXISTS, NULL, HEK_HASH(canon_name))) { |
| 76 | return TRUE; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | return FALSE; |
| 81 | } |
| 82 | |
| 83 | /* |
| 84 | =head1 SV Manipulation Functions |
| 85 | |
| 86 | =for apidoc sv_derived_from |
| 87 | |
| 88 | Returns a boolean indicating whether the SV is derived from the specified class |
| 89 | I<at the C level>. To check derivation at the Perl level, call C<isa()> as a |
| 90 | normal Perl method. |
| 91 | |
| 92 | =cut |
| 93 | */ |
| 94 | |
| 95 | bool |
| 96 | Perl_sv_derived_from(pTHX_ SV *sv, const char *const name) |
| 97 | { |
| 98 | dVAR; |
| 99 | HV *stash; |
| 100 | |
| 101 | PERL_ARGS_ASSERT_SV_DERIVED_FROM; |
| 102 | |
| 103 | SvGETMAGIC(sv); |
| 104 | |
| 105 | if (SvROK(sv)) { |
| 106 | const char *type; |
| 107 | sv = SvRV(sv); |
| 108 | type = sv_reftype(sv,0); |
| 109 | if (type && strEQ(type,name)) |
| 110 | return TRUE; |
| 111 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; |
| 112 | } |
| 113 | else { |
| 114 | stash = gv_stashsv(sv, 0); |
| 115 | } |
| 116 | |
| 117 | return stash ? isa_lookup(stash, name) : FALSE; |
| 118 | } |
| 119 | |
| 120 | /* |
| 121 | =for apidoc sv_does |
| 122 | |
| 123 | Returns a boolean indicating whether the SV performs a specific, named role. |
| 124 | The SV can be a Perl object or the name of a Perl class. |
| 125 | |
| 126 | =cut |
| 127 | */ |
| 128 | |
| 129 | #include "XSUB.h" |
| 130 | |
| 131 | bool |
| 132 | Perl_sv_does(pTHX_ SV *sv, const char *const name) |
| 133 | { |
| 134 | const char *classname; |
| 135 | bool does_it; |
| 136 | SV *methodname; |
| 137 | dSP; |
| 138 | |
| 139 | PERL_ARGS_ASSERT_SV_DOES; |
| 140 | |
| 141 | ENTER; |
| 142 | SAVETMPS; |
| 143 | |
| 144 | SvGETMAGIC(sv); |
| 145 | |
| 146 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 147 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) { |
| 148 | LEAVE; |
| 149 | return FALSE; |
| 150 | } |
| 151 | |
| 152 | if (sv_isobject(sv)) { |
| 153 | classname = sv_reftype(SvRV(sv),TRUE); |
| 154 | } else { |
| 155 | classname = SvPV_nolen(sv); |
| 156 | } |
| 157 | |
| 158 | if (strEQ(name,classname)) { |
| 159 | LEAVE; |
| 160 | return TRUE; |
| 161 | } |
| 162 | |
| 163 | PUSHMARK(SP); |
| 164 | XPUSHs(sv); |
| 165 | mXPUSHs(newSVpv(name, 0)); |
| 166 | PUTBACK; |
| 167 | |
| 168 | methodname = newSVpvs_flags("isa", SVs_TEMP); |
| 169 | /* ugly hack: use the SvSCREAM flag so S_method_common |
| 170 | * can figure out we're calling DOES() and not isa(), |
| 171 | * and report eventual errors correctly. --rgs */ |
| 172 | SvSCREAM_on(methodname); |
| 173 | call_sv(methodname, G_SCALAR | G_METHOD); |
| 174 | SPAGAIN; |
| 175 | |
| 176 | does_it = SvTRUE( TOPs ); |
| 177 | FREETMPS; |
| 178 | LEAVE; |
| 179 | |
| 180 | return does_it; |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | =for apidoc croak_xs_usage |
| 185 | |
| 186 | A specialised variant of C<croak()> for emitting the usage message for xsubs |
| 187 | |
| 188 | croak_xs_usage(cv, "eee_yow"); |
| 189 | |
| 190 | works out the package name and subroutine name from C<cv>, and then calls |
| 191 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: |
| 192 | |
| 193 | Perl_croak(aTHX_ "Usage: %s::%s(%s)", "ouch" "awk", "eee_yow"); |
| 194 | |
| 195 | =cut |
| 196 | */ |
| 197 | |
| 198 | void |
| 199 | Perl_croak_xs_usage(pTHX_ const CV *const cv, const char *const params) |
| 200 | { |
| 201 | const GV *const gv = CvGV(cv); |
| 202 | |
| 203 | PERL_ARGS_ASSERT_CROAK_XS_USAGE; |
| 204 | |
| 205 | if (gv) { |
| 206 | const char *const gvname = GvNAME(gv); |
| 207 | const HV *const stash = GvSTASH(gv); |
| 208 | const char *const hvname = stash ? HvNAME_get(stash) : NULL; |
| 209 | |
| 210 | if (hvname) |
| 211 | Perl_croak(aTHX_ "Usage: %s::%s(%s)", hvname, gvname, params); |
| 212 | else |
| 213 | Perl_croak(aTHX_ "Usage: %s(%s)", gvname, params); |
| 214 | } else { |
| 215 | /* Pants. I don't think that it should be possible to get here. */ |
| 216 | Perl_croak(aTHX_ "Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | XS(XS_UNIVERSAL_isa) |
| 221 | { |
| 222 | dVAR; |
| 223 | dXSARGS; |
| 224 | |
| 225 | if (items != 2) |
| 226 | croak_xs_usage(cv, "reference, kind"); |
| 227 | else { |
| 228 | SV * const sv = ST(0); |
| 229 | const char *name; |
| 230 | |
| 231 | SvGETMAGIC(sv); |
| 232 | |
| 233 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 234 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
| 235 | XSRETURN_UNDEF; |
| 236 | |
| 237 | name = SvPV_nolen_const(ST(1)); |
| 238 | |
| 239 | ST(0) = boolSV(sv_derived_from(sv, name)); |
| 240 | XSRETURN(1); |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | XS(XS_UNIVERSAL_can) |
| 245 | { |
| 246 | dVAR; |
| 247 | dXSARGS; |
| 248 | SV *sv; |
| 249 | const char *name; |
| 250 | SV *rv; |
| 251 | HV *pkg = NULL; |
| 252 | |
| 253 | if (items != 2) |
| 254 | croak_xs_usage(cv, "object-ref, method"); |
| 255 | |
| 256 | sv = ST(0); |
| 257 | |
| 258 | SvGETMAGIC(sv); |
| 259 | |
| 260 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 261 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
| 262 | XSRETURN_UNDEF; |
| 263 | |
| 264 | name = SvPV_nolen_const(ST(1)); |
| 265 | rv = &PL_sv_undef; |
| 266 | |
| 267 | if (SvROK(sv)) { |
| 268 | sv = MUTABLE_SV(SvRV(sv)); |
| 269 | if (SvOBJECT(sv)) |
| 270 | pkg = SvSTASH(sv); |
| 271 | } |
| 272 | else { |
| 273 | pkg = gv_stashsv(sv, 0); |
| 274 | } |
| 275 | |
| 276 | if (pkg) { |
| 277 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
| 278 | if (gv && isGV(gv)) |
| 279 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
| 280 | } |
| 281 | |
| 282 | ST(0) = rv; |
| 283 | XSRETURN(1); |
| 284 | } |
| 285 | |
| 286 | XS(XS_UNIVERSAL_DOES) |
| 287 | { |
| 288 | dVAR; |
| 289 | dXSARGS; |
| 290 | PERL_UNUSED_ARG(cv); |
| 291 | |
| 292 | if (items != 2) |
| 293 | Perl_croak(aTHX_ "Usage: invocant->DOES(kind)"); |
| 294 | else { |
| 295 | SV * const sv = ST(0); |
| 296 | const char *name; |
| 297 | |
| 298 | name = SvPV_nolen_const(ST(1)); |
| 299 | if (sv_does( sv, name )) |
| 300 | XSRETURN_YES; |
| 301 | |
| 302 | XSRETURN_NO; |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | XS(XS_UNIVERSAL_VERSION) |
| 307 | { |
| 308 | dVAR; |
| 309 | dXSARGS; |
| 310 | HV *pkg; |
| 311 | GV **gvp; |
| 312 | GV *gv; |
| 313 | SV *sv; |
| 314 | const char *undef; |
| 315 | PERL_UNUSED_ARG(cv); |
| 316 | |
| 317 | if (SvROK(ST(0))) { |
| 318 | sv = MUTABLE_SV(SvRV(ST(0))); |
| 319 | if (!SvOBJECT(sv)) |
| 320 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
| 321 | pkg = SvSTASH(sv); |
| 322 | } |
| 323 | else { |
| 324 | pkg = gv_stashsv(ST(0), 0); |
| 325 | } |
| 326 | |
| 327 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
| 328 | |
| 329 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
| 330 | SV * const nsv = sv_newmortal(); |
| 331 | sv_setsv(nsv, sv); |
| 332 | sv = nsv; |
| 333 | if ( !sv_derived_from(sv, "version")) |
| 334 | upg_version(sv, FALSE); |
| 335 | undef = NULL; |
| 336 | } |
| 337 | else { |
| 338 | sv = &PL_sv_undef; |
| 339 | undef = "(undef)"; |
| 340 | } |
| 341 | |
| 342 | if (items > 1) { |
| 343 | SV *req = ST(1); |
| 344 | |
| 345 | if (undef) { |
| 346 | if (pkg) { |
| 347 | const char * const name = HvNAME_get(pkg); |
| 348 | Perl_croak(aTHX_ |
| 349 | "%s does not define $%s::VERSION--version check failed", |
| 350 | name, name); |
| 351 | } else { |
| 352 | Perl_croak(aTHX_ |
| 353 | "%s defines neither package nor VERSION--version check failed", |
| 354 | SvPVx_nolen_const(ST(0)) ); |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | if ( !sv_derived_from(req, "version")) { |
| 359 | /* req may very well be R/O, so create a new object */ |
| 360 | req = sv_2mortal( new_version(req) ); |
| 361 | } |
| 362 | |
| 363 | if ( vcmp( req, sv ) > 0 ) { |
| 364 | if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) { |
| 365 | Perl_croak(aTHX_ "%s version %"SVf" required--" |
| 366 | "this is only version %"SVf"", HvNAME_get(pkg), |
| 367 | SVfARG(sv_2mortal(vnormal(req))), |
| 368 | SVfARG(sv_2mortal(vnormal(sv)))); |
| 369 | } else { |
| 370 | Perl_croak(aTHX_ "%s version %"SVf" required--" |
| 371 | "this is only version %"SVf"", HvNAME_get(pkg), |
| 372 | SVfARG(sv_2mortal(vstringify(req))), |
| 373 | SVfARG(sv_2mortal(vstringify(sv)))); |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | } |
| 378 | |
| 379 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
| 380 | ST(0) = sv_2mortal(vstringify(sv)); |
| 381 | } else { |
| 382 | ST(0) = sv; |
| 383 | } |
| 384 | |
| 385 | XSRETURN(1); |
| 386 | } |
| 387 | |
| 388 | XS(XS_version_new) |
| 389 | { |
| 390 | dVAR; |
| 391 | dXSARGS; |
| 392 | if (items > 3) |
| 393 | croak_xs_usage(cv, "class, version"); |
| 394 | SP -= items; |
| 395 | { |
| 396 | SV *vs = ST(1); |
| 397 | SV *rv; |
| 398 | const char * const classname = |
| 399 | sv_isobject(ST(0)) /* get the class if called as an object method */ |
| 400 | ? HvNAME(SvSTASH(SvRV(ST(0)))) |
| 401 | : (char *)SvPV_nolen(ST(0)); |
| 402 | |
| 403 | if ( items == 1 || ! SvOK(vs) ) { /* no param or explicit undef */ |
| 404 | /* create empty object */ |
| 405 | vs = sv_newmortal(); |
| 406 | sv_setpvs(vs, "0"); |
| 407 | } |
| 408 | else if ( items == 3 ) { |
| 409 | vs = sv_newmortal(); |
| 410 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
| 411 | } |
| 412 | |
| 413 | rv = new_version(vs); |
| 414 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
| 415 | sv_bless(rv, gv_stashpv(classname, GV_ADD)); |
| 416 | |
| 417 | mPUSHs(rv); |
| 418 | PUTBACK; |
| 419 | return; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | XS(XS_version_stringify) |
| 424 | { |
| 425 | dVAR; |
| 426 | dXSARGS; |
| 427 | if (items < 1) |
| 428 | croak_xs_usage(cv, "lobj, ..."); |
| 429 | SP -= items; |
| 430 | { |
| 431 | SV * lobj = ST(0); |
| 432 | |
| 433 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 434 | lobj = SvRV(lobj); |
| 435 | } |
| 436 | else |
| 437 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 438 | |
| 439 | mPUSHs(vstringify(lobj)); |
| 440 | |
| 441 | PUTBACK; |
| 442 | return; |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | XS(XS_version_numify) |
| 447 | { |
| 448 | dVAR; |
| 449 | dXSARGS; |
| 450 | if (items < 1) |
| 451 | croak_xs_usage(cv, "lobj, ..."); |
| 452 | SP -= items; |
| 453 | { |
| 454 | SV * lobj = ST(0); |
| 455 | |
| 456 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 457 | lobj = SvRV(lobj); |
| 458 | } |
| 459 | else |
| 460 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 461 | |
| 462 | mPUSHs(vnumify(lobj)); |
| 463 | |
| 464 | PUTBACK; |
| 465 | return; |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | XS(XS_version_normal) |
| 470 | { |
| 471 | dVAR; |
| 472 | dXSARGS; |
| 473 | if (items < 1) |
| 474 | croak_xs_usage(cv, "lobj, ..."); |
| 475 | SP -= items; |
| 476 | { |
| 477 | SV * lobj = ST(0); |
| 478 | |
| 479 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 480 | lobj = SvRV(lobj); |
| 481 | } |
| 482 | else |
| 483 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 484 | |
| 485 | mPUSHs(vnormal(lobj)); |
| 486 | |
| 487 | PUTBACK; |
| 488 | return; |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | XS(XS_version_vcmp) |
| 493 | { |
| 494 | dVAR; |
| 495 | dXSARGS; |
| 496 | if (items < 1) |
| 497 | croak_xs_usage(cv, "lobj, ..."); |
| 498 | SP -= items; |
| 499 | { |
| 500 | SV * lobj = ST(0); |
| 501 | |
| 502 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 503 | lobj = SvRV(lobj); |
| 504 | } |
| 505 | else |
| 506 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 507 | |
| 508 | { |
| 509 | SV *rs; |
| 510 | SV *rvs; |
| 511 | SV * robj = ST(1); |
| 512 | const IV swap = (IV)SvIV(ST(2)); |
| 513 | |
| 514 | if ( ! sv_derived_from(robj, "version") ) |
| 515 | { |
| 516 | robj = new_version(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP)); |
| 517 | sv_2mortal(robj); |
| 518 | } |
| 519 | rvs = SvRV(robj); |
| 520 | |
| 521 | if ( swap ) |
| 522 | { |
| 523 | rs = newSViv(vcmp(rvs,lobj)); |
| 524 | } |
| 525 | else |
| 526 | { |
| 527 | rs = newSViv(vcmp(lobj,rvs)); |
| 528 | } |
| 529 | |
| 530 | mPUSHs(rs); |
| 531 | } |
| 532 | |
| 533 | PUTBACK; |
| 534 | return; |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | XS(XS_version_boolean) |
| 539 | { |
| 540 | dVAR; |
| 541 | dXSARGS; |
| 542 | if (items < 1) |
| 543 | croak_xs_usage(cv, "lobj, ..."); |
| 544 | SP -= items; |
| 545 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) { |
| 546 | SV * const lobj = SvRV(ST(0)); |
| 547 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
| 548 | mPUSHs(rs); |
| 549 | PUTBACK; |
| 550 | return; |
| 551 | } |
| 552 | else |
| 553 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 554 | } |
| 555 | |
| 556 | XS(XS_version_noop) |
| 557 | { |
| 558 | dVAR; |
| 559 | dXSARGS; |
| 560 | if (items < 1) |
| 561 | croak_xs_usage(cv, "lobj, ..."); |
| 562 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) |
| 563 | Perl_croak(aTHX_ "operation not supported with version object"); |
| 564 | else |
| 565 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 566 | #ifndef HASATTRIBUTE_NORETURN |
| 567 | XSRETURN_EMPTY; |
| 568 | #endif |
| 569 | } |
| 570 | |
| 571 | XS(XS_version_is_alpha) |
| 572 | { |
| 573 | dVAR; |
| 574 | dXSARGS; |
| 575 | if (items != 1) |
| 576 | croak_xs_usage(cv, "lobj"); |
| 577 | SP -= items; |
| 578 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) { |
| 579 | SV * const lobj = ST(0); |
| 580 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) ) |
| 581 | XSRETURN_YES; |
| 582 | else |
| 583 | XSRETURN_NO; |
| 584 | PUTBACK; |
| 585 | return; |
| 586 | } |
| 587 | else |
| 588 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 589 | } |
| 590 | |
| 591 | XS(XS_version_qv) |
| 592 | { |
| 593 | dVAR; |
| 594 | dXSARGS; |
| 595 | PERL_UNUSED_ARG(cv); |
| 596 | SP -= items; |
| 597 | { |
| 598 | SV * ver = ST(0); |
| 599 | SV * rv; |
| 600 | const char * classname = ""; |
| 601 | if ( items == 2 && SvOK(ST(1)) ) { |
| 602 | /* getting called as object or class method */ |
| 603 | ver = ST(1); |
| 604 | classname = |
| 605 | sv_isobject(ST(0)) /* class called as an object method */ |
| 606 | ? HvNAME_get(SvSTASH(SvRV(ST(0)))) |
| 607 | : (char *)SvPV_nolen(ST(0)); |
| 608 | } |
| 609 | if ( !SvVOK(ver) ) { /* not already a v-string */ |
| 610 | rv = sv_newmortal(); |
| 611 | sv_setsv(rv,ver); /* make a duplicate */ |
| 612 | upg_version(rv, TRUE); |
| 613 | } else { |
| 614 | rv = sv_2mortal(new_version(ver)); |
| 615 | } |
| 616 | if ( items == 2 && strcmp(classname,"version") ) { /* inherited new() */ |
| 617 | sv_bless(rv, gv_stashpv(classname, GV_ADD)); |
| 618 | } |
| 619 | PUSHs(rv); |
| 620 | } |
| 621 | PUTBACK; |
| 622 | return; |
| 623 | } |
| 624 | |
| 625 | XS(XS_version_is_qv) |
| 626 | { |
| 627 | dVAR; |
| 628 | dXSARGS; |
| 629 | if (items != 1) |
| 630 | croak_xs_usage(cv, "lobj"); |
| 631 | SP -= items; |
| 632 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) { |
| 633 | SV * const lobj = ST(0); |
| 634 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) ) |
| 635 | XSRETURN_YES; |
| 636 | else |
| 637 | XSRETURN_NO; |
| 638 | PUTBACK; |
| 639 | return; |
| 640 | } |
| 641 | else |
| 642 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 643 | } |
| 644 | |
| 645 | XS(XS_utf8_is_utf8) |
| 646 | { |
| 647 | dVAR; |
| 648 | dXSARGS; |
| 649 | if (items != 1) |
| 650 | croak_xs_usage(cv, "sv"); |
| 651 | else { |
| 652 | SV * const sv = ST(0); |
| 653 | SvGETMAGIC(sv); |
| 654 | if (SvUTF8(sv)) |
| 655 | XSRETURN_YES; |
| 656 | else |
| 657 | XSRETURN_NO; |
| 658 | } |
| 659 | XSRETURN_EMPTY; |
| 660 | } |
| 661 | |
| 662 | XS(XS_utf8_valid) |
| 663 | { |
| 664 | dVAR; |
| 665 | dXSARGS; |
| 666 | if (items != 1) |
| 667 | croak_xs_usage(cv, "sv"); |
| 668 | else { |
| 669 | SV * const sv = ST(0); |
| 670 | STRLEN len; |
| 671 | const char * const s = SvPV_const(sv,len); |
| 672 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
| 673 | XSRETURN_YES; |
| 674 | else |
| 675 | XSRETURN_NO; |
| 676 | } |
| 677 | XSRETURN_EMPTY; |
| 678 | } |
| 679 | |
| 680 | XS(XS_utf8_encode) |
| 681 | { |
| 682 | dVAR; |
| 683 | dXSARGS; |
| 684 | if (items != 1) |
| 685 | croak_xs_usage(cv, "sv"); |
| 686 | sv_utf8_encode(ST(0)); |
| 687 | XSRETURN_EMPTY; |
| 688 | } |
| 689 | |
| 690 | XS(XS_utf8_decode) |
| 691 | { |
| 692 | dVAR; |
| 693 | dXSARGS; |
| 694 | if (items != 1) |
| 695 | croak_xs_usage(cv, "sv"); |
| 696 | else { |
| 697 | SV * const sv = ST(0); |
| 698 | const bool RETVAL = sv_utf8_decode(sv); |
| 699 | ST(0) = boolSV(RETVAL); |
| 700 | sv_2mortal(ST(0)); |
| 701 | } |
| 702 | XSRETURN(1); |
| 703 | } |
| 704 | |
| 705 | XS(XS_utf8_upgrade) |
| 706 | { |
| 707 | dVAR; |
| 708 | dXSARGS; |
| 709 | if (items != 1) |
| 710 | croak_xs_usage(cv, "sv"); |
| 711 | else { |
| 712 | SV * const sv = ST(0); |
| 713 | STRLEN RETVAL; |
| 714 | dXSTARG; |
| 715 | |
| 716 | RETVAL = sv_utf8_upgrade(sv); |
| 717 | XSprePUSH; PUSHi((IV)RETVAL); |
| 718 | } |
| 719 | XSRETURN(1); |
| 720 | } |
| 721 | |
| 722 | XS(XS_utf8_downgrade) |
| 723 | { |
| 724 | dVAR; |
| 725 | dXSARGS; |
| 726 | if (items < 1 || items > 2) |
| 727 | croak_xs_usage(cv, "sv, failok=0"); |
| 728 | else { |
| 729 | SV * const sv = ST(0); |
| 730 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
| 731 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
| 732 | |
| 733 | ST(0) = boolSV(RETVAL); |
| 734 | sv_2mortal(ST(0)); |
| 735 | } |
| 736 | XSRETURN(1); |
| 737 | } |
| 738 | |
| 739 | XS(XS_utf8_native_to_unicode) |
| 740 | { |
| 741 | dVAR; |
| 742 | dXSARGS; |
| 743 | const UV uv = SvUV(ST(0)); |
| 744 | |
| 745 | if (items > 1) |
| 746 | croak_xs_usage(cv, "sv"); |
| 747 | |
| 748 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
| 749 | XSRETURN(1); |
| 750 | } |
| 751 | |
| 752 | XS(XS_utf8_unicode_to_native) |
| 753 | { |
| 754 | dVAR; |
| 755 | dXSARGS; |
| 756 | const UV uv = SvUV(ST(0)); |
| 757 | |
| 758 | if (items > 1) |
| 759 | croak_xs_usage(cv, "sv"); |
| 760 | |
| 761 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
| 762 | XSRETURN(1); |
| 763 | } |
| 764 | |
| 765 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
| 766 | { |
| 767 | dVAR; |
| 768 | dXSARGS; |
| 769 | SV * const svz = ST(0); |
| 770 | SV * sv; |
| 771 | PERL_UNUSED_ARG(cv); |
| 772 | |
| 773 | /* [perl #77776] - called as &foo() not foo() */ |
| 774 | if (!SvROK(svz)) |
| 775 | croak_xs_usage(cv, "SCALAR[, ON]"); |
| 776 | |
| 777 | sv = SvRV(svz); |
| 778 | |
| 779 | if (items == 1) { |
| 780 | if (SvREADONLY(sv)) |
| 781 | XSRETURN_YES; |
| 782 | else |
| 783 | XSRETURN_NO; |
| 784 | } |
| 785 | else if (items == 2) { |
| 786 | if (SvTRUE(ST(1))) { |
| 787 | SvREADONLY_on(sv); |
| 788 | XSRETURN_YES; |
| 789 | } |
| 790 | else { |
| 791 | /* I hope you really know what you are doing. */ |
| 792 | SvREADONLY_off(sv); |
| 793 | XSRETURN_NO; |
| 794 | } |
| 795 | } |
| 796 | XSRETURN_UNDEF; /* Can't happen. */ |
| 797 | } |
| 798 | |
| 799 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
| 800 | { |
| 801 | dVAR; |
| 802 | dXSARGS; |
| 803 | SV * const svz = ST(0); |
| 804 | SV * sv; |
| 805 | PERL_UNUSED_ARG(cv); |
| 806 | |
| 807 | /* [perl #77776] - called as &foo() not foo() */ |
| 808 | if (!SvROK(svz)) |
| 809 | croak_xs_usage(cv, "SCALAR[, REFCOUNT]"); |
| 810 | |
| 811 | sv = SvRV(svz); |
| 812 | |
| 813 | if (items == 1) |
| 814 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
| 815 | else if (items == 2) { |
| 816 | /* I hope you really know what you are doing. */ |
| 817 | SvREFCNT(sv) = SvIV(ST(1)); |
| 818 | XSRETURN_IV(SvREFCNT(sv)); |
| 819 | } |
| 820 | XSRETURN_UNDEF; /* Can't happen. */ |
| 821 | } |
| 822 | |
| 823 | XS(XS_Internals_hv_clear_placehold) |
| 824 | { |
| 825 | dVAR; |
| 826 | dXSARGS; |
| 827 | |
| 828 | if (items != 1 || !SvROK(ST(0))) |
| 829 | croak_xs_usage(cv, "hv"); |
| 830 | else { |
| 831 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); |
| 832 | hv_clear_placeholders(hv); |
| 833 | XSRETURN(0); |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | XS(XS_PerlIO_get_layers) |
| 838 | { |
| 839 | dVAR; |
| 840 | dXSARGS; |
| 841 | if (items < 1 || items % 2 == 0) |
| 842 | croak_xs_usage(cv, "filehandle[,args]"); |
| 843 | #ifdef USE_PERLIO |
| 844 | { |
| 845 | SV * sv; |
| 846 | GV * gv; |
| 847 | IO * io; |
| 848 | bool input = TRUE; |
| 849 | bool details = FALSE; |
| 850 | |
| 851 | if (items > 1) { |
| 852 | SV * const *svp; |
| 853 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
| 854 | SV * const * const varp = svp; |
| 855 | SV * const * const valp = svp + 1; |
| 856 | STRLEN klen; |
| 857 | const char * const key = SvPV_const(*varp, klen); |
| 858 | |
| 859 | switch (*key) { |
| 860 | case 'i': |
| 861 | if (klen == 5 && memEQ(key, "input", 5)) { |
| 862 | input = SvTRUE(*valp); |
| 863 | break; |
| 864 | } |
| 865 | goto fail; |
| 866 | case 'o': |
| 867 | if (klen == 6 && memEQ(key, "output", 6)) { |
| 868 | input = !SvTRUE(*valp); |
| 869 | break; |
| 870 | } |
| 871 | goto fail; |
| 872 | case 'd': |
| 873 | if (klen == 7 && memEQ(key, "details", 7)) { |
| 874 | details = SvTRUE(*valp); |
| 875 | break; |
| 876 | } |
| 877 | goto fail; |
| 878 | default: |
| 879 | fail: |
| 880 | Perl_croak(aTHX_ |
| 881 | "get_layers: unknown argument '%s'", |
| 882 | key); |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | SP -= (items - 1); |
| 887 | } |
| 888 | |
| 889 | sv = POPs; |
| 890 | gv = MUTABLE_GV(sv); |
| 891 | |
| 892 | if (!isGV(sv)) { |
| 893 | if (SvROK(sv) && isGV(SvRV(sv))) |
| 894 | gv = MUTABLE_GV(SvRV(sv)); |
| 895 | else if (SvPOKp(sv)) |
| 896 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
| 897 | } |
| 898 | |
| 899 | if (gv && (io = GvIO(gv))) { |
| 900 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
| 901 | IoIFP(io) : IoOFP(io)); |
| 902 | I32 i; |
| 903 | const I32 last = av_len(av); |
| 904 | I32 nitem = 0; |
| 905 | |
| 906 | for (i = last; i >= 0; i -= 3) { |
| 907 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
| 908 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); |
| 909 | SV * const * const flgsvp = av_fetch(av, i, FALSE); |
| 910 | |
| 911 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
| 912 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); |
| 913 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
| 914 | |
| 915 | if (details) { |
| 916 | /* Indents of 5? Yuck. */ |
| 917 | /* We know that PerlIO_get_layers creates a new SV for |
| 918 | the name and flags, so we can just take a reference |
| 919 | and "steal" it when we free the AV below. */ |
| 920 | XPUSHs(namok |
| 921 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
| 922 | : &PL_sv_undef); |
| 923 | XPUSHs(argok |
| 924 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
| 925 | SvCUR(*argsvp), |
| 926 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) |
| 927 | | SVs_TEMP) |
| 928 | : &PL_sv_undef); |
| 929 | XPUSHs(flgok |
| 930 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
| 931 | : &PL_sv_undef); |
| 932 | nitem += 3; |
| 933 | } |
| 934 | else { |
| 935 | if (namok && argok) |
| 936 | XPUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
| 937 | SVfARG(*namsvp), |
| 938 | SVfARG(*argsvp)))); |
| 939 | else if (namok) |
| 940 | XPUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
| 941 | else |
| 942 | XPUSHs(&PL_sv_undef); |
| 943 | nitem++; |
| 944 | if (flgok) { |
| 945 | const IV flags = SvIVX(*flgsvp); |
| 946 | |
| 947 | if (flags & PERLIO_F_UTF8) { |
| 948 | XPUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
| 949 | nitem++; |
| 950 | } |
| 951 | } |
| 952 | } |
| 953 | } |
| 954 | |
| 955 | SvREFCNT_dec(av); |
| 956 | |
| 957 | XSRETURN(nitem); |
| 958 | } |
| 959 | } |
| 960 | #endif |
| 961 | |
| 962 | XSRETURN(0); |
| 963 | } |
| 964 | |
| 965 | XS(XS_Internals_hash_seed) |
| 966 | { |
| 967 | dVAR; |
| 968 | /* Using dXSARGS would also have dITEM and dSP, |
| 969 | * which define 2 unused local variables. */ |
| 970 | dAXMARK; |
| 971 | PERL_UNUSED_ARG(cv); |
| 972 | PERL_UNUSED_VAR(mark); |
| 973 | XSRETURN_UV(PERL_HASH_SEED); |
| 974 | } |
| 975 | |
| 976 | XS(XS_Internals_rehash_seed) |
| 977 | { |
| 978 | dVAR; |
| 979 | /* Using dXSARGS would also have dITEM and dSP, |
| 980 | * which define 2 unused local variables. */ |
| 981 | dAXMARK; |
| 982 | PERL_UNUSED_ARG(cv); |
| 983 | PERL_UNUSED_VAR(mark); |
| 984 | XSRETURN_UV(PL_rehash_seed); |
| 985 | } |
| 986 | |
| 987 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
| 988 | { |
| 989 | dVAR; |
| 990 | dXSARGS; |
| 991 | PERL_UNUSED_ARG(cv); |
| 992 | if (SvROK(ST(0))) { |
| 993 | const HV * const hv = (const HV *) SvRV(ST(0)); |
| 994 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
| 995 | if (HvREHASH(hv)) |
| 996 | XSRETURN_YES; |
| 997 | else |
| 998 | XSRETURN_NO; |
| 999 | } |
| 1000 | } |
| 1001 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
| 1002 | } |
| 1003 | |
| 1004 | XS(XS_re_is_regexp) |
| 1005 | { |
| 1006 | dVAR; |
| 1007 | dXSARGS; |
| 1008 | PERL_UNUSED_VAR(cv); |
| 1009 | |
| 1010 | if (items != 1) |
| 1011 | croak_xs_usage(cv, "sv"); |
| 1012 | |
| 1013 | if (SvRXOK(ST(0))) { |
| 1014 | XSRETURN_YES; |
| 1015 | } else { |
| 1016 | XSRETURN_NO; |
| 1017 | } |
| 1018 | } |
| 1019 | |
| 1020 | XS(XS_re_regnames_count) |
| 1021 | { |
| 1022 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1023 | SV * ret; |
| 1024 | dVAR; |
| 1025 | dXSARGS; |
| 1026 | |
| 1027 | if (items != 0) |
| 1028 | croak_xs_usage(cv, ""); |
| 1029 | |
| 1030 | SP -= items; |
| 1031 | PUTBACK; |
| 1032 | |
| 1033 | if (!rx) |
| 1034 | XSRETURN_UNDEF; |
| 1035 | |
| 1036 | ret = CALLREG_NAMED_BUFF_COUNT(rx); |
| 1037 | |
| 1038 | SPAGAIN; |
| 1039 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); |
| 1040 | XSRETURN(1); |
| 1041 | } |
| 1042 | |
| 1043 | XS(XS_re_regname) |
| 1044 | { |
| 1045 | dVAR; |
| 1046 | dXSARGS; |
| 1047 | REGEXP * rx; |
| 1048 | U32 flags; |
| 1049 | SV * ret; |
| 1050 | |
| 1051 | if (items < 1 || items > 2) |
| 1052 | croak_xs_usage(cv, "name[, all ]"); |
| 1053 | |
| 1054 | SP -= items; |
| 1055 | PUTBACK; |
| 1056 | |
| 1057 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1058 | |
| 1059 | if (!rx) |
| 1060 | XSRETURN_UNDEF; |
| 1061 | |
| 1062 | if (items == 2 && SvTRUE(ST(1))) { |
| 1063 | flags = RXapif_ALL; |
| 1064 | } else { |
| 1065 | flags = RXapif_ONE; |
| 1066 | } |
| 1067 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
| 1068 | |
| 1069 | SPAGAIN; |
| 1070 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); |
| 1071 | XSRETURN(1); |
| 1072 | } |
| 1073 | |
| 1074 | |
| 1075 | XS(XS_re_regnames) |
| 1076 | { |
| 1077 | dVAR; |
| 1078 | dXSARGS; |
| 1079 | REGEXP * rx; |
| 1080 | U32 flags; |
| 1081 | SV *ret; |
| 1082 | AV *av; |
| 1083 | I32 length; |
| 1084 | I32 i; |
| 1085 | SV **entry; |
| 1086 | |
| 1087 | if (items > 1) |
| 1088 | croak_xs_usage(cv, "[all]"); |
| 1089 | |
| 1090 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1091 | |
| 1092 | if (!rx) |
| 1093 | XSRETURN_UNDEF; |
| 1094 | |
| 1095 | if (items == 1 && SvTRUE(ST(0))) { |
| 1096 | flags = RXapif_ALL; |
| 1097 | } else { |
| 1098 | flags = RXapif_ONE; |
| 1099 | } |
| 1100 | |
| 1101 | SP -= items; |
| 1102 | PUTBACK; |
| 1103 | |
| 1104 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
| 1105 | |
| 1106 | SPAGAIN; |
| 1107 | |
| 1108 | if (!ret) |
| 1109 | XSRETURN_UNDEF; |
| 1110 | |
| 1111 | av = MUTABLE_AV(SvRV(ret)); |
| 1112 | length = av_len(av); |
| 1113 | |
| 1114 | for (i = 0; i <= length; i++) { |
| 1115 | entry = av_fetch(av, i, FALSE); |
| 1116 | |
| 1117 | if (!entry) |
| 1118 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); |
| 1119 | |
| 1120 | mXPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
| 1121 | } |
| 1122 | |
| 1123 | SvREFCNT_dec(ret); |
| 1124 | |
| 1125 | PUTBACK; |
| 1126 | return; |
| 1127 | } |
| 1128 | |
| 1129 | XS(XS_re_regexp_pattern) |
| 1130 | { |
| 1131 | dVAR; |
| 1132 | dXSARGS; |
| 1133 | REGEXP *re; |
| 1134 | |
| 1135 | if (items != 1) |
| 1136 | croak_xs_usage(cv, "sv"); |
| 1137 | |
| 1138 | SP -= items; |
| 1139 | |
| 1140 | /* |
| 1141 | Checks if a reference is a regex or not. If the parameter is |
| 1142 | not a ref, or is not the result of a qr// then returns false |
| 1143 | in scalar context and an empty list in list context. |
| 1144 | Otherwise in list context it returns the pattern and the |
| 1145 | modifiers, in scalar context it returns the pattern just as it |
| 1146 | would if the qr// was stringified normally, regardless as |
| 1147 | to the class of the variable and any strigification overloads |
| 1148 | on the object. |
| 1149 | */ |
| 1150 | |
| 1151 | if ((re = SvRX(ST(0)))) /* assign deliberate */ |
| 1152 | { |
| 1153 | /* Houston, we have a regex! */ |
| 1154 | SV *pattern; |
| 1155 | |
| 1156 | if ( GIMME_V == G_ARRAY ) { |
| 1157 | STRLEN left = 0; |
| 1158 | char reflags[sizeof(INT_PAT_MODS) + 1]; /* The +1 is for the charset |
| 1159 | modifier */ |
| 1160 | const char *fptr; |
| 1161 | char ch; |
| 1162 | U16 match_flags; |
| 1163 | |
| 1164 | /* |
| 1165 | we are in list context so stringify |
| 1166 | the modifiers that apply. We ignore "negative |
| 1167 | modifiers" in this scenario. |
| 1168 | */ |
| 1169 | |
| 1170 | if (RX_EXTFLAGS(re) & RXf_PMf_LOCALE) { |
| 1171 | reflags[left++] = LOCALE_PAT_MOD; |
| 1172 | } |
| 1173 | else if (RX_EXTFLAGS(re) & RXf_PMf_UNICODE) { |
| 1174 | reflags[left++] = UNICODE_PAT_MOD; |
| 1175 | } |
| 1176 | fptr = INT_PAT_MODS; |
| 1177 | match_flags = (U16)((RX_EXTFLAGS(re) & PMf_COMPILETIME) |
| 1178 | >> RXf_PMf_STD_PMMOD_SHIFT); |
| 1179 | |
| 1180 | while((ch = *fptr++)) { |
| 1181 | if(match_flags & 1) { |
| 1182 | reflags[left++] = ch; |
| 1183 | } |
| 1184 | match_flags >>= 1; |
| 1185 | } |
| 1186 | |
| 1187 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
| 1188 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); |
| 1189 | |
| 1190 | /* return the pattern and the modifiers */ |
| 1191 | XPUSHs(pattern); |
| 1192 | XPUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); |
| 1193 | XSRETURN(2); |
| 1194 | } else { |
| 1195 | /* Scalar, so use the string that Perl would return */ |
| 1196 | /* return the pattern in (?msix:..) format */ |
| 1197 | #if PERL_VERSION >= 11 |
| 1198 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
| 1199 | #else |
| 1200 | pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re), |
| 1201 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); |
| 1202 | #endif |
| 1203 | XPUSHs(pattern); |
| 1204 | XSRETURN(1); |
| 1205 | } |
| 1206 | } else { |
| 1207 | /* It ain't a regexp folks */ |
| 1208 | if ( GIMME_V == G_ARRAY ) { |
| 1209 | /* return the empty list */ |
| 1210 | XSRETURN_UNDEF; |
| 1211 | } else { |
| 1212 | /* Because of the (?:..) wrapping involved in a |
| 1213 | stringified pattern it is impossible to get a |
| 1214 | result for a real regexp that would evaluate to |
| 1215 | false. Therefore we can return PL_sv_no to signify |
| 1216 | that the object is not a regex, this means that one |
| 1217 | can say |
| 1218 | |
| 1219 | if (regex($might_be_a_regex) eq '(?:foo)') { } |
| 1220 | |
| 1221 | and not worry about undefined values. |
| 1222 | */ |
| 1223 | XSRETURN_NO; |
| 1224 | } |
| 1225 | } |
| 1226 | /* NOT-REACHED */ |
| 1227 | } |
| 1228 | |
| 1229 | struct xsub_details { |
| 1230 | const char *name; |
| 1231 | XSUBADDR_t xsub; |
| 1232 | const char *proto; |
| 1233 | }; |
| 1234 | |
| 1235 | struct xsub_details details[] = { |
| 1236 | {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL}, |
| 1237 | {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL}, |
| 1238 | {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL}, |
| 1239 | {"UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, NULL}, |
| 1240 | {"version::()", XS_version_noop, NULL}, |
| 1241 | {"version::new", XS_version_new, NULL}, |
| 1242 | {"version::parse", XS_version_new, NULL}, |
| 1243 | {"version::(\"\"", XS_version_stringify, NULL}, |
| 1244 | {"version::stringify", XS_version_stringify, NULL}, |
| 1245 | {"version::(0+", XS_version_numify, NULL}, |
| 1246 | {"version::numify", XS_version_numify, NULL}, |
| 1247 | {"version::normal", XS_version_normal, NULL}, |
| 1248 | {"version::(cmp", XS_version_vcmp, NULL}, |
| 1249 | {"version::(<=>", XS_version_vcmp, NULL}, |
| 1250 | {"version::vcmp", XS_version_vcmp, NULL}, |
| 1251 | {"version::(bool", XS_version_boolean, NULL}, |
| 1252 | {"version::boolean", XS_version_boolean, NULL}, |
| 1253 | {"version::(nomethod", XS_version_noop, NULL}, |
| 1254 | {"version::noop", XS_version_noop, NULL}, |
| 1255 | {"version::is_alpha", XS_version_is_alpha, NULL}, |
| 1256 | {"version::qv", XS_version_qv, NULL}, |
| 1257 | {"version::declare", XS_version_qv, NULL}, |
| 1258 | {"version::is_qv", XS_version_is_qv, NULL}, |
| 1259 | {"utf8::is_utf8", XS_utf8_is_utf8, NULL}, |
| 1260 | {"utf8::valid", XS_utf8_valid, NULL}, |
| 1261 | {"utf8::encode", XS_utf8_encode, NULL}, |
| 1262 | {"utf8::decode", XS_utf8_decode, NULL}, |
| 1263 | {"utf8::upgrade", XS_utf8_upgrade, NULL}, |
| 1264 | {"utf8::downgrade", XS_utf8_downgrade, NULL}, |
| 1265 | {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL}, |
| 1266 | {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL}, |
| 1267 | {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"}, |
| 1268 | {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"}, |
| 1269 | {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"}, |
| 1270 | {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"}, |
| 1271 | {"Internals::hash_seed", XS_Internals_hash_seed, ""}, |
| 1272 | {"Internals::rehash_seed", XS_Internals_rehash_seed, ""}, |
| 1273 | {"Internals::HvREHASH", XS_Internals_HvREHASH, "\\%"}, |
| 1274 | {"re::is_regexp", XS_re_is_regexp, "$"}, |
| 1275 | {"re::regname", XS_re_regname, ";$$"}, |
| 1276 | {"re::regnames", XS_re_regnames, ";$"}, |
| 1277 | {"re::regnames_count", XS_re_regnames_count, ""}, |
| 1278 | {"re::regexp_pattern", XS_re_regexp_pattern, "$"}, |
| 1279 | }; |
| 1280 | |
| 1281 | void |
| 1282 | Perl_boot_core_UNIVERSAL(pTHX) |
| 1283 | { |
| 1284 | dVAR; |
| 1285 | static const char file[] = __FILE__; |
| 1286 | struct xsub_details *xsub = details; |
| 1287 | const struct xsub_details *end |
| 1288 | = details + sizeof(details) / sizeof(details[0]); |
| 1289 | |
| 1290 | do { |
| 1291 | newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0); |
| 1292 | } while (++xsub < end); |
| 1293 | |
| 1294 | /* register the overloading (type 'A') magic */ |
| 1295 | PL_amagic_generation++; |
| 1296 | |
| 1297 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
| 1298 | CvFILE(newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL)) |
| 1299 | = (char *)file; |
| 1300 | } |
| 1301 | |
| 1302 | /* |
| 1303 | * Local variables: |
| 1304 | * c-indentation-style: bsd |
| 1305 | * c-basic-offset: 4 |
| 1306 | * indent-tabs-mode: t |
| 1307 | * End: |
| 1308 | * |
| 1309 | * ex: set ts=8 sts=4 sw=4 noet: |
| 1310 | */ |