| 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 | static HV * |
| 37 | S_get_isa_hash(pTHX_ HV *const stash) |
| 38 | { |
| 39 | dVAR; |
| 40 | struct mro_meta *const meta = HvMROMETA(stash); |
| 41 | |
| 42 | PERL_ARGS_ASSERT_GET_ISA_HASH; |
| 43 | |
| 44 | if (!meta->isa) { |
| 45 | AV *const isa = mro_get_linear_isa(stash); |
| 46 | if (!meta->isa) { |
| 47 | HV *const isa_hash = newHV(); |
| 48 | /* Linearisation didn't build it for us, so do it here. */ |
| 49 | SV *const *svp = AvARRAY(isa); |
| 50 | SV *const *const svp_end = svp + AvFILLp(isa) + 1; |
| 51 | const HEK *const canon_name = HvNAME_HEK(stash); |
| 52 | |
| 53 | while (svp < svp_end) { |
| 54 | (void) hv_store_ent(isa_hash, *svp++, &PL_sv_undef, 0); |
| 55 | } |
| 56 | |
| 57 | (void) hv_common(isa_hash, NULL, HEK_KEY(canon_name), |
| 58 | HEK_LEN(canon_name), HEK_FLAGS(canon_name), |
| 59 | HV_FETCH_ISSTORE, &PL_sv_undef, |
| 60 | HEK_HASH(canon_name)); |
| 61 | (void) hv_store(isa_hash, "UNIVERSAL", 9, &PL_sv_undef, 0); |
| 62 | |
| 63 | SvREADONLY_on(isa_hash); |
| 64 | |
| 65 | meta->isa = isa_hash; |
| 66 | } |
| 67 | } |
| 68 | return meta->isa; |
| 69 | } |
| 70 | |
| 71 | /* |
| 72 | * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com> |
| 73 | * The main guts of traverse_isa was actually copied from gv_fetchmeth |
| 74 | */ |
| 75 | |
| 76 | STATIC bool |
| 77 | S_isa_lookup(pTHX_ HV *stash, const char * const name) |
| 78 | { |
| 79 | dVAR; |
| 80 | const struct mro_meta *const meta = HvMROMETA(stash); |
| 81 | HV *const isa = meta->isa ? meta->isa : S_get_isa_hash(aTHX_ stash); |
| 82 | STRLEN len = strlen(name); |
| 83 | const HV *our_stash; |
| 84 | |
| 85 | PERL_ARGS_ASSERT_ISA_LOOKUP; |
| 86 | |
| 87 | if (hv_common(isa, NULL, name, len, 0 /* No "UTF-8" flag possible with only |
| 88 | a char * argument*/, |
| 89 | HV_FETCH_ISEXISTS, NULL, 0)) { |
| 90 | /* Direct name lookup worked. */ |
| 91 | return TRUE; |
| 92 | } |
| 93 | |
| 94 | /* A stash/class can go by many names (ie. User == main::User), so |
| 95 | we use the name in the stash itself, which is canonical. */ |
| 96 | our_stash = gv_stashpvn(name, len, 0); |
| 97 | |
| 98 | if (our_stash) { |
| 99 | HEK *const canon_name = HvNAME_HEK(our_stash); |
| 100 | |
| 101 | if (hv_common(isa, NULL, HEK_KEY(canon_name), HEK_LEN(canon_name), |
| 102 | HEK_FLAGS(canon_name), |
| 103 | HV_FETCH_ISEXISTS, NULL, HEK_HASH(canon_name))) { |
| 104 | return TRUE; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | return FALSE; |
| 109 | } |
| 110 | |
| 111 | /* |
| 112 | =head1 SV Manipulation Functions |
| 113 | |
| 114 | =for apidoc sv_derived_from |
| 115 | |
| 116 | Returns a boolean indicating whether the SV is derived from the specified class |
| 117 | I<at the C level>. To check derivation at the Perl level, call C<isa()> as a |
| 118 | normal Perl method. |
| 119 | |
| 120 | =cut |
| 121 | */ |
| 122 | |
| 123 | bool |
| 124 | Perl_sv_derived_from(pTHX_ SV *sv, const char *const name) |
| 125 | { |
| 126 | dVAR; |
| 127 | HV *stash; |
| 128 | |
| 129 | PERL_ARGS_ASSERT_SV_DERIVED_FROM; |
| 130 | |
| 131 | SvGETMAGIC(sv); |
| 132 | |
| 133 | if (SvROK(sv)) { |
| 134 | const char *type; |
| 135 | sv = SvRV(sv); |
| 136 | type = sv_reftype(sv,0); |
| 137 | if (type && strEQ(type,name)) |
| 138 | return TRUE; |
| 139 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; |
| 140 | } |
| 141 | else { |
| 142 | stash = gv_stashsv(sv, 0); |
| 143 | } |
| 144 | |
| 145 | return stash ? isa_lookup(stash, name) : FALSE; |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | =for apidoc sv_does |
| 150 | |
| 151 | Returns a boolean indicating whether the SV performs a specific, named role. |
| 152 | The SV can be a Perl object or the name of a Perl class. |
| 153 | |
| 154 | =cut |
| 155 | */ |
| 156 | |
| 157 | #include "XSUB.h" |
| 158 | |
| 159 | bool |
| 160 | Perl_sv_does(pTHX_ SV *sv, const char *const name) |
| 161 | { |
| 162 | const char *classname; |
| 163 | bool does_it; |
| 164 | SV *methodname; |
| 165 | dSP; |
| 166 | |
| 167 | PERL_ARGS_ASSERT_SV_DOES; |
| 168 | |
| 169 | ENTER; |
| 170 | SAVETMPS; |
| 171 | |
| 172 | SvGETMAGIC(sv); |
| 173 | |
| 174 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 175 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) { |
| 176 | LEAVE; |
| 177 | return FALSE; |
| 178 | } |
| 179 | |
| 180 | if (sv_isobject(sv)) { |
| 181 | classname = sv_reftype(SvRV(sv),TRUE); |
| 182 | } else { |
| 183 | classname = SvPV_nolen(sv); |
| 184 | } |
| 185 | |
| 186 | if (strEQ(name,classname)) { |
| 187 | LEAVE; |
| 188 | return TRUE; |
| 189 | } |
| 190 | |
| 191 | PUSHMARK(SP); |
| 192 | XPUSHs(sv); |
| 193 | mXPUSHs(newSVpv(name, 0)); |
| 194 | PUTBACK; |
| 195 | |
| 196 | methodname = newSVpvs_flags("isa", SVs_TEMP); |
| 197 | /* ugly hack: use the SvSCREAM flag so S_method_common |
| 198 | * can figure out we're calling DOES() and not isa(), |
| 199 | * and report eventual errors correctly. --rgs */ |
| 200 | SvSCREAM_on(methodname); |
| 201 | call_sv(methodname, G_SCALAR | G_METHOD); |
| 202 | SPAGAIN; |
| 203 | |
| 204 | does_it = SvTRUE( TOPs ); |
| 205 | FREETMPS; |
| 206 | LEAVE; |
| 207 | |
| 208 | return does_it; |
| 209 | } |
| 210 | |
| 211 | /* |
| 212 | =for apidoc croak_xs_usage |
| 213 | |
| 214 | A specialised variant of C<croak()> for emitting the usage message for xsubs |
| 215 | |
| 216 | croak_xs_usage(cv, "eee_yow"); |
| 217 | |
| 218 | works out the package name and subroutine name from C<cv>, and then calls |
| 219 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: |
| 220 | |
| 221 | Perl_croak(aTHX_ "Usage: %s::%s(%s)", "ouch" "awk", "eee_yow"); |
| 222 | |
| 223 | =cut |
| 224 | */ |
| 225 | |
| 226 | void |
| 227 | Perl_croak_xs_usage(pTHX_ const CV *const cv, const char *const params) |
| 228 | { |
| 229 | const GV *const gv = CvGV(cv); |
| 230 | |
| 231 | PERL_ARGS_ASSERT_CROAK_XS_USAGE; |
| 232 | |
| 233 | if (gv) { |
| 234 | const char *const gvname = GvNAME(gv); |
| 235 | const HV *const stash = GvSTASH(gv); |
| 236 | const char *const hvname = stash ? HvNAME_get(stash) : NULL; |
| 237 | |
| 238 | if (hvname) |
| 239 | Perl_croak(aTHX_ "Usage: %s::%s(%s)", hvname, gvname, params); |
| 240 | else |
| 241 | Perl_croak(aTHX_ "Usage: %s(%s)", gvname, params); |
| 242 | } else { |
| 243 | /* Pants. I don't think that it should be possible to get here. */ |
| 244 | Perl_croak(aTHX_ "Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | XS(XS_UNIVERSAL_isa) |
| 249 | { |
| 250 | dVAR; |
| 251 | dXSARGS; |
| 252 | |
| 253 | if (items != 2) |
| 254 | croak_xs_usage(cv, "reference, kind"); |
| 255 | else { |
| 256 | SV * const sv = ST(0); |
| 257 | const char *name; |
| 258 | |
| 259 | SvGETMAGIC(sv); |
| 260 | |
| 261 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 262 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
| 263 | XSRETURN_UNDEF; |
| 264 | |
| 265 | name = SvPV_nolen_const(ST(1)); |
| 266 | |
| 267 | ST(0) = boolSV(sv_derived_from(sv, name)); |
| 268 | XSRETURN(1); |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | XS(XS_UNIVERSAL_can) |
| 273 | { |
| 274 | dVAR; |
| 275 | dXSARGS; |
| 276 | SV *sv; |
| 277 | const char *name; |
| 278 | SV *rv; |
| 279 | HV *pkg = NULL; |
| 280 | |
| 281 | if (items != 2) |
| 282 | croak_xs_usage(cv, "object-ref, method"); |
| 283 | |
| 284 | sv = ST(0); |
| 285 | |
| 286 | SvGETMAGIC(sv); |
| 287 | |
| 288 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 289 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
| 290 | XSRETURN_UNDEF; |
| 291 | |
| 292 | name = SvPV_nolen_const(ST(1)); |
| 293 | rv = &PL_sv_undef; |
| 294 | |
| 295 | if (SvROK(sv)) { |
| 296 | sv = MUTABLE_SV(SvRV(sv)); |
| 297 | if (SvOBJECT(sv)) |
| 298 | pkg = SvSTASH(sv); |
| 299 | } |
| 300 | else { |
| 301 | pkg = gv_stashsv(sv, 0); |
| 302 | } |
| 303 | |
| 304 | if (pkg) { |
| 305 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
| 306 | if (gv && isGV(gv)) |
| 307 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
| 308 | } |
| 309 | |
| 310 | ST(0) = rv; |
| 311 | XSRETURN(1); |
| 312 | } |
| 313 | |
| 314 | XS(XS_UNIVERSAL_DOES) |
| 315 | { |
| 316 | dVAR; |
| 317 | dXSARGS; |
| 318 | PERL_UNUSED_ARG(cv); |
| 319 | |
| 320 | if (items != 2) |
| 321 | Perl_croak(aTHX_ "Usage: invocant->DOES(kind)"); |
| 322 | else { |
| 323 | SV * const sv = ST(0); |
| 324 | const char *name; |
| 325 | |
| 326 | name = SvPV_nolen_const(ST(1)); |
| 327 | if (sv_does( sv, name )) |
| 328 | XSRETURN_YES; |
| 329 | |
| 330 | XSRETURN_NO; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | XS(XS_UNIVERSAL_VERSION) |
| 335 | { |
| 336 | dVAR; |
| 337 | dXSARGS; |
| 338 | HV *pkg; |
| 339 | GV **gvp; |
| 340 | GV *gv; |
| 341 | SV *sv; |
| 342 | const char *undef; |
| 343 | PERL_UNUSED_ARG(cv); |
| 344 | |
| 345 | if (SvROK(ST(0))) { |
| 346 | sv = MUTABLE_SV(SvRV(ST(0))); |
| 347 | if (!SvOBJECT(sv)) |
| 348 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
| 349 | pkg = SvSTASH(sv); |
| 350 | } |
| 351 | else { |
| 352 | pkg = gv_stashsv(ST(0), 0); |
| 353 | } |
| 354 | |
| 355 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
| 356 | |
| 357 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
| 358 | SV * const nsv = sv_newmortal(); |
| 359 | sv_setsv(nsv, sv); |
| 360 | sv = nsv; |
| 361 | if ( !sv_derived_from(sv, "version")) |
| 362 | upg_version(sv, FALSE); |
| 363 | undef = NULL; |
| 364 | } |
| 365 | else { |
| 366 | sv = &PL_sv_undef; |
| 367 | undef = "(undef)"; |
| 368 | } |
| 369 | |
| 370 | if (items > 1) { |
| 371 | SV *req = ST(1); |
| 372 | |
| 373 | if (undef) { |
| 374 | if (pkg) { |
| 375 | const char * const name = HvNAME_get(pkg); |
| 376 | Perl_croak(aTHX_ |
| 377 | "%s does not define $%s::VERSION--version check failed", |
| 378 | name, name); |
| 379 | } else { |
| 380 | Perl_croak(aTHX_ |
| 381 | "%s defines neither package nor VERSION--version check failed", |
| 382 | SvPVx_nolen_const(ST(0)) ); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | if ( !sv_derived_from(req, "version")) { |
| 387 | /* req may very well be R/O, so create a new object */ |
| 388 | req = sv_2mortal( new_version(req) ); |
| 389 | } |
| 390 | |
| 391 | if ( vcmp( req, sv ) > 0 ) { |
| 392 | if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) { |
| 393 | Perl_croak(aTHX_ "%s version %"SVf" required--" |
| 394 | "this is only version %"SVf"", HvNAME_get(pkg), |
| 395 | SVfARG(sv_2mortal(vnormal(req))), |
| 396 | SVfARG(sv_2mortal(vnormal(sv)))); |
| 397 | } else { |
| 398 | Perl_croak(aTHX_ "%s version %"SVf" required--" |
| 399 | "this is only version %"SVf"", HvNAME_get(pkg), |
| 400 | SVfARG(sv_2mortal(vstringify(req))), |
| 401 | SVfARG(sv_2mortal(vstringify(sv)))); |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | } |
| 406 | |
| 407 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
| 408 | ST(0) = sv_2mortal(vstringify(sv)); |
| 409 | } else { |
| 410 | ST(0) = sv; |
| 411 | } |
| 412 | |
| 413 | XSRETURN(1); |
| 414 | } |
| 415 | |
| 416 | XS(XS_version_new) |
| 417 | { |
| 418 | dVAR; |
| 419 | dXSARGS; |
| 420 | if (items > 3) |
| 421 | croak_xs_usage(cv, "class, version"); |
| 422 | SP -= items; |
| 423 | { |
| 424 | SV *vs = ST(1); |
| 425 | SV *rv; |
| 426 | const char * const classname = |
| 427 | sv_isobject(ST(0)) /* get the class if called as an object method */ |
| 428 | ? HvNAME(SvSTASH(SvRV(ST(0)))) |
| 429 | : (char *)SvPV_nolen(ST(0)); |
| 430 | |
| 431 | if ( items == 1 || ! SvOK(vs) ) { /* no param or explicit undef */ |
| 432 | /* create empty object */ |
| 433 | vs = sv_newmortal(); |
| 434 | sv_setpvs(vs, "0"); |
| 435 | } |
| 436 | else if ( items == 3 ) { |
| 437 | vs = sv_newmortal(); |
| 438 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
| 439 | } |
| 440 | |
| 441 | rv = new_version(vs); |
| 442 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
| 443 | sv_bless(rv, gv_stashpv(classname, GV_ADD)); |
| 444 | |
| 445 | mPUSHs(rv); |
| 446 | PUTBACK; |
| 447 | return; |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | XS(XS_version_stringify) |
| 452 | { |
| 453 | dVAR; |
| 454 | dXSARGS; |
| 455 | if (items < 1) |
| 456 | croak_xs_usage(cv, "lobj, ..."); |
| 457 | SP -= items; |
| 458 | { |
| 459 | SV * lobj = ST(0); |
| 460 | |
| 461 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 462 | lobj = SvRV(lobj); |
| 463 | } |
| 464 | else |
| 465 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 466 | |
| 467 | mPUSHs(vstringify(lobj)); |
| 468 | |
| 469 | PUTBACK; |
| 470 | return; |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | XS(XS_version_numify) |
| 475 | { |
| 476 | dVAR; |
| 477 | dXSARGS; |
| 478 | if (items < 1) |
| 479 | croak_xs_usage(cv, "lobj, ..."); |
| 480 | SP -= items; |
| 481 | { |
| 482 | SV * lobj = ST(0); |
| 483 | |
| 484 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 485 | lobj = SvRV(lobj); |
| 486 | } |
| 487 | else |
| 488 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 489 | |
| 490 | mPUSHs(vnumify(lobj)); |
| 491 | |
| 492 | PUTBACK; |
| 493 | return; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | XS(XS_version_normal) |
| 498 | { |
| 499 | dVAR; |
| 500 | dXSARGS; |
| 501 | if (items < 1) |
| 502 | croak_xs_usage(cv, "lobj, ..."); |
| 503 | SP -= items; |
| 504 | { |
| 505 | SV * lobj = ST(0); |
| 506 | |
| 507 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 508 | lobj = SvRV(lobj); |
| 509 | } |
| 510 | else |
| 511 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 512 | |
| 513 | mPUSHs(vnormal(lobj)); |
| 514 | |
| 515 | PUTBACK; |
| 516 | return; |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | XS(XS_version_vcmp) |
| 521 | { |
| 522 | dVAR; |
| 523 | dXSARGS; |
| 524 | if (items < 1) |
| 525 | croak_xs_usage(cv, "lobj, ..."); |
| 526 | SP -= items; |
| 527 | { |
| 528 | SV * lobj = ST(0); |
| 529 | |
| 530 | if (sv_derived_from(lobj, "version") && SvROK(lobj)) { |
| 531 | lobj = SvRV(lobj); |
| 532 | } |
| 533 | else |
| 534 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 535 | |
| 536 | { |
| 537 | SV *rs; |
| 538 | SV *rvs; |
| 539 | SV * robj = ST(1); |
| 540 | const IV swap = (IV)SvIV(ST(2)); |
| 541 | |
| 542 | if ( ! sv_derived_from(robj, "version") ) |
| 543 | { |
| 544 | robj = new_version(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP)); |
| 545 | sv_2mortal(robj); |
| 546 | } |
| 547 | rvs = SvRV(robj); |
| 548 | |
| 549 | if ( swap ) |
| 550 | { |
| 551 | rs = newSViv(vcmp(rvs,lobj)); |
| 552 | } |
| 553 | else |
| 554 | { |
| 555 | rs = newSViv(vcmp(lobj,rvs)); |
| 556 | } |
| 557 | |
| 558 | mPUSHs(rs); |
| 559 | } |
| 560 | |
| 561 | PUTBACK; |
| 562 | return; |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | XS(XS_version_boolean) |
| 567 | { |
| 568 | dVAR; |
| 569 | dXSARGS; |
| 570 | if (items < 1) |
| 571 | croak_xs_usage(cv, "lobj, ..."); |
| 572 | SP -= items; |
| 573 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) { |
| 574 | SV * const lobj = SvRV(ST(0)); |
| 575 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
| 576 | mPUSHs(rs); |
| 577 | PUTBACK; |
| 578 | return; |
| 579 | } |
| 580 | else |
| 581 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 582 | } |
| 583 | |
| 584 | XS(XS_version_noop) |
| 585 | { |
| 586 | dVAR; |
| 587 | dXSARGS; |
| 588 | if (items < 1) |
| 589 | croak_xs_usage(cv, "lobj, ..."); |
| 590 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) |
| 591 | Perl_croak(aTHX_ "operation not supported with version object"); |
| 592 | else |
| 593 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 594 | #ifndef HASATTRIBUTE_NORETURN |
| 595 | XSRETURN_EMPTY; |
| 596 | #endif |
| 597 | } |
| 598 | |
| 599 | XS(XS_version_is_alpha) |
| 600 | { |
| 601 | dVAR; |
| 602 | dXSARGS; |
| 603 | if (items != 1) |
| 604 | croak_xs_usage(cv, "lobj"); |
| 605 | SP -= items; |
| 606 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) { |
| 607 | SV * const lobj = ST(0); |
| 608 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) ) |
| 609 | XSRETURN_YES; |
| 610 | else |
| 611 | XSRETURN_NO; |
| 612 | PUTBACK; |
| 613 | return; |
| 614 | } |
| 615 | else |
| 616 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 617 | } |
| 618 | |
| 619 | XS(XS_version_qv) |
| 620 | { |
| 621 | dVAR; |
| 622 | dXSARGS; |
| 623 | PERL_UNUSED_ARG(cv); |
| 624 | SP -= items; |
| 625 | { |
| 626 | SV * ver = ST(0); |
| 627 | SV * rv; |
| 628 | const char * classname = ""; |
| 629 | if ( items == 2 && SvOK(ST(1)) ) { |
| 630 | /* getting called as object or class method */ |
| 631 | ver = ST(1); |
| 632 | classname = |
| 633 | sv_isobject(ST(0)) /* class called as an object method */ |
| 634 | ? HvNAME_get(SvSTASH(SvRV(ST(0)))) |
| 635 | : (char *)SvPV_nolen(ST(0)); |
| 636 | } |
| 637 | if ( !SvVOK(ver) ) { /* not already a v-string */ |
| 638 | rv = sv_newmortal(); |
| 639 | sv_setsv(rv,ver); /* make a duplicate */ |
| 640 | upg_version(rv, TRUE); |
| 641 | } else { |
| 642 | rv = sv_2mortal(new_version(ver)); |
| 643 | } |
| 644 | if ( items == 2 && strcmp(classname,"version") ) { /* inherited new() */ |
| 645 | sv_bless(rv, gv_stashpv(classname, GV_ADD)); |
| 646 | } |
| 647 | PUSHs(rv); |
| 648 | } |
| 649 | PUTBACK; |
| 650 | return; |
| 651 | } |
| 652 | |
| 653 | XS(XS_version_is_qv) |
| 654 | { |
| 655 | dVAR; |
| 656 | dXSARGS; |
| 657 | if (items != 1) |
| 658 | croak_xs_usage(cv, "lobj"); |
| 659 | SP -= items; |
| 660 | if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) { |
| 661 | SV * const lobj = ST(0); |
| 662 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) ) |
| 663 | XSRETURN_YES; |
| 664 | else |
| 665 | XSRETURN_NO; |
| 666 | PUTBACK; |
| 667 | return; |
| 668 | } |
| 669 | else |
| 670 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 671 | } |
| 672 | |
| 673 | XS(XS_utf8_is_utf8) |
| 674 | { |
| 675 | dVAR; |
| 676 | dXSARGS; |
| 677 | if (items != 1) |
| 678 | croak_xs_usage(cv, "sv"); |
| 679 | else { |
| 680 | SV * const sv = ST(0); |
| 681 | SvGETMAGIC(sv); |
| 682 | if (SvUTF8(sv)) |
| 683 | XSRETURN_YES; |
| 684 | else |
| 685 | XSRETURN_NO; |
| 686 | } |
| 687 | XSRETURN_EMPTY; |
| 688 | } |
| 689 | |
| 690 | XS(XS_utf8_valid) |
| 691 | { |
| 692 | dVAR; |
| 693 | dXSARGS; |
| 694 | if (items != 1) |
| 695 | croak_xs_usage(cv, "sv"); |
| 696 | else { |
| 697 | SV * const sv = ST(0); |
| 698 | STRLEN len; |
| 699 | const char * const s = SvPV_const(sv,len); |
| 700 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
| 701 | XSRETURN_YES; |
| 702 | else |
| 703 | XSRETURN_NO; |
| 704 | } |
| 705 | XSRETURN_EMPTY; |
| 706 | } |
| 707 | |
| 708 | XS(XS_utf8_encode) |
| 709 | { |
| 710 | dVAR; |
| 711 | dXSARGS; |
| 712 | if (items != 1) |
| 713 | croak_xs_usage(cv, "sv"); |
| 714 | sv_utf8_encode(ST(0)); |
| 715 | XSRETURN_EMPTY; |
| 716 | } |
| 717 | |
| 718 | XS(XS_utf8_decode) |
| 719 | { |
| 720 | dVAR; |
| 721 | dXSARGS; |
| 722 | if (items != 1) |
| 723 | croak_xs_usage(cv, "sv"); |
| 724 | else { |
| 725 | SV * const sv = ST(0); |
| 726 | const bool RETVAL = sv_utf8_decode(sv); |
| 727 | ST(0) = boolSV(RETVAL); |
| 728 | sv_2mortal(ST(0)); |
| 729 | } |
| 730 | XSRETURN(1); |
| 731 | } |
| 732 | |
| 733 | XS(XS_utf8_upgrade) |
| 734 | { |
| 735 | dVAR; |
| 736 | dXSARGS; |
| 737 | if (items != 1) |
| 738 | croak_xs_usage(cv, "sv"); |
| 739 | else { |
| 740 | SV * const sv = ST(0); |
| 741 | STRLEN RETVAL; |
| 742 | dXSTARG; |
| 743 | |
| 744 | RETVAL = sv_utf8_upgrade(sv); |
| 745 | XSprePUSH; PUSHi((IV)RETVAL); |
| 746 | } |
| 747 | XSRETURN(1); |
| 748 | } |
| 749 | |
| 750 | XS(XS_utf8_downgrade) |
| 751 | { |
| 752 | dVAR; |
| 753 | dXSARGS; |
| 754 | if (items < 1 || items > 2) |
| 755 | croak_xs_usage(cv, "sv, failok=0"); |
| 756 | else { |
| 757 | SV * const sv = ST(0); |
| 758 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
| 759 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
| 760 | |
| 761 | ST(0) = boolSV(RETVAL); |
| 762 | sv_2mortal(ST(0)); |
| 763 | } |
| 764 | XSRETURN(1); |
| 765 | } |
| 766 | |
| 767 | XS(XS_utf8_native_to_unicode) |
| 768 | { |
| 769 | dVAR; |
| 770 | dXSARGS; |
| 771 | const UV uv = SvUV(ST(0)); |
| 772 | |
| 773 | if (items > 1) |
| 774 | croak_xs_usage(cv, "sv"); |
| 775 | |
| 776 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
| 777 | XSRETURN(1); |
| 778 | } |
| 779 | |
| 780 | XS(XS_utf8_unicode_to_native) |
| 781 | { |
| 782 | dVAR; |
| 783 | dXSARGS; |
| 784 | const UV uv = SvUV(ST(0)); |
| 785 | |
| 786 | if (items > 1) |
| 787 | croak_xs_usage(cv, "sv"); |
| 788 | |
| 789 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
| 790 | XSRETURN(1); |
| 791 | } |
| 792 | |
| 793 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
| 794 | { |
| 795 | dVAR; |
| 796 | dXSARGS; |
| 797 | SV * const sv = SvRV(ST(0)); |
| 798 | PERL_UNUSED_ARG(cv); |
| 799 | |
| 800 | if (items == 1) { |
| 801 | if (SvREADONLY(sv)) |
| 802 | XSRETURN_YES; |
| 803 | else |
| 804 | XSRETURN_NO; |
| 805 | } |
| 806 | else if (items == 2) { |
| 807 | if (SvTRUE(ST(1))) { |
| 808 | SvREADONLY_on(sv); |
| 809 | XSRETURN_YES; |
| 810 | } |
| 811 | else { |
| 812 | /* I hope you really know what you are doing. */ |
| 813 | SvREADONLY_off(sv); |
| 814 | XSRETURN_NO; |
| 815 | } |
| 816 | } |
| 817 | XSRETURN_UNDEF; /* Can't happen. */ |
| 818 | } |
| 819 | |
| 820 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
| 821 | { |
| 822 | dVAR; |
| 823 | dXSARGS; |
| 824 | SV * const sv = SvRV(ST(0)); |
| 825 | PERL_UNUSED_ARG(cv); |
| 826 | |
| 827 | if (items == 1) |
| 828 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
| 829 | else if (items == 2) { |
| 830 | /* I hope you really know what you are doing. */ |
| 831 | SvREFCNT(sv) = SvIV(ST(1)); |
| 832 | XSRETURN_IV(SvREFCNT(sv)); |
| 833 | } |
| 834 | XSRETURN_UNDEF; /* Can't happen. */ |
| 835 | } |
| 836 | |
| 837 | XS(XS_Internals_hv_clear_placehold) |
| 838 | { |
| 839 | dVAR; |
| 840 | dXSARGS; |
| 841 | |
| 842 | if (items != 1) |
| 843 | croak_xs_usage(cv, "hv"); |
| 844 | else { |
| 845 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); |
| 846 | hv_clear_placeholders(hv); |
| 847 | XSRETURN(0); |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | XS(XS_PerlIO_get_layers) |
| 852 | { |
| 853 | dVAR; |
| 854 | dXSARGS; |
| 855 | if (items < 1 || items % 2 == 0) |
| 856 | croak_xs_usage(cv, "filehandle[,args]"); |
| 857 | #ifdef USE_PERLIO |
| 858 | { |
| 859 | SV * sv; |
| 860 | GV * gv; |
| 861 | IO * io; |
| 862 | bool input = TRUE; |
| 863 | bool details = FALSE; |
| 864 | |
| 865 | if (items > 1) { |
| 866 | SV * const *svp; |
| 867 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
| 868 | SV * const * const varp = svp; |
| 869 | SV * const * const valp = svp + 1; |
| 870 | STRLEN klen; |
| 871 | const char * const key = SvPV_const(*varp, klen); |
| 872 | |
| 873 | switch (*key) { |
| 874 | case 'i': |
| 875 | if (klen == 5 && memEQ(key, "input", 5)) { |
| 876 | input = SvTRUE(*valp); |
| 877 | break; |
| 878 | } |
| 879 | goto fail; |
| 880 | case 'o': |
| 881 | if (klen == 6 && memEQ(key, "output", 6)) { |
| 882 | input = !SvTRUE(*valp); |
| 883 | break; |
| 884 | } |
| 885 | goto fail; |
| 886 | case 'd': |
| 887 | if (klen == 7 && memEQ(key, "details", 7)) { |
| 888 | details = SvTRUE(*valp); |
| 889 | break; |
| 890 | } |
| 891 | goto fail; |
| 892 | default: |
| 893 | fail: |
| 894 | Perl_croak(aTHX_ |
| 895 | "get_layers: unknown argument '%s'", |
| 896 | key); |
| 897 | } |
| 898 | } |
| 899 | |
| 900 | SP -= (items - 1); |
| 901 | } |
| 902 | |
| 903 | sv = POPs; |
| 904 | gv = MUTABLE_GV(sv); |
| 905 | |
| 906 | if (!isGV(sv)) { |
| 907 | if (SvROK(sv) && isGV(SvRV(sv))) |
| 908 | gv = MUTABLE_GV(SvRV(sv)); |
| 909 | else if (SvPOKp(sv)) |
| 910 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
| 911 | } |
| 912 | |
| 913 | if (gv && (io = GvIO(gv))) { |
| 914 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
| 915 | IoIFP(io) : IoOFP(io)); |
| 916 | I32 i; |
| 917 | const I32 last = av_len(av); |
| 918 | I32 nitem = 0; |
| 919 | |
| 920 | for (i = last; i >= 0; i -= 3) { |
| 921 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
| 922 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); |
| 923 | SV * const * const flgsvp = av_fetch(av, i, FALSE); |
| 924 | |
| 925 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
| 926 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); |
| 927 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
| 928 | |
| 929 | if (details) { |
| 930 | /* Indents of 5? Yuck. */ |
| 931 | /* We know that PerlIO_get_layers creates a new SV for |
| 932 | the name and flags, so we can just take a reference |
| 933 | and "steal" it when we free the AV below. */ |
| 934 | XPUSHs(namok |
| 935 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
| 936 | : &PL_sv_undef); |
| 937 | XPUSHs(argok |
| 938 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
| 939 | SvCUR(*argsvp), |
| 940 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) |
| 941 | | SVs_TEMP) |
| 942 | : &PL_sv_undef); |
| 943 | XPUSHs(flgok |
| 944 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
| 945 | : &PL_sv_undef); |
| 946 | nitem += 3; |
| 947 | } |
| 948 | else { |
| 949 | if (namok && argok) |
| 950 | XPUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
| 951 | SVfARG(*namsvp), |
| 952 | SVfARG(*argsvp)))); |
| 953 | else if (namok) |
| 954 | XPUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
| 955 | else |
| 956 | XPUSHs(&PL_sv_undef); |
| 957 | nitem++; |
| 958 | if (flgok) { |
| 959 | const IV flags = SvIVX(*flgsvp); |
| 960 | |
| 961 | if (flags & PERLIO_F_UTF8) { |
| 962 | XPUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
| 963 | nitem++; |
| 964 | } |
| 965 | } |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | SvREFCNT_dec(av); |
| 970 | |
| 971 | XSRETURN(nitem); |
| 972 | } |
| 973 | } |
| 974 | #endif |
| 975 | |
| 976 | XSRETURN(0); |
| 977 | } |
| 978 | |
| 979 | XS(XS_Internals_hash_seed) |
| 980 | { |
| 981 | dVAR; |
| 982 | /* Using dXSARGS would also have dITEM and dSP, |
| 983 | * which define 2 unused local variables. */ |
| 984 | dAXMARK; |
| 985 | PERL_UNUSED_ARG(cv); |
| 986 | PERL_UNUSED_VAR(mark); |
| 987 | XSRETURN_UV(PERL_HASH_SEED); |
| 988 | } |
| 989 | |
| 990 | XS(XS_Internals_rehash_seed) |
| 991 | { |
| 992 | dVAR; |
| 993 | /* Using dXSARGS would also have dITEM and dSP, |
| 994 | * which define 2 unused local variables. */ |
| 995 | dAXMARK; |
| 996 | PERL_UNUSED_ARG(cv); |
| 997 | PERL_UNUSED_VAR(mark); |
| 998 | XSRETURN_UV(PL_rehash_seed); |
| 999 | } |
| 1000 | |
| 1001 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
| 1002 | { |
| 1003 | dVAR; |
| 1004 | dXSARGS; |
| 1005 | PERL_UNUSED_ARG(cv); |
| 1006 | if (SvROK(ST(0))) { |
| 1007 | const HV * const hv = (const HV *) SvRV(ST(0)); |
| 1008 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
| 1009 | if (HvREHASH(hv)) |
| 1010 | XSRETURN_YES; |
| 1011 | else |
| 1012 | XSRETURN_NO; |
| 1013 | } |
| 1014 | } |
| 1015 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
| 1016 | } |
| 1017 | |
| 1018 | XS(XS_re_is_regexp) |
| 1019 | { |
| 1020 | dVAR; |
| 1021 | dXSARGS; |
| 1022 | PERL_UNUSED_VAR(cv); |
| 1023 | |
| 1024 | if (items != 1) |
| 1025 | croak_xs_usage(cv, "sv"); |
| 1026 | |
| 1027 | SP -= items; |
| 1028 | |
| 1029 | if (SvRXOK(ST(0))) { |
| 1030 | XSRETURN_YES; |
| 1031 | } else { |
| 1032 | XSRETURN_NO; |
| 1033 | } |
| 1034 | } |
| 1035 | |
| 1036 | XS(XS_re_regnames_count) |
| 1037 | { |
| 1038 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1039 | SV * ret; |
| 1040 | dVAR; |
| 1041 | dXSARGS; |
| 1042 | |
| 1043 | if (items != 0) |
| 1044 | croak_xs_usage(cv, ""); |
| 1045 | |
| 1046 | SP -= items; |
| 1047 | |
| 1048 | if (!rx) |
| 1049 | XSRETURN_UNDEF; |
| 1050 | |
| 1051 | ret = CALLREG_NAMED_BUFF_COUNT(rx); |
| 1052 | |
| 1053 | SPAGAIN; |
| 1054 | |
| 1055 | if (ret) { |
| 1056 | mXPUSHs(ret); |
| 1057 | PUTBACK; |
| 1058 | return; |
| 1059 | } else { |
| 1060 | XSRETURN_UNDEF; |
| 1061 | } |
| 1062 | } |
| 1063 | |
| 1064 | XS(XS_re_regname) |
| 1065 | { |
| 1066 | dVAR; |
| 1067 | dXSARGS; |
| 1068 | REGEXP * rx; |
| 1069 | U32 flags; |
| 1070 | SV * ret; |
| 1071 | |
| 1072 | if (items < 1 || items > 2) |
| 1073 | croak_xs_usage(cv, "name[, all ]"); |
| 1074 | |
| 1075 | SP -= items; |
| 1076 | |
| 1077 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1078 | |
| 1079 | if (!rx) |
| 1080 | XSRETURN_UNDEF; |
| 1081 | |
| 1082 | if (items == 2 && SvTRUE(ST(1))) { |
| 1083 | flags = RXapif_ALL; |
| 1084 | } else { |
| 1085 | flags = RXapif_ONE; |
| 1086 | } |
| 1087 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
| 1088 | |
| 1089 | if (ret) { |
| 1090 | mXPUSHs(ret); |
| 1091 | XSRETURN(1); |
| 1092 | } |
| 1093 | XSRETURN_UNDEF; |
| 1094 | } |
| 1095 | |
| 1096 | |
| 1097 | XS(XS_re_regnames) |
| 1098 | { |
| 1099 | dVAR; |
| 1100 | dXSARGS; |
| 1101 | REGEXP * rx; |
| 1102 | U32 flags; |
| 1103 | SV *ret; |
| 1104 | AV *av; |
| 1105 | I32 length; |
| 1106 | I32 i; |
| 1107 | SV **entry; |
| 1108 | |
| 1109 | if (items > 1) |
| 1110 | croak_xs_usage(cv, "[all]"); |
| 1111 | |
| 1112 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1113 | |
| 1114 | if (!rx) |
| 1115 | XSRETURN_UNDEF; |
| 1116 | |
| 1117 | if (items == 1 && SvTRUE(ST(0))) { |
| 1118 | flags = RXapif_ALL; |
| 1119 | } else { |
| 1120 | flags = RXapif_ONE; |
| 1121 | } |
| 1122 | |
| 1123 | SP -= items; |
| 1124 | |
| 1125 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
| 1126 | |
| 1127 | SPAGAIN; |
| 1128 | |
| 1129 | SP -= items; |
| 1130 | |
| 1131 | if (!ret) |
| 1132 | XSRETURN_UNDEF; |
| 1133 | |
| 1134 | av = MUTABLE_AV(SvRV(ret)); |
| 1135 | length = av_len(av); |
| 1136 | |
| 1137 | for (i = 0; i <= length; i++) { |
| 1138 | entry = av_fetch(av, i, FALSE); |
| 1139 | |
| 1140 | if (!entry) |
| 1141 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); |
| 1142 | |
| 1143 | mXPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
| 1144 | } |
| 1145 | |
| 1146 | SvREFCNT_dec(ret); |
| 1147 | |
| 1148 | PUTBACK; |
| 1149 | return; |
| 1150 | } |
| 1151 | |
| 1152 | XS(XS_re_regexp_pattern) |
| 1153 | { |
| 1154 | dVAR; |
| 1155 | dXSARGS; |
| 1156 | REGEXP *re; |
| 1157 | |
| 1158 | if (items != 1) |
| 1159 | croak_xs_usage(cv, "sv"); |
| 1160 | |
| 1161 | SP -= items; |
| 1162 | |
| 1163 | /* |
| 1164 | Checks if a reference is a regex or not. If the parameter is |
| 1165 | not a ref, or is not the result of a qr// then returns false |
| 1166 | in scalar context and an empty list in list context. |
| 1167 | Otherwise in list context it returns the pattern and the |
| 1168 | modifiers, in scalar context it returns the pattern just as it |
| 1169 | would if the qr// was stringified normally, regardless as |
| 1170 | to the class of the variable and any strigification overloads |
| 1171 | on the object. |
| 1172 | */ |
| 1173 | |
| 1174 | if ((re = SvRX(ST(0)))) /* assign deliberate */ |
| 1175 | { |
| 1176 | /* Houston, we have a regex! */ |
| 1177 | SV *pattern; |
| 1178 | STRLEN left = 0; |
| 1179 | char reflags[sizeof(INT_PAT_MODS)]; |
| 1180 | |
| 1181 | if ( GIMME_V == G_ARRAY ) { |
| 1182 | /* |
| 1183 | we are in list context so stringify |
| 1184 | the modifiers that apply. We ignore "negative |
| 1185 | modifiers" in this scenario. |
| 1186 | */ |
| 1187 | |
| 1188 | const char *fptr = INT_PAT_MODS; |
| 1189 | char ch; |
| 1190 | U16 match_flags = (U16)((RX_EXTFLAGS(re) & PMf_COMPILETIME) |
| 1191 | >> RXf_PMf_STD_PMMOD_SHIFT); |
| 1192 | |
| 1193 | while((ch = *fptr++)) { |
| 1194 | if(match_flags & 1) { |
| 1195 | reflags[left++] = ch; |
| 1196 | } |
| 1197 | match_flags >>= 1; |
| 1198 | } |
| 1199 | |
| 1200 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
| 1201 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); |
| 1202 | |
| 1203 | /* return the pattern and the modifiers */ |
| 1204 | XPUSHs(pattern); |
| 1205 | XPUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); |
| 1206 | XSRETURN(2); |
| 1207 | } else { |
| 1208 | /* Scalar, so use the string that Perl would return */ |
| 1209 | /* return the pattern in (?msix:..) format */ |
| 1210 | #if PERL_VERSION >= 11 |
| 1211 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
| 1212 | #else |
| 1213 | pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re), |
| 1214 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); |
| 1215 | #endif |
| 1216 | XPUSHs(pattern); |
| 1217 | XSRETURN(1); |
| 1218 | } |
| 1219 | } else { |
| 1220 | /* It ain't a regexp folks */ |
| 1221 | if ( GIMME_V == G_ARRAY ) { |
| 1222 | /* return the empty list */ |
| 1223 | XSRETURN_UNDEF; |
| 1224 | } else { |
| 1225 | /* Because of the (?:..) wrapping involved in a |
| 1226 | stringified pattern it is impossible to get a |
| 1227 | result for a real regexp that would evaluate to |
| 1228 | false. Therefore we can return PL_sv_no to signify |
| 1229 | that the object is not a regex, this means that one |
| 1230 | can say |
| 1231 | |
| 1232 | if (regex($might_be_a_regex) eq '(?:foo)') { } |
| 1233 | |
| 1234 | and not worry about undefined values. |
| 1235 | */ |
| 1236 | XSRETURN_NO; |
| 1237 | } |
| 1238 | } |
| 1239 | /* NOT-REACHED */ |
| 1240 | } |
| 1241 | |
| 1242 | XS(XS_Tie_Hash_NamedCapture_FETCH) |
| 1243 | { |
| 1244 | dVAR; |
| 1245 | dXSARGS; |
| 1246 | REGEXP * rx; |
| 1247 | U32 flags; |
| 1248 | SV * ret; |
| 1249 | |
| 1250 | if (items != 2) |
| 1251 | croak_xs_usage(cv, "$key, $flags"); |
| 1252 | |
| 1253 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1254 | |
| 1255 | if (!rx || !SvROK(ST(0))) |
| 1256 | XSRETURN_UNDEF; |
| 1257 | |
| 1258 | SP -= items; |
| 1259 | |
| 1260 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1261 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(1), flags); |
| 1262 | |
| 1263 | SPAGAIN; |
| 1264 | |
| 1265 | if (ret) { |
| 1266 | mXPUSHs(ret); |
| 1267 | PUTBACK; |
| 1268 | return; |
| 1269 | } |
| 1270 | XSRETURN_UNDEF; |
| 1271 | } |
| 1272 | |
| 1273 | XS(XS_Tie_Hash_NamedCapture_STORE) |
| 1274 | { |
| 1275 | dVAR; |
| 1276 | dXSARGS; |
| 1277 | REGEXP * rx; |
| 1278 | U32 flags; |
| 1279 | |
| 1280 | if (items != 3) |
| 1281 | croak_xs_usage(cv, "$key, $value, $flags"); |
| 1282 | |
| 1283 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1284 | |
| 1285 | if (!rx || !SvROK(ST(0))) { |
| 1286 | if (!PL_localizing) |
| 1287 | Perl_croak_no_modify(aTHX); |
| 1288 | else |
| 1289 | XSRETURN_UNDEF; |
| 1290 | } |
| 1291 | |
| 1292 | SP -= items; |
| 1293 | |
| 1294 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1295 | CALLREG_NAMED_BUFF_STORE(rx,ST(1), ST(2), flags); |
| 1296 | } |
| 1297 | |
| 1298 | XS(XS_Tie_Hash_NamedCapture_DELETE) |
| 1299 | { |
| 1300 | dVAR; |
| 1301 | dXSARGS; |
| 1302 | REGEXP * rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1303 | U32 flags; |
| 1304 | |
| 1305 | if (items != 2) |
| 1306 | croak_xs_usage(cv, "$key, $flags"); |
| 1307 | |
| 1308 | if (!rx || !SvROK(ST(0))) |
| 1309 | Perl_croak_no_modify(aTHX); |
| 1310 | |
| 1311 | SP -= items; |
| 1312 | |
| 1313 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1314 | CALLREG_NAMED_BUFF_DELETE(rx, ST(1), flags); |
| 1315 | } |
| 1316 | |
| 1317 | XS(XS_Tie_Hash_NamedCapture_CLEAR) |
| 1318 | { |
| 1319 | dVAR; |
| 1320 | dXSARGS; |
| 1321 | REGEXP * rx; |
| 1322 | U32 flags; |
| 1323 | |
| 1324 | if (items != 1) |
| 1325 | croak_xs_usage(cv, "$flags"); |
| 1326 | |
| 1327 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1328 | |
| 1329 | if (!rx || !SvROK(ST(0))) |
| 1330 | Perl_croak_no_modify(aTHX); |
| 1331 | |
| 1332 | SP -= items; |
| 1333 | |
| 1334 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1335 | CALLREG_NAMED_BUFF_CLEAR(rx, flags); |
| 1336 | } |
| 1337 | |
| 1338 | XS(XS_Tie_Hash_NamedCapture_EXISTS) |
| 1339 | { |
| 1340 | dVAR; |
| 1341 | dXSARGS; |
| 1342 | REGEXP * rx; |
| 1343 | U32 flags; |
| 1344 | SV * ret; |
| 1345 | |
| 1346 | if (items != 2) |
| 1347 | croak_xs_usage(cv, "$key, $flags"); |
| 1348 | |
| 1349 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1350 | |
| 1351 | if (!rx || !SvROK(ST(0))) |
| 1352 | XSRETURN_UNDEF; |
| 1353 | |
| 1354 | SP -= items; |
| 1355 | |
| 1356 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1357 | ret = CALLREG_NAMED_BUFF_EXISTS(rx, ST(1), flags); |
| 1358 | |
| 1359 | SPAGAIN; |
| 1360 | |
| 1361 | XPUSHs(ret); |
| 1362 | PUTBACK; |
| 1363 | return; |
| 1364 | } |
| 1365 | |
| 1366 | XS(XS_Tie_Hash_NamedCapture_FIRSTK) |
| 1367 | { |
| 1368 | dVAR; |
| 1369 | dXSARGS; |
| 1370 | REGEXP * rx; |
| 1371 | U32 flags; |
| 1372 | SV * ret; |
| 1373 | |
| 1374 | if (items != 1) |
| 1375 | croak_xs_usage(cv, ""); |
| 1376 | |
| 1377 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1378 | |
| 1379 | if (!rx || !SvROK(ST(0))) |
| 1380 | XSRETURN_UNDEF; |
| 1381 | |
| 1382 | SP -= items; |
| 1383 | |
| 1384 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1385 | ret = CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags); |
| 1386 | |
| 1387 | SPAGAIN; |
| 1388 | |
| 1389 | if (ret) { |
| 1390 | mXPUSHs(ret); |
| 1391 | PUTBACK; |
| 1392 | } else { |
| 1393 | XSRETURN_UNDEF; |
| 1394 | } |
| 1395 | |
| 1396 | } |
| 1397 | |
| 1398 | XS(XS_Tie_Hash_NamedCapture_NEXTK) |
| 1399 | { |
| 1400 | dVAR; |
| 1401 | dXSARGS; |
| 1402 | REGEXP * rx; |
| 1403 | U32 flags; |
| 1404 | SV * ret; |
| 1405 | |
| 1406 | if (items != 2) |
| 1407 | croak_xs_usage(cv, "$lastkey"); |
| 1408 | |
| 1409 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1410 | |
| 1411 | if (!rx || !SvROK(ST(0))) |
| 1412 | XSRETURN_UNDEF; |
| 1413 | |
| 1414 | SP -= items; |
| 1415 | |
| 1416 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1417 | ret = CALLREG_NAMED_BUFF_NEXTKEY(rx, ST(1), flags); |
| 1418 | |
| 1419 | SPAGAIN; |
| 1420 | |
| 1421 | if (ret) { |
| 1422 | mXPUSHs(ret); |
| 1423 | } else { |
| 1424 | XSRETURN_UNDEF; |
| 1425 | } |
| 1426 | PUTBACK; |
| 1427 | } |
| 1428 | |
| 1429 | XS(XS_Tie_Hash_NamedCapture_SCALAR) |
| 1430 | { |
| 1431 | dVAR; |
| 1432 | dXSARGS; |
| 1433 | REGEXP * rx; |
| 1434 | U32 flags; |
| 1435 | SV * ret; |
| 1436 | |
| 1437 | if (items != 1) |
| 1438 | croak_xs_usage(cv, ""); |
| 1439 | |
| 1440 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1441 | |
| 1442 | if (!rx || !SvROK(ST(0))) |
| 1443 | XSRETURN_UNDEF; |
| 1444 | |
| 1445 | SP -= items; |
| 1446 | |
| 1447 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1448 | ret = CALLREG_NAMED_BUFF_SCALAR(rx, flags); |
| 1449 | |
| 1450 | SPAGAIN; |
| 1451 | |
| 1452 | if (ret) { |
| 1453 | mXPUSHs(ret); |
| 1454 | PUTBACK; |
| 1455 | return; |
| 1456 | } else { |
| 1457 | XSRETURN_UNDEF; |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | XS(XS_Tie_Hash_NamedCapture_flags) |
| 1462 | { |
| 1463 | dVAR; |
| 1464 | dXSARGS; |
| 1465 | |
| 1466 | if (items != 0) |
| 1467 | croak_xs_usage(cv, ""); |
| 1468 | |
| 1469 | mXPUSHu(RXapif_ONE); |
| 1470 | mXPUSHu(RXapif_ALL); |
| 1471 | PUTBACK; |
| 1472 | return; |
| 1473 | } |
| 1474 | |
| 1475 | struct xsub_details { |
| 1476 | const char *name; |
| 1477 | XSUBADDR_t xsub; |
| 1478 | const char *proto; |
| 1479 | }; |
| 1480 | |
| 1481 | struct xsub_details details[] = { |
| 1482 | {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL}, |
| 1483 | {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL}, |
| 1484 | {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL}, |
| 1485 | {"UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, NULL}, |
| 1486 | {"version::()", XS_version_noop, NULL}, |
| 1487 | {"version::new", XS_version_new, NULL}, |
| 1488 | {"version::parse", XS_version_new, NULL}, |
| 1489 | {"version::(\"\"", XS_version_stringify, NULL}, |
| 1490 | {"version::stringify", XS_version_stringify, NULL}, |
| 1491 | {"version::(0+", XS_version_numify, NULL}, |
| 1492 | {"version::numify", XS_version_numify, NULL}, |
| 1493 | {"version::normal", XS_version_normal, NULL}, |
| 1494 | {"version::(cmp", XS_version_vcmp, NULL}, |
| 1495 | {"version::(<=>", XS_version_vcmp, NULL}, |
| 1496 | {"version::vcmp", XS_version_vcmp, NULL}, |
| 1497 | {"version::(bool", XS_version_boolean, NULL}, |
| 1498 | {"version::boolean", XS_version_boolean, NULL}, |
| 1499 | {"version::(nomethod", XS_version_noop, NULL}, |
| 1500 | {"version::noop", XS_version_noop, NULL}, |
| 1501 | {"version::is_alpha", XS_version_is_alpha, NULL}, |
| 1502 | {"version::qv", XS_version_qv, NULL}, |
| 1503 | {"version::declare", XS_version_qv, NULL}, |
| 1504 | {"version::is_qv", XS_version_is_qv, NULL}, |
| 1505 | {"utf8::is_utf8", XS_utf8_is_utf8, NULL}, |
| 1506 | {"utf8::valid", XS_utf8_valid, NULL}, |
| 1507 | {"utf8::encode", XS_utf8_encode, NULL}, |
| 1508 | {"utf8::decode", XS_utf8_decode, NULL}, |
| 1509 | {"utf8::upgrade", XS_utf8_upgrade, NULL}, |
| 1510 | {"utf8::downgrade", XS_utf8_downgrade, NULL}, |
| 1511 | {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL}, |
| 1512 | {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL}, |
| 1513 | {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"}, |
| 1514 | {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"}, |
| 1515 | {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"}, |
| 1516 | {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"}, |
| 1517 | {"Internals::hash_seed", XS_Internals_hash_seed, ""}, |
| 1518 | {"Internals::rehash_seed", XS_Internals_rehash_seed, ""}, |
| 1519 | {"Internals::HvREHASH", XS_Internals_HvREHASH, "\\%"}, |
| 1520 | {"re::is_regexp", XS_re_is_regexp, "$"}, |
| 1521 | {"re::regname", XS_re_regname, ";$$"}, |
| 1522 | {"re::regnames", XS_re_regnames, ";$"}, |
| 1523 | {"re::regnames_count", XS_re_regnames_count, ""}, |
| 1524 | {"re::regexp_pattern", XS_re_regexp_pattern, "$"}, |
| 1525 | {"Tie::Hash::NamedCapture::FETCH", XS_Tie_Hash_NamedCapture_FETCH, NULL}, |
| 1526 | {"Tie::Hash::NamedCapture::STORE", XS_Tie_Hash_NamedCapture_STORE, NULL}, |
| 1527 | {"Tie::Hash::NamedCapture::DELETE", XS_Tie_Hash_NamedCapture_DELETE, NULL}, |
| 1528 | {"Tie::Hash::NamedCapture::CLEAR", XS_Tie_Hash_NamedCapture_CLEAR, NULL}, |
| 1529 | {"Tie::Hash::NamedCapture::EXISTS", XS_Tie_Hash_NamedCapture_EXISTS, NULL}, |
| 1530 | {"Tie::Hash::NamedCapture::FIRSTKEY", XS_Tie_Hash_NamedCapture_FIRSTK, NULL}, |
| 1531 | {"Tie::Hash::NamedCapture::NEXTKEY", XS_Tie_Hash_NamedCapture_NEXTK, NULL}, |
| 1532 | {"Tie::Hash::NamedCapture::SCALAR", XS_Tie_Hash_NamedCapture_SCALAR, NULL}, |
| 1533 | {"Tie::Hash::NamedCapture::flags", XS_Tie_Hash_NamedCapture_flags, NULL} |
| 1534 | }; |
| 1535 | |
| 1536 | void |
| 1537 | Perl_boot_core_UNIVERSAL(pTHX) |
| 1538 | { |
| 1539 | dVAR; |
| 1540 | static const char file[] = __FILE__; |
| 1541 | struct xsub_details *xsub = details; |
| 1542 | const struct xsub_details *end |
| 1543 | = details + sizeof(details) / sizeof(details[0]); |
| 1544 | |
| 1545 | do { |
| 1546 | newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0); |
| 1547 | } while (++xsub < end); |
| 1548 | |
| 1549 | /* register the overloading (type 'A') magic */ |
| 1550 | PL_amagic_generation++; |
| 1551 | |
| 1552 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
| 1553 | CvFILE(newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL)) |
| 1554 | = (char *)file; |
| 1555 | } |
| 1556 | |
| 1557 | /* |
| 1558 | * Local variables: |
| 1559 | * c-indentation-style: bsd |
| 1560 | * c-basic-offset: 4 |
| 1561 | * indent-tabs-mode: t |
| 1562 | * End: |
| 1563 | * |
| 1564 | * ex: set ts=8 sts=4 sw=4 noet: |
| 1565 | */ |