| 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 | return FALSE; |
| 177 | |
| 178 | if (sv_isobject(sv)) { |
| 179 | classname = sv_reftype(SvRV(sv),TRUE); |
| 180 | } else { |
| 181 | classname = SvPV_nolen(sv); |
| 182 | } |
| 183 | |
| 184 | if (strEQ(name,classname)) |
| 185 | return TRUE; |
| 186 | |
| 187 | PUSHMARK(SP); |
| 188 | XPUSHs(sv); |
| 189 | mXPUSHs(newSVpv(name, 0)); |
| 190 | PUTBACK; |
| 191 | |
| 192 | methodname = newSVpvs_flags("isa", SVs_TEMP); |
| 193 | /* ugly hack: use the SvSCREAM flag so S_method_common |
| 194 | * can figure out we're calling DOES() and not isa(), |
| 195 | * and report eventual errors correctly. --rgs */ |
| 196 | SvSCREAM_on(methodname); |
| 197 | call_sv(methodname, G_SCALAR | G_METHOD); |
| 198 | SPAGAIN; |
| 199 | |
| 200 | does_it = SvTRUE( TOPs ); |
| 201 | FREETMPS; |
| 202 | LEAVE; |
| 203 | |
| 204 | return does_it; |
| 205 | } |
| 206 | |
| 207 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
| 208 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); |
| 209 | PERL_XS_EXPORT_C void XS_UNIVERSAL_DOES(pTHX_ CV *cv); |
| 210 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); |
| 211 | XS(XS_version_new); |
| 212 | XS(XS_version_stringify); |
| 213 | XS(XS_version_numify); |
| 214 | XS(XS_version_normal); |
| 215 | XS(XS_version_vcmp); |
| 216 | XS(XS_version_boolean); |
| 217 | #ifdef HASATTRIBUTE_NORETURN |
| 218 | XS(XS_version_noop) __attribute__noreturn__; |
| 219 | #else |
| 220 | XS(XS_version_noop); |
| 221 | #endif |
| 222 | XS(XS_version_is_alpha); |
| 223 | XS(XS_version_qv); |
| 224 | XS(XS_version_is_qv); |
| 225 | XS(XS_utf8_is_utf8); |
| 226 | XS(XS_utf8_valid); |
| 227 | XS(XS_utf8_encode); |
| 228 | XS(XS_utf8_decode); |
| 229 | XS(XS_utf8_upgrade); |
| 230 | XS(XS_utf8_downgrade); |
| 231 | XS(XS_utf8_unicode_to_native); |
| 232 | XS(XS_utf8_native_to_unicode); |
| 233 | XS(XS_Internals_SvREADONLY); |
| 234 | XS(XS_Internals_SvREFCNT); |
| 235 | XS(XS_Internals_hv_clear_placehold); |
| 236 | XS(XS_PerlIO_get_layers); |
| 237 | XS(XS_Internals_hash_seed); |
| 238 | XS(XS_Internals_rehash_seed); |
| 239 | XS(XS_Internals_HvREHASH); |
| 240 | XS(XS_re_is_regexp); |
| 241 | XS(XS_re_regname); |
| 242 | XS(XS_re_regnames); |
| 243 | XS(XS_re_regnames_count); |
| 244 | XS(XS_re_regexp_pattern); |
| 245 | XS(XS_Tie_Hash_NamedCapture_FETCH); |
| 246 | XS(XS_Tie_Hash_NamedCapture_STORE); |
| 247 | XS(XS_Tie_Hash_NamedCapture_DELETE); |
| 248 | XS(XS_Tie_Hash_NamedCapture_CLEAR); |
| 249 | XS(XS_Tie_Hash_NamedCapture_EXISTS); |
| 250 | XS(XS_Tie_Hash_NamedCapture_FIRSTK); |
| 251 | XS(XS_Tie_Hash_NamedCapture_NEXTK); |
| 252 | XS(XS_Tie_Hash_NamedCapture_SCALAR); |
| 253 | XS(XS_Tie_Hash_NamedCapture_flags); |
| 254 | |
| 255 | void |
| 256 | Perl_boot_core_UNIVERSAL(pTHX) |
| 257 | { |
| 258 | dVAR; |
| 259 | static const char file[] = __FILE__; |
| 260 | |
| 261 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
| 262 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
| 263 | newXS("UNIVERSAL::DOES", XS_UNIVERSAL_DOES, file); |
| 264 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
| 265 | { |
| 266 | /* register the overloading (type 'A') magic */ |
| 267 | PL_amagic_generation++; |
| 268 | /* Make it findable via fetchmethod */ |
| 269 | newXS("version::()", XS_version_noop, file); |
| 270 | newXS("version::new", XS_version_new, file); |
| 271 | newXS("version::parse", XS_version_new, file); |
| 272 | newXS("version::(\"\"", XS_version_stringify, file); |
| 273 | newXS("version::stringify", XS_version_stringify, file); |
| 274 | newXS("version::(0+", XS_version_numify, file); |
| 275 | newXS("version::numify", XS_version_numify, file); |
| 276 | newXS("version::normal", XS_version_normal, file); |
| 277 | newXS("version::(cmp", XS_version_vcmp, file); |
| 278 | newXS("version::(<=>", XS_version_vcmp, file); |
| 279 | newXS("version::vcmp", XS_version_vcmp, file); |
| 280 | newXS("version::(bool", XS_version_boolean, file); |
| 281 | newXS("version::boolean", XS_version_boolean, file); |
| 282 | newXS("version::(nomethod", XS_version_noop, file); |
| 283 | newXS("version::noop", XS_version_noop, file); |
| 284 | newXS("version::is_alpha", XS_version_is_alpha, file); |
| 285 | newXS("version::qv", XS_version_qv, file); |
| 286 | newXS("version::declare", XS_version_qv, file); |
| 287 | newXS("version::is_qv", XS_version_is_qv, file); |
| 288 | } |
| 289 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
| 290 | newXS("utf8::valid", XS_utf8_valid, file); |
| 291 | newXS("utf8::encode", XS_utf8_encode, file); |
| 292 | newXS("utf8::decode", XS_utf8_decode, file); |
| 293 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
| 294 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
| 295 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
| 296 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
| 297 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
| 298 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
| 299 | newXSproto("Internals::hv_clear_placeholders", |
| 300 | XS_Internals_hv_clear_placehold, file, "\\%"); |
| 301 | newXSproto("PerlIO::get_layers", |
| 302 | XS_PerlIO_get_layers, file, "*;@"); |
| 303 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
| 304 | CvFILE(newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL)) |
| 305 | = (char *)file; |
| 306 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
| 307 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
| 308 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
| 309 | newXSproto("re::is_regexp", XS_re_is_regexp, file, "$"); |
| 310 | newXSproto("re::regname", XS_re_regname, file, ";$$"); |
| 311 | newXSproto("re::regnames", XS_re_regnames, file, ";$"); |
| 312 | newXSproto("re::regnames_count", XS_re_regnames_count, file, ""); |
| 313 | newXSproto("re::regexp_pattern", XS_re_regexp_pattern, file, "$"); |
| 314 | newXS("Tie::Hash::NamedCapture::FETCH", XS_Tie_Hash_NamedCapture_FETCH, file); |
| 315 | newXS("Tie::Hash::NamedCapture::STORE", XS_Tie_Hash_NamedCapture_STORE, file); |
| 316 | newXS("Tie::Hash::NamedCapture::DELETE", XS_Tie_Hash_NamedCapture_DELETE, file); |
| 317 | newXS("Tie::Hash::NamedCapture::CLEAR", XS_Tie_Hash_NamedCapture_CLEAR, file); |
| 318 | newXS("Tie::Hash::NamedCapture::EXISTS", XS_Tie_Hash_NamedCapture_EXISTS, file); |
| 319 | newXS("Tie::Hash::NamedCapture::FIRSTKEY", XS_Tie_Hash_NamedCapture_FIRSTK, file); |
| 320 | newXS("Tie::Hash::NamedCapture::NEXTKEY", XS_Tie_Hash_NamedCapture_NEXTK, file); |
| 321 | newXS("Tie::Hash::NamedCapture::SCALAR", XS_Tie_Hash_NamedCapture_SCALAR, file); |
| 322 | newXS("Tie::Hash::NamedCapture::flags", XS_Tie_Hash_NamedCapture_flags, file); |
| 323 | } |
| 324 | |
| 325 | /* |
| 326 | =for apidoc croak_xs_usage |
| 327 | |
| 328 | A specialised variant of C<croak()> for emitting the usage message for xsubs |
| 329 | |
| 330 | croak_xs_usage(cv, "eee_yow"); |
| 331 | |
| 332 | works out the package name and subroutine name from C<cv>, and then calls |
| 333 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: |
| 334 | |
| 335 | Perl_croak(aTHX_ "Usage %s::%s(%s)", "ouch" "awk", "eee_yow"); |
| 336 | |
| 337 | =cut |
| 338 | */ |
| 339 | |
| 340 | void |
| 341 | Perl_croak_xs_usage(pTHX_ const CV *const cv, const char *const params) |
| 342 | { |
| 343 | const GV *const gv = CvGV(cv); |
| 344 | |
| 345 | PERL_ARGS_ASSERT_CROAK_XS_USAGE; |
| 346 | |
| 347 | if (gv) { |
| 348 | const char *const gvname = GvNAME(gv); |
| 349 | const HV *const stash = GvSTASH(gv); |
| 350 | const char *const hvname = stash ? HvNAME_get(stash) : NULL; |
| 351 | |
| 352 | if (hvname) |
| 353 | Perl_croak(aTHX_ "Usage: %s::%s(%s)", hvname, gvname, params); |
| 354 | else |
| 355 | Perl_croak(aTHX_ "Usage: %s(%s)", gvname, params); |
| 356 | } else { |
| 357 | /* Pants. I don't think that it should be possible to get here. */ |
| 358 | Perl_croak(aTHX_ "Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params); |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | XS(XS_UNIVERSAL_isa) |
| 363 | { |
| 364 | dVAR; |
| 365 | dXSARGS; |
| 366 | |
| 367 | if (items != 2) |
| 368 | croak_xs_usage(cv, "reference, kind"); |
| 369 | else { |
| 370 | SV * const sv = ST(0); |
| 371 | const char *name; |
| 372 | |
| 373 | SvGETMAGIC(sv); |
| 374 | |
| 375 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 376 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
| 377 | XSRETURN_UNDEF; |
| 378 | |
| 379 | name = SvPV_nolen_const(ST(1)); |
| 380 | |
| 381 | ST(0) = boolSV(sv_derived_from(sv, name)); |
| 382 | XSRETURN(1); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | XS(XS_UNIVERSAL_can) |
| 387 | { |
| 388 | dVAR; |
| 389 | dXSARGS; |
| 390 | SV *sv; |
| 391 | const char *name; |
| 392 | SV *rv; |
| 393 | HV *pkg = NULL; |
| 394 | |
| 395 | if (items != 2) |
| 396 | croak_xs_usage(cv, "object-ref, method"); |
| 397 | |
| 398 | sv = ST(0); |
| 399 | |
| 400 | SvGETMAGIC(sv); |
| 401 | |
| 402 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
| 403 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
| 404 | XSRETURN_UNDEF; |
| 405 | |
| 406 | name = SvPV_nolen_const(ST(1)); |
| 407 | rv = &PL_sv_undef; |
| 408 | |
| 409 | if (SvROK(sv)) { |
| 410 | sv = MUTABLE_SV(SvRV(sv)); |
| 411 | if (SvOBJECT(sv)) |
| 412 | pkg = SvSTASH(sv); |
| 413 | } |
| 414 | else { |
| 415 | pkg = gv_stashsv(sv, 0); |
| 416 | } |
| 417 | |
| 418 | if (pkg) { |
| 419 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
| 420 | if (gv && isGV(gv)) |
| 421 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
| 422 | } |
| 423 | |
| 424 | ST(0) = rv; |
| 425 | XSRETURN(1); |
| 426 | } |
| 427 | |
| 428 | XS(XS_UNIVERSAL_DOES) |
| 429 | { |
| 430 | dVAR; |
| 431 | dXSARGS; |
| 432 | PERL_UNUSED_ARG(cv); |
| 433 | |
| 434 | if (items != 2) |
| 435 | Perl_croak(aTHX_ "Usage: invocant->DOES(kind)"); |
| 436 | else { |
| 437 | SV * const sv = ST(0); |
| 438 | const char *name; |
| 439 | |
| 440 | name = SvPV_nolen_const(ST(1)); |
| 441 | if (sv_does( sv, name )) |
| 442 | XSRETURN_YES; |
| 443 | |
| 444 | XSRETURN_NO; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | XS(XS_UNIVERSAL_VERSION) |
| 449 | { |
| 450 | dVAR; |
| 451 | dXSARGS; |
| 452 | HV *pkg; |
| 453 | GV **gvp; |
| 454 | GV *gv; |
| 455 | SV *sv; |
| 456 | const char *undef; |
| 457 | PERL_UNUSED_ARG(cv); |
| 458 | |
| 459 | if (SvROK(ST(0))) { |
| 460 | sv = MUTABLE_SV(SvRV(ST(0))); |
| 461 | if (!SvOBJECT(sv)) |
| 462 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
| 463 | pkg = SvSTASH(sv); |
| 464 | } |
| 465 | else { |
| 466 | pkg = gv_stashsv(ST(0), 0); |
| 467 | } |
| 468 | |
| 469 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
| 470 | |
| 471 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
| 472 | SV * const nsv = sv_newmortal(); |
| 473 | sv_setsv(nsv, sv); |
| 474 | sv = nsv; |
| 475 | if ( !sv_derived_from(sv, "version")) |
| 476 | upg_version(sv, FALSE); |
| 477 | undef = NULL; |
| 478 | } |
| 479 | else { |
| 480 | sv = &PL_sv_undef; |
| 481 | undef = "(undef)"; |
| 482 | } |
| 483 | |
| 484 | if (items > 1) { |
| 485 | SV *req = ST(1); |
| 486 | |
| 487 | if (undef) { |
| 488 | if (pkg) { |
| 489 | const char * const name = HvNAME_get(pkg); |
| 490 | Perl_croak(aTHX_ |
| 491 | "%s does not define $%s::VERSION--version check failed", |
| 492 | name, name); |
| 493 | } else { |
| 494 | Perl_croak(aTHX_ |
| 495 | "%s defines neither package nor VERSION--version check failed", |
| 496 | SvPVx_nolen_const(ST(0)) ); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | if ( !sv_derived_from(req, "version")) { |
| 501 | /* req may very well be R/O, so create a new object */ |
| 502 | req = sv_2mortal( new_version(req) ); |
| 503 | } |
| 504 | |
| 505 | if ( vcmp( req, sv ) > 0 ) { |
| 506 | if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) { |
| 507 | Perl_croak(aTHX_ "%s version %"SVf" required--" |
| 508 | "this is only version %"SVf"", HvNAME_get(pkg), |
| 509 | SVfARG(vnormal(req)), |
| 510 | SVfARG(vnormal(sv))); |
| 511 | } else { |
| 512 | Perl_croak(aTHX_ "%s version %"SVf" required--" |
| 513 | "this is only version %"SVf"", HvNAME_get(pkg), |
| 514 | SVfARG(vstringify(req)), |
| 515 | SVfARG(vstringify(sv))); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | } |
| 520 | |
| 521 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
| 522 | ST(0) = vstringify(sv); |
| 523 | } else { |
| 524 | ST(0) = sv; |
| 525 | } |
| 526 | |
| 527 | XSRETURN(1); |
| 528 | } |
| 529 | |
| 530 | XS(XS_version_new) |
| 531 | { |
| 532 | dVAR; |
| 533 | dXSARGS; |
| 534 | if (items > 3) |
| 535 | croak_xs_usage(cv, "class, version"); |
| 536 | SP -= items; |
| 537 | { |
| 538 | SV *vs = ST(1); |
| 539 | SV *rv; |
| 540 | const char * const classname = |
| 541 | sv_isobject(ST(0)) /* get the class if called as an object method */ |
| 542 | ? HvNAME(SvSTASH(SvRV(ST(0)))) |
| 543 | : (char *)SvPV_nolen(ST(0)); |
| 544 | |
| 545 | if ( items == 1 || vs == &PL_sv_undef ) { /* no param or explicit undef */ |
| 546 | /* create empty object */ |
| 547 | vs = sv_newmortal(); |
| 548 | sv_setpvs(vs,""); |
| 549 | } |
| 550 | else if ( items == 3 ) { |
| 551 | vs = sv_newmortal(); |
| 552 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
| 553 | } |
| 554 | |
| 555 | rv = new_version(vs); |
| 556 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
| 557 | sv_bless(rv, gv_stashpv(classname, GV_ADD)); |
| 558 | |
| 559 | mPUSHs(rv); |
| 560 | PUTBACK; |
| 561 | return; |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | XS(XS_version_stringify) |
| 566 | { |
| 567 | dVAR; |
| 568 | dXSARGS; |
| 569 | if (items < 1) |
| 570 | croak_xs_usage(cv, "lobj, ..."); |
| 571 | SP -= items; |
| 572 | { |
| 573 | SV * lobj; |
| 574 | |
| 575 | if (sv_derived_from(ST(0), "version")) { |
| 576 | lobj = SvRV(ST(0)); |
| 577 | } |
| 578 | else |
| 579 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 580 | |
| 581 | mPUSHs(vstringify(lobj)); |
| 582 | |
| 583 | PUTBACK; |
| 584 | return; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | XS(XS_version_numify) |
| 589 | { |
| 590 | dVAR; |
| 591 | dXSARGS; |
| 592 | if (items < 1) |
| 593 | croak_xs_usage(cv, "lobj, ..."); |
| 594 | SP -= items; |
| 595 | { |
| 596 | SV * lobj; |
| 597 | |
| 598 | if (sv_derived_from(ST(0), "version")) { |
| 599 | lobj = SvRV(ST(0)); |
| 600 | } |
| 601 | else |
| 602 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 603 | |
| 604 | mPUSHs(vnumify(lobj)); |
| 605 | |
| 606 | PUTBACK; |
| 607 | return; |
| 608 | } |
| 609 | } |
| 610 | |
| 611 | XS(XS_version_normal) |
| 612 | { |
| 613 | dVAR; |
| 614 | dXSARGS; |
| 615 | if (items < 1) |
| 616 | croak_xs_usage(cv, "lobj, ..."); |
| 617 | SP -= items; |
| 618 | { |
| 619 | SV * lobj; |
| 620 | |
| 621 | if (sv_derived_from(ST(0), "version")) { |
| 622 | lobj = SvRV(ST(0)); |
| 623 | } |
| 624 | else |
| 625 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 626 | |
| 627 | mPUSHs(vnormal(lobj)); |
| 628 | |
| 629 | PUTBACK; |
| 630 | return; |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | XS(XS_version_vcmp) |
| 635 | { |
| 636 | dVAR; |
| 637 | dXSARGS; |
| 638 | if (items < 1) |
| 639 | croak_xs_usage(cv, "lobj, ..."); |
| 640 | SP -= items; |
| 641 | { |
| 642 | SV * lobj; |
| 643 | |
| 644 | if (sv_derived_from(ST(0), "version")) { |
| 645 | lobj = SvRV(ST(0)); |
| 646 | } |
| 647 | else |
| 648 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 649 | |
| 650 | { |
| 651 | SV *rs; |
| 652 | SV *rvs; |
| 653 | SV * robj = ST(1); |
| 654 | const IV swap = (IV)SvIV(ST(2)); |
| 655 | |
| 656 | if ( ! sv_derived_from(robj, "version") ) |
| 657 | { |
| 658 | robj = new_version(robj); |
| 659 | } |
| 660 | rvs = SvRV(robj); |
| 661 | |
| 662 | if ( swap ) |
| 663 | { |
| 664 | rs = newSViv(vcmp(rvs,lobj)); |
| 665 | } |
| 666 | else |
| 667 | { |
| 668 | rs = newSViv(vcmp(lobj,rvs)); |
| 669 | } |
| 670 | |
| 671 | mPUSHs(rs); |
| 672 | } |
| 673 | |
| 674 | PUTBACK; |
| 675 | return; |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | XS(XS_version_boolean) |
| 680 | { |
| 681 | dVAR; |
| 682 | dXSARGS; |
| 683 | if (items < 1) |
| 684 | croak_xs_usage(cv, "lobj, ..."); |
| 685 | SP -= items; |
| 686 | if (sv_derived_from(ST(0), "version")) { |
| 687 | SV * const lobj = SvRV(ST(0)); |
| 688 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
| 689 | mPUSHs(rs); |
| 690 | PUTBACK; |
| 691 | return; |
| 692 | } |
| 693 | else |
| 694 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 695 | } |
| 696 | |
| 697 | XS(XS_version_noop) |
| 698 | { |
| 699 | dVAR; |
| 700 | dXSARGS; |
| 701 | if (items < 1) |
| 702 | croak_xs_usage(cv, "lobj, ..."); |
| 703 | if (sv_derived_from(ST(0), "version")) |
| 704 | Perl_croak(aTHX_ "operation not supported with version object"); |
| 705 | else |
| 706 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 707 | #ifndef HASATTRIBUTE_NORETURN |
| 708 | XSRETURN_EMPTY; |
| 709 | #endif |
| 710 | } |
| 711 | |
| 712 | XS(XS_version_is_alpha) |
| 713 | { |
| 714 | dVAR; |
| 715 | dXSARGS; |
| 716 | if (items != 1) |
| 717 | croak_xs_usage(cv, "lobj"); |
| 718 | SP -= items; |
| 719 | if (sv_derived_from(ST(0), "version")) { |
| 720 | SV * const lobj = ST(0); |
| 721 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) ) |
| 722 | XSRETURN_YES; |
| 723 | else |
| 724 | XSRETURN_NO; |
| 725 | PUTBACK; |
| 726 | return; |
| 727 | } |
| 728 | else |
| 729 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 730 | } |
| 731 | |
| 732 | XS(XS_version_qv) |
| 733 | { |
| 734 | dVAR; |
| 735 | dXSARGS; |
| 736 | PERL_UNUSED_ARG(cv); |
| 737 | SP -= items; |
| 738 | { |
| 739 | SV * ver = ST(0); |
| 740 | SV * rv; |
| 741 | const char * classname = ""; |
| 742 | if ( items == 2 && (ST(1)) != &PL_sv_undef ) { |
| 743 | /* getting called as object or class method */ |
| 744 | ver = ST(1); |
| 745 | classname = |
| 746 | sv_isobject(ST(0)) /* class called as an object method */ |
| 747 | ? HvNAME_get(SvSTASH(SvRV(ST(0)))) |
| 748 | : (char *)SvPV_nolen(ST(0)); |
| 749 | } |
| 750 | if ( !SvVOK(ver) ) { /* not already a v-string */ |
| 751 | rv = sv_newmortal(); |
| 752 | sv_setsv(rv,ver); /* make a duplicate */ |
| 753 | upg_version(rv, TRUE); |
| 754 | } else { |
| 755 | rv = sv_2mortal(new_version(ver)); |
| 756 | } |
| 757 | if ( items == 2 && strcmp(classname,"version") ) { /* inherited new() */ |
| 758 | sv_bless(rv, gv_stashpv(classname, GV_ADD)); |
| 759 | } |
| 760 | PUSHs(rv); |
| 761 | } |
| 762 | PUTBACK; |
| 763 | return; |
| 764 | } |
| 765 | |
| 766 | XS(XS_version_is_qv) |
| 767 | { |
| 768 | dVAR; |
| 769 | dXSARGS; |
| 770 | if (items != 1) |
| 771 | croak_xs_usage(cv, "lobj"); |
| 772 | SP -= items; |
| 773 | if (sv_derived_from(ST(0), "version")) { |
| 774 | SV * const lobj = ST(0); |
| 775 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) ) |
| 776 | XSRETURN_YES; |
| 777 | else |
| 778 | XSRETURN_NO; |
| 779 | PUTBACK; |
| 780 | return; |
| 781 | } |
| 782 | else |
| 783 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 784 | } |
| 785 | |
| 786 | XS(XS_utf8_is_utf8) |
| 787 | { |
| 788 | dVAR; |
| 789 | dXSARGS; |
| 790 | if (items != 1) |
| 791 | croak_xs_usage(cv, "sv"); |
| 792 | else { |
| 793 | const SV * const sv = ST(0); |
| 794 | if (SvUTF8(sv)) |
| 795 | XSRETURN_YES; |
| 796 | else |
| 797 | XSRETURN_NO; |
| 798 | } |
| 799 | XSRETURN_EMPTY; |
| 800 | } |
| 801 | |
| 802 | XS(XS_utf8_valid) |
| 803 | { |
| 804 | dVAR; |
| 805 | dXSARGS; |
| 806 | if (items != 1) |
| 807 | croak_xs_usage(cv, "sv"); |
| 808 | else { |
| 809 | SV * const sv = ST(0); |
| 810 | STRLEN len; |
| 811 | const char * const s = SvPV_const(sv,len); |
| 812 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
| 813 | XSRETURN_YES; |
| 814 | else |
| 815 | XSRETURN_NO; |
| 816 | } |
| 817 | XSRETURN_EMPTY; |
| 818 | } |
| 819 | |
| 820 | XS(XS_utf8_encode) |
| 821 | { |
| 822 | dVAR; |
| 823 | dXSARGS; |
| 824 | if (items != 1) |
| 825 | croak_xs_usage(cv, "sv"); |
| 826 | sv_utf8_encode(ST(0)); |
| 827 | XSRETURN_EMPTY; |
| 828 | } |
| 829 | |
| 830 | XS(XS_utf8_decode) |
| 831 | { |
| 832 | dVAR; |
| 833 | dXSARGS; |
| 834 | if (items != 1) |
| 835 | croak_xs_usage(cv, "sv"); |
| 836 | else { |
| 837 | SV * const sv = ST(0); |
| 838 | const bool RETVAL = sv_utf8_decode(sv); |
| 839 | ST(0) = boolSV(RETVAL); |
| 840 | sv_2mortal(ST(0)); |
| 841 | } |
| 842 | XSRETURN(1); |
| 843 | } |
| 844 | |
| 845 | XS(XS_utf8_upgrade) |
| 846 | { |
| 847 | dVAR; |
| 848 | dXSARGS; |
| 849 | if (items != 1) |
| 850 | croak_xs_usage(cv, "sv"); |
| 851 | else { |
| 852 | SV * const sv = ST(0); |
| 853 | STRLEN RETVAL; |
| 854 | dXSTARG; |
| 855 | |
| 856 | RETVAL = sv_utf8_upgrade(sv); |
| 857 | XSprePUSH; PUSHi((IV)RETVAL); |
| 858 | } |
| 859 | XSRETURN(1); |
| 860 | } |
| 861 | |
| 862 | XS(XS_utf8_downgrade) |
| 863 | { |
| 864 | dVAR; |
| 865 | dXSARGS; |
| 866 | if (items < 1 || items > 2) |
| 867 | croak_xs_usage(cv, "sv, failok=0"); |
| 868 | else { |
| 869 | SV * const sv = ST(0); |
| 870 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
| 871 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
| 872 | |
| 873 | ST(0) = boolSV(RETVAL); |
| 874 | sv_2mortal(ST(0)); |
| 875 | } |
| 876 | XSRETURN(1); |
| 877 | } |
| 878 | |
| 879 | XS(XS_utf8_native_to_unicode) |
| 880 | { |
| 881 | dVAR; |
| 882 | dXSARGS; |
| 883 | const UV uv = SvUV(ST(0)); |
| 884 | |
| 885 | if (items > 1) |
| 886 | croak_xs_usage(cv, "sv"); |
| 887 | |
| 888 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
| 889 | XSRETURN(1); |
| 890 | } |
| 891 | |
| 892 | XS(XS_utf8_unicode_to_native) |
| 893 | { |
| 894 | dVAR; |
| 895 | dXSARGS; |
| 896 | const UV uv = SvUV(ST(0)); |
| 897 | |
| 898 | if (items > 1) |
| 899 | croak_xs_usage(cv, "sv"); |
| 900 | |
| 901 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
| 902 | XSRETURN(1); |
| 903 | } |
| 904 | |
| 905 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
| 906 | { |
| 907 | dVAR; |
| 908 | dXSARGS; |
| 909 | SV * const sv = SvRV(ST(0)); |
| 910 | PERL_UNUSED_ARG(cv); |
| 911 | |
| 912 | if (items == 1) { |
| 913 | if (SvREADONLY(sv)) |
| 914 | XSRETURN_YES; |
| 915 | else |
| 916 | XSRETURN_NO; |
| 917 | } |
| 918 | else if (items == 2) { |
| 919 | if (SvTRUE(ST(1))) { |
| 920 | SvREADONLY_on(sv); |
| 921 | XSRETURN_YES; |
| 922 | } |
| 923 | else { |
| 924 | /* I hope you really know what you are doing. */ |
| 925 | SvREADONLY_off(sv); |
| 926 | XSRETURN_NO; |
| 927 | } |
| 928 | } |
| 929 | XSRETURN_UNDEF; /* Can't happen. */ |
| 930 | } |
| 931 | |
| 932 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
| 933 | { |
| 934 | dVAR; |
| 935 | dXSARGS; |
| 936 | SV * const sv = SvRV(ST(0)); |
| 937 | PERL_UNUSED_ARG(cv); |
| 938 | |
| 939 | if (items == 1) |
| 940 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
| 941 | else if (items == 2) { |
| 942 | /* I hope you really know what you are doing. */ |
| 943 | SvREFCNT(sv) = SvIV(ST(1)); |
| 944 | XSRETURN_IV(SvREFCNT(sv)); |
| 945 | } |
| 946 | XSRETURN_UNDEF; /* Can't happen. */ |
| 947 | } |
| 948 | |
| 949 | XS(XS_Internals_hv_clear_placehold) |
| 950 | { |
| 951 | dVAR; |
| 952 | dXSARGS; |
| 953 | |
| 954 | if (items != 1) |
| 955 | croak_xs_usage(cv, "hv"); |
| 956 | else { |
| 957 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); |
| 958 | hv_clear_placeholders(hv); |
| 959 | XSRETURN(0); |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | XS(XS_PerlIO_get_layers) |
| 964 | { |
| 965 | dVAR; |
| 966 | dXSARGS; |
| 967 | if (items < 1 || items % 2 == 0) |
| 968 | croak_xs_usage(cv, "filehandle[,args]"); |
| 969 | #ifdef USE_PERLIO |
| 970 | { |
| 971 | SV * sv; |
| 972 | GV * gv; |
| 973 | IO * io; |
| 974 | bool input = TRUE; |
| 975 | bool details = FALSE; |
| 976 | |
| 977 | if (items > 1) { |
| 978 | SV * const *svp; |
| 979 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
| 980 | SV * const * const varp = svp; |
| 981 | SV * const * const valp = svp + 1; |
| 982 | STRLEN klen; |
| 983 | const char * const key = SvPV_const(*varp, klen); |
| 984 | |
| 985 | switch (*key) { |
| 986 | case 'i': |
| 987 | if (klen == 5 && memEQ(key, "input", 5)) { |
| 988 | input = SvTRUE(*valp); |
| 989 | break; |
| 990 | } |
| 991 | goto fail; |
| 992 | case 'o': |
| 993 | if (klen == 6 && memEQ(key, "output", 6)) { |
| 994 | input = !SvTRUE(*valp); |
| 995 | break; |
| 996 | } |
| 997 | goto fail; |
| 998 | case 'd': |
| 999 | if (klen == 7 && memEQ(key, "details", 7)) { |
| 1000 | details = SvTRUE(*valp); |
| 1001 | break; |
| 1002 | } |
| 1003 | goto fail; |
| 1004 | default: |
| 1005 | fail: |
| 1006 | Perl_croak(aTHX_ |
| 1007 | "get_layers: unknown argument '%s'", |
| 1008 | key); |
| 1009 | } |
| 1010 | } |
| 1011 | |
| 1012 | SP -= (items - 1); |
| 1013 | } |
| 1014 | |
| 1015 | sv = POPs; |
| 1016 | gv = MUTABLE_GV(sv); |
| 1017 | |
| 1018 | if (!isGV(sv)) { |
| 1019 | if (SvROK(sv) && isGV(SvRV(sv))) |
| 1020 | gv = MUTABLE_GV(SvRV(sv)); |
| 1021 | else if (SvPOKp(sv)) |
| 1022 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
| 1023 | } |
| 1024 | |
| 1025 | if (gv && (io = GvIO(gv))) { |
| 1026 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
| 1027 | IoIFP(io) : IoOFP(io)); |
| 1028 | I32 i; |
| 1029 | const I32 last = av_len(av); |
| 1030 | I32 nitem = 0; |
| 1031 | |
| 1032 | for (i = last; i >= 0; i -= 3) { |
| 1033 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
| 1034 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); |
| 1035 | SV * const * const flgsvp = av_fetch(av, i, FALSE); |
| 1036 | |
| 1037 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
| 1038 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); |
| 1039 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
| 1040 | |
| 1041 | if (details) { |
| 1042 | /* Indents of 5? Yuck. */ |
| 1043 | /* We know that PerlIO_get_layers creates a new SV for |
| 1044 | the name and flags, so we can just take a reference |
| 1045 | and "steal" it when we free the AV below. */ |
| 1046 | XPUSHs(namok |
| 1047 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
| 1048 | : &PL_sv_undef); |
| 1049 | XPUSHs(argok |
| 1050 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
| 1051 | SvCUR(*argsvp), |
| 1052 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) |
| 1053 | | SVs_TEMP) |
| 1054 | : &PL_sv_undef); |
| 1055 | XPUSHs(flgok |
| 1056 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
| 1057 | : &PL_sv_undef); |
| 1058 | nitem += 3; |
| 1059 | } |
| 1060 | else { |
| 1061 | if (namok && argok) |
| 1062 | XPUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
| 1063 | SVfARG(*namsvp), |
| 1064 | SVfARG(*argsvp)))); |
| 1065 | else if (namok) |
| 1066 | XPUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
| 1067 | else |
| 1068 | XPUSHs(&PL_sv_undef); |
| 1069 | nitem++; |
| 1070 | if (flgok) { |
| 1071 | const IV flags = SvIVX(*flgsvp); |
| 1072 | |
| 1073 | if (flags & PERLIO_F_UTF8) { |
| 1074 | XPUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
| 1075 | nitem++; |
| 1076 | } |
| 1077 | } |
| 1078 | } |
| 1079 | } |
| 1080 | |
| 1081 | SvREFCNT_dec(av); |
| 1082 | |
| 1083 | XSRETURN(nitem); |
| 1084 | } |
| 1085 | } |
| 1086 | #endif |
| 1087 | |
| 1088 | XSRETURN(0); |
| 1089 | } |
| 1090 | |
| 1091 | XS(XS_Internals_hash_seed) |
| 1092 | { |
| 1093 | dVAR; |
| 1094 | /* Using dXSARGS would also have dITEM and dSP, |
| 1095 | * which define 2 unused local variables. */ |
| 1096 | dAXMARK; |
| 1097 | PERL_UNUSED_ARG(cv); |
| 1098 | PERL_UNUSED_VAR(mark); |
| 1099 | XSRETURN_UV(PERL_HASH_SEED); |
| 1100 | } |
| 1101 | |
| 1102 | XS(XS_Internals_rehash_seed) |
| 1103 | { |
| 1104 | dVAR; |
| 1105 | /* Using dXSARGS would also have dITEM and dSP, |
| 1106 | * which define 2 unused local variables. */ |
| 1107 | dAXMARK; |
| 1108 | PERL_UNUSED_ARG(cv); |
| 1109 | PERL_UNUSED_VAR(mark); |
| 1110 | XSRETURN_UV(PL_rehash_seed); |
| 1111 | } |
| 1112 | |
| 1113 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
| 1114 | { |
| 1115 | dVAR; |
| 1116 | dXSARGS; |
| 1117 | PERL_UNUSED_ARG(cv); |
| 1118 | if (SvROK(ST(0))) { |
| 1119 | const HV * const hv = (const HV *) SvRV(ST(0)); |
| 1120 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
| 1121 | if (HvREHASH(hv)) |
| 1122 | XSRETURN_YES; |
| 1123 | else |
| 1124 | XSRETURN_NO; |
| 1125 | } |
| 1126 | } |
| 1127 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
| 1128 | } |
| 1129 | |
| 1130 | XS(XS_re_is_regexp) |
| 1131 | { |
| 1132 | dVAR; |
| 1133 | dXSARGS; |
| 1134 | PERL_UNUSED_VAR(cv); |
| 1135 | |
| 1136 | if (items != 1) |
| 1137 | croak_xs_usage(cv, "sv"); |
| 1138 | |
| 1139 | SP -= items; |
| 1140 | |
| 1141 | if (SvRXOK(ST(0))) { |
| 1142 | XSRETURN_YES; |
| 1143 | } else { |
| 1144 | XSRETURN_NO; |
| 1145 | } |
| 1146 | } |
| 1147 | |
| 1148 | XS(XS_re_regnames_count) |
| 1149 | { |
| 1150 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1151 | SV * ret; |
| 1152 | dVAR; |
| 1153 | dXSARGS; |
| 1154 | |
| 1155 | if (items != 0) |
| 1156 | croak_xs_usage(cv, ""); |
| 1157 | |
| 1158 | SP -= items; |
| 1159 | |
| 1160 | if (!rx) |
| 1161 | XSRETURN_UNDEF; |
| 1162 | |
| 1163 | ret = CALLREG_NAMED_BUFF_COUNT(rx); |
| 1164 | |
| 1165 | SPAGAIN; |
| 1166 | |
| 1167 | if (ret) { |
| 1168 | mXPUSHs(ret); |
| 1169 | PUTBACK; |
| 1170 | return; |
| 1171 | } else { |
| 1172 | XSRETURN_UNDEF; |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | XS(XS_re_regname) |
| 1177 | { |
| 1178 | dVAR; |
| 1179 | dXSARGS; |
| 1180 | REGEXP * rx; |
| 1181 | U32 flags; |
| 1182 | SV * ret; |
| 1183 | |
| 1184 | if (items < 1 || items > 2) |
| 1185 | croak_xs_usage(cv, "name[, all ]"); |
| 1186 | |
| 1187 | SP -= items; |
| 1188 | |
| 1189 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1190 | |
| 1191 | if (!rx) |
| 1192 | XSRETURN_UNDEF; |
| 1193 | |
| 1194 | if (items == 2 && SvTRUE(ST(1))) { |
| 1195 | flags = RXapif_ALL; |
| 1196 | } else { |
| 1197 | flags = RXapif_ONE; |
| 1198 | } |
| 1199 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
| 1200 | |
| 1201 | if (ret) { |
| 1202 | mXPUSHs(ret); |
| 1203 | XSRETURN(1); |
| 1204 | } |
| 1205 | XSRETURN_UNDEF; |
| 1206 | } |
| 1207 | |
| 1208 | |
| 1209 | XS(XS_re_regnames) |
| 1210 | { |
| 1211 | dVAR; |
| 1212 | dXSARGS; |
| 1213 | REGEXP * rx; |
| 1214 | U32 flags; |
| 1215 | SV *ret; |
| 1216 | AV *av; |
| 1217 | I32 length; |
| 1218 | I32 i; |
| 1219 | SV **entry; |
| 1220 | |
| 1221 | if (items > 1) |
| 1222 | croak_xs_usage(cv, "[all]"); |
| 1223 | |
| 1224 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1225 | |
| 1226 | if (!rx) |
| 1227 | XSRETURN_UNDEF; |
| 1228 | |
| 1229 | if (items == 1 && SvTRUE(ST(0))) { |
| 1230 | flags = RXapif_ALL; |
| 1231 | } else { |
| 1232 | flags = RXapif_ONE; |
| 1233 | } |
| 1234 | |
| 1235 | SP -= items; |
| 1236 | |
| 1237 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
| 1238 | |
| 1239 | SPAGAIN; |
| 1240 | |
| 1241 | SP -= items; |
| 1242 | |
| 1243 | if (!ret) |
| 1244 | XSRETURN_UNDEF; |
| 1245 | |
| 1246 | av = MUTABLE_AV(SvRV(ret)); |
| 1247 | length = av_len(av); |
| 1248 | |
| 1249 | for (i = 0; i <= length; i++) { |
| 1250 | entry = av_fetch(av, i, FALSE); |
| 1251 | |
| 1252 | if (!entry) |
| 1253 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); |
| 1254 | |
| 1255 | mXPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
| 1256 | } |
| 1257 | |
| 1258 | SvREFCNT_dec(ret); |
| 1259 | |
| 1260 | PUTBACK; |
| 1261 | return; |
| 1262 | } |
| 1263 | |
| 1264 | XS(XS_re_regexp_pattern) |
| 1265 | { |
| 1266 | dVAR; |
| 1267 | dXSARGS; |
| 1268 | REGEXP *re; |
| 1269 | |
| 1270 | if (items != 1) |
| 1271 | croak_xs_usage(cv, "sv"); |
| 1272 | |
| 1273 | SP -= items; |
| 1274 | |
| 1275 | /* |
| 1276 | Checks if a reference is a regex or not. If the parameter is |
| 1277 | not a ref, or is not the result of a qr// then returns false |
| 1278 | in scalar context and an empty list in list context. |
| 1279 | Otherwise in list context it returns the pattern and the |
| 1280 | modifiers, in scalar context it returns the pattern just as it |
| 1281 | would if the qr// was stringified normally, regardless as |
| 1282 | to the class of the variable and any strigification overloads |
| 1283 | on the object. |
| 1284 | */ |
| 1285 | |
| 1286 | if ((re = SvRX(ST(0)))) /* assign deliberate */ |
| 1287 | { |
| 1288 | /* Housten, we have a regex! */ |
| 1289 | SV *pattern; |
| 1290 | STRLEN left = 0; |
| 1291 | char reflags[6]; |
| 1292 | |
| 1293 | if ( GIMME_V == G_ARRAY ) { |
| 1294 | /* |
| 1295 | we are in list context so stringify |
| 1296 | the modifiers that apply. We ignore "negative |
| 1297 | modifiers" in this scenario. |
| 1298 | */ |
| 1299 | |
| 1300 | const char *fptr = INT_PAT_MODS; |
| 1301 | char ch; |
| 1302 | U16 match_flags = (U16)((RX_EXTFLAGS(re) & PMf_COMPILETIME) |
| 1303 | >> RXf_PMf_STD_PMMOD_SHIFT); |
| 1304 | |
| 1305 | while((ch = *fptr++)) { |
| 1306 | if(match_flags & 1) { |
| 1307 | reflags[left++] = ch; |
| 1308 | } |
| 1309 | match_flags >>= 1; |
| 1310 | } |
| 1311 | |
| 1312 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
| 1313 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); |
| 1314 | |
| 1315 | /* return the pattern and the modifiers */ |
| 1316 | XPUSHs(pattern); |
| 1317 | XPUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); |
| 1318 | XSRETURN(2); |
| 1319 | } else { |
| 1320 | /* Scalar, so use the string that Perl would return */ |
| 1321 | /* return the pattern in (?msix:..) format */ |
| 1322 | #if PERL_VERSION >= 11 |
| 1323 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
| 1324 | #else |
| 1325 | pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re), |
| 1326 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); |
| 1327 | #endif |
| 1328 | XPUSHs(pattern); |
| 1329 | XSRETURN(1); |
| 1330 | } |
| 1331 | } else { |
| 1332 | /* It ain't a regexp folks */ |
| 1333 | if ( GIMME_V == G_ARRAY ) { |
| 1334 | /* return the empty list */ |
| 1335 | XSRETURN_UNDEF; |
| 1336 | } else { |
| 1337 | /* Because of the (?:..) wrapping involved in a |
| 1338 | stringified pattern it is impossible to get a |
| 1339 | result for a real regexp that would evaluate to |
| 1340 | false. Therefore we can return PL_sv_no to signify |
| 1341 | that the object is not a regex, this means that one |
| 1342 | can say |
| 1343 | |
| 1344 | if (regex($might_be_a_regex) eq '(?:foo)') { } |
| 1345 | |
| 1346 | and not worry about undefined values. |
| 1347 | */ |
| 1348 | XSRETURN_NO; |
| 1349 | } |
| 1350 | } |
| 1351 | /* NOT-REACHED */ |
| 1352 | } |
| 1353 | |
| 1354 | XS(XS_Tie_Hash_NamedCapture_FETCH) |
| 1355 | { |
| 1356 | dVAR; |
| 1357 | dXSARGS; |
| 1358 | REGEXP * rx; |
| 1359 | U32 flags; |
| 1360 | SV * ret; |
| 1361 | |
| 1362 | if (items != 2) |
| 1363 | croak_xs_usage(cv, "$key, $flags"); |
| 1364 | |
| 1365 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1366 | |
| 1367 | if (!rx) |
| 1368 | XSRETURN_UNDEF; |
| 1369 | |
| 1370 | SP -= items; |
| 1371 | |
| 1372 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1373 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(1), flags); |
| 1374 | |
| 1375 | SPAGAIN; |
| 1376 | |
| 1377 | if (ret) { |
| 1378 | mXPUSHs(ret); |
| 1379 | PUTBACK; |
| 1380 | return; |
| 1381 | } |
| 1382 | XSRETURN_UNDEF; |
| 1383 | } |
| 1384 | |
| 1385 | XS(XS_Tie_Hash_NamedCapture_STORE) |
| 1386 | { |
| 1387 | dVAR; |
| 1388 | dXSARGS; |
| 1389 | REGEXP * rx; |
| 1390 | U32 flags; |
| 1391 | |
| 1392 | if (items != 3) |
| 1393 | croak_xs_usage(cv, "$key, $value, $flags"); |
| 1394 | |
| 1395 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1396 | |
| 1397 | if (!rx) { |
| 1398 | if (!PL_localizing) |
| 1399 | Perl_croak(aTHX_ "%s", PL_no_modify); |
| 1400 | else |
| 1401 | XSRETURN_UNDEF; |
| 1402 | } |
| 1403 | |
| 1404 | SP -= items; |
| 1405 | |
| 1406 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1407 | CALLREG_NAMED_BUFF_STORE(rx,ST(1), ST(2), flags); |
| 1408 | } |
| 1409 | |
| 1410 | XS(XS_Tie_Hash_NamedCapture_DELETE) |
| 1411 | { |
| 1412 | dVAR; |
| 1413 | dXSARGS; |
| 1414 | REGEXP * rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1415 | U32 flags; |
| 1416 | |
| 1417 | if (items != 2) |
| 1418 | croak_xs_usage(cv, "$key, $flags"); |
| 1419 | |
| 1420 | if (!rx) |
| 1421 | Perl_croak(aTHX_ "%s", PL_no_modify); |
| 1422 | |
| 1423 | SP -= items; |
| 1424 | |
| 1425 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1426 | CALLREG_NAMED_BUFF_DELETE(rx, ST(1), flags); |
| 1427 | } |
| 1428 | |
| 1429 | XS(XS_Tie_Hash_NamedCapture_CLEAR) |
| 1430 | { |
| 1431 | dVAR; |
| 1432 | dXSARGS; |
| 1433 | REGEXP * rx; |
| 1434 | U32 flags; |
| 1435 | |
| 1436 | if (items != 1) |
| 1437 | croak_xs_usage(cv, "$flags"); |
| 1438 | |
| 1439 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1440 | |
| 1441 | if (!rx) |
| 1442 | Perl_croak(aTHX_ "%s", PL_no_modify); |
| 1443 | |
| 1444 | SP -= items; |
| 1445 | |
| 1446 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1447 | CALLREG_NAMED_BUFF_CLEAR(rx, flags); |
| 1448 | } |
| 1449 | |
| 1450 | XS(XS_Tie_Hash_NamedCapture_EXISTS) |
| 1451 | { |
| 1452 | dVAR; |
| 1453 | dXSARGS; |
| 1454 | REGEXP * rx; |
| 1455 | U32 flags; |
| 1456 | SV * ret; |
| 1457 | |
| 1458 | if (items != 2) |
| 1459 | croak_xs_usage(cv, "$key, $flags"); |
| 1460 | |
| 1461 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1462 | |
| 1463 | if (!rx) |
| 1464 | XSRETURN_UNDEF; |
| 1465 | |
| 1466 | SP -= items; |
| 1467 | |
| 1468 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1469 | ret = CALLREG_NAMED_BUFF_EXISTS(rx, ST(1), flags); |
| 1470 | |
| 1471 | SPAGAIN; |
| 1472 | |
| 1473 | XPUSHs(ret); |
| 1474 | PUTBACK; |
| 1475 | return; |
| 1476 | } |
| 1477 | |
| 1478 | XS(XS_Tie_Hash_NamedCapture_FIRSTK) |
| 1479 | { |
| 1480 | dVAR; |
| 1481 | dXSARGS; |
| 1482 | REGEXP * rx; |
| 1483 | U32 flags; |
| 1484 | SV * ret; |
| 1485 | |
| 1486 | if (items != 1) |
| 1487 | croak_xs_usage(cv, ""); |
| 1488 | |
| 1489 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1490 | |
| 1491 | if (!rx) |
| 1492 | XSRETURN_UNDEF; |
| 1493 | |
| 1494 | SP -= items; |
| 1495 | |
| 1496 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1497 | ret = CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags); |
| 1498 | |
| 1499 | SPAGAIN; |
| 1500 | |
| 1501 | if (ret) { |
| 1502 | mXPUSHs(ret); |
| 1503 | PUTBACK; |
| 1504 | } else { |
| 1505 | XSRETURN_UNDEF; |
| 1506 | } |
| 1507 | |
| 1508 | } |
| 1509 | |
| 1510 | XS(XS_Tie_Hash_NamedCapture_NEXTK) |
| 1511 | { |
| 1512 | dVAR; |
| 1513 | dXSARGS; |
| 1514 | REGEXP * rx; |
| 1515 | U32 flags; |
| 1516 | SV * ret; |
| 1517 | |
| 1518 | if (items != 2) |
| 1519 | croak_xs_usage(cv, "$lastkey"); |
| 1520 | |
| 1521 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1522 | |
| 1523 | if (!rx) |
| 1524 | XSRETURN_UNDEF; |
| 1525 | |
| 1526 | SP -= items; |
| 1527 | |
| 1528 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1529 | ret = CALLREG_NAMED_BUFF_NEXTKEY(rx, ST(1), flags); |
| 1530 | |
| 1531 | SPAGAIN; |
| 1532 | |
| 1533 | if (ret) { |
| 1534 | mXPUSHs(ret); |
| 1535 | } else { |
| 1536 | XSRETURN_UNDEF; |
| 1537 | } |
| 1538 | PUTBACK; |
| 1539 | } |
| 1540 | |
| 1541 | XS(XS_Tie_Hash_NamedCapture_SCALAR) |
| 1542 | { |
| 1543 | dVAR; |
| 1544 | dXSARGS; |
| 1545 | REGEXP * rx; |
| 1546 | U32 flags; |
| 1547 | SV * ret; |
| 1548 | |
| 1549 | if (items != 1) |
| 1550 | croak_xs_usage(cv, ""); |
| 1551 | |
| 1552 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
| 1553 | |
| 1554 | if (!rx) |
| 1555 | XSRETURN_UNDEF; |
| 1556 | |
| 1557 | SP -= items; |
| 1558 | |
| 1559 | flags = (U32)INT2PTR(IV,SvIV(SvRV(MUTABLE_SV(ST(0))))); |
| 1560 | ret = CALLREG_NAMED_BUFF_SCALAR(rx, flags); |
| 1561 | |
| 1562 | SPAGAIN; |
| 1563 | |
| 1564 | if (ret) { |
| 1565 | mXPUSHs(ret); |
| 1566 | PUTBACK; |
| 1567 | return; |
| 1568 | } else { |
| 1569 | XSRETURN_UNDEF; |
| 1570 | } |
| 1571 | } |
| 1572 | |
| 1573 | XS(XS_Tie_Hash_NamedCapture_flags) |
| 1574 | { |
| 1575 | dVAR; |
| 1576 | dXSARGS; |
| 1577 | |
| 1578 | if (items != 0) |
| 1579 | croak_xs_usage(cv, ""); |
| 1580 | |
| 1581 | mXPUSHu(RXapif_ONE); |
| 1582 | mXPUSHu(RXapif_ALL); |
| 1583 | PUTBACK; |
| 1584 | return; |
| 1585 | } |
| 1586 | |
| 1587 | |
| 1588 | /* |
| 1589 | * Local variables: |
| 1590 | * c-indentation-style: bsd |
| 1591 | * c-basic-offset: 4 |
| 1592 | * indent-tabs-mode: t |
| 1593 | * End: |
| 1594 | * |
| 1595 | * ex: set ts=8 sts=4 sw=4 noet: |
| 1596 | */ |