| 1 | /* This file is part of the "version" CPAN distribution. Please avoid |
| 2 | editing it in the perl core. */ |
| 3 | |
| 4 | #ifdef PERL_CORE |
| 5 | # define VXS_CLASS "version" |
| 6 | # define VXSp(name) XS_##name |
| 7 | /* VXSXSDP = XSUB Details Proto */ |
| 8 | # define VXSXSDP(x) x |
| 9 | #else |
| 10 | # define VXS_CLASS "version::vxs" |
| 11 | # define VXSp(name) VXS_##name |
| 12 | /* proto member is unused in version, it is used in CORE by non version xsubs */ |
| 13 | # define VXSXSDP(x) |
| 14 | #endif |
| 15 | |
| 16 | #ifndef XS_INTERNAL |
| 17 | # define XS_INTERNAL(name) static XSPROTO(name) |
| 18 | #endif |
| 19 | |
| 20 | #define VXS(name) XS_INTERNAL(VXSp(name)); XS_INTERNAL(VXSp(name)) |
| 21 | |
| 22 | /* uses PUSHs, so SP must be at start, PUSHs sv on Perl stack, then returns from |
| 23 | xsub; this is a little more machine code/tailcall friendly than mPUSHs(foo); |
| 24 | PUTBACK; return; */ |
| 25 | |
| 26 | #define VXS_RETURN_M_SV(sv) \ |
| 27 | STMT_START { \ |
| 28 | SV * sv_vtc = sv; \ |
| 29 | PUSHs(sv_vtc); \ |
| 30 | PUTBACK; \ |
| 31 | sv_2mortal(sv_vtc); \ |
| 32 | return; \ |
| 33 | } STMT_END |
| 34 | |
| 35 | |
| 36 | #ifdef VXS_XSUB_DETAILS |
| 37 | # ifdef PERL_CORE |
| 38 | {"UNIVERSAL::VERSION", VXSp(universal_version), VXSXSDP(NULL)}, |
| 39 | # endif |
| 40 | {VXS_CLASS "::_VERSION", VXSp(universal_version), VXSXSDP(NULL)}, |
| 41 | {VXS_CLASS "::()", VXSp(version_noop), VXSXSDP(NULL)}, |
| 42 | {VXS_CLASS "::new", VXSp(version_new), VXSXSDP(NULL)}, |
| 43 | {VXS_CLASS "::parse", VXSp(version_new), VXSXSDP(NULL)}, |
| 44 | {VXS_CLASS "::(\"\"", VXSp(version_stringify), VXSXSDP(NULL)}, |
| 45 | {VXS_CLASS "::stringify", VXSp(version_stringify), VXSXSDP(NULL)}, |
| 46 | {VXS_CLASS "::(0+", VXSp(version_numify), VXSXSDP(NULL)}, |
| 47 | {VXS_CLASS "::numify", VXSp(version_numify), VXSXSDP(NULL)}, |
| 48 | {VXS_CLASS "::normal", VXSp(version_normal), VXSXSDP(NULL)}, |
| 49 | {VXS_CLASS "::(cmp", VXSp(version_vcmp), VXSXSDP(NULL)}, |
| 50 | {VXS_CLASS "::(<=>", VXSp(version_vcmp), VXSXSDP(NULL)}, |
| 51 | # ifdef PERL_CORE |
| 52 | {VXS_CLASS "::vcmp", XS_version_vcmp, VXSXSDP(NULL)}, |
| 53 | # else |
| 54 | {VXS_CLASS "::VCMP", VXS_version_vcmp, VXSXSDP(NULL)}, |
| 55 | # endif |
| 56 | {VXS_CLASS "::(bool", VXSp(version_boolean), VXSXSDP(NULL)}, |
| 57 | {VXS_CLASS "::boolean", VXSp(version_boolean), VXSXSDP(NULL)}, |
| 58 | {VXS_CLASS "::(+", VXSp(version_noop), VXSXSDP(NULL)}, |
| 59 | {VXS_CLASS "::(-", VXSp(version_noop), VXSXSDP(NULL)}, |
| 60 | {VXS_CLASS "::(*", VXSp(version_noop), VXSXSDP(NULL)}, |
| 61 | {VXS_CLASS "::(/", VXSp(version_noop), VXSXSDP(NULL)}, |
| 62 | {VXS_CLASS "::(+=", VXSp(version_noop), VXSXSDP(NULL)}, |
| 63 | {VXS_CLASS "::(-=", VXSp(version_noop), VXSXSDP(NULL)}, |
| 64 | {VXS_CLASS "::(*=", VXSp(version_noop), VXSXSDP(NULL)}, |
| 65 | {VXS_CLASS "::(/=", VXSp(version_noop), VXSXSDP(NULL)}, |
| 66 | {VXS_CLASS "::(abs", VXSp(version_noop), VXSXSDP(NULL)}, |
| 67 | {VXS_CLASS "::(nomethod", VXSp(version_noop), VXSXSDP(NULL)}, |
| 68 | {VXS_CLASS "::noop", VXSp(version_noop), VXSXSDP(NULL)}, |
| 69 | {VXS_CLASS "::is_alpha", VXSp(version_is_alpha), VXSXSDP(NULL)}, |
| 70 | {VXS_CLASS "::qv", VXSp(version_qv), VXSXSDP(NULL)}, |
| 71 | {VXS_CLASS "::declare", VXSp(version_qv), VXSXSDP(NULL)}, |
| 72 | {VXS_CLASS "::is_qv", VXSp(version_is_qv), VXSXSDP(NULL)}, |
| 73 | #else |
| 74 | |
| 75 | #ifndef dVAR |
| 76 | # define dVAR |
| 77 | #endif |
| 78 | |
| 79 | #ifdef HvNAME_HEK |
| 80 | typedef HEK HVNAME; |
| 81 | # ifndef HEKf |
| 82 | # define HEKfARG(arg) ((void*)(sv_2mortal(newSVhek(arg)))) |
| 83 | # define HEKf SVf |
| 84 | # endif |
| 85 | #else |
| 86 | typedef char HVNAME; |
| 87 | # define HvNAME_HEK HvNAME_get |
| 88 | # define HEKfARG(arg) arg |
| 89 | # define HEKf "s" |
| 90 | #endif |
| 91 | |
| 92 | VXS(universal_version) |
| 93 | { |
| 94 | dXSARGS; |
| 95 | HV *pkg; |
| 96 | GV **gvp; |
| 97 | GV *gv; |
| 98 | SV *sv; |
| 99 | const char *undef; |
| 100 | PERL_UNUSED_ARG(cv); |
| 101 | |
| 102 | if (items < 1) |
| 103 | Perl_croak(aTHX_ "Usage: UNIVERSAL::VERSION(sv, ...)"); |
| 104 | |
| 105 | sv = ST(0); |
| 106 | |
| 107 | if (SvROK(sv)) { |
| 108 | sv = (SV*)SvRV(sv); |
| 109 | if (!SvOBJECT(sv)) |
| 110 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
| 111 | pkg = SvSTASH(sv); |
| 112 | } |
| 113 | else { |
| 114 | pkg = gv_stashsv(sv, FALSE); |
| 115 | } |
| 116 | |
| 117 | gvp = pkg ? (GV**)hv_fetchs(pkg,"VERSION",FALSE) : (GV**)NULL; |
| 118 | |
| 119 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
| 120 | sv = sv_mortalcopy(sv); |
| 121 | if ( ! ISA_VERSION_OBJ(sv) ) |
| 122 | UPG_VERSION(sv, FALSE); |
| 123 | undef = NULL; |
| 124 | } |
| 125 | else { |
| 126 | sv = &PL_sv_undef; |
| 127 | undef = "(undef)"; |
| 128 | } |
| 129 | |
| 130 | if (items > 1) { |
| 131 | SV *req = ST(1); |
| 132 | |
| 133 | if (undef) { |
| 134 | if (pkg) { |
| 135 | const HVNAME* const name = HvNAME_HEK(pkg); |
| 136 | #if PERL_VERSION == 5 |
| 137 | Perl_croak(aTHX_ "%s version %s required--this is only version ", |
| 138 | name, SvPVx_nolen_const(req)); |
| 139 | #else |
| 140 | Perl_croak(aTHX_ |
| 141 | "%" HEKf " does not define $%"HEKf |
| 142 | "::VERSION--version check failed", |
| 143 | HEKfARG(name), HEKfARG(name)); |
| 144 | #endif |
| 145 | } |
| 146 | else { |
| 147 | #if PERL_VERSION >= 8 |
| 148 | Perl_croak(aTHX_ |
| 149 | "%" SVf " defines neither package nor VERSION--" |
| 150 | "version check failed", |
| 151 | (void*)(ST(0)) ); |
| 152 | #else |
| 153 | Perl_croak(aTHX_ "%s does not define $%s::VERSION--version check failed", |
| 154 | SvPVx_nolen_const(ST(0)), |
| 155 | SvPVx_nolen_const(ST(0)) ); |
| 156 | #endif |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | if ( ! ISA_VERSION_OBJ(req) ) { |
| 161 | /* req may very well be R/O, so create a new object */ |
| 162 | req = sv_2mortal( NEW_VERSION(req) ); |
| 163 | } |
| 164 | |
| 165 | if ( VCMP( req, sv ) > 0 ) { |
| 166 | if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) { |
| 167 | req = VNORMAL(req); |
| 168 | sv = VNORMAL(sv); |
| 169 | } |
| 170 | else { |
| 171 | req = VSTRINGIFY(req); |
| 172 | sv = VSTRINGIFY(sv); |
| 173 | } |
| 174 | Perl_croak(aTHX_ "%" HEKf " version %" SVf " required--" |
| 175 | "this is only version %" SVf, HEKfARG(HvNAME_HEK(pkg)), |
| 176 | SVfARG(sv_2mortal(req)), |
| 177 | SVfARG(sv_2mortal(sv))); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | /* if the package's $VERSION is not undef, it is upgraded to be a version object */ |
| 182 | if (ISA_VERSION_OBJ(sv)) { |
| 183 | ST(0) = sv_2mortal(VSTRINGIFY(sv)); |
| 184 | } else { |
| 185 | ST(0) = sv; |
| 186 | } |
| 187 | |
| 188 | XSRETURN(1); |
| 189 | } |
| 190 | |
| 191 | VXS(version_new) |
| 192 | { |
| 193 | dXSARGS; |
| 194 | SV *vs; |
| 195 | SV *rv; |
| 196 | const char * classname = ""; |
| 197 | STRLEN len; |
| 198 | U32 flags = 0; |
| 199 | SV * svarg0 = NULL; |
| 200 | PERL_UNUSED_VAR(cv); |
| 201 | |
| 202 | SP -= items; |
| 203 | |
| 204 | switch((U32)items) { |
| 205 | case 3: { |
| 206 | SV * svarg2; |
| 207 | vs = sv_newmortal(); |
| 208 | svarg2 = ST(2); |
| 209 | #if PERL_VERSION == 5 |
| 210 | sv_setpvf(vs,"v%s",SvPV_nolen_const(svarg2)); |
| 211 | #else |
| 212 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(svarg2)); |
| 213 | #endif |
| 214 | break; |
| 215 | } |
| 216 | case 2: |
| 217 | vs = ST(1); |
| 218 | /* Just in case this is something like a tied hash */ |
| 219 | SvGETMAGIC(vs); |
| 220 | if(SvOK(vs)) |
| 221 | break; |
| 222 | /* drop through */ |
| 223 | case 1: |
| 224 | /* no param or explicit undef */ |
| 225 | /* create empty object */ |
| 226 | vs = sv_newmortal(); |
| 227 | sv_setpvs(vs,"undef"); |
| 228 | break; |
| 229 | default: |
| 230 | case 0: |
| 231 | Perl_croak_nocontext("Usage: version::new(class, version)"); |
| 232 | } |
| 233 | |
| 234 | svarg0 = ST(0); |
| 235 | if ( sv_isobject(svarg0) ) { |
| 236 | /* get the class if called as an object method */ |
| 237 | const HV * stash = SvSTASH(SvRV(svarg0)); |
| 238 | classname = HvNAME_get(stash); |
| 239 | len = HvNAMELEN_get(stash); |
| 240 | #ifdef HvNAMEUTF8 |
| 241 | flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0; |
| 242 | #endif |
| 243 | } |
| 244 | else { |
| 245 | classname = SvPV_nomg(svarg0, len); |
| 246 | flags = SvUTF8(svarg0); |
| 247 | } |
| 248 | |
| 249 | rv = NEW_VERSION(vs); |
| 250 | if ( len != sizeof(VXS_CLASS)-1 |
| 251 | || strcmp(classname,VXS_CLASS) != 0 ) /* inherited new() */ |
| 252 | #if PERL_VERSION == 5 |
| 253 | sv_bless(rv, gv_stashpv((char *)classname, GV_ADD)); |
| 254 | #else |
| 255 | sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags)); |
| 256 | #endif |
| 257 | |
| 258 | VXS_RETURN_M_SV(rv); |
| 259 | } |
| 260 | |
| 261 | #define VTYPECHECK(var, val, varname) \ |
| 262 | STMT_START { \ |
| 263 | SV * sv_vtc = val; \ |
| 264 | if (ISA_VERSION_OBJ(sv_vtc)) { \ |
| 265 | (var) = SvRV(sv_vtc); \ |
| 266 | } \ |
| 267 | else \ |
| 268 | Perl_croak_nocontext(varname " is not of type version"); \ |
| 269 | } STMT_END |
| 270 | |
| 271 | VXS(version_stringify) |
| 272 | { |
| 273 | dXSARGS; |
| 274 | if (items < 1) |
| 275 | croak_xs_usage(cv, "lobj, ..."); |
| 276 | SP -= items; |
| 277 | { |
| 278 | SV * lobj; |
| 279 | VTYPECHECK(lobj, ST(0), "lobj"); |
| 280 | |
| 281 | VXS_RETURN_M_SV(VSTRINGIFY(lobj)); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | VXS(version_numify) |
| 286 | { |
| 287 | dXSARGS; |
| 288 | if (items < 1) |
| 289 | croak_xs_usage(cv, "lobj, ..."); |
| 290 | SP -= items; |
| 291 | { |
| 292 | SV * lobj; |
| 293 | VTYPECHECK(lobj, ST(0), "lobj"); |
| 294 | VXS_RETURN_M_SV(VNUMIFY(lobj)); |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | VXS(version_normal) |
| 299 | { |
| 300 | dXSARGS; |
| 301 | if (items != 1) |
| 302 | croak_xs_usage(cv, "ver"); |
| 303 | SP -= items; |
| 304 | { |
| 305 | SV * ver; |
| 306 | VTYPECHECK(ver, ST(0), "ver"); |
| 307 | |
| 308 | VXS_RETURN_M_SV(VNORMAL(ver)); |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | VXS(version_vcmp) |
| 313 | { |
| 314 | dXSARGS; |
| 315 | if (items < 1) |
| 316 | croak_xs_usage(cv, "lobj, ..."); |
| 317 | SP -= items; |
| 318 | { |
| 319 | SV * lobj; |
| 320 | VTYPECHECK(lobj, ST(0), "lobj"); |
| 321 | { |
| 322 | SV *rs; |
| 323 | SV *rvs; |
| 324 | SV * robj = ST(1); |
| 325 | const IV swap = (IV)SvIV(ST(2)); |
| 326 | |
| 327 | if ( !ISA_VERSION_OBJ(robj) ) |
| 328 | { |
| 329 | robj = sv_2mortal(NEW_VERSION(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP))); |
| 330 | } |
| 331 | rvs = SvRV(robj); |
| 332 | |
| 333 | if ( swap ) |
| 334 | { |
| 335 | rs = newSViv(VCMP(rvs,lobj)); |
| 336 | } |
| 337 | else |
| 338 | { |
| 339 | rs = newSViv(VCMP(lobj,rvs)); |
| 340 | } |
| 341 | |
| 342 | VXS_RETURN_M_SV(rs); |
| 343 | } |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | VXS(version_boolean) |
| 348 | { |
| 349 | dXSARGS; |
| 350 | SV *lobj; |
| 351 | if (items < 1) |
| 352 | croak_xs_usage(cv, "lobj, ..."); |
| 353 | SP -= items; |
| 354 | VTYPECHECK(lobj, ST(0), "lobj"); |
| 355 | { |
| 356 | SV * const rs = |
| 357 | newSViv( VCMP(lobj, |
| 358 | sv_2mortal(NEW_VERSION( |
| 359 | sv_2mortal(newSVpvs("0")) |
| 360 | )) |
| 361 | ) |
| 362 | ); |
| 363 | VXS_RETURN_M_SV(rs); |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | VXS(version_noop) |
| 368 | { |
| 369 | dXSARGS; |
| 370 | if (items < 1) |
| 371 | croak_xs_usage(cv, "lobj, ..."); |
| 372 | if (ISA_VERSION_OBJ(ST(0))) |
| 373 | Perl_croak(aTHX_ "operation not supported with version object"); |
| 374 | else |
| 375 | Perl_croak(aTHX_ "lobj is not of type version"); |
| 376 | XSRETURN_EMPTY; |
| 377 | } |
| 378 | |
| 379 | static |
| 380 | void |
| 381 | S_version_check_key(pTHX_ CV * cv, const char * key, int keylen) |
| 382 | { |
| 383 | dXSARGS; |
| 384 | if (items != 1) |
| 385 | croak_xs_usage(cv, "lobj"); |
| 386 | { |
| 387 | SV *lobj = POPs; |
| 388 | SV *ret; |
| 389 | VTYPECHECK(lobj, lobj, "lobj"); |
| 390 | if ( hv_exists(MUTABLE_HV(lobj), key, keylen ) ) |
| 391 | ret = &PL_sv_yes; |
| 392 | else |
| 393 | ret = &PL_sv_no; |
| 394 | PUSHs(ret); |
| 395 | PUTBACK; |
| 396 | return; |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | VXS(version_is_alpha) |
| 401 | { |
| 402 | S_version_check_key(aTHX_ cv, "alpha", 5); |
| 403 | } |
| 404 | |
| 405 | VXS(version_qv) |
| 406 | { |
| 407 | dXSARGS; |
| 408 | PERL_UNUSED_ARG(cv); |
| 409 | SP -= items; |
| 410 | { |
| 411 | SV * ver = ST(0); |
| 412 | SV * sv0 = ver; |
| 413 | SV * rv; |
| 414 | STRLEN len = 0; |
| 415 | const char * classname = ""; |
| 416 | U32 flags = 0; |
| 417 | if ( items == 2 ) { |
| 418 | SV * sv1 = ST(1); |
| 419 | SvGETMAGIC(sv1); |
| 420 | if (SvOK(sv1)) { |
| 421 | ver = sv1; |
| 422 | } |
| 423 | else { |
| 424 | Perl_croak(aTHX_ "Invalid version format (version required)"); |
| 425 | } |
| 426 | if ( sv_isobject(sv0) ) { /* class called as an object method */ |
| 427 | const HV * stash = SvSTASH(SvRV(sv0)); |
| 428 | classname = HvNAME_get(stash); |
| 429 | len = HvNAMELEN_get(stash); |
| 430 | #ifdef HvNAMEUTF8 |
| 431 | flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0; |
| 432 | #endif |
| 433 | } |
| 434 | else { |
| 435 | classname = SvPV(sv0, len); |
| 436 | flags = SvUTF8(sv0); |
| 437 | } |
| 438 | } |
| 439 | if ( !SvVOK(ver) ) { /* not already a v-string */ |
| 440 | rv = sv_newmortal(); |
| 441 | SvSetSV_nosteal(rv,ver); /* make a duplicate */ |
| 442 | UPG_VERSION(rv, TRUE); |
| 443 | } else { |
| 444 | rv = sv_2mortal(NEW_VERSION(ver)); |
| 445 | } |
| 446 | if ( items == 2 && (len != 7 |
| 447 | || strcmp(classname,"version")) ) { /* inherited new() */ |
| 448 | #if PERL_VERSION == 5 |
| 449 | sv_bless(rv, gv_stashpv((char *)classname, GV_ADD)); |
| 450 | #else |
| 451 | sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags)); |
| 452 | #endif |
| 453 | } |
| 454 | PUSHs(rv); |
| 455 | } |
| 456 | PUTBACK; |
| 457 | return; |
| 458 | } |
| 459 | |
| 460 | |
| 461 | VXS(version_is_qv) |
| 462 | { |
| 463 | S_version_check_key(aTHX_ cv, "qv", 2); |
| 464 | } |
| 465 | |
| 466 | #endif |