Commit | Line | Data |
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d6376244 JH |
1 | /* universal.c |
2 | * | |
b5f8cc5c | 3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
1129b882 | 4 | * 2005, 2006, 2007, 2008 by Larry Wall and others |
d6376244 JH |
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 | ||
d31a8517 | 11 | /* |
4ac71550 TC |
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"] | |
d31a8517 AT |
17 | */ |
18 | ||
166f8a29 DM |
19 | /* This file contains the code that implements the functions in Perl's |
20 | * UNIVERSAL package, such as UNIVERSAL->can(). | |
192b9cd1 AB |
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 | |
486ec47a | 24 | * clever to move them to separate XS files which would then be pulled |
192b9cd1 | 25 | * in by some to-be-written build process. |
166f8a29 DM |
26 | */ |
27 | ||
6d4a7be2 | 28 | #include "EXTERN.h" |
864dbfa3 | 29 | #define PERL_IN_UNIVERSAL_C |
6d4a7be2 | 30 | #include "perl.h" |
6d4a7be2 | 31 | |
39f7a870 JH |
32 | #ifdef USE_PERLIO |
33 | #include "perliol.h" /* For the PERLIO_F_XXX */ | |
34 | #endif | |
35 | ||
6d4a7be2 | 36 | /* |
37 | * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com> | |
38 | * The main guts of traverse_isa was actually copied from gv_fetchmeth | |
39 | */ | |
40 | ||
a9ec700e | 41 | STATIC bool |
c7abbf64 | 42 | S_isa_lookup(pTHX_ HV *stash, const char * const name, STRLEN len, U32 flags) |
6d4a7be2 | 43 | { |
97aff369 | 44 | dVAR; |
a49ba3fc | 45 | const struct mro_meta *const meta = HvMROMETA(stash); |
4340b386 | 46 | HV *isa = meta->isa; |
a49ba3fc | 47 | const HV *our_stash; |
6d4a7be2 | 48 | |
7918f24d NC |
49 | PERL_ARGS_ASSERT_ISA_LOOKUP; |
50 | ||
4340b386 FC |
51 | if (!isa) { |
52 | (void)mro_get_linear_isa(stash); | |
53 | isa = meta->isa; | |
54 | } | |
55 | ||
c7abbf64 | 56 | if (hv_common(isa, NULL, name, len, ( flags & SVf_UTF8 ? HVhek_UTF8 : 0), |
a49ba3fc NC |
57 | HV_FETCH_ISEXISTS, NULL, 0)) { |
58 | /* Direct name lookup worked. */ | |
a9ec700e | 59 | return TRUE; |
a49ba3fc | 60 | } |
6d4a7be2 | 61 | |
a49ba3fc | 62 | /* A stash/class can go by many names (ie. User == main::User), so |
81a5123c FC |
63 | we use the HvENAME in the stash itself, which is canonical, falling |
64 | back to HvNAME if necessary. */ | |
c7abbf64 | 65 | our_stash = gv_stashpvn(name, len, flags); |
a49ba3fc NC |
66 | |
67 | if (our_stash) { | |
81a5123c FC |
68 | HEK *canon_name = HvENAME_HEK(our_stash); |
69 | if (!canon_name) canon_name = HvNAME_HEK(our_stash); | |
a1d407e8 | 70 | |
a49ba3fc NC |
71 | if (hv_common(isa, NULL, HEK_KEY(canon_name), HEK_LEN(canon_name), |
72 | HEK_FLAGS(canon_name), | |
73 | HV_FETCH_ISEXISTS, NULL, HEK_HASH(canon_name))) { | |
e1a479c5 | 74 | return TRUE; |
a49ba3fc | 75 | } |
6d4a7be2 | 76 | } |
77 | ||
a9ec700e | 78 | return FALSE; |
6d4a7be2 | 79 | } |
80 | ||
954c1994 | 81 | /* |
ccfc67b7 JH |
82 | =head1 SV Manipulation Functions |
83 | ||
c7abbf64 | 84 | =for apidoc sv_derived_from_pvn |
954c1994 | 85 | |
6885da0e | 86 | Returns a boolean indicating whether the SV is derived from the specified class |
87 | I<at the C level>. To check derivation at the Perl level, call C<isa()> as a | |
88 | normal Perl method. | |
954c1994 | 89 | |
c7abbf64 BF |
90 | Currently, the only significant value for C<flags> is SVf_UTF8. |
91 | ||
92 | =cut | |
93 | ||
94 | =for apidoc sv_derived_from_sv | |
95 | ||
96 | Exactly like L</sv_derived_from_pvn>, but takes the name string in the form | |
97 | of an SV instead of a string/length pair. | |
98 | ||
99 | =cut | |
100 | ||
101 | */ | |
102 | ||
103 | bool | |
104 | Perl_sv_derived_from_sv(pTHX_ SV *sv, SV *namesv, U32 flags) | |
105 | { | |
106 | char *namepv; | |
107 | STRLEN namelen; | |
108 | PERL_ARGS_ASSERT_SV_DERIVED_FROM_SV; | |
109 | namepv = SvPV(namesv, namelen); | |
110 | if (SvUTF8(namesv)) | |
111 | flags |= SVf_UTF8; | |
112 | return sv_derived_from_pvn(sv, namepv, namelen, flags); | |
113 | } | |
114 | ||
115 | /* | |
116 | =for apidoc sv_derived_from | |
117 | ||
118 | Exactly like L</sv_derived_from_pv>, but doesn't take a C<flags> parameter. | |
119 | ||
954c1994 GS |
120 | =cut |
121 | */ | |
122 | ||
55497cff | 123 | bool |
15f169a1 | 124 | Perl_sv_derived_from(pTHX_ SV *sv, const char *const name) |
55497cff | 125 | { |
c7abbf64 BF |
126 | PERL_ARGS_ASSERT_SV_DERIVED_FROM; |
127 | return sv_derived_from_pvn(sv, name, strlen(name), 0); | |
128 | } | |
129 | ||
130 | /* | |
131 | =for apidoc sv_derived_from_pv | |
132 | ||
133 | Exactly like L</sv_derived_from_pvn>, but takes a nul-terminated string | |
134 | instead of a string/length pair. | |
135 | ||
136 | =cut | |
137 | */ | |
138 | ||
139 | ||
140 | bool | |
141 | Perl_sv_derived_from_pv(pTHX_ SV *sv, const char *const name, U32 flags) | |
142 | { | |
143 | PERL_ARGS_ASSERT_SV_DERIVED_FROM_PV; | |
144 | return sv_derived_from_pvn(sv, name, strlen(name), flags); | |
145 | } | |
146 | ||
147 | bool | |
148 | Perl_sv_derived_from_pvn(pTHX_ SV *sv, const char *const name, const STRLEN len, U32 flags) | |
149 | { | |
97aff369 | 150 | dVAR; |
0b6f4f5c | 151 | HV *stash; |
46e4b22b | 152 | |
c7abbf64 | 153 | PERL_ARGS_ASSERT_SV_DERIVED_FROM_PVN; |
7918f24d | 154 | |
5b295bef | 155 | SvGETMAGIC(sv); |
55497cff | 156 | |
bff39573 | 157 | if (SvROK(sv)) { |
0b6f4f5c | 158 | const char *type; |
55497cff | 159 | sv = SvRV(sv); |
160 | type = sv_reftype(sv,0); | |
0b6f4f5c AL |
161 | if (type && strEQ(type,name)) |
162 | return TRUE; | |
163 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; | |
55497cff | 164 | } |
165 | else { | |
da51bb9b | 166 | stash = gv_stashsv(sv, 0); |
61c2a935 | 167 | if (!stash) |
88010bae | 168 | stash = gv_stashpvs("UNIVERSAL", 0); |
55497cff | 169 | } |
46e4b22b | 170 | |
c7abbf64 | 171 | return stash ? isa_lookup(stash, name, len, flags) : FALSE; |
55497cff | 172 | } |
173 | ||
cbc021f9 | 174 | /* |
d20c2c29 | 175 | =for apidoc sv_does_sv |
cbc021f9 | 176 | |
177 | Returns a boolean indicating whether the SV performs a specific, named role. | |
178 | The SV can be a Perl object or the name of a Perl class. | |
179 | ||
180 | =cut | |
181 | */ | |
182 | ||
1b026014 NIS |
183 | #include "XSUB.h" |
184 | ||
cbc021f9 | 185 | bool |
f778bcfd | 186 | Perl_sv_does_sv(pTHX_ SV *sv, SV *namesv, U32 flags) |
cbc021f9 | 187 | { |
f778bcfd | 188 | SV *classname; |
cbc021f9 | 189 | bool does_it; |
59e7186f | 190 | SV *methodname; |
cbc021f9 | 191 | dSP; |
7918f24d | 192 | |
f778bcfd BF |
193 | PERL_ARGS_ASSERT_SV_DOES_SV; |
194 | PERL_UNUSED_ARG(flags); | |
7918f24d | 195 | |
cbc021f9 | 196 | ENTER; |
197 | SAVETMPS; | |
198 | ||
199 | SvGETMAGIC(sv); | |
200 | ||
d96ab1b5 | 201 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) { |
7ce46f2a | 202 | LEAVE; |
cbc021f9 | 203 | return FALSE; |
7ce46f2a | 204 | } |
cbc021f9 | 205 | |
206 | if (sv_isobject(sv)) { | |
f778bcfd | 207 | classname = sv_ref(NULL,SvRV(sv),TRUE); |
cbc021f9 | 208 | } else { |
f778bcfd | 209 | classname = sv; |
cbc021f9 | 210 | } |
211 | ||
f778bcfd | 212 | if (sv_eq(classname, namesv)) { |
7ce46f2a | 213 | LEAVE; |
cbc021f9 | 214 | return TRUE; |
7ce46f2a | 215 | } |
cbc021f9 | 216 | |
217 | PUSHMARK(SP); | |
f778bcfd BF |
218 | EXTEND(SP, 2); |
219 | PUSHs(sv); | |
220 | PUSHs(namesv); | |
cbc021f9 | 221 | PUTBACK; |
222 | ||
84bafc02 | 223 | methodname = newSVpvs_flags("isa", SVs_TEMP); |
59e7186f RGS |
224 | /* ugly hack: use the SvSCREAM flag so S_method_common |
225 | * can figure out we're calling DOES() and not isa(), | |
226 | * and report eventual errors correctly. --rgs */ | |
227 | SvSCREAM_on(methodname); | |
228 | call_sv(methodname, G_SCALAR | G_METHOD); | |
cbc021f9 | 229 | SPAGAIN; |
230 | ||
231 | does_it = SvTRUE( TOPs ); | |
232 | FREETMPS; | |
233 | LEAVE; | |
234 | ||
235 | return does_it; | |
236 | } | |
237 | ||
afa74d42 | 238 | /* |
f778bcfd BF |
239 | =for apidoc sv_does |
240 | ||
d20c2c29 | 241 | Like L</sv_does_pv>, but doesn't take a C<flags> parameter. |
f778bcfd BF |
242 | |
243 | =cut | |
244 | */ | |
245 | ||
246 | bool | |
247 | Perl_sv_does(pTHX_ SV *sv, const char *const name) | |
248 | { | |
249 | PERL_ARGS_ASSERT_SV_DOES; | |
250 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP), 0); | |
251 | } | |
252 | ||
253 | /* | |
254 | =for apidoc sv_does_pv | |
255 | ||
7d892b8c | 256 | Like L</sv_does_sv>, but takes a nul-terminated string instead of an SV. |
f778bcfd BF |
257 | |
258 | =cut | |
259 | */ | |
260 | ||
261 | ||
262 | bool | |
263 | Perl_sv_does_pv(pTHX_ SV *sv, const char *const name, U32 flags) | |
264 | { | |
265 | PERL_ARGS_ASSERT_SV_DOES_PV; | |
266 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP | flags), flags); | |
267 | } | |
268 | ||
7d892b8c FC |
269 | /* |
270 | =for apidoc sv_does_pvn | |
271 | ||
272 | Like L</sv_does_sv>, but takes a string/length pair instead of an SV. | |
273 | ||
274 | =cut | |
275 | */ | |
276 | ||
f778bcfd BF |
277 | bool |
278 | Perl_sv_does_pvn(pTHX_ SV *sv, const char *const name, const STRLEN len, U32 flags) | |
279 | { | |
280 | PERL_ARGS_ASSERT_SV_DOES_PVN; | |
281 | ||
282 | return sv_does_sv(sv, newSVpvn_flags(name, len, flags | SVs_TEMP), flags); | |
283 | } | |
284 | ||
285 | /* | |
afa74d42 NC |
286 | =for apidoc croak_xs_usage |
287 | ||
288 | A specialised variant of C<croak()> for emitting the usage message for xsubs | |
289 | ||
290 | croak_xs_usage(cv, "eee_yow"); | |
291 | ||
292 | works out the package name and subroutine name from C<cv>, and then calls | |
293 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: | |
294 | ||
58cb15b3 | 295 | Perl_croak(aTHX_ "Usage: %"SVf"::%"SVf"(%s)", "ouch" "awk", "eee_yow"); |
afa74d42 NC |
296 | |
297 | =cut | |
298 | */ | |
299 | ||
300 | void | |
cb077ed2 | 301 | Perl_croak_xs_usage(const CV *const cv, const char *const params) |
afa74d42 NC |
302 | { |
303 | const GV *const gv = CvGV(cv); | |
304 | ||
305 | PERL_ARGS_ASSERT_CROAK_XS_USAGE; | |
306 | ||
307 | if (gv) { | |
afa74d42 | 308 | const HV *const stash = GvSTASH(gv); |
afa74d42 | 309 | |
58cb15b3 | 310 | if (HvNAME_get(stash)) |
cb077ed2 | 311 | Perl_croak_nocontext("Usage: %"HEKf"::%"HEKf"(%s)", |
d0c0e7dd FC |
312 | HEKfARG(HvNAME_HEK(stash)), |
313 | HEKfARG(GvNAME_HEK(gv)), | |
58cb15b3 | 314 | params); |
afa74d42 | 315 | else |
cb077ed2 | 316 | Perl_croak_nocontext("Usage: %"HEKf"(%s)", |
d0c0e7dd | 317 | HEKfARG(GvNAME_HEK(gv)), params); |
afa74d42 NC |
318 | } else { |
319 | /* Pants. I don't think that it should be possible to get here. */ | |
cb077ed2 | 320 | Perl_croak_nocontext("Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params); |
afa74d42 NC |
321 | } |
322 | } | |
55497cff | 323 | |
6d4a7be2 | 324 | XS(XS_UNIVERSAL_isa) |
325 | { | |
97aff369 | 326 | dVAR; |
6d4a7be2 | 327 | dXSARGS; |
6d4a7be2 | 328 | |
329 | if (items != 2) | |
afa74d42 | 330 | croak_xs_usage(cv, "reference, kind"); |
c4420975 AL |
331 | else { |
332 | SV * const sv = ST(0); | |
6d4a7be2 | 333 | |
c4420975 | 334 | SvGETMAGIC(sv); |
d3f7f2b2 | 335 | |
d96ab1b5 | 336 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) |
c4420975 | 337 | XSRETURN_UNDEF; |
f8f70380 | 338 | |
c7abbf64 | 339 | ST(0) = boolSV(sv_derived_from_sv(sv, ST(1), 0)); |
c4420975 AL |
340 | XSRETURN(1); |
341 | } | |
6d4a7be2 | 342 | } |
343 | ||
6d4a7be2 | 344 | XS(XS_UNIVERSAL_can) |
345 | { | |
97aff369 | 346 | dVAR; |
6d4a7be2 | 347 | dXSARGS; |
348 | SV *sv; | |
6d4a7be2 | 349 | SV *rv; |
6f08146e | 350 | HV *pkg = NULL; |
2bde9ae6 | 351 | GV *iogv; |
6d4a7be2 | 352 | |
353 | if (items != 2) | |
afa74d42 | 354 | croak_xs_usage(cv, "object-ref, method"); |
6d4a7be2 | 355 | |
356 | sv = ST(0); | |
f8f70380 | 357 | |
5b295bef | 358 | SvGETMAGIC(sv); |
d3f7f2b2 | 359 | |
4178f891 FC |
360 | /* Reject undef and empty string. Note that the string form takes |
361 | precedence here over the numeric form, as (!1)->foo treats the | |
362 | invocant as the empty string, though it is a dualvar. */ | |
363 | if (!SvOK(sv) || (SvPOK(sv) && !SvCUR(sv))) | |
f8f70380 GS |
364 | XSRETURN_UNDEF; |
365 | ||
3280af22 | 366 | rv = &PL_sv_undef; |
6d4a7be2 | 367 | |
46e4b22b | 368 | if (SvROK(sv)) { |
daba3364 | 369 | sv = MUTABLE_SV(SvRV(sv)); |
46e4b22b | 370 | if (SvOBJECT(sv)) |
6f08146e | 371 | pkg = SvSTASH(sv); |
4178f891 FC |
372 | else if (isGV_with_GP(sv) && GvIO(sv)) |
373 | pkg = SvSTASH(GvIO(sv)); | |
6f08146e | 374 | } |
4178f891 FC |
375 | else if (isGV_with_GP(sv) && GvIO(sv)) |
376 | pkg = SvSTASH(GvIO(sv)); | |
2bde9ae6 FC |
377 | else if ((iogv = gv_fetchsv_nomg(sv, 0, SVt_PVIO)) && GvIO(iogv)) |
378 | pkg = SvSTASH(GvIO(iogv)); | |
6f08146e | 379 | else { |
da51bb9b | 380 | pkg = gv_stashsv(sv, 0); |
68b40612 JL |
381 | if (!pkg) |
382 | pkg = gv_stashpv("UNIVERSAL", 0); | |
6f08146e NIS |
383 | } |
384 | ||
385 | if (pkg) { | |
a00b390b | 386 | GV * const gv = gv_fetchmethod_sv_flags(pkg, ST(1), 0); |
dc848c6f | 387 | if (gv && isGV(gv)) |
daba3364 | 388 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
6d4a7be2 | 389 | } |
390 | ||
391 | ST(0) = rv; | |
392 | XSRETURN(1); | |
393 | } | |
394 | ||
cbc021f9 | 395 | XS(XS_UNIVERSAL_DOES) |
396 | { | |
397 | dVAR; | |
398 | dXSARGS; | |
58c0efa5 | 399 | PERL_UNUSED_ARG(cv); |
cbc021f9 | 400 | |
401 | if (items != 2) | |
46404226 | 402 | Perl_croak(aTHX_ "Usage: invocant->DOES(kind)"); |
cbc021f9 | 403 | else { |
404 | SV * const sv = ST(0); | |
f778bcfd | 405 | if (sv_does_sv( sv, ST(1), 0 )) |
cbc021f9 | 406 | XSRETURN_YES; |
407 | ||
408 | XSRETURN_NO; | |
409 | } | |
410 | } | |
411 | ||
6d4a7be2 | 412 | XS(XS_UNIVERSAL_VERSION) |
413 | { | |
97aff369 | 414 | dVAR; |
6d4a7be2 | 415 | dXSARGS; |
416 | HV *pkg; | |
417 | GV **gvp; | |
418 | GV *gv; | |
419 | SV *sv; | |
e1ec3a88 | 420 | const char *undef; |
58c0efa5 | 421 | PERL_UNUSED_ARG(cv); |
6d4a7be2 | 422 | |
1571675a | 423 | if (SvROK(ST(0))) { |
daba3364 | 424 | sv = MUTABLE_SV(SvRV(ST(0))); |
1571675a | 425 | if (!SvOBJECT(sv)) |
cea2e8a9 | 426 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 427 | pkg = SvSTASH(sv); |
428 | } | |
429 | else { | |
da51bb9b | 430 | pkg = gv_stashsv(ST(0), 0); |
6d4a7be2 | 431 | } |
432 | ||
4608196e | 433 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
6d4a7be2 | 434 | |
0008872a | 435 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
a97f6d14 JP |
436 | SV * const nsv = sv_newmortal(); |
437 | sv_setsv(nsv, sv); | |
438 | sv = nsv; | |
573a19fb | 439 | if ( !sv_isobject(sv) || !sv_derived_from(sv, "version")) |
a97f6d14 JP |
440 | upg_version(sv, FALSE); |
441 | ||
c445ea15 | 442 | undef = NULL; |
6d4a7be2 | 443 | } |
444 | else { | |
a97f6d14 | 445 | sv = &PL_sv_undef; |
6d4a7be2 | 446 | undef = "(undef)"; |
447 | } | |
448 | ||
1571675a | 449 | if (items > 1) { |
1571675a GS |
450 | SV *req = ST(1); |
451 | ||
62658f4d | 452 | if (undef) { |
bfcb3514 | 453 | if (pkg) { |
d0c0e7dd | 454 | const HEK * const name = HvNAME_HEK(pkg); |
a3b680e6 | 455 | Perl_croak(aTHX_ |
d0c0e7dd FC |
456 | "%"HEKf" does not define $%"HEKf |
457 | "::VERSION--version check failed", | |
458 | HEKfARG(name), HEKfARG(name)); | |
bfcb3514 | 459 | } else { |
a3b680e6 | 460 | Perl_croak(aTHX_ |
ed1db70e BF |
461 | "%"SVf" defines neither package nor VERSION--version check failed", |
462 | SVfARG(ST(0)) ); | |
62658f4d PM |
463 | } |
464 | } | |
ad63d80f | 465 | |
573a19fb | 466 | if ( !sv_isobject(req) || !sv_derived_from(req, "version")) { |
137d6fc0 | 467 | /* req may very well be R/O, so create a new object */ |
ac0e6a2f | 468 | req = sv_2mortal( new_version(req) ); |
137d6fc0 | 469 | } |
1571675a | 470 | |
ac0e6a2f | 471 | if ( vcmp( req, sv ) > 0 ) { |
ef8f7699 | 472 | if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) { |
d0c0e7dd | 473 | Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--" |
ed1db70e | 474 | "this is only version %"SVf"", |
d0c0e7dd | 475 | HEKfARG(HvNAME_HEK(pkg)), |
e3a22e3f GF |
476 | SVfARG(sv_2mortal(vnormal(req))), |
477 | SVfARG(sv_2mortal(vnormal(sv)))); | |
ac0e6a2f | 478 | } else { |
d0c0e7dd | 479 | Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--" |
ed1db70e | 480 | "this is only version %"SVf, |
d0c0e7dd | 481 | HEKfARG(HvNAME_HEK(pkg)), |
e3a22e3f GF |
482 | SVfARG(sv_2mortal(vstringify(req))), |
483 | SVfARG(sv_2mortal(vstringify(sv)))); | |
ac0e6a2f RGS |
484 | } |
485 | } | |
486 | ||
2d8e6c8d | 487 | } |
6d4a7be2 | 488 | |
a97f6d14 JP |
489 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
490 | ST(0) = sv_2mortal(vstringify(sv)); | |
491 | } else { | |
492 | ST(0) = sv; | |
493 | } | |
6d4a7be2 | 494 | |
495 | XSRETURN(1); | |
496 | } | |
497 | ||
439cb1c4 JP |
498 | XS(XS_version_new) |
499 | { | |
97aff369 | 500 | dVAR; |
439cb1c4 | 501 | dXSARGS; |
b2a8d771 | 502 | if (items > 3 || items < 1) |
afa74d42 | 503 | croak_xs_usage(cv, "class, version"); |
439cb1c4 JP |
504 | SP -= items; |
505 | { | |
137d6fc0 JP |
506 | SV *vs = ST(1); |
507 | SV *rv; | |
ed1db70e BF |
508 | STRLEN len; |
509 | const char *classname; | |
510 | U32 flags; | |
0c1d6ad7 JP |
511 | |
512 | /* Just in case this is something like a tied hash */ | |
513 | SvGETMAGIC(vs); | |
514 | ||
ed1db70e BF |
515 | if ( sv_isobject(ST(0)) ) { /* get the class if called as an object method */ |
516 | const HV * stash = SvSTASH(SvRV(ST(0))); | |
517 | classname = HvNAME(stash); | |
518 | len = HvNAMELEN(stash); | |
519 | flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0; | |
520 | } | |
521 | else { | |
522 | classname = SvPV(ST(0), len); | |
523 | flags = SvUTF8(ST(0)); | |
524 | } | |
9137345a | 525 | |
91152fc1 | 526 | if ( items == 1 || ! SvOK(vs) ) { /* no param or explicit undef */ |
92dcf8ce JP |
527 | /* create empty object */ |
528 | vs = sv_newmortal(); | |
be5574c0 | 529 | sv_setpvs(vs, "0"); |
9137345a JP |
530 | } |
531 | else if ( items == 3 ) { | |
532 | vs = sv_newmortal(); | |
cfd0369c | 533 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd | 534 | } |
439cb1c4 | 535 | |
137d6fc0 | 536 | rv = new_version(vs); |
ed1db70e BF |
537 | if ( strnNE(classname,"version", len) ) /* inherited new() */ |
538 | sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags)); | |
137d6fc0 | 539 | |
6e449a3a | 540 | mPUSHs(rv); |
439cb1c4 JP |
541 | PUTBACK; |
542 | return; | |
543 | } | |
544 | } | |
545 | ||
546 | XS(XS_version_stringify) | |
547 | { | |
97aff369 | 548 | dVAR; |
41be1fbd JH |
549 | dXSARGS; |
550 | if (items < 1) | |
afa74d42 | 551 | croak_xs_usage(cv, "lobj, ..."); |
41be1fbd JH |
552 | SP -= items; |
553 | { | |
d808b681 | 554 | SV * lobj = ST(0); |
41be1fbd | 555 | |
573a19fb | 556 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 557 | lobj = SvRV(lobj); |
41be1fbd JH |
558 | } |
559 | else | |
560 | Perl_croak(aTHX_ "lobj is not of type version"); | |
561 | ||
6e449a3a | 562 | mPUSHs(vstringify(lobj)); |
41be1fbd JH |
563 | |
564 | PUTBACK; | |
565 | return; | |
566 | } | |
439cb1c4 JP |
567 | } |
568 | ||
569 | XS(XS_version_numify) | |
570 | { | |
97aff369 | 571 | dVAR; |
41be1fbd JH |
572 | dXSARGS; |
573 | if (items < 1) | |
afa74d42 | 574 | croak_xs_usage(cv, "lobj, ..."); |
41be1fbd JH |
575 | SP -= items; |
576 | { | |
d808b681 | 577 | SV * lobj = ST(0); |
41be1fbd | 578 | |
573a19fb | 579 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 580 | lobj = SvRV(lobj); |
41be1fbd JH |
581 | } |
582 | else | |
583 | Perl_croak(aTHX_ "lobj is not of type version"); | |
584 | ||
6e449a3a | 585 | mPUSHs(vnumify(lobj)); |
41be1fbd JH |
586 | |
587 | PUTBACK; | |
588 | return; | |
589 | } | |
439cb1c4 JP |
590 | } |
591 | ||
9137345a JP |
592 | XS(XS_version_normal) |
593 | { | |
97aff369 | 594 | dVAR; |
9137345a JP |
595 | dXSARGS; |
596 | if (items < 1) | |
afa74d42 | 597 | croak_xs_usage(cv, "lobj, ..."); |
9137345a JP |
598 | SP -= items; |
599 | { | |
d808b681 | 600 | SV * lobj = ST(0); |
9137345a | 601 | |
573a19fb | 602 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 603 | lobj = SvRV(lobj); |
9137345a JP |
604 | } |
605 | else | |
606 | Perl_croak(aTHX_ "lobj is not of type version"); | |
607 | ||
6e449a3a | 608 | mPUSHs(vnormal(lobj)); |
9137345a JP |
609 | |
610 | PUTBACK; | |
611 | return; | |
612 | } | |
613 | } | |
614 | ||
439cb1c4 JP |
615 | XS(XS_version_vcmp) |
616 | { | |
97aff369 | 617 | dVAR; |
41be1fbd JH |
618 | dXSARGS; |
619 | if (items < 1) | |
afa74d42 | 620 | croak_xs_usage(cv, "lobj, ..."); |
41be1fbd JH |
621 | SP -= items; |
622 | { | |
d808b681 | 623 | SV * lobj = ST(0); |
41be1fbd | 624 | |
573a19fb | 625 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 626 | lobj = SvRV(lobj); |
41be1fbd JH |
627 | } |
628 | else | |
629 | Perl_croak(aTHX_ "lobj is not of type version"); | |
630 | ||
631 | { | |
632 | SV *rs; | |
633 | SV *rvs; | |
634 | SV * robj = ST(1); | |
7452cf6a | 635 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd | 636 | |
573a19fb | 637 | if ( !sv_isobject(robj) || !sv_derived_from(robj, "version") ) |
41be1fbd | 638 | { |
e3a22e3f GF |
639 | robj = new_version(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP)); |
640 | sv_2mortal(robj); | |
41be1fbd JH |
641 | } |
642 | rvs = SvRV(robj); | |
643 | ||
644 | if ( swap ) | |
645 | { | |
646 | rs = newSViv(vcmp(rvs,lobj)); | |
647 | } | |
648 | else | |
649 | { | |
650 | rs = newSViv(vcmp(lobj,rvs)); | |
651 | } | |
652 | ||
6e449a3a | 653 | mPUSHs(rs); |
41be1fbd JH |
654 | } |
655 | ||
656 | PUTBACK; | |
657 | return; | |
658 | } | |
439cb1c4 JP |
659 | } |
660 | ||
661 | XS(XS_version_boolean) | |
662 | { | |
97aff369 JH |
663 | dVAR; |
664 | dXSARGS; | |
665 | if (items < 1) | |
afa74d42 | 666 | croak_xs_usage(cv, "lobj, ..."); |
97aff369 | 667 | SP -= items; |
573a19fb | 668 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) { |
c4420975 | 669 | SV * const lobj = SvRV(ST(0)); |
bcb2959f FC |
670 | SV * const rs = |
671 | newSViv( vcmp(lobj, | |
672 | sv_2mortal(new_version( | |
673 | sv_2mortal(newSVpvs("0")) | |
674 | )) | |
675 | ) | |
676 | ); | |
6e449a3a | 677 | mPUSHs(rs); |
c4420975 AL |
678 | PUTBACK; |
679 | return; | |
680 | } | |
681 | else | |
682 | Perl_croak(aTHX_ "lobj is not of type version"); | |
439cb1c4 JP |
683 | } |
684 | ||
685 | XS(XS_version_noop) | |
686 | { | |
97aff369 | 687 | dVAR; |
2dfd8427 AL |
688 | dXSARGS; |
689 | if (items < 1) | |
afa74d42 | 690 | croak_xs_usage(cv, "lobj, ..."); |
573a19fb | 691 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) |
2dfd8427 AL |
692 | Perl_croak(aTHX_ "operation not supported with version object"); |
693 | else | |
694 | Perl_croak(aTHX_ "lobj is not of type version"); | |
695 | #ifndef HASATTRIBUTE_NORETURN | |
696 | XSRETURN_EMPTY; | |
697 | #endif | |
439cb1c4 JP |
698 | } |
699 | ||
c8d69e4a JP |
700 | XS(XS_version_is_alpha) |
701 | { | |
97aff369 | 702 | dVAR; |
c8d69e4a JP |
703 | dXSARGS; |
704 | if (items != 1) | |
afa74d42 | 705 | croak_xs_usage(cv, "lobj"); |
c8d69e4a | 706 | SP -= items; |
573a19fb | 707 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) { |
c4420975 | 708 | SV * const lobj = ST(0); |
ef8f7699 | 709 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) ) |
c4420975 AL |
710 | XSRETURN_YES; |
711 | else | |
712 | XSRETURN_NO; | |
c8d69e4a JP |
713 | PUTBACK; |
714 | return; | |
715 | } | |
c4420975 AL |
716 | else |
717 | Perl_croak(aTHX_ "lobj is not of type version"); | |
c8d69e4a JP |
718 | } |
719 | ||
137d6fc0 JP |
720 | XS(XS_version_qv) |
721 | { | |
97aff369 | 722 | dVAR; |
137d6fc0 | 723 | dXSARGS; |
4ed3fda4 | 724 | PERL_UNUSED_ARG(cv); |
137d6fc0 JP |
725 | SP -= items; |
726 | { | |
f941e658 JP |
727 | SV * ver = ST(0); |
728 | SV * rv; | |
ed1db70e BF |
729 | STRLEN len = 0; |
730 | const char * classname = ""; | |
731 | U32 flags = 0; | |
0c1d6ad7 JP |
732 | if ( items == 2 ) { |
733 | SvGETMAGIC(ST(1)); | |
734 | if (SvOK(ST(1))) { | |
735 | ver = ST(1); | |
736 | } | |
737 | else { | |
738 | Perl_croak(aTHX_ "Invalid version format (version required)"); | |
739 | } | |
ed1db70e BF |
740 | if ( sv_isobject(ST(0)) ) { /* class called as an object method */ |
741 | const HV * stash = SvSTASH(SvRV(ST(0))); | |
742 | classname = HvNAME(stash); | |
743 | len = HvNAMELEN(stash); | |
744 | flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0; | |
745 | } | |
746 | else { | |
747 | classname = SvPV(ST(0), len); | |
748 | flags = SvUTF8(ST(0)); | |
749 | } | |
750 | } | |
f941e658 JP |
751 | if ( !SvVOK(ver) ) { /* not already a v-string */ |
752 | rv = sv_newmortal(); | |
ac0e6a2f RGS |
753 | sv_setsv(rv,ver); /* make a duplicate */ |
754 | upg_version(rv, TRUE); | |
f941e658 JP |
755 | } else { |
756 | rv = sv_2mortal(new_version(ver)); | |
137d6fc0 | 757 | } |
ed1db70e BF |
758 | if ( items == 2 |
759 | && strnNE(classname,"version", len) ) { /* inherited new() */ | |
760 | sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags)); | |
761 | } | |
f941e658 JP |
762 | PUSHs(rv); |
763 | } | |
764 | PUTBACK; | |
765 | return; | |
766 | } | |
137d6fc0 | 767 | |
f941e658 JP |
768 | XS(XS_version_is_qv) |
769 | { | |
770 | dVAR; | |
771 | dXSARGS; | |
772 | if (items != 1) | |
773 | croak_xs_usage(cv, "lobj"); | |
774 | SP -= items; | |
573a19fb | 775 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) { |
f941e658 JP |
776 | SV * const lobj = ST(0); |
777 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) ) | |
778 | XSRETURN_YES; | |
779 | else | |
780 | XSRETURN_NO; | |
137d6fc0 JP |
781 | PUTBACK; |
782 | return; | |
783 | } | |
f941e658 JP |
784 | else |
785 | Perl_croak(aTHX_ "lobj is not of type version"); | |
137d6fc0 JP |
786 | } |
787 | ||
8800c35a JH |
788 | XS(XS_utf8_is_utf8) |
789 | { | |
97aff369 | 790 | dVAR; |
41be1fbd JH |
791 | dXSARGS; |
792 | if (items != 1) | |
afa74d42 | 793 | croak_xs_usage(cv, "sv"); |
c4420975 | 794 | else { |
76f73021 GF |
795 | SV * const sv = ST(0); |
796 | SvGETMAGIC(sv); | |
c4420975 AL |
797 | if (SvUTF8(sv)) |
798 | XSRETURN_YES; | |
799 | else | |
800 | XSRETURN_NO; | |
41be1fbd JH |
801 | } |
802 | XSRETURN_EMPTY; | |
8800c35a JH |
803 | } |
804 | ||
1b026014 NIS |
805 | XS(XS_utf8_valid) |
806 | { | |
97aff369 | 807 | dVAR; |
41be1fbd JH |
808 | dXSARGS; |
809 | if (items != 1) | |
afa74d42 | 810 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
811 | else { |
812 | SV * const sv = ST(0); | |
813 | STRLEN len; | |
814 | const char * const s = SvPV_const(sv,len); | |
815 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
816 | XSRETURN_YES; | |
817 | else | |
818 | XSRETURN_NO; | |
819 | } | |
41be1fbd | 820 | XSRETURN_EMPTY; |
1b026014 NIS |
821 | } |
822 | ||
823 | XS(XS_utf8_encode) | |
824 | { | |
97aff369 | 825 | dVAR; |
1b026014 NIS |
826 | dXSARGS; |
827 | if (items != 1) | |
afa74d42 | 828 | croak_xs_usage(cv, "sv"); |
c4420975 | 829 | sv_utf8_encode(ST(0)); |
892f9127 | 830 | SvSETMAGIC(ST(0)); |
1b026014 NIS |
831 | XSRETURN_EMPTY; |
832 | } | |
833 | ||
834 | XS(XS_utf8_decode) | |
835 | { | |
97aff369 | 836 | dVAR; |
1b026014 NIS |
837 | dXSARGS; |
838 | if (items != 1) | |
afa74d42 | 839 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
840 | else { |
841 | SV * const sv = ST(0); | |
b2b7346b | 842 | bool RETVAL; |
c7102404 | 843 | SvPV_force_nolen(sv); |
b2b7346b | 844 | RETVAL = sv_utf8_decode(sv); |
77fc86ef | 845 | SvSETMAGIC(sv); |
1b026014 | 846 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
847 | } |
848 | XSRETURN(1); | |
849 | } | |
850 | ||
851 | XS(XS_utf8_upgrade) | |
852 | { | |
97aff369 | 853 | dVAR; |
1b026014 NIS |
854 | dXSARGS; |
855 | if (items != 1) | |
afa74d42 | 856 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
857 | else { |
858 | SV * const sv = ST(0); | |
1b026014 NIS |
859 | STRLEN RETVAL; |
860 | dXSTARG; | |
861 | ||
862 | RETVAL = sv_utf8_upgrade(sv); | |
863 | XSprePUSH; PUSHi((IV)RETVAL); | |
864 | } | |
865 | XSRETURN(1); | |
866 | } | |
867 | ||
868 | XS(XS_utf8_downgrade) | |
869 | { | |
97aff369 | 870 | dVAR; |
1b026014 NIS |
871 | dXSARGS; |
872 | if (items < 1 || items > 2) | |
afa74d42 | 873 | croak_xs_usage(cv, "sv, failok=0"); |
c4420975 AL |
874 | else { |
875 | SV * const sv = ST(0); | |
6867be6d AL |
876 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
877 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 878 | |
1b026014 | 879 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
880 | } |
881 | XSRETURN(1); | |
882 | } | |
883 | ||
884 | XS(XS_utf8_native_to_unicode) | |
885 | { | |
97aff369 | 886 | dVAR; |
1b026014 | 887 | dXSARGS; |
6867be6d | 888 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
889 | |
890 | if (items > 1) | |
afa74d42 | 891 | croak_xs_usage(cv, "sv"); |
b7953727 | 892 | |
1b026014 NIS |
893 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
894 | XSRETURN(1); | |
895 | } | |
896 | ||
897 | XS(XS_utf8_unicode_to_native) | |
898 | { | |
97aff369 | 899 | dVAR; |
1b026014 | 900 | dXSARGS; |
6867be6d | 901 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
902 | |
903 | if (items > 1) | |
afa74d42 | 904 | croak_xs_usage(cv, "sv"); |
b7953727 | 905 | |
1b026014 NIS |
906 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
907 | XSRETURN(1); | |
908 | } | |
909 | ||
14a976d6 | 910 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 | 911 | { |
97aff369 | 912 | dVAR; |
29569577 | 913 | dXSARGS; |
80b6a949 AB |
914 | SV * const svz = ST(0); |
915 | SV * sv; | |
58c0efa5 | 916 | PERL_UNUSED_ARG(cv); |
6867be6d | 917 | |
80b6a949 AB |
918 | /* [perl #77776] - called as &foo() not foo() */ |
919 | if (!SvROK(svz)) | |
920 | croak_xs_usage(cv, "SCALAR[, ON]"); | |
921 | ||
922 | sv = SvRV(svz); | |
923 | ||
29569577 | 924 | if (items == 1) { |
1620522e | 925 | if (SvREADONLY(sv)) |
29569577 JH |
926 | XSRETURN_YES; |
927 | else | |
928 | XSRETURN_NO; | |
929 | } | |
930 | else if (items == 2) { | |
931 | if (SvTRUE(ST(1))) { | |
1620522e | 932 | #ifdef PERL_OLD_COPY_ON_WRITE |
3e89ba19 | 933 | if (SvIsCOW(sv)) sv_force_normal(sv); |
1620522e | 934 | #endif |
29569577 | 935 | SvREADONLY_on(sv); |
38be3d00 FC |
936 | if (SvTYPE(sv) == SVt_PVAV && AvFILLp(sv) != -1) { |
937 | /* for constant.pm; nobody else should be calling this | |
938 | on arrays anyway. */ | |
939 | SV **svp; | |
940 | for (svp = AvARRAY(sv) + AvFILLp(sv) | |
941 | ; svp >= AvARRAY(sv) | |
942 | ; --svp) | |
943 | if (*svp) SvPADTMP_on(*svp); | |
944 | } | |
29569577 JH |
945 | XSRETURN_YES; |
946 | } | |
947 | else { | |
14a976d6 | 948 | /* I hope you really know what you are doing. */ |
1620522e | 949 | SvREADONLY_off(sv); |
29569577 JH |
950 | XSRETURN_NO; |
951 | } | |
952 | } | |
14a976d6 | 953 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 | 954 | } |
14a976d6 | 955 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 | 956 | { |
97aff369 | 957 | dVAR; |
29569577 | 958 | dXSARGS; |
80b6a949 AB |
959 | SV * const svz = ST(0); |
960 | SV * sv; | |
fa3febb6 | 961 | U32 refcnt; |
58c0efa5 | 962 | PERL_UNUSED_ARG(cv); |
6867be6d | 963 | |
80b6a949 | 964 | /* [perl #77776] - called as &foo() not foo() */ |
fa3febb6 | 965 | if ((items != 1 && items != 2) || !SvROK(svz)) |
80b6a949 AB |
966 | croak_xs_usage(cv, "SCALAR[, REFCOUNT]"); |
967 | ||
968 | sv = SvRV(svz); | |
969 | ||
14a976d6 | 970 | /* I hope you really know what you are doing. */ |
fa3febb6 DD |
971 | /* idea is for SvREFCNT(sv) to be accessed only once */ |
972 | refcnt = items == 2 ? | |
973 | /* we free one ref on exit */ | |
974 | (SvREFCNT(sv) = SvUV(ST(1)) + 1) | |
975 | : SvREFCNT(sv); | |
976 | XSRETURN_UV(refcnt - 1); /* Minus the ref created for us. */ | |
977 | ||
29569577 JH |
978 | } |
979 | ||
f044d0d1 | 980 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f | 981 | { |
97aff369 | 982 | dVAR; |
dfd4ef2f | 983 | dXSARGS; |
6867be6d | 984 | |
80b6a949 | 985 | if (items != 1 || !SvROK(ST(0))) |
afa74d42 | 986 | croak_xs_usage(cv, "hv"); |
c4420975 | 987 | else { |
ef8f7699 | 988 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); |
c4420975 AL |
989 | hv_clear_placeholders(hv); |
990 | XSRETURN(0); | |
991 | } | |
dfd4ef2f | 992 | } |
39f7a870 JH |
993 | |
994 | XS(XS_PerlIO_get_layers) | |
995 | { | |
97aff369 | 996 | dVAR; |
39f7a870 JH |
997 | dXSARGS; |
998 | if (items < 1 || items % 2 == 0) | |
afa74d42 | 999 | croak_xs_usage(cv, "filehandle[,args]"); |
5fef3b4a | 1000 | #ifdef USE_PERLIO |
39f7a870 JH |
1001 | { |
1002 | SV * sv; | |
1003 | GV * gv; | |
1004 | IO * io; | |
1005 | bool input = TRUE; | |
1006 | bool details = FALSE; | |
1007 | ||
1008 | if (items > 1) { | |
c4420975 | 1009 | SV * const *svp; |
39f7a870 | 1010 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
1011 | SV * const * const varp = svp; |
1012 | SV * const * const valp = svp + 1; | |
39f7a870 | 1013 | STRLEN klen; |
c4420975 | 1014 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
1015 | |
1016 | switch (*key) { | |
1017 | case 'i': | |
1018 | if (klen == 5 && memEQ(key, "input", 5)) { | |
1019 | input = SvTRUE(*valp); | |
1020 | break; | |
1021 | } | |
1022 | goto fail; | |
1023 | case 'o': | |
1024 | if (klen == 6 && memEQ(key, "output", 6)) { | |
1025 | input = !SvTRUE(*valp); | |
1026 | break; | |
1027 | } | |
1028 | goto fail; | |
1029 | case 'd': | |
1030 | if (klen == 7 && memEQ(key, "details", 7)) { | |
1031 | details = SvTRUE(*valp); | |
1032 | break; | |
1033 | } | |
1034 | goto fail; | |
1035 | default: | |
1036 | fail: | |
1037 | Perl_croak(aTHX_ | |
1038 | "get_layers: unknown argument '%s'", | |
1039 | key); | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | SP -= (items - 1); | |
1044 | } | |
1045 | ||
1046 | sv = POPs; | |
7f9aa7d3 | 1047 | gv = MAYBE_DEREF_GV(sv); |
39f7a870 | 1048 | |
3825652d | 1049 | if (!gv && !SvROK(sv)) |
7f9aa7d3 | 1050 | gv = gv_fetchsv_nomg(sv, 0, SVt_PVIO); |
39f7a870 JH |
1051 | |
1052 | if (gv && (io = GvIO(gv))) { | |
c4420975 | 1053 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 | 1054 | IoIFP(io) : IoOFP(io)); |
c70927a6 FC |
1055 | SSize_t i; |
1056 | const SSize_t last = av_len(av); | |
1057 | SSize_t nitem = 0; | |
39f7a870 JH |
1058 | |
1059 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
1060 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
1061 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
1062 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 1063 | |
c4420975 AL |
1064 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
1065 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
1066 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 | 1067 | |
2102d7a2 | 1068 | EXTEND(SP, 3); /* Three is the max in all branches: better check just once */ |
39f7a870 | 1069 | if (details) { |
92e45a3e NC |
1070 | /* Indents of 5? Yuck. */ |
1071 | /* We know that PerlIO_get_layers creates a new SV for | |
1072 | the name and flags, so we can just take a reference | |
1073 | and "steal" it when we free the AV below. */ | |
2102d7a2 | 1074 | PUSHs(namok |
92e45a3e | 1075 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
ec3bab8e | 1076 | : &PL_sv_undef); |
2102d7a2 | 1077 | PUSHs(argok |
92e45a3e NC |
1078 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
1079 | SvCUR(*argsvp), | |
1080 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) | |
1081 | | SVs_TEMP) | |
1082 | : &PL_sv_undef); | |
2102d7a2 | 1083 | PUSHs(flgok |
92e45a3e | 1084 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
ec3bab8e | 1085 | : &PL_sv_undef); |
39f7a870 JH |
1086 | nitem += 3; |
1087 | } | |
1088 | else { | |
1089 | if (namok && argok) | |
2102d7a2 | 1090 | PUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
be2597df | 1091 | SVfARG(*namsvp), |
1eb9e81d | 1092 | SVfARG(*argsvp)))); |
39f7a870 | 1093 | else if (namok) |
2102d7a2 | 1094 | PUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
39f7a870 | 1095 | else |
2102d7a2 | 1096 | PUSHs(&PL_sv_undef); |
39f7a870 JH |
1097 | nitem++; |
1098 | if (flgok) { | |
c4420975 | 1099 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
1100 | |
1101 | if (flags & PERLIO_F_UTF8) { | |
2102d7a2 | 1102 | PUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
39f7a870 JH |
1103 | nitem++; |
1104 | } | |
1105 | } | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | SvREFCNT_dec(av); | |
1110 | ||
1111 | XSRETURN(nitem); | |
1112 | } | |
1113 | } | |
5fef3b4a | 1114 | #endif |
39f7a870 JH |
1115 | |
1116 | XSRETURN(0); | |
1117 | } | |
1118 | ||
241d1a3b | 1119 | |
80305961 YO |
1120 | XS(XS_re_is_regexp) |
1121 | { | |
1122 | dVAR; | |
1123 | dXSARGS; | |
f7e71195 AB |
1124 | PERL_UNUSED_VAR(cv); |
1125 | ||
80305961 | 1126 | if (items != 1) |
afa74d42 | 1127 | croak_xs_usage(cv, "sv"); |
f7e71195 | 1128 | |
f7e71195 AB |
1129 | if (SvRXOK(ST(0))) { |
1130 | XSRETURN_YES; | |
1131 | } else { | |
1132 | XSRETURN_NO; | |
80305961 YO |
1133 | } |
1134 | } | |
1135 | ||
192b9cd1 | 1136 | XS(XS_re_regnames_count) |
80305961 | 1137 | { |
192b9cd1 AB |
1138 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
1139 | SV * ret; | |
80305961 YO |
1140 | dVAR; |
1141 | dXSARGS; | |
192b9cd1 AB |
1142 | |
1143 | if (items != 0) | |
afa74d42 | 1144 | croak_xs_usage(cv, ""); |
192b9cd1 AB |
1145 | |
1146 | SP -= items; | |
fdae9473 | 1147 | PUTBACK; |
192b9cd1 AB |
1148 | |
1149 | if (!rx) | |
1150 | XSRETURN_UNDEF; | |
1151 | ||
1152 | ret = CALLREG_NAMED_BUFF_COUNT(rx); | |
1153 | ||
1154 | SPAGAIN; | |
fdae9473 NC |
1155 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); |
1156 | XSRETURN(1); | |
192b9cd1 AB |
1157 | } |
1158 | ||
1159 | XS(XS_re_regname) | |
1160 | { | |
1161 | dVAR; | |
1162 | dXSARGS; | |
1163 | REGEXP * rx; | |
1164 | U32 flags; | |
1165 | SV * ret; | |
1166 | ||
28d8d7f4 | 1167 | if (items < 1 || items > 2) |
afa74d42 | 1168 | croak_xs_usage(cv, "name[, all ]"); |
192b9cd1 | 1169 | |
80305961 | 1170 | SP -= items; |
fdae9473 | 1171 | PUTBACK; |
80305961 | 1172 | |
192b9cd1 AB |
1173 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
1174 | ||
1175 | if (!rx) | |
1176 | XSRETURN_UNDEF; | |
1177 | ||
1178 | if (items == 2 && SvTRUE(ST(1))) { | |
f1b875a0 | 1179 | flags = RXapif_ALL; |
192b9cd1 | 1180 | } else { |
f1b875a0 | 1181 | flags = RXapif_ONE; |
80305961 | 1182 | } |
f1b875a0 | 1183 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
192b9cd1 | 1184 | |
fdae9473 NC |
1185 | SPAGAIN; |
1186 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); | |
1187 | XSRETURN(1); | |
80305961 YO |
1188 | } |
1189 | ||
192b9cd1 | 1190 | |
80305961 YO |
1191 | XS(XS_re_regnames) |
1192 | { | |
192b9cd1 | 1193 | dVAR; |
80305961 | 1194 | dXSARGS; |
192b9cd1 AB |
1195 | REGEXP * rx; |
1196 | U32 flags; | |
1197 | SV *ret; | |
1198 | AV *av; | |
c70927a6 FC |
1199 | SSize_t length; |
1200 | SSize_t i; | |
192b9cd1 AB |
1201 | SV **entry; |
1202 | ||
1203 | if (items > 1) | |
afa74d42 | 1204 | croak_xs_usage(cv, "[all]"); |
192b9cd1 AB |
1205 | |
1206 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; | |
1207 | ||
1208 | if (!rx) | |
1209 | XSRETURN_UNDEF; | |
1210 | ||
1211 | if (items == 1 && SvTRUE(ST(0))) { | |
f1b875a0 | 1212 | flags = RXapif_ALL; |
192b9cd1 | 1213 | } else { |
f1b875a0 | 1214 | flags = RXapif_ONE; |
192b9cd1 AB |
1215 | } |
1216 | ||
80305961 | 1217 | SP -= items; |
fdae9473 | 1218 | PUTBACK; |
80305961 | 1219 | |
f1b875a0 | 1220 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
192b9cd1 AB |
1221 | |
1222 | SPAGAIN; | |
1223 | ||
192b9cd1 AB |
1224 | if (!ret) |
1225 | XSRETURN_UNDEF; | |
1226 | ||
502c6561 | 1227 | av = MUTABLE_AV(SvRV(ret)); |
192b9cd1 AB |
1228 | length = av_len(av); |
1229 | ||
2102d7a2 | 1230 | EXTEND(SP, length+1); /* better extend stack just once */ |
192b9cd1 AB |
1231 | for (i = 0; i <= length; i++) { |
1232 | entry = av_fetch(av, i, FALSE); | |
1233 | ||
1234 | if (!entry) | |
1235 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); | |
1236 | ||
2102d7a2 | 1237 | mPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
80305961 | 1238 | } |
ec83ea38 MHM |
1239 | |
1240 | SvREFCNT_dec(ret); | |
1241 | ||
192b9cd1 AB |
1242 | PUTBACK; |
1243 | return; | |
80305961 YO |
1244 | } |
1245 | ||
192c1e27 JH |
1246 | XS(XS_re_regexp_pattern) |
1247 | { | |
1248 | dVAR; | |
1249 | dXSARGS; | |
1250 | REGEXP *re; | |
192c1e27 | 1251 | |
22d874e2 DD |
1252 | EXTEND(SP, 2); |
1253 | SP -= items; | |
192c1e27 | 1254 | if (items != 1) |
afa74d42 | 1255 | croak_xs_usage(cv, "sv"); |
192c1e27 | 1256 | |
192c1e27 JH |
1257 | /* |
1258 | Checks if a reference is a regex or not. If the parameter is | |
1259 | not a ref, or is not the result of a qr// then returns false | |
1260 | in scalar context and an empty list in list context. | |
1261 | Otherwise in list context it returns the pattern and the | |
1262 | modifiers, in scalar context it returns the pattern just as it | |
1263 | would if the qr// was stringified normally, regardless as | |
486ec47a | 1264 | to the class of the variable and any stringification overloads |
192c1e27 JH |
1265 | on the object. |
1266 | */ | |
1267 | ||
1268 | if ((re = SvRX(ST(0)))) /* assign deliberate */ | |
1269 | { | |
22c985d5 | 1270 | /* Houston, we have a regex! */ |
192c1e27 | 1271 | SV *pattern; |
192c1e27 JH |
1272 | |
1273 | if ( GIMME_V == G_ARRAY ) { | |
9de15fec | 1274 | STRLEN left = 0; |
a62b1201 | 1275 | char reflags[sizeof(INT_PAT_MODS) + MAX_CHARSET_NAME_LENGTH]; |
69af1167 SH |
1276 | const char *fptr; |
1277 | char ch; | |
1278 | U16 match_flags; | |
1279 | ||
192c1e27 JH |
1280 | /* |
1281 | we are in list context so stringify | |
1282 | the modifiers that apply. We ignore "negative | |
a62b1201 | 1283 | modifiers" in this scenario, and the default character set |
192c1e27 JH |
1284 | */ |
1285 | ||
a62b1201 KW |
1286 | if (get_regex_charset(RX_EXTFLAGS(re)) != REGEX_DEPENDS_CHARSET) { |
1287 | STRLEN len; | |
1288 | const char* const name = get_regex_charset_name(RX_EXTFLAGS(re), | |
1289 | &len); | |
1290 | Copy(name, reflags + left, len, char); | |
1291 | left += len; | |
9de15fec | 1292 | } |
69af1167 | 1293 | fptr = INT_PAT_MODS; |
73134a2e | 1294 | match_flags = (U16)((RX_EXTFLAGS(re) & RXf_PMf_COMPILETIME) |
192c1e27 JH |
1295 | >> RXf_PMf_STD_PMMOD_SHIFT); |
1296 | ||
1297 | while((ch = *fptr++)) { | |
1298 | if(match_flags & 1) { | |
1299 | reflags[left++] = ch; | |
1300 | } | |
1301 | match_flags >>= 1; | |
1302 | } | |
1303 | ||
fb632ce3 NC |
1304 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
1305 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 JH |
1306 | |
1307 | /* return the pattern and the modifiers */ | |
2102d7a2 S |
1308 | PUSHs(pattern); |
1309 | PUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); | |
192c1e27 JH |
1310 | XSRETURN(2); |
1311 | } else { | |
1312 | /* Scalar, so use the string that Perl would return */ | |
1313 | /* return the pattern in (?msix:..) format */ | |
1314 | #if PERL_VERSION >= 11 | |
daba3364 | 1315 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
192c1e27 | 1316 | #else |
fb632ce3 NC |
1317 | pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re), |
1318 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 | 1319 | #endif |
22d874e2 | 1320 | PUSHs(pattern); |
192c1e27 JH |
1321 | XSRETURN(1); |
1322 | } | |
1323 | } else { | |
1324 | /* It ain't a regexp folks */ | |
1325 | if ( GIMME_V == G_ARRAY ) { | |
1326 | /* return the empty list */ | |
1327 | XSRETURN_UNDEF; | |
1328 | } else { | |
1329 | /* Because of the (?:..) wrapping involved in a | |
1330 | stringified pattern it is impossible to get a | |
1331 | result for a real regexp that would evaluate to | |
1332 | false. Therefore we can return PL_sv_no to signify | |
1333 | that the object is not a regex, this means that one | |
1334 | can say | |
1335 | ||
1336 | if (regex($might_be_a_regex) eq '(?:foo)') { } | |
1337 | ||
1338 | and not worry about undefined values. | |
1339 | */ | |
1340 | XSRETURN_NO; | |
1341 | } | |
1342 | } | |
1343 | /* NOT-REACHED */ | |
1344 | } | |
1345 | ||
eff5b9d5 NC |
1346 | struct xsub_details { |
1347 | const char *name; | |
1348 | XSUBADDR_t xsub; | |
1349 | const char *proto; | |
1350 | }; | |
1351 | ||
613875e2 | 1352 | const struct xsub_details details[] = { |
eff5b9d5 NC |
1353 | {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL}, |
1354 | {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL}, | |
1355 | {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL}, | |
1356 | {"UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, NULL}, | |
1357 | {"version::()", XS_version_noop, NULL}, | |
1358 | {"version::new", XS_version_new, NULL}, | |
1359 | {"version::parse", XS_version_new, NULL}, | |
1360 | {"version::(\"\"", XS_version_stringify, NULL}, | |
1361 | {"version::stringify", XS_version_stringify, NULL}, | |
1362 | {"version::(0+", XS_version_numify, NULL}, | |
1363 | {"version::numify", XS_version_numify, NULL}, | |
1364 | {"version::normal", XS_version_normal, NULL}, | |
1365 | {"version::(cmp", XS_version_vcmp, NULL}, | |
1366 | {"version::(<=>", XS_version_vcmp, NULL}, | |
1367 | {"version::vcmp", XS_version_vcmp, NULL}, | |
1368 | {"version::(bool", XS_version_boolean, NULL}, | |
1369 | {"version::boolean", XS_version_boolean, NULL}, | |
43d9ecf9 JP |
1370 | {"version::(+", XS_version_noop, NULL}, |
1371 | {"version::(-", XS_version_noop, NULL}, | |
1372 | {"version::(*", XS_version_noop, NULL}, | |
1373 | {"version::(/", XS_version_noop, NULL}, | |
1374 | {"version::(+=", XS_version_noop, NULL}, | |
1375 | {"version::(-=", XS_version_noop, NULL}, | |
1376 | {"version::(*=", XS_version_noop, NULL}, | |
1377 | {"version::(/=", XS_version_noop, NULL}, | |
1378 | {"version::(abs", XS_version_noop, NULL}, | |
eff5b9d5 NC |
1379 | {"version::(nomethod", XS_version_noop, NULL}, |
1380 | {"version::noop", XS_version_noop, NULL}, | |
1381 | {"version::is_alpha", XS_version_is_alpha, NULL}, | |
1382 | {"version::qv", XS_version_qv, NULL}, | |
1383 | {"version::declare", XS_version_qv, NULL}, | |
1384 | {"version::is_qv", XS_version_is_qv, NULL}, | |
1385 | {"utf8::is_utf8", XS_utf8_is_utf8, NULL}, | |
1386 | {"utf8::valid", XS_utf8_valid, NULL}, | |
1387 | {"utf8::encode", XS_utf8_encode, NULL}, | |
1388 | {"utf8::decode", XS_utf8_decode, NULL}, | |
1389 | {"utf8::upgrade", XS_utf8_upgrade, NULL}, | |
1390 | {"utf8::downgrade", XS_utf8_downgrade, NULL}, | |
1391 | {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL}, | |
1392 | {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL}, | |
1393 | {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"}, | |
1394 | {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"}, | |
1395 | {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"}, | |
1396 | {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"}, | |
eff5b9d5 NC |
1397 | {"re::is_regexp", XS_re_is_regexp, "$"}, |
1398 | {"re::regname", XS_re_regname, ";$$"}, | |
1399 | {"re::regnames", XS_re_regnames, ";$"}, | |
1400 | {"re::regnames_count", XS_re_regnames_count, ""}, | |
1401 | {"re::regexp_pattern", XS_re_regexp_pattern, "$"}, | |
eff5b9d5 NC |
1402 | }; |
1403 | ||
1404 | void | |
1405 | Perl_boot_core_UNIVERSAL(pTHX) | |
1406 | { | |
1407 | dVAR; | |
1408 | static const char file[] = __FILE__; | |
7a6ecb12 | 1409 | const struct xsub_details *xsub = details; |
eff5b9d5 NC |
1410 | const struct xsub_details *end |
1411 | = details + sizeof(details) / sizeof(details[0]); | |
1412 | ||
1413 | do { | |
1414 | newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0); | |
1415 | } while (++xsub < end); | |
1416 | ||
eff5b9d5 | 1417 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
bad4ae38 FC |
1418 | { |
1419 | CV * const cv = | |
1420 | newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL); | |
1421 | Safefree(CvFILE(cv)); | |
1422 | CvFILE(cv) = (char *)file; | |
1423 | CvDYNFILE_off(cv); | |
1424 | } | |
eff5b9d5 | 1425 | } |
80305961 | 1426 | |
241d1a3b NC |
1427 | /* |
1428 | * Local variables: | |
1429 | * c-indentation-style: bsd | |
1430 | * c-basic-offset: 4 | |
14d04a33 | 1431 | * indent-tabs-mode: nil |
241d1a3b NC |
1432 | * End: |
1433 | * | |
14d04a33 | 1434 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 1435 | */ |