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; | |
d70bfb04 JL |
163 | if (!SvOBJECT(sv)) |
164 | return FALSE; | |
165 | stash = SvSTASH(sv); | |
55497cff | 166 | } |
167 | else { | |
da51bb9b | 168 | stash = gv_stashsv(sv, 0); |
55497cff | 169 | } |
46e4b22b | 170 | |
d70bfb04 JL |
171 | if (stash && isa_lookup(stash, name, len, flags)) |
172 | return TRUE; | |
173 | ||
174 | stash = gv_stashpvs("UNIVERSAL", 0); | |
175 | return stash && isa_lookup(stash, name, len, flags); | |
55497cff | 176 | } |
177 | ||
cbc021f9 | 178 | /* |
d20c2c29 | 179 | =for apidoc sv_does_sv |
cbc021f9 | 180 | |
181 | Returns a boolean indicating whether the SV performs a specific, named role. | |
182 | The SV can be a Perl object or the name of a Perl class. | |
183 | ||
184 | =cut | |
185 | */ | |
186 | ||
1b026014 NIS |
187 | #include "XSUB.h" |
188 | ||
cbc021f9 | 189 | bool |
f778bcfd | 190 | Perl_sv_does_sv(pTHX_ SV *sv, SV *namesv, U32 flags) |
cbc021f9 | 191 | { |
f778bcfd | 192 | SV *classname; |
cbc021f9 | 193 | bool does_it; |
59e7186f | 194 | SV *methodname; |
cbc021f9 | 195 | dSP; |
7918f24d | 196 | |
f778bcfd BF |
197 | PERL_ARGS_ASSERT_SV_DOES_SV; |
198 | PERL_UNUSED_ARG(flags); | |
7918f24d | 199 | |
cbc021f9 | 200 | ENTER; |
201 | SAVETMPS; | |
202 | ||
203 | SvGETMAGIC(sv); | |
204 | ||
d96ab1b5 | 205 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) { |
7ce46f2a | 206 | LEAVE; |
cbc021f9 | 207 | return FALSE; |
7ce46f2a | 208 | } |
cbc021f9 | 209 | |
210 | if (sv_isobject(sv)) { | |
f778bcfd | 211 | classname = sv_ref(NULL,SvRV(sv),TRUE); |
cbc021f9 | 212 | } else { |
f778bcfd | 213 | classname = sv; |
cbc021f9 | 214 | } |
215 | ||
f778bcfd | 216 | if (sv_eq(classname, namesv)) { |
7ce46f2a | 217 | LEAVE; |
cbc021f9 | 218 | return TRUE; |
7ce46f2a | 219 | } |
cbc021f9 | 220 | |
221 | PUSHMARK(SP); | |
f778bcfd BF |
222 | EXTEND(SP, 2); |
223 | PUSHs(sv); | |
224 | PUSHs(namesv); | |
cbc021f9 | 225 | PUTBACK; |
226 | ||
84bafc02 | 227 | methodname = newSVpvs_flags("isa", SVs_TEMP); |
59e7186f RGS |
228 | /* ugly hack: use the SvSCREAM flag so S_method_common |
229 | * can figure out we're calling DOES() and not isa(), | |
230 | * and report eventual errors correctly. --rgs */ | |
231 | SvSCREAM_on(methodname); | |
232 | call_sv(methodname, G_SCALAR | G_METHOD); | |
cbc021f9 | 233 | SPAGAIN; |
234 | ||
235 | does_it = SvTRUE( TOPs ); | |
236 | FREETMPS; | |
237 | LEAVE; | |
238 | ||
239 | return does_it; | |
240 | } | |
241 | ||
afa74d42 | 242 | /* |
f778bcfd BF |
243 | =for apidoc sv_does |
244 | ||
d20c2c29 | 245 | Like L</sv_does_pv>, but doesn't take a C<flags> parameter. |
f778bcfd BF |
246 | |
247 | =cut | |
248 | */ | |
249 | ||
250 | bool | |
251 | Perl_sv_does(pTHX_ SV *sv, const char *const name) | |
252 | { | |
253 | PERL_ARGS_ASSERT_SV_DOES; | |
254 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP), 0); | |
255 | } | |
256 | ||
257 | /* | |
258 | =for apidoc sv_does_pv | |
259 | ||
7d892b8c | 260 | Like L</sv_does_sv>, but takes a nul-terminated string instead of an SV. |
f778bcfd BF |
261 | |
262 | =cut | |
263 | */ | |
264 | ||
265 | ||
266 | bool | |
267 | Perl_sv_does_pv(pTHX_ SV *sv, const char *const name, U32 flags) | |
268 | { | |
269 | PERL_ARGS_ASSERT_SV_DOES_PV; | |
270 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP | flags), flags); | |
271 | } | |
272 | ||
7d892b8c FC |
273 | /* |
274 | =for apidoc sv_does_pvn | |
275 | ||
276 | Like L</sv_does_sv>, but takes a string/length pair instead of an SV. | |
277 | ||
278 | =cut | |
279 | */ | |
280 | ||
f778bcfd BF |
281 | bool |
282 | Perl_sv_does_pvn(pTHX_ SV *sv, const char *const name, const STRLEN len, U32 flags) | |
283 | { | |
284 | PERL_ARGS_ASSERT_SV_DOES_PVN; | |
285 | ||
286 | return sv_does_sv(sv, newSVpvn_flags(name, len, flags | SVs_TEMP), flags); | |
287 | } | |
288 | ||
289 | /* | |
afa74d42 NC |
290 | =for apidoc croak_xs_usage |
291 | ||
292 | A specialised variant of C<croak()> for emitting the usage message for xsubs | |
293 | ||
294 | croak_xs_usage(cv, "eee_yow"); | |
295 | ||
296 | works out the package name and subroutine name from C<cv>, and then calls | |
297 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: | |
298 | ||
58cb15b3 | 299 | Perl_croak(aTHX_ "Usage: %"SVf"::%"SVf"(%s)", "ouch" "awk", "eee_yow"); |
afa74d42 NC |
300 | |
301 | =cut | |
302 | */ | |
303 | ||
304 | void | |
cb077ed2 | 305 | Perl_croak_xs_usage(const CV *const cv, const char *const params) |
afa74d42 NC |
306 | { |
307 | const GV *const gv = CvGV(cv); | |
308 | ||
309 | PERL_ARGS_ASSERT_CROAK_XS_USAGE; | |
310 | ||
311 | if (gv) { | |
afa74d42 | 312 | const HV *const stash = GvSTASH(gv); |
afa74d42 | 313 | |
58cb15b3 | 314 | if (HvNAME_get(stash)) |
cb077ed2 | 315 | Perl_croak_nocontext("Usage: %"HEKf"::%"HEKf"(%s)", |
d0c0e7dd FC |
316 | HEKfARG(HvNAME_HEK(stash)), |
317 | HEKfARG(GvNAME_HEK(gv)), | |
58cb15b3 | 318 | params); |
afa74d42 | 319 | else |
cb077ed2 | 320 | Perl_croak_nocontext("Usage: %"HEKf"(%s)", |
d0c0e7dd | 321 | HEKfARG(GvNAME_HEK(gv)), params); |
afa74d42 NC |
322 | } else { |
323 | /* Pants. I don't think that it should be possible to get here. */ | |
cb077ed2 | 324 | Perl_croak_nocontext("Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params); |
afa74d42 NC |
325 | } |
326 | } | |
55497cff | 327 | |
6d4a7be2 | 328 | XS(XS_UNIVERSAL_isa) |
329 | { | |
97aff369 | 330 | dVAR; |
6d4a7be2 | 331 | dXSARGS; |
6d4a7be2 | 332 | |
333 | if (items != 2) | |
afa74d42 | 334 | croak_xs_usage(cv, "reference, kind"); |
c4420975 AL |
335 | else { |
336 | SV * const sv = ST(0); | |
6d4a7be2 | 337 | |
c4420975 | 338 | SvGETMAGIC(sv); |
d3f7f2b2 | 339 | |
d96ab1b5 | 340 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) |
c4420975 | 341 | XSRETURN_UNDEF; |
f8f70380 | 342 | |
c7abbf64 | 343 | ST(0) = boolSV(sv_derived_from_sv(sv, ST(1), 0)); |
c4420975 AL |
344 | XSRETURN(1); |
345 | } | |
6d4a7be2 | 346 | } |
347 | ||
6d4a7be2 | 348 | XS(XS_UNIVERSAL_can) |
349 | { | |
97aff369 | 350 | dVAR; |
6d4a7be2 | 351 | dXSARGS; |
352 | SV *sv; | |
6d4a7be2 | 353 | SV *rv; |
6f08146e | 354 | HV *pkg = NULL; |
2bde9ae6 | 355 | GV *iogv; |
6d4a7be2 | 356 | |
357 | if (items != 2) | |
afa74d42 | 358 | croak_xs_usage(cv, "object-ref, method"); |
6d4a7be2 | 359 | |
360 | sv = ST(0); | |
f8f70380 | 361 | |
5b295bef | 362 | SvGETMAGIC(sv); |
d3f7f2b2 | 363 | |
4178f891 FC |
364 | /* Reject undef and empty string. Note that the string form takes |
365 | precedence here over the numeric form, as (!1)->foo treats the | |
366 | invocant as the empty string, though it is a dualvar. */ | |
367 | if (!SvOK(sv) || (SvPOK(sv) && !SvCUR(sv))) | |
f8f70380 GS |
368 | XSRETURN_UNDEF; |
369 | ||
3280af22 | 370 | rv = &PL_sv_undef; |
6d4a7be2 | 371 | |
46e4b22b | 372 | if (SvROK(sv)) { |
daba3364 | 373 | sv = MUTABLE_SV(SvRV(sv)); |
46e4b22b | 374 | if (SvOBJECT(sv)) |
6f08146e | 375 | pkg = SvSTASH(sv); |
4178f891 FC |
376 | else if (isGV_with_GP(sv) && GvIO(sv)) |
377 | pkg = SvSTASH(GvIO(sv)); | |
6f08146e | 378 | } |
4178f891 FC |
379 | else if (isGV_with_GP(sv) && GvIO(sv)) |
380 | pkg = SvSTASH(GvIO(sv)); | |
2bde9ae6 FC |
381 | else if ((iogv = gv_fetchsv_nomg(sv, 0, SVt_PVIO)) && GvIO(iogv)) |
382 | pkg = SvSTASH(GvIO(iogv)); | |
6f08146e | 383 | else { |
da51bb9b | 384 | pkg = gv_stashsv(sv, 0); |
68b40612 JL |
385 | if (!pkg) |
386 | pkg = gv_stashpv("UNIVERSAL", 0); | |
6f08146e NIS |
387 | } |
388 | ||
389 | if (pkg) { | |
a00b390b | 390 | GV * const gv = gv_fetchmethod_sv_flags(pkg, ST(1), 0); |
dc848c6f | 391 | if (gv && isGV(gv)) |
daba3364 | 392 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
6d4a7be2 | 393 | } |
394 | ||
395 | ST(0) = rv; | |
396 | XSRETURN(1); | |
397 | } | |
398 | ||
cbc021f9 | 399 | XS(XS_UNIVERSAL_DOES) |
400 | { | |
401 | dVAR; | |
402 | dXSARGS; | |
58c0efa5 | 403 | PERL_UNUSED_ARG(cv); |
cbc021f9 | 404 | |
405 | if (items != 2) | |
46404226 | 406 | Perl_croak(aTHX_ "Usage: invocant->DOES(kind)"); |
cbc021f9 | 407 | else { |
408 | SV * const sv = ST(0); | |
f778bcfd | 409 | if (sv_does_sv( sv, ST(1), 0 )) |
cbc021f9 | 410 | XSRETURN_YES; |
411 | ||
412 | XSRETURN_NO; | |
413 | } | |
414 | } | |
415 | ||
6d4a7be2 | 416 | XS(XS_UNIVERSAL_VERSION) |
417 | { | |
97aff369 | 418 | dVAR; |
6d4a7be2 | 419 | dXSARGS; |
420 | HV *pkg; | |
421 | GV **gvp; | |
422 | GV *gv; | |
423 | SV *sv; | |
e1ec3a88 | 424 | const char *undef; |
58c0efa5 | 425 | PERL_UNUSED_ARG(cv); |
6d4a7be2 | 426 | |
1571675a | 427 | if (SvROK(ST(0))) { |
daba3364 | 428 | sv = MUTABLE_SV(SvRV(ST(0))); |
1571675a | 429 | if (!SvOBJECT(sv)) |
cea2e8a9 | 430 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 431 | pkg = SvSTASH(sv); |
432 | } | |
433 | else { | |
da51bb9b | 434 | pkg = gv_stashsv(ST(0), 0); |
6d4a7be2 | 435 | } |
436 | ||
4608196e | 437 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
6d4a7be2 | 438 | |
0008872a | 439 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
a97f6d14 JP |
440 | SV * const nsv = sv_newmortal(); |
441 | sv_setsv(nsv, sv); | |
442 | sv = nsv; | |
573a19fb | 443 | if ( !sv_isobject(sv) || !sv_derived_from(sv, "version")) |
a97f6d14 JP |
444 | upg_version(sv, FALSE); |
445 | ||
c445ea15 | 446 | undef = NULL; |
6d4a7be2 | 447 | } |
448 | else { | |
a97f6d14 | 449 | sv = &PL_sv_undef; |
6d4a7be2 | 450 | undef = "(undef)"; |
451 | } | |
452 | ||
1571675a | 453 | if (items > 1) { |
1571675a GS |
454 | SV *req = ST(1); |
455 | ||
62658f4d | 456 | if (undef) { |
bfcb3514 | 457 | if (pkg) { |
d0c0e7dd | 458 | const HEK * const name = HvNAME_HEK(pkg); |
a3b680e6 | 459 | Perl_croak(aTHX_ |
d0c0e7dd FC |
460 | "%"HEKf" does not define $%"HEKf |
461 | "::VERSION--version check failed", | |
462 | HEKfARG(name), HEKfARG(name)); | |
bfcb3514 | 463 | } else { |
a3b680e6 | 464 | Perl_croak(aTHX_ |
ed1db70e BF |
465 | "%"SVf" defines neither package nor VERSION--version check failed", |
466 | SVfARG(ST(0)) ); | |
62658f4d PM |
467 | } |
468 | } | |
ad63d80f | 469 | |
573a19fb | 470 | if ( !sv_isobject(req) || !sv_derived_from(req, "version")) { |
137d6fc0 | 471 | /* req may very well be R/O, so create a new object */ |
ac0e6a2f | 472 | req = sv_2mortal( new_version(req) ); |
137d6fc0 | 473 | } |
1571675a | 474 | |
ac0e6a2f | 475 | if ( vcmp( req, sv ) > 0 ) { |
ef8f7699 | 476 | if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) { |
d0c0e7dd | 477 | Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--" |
ed1db70e | 478 | "this is only version %"SVf"", |
d0c0e7dd | 479 | HEKfARG(HvNAME_HEK(pkg)), |
e3a22e3f GF |
480 | SVfARG(sv_2mortal(vnormal(req))), |
481 | SVfARG(sv_2mortal(vnormal(sv)))); | |
ac0e6a2f | 482 | } else { |
d0c0e7dd | 483 | Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--" |
ed1db70e | 484 | "this is only version %"SVf, |
d0c0e7dd | 485 | HEKfARG(HvNAME_HEK(pkg)), |
e3a22e3f GF |
486 | SVfARG(sv_2mortal(vstringify(req))), |
487 | SVfARG(sv_2mortal(vstringify(sv)))); | |
ac0e6a2f RGS |
488 | } |
489 | } | |
490 | ||
2d8e6c8d | 491 | } |
6d4a7be2 | 492 | |
a97f6d14 JP |
493 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
494 | ST(0) = sv_2mortal(vstringify(sv)); | |
495 | } else { | |
496 | ST(0) = sv; | |
497 | } | |
6d4a7be2 | 498 | |
499 | XSRETURN(1); | |
500 | } | |
501 | ||
439cb1c4 JP |
502 | XS(XS_version_new) |
503 | { | |
97aff369 | 504 | dVAR; |
439cb1c4 | 505 | dXSARGS; |
b2a8d771 | 506 | if (items > 3 || items < 1) |
afa74d42 | 507 | croak_xs_usage(cv, "class, version"); |
439cb1c4 JP |
508 | SP -= items; |
509 | { | |
137d6fc0 JP |
510 | SV *vs = ST(1); |
511 | SV *rv; | |
ed1db70e BF |
512 | STRLEN len; |
513 | const char *classname; | |
514 | U32 flags; | |
0c1d6ad7 JP |
515 | |
516 | /* Just in case this is something like a tied hash */ | |
517 | SvGETMAGIC(vs); | |
518 | ||
ed1db70e BF |
519 | if ( sv_isobject(ST(0)) ) { /* get the class if called as an object method */ |
520 | const HV * stash = SvSTASH(SvRV(ST(0))); | |
521 | classname = HvNAME(stash); | |
522 | len = HvNAMELEN(stash); | |
523 | flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0; | |
524 | } | |
525 | else { | |
526 | classname = SvPV(ST(0), len); | |
527 | flags = SvUTF8(ST(0)); | |
528 | } | |
9137345a | 529 | |
91152fc1 | 530 | if ( items == 1 || ! SvOK(vs) ) { /* no param or explicit undef */ |
92dcf8ce JP |
531 | /* create empty object */ |
532 | vs = sv_newmortal(); | |
be5574c0 | 533 | sv_setpvs(vs, "0"); |
9137345a JP |
534 | } |
535 | else if ( items == 3 ) { | |
536 | vs = sv_newmortal(); | |
cfd0369c | 537 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd | 538 | } |
439cb1c4 | 539 | |
137d6fc0 | 540 | rv = new_version(vs); |
ed1db70e BF |
541 | if ( strnNE(classname,"version", len) ) /* inherited new() */ |
542 | sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags)); | |
137d6fc0 | 543 | |
6e449a3a | 544 | mPUSHs(rv); |
439cb1c4 JP |
545 | PUTBACK; |
546 | return; | |
547 | } | |
548 | } | |
549 | ||
550 | XS(XS_version_stringify) | |
551 | { | |
97aff369 | 552 | dVAR; |
41be1fbd JH |
553 | dXSARGS; |
554 | if (items < 1) | |
afa74d42 | 555 | croak_xs_usage(cv, "lobj, ..."); |
41be1fbd JH |
556 | SP -= items; |
557 | { | |
d808b681 | 558 | SV * lobj = ST(0); |
41be1fbd | 559 | |
573a19fb | 560 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 561 | lobj = SvRV(lobj); |
41be1fbd JH |
562 | } |
563 | else | |
564 | Perl_croak(aTHX_ "lobj is not of type version"); | |
565 | ||
6e449a3a | 566 | mPUSHs(vstringify(lobj)); |
41be1fbd JH |
567 | |
568 | PUTBACK; | |
569 | return; | |
570 | } | |
439cb1c4 JP |
571 | } |
572 | ||
573 | XS(XS_version_numify) | |
574 | { | |
97aff369 | 575 | dVAR; |
41be1fbd JH |
576 | dXSARGS; |
577 | if (items < 1) | |
afa74d42 | 578 | croak_xs_usage(cv, "lobj, ..."); |
41be1fbd JH |
579 | SP -= items; |
580 | { | |
d808b681 | 581 | SV * lobj = ST(0); |
41be1fbd | 582 | |
573a19fb | 583 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 584 | lobj = SvRV(lobj); |
41be1fbd JH |
585 | } |
586 | else | |
587 | Perl_croak(aTHX_ "lobj is not of type version"); | |
588 | ||
6e449a3a | 589 | mPUSHs(vnumify(lobj)); |
41be1fbd JH |
590 | |
591 | PUTBACK; | |
592 | return; | |
593 | } | |
439cb1c4 JP |
594 | } |
595 | ||
9137345a JP |
596 | XS(XS_version_normal) |
597 | { | |
97aff369 | 598 | dVAR; |
9137345a JP |
599 | dXSARGS; |
600 | if (items < 1) | |
afa74d42 | 601 | croak_xs_usage(cv, "lobj, ..."); |
9137345a JP |
602 | SP -= items; |
603 | { | |
d808b681 | 604 | SV * lobj = ST(0); |
9137345a | 605 | |
573a19fb | 606 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 607 | lobj = SvRV(lobj); |
9137345a JP |
608 | } |
609 | else | |
610 | Perl_croak(aTHX_ "lobj is not of type version"); | |
611 | ||
6e449a3a | 612 | mPUSHs(vnormal(lobj)); |
9137345a JP |
613 | |
614 | PUTBACK; | |
615 | return; | |
616 | } | |
617 | } | |
618 | ||
439cb1c4 JP |
619 | XS(XS_version_vcmp) |
620 | { | |
97aff369 | 621 | dVAR; |
41be1fbd JH |
622 | dXSARGS; |
623 | if (items < 1) | |
afa74d42 | 624 | croak_xs_usage(cv, "lobj, ..."); |
41be1fbd JH |
625 | SP -= items; |
626 | { | |
d808b681 | 627 | SV * lobj = ST(0); |
41be1fbd | 628 | |
573a19fb | 629 | if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) { |
d808b681 | 630 | lobj = SvRV(lobj); |
41be1fbd JH |
631 | } |
632 | else | |
633 | Perl_croak(aTHX_ "lobj is not of type version"); | |
634 | ||
635 | { | |
636 | SV *rs; | |
637 | SV *rvs; | |
638 | SV * robj = ST(1); | |
7452cf6a | 639 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd | 640 | |
573a19fb | 641 | if ( !sv_isobject(robj) || !sv_derived_from(robj, "version") ) |
41be1fbd | 642 | { |
e3a22e3f GF |
643 | robj = new_version(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP)); |
644 | sv_2mortal(robj); | |
41be1fbd JH |
645 | } |
646 | rvs = SvRV(robj); | |
647 | ||
648 | if ( swap ) | |
649 | { | |
650 | rs = newSViv(vcmp(rvs,lobj)); | |
651 | } | |
652 | else | |
653 | { | |
654 | rs = newSViv(vcmp(lobj,rvs)); | |
655 | } | |
656 | ||
6e449a3a | 657 | mPUSHs(rs); |
41be1fbd JH |
658 | } |
659 | ||
660 | PUTBACK; | |
661 | return; | |
662 | } | |
439cb1c4 JP |
663 | } |
664 | ||
665 | XS(XS_version_boolean) | |
666 | { | |
97aff369 JH |
667 | dVAR; |
668 | dXSARGS; | |
669 | if (items < 1) | |
afa74d42 | 670 | croak_xs_usage(cv, "lobj, ..."); |
97aff369 | 671 | SP -= items; |
573a19fb | 672 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) { |
c4420975 | 673 | SV * const lobj = SvRV(ST(0)); |
bcb2959f FC |
674 | SV * const rs = |
675 | newSViv( vcmp(lobj, | |
676 | sv_2mortal(new_version( | |
677 | sv_2mortal(newSVpvs("0")) | |
678 | )) | |
679 | ) | |
680 | ); | |
6e449a3a | 681 | mPUSHs(rs); |
c4420975 AL |
682 | PUTBACK; |
683 | return; | |
684 | } | |
685 | else | |
686 | Perl_croak(aTHX_ "lobj is not of type version"); | |
439cb1c4 JP |
687 | } |
688 | ||
689 | XS(XS_version_noop) | |
690 | { | |
97aff369 | 691 | dVAR; |
2dfd8427 AL |
692 | dXSARGS; |
693 | if (items < 1) | |
afa74d42 | 694 | croak_xs_usage(cv, "lobj, ..."); |
573a19fb | 695 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) |
2dfd8427 AL |
696 | Perl_croak(aTHX_ "operation not supported with version object"); |
697 | else | |
698 | Perl_croak(aTHX_ "lobj is not of type version"); | |
699 | #ifndef HASATTRIBUTE_NORETURN | |
700 | XSRETURN_EMPTY; | |
701 | #endif | |
439cb1c4 JP |
702 | } |
703 | ||
c8d69e4a JP |
704 | XS(XS_version_is_alpha) |
705 | { | |
97aff369 | 706 | dVAR; |
c8d69e4a JP |
707 | dXSARGS; |
708 | if (items != 1) | |
afa74d42 | 709 | croak_xs_usage(cv, "lobj"); |
c8d69e4a | 710 | SP -= items; |
573a19fb | 711 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) { |
c4420975 | 712 | SV * const lobj = ST(0); |
ef8f7699 | 713 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) ) |
c4420975 AL |
714 | XSRETURN_YES; |
715 | else | |
716 | XSRETURN_NO; | |
c8d69e4a JP |
717 | PUTBACK; |
718 | return; | |
719 | } | |
c4420975 AL |
720 | else |
721 | Perl_croak(aTHX_ "lobj is not of type version"); | |
c8d69e4a JP |
722 | } |
723 | ||
137d6fc0 JP |
724 | XS(XS_version_qv) |
725 | { | |
97aff369 | 726 | dVAR; |
137d6fc0 | 727 | dXSARGS; |
4ed3fda4 | 728 | PERL_UNUSED_ARG(cv); |
137d6fc0 JP |
729 | SP -= items; |
730 | { | |
f941e658 JP |
731 | SV * ver = ST(0); |
732 | SV * rv; | |
ed1db70e BF |
733 | STRLEN len = 0; |
734 | const char * classname = ""; | |
735 | U32 flags = 0; | |
0c1d6ad7 JP |
736 | if ( items == 2 ) { |
737 | SvGETMAGIC(ST(1)); | |
738 | if (SvOK(ST(1))) { | |
739 | ver = ST(1); | |
740 | } | |
741 | else { | |
742 | Perl_croak(aTHX_ "Invalid version format (version required)"); | |
743 | } | |
ed1db70e BF |
744 | if ( sv_isobject(ST(0)) ) { /* class called as an object method */ |
745 | const HV * stash = SvSTASH(SvRV(ST(0))); | |
746 | classname = HvNAME(stash); | |
747 | len = HvNAMELEN(stash); | |
748 | flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0; | |
749 | } | |
750 | else { | |
751 | classname = SvPV(ST(0), len); | |
752 | flags = SvUTF8(ST(0)); | |
753 | } | |
754 | } | |
f941e658 JP |
755 | if ( !SvVOK(ver) ) { /* not already a v-string */ |
756 | rv = sv_newmortal(); | |
ac0e6a2f RGS |
757 | sv_setsv(rv,ver); /* make a duplicate */ |
758 | upg_version(rv, TRUE); | |
f941e658 JP |
759 | } else { |
760 | rv = sv_2mortal(new_version(ver)); | |
137d6fc0 | 761 | } |
ed1db70e BF |
762 | if ( items == 2 |
763 | && strnNE(classname,"version", len) ) { /* inherited new() */ | |
764 | sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags)); | |
765 | } | |
f941e658 JP |
766 | PUSHs(rv); |
767 | } | |
768 | PUTBACK; | |
769 | return; | |
770 | } | |
137d6fc0 | 771 | |
f941e658 JP |
772 | XS(XS_version_is_qv) |
773 | { | |
774 | dVAR; | |
775 | dXSARGS; | |
776 | if (items != 1) | |
777 | croak_xs_usage(cv, "lobj"); | |
778 | SP -= items; | |
573a19fb | 779 | if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) { |
f941e658 JP |
780 | SV * const lobj = ST(0); |
781 | if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) ) | |
782 | XSRETURN_YES; | |
783 | else | |
784 | XSRETURN_NO; | |
137d6fc0 JP |
785 | PUTBACK; |
786 | return; | |
787 | } | |
f941e658 JP |
788 | else |
789 | Perl_croak(aTHX_ "lobj is not of type version"); | |
137d6fc0 JP |
790 | } |
791 | ||
8800c35a JH |
792 | XS(XS_utf8_is_utf8) |
793 | { | |
97aff369 | 794 | dVAR; |
41be1fbd JH |
795 | dXSARGS; |
796 | if (items != 1) | |
afa74d42 | 797 | croak_xs_usage(cv, "sv"); |
c4420975 | 798 | else { |
76f73021 GF |
799 | SV * const sv = ST(0); |
800 | SvGETMAGIC(sv); | |
c4420975 AL |
801 | if (SvUTF8(sv)) |
802 | XSRETURN_YES; | |
803 | else | |
804 | XSRETURN_NO; | |
41be1fbd JH |
805 | } |
806 | XSRETURN_EMPTY; | |
8800c35a JH |
807 | } |
808 | ||
1b026014 NIS |
809 | XS(XS_utf8_valid) |
810 | { | |
97aff369 | 811 | dVAR; |
41be1fbd JH |
812 | dXSARGS; |
813 | if (items != 1) | |
afa74d42 | 814 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
815 | else { |
816 | SV * const sv = ST(0); | |
817 | STRLEN len; | |
818 | const char * const s = SvPV_const(sv,len); | |
819 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
820 | XSRETURN_YES; | |
821 | else | |
822 | XSRETURN_NO; | |
823 | } | |
41be1fbd | 824 | XSRETURN_EMPTY; |
1b026014 NIS |
825 | } |
826 | ||
827 | XS(XS_utf8_encode) | |
828 | { | |
97aff369 | 829 | dVAR; |
1b026014 NIS |
830 | dXSARGS; |
831 | if (items != 1) | |
afa74d42 | 832 | croak_xs_usage(cv, "sv"); |
c4420975 | 833 | sv_utf8_encode(ST(0)); |
892f9127 | 834 | SvSETMAGIC(ST(0)); |
1b026014 NIS |
835 | XSRETURN_EMPTY; |
836 | } | |
837 | ||
838 | XS(XS_utf8_decode) | |
839 | { | |
97aff369 | 840 | dVAR; |
1b026014 NIS |
841 | dXSARGS; |
842 | if (items != 1) | |
afa74d42 | 843 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
844 | else { |
845 | SV * const sv = ST(0); | |
b2b7346b | 846 | bool RETVAL; |
c7102404 | 847 | SvPV_force_nolen(sv); |
b2b7346b | 848 | RETVAL = sv_utf8_decode(sv); |
77fc86ef | 849 | SvSETMAGIC(sv); |
1b026014 | 850 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
851 | } |
852 | XSRETURN(1); | |
853 | } | |
854 | ||
855 | XS(XS_utf8_upgrade) | |
856 | { | |
97aff369 | 857 | dVAR; |
1b026014 NIS |
858 | dXSARGS; |
859 | if (items != 1) | |
afa74d42 | 860 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
861 | else { |
862 | SV * const sv = ST(0); | |
1b026014 NIS |
863 | STRLEN RETVAL; |
864 | dXSTARG; | |
865 | ||
866 | RETVAL = sv_utf8_upgrade(sv); | |
867 | XSprePUSH; PUSHi((IV)RETVAL); | |
868 | } | |
869 | XSRETURN(1); | |
870 | } | |
871 | ||
872 | XS(XS_utf8_downgrade) | |
873 | { | |
97aff369 | 874 | dVAR; |
1b026014 NIS |
875 | dXSARGS; |
876 | if (items < 1 || items > 2) | |
afa74d42 | 877 | croak_xs_usage(cv, "sv, failok=0"); |
c4420975 AL |
878 | else { |
879 | SV * const sv = ST(0); | |
6867be6d AL |
880 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
881 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 882 | |
1b026014 | 883 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
884 | } |
885 | XSRETURN(1); | |
886 | } | |
887 | ||
888 | XS(XS_utf8_native_to_unicode) | |
889 | { | |
97aff369 | 890 | dVAR; |
1b026014 | 891 | dXSARGS; |
6867be6d | 892 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
893 | |
894 | if (items > 1) | |
afa74d42 | 895 | croak_xs_usage(cv, "sv"); |
b7953727 | 896 | |
1b026014 NIS |
897 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
898 | XSRETURN(1); | |
899 | } | |
900 | ||
901 | XS(XS_utf8_unicode_to_native) | |
902 | { | |
97aff369 | 903 | dVAR; |
1b026014 | 904 | dXSARGS; |
6867be6d | 905 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
906 | |
907 | if (items > 1) | |
afa74d42 | 908 | croak_xs_usage(cv, "sv"); |
b7953727 | 909 | |
1b026014 NIS |
910 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
911 | XSRETURN(1); | |
912 | } | |
913 | ||
14a976d6 | 914 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 | 915 | { |
97aff369 | 916 | dVAR; |
29569577 | 917 | dXSARGS; |
80b6a949 AB |
918 | SV * const svz = ST(0); |
919 | SV * sv; | |
58c0efa5 | 920 | PERL_UNUSED_ARG(cv); |
6867be6d | 921 | |
80b6a949 AB |
922 | /* [perl #77776] - called as &foo() not foo() */ |
923 | if (!SvROK(svz)) | |
924 | croak_xs_usage(cv, "SCALAR[, ON]"); | |
925 | ||
926 | sv = SvRV(svz); | |
927 | ||
29569577 | 928 | if (items == 1) { |
1620522e | 929 | if (SvREADONLY(sv)) |
29569577 JH |
930 | XSRETURN_YES; |
931 | else | |
932 | XSRETURN_NO; | |
933 | } | |
934 | else if (items == 2) { | |
935 | if (SvTRUE(ST(1))) { | |
1620522e | 936 | #ifdef PERL_OLD_COPY_ON_WRITE |
3e89ba19 | 937 | if (SvIsCOW(sv)) sv_force_normal(sv); |
1620522e | 938 | #endif |
29569577 | 939 | SvREADONLY_on(sv); |
38be3d00 FC |
940 | if (SvTYPE(sv) == SVt_PVAV && AvFILLp(sv) != -1) { |
941 | /* for constant.pm; nobody else should be calling this | |
942 | on arrays anyway. */ | |
943 | SV **svp; | |
944 | for (svp = AvARRAY(sv) + AvFILLp(sv) | |
945 | ; svp >= AvARRAY(sv) | |
946 | ; --svp) | |
947 | if (*svp) SvPADTMP_on(*svp); | |
948 | } | |
29569577 JH |
949 | XSRETURN_YES; |
950 | } | |
951 | else { | |
14a976d6 | 952 | /* I hope you really know what you are doing. */ |
1620522e | 953 | SvREADONLY_off(sv); |
29569577 JH |
954 | XSRETURN_NO; |
955 | } | |
956 | } | |
14a976d6 | 957 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 | 958 | } |
14a976d6 | 959 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 | 960 | { |
97aff369 | 961 | dVAR; |
29569577 | 962 | dXSARGS; |
80b6a949 AB |
963 | SV * const svz = ST(0); |
964 | SV * sv; | |
fa3febb6 | 965 | U32 refcnt; |
58c0efa5 | 966 | PERL_UNUSED_ARG(cv); |
6867be6d | 967 | |
80b6a949 | 968 | /* [perl #77776] - called as &foo() not foo() */ |
fa3febb6 | 969 | if ((items != 1 && items != 2) || !SvROK(svz)) |
80b6a949 AB |
970 | croak_xs_usage(cv, "SCALAR[, REFCOUNT]"); |
971 | ||
972 | sv = SvRV(svz); | |
973 | ||
14a976d6 | 974 | /* I hope you really know what you are doing. */ |
fa3febb6 DD |
975 | /* idea is for SvREFCNT(sv) to be accessed only once */ |
976 | refcnt = items == 2 ? | |
977 | /* we free one ref on exit */ | |
978 | (SvREFCNT(sv) = SvUV(ST(1)) + 1) | |
979 | : SvREFCNT(sv); | |
980 | XSRETURN_UV(refcnt - 1); /* Minus the ref created for us. */ | |
981 | ||
29569577 JH |
982 | } |
983 | ||
f044d0d1 | 984 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f | 985 | { |
97aff369 | 986 | dVAR; |
dfd4ef2f | 987 | dXSARGS; |
6867be6d | 988 | |
80b6a949 | 989 | if (items != 1 || !SvROK(ST(0))) |
afa74d42 | 990 | croak_xs_usage(cv, "hv"); |
c4420975 | 991 | else { |
ef8f7699 | 992 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); |
c4420975 AL |
993 | hv_clear_placeholders(hv); |
994 | XSRETURN(0); | |
995 | } | |
dfd4ef2f | 996 | } |
39f7a870 JH |
997 | |
998 | XS(XS_PerlIO_get_layers) | |
999 | { | |
97aff369 | 1000 | dVAR; |
39f7a870 JH |
1001 | dXSARGS; |
1002 | if (items < 1 || items % 2 == 0) | |
afa74d42 | 1003 | croak_xs_usage(cv, "filehandle[,args]"); |
5fef3b4a | 1004 | #ifdef USE_PERLIO |
39f7a870 JH |
1005 | { |
1006 | SV * sv; | |
1007 | GV * gv; | |
1008 | IO * io; | |
1009 | bool input = TRUE; | |
1010 | bool details = FALSE; | |
1011 | ||
1012 | if (items > 1) { | |
c4420975 | 1013 | SV * const *svp; |
39f7a870 | 1014 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
1015 | SV * const * const varp = svp; |
1016 | SV * const * const valp = svp + 1; | |
39f7a870 | 1017 | STRLEN klen; |
c4420975 | 1018 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
1019 | |
1020 | switch (*key) { | |
1021 | case 'i': | |
1022 | if (klen == 5 && memEQ(key, "input", 5)) { | |
1023 | input = SvTRUE(*valp); | |
1024 | break; | |
1025 | } | |
1026 | goto fail; | |
1027 | case 'o': | |
1028 | if (klen == 6 && memEQ(key, "output", 6)) { | |
1029 | input = !SvTRUE(*valp); | |
1030 | break; | |
1031 | } | |
1032 | goto fail; | |
1033 | case 'd': | |
1034 | if (klen == 7 && memEQ(key, "details", 7)) { | |
1035 | details = SvTRUE(*valp); | |
1036 | break; | |
1037 | } | |
1038 | goto fail; | |
1039 | default: | |
1040 | fail: | |
1041 | Perl_croak(aTHX_ | |
1042 | "get_layers: unknown argument '%s'", | |
1043 | key); | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | SP -= (items - 1); | |
1048 | } | |
1049 | ||
1050 | sv = POPs; | |
7f9aa7d3 | 1051 | gv = MAYBE_DEREF_GV(sv); |
39f7a870 | 1052 | |
3825652d | 1053 | if (!gv && !SvROK(sv)) |
7f9aa7d3 | 1054 | gv = gv_fetchsv_nomg(sv, 0, SVt_PVIO); |
39f7a870 JH |
1055 | |
1056 | if (gv && (io = GvIO(gv))) { | |
c4420975 | 1057 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 | 1058 | IoIFP(io) : IoOFP(io)); |
c70927a6 FC |
1059 | SSize_t i; |
1060 | const SSize_t last = av_len(av); | |
1061 | SSize_t nitem = 0; | |
39f7a870 JH |
1062 | |
1063 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
1064 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
1065 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
1066 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 1067 | |
c4420975 AL |
1068 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
1069 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
1070 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 | 1071 | |
2102d7a2 | 1072 | EXTEND(SP, 3); /* Three is the max in all branches: better check just once */ |
39f7a870 | 1073 | if (details) { |
92e45a3e NC |
1074 | /* Indents of 5? Yuck. */ |
1075 | /* We know that PerlIO_get_layers creates a new SV for | |
1076 | the name and flags, so we can just take a reference | |
1077 | and "steal" it when we free the AV below. */ | |
2102d7a2 | 1078 | PUSHs(namok |
92e45a3e | 1079 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
ec3bab8e | 1080 | : &PL_sv_undef); |
2102d7a2 | 1081 | PUSHs(argok |
92e45a3e NC |
1082 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
1083 | SvCUR(*argsvp), | |
1084 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) | |
1085 | | SVs_TEMP) | |
1086 | : &PL_sv_undef); | |
2102d7a2 | 1087 | PUSHs(flgok |
92e45a3e | 1088 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
ec3bab8e | 1089 | : &PL_sv_undef); |
39f7a870 JH |
1090 | nitem += 3; |
1091 | } | |
1092 | else { | |
1093 | if (namok && argok) | |
2102d7a2 | 1094 | PUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
be2597df | 1095 | SVfARG(*namsvp), |
1eb9e81d | 1096 | SVfARG(*argsvp)))); |
39f7a870 | 1097 | else if (namok) |
2102d7a2 | 1098 | PUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
39f7a870 | 1099 | else |
2102d7a2 | 1100 | PUSHs(&PL_sv_undef); |
39f7a870 JH |
1101 | nitem++; |
1102 | if (flgok) { | |
c4420975 | 1103 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
1104 | |
1105 | if (flags & PERLIO_F_UTF8) { | |
2102d7a2 | 1106 | PUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
39f7a870 JH |
1107 | nitem++; |
1108 | } | |
1109 | } | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | SvREFCNT_dec(av); | |
1114 | ||
1115 | XSRETURN(nitem); | |
1116 | } | |
1117 | } | |
5fef3b4a | 1118 | #endif |
39f7a870 JH |
1119 | |
1120 | XSRETURN(0); | |
1121 | } | |
1122 | ||
241d1a3b | 1123 | |
80305961 YO |
1124 | XS(XS_re_is_regexp) |
1125 | { | |
1126 | dVAR; | |
1127 | dXSARGS; | |
f7e71195 AB |
1128 | PERL_UNUSED_VAR(cv); |
1129 | ||
80305961 | 1130 | if (items != 1) |
afa74d42 | 1131 | croak_xs_usage(cv, "sv"); |
f7e71195 | 1132 | |
f7e71195 AB |
1133 | if (SvRXOK(ST(0))) { |
1134 | XSRETURN_YES; | |
1135 | } else { | |
1136 | XSRETURN_NO; | |
80305961 YO |
1137 | } |
1138 | } | |
1139 | ||
192b9cd1 | 1140 | XS(XS_re_regnames_count) |
80305961 | 1141 | { |
192b9cd1 AB |
1142 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
1143 | SV * ret; | |
80305961 YO |
1144 | dVAR; |
1145 | dXSARGS; | |
192b9cd1 AB |
1146 | |
1147 | if (items != 0) | |
afa74d42 | 1148 | croak_xs_usage(cv, ""); |
192b9cd1 AB |
1149 | |
1150 | SP -= items; | |
fdae9473 | 1151 | PUTBACK; |
192b9cd1 AB |
1152 | |
1153 | if (!rx) | |
1154 | XSRETURN_UNDEF; | |
1155 | ||
1156 | ret = CALLREG_NAMED_BUFF_COUNT(rx); | |
1157 | ||
1158 | SPAGAIN; | |
fdae9473 NC |
1159 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); |
1160 | XSRETURN(1); | |
192b9cd1 AB |
1161 | } |
1162 | ||
1163 | XS(XS_re_regname) | |
1164 | { | |
1165 | dVAR; | |
1166 | dXSARGS; | |
1167 | REGEXP * rx; | |
1168 | U32 flags; | |
1169 | SV * ret; | |
1170 | ||
28d8d7f4 | 1171 | if (items < 1 || items > 2) |
afa74d42 | 1172 | croak_xs_usage(cv, "name[, all ]"); |
192b9cd1 | 1173 | |
80305961 | 1174 | SP -= items; |
fdae9473 | 1175 | PUTBACK; |
80305961 | 1176 | |
192b9cd1 AB |
1177 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
1178 | ||
1179 | if (!rx) | |
1180 | XSRETURN_UNDEF; | |
1181 | ||
1182 | if (items == 2 && SvTRUE(ST(1))) { | |
f1b875a0 | 1183 | flags = RXapif_ALL; |
192b9cd1 | 1184 | } else { |
f1b875a0 | 1185 | flags = RXapif_ONE; |
80305961 | 1186 | } |
f1b875a0 | 1187 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
192b9cd1 | 1188 | |
fdae9473 NC |
1189 | SPAGAIN; |
1190 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); | |
1191 | XSRETURN(1); | |
80305961 YO |
1192 | } |
1193 | ||
192b9cd1 | 1194 | |
80305961 YO |
1195 | XS(XS_re_regnames) |
1196 | { | |
192b9cd1 | 1197 | dVAR; |
80305961 | 1198 | dXSARGS; |
192b9cd1 AB |
1199 | REGEXP * rx; |
1200 | U32 flags; | |
1201 | SV *ret; | |
1202 | AV *av; | |
c70927a6 FC |
1203 | SSize_t length; |
1204 | SSize_t i; | |
192b9cd1 AB |
1205 | SV **entry; |
1206 | ||
1207 | if (items > 1) | |
afa74d42 | 1208 | croak_xs_usage(cv, "[all]"); |
192b9cd1 AB |
1209 | |
1210 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; | |
1211 | ||
1212 | if (!rx) | |
1213 | XSRETURN_UNDEF; | |
1214 | ||
1215 | if (items == 1 && SvTRUE(ST(0))) { | |
f1b875a0 | 1216 | flags = RXapif_ALL; |
192b9cd1 | 1217 | } else { |
f1b875a0 | 1218 | flags = RXapif_ONE; |
192b9cd1 AB |
1219 | } |
1220 | ||
80305961 | 1221 | SP -= items; |
fdae9473 | 1222 | PUTBACK; |
80305961 | 1223 | |
f1b875a0 | 1224 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
192b9cd1 AB |
1225 | |
1226 | SPAGAIN; | |
1227 | ||
192b9cd1 AB |
1228 | if (!ret) |
1229 | XSRETURN_UNDEF; | |
1230 | ||
502c6561 | 1231 | av = MUTABLE_AV(SvRV(ret)); |
192b9cd1 AB |
1232 | length = av_len(av); |
1233 | ||
2102d7a2 | 1234 | EXTEND(SP, length+1); /* better extend stack just once */ |
192b9cd1 AB |
1235 | for (i = 0; i <= length; i++) { |
1236 | entry = av_fetch(av, i, FALSE); | |
1237 | ||
1238 | if (!entry) | |
1239 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); | |
1240 | ||
2102d7a2 | 1241 | mPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
80305961 | 1242 | } |
ec83ea38 MHM |
1243 | |
1244 | SvREFCNT_dec(ret); | |
1245 | ||
192b9cd1 AB |
1246 | PUTBACK; |
1247 | return; | |
80305961 YO |
1248 | } |
1249 | ||
192c1e27 JH |
1250 | XS(XS_re_regexp_pattern) |
1251 | { | |
1252 | dVAR; | |
1253 | dXSARGS; | |
1254 | REGEXP *re; | |
192c1e27 | 1255 | |
22d874e2 DD |
1256 | EXTEND(SP, 2); |
1257 | SP -= items; | |
192c1e27 | 1258 | if (items != 1) |
afa74d42 | 1259 | croak_xs_usage(cv, "sv"); |
192c1e27 | 1260 | |
192c1e27 JH |
1261 | /* |
1262 | Checks if a reference is a regex or not. If the parameter is | |
1263 | not a ref, or is not the result of a qr// then returns false | |
1264 | in scalar context and an empty list in list context. | |
1265 | Otherwise in list context it returns the pattern and the | |
1266 | modifiers, in scalar context it returns the pattern just as it | |
1267 | would if the qr// was stringified normally, regardless as | |
486ec47a | 1268 | to the class of the variable and any stringification overloads |
192c1e27 JH |
1269 | on the object. |
1270 | */ | |
1271 | ||
1272 | if ((re = SvRX(ST(0)))) /* assign deliberate */ | |
1273 | { | |
22c985d5 | 1274 | /* Houston, we have a regex! */ |
192c1e27 | 1275 | SV *pattern; |
192c1e27 JH |
1276 | |
1277 | if ( GIMME_V == G_ARRAY ) { | |
9de15fec | 1278 | STRLEN left = 0; |
a62b1201 | 1279 | char reflags[sizeof(INT_PAT_MODS) + MAX_CHARSET_NAME_LENGTH]; |
69af1167 SH |
1280 | const char *fptr; |
1281 | char ch; | |
1282 | U16 match_flags; | |
1283 | ||
192c1e27 JH |
1284 | /* |
1285 | we are in list context so stringify | |
1286 | the modifiers that apply. We ignore "negative | |
a62b1201 | 1287 | modifiers" in this scenario, and the default character set |
192c1e27 JH |
1288 | */ |
1289 | ||
a62b1201 KW |
1290 | if (get_regex_charset(RX_EXTFLAGS(re)) != REGEX_DEPENDS_CHARSET) { |
1291 | STRLEN len; | |
1292 | const char* const name = get_regex_charset_name(RX_EXTFLAGS(re), | |
1293 | &len); | |
1294 | Copy(name, reflags + left, len, char); | |
1295 | left += len; | |
9de15fec | 1296 | } |
69af1167 | 1297 | fptr = INT_PAT_MODS; |
73134a2e | 1298 | match_flags = (U16)((RX_EXTFLAGS(re) & RXf_PMf_COMPILETIME) |
192c1e27 JH |
1299 | >> RXf_PMf_STD_PMMOD_SHIFT); |
1300 | ||
1301 | while((ch = *fptr++)) { | |
1302 | if(match_flags & 1) { | |
1303 | reflags[left++] = ch; | |
1304 | } | |
1305 | match_flags >>= 1; | |
1306 | } | |
1307 | ||
fb632ce3 NC |
1308 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
1309 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 JH |
1310 | |
1311 | /* return the pattern and the modifiers */ | |
2102d7a2 S |
1312 | PUSHs(pattern); |
1313 | PUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); | |
192c1e27 JH |
1314 | XSRETURN(2); |
1315 | } else { | |
1316 | /* Scalar, so use the string that Perl would return */ | |
1317 | /* return the pattern in (?msix:..) format */ | |
1318 | #if PERL_VERSION >= 11 | |
daba3364 | 1319 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
192c1e27 | 1320 | #else |
fb632ce3 NC |
1321 | pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re), |
1322 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 | 1323 | #endif |
22d874e2 | 1324 | PUSHs(pattern); |
192c1e27 JH |
1325 | XSRETURN(1); |
1326 | } | |
1327 | } else { | |
1328 | /* It ain't a regexp folks */ | |
1329 | if ( GIMME_V == G_ARRAY ) { | |
1330 | /* return the empty list */ | |
1331 | XSRETURN_UNDEF; | |
1332 | } else { | |
1333 | /* Because of the (?:..) wrapping involved in a | |
1334 | stringified pattern it is impossible to get a | |
1335 | result for a real regexp that would evaluate to | |
1336 | false. Therefore we can return PL_sv_no to signify | |
1337 | that the object is not a regex, this means that one | |
1338 | can say | |
1339 | ||
1340 | if (regex($might_be_a_regex) eq '(?:foo)') { } | |
1341 | ||
1342 | and not worry about undefined values. | |
1343 | */ | |
1344 | XSRETURN_NO; | |
1345 | } | |
1346 | } | |
1347 | /* NOT-REACHED */ | |
1348 | } | |
1349 | ||
eff5b9d5 NC |
1350 | struct xsub_details { |
1351 | const char *name; | |
1352 | XSUBADDR_t xsub; | |
1353 | const char *proto; | |
1354 | }; | |
1355 | ||
a9b7658f | 1356 | static const struct xsub_details details[] = { |
eff5b9d5 NC |
1357 | {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL}, |
1358 | {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL}, | |
1359 | {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL}, | |
1360 | {"UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, NULL}, | |
1361 | {"version::()", XS_version_noop, NULL}, | |
1362 | {"version::new", XS_version_new, NULL}, | |
1363 | {"version::parse", XS_version_new, NULL}, | |
1364 | {"version::(\"\"", XS_version_stringify, NULL}, | |
1365 | {"version::stringify", XS_version_stringify, NULL}, | |
1366 | {"version::(0+", XS_version_numify, NULL}, | |
1367 | {"version::numify", XS_version_numify, NULL}, | |
1368 | {"version::normal", XS_version_normal, NULL}, | |
1369 | {"version::(cmp", XS_version_vcmp, NULL}, | |
1370 | {"version::(<=>", XS_version_vcmp, NULL}, | |
1371 | {"version::vcmp", XS_version_vcmp, NULL}, | |
1372 | {"version::(bool", XS_version_boolean, NULL}, | |
1373 | {"version::boolean", XS_version_boolean, NULL}, | |
43d9ecf9 JP |
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::(+=", XS_version_noop, NULL}, | |
1379 | {"version::(-=", XS_version_noop, NULL}, | |
1380 | {"version::(*=", XS_version_noop, NULL}, | |
1381 | {"version::(/=", XS_version_noop, NULL}, | |
1382 | {"version::(abs", XS_version_noop, NULL}, | |
eff5b9d5 NC |
1383 | {"version::(nomethod", XS_version_noop, NULL}, |
1384 | {"version::noop", XS_version_noop, NULL}, | |
1385 | {"version::is_alpha", XS_version_is_alpha, NULL}, | |
1386 | {"version::qv", XS_version_qv, NULL}, | |
1387 | {"version::declare", XS_version_qv, NULL}, | |
1388 | {"version::is_qv", XS_version_is_qv, NULL}, | |
1389 | {"utf8::is_utf8", XS_utf8_is_utf8, NULL}, | |
1390 | {"utf8::valid", XS_utf8_valid, NULL}, | |
1391 | {"utf8::encode", XS_utf8_encode, NULL}, | |
1392 | {"utf8::decode", XS_utf8_decode, NULL}, | |
1393 | {"utf8::upgrade", XS_utf8_upgrade, NULL}, | |
1394 | {"utf8::downgrade", XS_utf8_downgrade, NULL}, | |
1395 | {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL}, | |
1396 | {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL}, | |
1397 | {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"}, | |
1398 | {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"}, | |
1399 | {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"}, | |
1400 | {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"}, | |
eff5b9d5 NC |
1401 | {"re::is_regexp", XS_re_is_regexp, "$"}, |
1402 | {"re::regname", XS_re_regname, ";$$"}, | |
1403 | {"re::regnames", XS_re_regnames, ";$"}, | |
1404 | {"re::regnames_count", XS_re_regnames_count, ""}, | |
1405 | {"re::regexp_pattern", XS_re_regexp_pattern, "$"}, | |
eff5b9d5 NC |
1406 | }; |
1407 | ||
1408 | void | |
1409 | Perl_boot_core_UNIVERSAL(pTHX) | |
1410 | { | |
1411 | dVAR; | |
1412 | static const char file[] = __FILE__; | |
7a6ecb12 | 1413 | const struct xsub_details *xsub = details; |
eff5b9d5 NC |
1414 | const struct xsub_details *end |
1415 | = details + sizeof(details) / sizeof(details[0]); | |
1416 | ||
1417 | do { | |
1418 | newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0); | |
1419 | } while (++xsub < end); | |
1420 | ||
eff5b9d5 | 1421 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
bad4ae38 FC |
1422 | { |
1423 | CV * const cv = | |
1424 | newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL); | |
1425 | Safefree(CvFILE(cv)); | |
1426 | CvFILE(cv) = (char *)file; | |
1427 | CvDYNFILE_off(cv); | |
1428 | } | |
eff5b9d5 | 1429 | } |
80305961 | 1430 | |
241d1a3b NC |
1431 | /* |
1432 | * Local variables: | |
1433 | * c-indentation-style: bsd | |
1434 | * c-basic-offset: 4 | |
14d04a33 | 1435 | * indent-tabs-mode: nil |
241d1a3b NC |
1436 | * End: |
1437 | * | |
14d04a33 | 1438 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 1439 | */ |