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 | |
97cb92d6 | 32 | #if defined(USE_PERLIO) |
39f7a870 JH |
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); | |
316ebaf2 | 70 | assert(canon_name); |
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 | |
72d33970 | 297 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: |
afa74d42 | 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)) |
d3ee9aa5 | 315 | /* diag_listed_as: SKIPME */ |
cb077ed2 | 316 | Perl_croak_nocontext("Usage: %"HEKf"::%"HEKf"(%s)", |
d0c0e7dd FC |
317 | HEKfARG(HvNAME_HEK(stash)), |
318 | HEKfARG(GvNAME_HEK(gv)), | |
58cb15b3 | 319 | params); |
afa74d42 | 320 | else |
d3ee9aa5 | 321 | /* diag_listed_as: SKIPME */ |
cb077ed2 | 322 | Perl_croak_nocontext("Usage: %"HEKf"(%s)", |
d0c0e7dd | 323 | HEKfARG(GvNAME_HEK(gv)), params); |
afa74d42 NC |
324 | } else { |
325 | /* Pants. I don't think that it should be possible to get here. */ | |
d3ee9aa5 | 326 | /* diag_listed_as: SKIPME */ |
cb077ed2 | 327 | Perl_croak_nocontext("Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params); |
afa74d42 NC |
328 | } |
329 | } | |
55497cff | 330 | |
15eb3045 | 331 | XS(XS_UNIVERSAL_isa); /* prototype to pass -Wmissing-prototypes */ |
6d4a7be2 | 332 | XS(XS_UNIVERSAL_isa) |
333 | { | |
97aff369 | 334 | dVAR; |
6d4a7be2 | 335 | dXSARGS; |
6d4a7be2 | 336 | |
337 | if (items != 2) | |
afa74d42 | 338 | croak_xs_usage(cv, "reference, kind"); |
c4420975 AL |
339 | else { |
340 | SV * const sv = ST(0); | |
6d4a7be2 | 341 | |
c4420975 | 342 | SvGETMAGIC(sv); |
d3f7f2b2 | 343 | |
d96ab1b5 | 344 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) |
c4420975 | 345 | XSRETURN_UNDEF; |
f8f70380 | 346 | |
c7abbf64 | 347 | ST(0) = boolSV(sv_derived_from_sv(sv, ST(1), 0)); |
c4420975 AL |
348 | XSRETURN(1); |
349 | } | |
6d4a7be2 | 350 | } |
351 | ||
15eb3045 | 352 | XS(XS_UNIVERSAL_can); /* prototype to pass -Wmissing-prototypes */ |
6d4a7be2 | 353 | XS(XS_UNIVERSAL_can) |
354 | { | |
97aff369 | 355 | dVAR; |
6d4a7be2 | 356 | dXSARGS; |
357 | SV *sv; | |
6d4a7be2 | 358 | SV *rv; |
6f08146e | 359 | HV *pkg = NULL; |
2bde9ae6 | 360 | GV *iogv; |
6d4a7be2 | 361 | |
362 | if (items != 2) | |
afa74d42 | 363 | croak_xs_usage(cv, "object-ref, method"); |
6d4a7be2 | 364 | |
365 | sv = ST(0); | |
f8f70380 | 366 | |
5b295bef | 367 | SvGETMAGIC(sv); |
d3f7f2b2 | 368 | |
4178f891 FC |
369 | /* Reject undef and empty string. Note that the string form takes |
370 | precedence here over the numeric form, as (!1)->foo treats the | |
371 | invocant as the empty string, though it is a dualvar. */ | |
372 | if (!SvOK(sv) || (SvPOK(sv) && !SvCUR(sv))) | |
f8f70380 GS |
373 | XSRETURN_UNDEF; |
374 | ||
3280af22 | 375 | rv = &PL_sv_undef; |
6d4a7be2 | 376 | |
46e4b22b | 377 | if (SvROK(sv)) { |
daba3364 | 378 | sv = MUTABLE_SV(SvRV(sv)); |
46e4b22b | 379 | if (SvOBJECT(sv)) |
6f08146e | 380 | pkg = SvSTASH(sv); |
4178f891 FC |
381 | else if (isGV_with_GP(sv) && GvIO(sv)) |
382 | pkg = SvSTASH(GvIO(sv)); | |
6f08146e | 383 | } |
4178f891 FC |
384 | else if (isGV_with_GP(sv) && GvIO(sv)) |
385 | pkg = SvSTASH(GvIO(sv)); | |
2bde9ae6 FC |
386 | else if ((iogv = gv_fetchsv_nomg(sv, 0, SVt_PVIO)) && GvIO(iogv)) |
387 | pkg = SvSTASH(GvIO(iogv)); | |
6f08146e | 388 | else { |
da51bb9b | 389 | pkg = gv_stashsv(sv, 0); |
68b40612 JL |
390 | if (!pkg) |
391 | pkg = gv_stashpv("UNIVERSAL", 0); | |
6f08146e NIS |
392 | } |
393 | ||
394 | if (pkg) { | |
a00b390b | 395 | GV * const gv = gv_fetchmethod_sv_flags(pkg, ST(1), 0); |
dc848c6f | 396 | if (gv && isGV(gv)) |
daba3364 | 397 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
6d4a7be2 | 398 | } |
399 | ||
400 | ST(0) = rv; | |
401 | XSRETURN(1); | |
402 | } | |
403 | ||
15eb3045 | 404 | XS(XS_UNIVERSAL_DOES); /* prototype to pass -Wmissing-prototypes */ |
cbc021f9 | 405 | XS(XS_UNIVERSAL_DOES) |
406 | { | |
407 | dVAR; | |
408 | dXSARGS; | |
58c0efa5 | 409 | PERL_UNUSED_ARG(cv); |
cbc021f9 | 410 | |
411 | if (items != 2) | |
46404226 | 412 | Perl_croak(aTHX_ "Usage: invocant->DOES(kind)"); |
cbc021f9 | 413 | else { |
414 | SV * const sv = ST(0); | |
f778bcfd | 415 | if (sv_does_sv( sv, ST(1), 0 )) |
cbc021f9 | 416 | XSRETURN_YES; |
417 | ||
418 | XSRETURN_NO; | |
419 | } | |
420 | } | |
421 | ||
15eb3045 | 422 | XS(XS_utf8_is_utf8); /* prototype to pass -Wmissing-prototypes */ |
8800c35a JH |
423 | XS(XS_utf8_is_utf8) |
424 | { | |
97aff369 | 425 | dVAR; |
41be1fbd JH |
426 | dXSARGS; |
427 | if (items != 1) | |
afa74d42 | 428 | croak_xs_usage(cv, "sv"); |
c4420975 | 429 | else { |
76f73021 GF |
430 | SV * const sv = ST(0); |
431 | SvGETMAGIC(sv); | |
c4420975 AL |
432 | if (SvUTF8(sv)) |
433 | XSRETURN_YES; | |
434 | else | |
435 | XSRETURN_NO; | |
41be1fbd JH |
436 | } |
437 | XSRETURN_EMPTY; | |
8800c35a JH |
438 | } |
439 | ||
15eb3045 | 440 | XS(XS_utf8_valid); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
441 | XS(XS_utf8_valid) |
442 | { | |
97aff369 | 443 | dVAR; |
41be1fbd JH |
444 | dXSARGS; |
445 | if (items != 1) | |
afa74d42 | 446 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
447 | else { |
448 | SV * const sv = ST(0); | |
449 | STRLEN len; | |
450 | const char * const s = SvPV_const(sv,len); | |
451 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
452 | XSRETURN_YES; | |
453 | else | |
454 | XSRETURN_NO; | |
455 | } | |
41be1fbd | 456 | XSRETURN_EMPTY; |
1b026014 NIS |
457 | } |
458 | ||
15eb3045 | 459 | XS(XS_utf8_encode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
460 | XS(XS_utf8_encode) |
461 | { | |
97aff369 | 462 | dVAR; |
1b026014 NIS |
463 | dXSARGS; |
464 | if (items != 1) | |
afa74d42 | 465 | croak_xs_usage(cv, "sv"); |
c4420975 | 466 | sv_utf8_encode(ST(0)); |
892f9127 | 467 | SvSETMAGIC(ST(0)); |
1b026014 NIS |
468 | XSRETURN_EMPTY; |
469 | } | |
470 | ||
15eb3045 | 471 | XS(XS_utf8_decode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
472 | XS(XS_utf8_decode) |
473 | { | |
97aff369 | 474 | dVAR; |
1b026014 NIS |
475 | dXSARGS; |
476 | if (items != 1) | |
afa74d42 | 477 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
478 | else { |
479 | SV * const sv = ST(0); | |
b2b7346b | 480 | bool RETVAL; |
c7102404 | 481 | SvPV_force_nolen(sv); |
b2b7346b | 482 | RETVAL = sv_utf8_decode(sv); |
77fc86ef | 483 | SvSETMAGIC(sv); |
1b026014 | 484 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
485 | } |
486 | XSRETURN(1); | |
487 | } | |
488 | ||
15eb3045 | 489 | XS(XS_utf8_upgrade); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
490 | XS(XS_utf8_upgrade) |
491 | { | |
97aff369 | 492 | dVAR; |
1b026014 NIS |
493 | dXSARGS; |
494 | if (items != 1) | |
afa74d42 | 495 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
496 | else { |
497 | SV * const sv = ST(0); | |
1b026014 NIS |
498 | STRLEN RETVAL; |
499 | dXSTARG; | |
500 | ||
501 | RETVAL = sv_utf8_upgrade(sv); | |
502 | XSprePUSH; PUSHi((IV)RETVAL); | |
503 | } | |
504 | XSRETURN(1); | |
505 | } | |
506 | ||
15eb3045 | 507 | XS(XS_utf8_downgrade); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
508 | XS(XS_utf8_downgrade) |
509 | { | |
97aff369 | 510 | dVAR; |
1b026014 NIS |
511 | dXSARGS; |
512 | if (items < 1 || items > 2) | |
afa74d42 | 513 | croak_xs_usage(cv, "sv, failok=0"); |
c4420975 AL |
514 | else { |
515 | SV * const sv = ST(0); | |
3ca75eca | 516 | const bool failok = (items < 2) ? 0 : SvTRUE(ST(1)) ? 1 : 0; |
6867be6d | 517 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 | 518 | |
1b026014 | 519 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
520 | } |
521 | XSRETURN(1); | |
522 | } | |
523 | ||
15eb3045 | 524 | XS(XS_utf8_native_to_unicode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
525 | XS(XS_utf8_native_to_unicode) |
526 | { | |
97aff369 | 527 | dVAR; |
1b026014 | 528 | dXSARGS; |
6867be6d | 529 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
530 | |
531 | if (items > 1) | |
afa74d42 | 532 | croak_xs_usage(cv, "sv"); |
b7953727 | 533 | |
1b026014 NIS |
534 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
535 | XSRETURN(1); | |
536 | } | |
537 | ||
15eb3045 | 538 | XS(XS_utf8_unicode_to_native); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
539 | XS(XS_utf8_unicode_to_native) |
540 | { | |
97aff369 | 541 | dVAR; |
1b026014 | 542 | dXSARGS; |
6867be6d | 543 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
544 | |
545 | if (items > 1) | |
afa74d42 | 546 | croak_xs_usage(cv, "sv"); |
b7953727 | 547 | |
1b026014 NIS |
548 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
549 | XSRETURN(1); | |
550 | } | |
551 | ||
15eb3045 | 552 | XS(XS_Internals_SvREADONLY); /* prototype to pass -Wmissing-prototypes */ |
14a976d6 | 553 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 | 554 | { |
97aff369 | 555 | dVAR; |
29569577 | 556 | dXSARGS; |
80b6a949 AB |
557 | SV * const svz = ST(0); |
558 | SV * sv; | |
58c0efa5 | 559 | PERL_UNUSED_ARG(cv); |
6867be6d | 560 | |
80b6a949 AB |
561 | /* [perl #77776] - called as &foo() not foo() */ |
562 | if (!SvROK(svz)) | |
563 | croak_xs_usage(cv, "SCALAR[, ON]"); | |
564 | ||
565 | sv = SvRV(svz); | |
566 | ||
29569577 | 567 | if (items == 1) { |
1620522e | 568 | if (SvREADONLY(sv)) |
29569577 JH |
569 | XSRETURN_YES; |
570 | else | |
571 | XSRETURN_NO; | |
572 | } | |
573 | else if (items == 2) { | |
574 | if (SvTRUE(ST(1))) { | |
1620522e | 575 | #ifdef PERL_OLD_COPY_ON_WRITE |
3e89ba19 | 576 | if (SvIsCOW(sv)) sv_force_normal(sv); |
1620522e | 577 | #endif |
29569577 JH |
578 | SvREADONLY_on(sv); |
579 | XSRETURN_YES; | |
580 | } | |
581 | else { | |
14a976d6 | 582 | /* I hope you really know what you are doing. */ |
1620522e | 583 | SvREADONLY_off(sv); |
29569577 JH |
584 | XSRETURN_NO; |
585 | } | |
586 | } | |
14a976d6 | 587 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 | 588 | } |
2c6c1df5 | 589 | |
15eb3045 | 590 | XS(XS_constant__make_const); /* prototype to pass -Wmissing-prototypes */ |
2c6c1df5 FC |
591 | XS(XS_constant__make_const) /* This is dangerous stuff. */ |
592 | { | |
593 | dVAR; | |
594 | dXSARGS; | |
595 | SV * const svz = ST(0); | |
596 | SV * sv; | |
597 | PERL_UNUSED_ARG(cv); | |
598 | ||
599 | /* [perl #77776] - called as &foo() not foo() */ | |
600 | if (!SvROK(svz) || items != 1) | |
601 | croak_xs_usage(cv, "SCALAR"); | |
602 | ||
603 | sv = SvRV(svz); | |
604 | ||
605 | #ifdef PERL_OLD_COPY_ON_WRITE | |
606 | if (SvIsCOW(sv)) sv_force_normal(sv); | |
607 | #endif | |
608 | SvREADONLY_on(sv); | |
609 | if (SvTYPE(sv) == SVt_PVAV && AvFILLp(sv) != -1) { | |
610 | /* for constant.pm; nobody else should be calling this | |
611 | on arrays anyway. */ | |
612 | SV **svp; | |
613 | for (svp = AvARRAY(sv) + AvFILLp(sv) | |
614 | ; svp >= AvARRAY(sv) | |
615 | ; --svp) | |
616 | if (*svp) SvPADTMP_on(*svp); | |
617 | } | |
618 | XSRETURN(0); | |
619 | } | |
620 | ||
15eb3045 | 621 | XS(XS_Internals_SvREFCNT); /* prototype to pass -Wmissing-prototypes */ |
14a976d6 | 622 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 | 623 | { |
97aff369 | 624 | dVAR; |
29569577 | 625 | dXSARGS; |
80b6a949 AB |
626 | SV * const svz = ST(0); |
627 | SV * sv; | |
fa3febb6 | 628 | U32 refcnt; |
58c0efa5 | 629 | PERL_UNUSED_ARG(cv); |
6867be6d | 630 | |
80b6a949 | 631 | /* [perl #77776] - called as &foo() not foo() */ |
fa3febb6 | 632 | if ((items != 1 && items != 2) || !SvROK(svz)) |
80b6a949 AB |
633 | croak_xs_usage(cv, "SCALAR[, REFCOUNT]"); |
634 | ||
635 | sv = SvRV(svz); | |
636 | ||
14a976d6 | 637 | /* I hope you really know what you are doing. */ |
fa3febb6 DD |
638 | /* idea is for SvREFCNT(sv) to be accessed only once */ |
639 | refcnt = items == 2 ? | |
640 | /* we free one ref on exit */ | |
641 | (SvREFCNT(sv) = SvUV(ST(1)) + 1) | |
642 | : SvREFCNT(sv); | |
643 | XSRETURN_UV(refcnt - 1); /* Minus the ref created for us. */ | |
644 | ||
29569577 JH |
645 | } |
646 | ||
15eb3045 | 647 | XS(XS_Internals_hv_clear_placehold); /* prototype to pass -Wmissing-prototypes */ |
f044d0d1 | 648 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f | 649 | { |
97aff369 | 650 | dVAR; |
dfd4ef2f | 651 | dXSARGS; |
6867be6d | 652 | |
80b6a949 | 653 | if (items != 1 || !SvROK(ST(0))) |
afa74d42 | 654 | croak_xs_usage(cv, "hv"); |
c4420975 | 655 | else { |
ef8f7699 | 656 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); |
c4420975 AL |
657 | hv_clear_placeholders(hv); |
658 | XSRETURN(0); | |
659 | } | |
dfd4ef2f | 660 | } |
39f7a870 | 661 | |
15eb3045 | 662 | XS(XS_PerlIO_get_layers); /* prototype to pass -Wmissing-prototypes */ |
39f7a870 JH |
663 | XS(XS_PerlIO_get_layers) |
664 | { | |
97aff369 | 665 | dVAR; |
39f7a870 JH |
666 | dXSARGS; |
667 | if (items < 1 || items % 2 == 0) | |
afa74d42 | 668 | croak_xs_usage(cv, "filehandle[,args]"); |
97cb92d6 | 669 | #if defined(USE_PERLIO) |
39f7a870 JH |
670 | { |
671 | SV * sv; | |
672 | GV * gv; | |
673 | IO * io; | |
674 | bool input = TRUE; | |
675 | bool details = FALSE; | |
676 | ||
677 | if (items > 1) { | |
c4420975 | 678 | SV * const *svp; |
39f7a870 | 679 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
680 | SV * const * const varp = svp; |
681 | SV * const * const valp = svp + 1; | |
39f7a870 | 682 | STRLEN klen; |
c4420975 | 683 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
684 | |
685 | switch (*key) { | |
686 | case 'i': | |
687 | if (klen == 5 && memEQ(key, "input", 5)) { | |
688 | input = SvTRUE(*valp); | |
689 | break; | |
690 | } | |
691 | goto fail; | |
692 | case 'o': | |
693 | if (klen == 6 && memEQ(key, "output", 6)) { | |
694 | input = !SvTRUE(*valp); | |
695 | break; | |
696 | } | |
697 | goto fail; | |
698 | case 'd': | |
699 | if (klen == 7 && memEQ(key, "details", 7)) { | |
700 | details = SvTRUE(*valp); | |
701 | break; | |
702 | } | |
703 | goto fail; | |
704 | default: | |
705 | fail: | |
706 | Perl_croak(aTHX_ | |
707 | "get_layers: unknown argument '%s'", | |
708 | key); | |
709 | } | |
710 | } | |
711 | ||
712 | SP -= (items - 1); | |
713 | } | |
714 | ||
715 | sv = POPs; | |
7f9aa7d3 | 716 | gv = MAYBE_DEREF_GV(sv); |
39f7a870 | 717 | |
3825652d | 718 | if (!gv && !SvROK(sv)) |
7f9aa7d3 | 719 | gv = gv_fetchsv_nomg(sv, 0, SVt_PVIO); |
39f7a870 JH |
720 | |
721 | if (gv && (io = GvIO(gv))) { | |
c4420975 | 722 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 | 723 | IoIFP(io) : IoOFP(io)); |
c70927a6 | 724 | SSize_t i; |
b9f2b683 | 725 | const SSize_t last = av_tindex(av); |
c70927a6 | 726 | SSize_t nitem = 0; |
39f7a870 JH |
727 | |
728 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
729 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
730 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
731 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 732 | |
c4420975 AL |
733 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
734 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
735 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 | 736 | |
2102d7a2 | 737 | EXTEND(SP, 3); /* Three is the max in all branches: better check just once */ |
39f7a870 | 738 | if (details) { |
92e45a3e NC |
739 | /* Indents of 5? Yuck. */ |
740 | /* We know that PerlIO_get_layers creates a new SV for | |
741 | the name and flags, so we can just take a reference | |
742 | and "steal" it when we free the AV below. */ | |
2102d7a2 | 743 | PUSHs(namok |
92e45a3e | 744 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
ec3bab8e | 745 | : &PL_sv_undef); |
2102d7a2 | 746 | PUSHs(argok |
92e45a3e NC |
747 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
748 | SvCUR(*argsvp), | |
749 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) | |
750 | | SVs_TEMP) | |
751 | : &PL_sv_undef); | |
2102d7a2 | 752 | PUSHs(flgok |
92e45a3e | 753 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
ec3bab8e | 754 | : &PL_sv_undef); |
39f7a870 JH |
755 | nitem += 3; |
756 | } | |
757 | else { | |
758 | if (namok && argok) | |
2102d7a2 | 759 | PUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
be2597df | 760 | SVfARG(*namsvp), |
1eb9e81d | 761 | SVfARG(*argsvp)))); |
39f7a870 | 762 | else if (namok) |
2102d7a2 | 763 | PUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
39f7a870 | 764 | else |
2102d7a2 | 765 | PUSHs(&PL_sv_undef); |
39f7a870 JH |
766 | nitem++; |
767 | if (flgok) { | |
c4420975 | 768 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
769 | |
770 | if (flags & PERLIO_F_UTF8) { | |
2102d7a2 | 771 | PUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
39f7a870 JH |
772 | nitem++; |
773 | } | |
774 | } | |
775 | } | |
776 | } | |
777 | ||
778 | SvREFCNT_dec(av); | |
779 | ||
780 | XSRETURN(nitem); | |
781 | } | |
782 | } | |
5fef3b4a | 783 | #endif |
39f7a870 JH |
784 | |
785 | XSRETURN(0); | |
786 | } | |
787 | ||
241d1a3b | 788 | |
15eb3045 | 789 | XS(XS_re_is_regexp); /* prototype to pass -Wmissing-prototypes */ |
80305961 YO |
790 | XS(XS_re_is_regexp) |
791 | { | |
792 | dVAR; | |
793 | dXSARGS; | |
f7e71195 AB |
794 | PERL_UNUSED_VAR(cv); |
795 | ||
80305961 | 796 | if (items != 1) |
afa74d42 | 797 | croak_xs_usage(cv, "sv"); |
f7e71195 | 798 | |
f7e71195 AB |
799 | if (SvRXOK(ST(0))) { |
800 | XSRETURN_YES; | |
801 | } else { | |
802 | XSRETURN_NO; | |
80305961 YO |
803 | } |
804 | } | |
805 | ||
15eb3045 | 806 | XS(XS_re_regnames_count); /* prototype to pass -Wmissing-prototypes */ |
192b9cd1 | 807 | XS(XS_re_regnames_count) |
80305961 | 808 | { |
192b9cd1 AB |
809 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
810 | SV * ret; | |
80305961 YO |
811 | dVAR; |
812 | dXSARGS; | |
192b9cd1 AB |
813 | |
814 | if (items != 0) | |
afa74d42 | 815 | croak_xs_usage(cv, ""); |
192b9cd1 AB |
816 | |
817 | SP -= items; | |
fdae9473 | 818 | PUTBACK; |
192b9cd1 AB |
819 | |
820 | if (!rx) | |
821 | XSRETURN_UNDEF; | |
822 | ||
823 | ret = CALLREG_NAMED_BUFF_COUNT(rx); | |
824 | ||
825 | SPAGAIN; | |
fdae9473 NC |
826 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); |
827 | XSRETURN(1); | |
192b9cd1 AB |
828 | } |
829 | ||
15eb3045 | 830 | XS(XS_re_regname); /* prototype to pass -Wmissing-prototypes */ |
192b9cd1 AB |
831 | XS(XS_re_regname) |
832 | { | |
833 | dVAR; | |
834 | dXSARGS; | |
835 | REGEXP * rx; | |
836 | U32 flags; | |
837 | SV * ret; | |
838 | ||
28d8d7f4 | 839 | if (items < 1 || items > 2) |
afa74d42 | 840 | croak_xs_usage(cv, "name[, all ]"); |
192b9cd1 | 841 | |
80305961 | 842 | SP -= items; |
fdae9473 | 843 | PUTBACK; |
80305961 | 844 | |
192b9cd1 AB |
845 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
846 | ||
847 | if (!rx) | |
848 | XSRETURN_UNDEF; | |
849 | ||
850 | if (items == 2 && SvTRUE(ST(1))) { | |
f1b875a0 | 851 | flags = RXapif_ALL; |
192b9cd1 | 852 | } else { |
f1b875a0 | 853 | flags = RXapif_ONE; |
80305961 | 854 | } |
f1b875a0 | 855 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
192b9cd1 | 856 | |
fdae9473 NC |
857 | SPAGAIN; |
858 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); | |
859 | XSRETURN(1); | |
80305961 YO |
860 | } |
861 | ||
192b9cd1 | 862 | |
15eb3045 | 863 | XS(XS_re_regnames); /* prototype to pass -Wmissing-prototypes */ |
80305961 YO |
864 | XS(XS_re_regnames) |
865 | { | |
192b9cd1 | 866 | dVAR; |
80305961 | 867 | dXSARGS; |
192b9cd1 AB |
868 | REGEXP * rx; |
869 | U32 flags; | |
870 | SV *ret; | |
871 | AV *av; | |
c70927a6 FC |
872 | SSize_t length; |
873 | SSize_t i; | |
192b9cd1 AB |
874 | SV **entry; |
875 | ||
876 | if (items > 1) | |
afa74d42 | 877 | croak_xs_usage(cv, "[all]"); |
192b9cd1 AB |
878 | |
879 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; | |
880 | ||
881 | if (!rx) | |
882 | XSRETURN_UNDEF; | |
883 | ||
884 | if (items == 1 && SvTRUE(ST(0))) { | |
f1b875a0 | 885 | flags = RXapif_ALL; |
192b9cd1 | 886 | } else { |
f1b875a0 | 887 | flags = RXapif_ONE; |
192b9cd1 AB |
888 | } |
889 | ||
80305961 | 890 | SP -= items; |
fdae9473 | 891 | PUTBACK; |
80305961 | 892 | |
f1b875a0 | 893 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
192b9cd1 AB |
894 | |
895 | SPAGAIN; | |
896 | ||
192b9cd1 AB |
897 | if (!ret) |
898 | XSRETURN_UNDEF; | |
899 | ||
502c6561 | 900 | av = MUTABLE_AV(SvRV(ret)); |
b9f2b683 | 901 | length = av_tindex(av); |
192b9cd1 | 902 | |
2102d7a2 | 903 | EXTEND(SP, length+1); /* better extend stack just once */ |
192b9cd1 AB |
904 | for (i = 0; i <= length; i++) { |
905 | entry = av_fetch(av, i, FALSE); | |
906 | ||
907 | if (!entry) | |
908 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); | |
909 | ||
2102d7a2 | 910 | mPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
80305961 | 911 | } |
ec83ea38 MHM |
912 | |
913 | SvREFCNT_dec(ret); | |
914 | ||
192b9cd1 AB |
915 | PUTBACK; |
916 | return; | |
80305961 YO |
917 | } |
918 | ||
15eb3045 | 919 | XS(XS_re_regexp_pattern); /* prototype to pass -Wmissing-prototypes */ |
192c1e27 JH |
920 | XS(XS_re_regexp_pattern) |
921 | { | |
922 | dVAR; | |
923 | dXSARGS; | |
924 | REGEXP *re; | |
192c1e27 | 925 | |
22d874e2 DD |
926 | EXTEND(SP, 2); |
927 | SP -= items; | |
192c1e27 | 928 | if (items != 1) |
afa74d42 | 929 | croak_xs_usage(cv, "sv"); |
192c1e27 | 930 | |
192c1e27 JH |
931 | /* |
932 | Checks if a reference is a regex or not. If the parameter is | |
933 | not a ref, or is not the result of a qr// then returns false | |
934 | in scalar context and an empty list in list context. | |
935 | Otherwise in list context it returns the pattern and the | |
936 | modifiers, in scalar context it returns the pattern just as it | |
937 | would if the qr// was stringified normally, regardless as | |
486ec47a | 938 | to the class of the variable and any stringification overloads |
192c1e27 JH |
939 | on the object. |
940 | */ | |
941 | ||
942 | if ((re = SvRX(ST(0)))) /* assign deliberate */ | |
943 | { | |
22c985d5 | 944 | /* Houston, we have a regex! */ |
192c1e27 | 945 | SV *pattern; |
192c1e27 JH |
946 | |
947 | if ( GIMME_V == G_ARRAY ) { | |
9de15fec | 948 | STRLEN left = 0; |
a62b1201 | 949 | char reflags[sizeof(INT_PAT_MODS) + MAX_CHARSET_NAME_LENGTH]; |
69af1167 SH |
950 | const char *fptr; |
951 | char ch; | |
952 | U16 match_flags; | |
953 | ||
192c1e27 JH |
954 | /* |
955 | we are in list context so stringify | |
956 | the modifiers that apply. We ignore "negative | |
a62b1201 | 957 | modifiers" in this scenario, and the default character set |
192c1e27 JH |
958 | */ |
959 | ||
a62b1201 KW |
960 | if (get_regex_charset(RX_EXTFLAGS(re)) != REGEX_DEPENDS_CHARSET) { |
961 | STRLEN len; | |
962 | const char* const name = get_regex_charset_name(RX_EXTFLAGS(re), | |
963 | &len); | |
964 | Copy(name, reflags + left, len, char); | |
965 | left += len; | |
9de15fec | 966 | } |
69af1167 | 967 | fptr = INT_PAT_MODS; |
73134a2e | 968 | match_flags = (U16)((RX_EXTFLAGS(re) & RXf_PMf_COMPILETIME) |
192c1e27 JH |
969 | >> RXf_PMf_STD_PMMOD_SHIFT); |
970 | ||
971 | while((ch = *fptr++)) { | |
972 | if(match_flags & 1) { | |
973 | reflags[left++] = ch; | |
974 | } | |
975 | match_flags >>= 1; | |
976 | } | |
977 | ||
fb632ce3 NC |
978 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
979 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 JH |
980 | |
981 | /* return the pattern and the modifiers */ | |
2102d7a2 S |
982 | PUSHs(pattern); |
983 | PUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); | |
192c1e27 JH |
984 | XSRETURN(2); |
985 | } else { | |
986 | /* Scalar, so use the string that Perl would return */ | |
987 | /* return the pattern in (?msix:..) format */ | |
988 | #if PERL_VERSION >= 11 | |
daba3364 | 989 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
192c1e27 | 990 | #else |
fb632ce3 NC |
991 | pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re), |
992 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 | 993 | #endif |
22d874e2 | 994 | PUSHs(pattern); |
192c1e27 JH |
995 | XSRETURN(1); |
996 | } | |
997 | } else { | |
998 | /* It ain't a regexp folks */ | |
999 | if ( GIMME_V == G_ARRAY ) { | |
1000 | /* return the empty list */ | |
1001 | XSRETURN_UNDEF; | |
1002 | } else { | |
1003 | /* Because of the (?:..) wrapping involved in a | |
1004 | stringified pattern it is impossible to get a | |
1005 | result for a real regexp that would evaluate to | |
1006 | false. Therefore we can return PL_sv_no to signify | |
1007 | that the object is not a regex, this means that one | |
1008 | can say | |
1009 | ||
1010 | if (regex($might_be_a_regex) eq '(?:foo)') { } | |
1011 | ||
1012 | and not worry about undefined values. | |
1013 | */ | |
1014 | XSRETURN_NO; | |
1015 | } | |
1016 | } | |
1017 | /* NOT-REACHED */ | |
1018 | } | |
1019 | ||
b7a8ab8f | 1020 | #include "vutil.h" |
abc6d738 FC |
1021 | #include "vxs.inc" |
1022 | ||
eff5b9d5 NC |
1023 | struct xsub_details { |
1024 | const char *name; | |
1025 | XSUBADDR_t xsub; | |
1026 | const char *proto; | |
1027 | }; | |
1028 | ||
a9b7658f | 1029 | static const struct xsub_details details[] = { |
eff5b9d5 NC |
1030 | {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL}, |
1031 | {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL}, | |
1032 | {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL}, | |
abc6d738 FC |
1033 | #define VXS_XSUB_DETAILS |
1034 | #include "vxs.inc" | |
1035 | #undef VXS_XSUB_DETAILS | |
eff5b9d5 NC |
1036 | {"utf8::is_utf8", XS_utf8_is_utf8, NULL}, |
1037 | {"utf8::valid", XS_utf8_valid, NULL}, | |
1038 | {"utf8::encode", XS_utf8_encode, NULL}, | |
1039 | {"utf8::decode", XS_utf8_decode, NULL}, | |
1040 | {"utf8::upgrade", XS_utf8_upgrade, NULL}, | |
1041 | {"utf8::downgrade", XS_utf8_downgrade, NULL}, | |
1042 | {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL}, | |
1043 | {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL}, | |
1044 | {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"}, | |
2c6c1df5 | 1045 | {"constant::_make_const", XS_constant__make_const, "\\[$@]"}, |
eff5b9d5 NC |
1046 | {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"}, |
1047 | {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"}, | |
1048 | {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"}, | |
eff5b9d5 NC |
1049 | {"re::is_regexp", XS_re_is_regexp, "$"}, |
1050 | {"re::regname", XS_re_regname, ";$$"}, | |
1051 | {"re::regnames", XS_re_regnames, ";$"}, | |
1052 | {"re::regnames_count", XS_re_regnames_count, ""}, | |
1053 | {"re::regexp_pattern", XS_re_regexp_pattern, "$"}, | |
eff5b9d5 NC |
1054 | }; |
1055 | ||
1056 | void | |
1057 | Perl_boot_core_UNIVERSAL(pTHX) | |
1058 | { | |
1059 | dVAR; | |
1060 | static const char file[] = __FILE__; | |
7a6ecb12 | 1061 | const struct xsub_details *xsub = details; |
c3caa5c3 | 1062 | const struct xsub_details *end = C_ARRAY_END(details); |
eff5b9d5 NC |
1063 | |
1064 | do { | |
1065 | newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0); | |
1066 | } while (++xsub < end); | |
1067 | ||
eff5b9d5 | 1068 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
bad4ae38 FC |
1069 | { |
1070 | CV * const cv = | |
1071 | newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL); | |
1072 | Safefree(CvFILE(cv)); | |
1073 | CvFILE(cv) = (char *)file; | |
1074 | CvDYNFILE_off(cv); | |
1075 | } | |
eff5b9d5 | 1076 | } |
80305961 | 1077 | |
241d1a3b NC |
1078 | /* |
1079 | * Local variables: | |
1080 | * c-indentation-style: bsd | |
1081 | * c-basic-offset: 4 | |
14d04a33 | 1082 | * indent-tabs-mode: nil |
241d1a3b NC |
1083 | * End: |
1084 | * | |
14d04a33 | 1085 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 1086 | */ |