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fix MAD breakage caused by qw patch
[perl5.git] / universal.c
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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
24 * clever to move them to seperate XS files which would then be pulled
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
aea32303
NC
36static HV *
37S_get_isa_hash(pTHX_ HV *const stash)
00bf72ff
NC
38{
39 dVAR;
40 struct mro_meta *const meta = HvMROMETA(stash);
41
42 PERL_ARGS_ASSERT_GET_ISA_HASH;
43
44 if (!meta->isa) {
45 AV *const isa = mro_get_linear_isa(stash);
46 if (!meta->isa) {
47 HV *const isa_hash = newHV();
48 /* Linearisation didn't build it for us, so do it here. */
49 SV *const *svp = AvARRAY(isa);
50 SV *const *const svp_end = svp + AvFILLp(isa) + 1;
51 const HEK *const canon_name = HvNAME_HEK(stash);
52
53 while (svp < svp_end) {
54 (void) hv_store_ent(isa_hash, *svp++, &PL_sv_undef, 0);
55 }
56
57 (void) hv_common(isa_hash, NULL, HEK_KEY(canon_name),
58 HEK_LEN(canon_name), HEK_FLAGS(canon_name),
59 HV_FETCH_ISSTORE, &PL_sv_undef,
60 HEK_HASH(canon_name));
61 (void) hv_store(isa_hash, "UNIVERSAL", 9, &PL_sv_undef, 0);
62
63 SvREADONLY_on(isa_hash);
64
65 meta->isa = isa_hash;
66 }
67 }
68 return meta->isa;
69}
70
6d4a7be2
PP
71/*
72 * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com>
73 * The main guts of traverse_isa was actually copied from gv_fetchmeth
74 */
75
a9ec700e 76STATIC bool
515a4f72 77S_isa_lookup(pTHX_ HV *stash, const char * const name)
6d4a7be2 78{
97aff369 79 dVAR;
a49ba3fc 80 const struct mro_meta *const meta = HvMROMETA(stash);
aea32303 81 HV *const isa = meta->isa ? meta->isa : S_get_isa_hash(aTHX_ stash);
a49ba3fc
NC
82 STRLEN len = strlen(name);
83 const HV *our_stash;
6d4a7be2 84
7918f24d
NC
85 PERL_ARGS_ASSERT_ISA_LOOKUP;
86
a49ba3fc
NC
87 if (hv_common(isa, NULL, name, len, 0 /* No "UTF-8" flag possible with only
88 a char * argument*/,
89 HV_FETCH_ISEXISTS, NULL, 0)) {
90 /* Direct name lookup worked. */
a9ec700e 91 return TRUE;
a49ba3fc 92 }
6d4a7be2 93
a49ba3fc
NC
94 /* A stash/class can go by many names (ie. User == main::User), so
95 we use the name in the stash itself, which is canonical. */
96 our_stash = gv_stashpvn(name, len, 0);
97
98 if (our_stash) {
99 HEK *const canon_name = HvNAME_HEK(our_stash);
a1d407e8 100
a49ba3fc
NC
101 if (hv_common(isa, NULL, HEK_KEY(canon_name), HEK_LEN(canon_name),
102 HEK_FLAGS(canon_name),
103 HV_FETCH_ISEXISTS, NULL, HEK_HASH(canon_name))) {
e1a479c5 104 return TRUE;
a49ba3fc 105 }
6d4a7be2
PP
106 }
107
a9ec700e 108 return FALSE;
6d4a7be2
PP
109}
110
954c1994 111/*
ccfc67b7
JH
112=head1 SV Manipulation Functions
113
954c1994
GS
114=for apidoc sv_derived_from
115
6885da0e 116Returns a boolean indicating whether the SV is derived from the specified class
117I<at the C level>. To check derivation at the Perl level, call C<isa()> as a
118normal Perl method.
954c1994
GS
119
120=cut
121*/
122
55497cff 123bool
15f169a1 124Perl_sv_derived_from(pTHX_ SV *sv, const char *const name)
55497cff 125{
97aff369 126 dVAR;
0b6f4f5c 127 HV *stash;
46e4b22b 128
7918f24d
NC
129 PERL_ARGS_ASSERT_SV_DERIVED_FROM;
130
5b295bef 131 SvGETMAGIC(sv);
55497cff
PP
132
133 if (SvROK(sv)) {
0b6f4f5c 134 const char *type;
55497cff
PP
135 sv = SvRV(sv);
136 type = sv_reftype(sv,0);
0b6f4f5c
AL
137 if (type && strEQ(type,name))
138 return TRUE;
139 stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL;
55497cff
PP
140 }
141 else {
da51bb9b 142 stash = gv_stashsv(sv, 0);
55497cff 143 }
46e4b22b 144
4a9e32d8 145 return stash ? isa_lookup(stash, name) : FALSE;
55497cff
PP
146}
147
cbc021f9 148/*
149=for apidoc sv_does
150
151Returns a boolean indicating whether the SV performs a specific, named role.
152The SV can be a Perl object or the name of a Perl class.
153
154=cut
155*/
156
1b026014
NIS
157#include "XSUB.h"
158
cbc021f9 159bool
15f169a1 160Perl_sv_does(pTHX_ SV *sv, const char *const name)
cbc021f9 161{
162 const char *classname;
163 bool does_it;
59e7186f 164 SV *methodname;
cbc021f9 165 dSP;
7918f24d
NC
166
167 PERL_ARGS_ASSERT_SV_DOES;
168
cbc021f9 169 ENTER;
170 SAVETMPS;
171
172 SvGETMAGIC(sv);
173
174 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
7ce46f2a
GG
175 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) {
176 LEAVE;
cbc021f9 177 return FALSE;
7ce46f2a 178 }
cbc021f9 179
180 if (sv_isobject(sv)) {
181 classname = sv_reftype(SvRV(sv),TRUE);
182 } else {
94707740 183 classname = SvPV_nolen(sv);
cbc021f9 184 }
185
7ce46f2a
GG
186 if (strEQ(name,classname)) {
187 LEAVE;
cbc021f9 188 return TRUE;
7ce46f2a 189 }
cbc021f9 190
191 PUSHMARK(SP);
192 XPUSHs(sv);
6e449a3a 193 mXPUSHs(newSVpv(name, 0));
cbc021f9 194 PUTBACK;
195
84bafc02 196 methodname = newSVpvs_flags("isa", SVs_TEMP);
59e7186f
RGS
197 /* ugly hack: use the SvSCREAM flag so S_method_common
198 * can figure out we're calling DOES() and not isa(),
199 * and report eventual errors correctly. --rgs */
200 SvSCREAM_on(methodname);
201 call_sv(methodname, G_SCALAR | G_METHOD);
cbc021f9 202 SPAGAIN;
203
204 does_it = SvTRUE( TOPs );
205 FREETMPS;
206 LEAVE;
207
208 return does_it;
209}
210
afa74d42
NC
211/*
212=for apidoc croak_xs_usage
213
214A specialised variant of C<croak()> for emitting the usage message for xsubs
215
216 croak_xs_usage(cv, "eee_yow");
217
218works out the package name and subroutine name from C<cv>, and then calls
219C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as:
220
1b1ee2ef 221 Perl_croak(aTHX_ "Usage: %s::%s(%s)", "ouch" "awk", "eee_yow");
afa74d42
NC
222
223=cut
224*/
225
226void
227Perl_croak_xs_usage(pTHX_ const CV *const cv, const char *const params)
228{
229 const GV *const gv = CvGV(cv);
230
231 PERL_ARGS_ASSERT_CROAK_XS_USAGE;
232
233 if (gv) {
234 const char *const gvname = GvNAME(gv);
235 const HV *const stash = GvSTASH(gv);
236 const char *const hvname = stash ? HvNAME_get(stash) : NULL;
237
238 if (hvname)
239 Perl_croak(aTHX_ "Usage: %s::%s(%s)", hvname, gvname, params);
240 else
241 Perl_croak(aTHX_ "Usage: %s(%s)", gvname, params);
242 } else {
243 /* Pants. I don't think that it should be possible to get here. */
93c51217 244 Perl_croak(aTHX_ "Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params);
afa74d42
NC
245 }
246}
55497cff 247
6d4a7be2
PP
248XS(XS_UNIVERSAL_isa)
249{
97aff369 250 dVAR;
6d4a7be2 251 dXSARGS;
6d4a7be2
PP
252
253 if (items != 2)
afa74d42 254 croak_xs_usage(cv, "reference, kind");
c4420975
AL
255 else {
256 SV * const sv = ST(0);
257 const char *name;
6d4a7be2 258
c4420975 259 SvGETMAGIC(sv);
d3f7f2b2 260
c4420975
AL
261 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
262 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
263 XSRETURN_UNDEF;
f8f70380 264
c4420975 265 name = SvPV_nolen_const(ST(1));
6d4a7be2 266
c4420975
AL
267 ST(0) = boolSV(sv_derived_from(sv, name));
268 XSRETURN(1);
269 }
6d4a7be2
PP
270}
271
6d4a7be2
PP
272XS(XS_UNIVERSAL_can)
273{
97aff369 274 dVAR;
6d4a7be2
PP
275 dXSARGS;
276 SV *sv;
6867be6d 277 const char *name;
6d4a7be2 278 SV *rv;
6f08146e 279 HV *pkg = NULL;
6d4a7be2
PP
280
281 if (items != 2)
afa74d42 282 croak_xs_usage(cv, "object-ref, method");
6d4a7be2
PP
283
284 sv = ST(0);
f8f70380 285
5b295bef 286 SvGETMAGIC(sv);
d3f7f2b2 287
253ecd6d
RGS
288 if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))
289 || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv))))
f8f70380
GS
290 XSRETURN_UNDEF;
291
0510663f 292 name = SvPV_nolen_const(ST(1));
3280af22 293 rv = &PL_sv_undef;
6d4a7be2 294
46e4b22b 295 if (SvROK(sv)) {
daba3364 296 sv = MUTABLE_SV(SvRV(sv));
46e4b22b 297 if (SvOBJECT(sv))
6f08146e
NIS
298 pkg = SvSTASH(sv);
299 }
300 else {
da51bb9b 301 pkg = gv_stashsv(sv, 0);
6f08146e
NIS
302 }
303
304 if (pkg) {
c4420975 305 GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE);
dc848c6f 306 if (gv && isGV(gv))
daba3364 307 rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv))));
6d4a7be2
PP
308 }
309
310 ST(0) = rv;
311 XSRETURN(1);
312}
313
cbc021f9 314XS(XS_UNIVERSAL_DOES)
315{
316 dVAR;
317 dXSARGS;
58c0efa5 318 PERL_UNUSED_ARG(cv);
cbc021f9 319
320 if (items != 2)
26be3db7 321 Perl_croak(aTHX_ "Usage: invocant->DOES(kind)");
cbc021f9 322 else {
323 SV * const sv = ST(0);
324 const char *name;
325
326 name = SvPV_nolen_const(ST(1));
327 if (sv_does( sv, name ))
328 XSRETURN_YES;
329
330 XSRETURN_NO;
331 }
332}
333
6d4a7be2
PP
334XS(XS_UNIVERSAL_VERSION)
335{
97aff369 336 dVAR;
6d4a7be2
PP
337 dXSARGS;
338 HV *pkg;
339 GV **gvp;
340 GV *gv;
341 SV *sv;
e1ec3a88 342 const char *undef;
58c0efa5 343 PERL_UNUSED_ARG(cv);
6d4a7be2 344
1571675a 345 if (SvROK(ST(0))) {
daba3364 346 sv = MUTABLE_SV(SvRV(ST(0)));
1571675a 347 if (!SvOBJECT(sv))
cea2e8a9 348 Perl_croak(aTHX_ "Cannot find version of an unblessed reference");
6d4a7be2
PP
349 pkg = SvSTASH(sv);
350 }
351 else {
da51bb9b 352 pkg = gv_stashsv(ST(0), 0);
6d4a7be2
PP
353 }
354
4608196e 355 gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;
6d4a7be2 356
0008872a 357 if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
c4420975 358 SV * const nsv = sv_newmortal();
6d4a7be2
PP
359 sv_setsv(nsv, sv);
360 sv = nsv;
137d6fc0 361 if ( !sv_derived_from(sv, "version"))
ac0e6a2f 362 upg_version(sv, FALSE);
c445ea15 363 undef = NULL;
6d4a7be2
PP
364 }
365 else {
daba3364 366 sv = &PL_sv_undef;
6d4a7be2
PP
367 undef = "(undef)";
368 }
369
1571675a 370 if (items > 1) {
1571675a
GS
371 SV *req = ST(1);
372
62658f4d 373 if (undef) {
bfcb3514 374 if (pkg) {
c4420975 375 const char * const name = HvNAME_get(pkg);
a3b680e6 376 Perl_croak(aTHX_
bfcb3514
NC
377 "%s does not define $%s::VERSION--version check failed",
378 name, name);
379 } else {
a3b680e6
AL
380 Perl_croak(aTHX_
381 "%s defines neither package nor VERSION--version check failed",
0510663f 382 SvPVx_nolen_const(ST(0)) );
62658f4d
PM
383 }
384 }
ad63d80f 385
137d6fc0
JP
386 if ( !sv_derived_from(req, "version")) {
387 /* req may very well be R/O, so create a new object */
ac0e6a2f 388 req = sv_2mortal( new_version(req) );
137d6fc0 389 }
1571675a 390
ac0e6a2f 391 if ( vcmp( req, sv ) > 0 ) {
ef8f7699 392 if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) {
ac0e6a2f
RGS
393 Perl_croak(aTHX_ "%s version %"SVf" required--"
394 "this is only version %"SVf"", HvNAME_get(pkg),
e3a22e3f 395 SVfARG(sv_2mortal(vnormal(req))),
396 SVfARG(sv_2mortal(vnormal(sv))));
ac0e6a2f
RGS
397 } else {
398 Perl_croak(aTHX_ "%s version %"SVf" required--"
399 "this is only version %"SVf"", HvNAME_get(pkg),
e3a22e3f 400 SVfARG(sv_2mortal(vstringify(req))),
401 SVfARG(sv_2mortal(vstringify(sv))));
ac0e6a2f
RGS
402 }
403 }
404
2d8e6c8d 405 }
6d4a7be2 406
2b140d5b 407 if ( SvOK(sv) && sv_derived_from(sv, "version") ) {
e3a22e3f 408 ST(0) = sv_2mortal(vstringify(sv));
13f8f398
JP
409 } else {
410 ST(0) = sv;
b38a9dc5 411 }
6d4a7be2
PP
412
413 XSRETURN(1);
414}
415
439cb1c4
JP
416XS(XS_version_new)
417{
97aff369 418 dVAR;
439cb1c4 419 dXSARGS;
129318bd 420 if (items > 3)
afa74d42 421 croak_xs_usage(cv, "class, version");
439cb1c4
JP
422 SP -= items;
423 {
137d6fc0
JP
424 SV *vs = ST(1);
425 SV *rv;
c4420975
AL
426 const char * const classname =
427 sv_isobject(ST(0)) /* get the class if called as an object method */
428 ? HvNAME(SvSTASH(SvRV(ST(0))))
429 : (char *)SvPV_nolen(ST(0));
9137345a 430
91152fc1 431 if ( items == 1 || ! SvOK(vs) ) { /* no param or explicit undef */
92dcf8ce
JP
432 /* create empty object */
433 vs = sv_newmortal();
be5574c0 434 sv_setpvs(vs, "0");
9137345a
JP
435 }
436 else if ( items == 3 ) {
437 vs = sv_newmortal();
cfd0369c 438 Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2)));
129318bd 439 }
439cb1c4 440
137d6fc0 441 rv = new_version(vs);
0723351e 442 if ( strcmp(classname,"version") != 0 ) /* inherited new() */
da51bb9b 443 sv_bless(rv, gv_stashpv(classname, GV_ADD));
137d6fc0 444
6e449a3a 445 mPUSHs(rv);
439cb1c4
JP
446 PUTBACK;
447 return;
448 }
449}
450
451XS(XS_version_stringify)
452{
97aff369 453 dVAR;
41be1fbd
JH
454 dXSARGS;
455 if (items < 1)
afa74d42 456 croak_xs_usage(cv, "lobj, ...");
41be1fbd
JH
457 SP -= items;
458 {
d808b681 459 SV * lobj = ST(0);
41be1fbd 460
d808b681
JP
461 if (sv_derived_from(lobj, "version") && SvROK(lobj)) {
462 lobj = SvRV(lobj);
41be1fbd
JH
463 }
464 else
465 Perl_croak(aTHX_ "lobj is not of type version");
466
6e449a3a 467 mPUSHs(vstringify(lobj));
41be1fbd
JH
468
469 PUTBACK;
470 return;
471 }
439cb1c4
JP
472}
473
474XS(XS_version_numify)
475{
97aff369 476 dVAR;
41be1fbd
JH
477 dXSARGS;
478 if (items < 1)
afa74d42 479 croak_xs_usage(cv, "lobj, ...");
41be1fbd
JH
480 SP -= items;
481 {
d808b681 482 SV * lobj = ST(0);
41be1fbd 483
d808b681
JP
484 if (sv_derived_from(lobj, "version") && SvROK(lobj)) {
485 lobj = SvRV(lobj);
41be1fbd
JH
486 }
487 else
488 Perl_croak(aTHX_ "lobj is not of type version");
489
6e449a3a 490 mPUSHs(vnumify(lobj));
41be1fbd
JH
491
492 PUTBACK;
493 return;
494 }
439cb1c4
JP
495}
496
9137345a
JP
497XS(XS_version_normal)
498{
97aff369 499 dVAR;
9137345a
JP
500 dXSARGS;
501 if (items < 1)
afa74d42 502 croak_xs_usage(cv, "lobj, ...");
9137345a
JP
503 SP -= items;
504 {
d808b681 505 SV * lobj = ST(0);
9137345a 506
d808b681
JP
507 if (sv_derived_from(lobj, "version") && SvROK(lobj)) {
508 lobj = SvRV(lobj);
9137345a
JP
509 }
510 else
511 Perl_croak(aTHX_ "lobj is not of type version");
512
6e449a3a 513 mPUSHs(vnormal(lobj));
9137345a
JP
514
515 PUTBACK;
516 return;
517 }
518}
519
439cb1c4
JP
520XS(XS_version_vcmp)
521{
97aff369 522 dVAR;
41be1fbd
JH
523 dXSARGS;
524 if (items < 1)
afa74d42 525 croak_xs_usage(cv, "lobj, ...");
41be1fbd
JH
526 SP -= items;
527 {
d808b681 528 SV * lobj = ST(0);
41be1fbd 529
d808b681
JP
530 if (sv_derived_from(lobj, "version") && SvROK(lobj)) {
531 lobj = SvRV(lobj);
41be1fbd
JH
532 }
533 else
534 Perl_croak(aTHX_ "lobj is not of type version");
535
536 {
537 SV *rs;
538 SV *rvs;
539 SV * robj = ST(1);
7452cf6a 540 const IV swap = (IV)SvIV(ST(2));
41be1fbd
JH
541
542 if ( ! sv_derived_from(robj, "version") )
543 {
e3a22e3f 544 robj = new_version(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP));
545 sv_2mortal(robj);
41be1fbd
JH
546 }
547 rvs = SvRV(robj);
548
549 if ( swap )
550 {
551 rs = newSViv(vcmp(rvs,lobj));
552 }
553 else
554 {
555 rs = newSViv(vcmp(lobj,rvs));
556 }
557
6e449a3a 558 mPUSHs(rs);
41be1fbd
JH
559 }
560
561 PUTBACK;
562 return;
563 }
439cb1c4
JP
564}
565
566XS(XS_version_boolean)
567{
97aff369
JH
568 dVAR;
569 dXSARGS;
570 if (items < 1)
afa74d42 571 croak_xs_usage(cv, "lobj, ...");
97aff369 572 SP -= items;
d808b681 573 if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) {
c4420975 574 SV * const lobj = SvRV(ST(0));
396482e1 575 SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) );
6e449a3a 576 mPUSHs(rs);
c4420975
AL
577 PUTBACK;
578 return;
579 }
580 else
581 Perl_croak(aTHX_ "lobj is not of type version");
439cb1c4
JP
582}
583
584XS(XS_version_noop)
585{
97aff369 586 dVAR;
2dfd8427
AL
587 dXSARGS;
588 if (items < 1)
afa74d42 589 croak_xs_usage(cv, "lobj, ...");
d808b681 590 if (sv_derived_from(ST(0), "version") && SvROK(ST(0)))
2dfd8427
AL
591 Perl_croak(aTHX_ "operation not supported with version object");
592 else
593 Perl_croak(aTHX_ "lobj is not of type version");
594#ifndef HASATTRIBUTE_NORETURN
595 XSRETURN_EMPTY;
596#endif
439cb1c4
JP
597}
598
c8d69e4a
JP
599XS(XS_version_is_alpha)
600{
97aff369 601 dVAR;
c8d69e4a
JP
602 dXSARGS;
603 if (items != 1)
afa74d42 604 croak_xs_usage(cv, "lobj");
c8d69e4a 605 SP -= items;
d808b681 606 if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) {
c4420975 607 SV * const lobj = ST(0);
ef8f7699 608 if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) )
c4420975
AL
609 XSRETURN_YES;
610 else
611 XSRETURN_NO;
c8d69e4a
JP
612 PUTBACK;
613 return;
614 }
c4420975
AL
615 else
616 Perl_croak(aTHX_ "lobj is not of type version");
c8d69e4a
JP
617}
618
137d6fc0
JP
619XS(XS_version_qv)
620{
97aff369 621 dVAR;
137d6fc0 622 dXSARGS;
4ed3fda4 623 PERL_UNUSED_ARG(cv);
137d6fc0
JP
624 SP -= items;
625 {
f941e658
JP
626 SV * ver = ST(0);
627 SV * rv;
628 const char * classname = "";
91152fc1 629 if ( items == 2 && SvOK(ST(1)) ) {
f941e658
JP
630 /* getting called as object or class method */
631 ver = ST(1);
632 classname =
633 sv_isobject(ST(0)) /* class called as an object method */
634 ? HvNAME_get(SvSTASH(SvRV(ST(0))))
635 : (char *)SvPV_nolen(ST(0));
636 }
637 if ( !SvVOK(ver) ) { /* not already a v-string */
638 rv = sv_newmortal();
ac0e6a2f
RGS
639 sv_setsv(rv,ver); /* make a duplicate */
640 upg_version(rv, TRUE);
f941e658
JP
641 } else {
642 rv = sv_2mortal(new_version(ver));
137d6fc0 643 }
f941e658
JP
644 if ( items == 2 && strcmp(classname,"version") ) { /* inherited new() */
645 sv_bless(rv, gv_stashpv(classname, GV_ADD));
137d6fc0 646 }
f941e658
JP
647 PUSHs(rv);
648 }
649 PUTBACK;
650 return;
651}
137d6fc0 652
f941e658
JP
653XS(XS_version_is_qv)
654{
655 dVAR;
656 dXSARGS;
657 if (items != 1)
658 croak_xs_usage(cv, "lobj");
659 SP -= items;
d808b681 660 if (sv_derived_from(ST(0), "version") && SvROK(ST(0))) {
f941e658
JP
661 SV * const lobj = ST(0);
662 if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) )
663 XSRETURN_YES;
664 else
665 XSRETURN_NO;
137d6fc0
JP
666 PUTBACK;
667 return;
668 }
f941e658
JP
669 else
670 Perl_croak(aTHX_ "lobj is not of type version");
137d6fc0
JP
671}
672
8800c35a
JH
673XS(XS_utf8_is_utf8)
674{
97aff369 675 dVAR;
41be1fbd
JH
676 dXSARGS;
677 if (items != 1)
afa74d42 678 croak_xs_usage(cv, "sv");
c4420975 679 else {
76f73021 680 SV * const sv = ST(0);
681 SvGETMAGIC(sv);
c4420975
AL
682 if (SvUTF8(sv))
683 XSRETURN_YES;
684 else
685 XSRETURN_NO;
41be1fbd
JH
686 }
687 XSRETURN_EMPTY;
8800c35a
JH
688}
689
1b026014
NIS
690XS(XS_utf8_valid)
691{
97aff369 692 dVAR;
41be1fbd
JH
693 dXSARGS;
694 if (items != 1)
afa74d42 695 croak_xs_usage(cv, "sv");
c4420975
AL
696 else {
697 SV * const sv = ST(0);
698 STRLEN len;
699 const char * const s = SvPV_const(sv,len);
700 if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len))
701 XSRETURN_YES;
702 else
703 XSRETURN_NO;
704 }
41be1fbd 705 XSRETURN_EMPTY;
1b026014
NIS
706}
707
708XS(XS_utf8_encode)
709{
97aff369 710 dVAR;
1b026014
NIS
711 dXSARGS;
712 if (items != 1)
afa74d42 713 croak_xs_usage(cv, "sv");
c4420975 714 sv_utf8_encode(ST(0));
1b026014
NIS
715 XSRETURN_EMPTY;
716}
717
718XS(XS_utf8_decode)
719{
97aff369 720 dVAR;
1b026014
NIS
721 dXSARGS;
722 if (items != 1)
afa74d42 723 croak_xs_usage(cv, "sv");
c4420975
AL
724 else {
725 SV * const sv = ST(0);
6867be6d 726 const bool RETVAL = sv_utf8_decode(sv);
1b026014
NIS
727 ST(0) = boolSV(RETVAL);
728 sv_2mortal(ST(0));
729 }
730 XSRETURN(1);
731}
732
733XS(XS_utf8_upgrade)
734{
97aff369 735 dVAR;
1b026014
NIS
736 dXSARGS;
737 if (items != 1)
afa74d42 738 croak_xs_usage(cv, "sv");
c4420975
AL
739 else {
740 SV * const sv = ST(0);
1b026014
NIS
741 STRLEN RETVAL;
742 dXSTARG;
743
744 RETVAL = sv_utf8_upgrade(sv);
745 XSprePUSH; PUSHi((IV)RETVAL);
746 }
747 XSRETURN(1);
748}
749
750XS(XS_utf8_downgrade)
751{
97aff369 752 dVAR;
1b026014
NIS
753 dXSARGS;
754 if (items < 1 || items > 2)
afa74d42 755 croak_xs_usage(cv, "sv, failok=0");
c4420975
AL
756 else {
757 SV * const sv = ST(0);
6867be6d
AL
758 const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1));
759 const bool RETVAL = sv_utf8_downgrade(sv, failok);
1b026014 760
1b026014
NIS
761 ST(0) = boolSV(RETVAL);
762 sv_2mortal(ST(0));
763 }
764 XSRETURN(1);
765}
766
767XS(XS_utf8_native_to_unicode)
768{
97aff369 769 dVAR;
1b026014 770 dXSARGS;
6867be6d 771 const UV uv = SvUV(ST(0));
b7953727
JH
772
773 if (items > 1)
afa74d42 774 croak_xs_usage(cv, "sv");
b7953727 775
1b026014
NIS
776 ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv)));
777 XSRETURN(1);
778}
779
780XS(XS_utf8_unicode_to_native)
781{
97aff369 782 dVAR;
1b026014 783 dXSARGS;
6867be6d 784 const UV uv = SvUV(ST(0));
b7953727
JH
785
786 if (items > 1)
afa74d42 787 croak_xs_usage(cv, "sv");
b7953727 788
1b026014
NIS
789 ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv)));
790 XSRETURN(1);
791}
792
14a976d6 793XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */
29569577 794{
97aff369 795 dVAR;
29569577 796 dXSARGS;
c4420975 797 SV * const sv = SvRV(ST(0));
58c0efa5 798 PERL_UNUSED_ARG(cv);
6867be6d 799
29569577
JH
800 if (items == 1) {
801 if (SvREADONLY(sv))
802 XSRETURN_YES;
803 else
804 XSRETURN_NO;
805 }
806 else if (items == 2) {
807 if (SvTRUE(ST(1))) {
808 SvREADONLY_on(sv);
809 XSRETURN_YES;
810 }
811 else {
14a976d6 812 /* I hope you really know what you are doing. */
29569577
JH
813 SvREADONLY_off(sv);
814 XSRETURN_NO;
815 }
816 }
14a976d6 817 XSRETURN_UNDEF; /* Can't happen. */
29569577
JH
818}
819
14a976d6 820XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */
29569577 821{
97aff369 822 dVAR;
29569577 823 dXSARGS;
c4420975 824 SV * const sv = SvRV(ST(0));
58c0efa5 825 PERL_UNUSED_ARG(cv);
6867be6d 826
29569577 827 if (items == 1)
14a976d6 828 XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */
29569577 829 else if (items == 2) {
14a976d6 830 /* I hope you really know what you are doing. */
29569577
JH
831 SvREFCNT(sv) = SvIV(ST(1));
832 XSRETURN_IV(SvREFCNT(sv));
833 }
14a976d6 834 XSRETURN_UNDEF; /* Can't happen. */
29569577
JH
835}
836
f044d0d1 837XS(XS_Internals_hv_clear_placehold)
dfd4ef2f 838{
97aff369 839 dVAR;
dfd4ef2f 840 dXSARGS;
6867be6d 841
3540d4ce 842 if (items != 1)
afa74d42 843 croak_xs_usage(cv, "hv");
c4420975 844 else {
ef8f7699 845 HV * const hv = MUTABLE_HV(SvRV(ST(0)));
c4420975
AL
846 hv_clear_placeholders(hv);
847 XSRETURN(0);
848 }
dfd4ef2f 849}
39f7a870
JH
850
851XS(XS_PerlIO_get_layers)
852{
97aff369 853 dVAR;
39f7a870
JH
854 dXSARGS;
855 if (items < 1 || items % 2 == 0)
afa74d42 856 croak_xs_usage(cv, "filehandle[,args]");
5fef3b4a 857#ifdef USE_PERLIO
39f7a870
JH
858 {
859 SV * sv;
860 GV * gv;
861 IO * io;
862 bool input = TRUE;
863 bool details = FALSE;
864
865 if (items > 1) {
c4420975 866 SV * const *svp;
39f7a870 867 for (svp = MARK + 2; svp <= SP; svp += 2) {
c4420975
AL
868 SV * const * const varp = svp;
869 SV * const * const valp = svp + 1;
39f7a870 870 STRLEN klen;
c4420975 871 const char * const key = SvPV_const(*varp, klen);
39f7a870
JH
872
873 switch (*key) {
874 case 'i':
875 if (klen == 5 && memEQ(key, "input", 5)) {
876 input = SvTRUE(*valp);
877 break;
878 }
879 goto fail;
880 case 'o':
881 if (klen == 6 && memEQ(key, "output", 6)) {
882 input = !SvTRUE(*valp);
883 break;
884 }
885 goto fail;
886 case 'd':
887 if (klen == 7 && memEQ(key, "details", 7)) {
888 details = SvTRUE(*valp);
889 break;
890 }
891 goto fail;
892 default:
893 fail:
894 Perl_croak(aTHX_
895 "get_layers: unknown argument '%s'",
896 key);
897 }
898 }
899
900 SP -= (items - 1);
901 }
902
903 sv = POPs;
159b6efe 904 gv = MUTABLE_GV(sv);
39f7a870
JH
905
906 if (!isGV(sv)) {
907 if (SvROK(sv) && isGV(SvRV(sv)))
159b6efe 908 gv = MUTABLE_GV(SvRV(sv));
671d49be 909 else if (SvPOKp(sv))
f776e3cd 910 gv = gv_fetchsv(sv, 0, SVt_PVIO);
39f7a870
JH
911 }
912
913 if (gv && (io = GvIO(gv))) {
c4420975 914 AV* const av = PerlIO_get_layers(aTHX_ input ?
39f7a870
JH
915 IoIFP(io) : IoOFP(io));
916 I32 i;
c4420975 917 const I32 last = av_len(av);
39f7a870
JH
918 I32 nitem = 0;
919
920 for (i = last; i >= 0; i -= 3) {
c4420975
AL
921 SV * const * const namsvp = av_fetch(av, i - 2, FALSE);
922 SV * const * const argsvp = av_fetch(av, i - 1, FALSE);
923 SV * const * const flgsvp = av_fetch(av, i, FALSE);
39f7a870 924
c4420975
AL
925 const bool namok = namsvp && *namsvp && SvPOK(*namsvp);
926 const bool argok = argsvp && *argsvp && SvPOK(*argsvp);
927 const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp);
39f7a870
JH
928
929 if (details) {
92e45a3e
NC
930 /* Indents of 5? Yuck. */
931 /* We know that PerlIO_get_layers creates a new SV for
932 the name and flags, so we can just take a reference
933 and "steal" it when we free the AV below. */
ec3bab8e 934 XPUSHs(namok
92e45a3e 935 ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))
ec3bab8e
NC
936 : &PL_sv_undef);
937 XPUSHs(argok
92e45a3e
NC
938 ? newSVpvn_flags(SvPVX_const(*argsvp),
939 SvCUR(*argsvp),
940 (SvUTF8(*argsvp) ? SVf_UTF8 : 0)
941 | SVs_TEMP)
942 : &PL_sv_undef);
96ccaf53 943 XPUSHs(flgok
92e45a3e 944 ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp))
ec3bab8e 945 : &PL_sv_undef);
39f7a870
JH
946 nitem += 3;
947 }
948 else {
949 if (namok && argok)
1eb9e81d 950 XPUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")",
be2597df 951 SVfARG(*namsvp),
1eb9e81d 952 SVfARG(*argsvp))));
39f7a870 953 else if (namok)
92e45a3e 954 XPUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)));
39f7a870
JH
955 else
956 XPUSHs(&PL_sv_undef);
957 nitem++;
958 if (flgok) {
c4420975 959 const IV flags = SvIVX(*flgsvp);
39f7a870
JH
960
961 if (flags & PERLIO_F_UTF8) {
84bafc02 962 XPUSHs(newSVpvs_flags("utf8", SVs_TEMP));
39f7a870
JH
963 nitem++;
964 }
965 }
966 }
967 }
968
969 SvREFCNT_dec(av);
970
971 XSRETURN(nitem);
972 }
973 }
5fef3b4a 974#endif
39f7a870
JH
975
976 XSRETURN(0);
977}
978
9a7034eb 979XS(XS_Internals_hash_seed)
c910b28a 980{
97aff369 981 dVAR;
c85d3f85
NC
982 /* Using dXSARGS would also have dITEM and dSP,
983 * which define 2 unused local variables. */
557b887a 984 dAXMARK;
53c1dcc0 985 PERL_UNUSED_ARG(cv);
ad73156c 986 PERL_UNUSED_VAR(mark);
81eaca17 987 XSRETURN_UV(PERL_HASH_SEED);
c910b28a
JH
988}
989
008fb0c0 990XS(XS_Internals_rehash_seed)
8e90d776 991{
97aff369 992 dVAR;
8e90d776
NC
993 /* Using dXSARGS would also have dITEM and dSP,
994 * which define 2 unused local variables. */
557b887a 995 dAXMARK;
53c1dcc0 996 PERL_UNUSED_ARG(cv);
ad73156c 997 PERL_UNUSED_VAR(mark);
008fb0c0 998 XSRETURN_UV(PL_rehash_seed);
8e90d776
NC
999}
1000
05619474
NC
1001XS(XS_Internals_HvREHASH) /* Subject to change */
1002{
97aff369 1003 dVAR;
05619474 1004 dXSARGS;
93c51217 1005 PERL_UNUSED_ARG(cv);
05619474 1006 if (SvROK(ST(0))) {
ef8f7699 1007 const HV * const hv = (const HV *) SvRV(ST(0));
05619474
NC
1008 if (items == 1 && SvTYPE(hv) == SVt_PVHV) {
1009 if (HvREHASH(hv))
1010 XSRETURN_YES;
1011 else
1012 XSRETURN_NO;
1013 }
1014 }
1015 Perl_croak(aTHX_ "Internals::HvREHASH $hashref");
1016}
241d1a3b 1017
792477b9
YO
1018XS(XS_mauve_reftype)
1019{
1020 SV *sv;
1021 dVAR;
1022 dXSARGS;
1023 PERL_UNUSED_VAR(cv);
1024
1025 if (items != 1)
1026 croak_xs_usage(cv, "sv");
1027
1028 SP -= items;
1029 sv = (SV*)ST(0);
1030
1031 if (SvMAGICAL(sv))
1032 mg_get(sv);
1033 if (!SvROK(sv)) {
1034 XSRETURN_NO;
1035 } else {
1036 STRLEN len;
1037 char *type= (char *)sv_reftype_len(SvRV(sv),FALSE,&len);
1038 XPUSHs(sv_2mortal(newSVpv(type,len)));
1039 }
1040}
1041
1042XS(XS_mauve_refaddr)
1043{
1044 SV *sv;
1045 dVAR;
1046 dXSARGS;
1047 PERL_UNUSED_VAR(cv);
1048
1049 if (items != 1)
1050 croak_xs_usage(cv, "sv");
1051
1052 SP -= items;
1053 sv = (SV*)ST(0);
1054
1055 if (SvMAGICAL(sv))
1056 mg_get(sv);
1057 if (!SvROK(sv)) {
1058 XSRETURN_NO;
1059 } else {
1060 XPUSHs(sv_2mortal(newSVuv(PTR2UV(SvRV(sv)))));
1061 }
1062}
1063
1064XS(XS_mauve_blessed)
1065{
1066 SV *sv;
1067 dVAR;
1068 dXSARGS;
1069 PERL_UNUSED_VAR(cv);
1070
1071 if (items != 1)
1072 croak_xs_usage(cv, "sv");
1073
1074 SP -= items;
1075 sv = (SV*)ST(0);
1076
1077 if (SvMAGICAL(sv))
1078 mg_get(sv);
1079 if ( SvROK(sv) && SvOBJECT(SvRV(sv)) ) {
1080 STRLEN len;
1081 char *type= (char *)sv_reftype_len(SvRV(sv),TRUE,&len);
1082 XPUSHs(sv_2mortal(newSVpv(type,len)));
1083 } else {
1084 XPUSHs(sv_2mortal(newSVpv("",0)));
1085 }
1086}
1087
1088XS(XS_mauve_weaken)
1089{
1090 SV *sv;
1091 dVAR;
1092 dXSARGS;
1093 PERL_UNUSED_VAR(cv);
1094
1095 if (items != 1)
1096 croak_xs_usage(cv, "sv");
1097
1098 SP -= items;
1099 sv = (SV*)ST(0);
1100
1101 if (SvMAGICAL(sv))
1102 mg_get(sv);
1103 sv_rvweaken(sv);
1104 XSRETURN_EMPTY;
1105}
1106
1107XS(XS_mauve_isweak)
1108{
1109 dVAR;
1110 dXSARGS;
1111 if (items != 1)
1112 croak_xs_usage(cv, "sv");
1113 {
1114 SV * sv = ST(0);
1115 if (SvMAGICAL(sv))
1116 mg_get(sv);
1117 ST(0) = boolSV(SvROK(sv) && SvWEAKREF(sv));
1118 XSRETURN(1);
1119 }
1120 XSRETURN(1);
1121}
1122
80305961
YO
1123XS(XS_re_is_regexp)
1124{
1125 dVAR;
1126 dXSARGS;
f7e71195
AB
1127 PERL_UNUSED_VAR(cv);
1128
80305961 1129 if (items != 1)
afa74d42 1130 croak_xs_usage(cv, "sv");
f7e71195 1131
80305961 1132 SP -= items;
f7e71195
AB
1133
1134 if (SvRXOK(ST(0))) {
1135 XSRETURN_YES;
1136 } else {
1137 XSRETURN_NO;
80305961
YO
1138 }
1139}
1140
192b9cd1 1141XS(XS_re_regnames_count)
80305961 1142{
192b9cd1
AB
1143 REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1144 SV * ret;
80305961
YO
1145 dVAR;
1146 dXSARGS;
192b9cd1
AB
1147
1148 if (items != 0)
afa74d42 1149 croak_xs_usage(cv, "");
192b9cd1
AB
1150
1151 SP -= items;
1152
1153 if (!rx)
1154 XSRETURN_UNDEF;
1155
1156 ret = CALLREG_NAMED_BUFF_COUNT(rx);
1157
1158 SPAGAIN;
1159
1160 if (ret) {
ec83ea38 1161 mXPUSHs(ret);
192b9cd1
AB
1162 PUTBACK;
1163 return;
1164 } else {
1165 XSRETURN_UNDEF;
1166 }
1167}
1168
1169XS(XS_re_regname)
1170{
1171 dVAR;
1172 dXSARGS;
1173 REGEXP * rx;
1174 U32 flags;
1175 SV * ret;
1176
28d8d7f4 1177 if (items < 1 || items > 2)
afa74d42 1178 croak_xs_usage(cv, "name[, all ]");
192b9cd1 1179
80305961 1180 SP -= items;
80305961 1181
192b9cd1
AB
1182 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1183
1184 if (!rx)
1185 XSRETURN_UNDEF;
1186
1187 if (items == 2 && SvTRUE(ST(1))) {
f1b875a0 1188 flags = RXapif_ALL;
192b9cd1 1189 } else {
f1b875a0 1190 flags = RXapif_ONE;
80305961 1191 }
f1b875a0 1192 ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME));
192b9cd1
AB
1193
1194 if (ret) {
ec83ea38 1195 mXPUSHs(ret);
192b9cd1
AB
1196 XSRETURN(1);
1197 }
1198 XSRETURN_UNDEF;
80305961
YO
1199}
1200
192b9cd1 1201
80305961
YO
1202XS(XS_re_regnames)
1203{
192b9cd1 1204 dVAR;
80305961 1205 dXSARGS;
192b9cd1
AB
1206 REGEXP * rx;
1207 U32 flags;
1208 SV *ret;
1209 AV *av;
1210 I32 length;
1211 I32 i;
1212 SV **entry;
1213
1214 if (items > 1)
afa74d42 1215 croak_xs_usage(cv, "[all]");
192b9cd1
AB
1216
1217 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1218
1219 if (!rx)
1220 XSRETURN_UNDEF;
1221
1222 if (items == 1 && SvTRUE(ST(0))) {
f1b875a0 1223 flags = RXapif_ALL;
192b9cd1 1224 } else {
f1b875a0 1225 flags = RXapif_ONE;
192b9cd1
AB
1226 }
1227
80305961 1228 SP -= items;
80305961 1229
f1b875a0 1230 ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES));
192b9cd1
AB
1231
1232 SPAGAIN;
1233
1234 SP -= items;
1235
1236 if (!ret)
1237 XSRETURN_UNDEF;
1238
502c6561 1239 av = MUTABLE_AV(SvRV(ret));
192b9cd1
AB
1240 length = av_len(av);
1241
1242 for (i = 0; i <= length; i++) {
1243 entry = av_fetch(av, i, FALSE);
1244
1245 if (!entry)
1246 Perl_croak(aTHX_ "NULL array element in re::regnames()");
1247
ec83ea38 1248 mXPUSHs(SvREFCNT_inc_simple_NN(*entry));
80305961 1249 }
ec83ea38
MHM
1250
1251 SvREFCNT_dec(ret);
1252
192b9cd1
AB
1253 PUTBACK;
1254 return;
80305961
YO
1255}
1256
192c1e27
JH
1257XS(XS_re_regexp_pattern)
1258{
1259 dVAR;
1260 dXSARGS;
1261 REGEXP *re;
192c1e27
JH
1262
1263 if (items != 1)
afa74d42 1264 croak_xs_usage(cv, "sv");
192c1e27
JH
1265
1266 SP -= items;
1267
1268 /*
1269 Checks if a reference is a regex or not. If the parameter is
1270 not a ref, or is not the result of a qr// then returns false
1271 in scalar context and an empty list in list context.
1272 Otherwise in list context it returns the pattern and the
1273 modifiers, in scalar context it returns the pattern just as it
1274 would if the qr// was stringified normally, regardless as
1275 to the class of the variable and any strigification overloads
1276 on the object.
1277 */
1278
1279 if ((re = SvRX(ST(0)))) /* assign deliberate */
1280 {
22c985d5 1281 /* Houston, we have a regex! */
192c1e27
JH
1282 SV *pattern;
1283 STRLEN left = 0;
525aa621 1284 char reflags[sizeof(INT_PAT_MODS)];
192c1e27
JH
1285
1286 if ( GIMME_V == G_ARRAY ) {
1287 /*
1288 we are in list context so stringify
1289 the modifiers that apply. We ignore "negative
1290 modifiers" in this scenario.
1291 */
1292
1293 const char *fptr = INT_PAT_MODS;
1294 char ch;
1295 U16 match_flags = (U16)((RX_EXTFLAGS(re) & PMf_COMPILETIME)
1296 >> RXf_PMf_STD_PMMOD_SHIFT);
1297
1298 while((ch = *fptr++)) {
1299 if(match_flags & 1) {
1300 reflags[left++] = ch;
1301 }
1302 match_flags >>= 1;
1303 }
1304
fb632ce3
NC
1305 pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re),
1306 (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP);
192c1e27
JH
1307
1308 /* return the pattern and the modifiers */
1309 XPUSHs(pattern);
fb632ce3 1310 XPUSHs(newSVpvn_flags(reflags, left, SVs_TEMP));
192c1e27
JH
1311 XSRETURN(2);
1312 } else {
1313 /* Scalar, so use the string that Perl would return */
1314 /* return the pattern in (?msix:..) format */
1315#if PERL_VERSION >= 11
daba3364 1316 pattern = sv_2mortal(newSVsv(MUTABLE_SV(re)));
192c1e27 1317#else
fb632ce3
NC
1318 pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re),
1319 (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP);
192c1e27
JH
1320#endif
1321 XPUSHs(pattern);
1322 XSRETURN(1);
1323 }
1324 } else {
1325 /* It ain't a regexp folks */
1326 if ( GIMME_V == G_ARRAY ) {
1327 /* return the empty list */
1328 XSRETURN_UNDEF;
1329 } else {
1330 /* Because of the (?:..) wrapping involved in a
1331 stringified pattern it is impossible to get a
1332 result for a real regexp that would evaluate to
1333 false. Therefore we can return PL_sv_no to signify
1334 that the object is not a regex, this means that one
1335 can say
1336
1337 if (regex($might_be_a_regex) eq '(?:foo)') { }
1338
1339 and not worry about undefined values.
1340 */
1341 XSRETURN_NO;
1342 }
1343 }
1344 /* NOT-REACHED */
1345}
1346
192b9cd1 1347XS(XS_Tie_Hash_NamedCapture_FETCH)
80305961 1348{
192b9cd1 1349 dVAR;
80305961 1350 dXSARGS;
192b9cd1
AB
1351 REGEXP * rx;
1352 U32 flags;
1353 SV * ret;
1354
1355 if (items != 2)
afa74d42 1356 croak_xs_usage(cv, "$key, $flags");
192b9cd1
AB
1357
1358 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1359
1d021cc8 1360 if (!rx || !SvROK(ST(0)))
192b9cd1
AB
1361 XSRETURN_UNDEF;
1362
80305961 1363 SP -= items;
192b9cd1 1364
bd7e438e 1365 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1
AB
1366 ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(1), flags);
1367
1368 SPAGAIN;
1369
1370 if (ret) {
ec83ea38 1371 mXPUSHs(ret);
192b9cd1
AB
1372 PUTBACK;
1373 return;
1374 }
1375 XSRETURN_UNDEF;
1376}
1377
1378XS(XS_Tie_Hash_NamedCapture_STORE)
1379{
1380 dVAR;
1381 dXSARGS;
1382 REGEXP * rx;
1383 U32 flags;
1384
1385 if (items != 3)
afa74d42 1386 croak_xs_usage(cv, "$key, $value, $flags");
192b9cd1
AB
1387
1388 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1389
1d021cc8 1390 if (!rx || !SvROK(ST(0))) {
192b9cd1 1391 if (!PL_localizing)
6ad8f254 1392 Perl_croak_no_modify(aTHX);
192b9cd1 1393 else
28d8d7f4 1394 XSRETURN_UNDEF;
80305961 1395 }
192b9cd1
AB
1396
1397 SP -= items;
1398
bd7e438e 1399 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1 1400 CALLREG_NAMED_BUFF_STORE(rx,ST(1), ST(2), flags);
80305961
YO
1401}
1402
192b9cd1
AB
1403XS(XS_Tie_Hash_NamedCapture_DELETE)
1404{
1405 dVAR;
1406 dXSARGS;
1407 REGEXP * rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1408 U32 flags;
80305961 1409
192b9cd1 1410 if (items != 2)
afa74d42 1411 croak_xs_usage(cv, "$key, $flags");
192b9cd1 1412
1d021cc8 1413 if (!rx || !SvROK(ST(0)))
6ad8f254 1414 Perl_croak_no_modify(aTHX);
192b9cd1
AB
1415
1416 SP -= items;
1417
bd7e438e 1418 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1
AB
1419 CALLREG_NAMED_BUFF_DELETE(rx, ST(1), flags);
1420}
1421
1422XS(XS_Tie_Hash_NamedCapture_CLEAR)
80305961 1423{
192b9cd1 1424 dVAR;
80305961 1425 dXSARGS;
192b9cd1
AB
1426 REGEXP * rx;
1427 U32 flags;
1428
1429 if (items != 1)
afa74d42 1430 croak_xs_usage(cv, "$flags");
192b9cd1
AB
1431
1432 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1433
1d021cc8 1434 if (!rx || !SvROK(ST(0)))
6ad8f254 1435 Perl_croak_no_modify(aTHX);
192b9cd1 1436
80305961 1437 SP -= items;
80305961 1438
bd7e438e 1439 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1
AB
1440 CALLREG_NAMED_BUFF_CLEAR(rx, flags);
1441}
1442
1443XS(XS_Tie_Hash_NamedCapture_EXISTS)
1444{
1445 dVAR;
1446 dXSARGS;
1447 REGEXP * rx;
1448 U32 flags;
1449 SV * ret;
1450
1451 if (items != 2)
afa74d42 1452 croak_xs_usage(cv, "$key, $flags");
192b9cd1
AB
1453
1454 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1455
1d021cc8 1456 if (!rx || !SvROK(ST(0)))
28d8d7f4 1457 XSRETURN_UNDEF;
192b9cd1
AB
1458
1459 SP -= items;
1460
bd7e438e 1461 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1
AB
1462 ret = CALLREG_NAMED_BUFF_EXISTS(rx, ST(1), flags);
1463
1464 SPAGAIN;
1465
1466 XPUSHs(ret);
80305961
YO
1467 PUTBACK;
1468 return;
80305961
YO
1469}
1470
86aa3d53 1471XS(XS_Tie_Hash_NamedCapture_FIRSTK)
192b9cd1
AB
1472{
1473 dVAR;
1474 dXSARGS;
1475 REGEXP * rx;
1476 U32 flags;
1477 SV * ret;
80305961 1478
192b9cd1 1479 if (items != 1)
afa74d42 1480 croak_xs_usage(cv, "");
192b9cd1
AB
1481
1482 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1483
1d021cc8 1484 if (!rx || !SvROK(ST(0)))
192b9cd1
AB
1485 XSRETURN_UNDEF;
1486
1487 SP -= items;
1488
bd7e438e 1489 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1
AB
1490 ret = CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags);
1491
1492 SPAGAIN;
1493
1494 if (ret) {
ec83ea38 1495 mXPUSHs(ret);
192b9cd1
AB
1496 PUTBACK;
1497 } else {
1498 XSRETURN_UNDEF;
1499 }
1500
1501}
1502
86aa3d53 1503XS(XS_Tie_Hash_NamedCapture_NEXTK)
80305961 1504{
192b9cd1 1505 dVAR;
80305961 1506 dXSARGS;
192b9cd1
AB
1507 REGEXP * rx;
1508 U32 flags;
1509 SV * ret;
1510
1511 if (items != 2)
afa74d42 1512 croak_xs_usage(cv, "$lastkey");
192b9cd1
AB
1513
1514 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1515
1d021cc8 1516 if (!rx || !SvROK(ST(0)))
192b9cd1 1517 XSRETURN_UNDEF;
80305961 1518
80305961 1519 SP -= items;
192b9cd1 1520
bd7e438e 1521 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1
AB
1522 ret = CALLREG_NAMED_BUFF_NEXTKEY(rx, ST(1), flags);
1523
1524 SPAGAIN;
1525
1526 if (ret) {
ec83ea38 1527 mXPUSHs(ret);
80305961
YO
1528 } else {
1529 XSRETURN_UNDEF;
1530 }
1531 PUTBACK;
192b9cd1
AB
1532}
1533
1534XS(XS_Tie_Hash_NamedCapture_SCALAR)
1535{
1536 dVAR;
1537 dXSARGS;
1538 REGEXP * rx;
1539 U32 flags;
1540 SV * ret;
1541
1542 if (items != 1)
afa74d42 1543 croak_xs_usage(cv, "");
192b9cd1
AB
1544
1545 rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL;
1546
1d021cc8 1547 if (!rx || !SvROK(ST(0)))
192b9cd1
AB
1548 XSRETURN_UNDEF;
1549
1550 SP -= items;
1551
bd7e438e 1552 flags = (U32)SvUV(SvRV(MUTABLE_SV(ST(0))));
192b9cd1
AB
1553 ret = CALLREG_NAMED_BUFF_SCALAR(rx, flags);
1554
1555 SPAGAIN;
1556
1557 if (ret) {
ec83ea38 1558 mXPUSHs(ret);
192b9cd1
AB
1559 PUTBACK;
1560 return;
1561 } else {
1562 XSRETURN_UNDEF;
1563 }
1564}
1565
1566XS(XS_Tie_Hash_NamedCapture_flags)
1567{
1568 dVAR;
1569 dXSARGS;
1570
1571 if (items != 0)
afa74d42 1572 croak_xs_usage(cv, "");
192b9cd1 1573
6e449a3a
MHM
1574 mXPUSHu(RXapif_ONE);
1575 mXPUSHu(RXapif_ALL);
192b9cd1
AB
1576 PUTBACK;
1577 return;
80305961
YO
1578}
1579
eff5b9d5
NC
1580struct xsub_details {
1581 const char *name;
1582 XSUBADDR_t xsub;
1583 const char *proto;
1584};
1585
1586struct xsub_details details[] = {
1587 {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL},
1588 {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL},
1589 {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL},
1590 {"UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, NULL},
1591 {"version::()", XS_version_noop, NULL},
1592 {"version::new", XS_version_new, NULL},
1593 {"version::parse", XS_version_new, NULL},
1594 {"version::(\"\"", XS_version_stringify, NULL},
1595 {"version::stringify", XS_version_stringify, NULL},
1596 {"version::(0+", XS_version_numify, NULL},
1597 {"version::numify", XS_version_numify, NULL},
1598 {"version::normal", XS_version_normal, NULL},
1599 {"version::(cmp", XS_version_vcmp, NULL},
1600 {"version::(<=>", XS_version_vcmp, NULL},
1601 {"version::vcmp", XS_version_vcmp, NULL},
1602 {"version::(bool", XS_version_boolean, NULL},
1603 {"version::boolean", XS_version_boolean, NULL},
1604 {"version::(nomethod", XS_version_noop, NULL},
1605 {"version::noop", XS_version_noop, NULL},
1606 {"version::is_alpha", XS_version_is_alpha, NULL},
1607 {"version::qv", XS_version_qv, NULL},
1608 {"version::declare", XS_version_qv, NULL},
1609 {"version::is_qv", XS_version_is_qv, NULL},
1610 {"utf8::is_utf8", XS_utf8_is_utf8, NULL},
1611 {"utf8::valid", XS_utf8_valid, NULL},
1612 {"utf8::encode", XS_utf8_encode, NULL},
1613 {"utf8::decode", XS_utf8_decode, NULL},
1614 {"utf8::upgrade", XS_utf8_upgrade, NULL},
1615 {"utf8::downgrade", XS_utf8_downgrade, NULL},
1616 {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL},
1617 {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL},
1618 {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"},
1619 {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"},
1620 {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"},
1621 {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"},
1622 {"Internals::hash_seed", XS_Internals_hash_seed, ""},
1623 {"Internals::rehash_seed", XS_Internals_rehash_seed, ""},
1624 {"Internals::HvREHASH", XS_Internals_HvREHASH, "\\%"},
1625 {"re::is_regexp", XS_re_is_regexp, "$"},
1626 {"re::regname", XS_re_regname, ";$$"},
1627 {"re::regnames", XS_re_regnames, ";$"},
1628 {"re::regnames_count", XS_re_regnames_count, ""},
1629 {"re::regexp_pattern", XS_re_regexp_pattern, "$"},
1630 {"Tie::Hash::NamedCapture::FETCH", XS_Tie_Hash_NamedCapture_FETCH, NULL},
1631 {"Tie::Hash::NamedCapture::STORE", XS_Tie_Hash_NamedCapture_STORE, NULL},
1632 {"Tie::Hash::NamedCapture::DELETE", XS_Tie_Hash_NamedCapture_DELETE, NULL},
1633 {"Tie::Hash::NamedCapture::CLEAR", XS_Tie_Hash_NamedCapture_CLEAR, NULL},
1634 {"Tie::Hash::NamedCapture::EXISTS", XS_Tie_Hash_NamedCapture_EXISTS, NULL},
1635 {"Tie::Hash::NamedCapture::FIRSTKEY", XS_Tie_Hash_NamedCapture_FIRSTK, NULL},
1636 {"Tie::Hash::NamedCapture::NEXTKEY", XS_Tie_Hash_NamedCapture_NEXTK, NULL},
1637 {"Tie::Hash::NamedCapture::SCALAR", XS_Tie_Hash_NamedCapture_SCALAR, NULL},
1638 {"Tie::Hash::NamedCapture::flags", XS_Tie_Hash_NamedCapture_flags, NULL}
792477b9
YO
1639 ,{"mauve::reftype", XS_mauve_reftype, "$"}
1640 ,{"mauve::refaddr", XS_mauve_refaddr, "$"}
1641 ,{"mauve::blessed", XS_mauve_blessed, "$"}
1642 ,{"mauve::weaken", XS_mauve_weaken, "$"}
1643 ,{"mauve::isweak", XS_mauve_isweak, "$"}
eff5b9d5
NC
1644};
1645
1646void
1647Perl_boot_core_UNIVERSAL(pTHX)
1648{
1649 dVAR;
1650 static const char file[] = __FILE__;
1651 struct xsub_details *xsub = details;
1652 const struct xsub_details *end
1653 = details + sizeof(details) / sizeof(details[0]);
1654
1655 do {
1656 newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0);
1657 } while (++xsub < end);
1658
1659 /* register the overloading (type 'A') magic */
1660 PL_amagic_generation++;
1661
1662 /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */
1663 CvFILE(newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL))
1664 = (char *)file;
1665}
80305961 1666
241d1a3b
NC
1667/*
1668 * Local variables:
1669 * c-indentation-style: bsd
1670 * c-basic-offset: 4
1671 * indent-tabs-mode: t
1672 * End:
1673 *
37442d52
RGS
1674 * ex: set ts=8 sts=4 sw=4 noet:
1675 */