Commit | Line | Data |
---|---|---|
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 | { |
a49ba3fc | 44 | const struct mro_meta *const meta = HvMROMETA(stash); |
4340b386 | 45 | HV *isa = meta->isa; |
a49ba3fc | 46 | const HV *our_stash; |
6d4a7be2 | 47 | |
7918f24d NC |
48 | PERL_ARGS_ASSERT_ISA_LOOKUP; |
49 | ||
4340b386 FC |
50 | if (!isa) { |
51 | (void)mro_get_linear_isa(stash); | |
52 | isa = meta->isa; | |
53 | } | |
54 | ||
c7abbf64 | 55 | if (hv_common(isa, NULL, name, len, ( flags & SVf_UTF8 ? HVhek_UTF8 : 0), |
a49ba3fc NC |
56 | HV_FETCH_ISEXISTS, NULL, 0)) { |
57 | /* Direct name lookup worked. */ | |
a9ec700e | 58 | return TRUE; |
a49ba3fc | 59 | } |
6d4a7be2 | 60 | |
a49ba3fc | 61 | /* A stash/class can go by many names (ie. User == main::User), so |
81a5123c FC |
62 | we use the HvENAME in the stash itself, which is canonical, falling |
63 | back to HvNAME if necessary. */ | |
c7abbf64 | 64 | our_stash = gv_stashpvn(name, len, flags); |
a49ba3fc NC |
65 | |
66 | if (our_stash) { | |
81a5123c FC |
67 | HEK *canon_name = HvENAME_HEK(our_stash); |
68 | if (!canon_name) canon_name = HvNAME_HEK(our_stash); | |
316ebaf2 | 69 | assert(canon_name); |
a49ba3fc NC |
70 | if (hv_common(isa, NULL, HEK_KEY(canon_name), HEK_LEN(canon_name), |
71 | HEK_FLAGS(canon_name), | |
72 | HV_FETCH_ISEXISTS, NULL, HEK_HASH(canon_name))) { | |
e1a479c5 | 73 | return TRUE; |
a49ba3fc | 74 | } |
6d4a7be2 | 75 | } |
76 | ||
a9ec700e | 77 | return FALSE; |
6d4a7be2 | 78 | } |
79 | ||
954c1994 | 80 | /* |
ccfc67b7 JH |
81 | =head1 SV Manipulation Functions |
82 | ||
c7abbf64 | 83 | =for apidoc sv_derived_from_pvn |
954c1994 | 84 | |
6885da0e | 85 | Returns a boolean indicating whether the SV is derived from the specified class |
86 | I<at the C level>. To check derivation at the Perl level, call C<isa()> as a | |
87 | normal Perl method. | |
954c1994 | 88 | |
c7abbf64 BF |
89 | Currently, the only significant value for C<flags> is SVf_UTF8. |
90 | ||
91 | =cut | |
92 | ||
93 | =for apidoc sv_derived_from_sv | |
94 | ||
95 | Exactly like L</sv_derived_from_pvn>, but takes the name string in the form | |
96 | of an SV instead of a string/length pair. | |
97 | ||
98 | =cut | |
99 | ||
100 | */ | |
101 | ||
102 | bool | |
103 | Perl_sv_derived_from_sv(pTHX_ SV *sv, SV *namesv, U32 flags) | |
104 | { | |
105 | char *namepv; | |
106 | STRLEN namelen; | |
107 | PERL_ARGS_ASSERT_SV_DERIVED_FROM_SV; | |
108 | namepv = SvPV(namesv, namelen); | |
109 | if (SvUTF8(namesv)) | |
110 | flags |= SVf_UTF8; | |
111 | return sv_derived_from_pvn(sv, namepv, namelen, flags); | |
112 | } | |
113 | ||
114 | /* | |
115 | =for apidoc sv_derived_from | |
116 | ||
117 | Exactly like L</sv_derived_from_pv>, but doesn't take a C<flags> parameter. | |
118 | ||
954c1994 GS |
119 | =cut |
120 | */ | |
121 | ||
55497cff | 122 | bool |
15f169a1 | 123 | Perl_sv_derived_from(pTHX_ SV *sv, const char *const name) |
55497cff | 124 | { |
c7abbf64 BF |
125 | PERL_ARGS_ASSERT_SV_DERIVED_FROM; |
126 | return sv_derived_from_pvn(sv, name, strlen(name), 0); | |
127 | } | |
128 | ||
129 | /* | |
130 | =for apidoc sv_derived_from_pv | |
131 | ||
132 | Exactly like L</sv_derived_from_pvn>, but takes a nul-terminated string | |
133 | instead of a string/length pair. | |
134 | ||
135 | =cut | |
136 | */ | |
137 | ||
138 | ||
139 | bool | |
140 | Perl_sv_derived_from_pv(pTHX_ SV *sv, const char *const name, U32 flags) | |
141 | { | |
142 | PERL_ARGS_ASSERT_SV_DERIVED_FROM_PV; | |
143 | return sv_derived_from_pvn(sv, name, strlen(name), flags); | |
144 | } | |
145 | ||
146 | bool | |
147 | Perl_sv_derived_from_pvn(pTHX_ SV *sv, const char *const name, const STRLEN len, U32 flags) | |
148 | { | |
0b6f4f5c | 149 | HV *stash; |
46e4b22b | 150 | |
c7abbf64 | 151 | PERL_ARGS_ASSERT_SV_DERIVED_FROM_PVN; |
7918f24d | 152 | |
5b295bef | 153 | SvGETMAGIC(sv); |
55497cff | 154 | |
bff39573 | 155 | if (SvROK(sv)) { |
0b6f4f5c | 156 | const char *type; |
55497cff | 157 | sv = SvRV(sv); |
158 | type = sv_reftype(sv,0); | |
0b6f4f5c AL |
159 | if (type && strEQ(type,name)) |
160 | return TRUE; | |
d70bfb04 JL |
161 | if (!SvOBJECT(sv)) |
162 | return FALSE; | |
163 | stash = SvSTASH(sv); | |
55497cff | 164 | } |
165 | else { | |
da51bb9b | 166 | stash = gv_stashsv(sv, 0); |
55497cff | 167 | } |
46e4b22b | 168 | |
d70bfb04 JL |
169 | if (stash && isa_lookup(stash, name, len, flags)) |
170 | return TRUE; | |
171 | ||
172 | stash = gv_stashpvs("UNIVERSAL", 0); | |
173 | return stash && isa_lookup(stash, name, len, flags); | |
55497cff | 174 | } |
175 | ||
cbc021f9 | 176 | /* |
d20c2c29 | 177 | =for apidoc sv_does_sv |
cbc021f9 | 178 | |
179 | Returns a boolean indicating whether the SV performs a specific, named role. | |
180 | The SV can be a Perl object or the name of a Perl class. | |
181 | ||
182 | =cut | |
183 | */ | |
184 | ||
1b026014 NIS |
185 | #include "XSUB.h" |
186 | ||
cbc021f9 | 187 | bool |
f778bcfd | 188 | Perl_sv_does_sv(pTHX_ SV *sv, SV *namesv, U32 flags) |
cbc021f9 | 189 | { |
f778bcfd | 190 | SV *classname; |
cbc021f9 | 191 | bool does_it; |
59e7186f | 192 | SV *methodname; |
cbc021f9 | 193 | dSP; |
7918f24d | 194 | |
f778bcfd BF |
195 | PERL_ARGS_ASSERT_SV_DOES_SV; |
196 | PERL_UNUSED_ARG(flags); | |
7918f24d | 197 | |
cbc021f9 | 198 | ENTER; |
199 | SAVETMPS; | |
200 | ||
201 | SvGETMAGIC(sv); | |
202 | ||
d96ab1b5 | 203 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) { |
7ce46f2a | 204 | LEAVE; |
cbc021f9 | 205 | return FALSE; |
7ce46f2a | 206 | } |
cbc021f9 | 207 | |
208 | if (sv_isobject(sv)) { | |
f778bcfd | 209 | classname = sv_ref(NULL,SvRV(sv),TRUE); |
cbc021f9 | 210 | } else { |
f778bcfd | 211 | classname = sv; |
cbc021f9 | 212 | } |
213 | ||
f778bcfd | 214 | if (sv_eq(classname, namesv)) { |
7ce46f2a | 215 | LEAVE; |
cbc021f9 | 216 | return TRUE; |
7ce46f2a | 217 | } |
cbc021f9 | 218 | |
219 | PUSHMARK(SP); | |
f778bcfd BF |
220 | EXTEND(SP, 2); |
221 | PUSHs(sv); | |
222 | PUSHs(namesv); | |
cbc021f9 | 223 | PUTBACK; |
224 | ||
84bafc02 | 225 | methodname = newSVpvs_flags("isa", SVs_TEMP); |
59e7186f RGS |
226 | /* ugly hack: use the SvSCREAM flag so S_method_common |
227 | * can figure out we're calling DOES() and not isa(), | |
228 | * and report eventual errors correctly. --rgs */ | |
229 | SvSCREAM_on(methodname); | |
230 | call_sv(methodname, G_SCALAR | G_METHOD); | |
cbc021f9 | 231 | SPAGAIN; |
232 | ||
233 | does_it = SvTRUE( TOPs ); | |
234 | FREETMPS; | |
235 | LEAVE; | |
236 | ||
237 | return does_it; | |
238 | } | |
239 | ||
afa74d42 | 240 | /* |
f778bcfd BF |
241 | =for apidoc sv_does |
242 | ||
d20c2c29 | 243 | Like L</sv_does_pv>, but doesn't take a C<flags> parameter. |
f778bcfd BF |
244 | |
245 | =cut | |
246 | */ | |
247 | ||
248 | bool | |
249 | Perl_sv_does(pTHX_ SV *sv, const char *const name) | |
250 | { | |
251 | PERL_ARGS_ASSERT_SV_DOES; | |
252 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP), 0); | |
253 | } | |
254 | ||
255 | /* | |
256 | =for apidoc sv_does_pv | |
257 | ||
7d892b8c | 258 | Like L</sv_does_sv>, but takes a nul-terminated string instead of an SV. |
f778bcfd BF |
259 | |
260 | =cut | |
261 | */ | |
262 | ||
263 | ||
264 | bool | |
265 | Perl_sv_does_pv(pTHX_ SV *sv, const char *const name, U32 flags) | |
266 | { | |
267 | PERL_ARGS_ASSERT_SV_DOES_PV; | |
268 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP | flags), flags); | |
269 | } | |
270 | ||
7d892b8c FC |
271 | /* |
272 | =for apidoc sv_does_pvn | |
273 | ||
274 | Like L</sv_does_sv>, but takes a string/length pair instead of an SV. | |
275 | ||
276 | =cut | |
277 | */ | |
278 | ||
f778bcfd BF |
279 | bool |
280 | Perl_sv_does_pvn(pTHX_ SV *sv, const char *const name, const STRLEN len, U32 flags) | |
281 | { | |
282 | PERL_ARGS_ASSERT_SV_DOES_PVN; | |
283 | ||
284 | return sv_does_sv(sv, newSVpvn_flags(name, len, flags | SVs_TEMP), flags); | |
285 | } | |
286 | ||
287 | /* | |
afa74d42 NC |
288 | =for apidoc croak_xs_usage |
289 | ||
290 | A specialised variant of C<croak()> for emitting the usage message for xsubs | |
291 | ||
292 | croak_xs_usage(cv, "eee_yow"); | |
293 | ||
294 | works out the package name and subroutine name from C<cv>, and then calls | |
72d33970 | 295 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: |
afa74d42 | 296 | |
8560fbdd KW |
297 | Perl_croak(aTHX_ "Usage: %"SVf"::%"SVf"(%s)", "ouch" "awk", |
298 | "eee_yow"); | |
afa74d42 NC |
299 | |
300 | =cut | |
301 | */ | |
302 | ||
303 | void | |
cb077ed2 | 304 | Perl_croak_xs_usage(const CV *const cv, const char *const params) |
afa74d42 | 305 | { |
ae77754a | 306 | /* Avoid CvGV as it requires aTHX. */ |
2eaf799e | 307 | const GV *gv = CvNAMED(cv) ? NULL : cv->sv_any->xcv_gv_u.xcv_gv; |
afa74d42 NC |
308 | |
309 | PERL_ARGS_ASSERT_CROAK_XS_USAGE; | |
310 | ||
2eaf799e | 311 | if (gv) got_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 | 324 | } else { |
2eaf799e FC |
325 | dTHX; |
326 | if ((gv = CvGV(cv))) goto got_gv; | |
327 | ||
afa74d42 | 328 | /* Pants. I don't think that it should be possible to get here. */ |
d3ee9aa5 | 329 | /* diag_listed_as: SKIPME */ |
6e9fdf66 | 330 | Perl_croak(aTHX_ "Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params); |
afa74d42 NC |
331 | } |
332 | } | |
55497cff | 333 | |
15eb3045 | 334 | XS(XS_UNIVERSAL_isa); /* prototype to pass -Wmissing-prototypes */ |
6d4a7be2 | 335 | XS(XS_UNIVERSAL_isa) |
336 | { | |
337 | dXSARGS; | |
6d4a7be2 | 338 | |
339 | if (items != 2) | |
afa74d42 | 340 | croak_xs_usage(cv, "reference, kind"); |
c4420975 AL |
341 | else { |
342 | SV * const sv = ST(0); | |
6d4a7be2 | 343 | |
c4420975 | 344 | SvGETMAGIC(sv); |
d3f7f2b2 | 345 | |
d96ab1b5 | 346 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) |
c4420975 | 347 | XSRETURN_UNDEF; |
f8f70380 | 348 | |
c7abbf64 | 349 | ST(0) = boolSV(sv_derived_from_sv(sv, ST(1), 0)); |
c4420975 AL |
350 | XSRETURN(1); |
351 | } | |
6d4a7be2 | 352 | } |
353 | ||
15eb3045 | 354 | XS(XS_UNIVERSAL_can); /* prototype to pass -Wmissing-prototypes */ |
6d4a7be2 | 355 | XS(XS_UNIVERSAL_can) |
356 | { | |
357 | dXSARGS; | |
358 | SV *sv; | |
6d4a7be2 | 359 | SV *rv; |
6f08146e | 360 | HV *pkg = NULL; |
2bde9ae6 | 361 | GV *iogv; |
6d4a7be2 | 362 | |
363 | if (items != 2) | |
afa74d42 | 364 | croak_xs_usage(cv, "object-ref, method"); |
6d4a7be2 | 365 | |
366 | sv = ST(0); | |
f8f70380 | 367 | |
5b295bef | 368 | SvGETMAGIC(sv); |
d3f7f2b2 | 369 | |
4178f891 FC |
370 | /* Reject undef and empty string. Note that the string form takes |
371 | precedence here over the numeric form, as (!1)->foo treats the | |
372 | invocant as the empty string, though it is a dualvar. */ | |
373 | if (!SvOK(sv) || (SvPOK(sv) && !SvCUR(sv))) | |
f8f70380 GS |
374 | XSRETURN_UNDEF; |
375 | ||
3280af22 | 376 | rv = &PL_sv_undef; |
6d4a7be2 | 377 | |
46e4b22b | 378 | if (SvROK(sv)) { |
daba3364 | 379 | sv = MUTABLE_SV(SvRV(sv)); |
46e4b22b | 380 | if (SvOBJECT(sv)) |
6f08146e | 381 | pkg = SvSTASH(sv); |
4178f891 FC |
382 | else if (isGV_with_GP(sv) && GvIO(sv)) |
383 | pkg = SvSTASH(GvIO(sv)); | |
6f08146e | 384 | } |
4178f891 FC |
385 | else if (isGV_with_GP(sv) && GvIO(sv)) |
386 | pkg = SvSTASH(GvIO(sv)); | |
2bde9ae6 FC |
387 | else if ((iogv = gv_fetchsv_nomg(sv, 0, SVt_PVIO)) && GvIO(iogv)) |
388 | pkg = SvSTASH(GvIO(iogv)); | |
6f08146e | 389 | else { |
da51bb9b | 390 | pkg = gv_stashsv(sv, 0); |
68b40612 | 391 | if (!pkg) |
7d59d161 | 392 | pkg = gv_stashpvs("UNIVERSAL", 0); |
6f08146e NIS |
393 | } |
394 | ||
395 | if (pkg) { | |
a00b390b | 396 | GV * const gv = gv_fetchmethod_sv_flags(pkg, ST(1), 0); |
dc848c6f | 397 | if (gv && isGV(gv)) |
daba3364 | 398 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
6d4a7be2 | 399 | } |
400 | ||
401 | ST(0) = rv; | |
402 | XSRETURN(1); | |
403 | } | |
404 | ||
15eb3045 | 405 | XS(XS_UNIVERSAL_DOES); /* prototype to pass -Wmissing-prototypes */ |
cbc021f9 | 406 | XS(XS_UNIVERSAL_DOES) |
407 | { | |
cbc021f9 | 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 | { | |
41be1fbd JH |
425 | dXSARGS; |
426 | if (items != 1) | |
afa74d42 | 427 | croak_xs_usage(cv, "sv"); |
c4420975 | 428 | else { |
76f73021 GF |
429 | SV * const sv = ST(0); |
430 | SvGETMAGIC(sv); | |
c4420975 AL |
431 | if (SvUTF8(sv)) |
432 | XSRETURN_YES; | |
433 | else | |
434 | XSRETURN_NO; | |
41be1fbd JH |
435 | } |
436 | XSRETURN_EMPTY; | |
8800c35a JH |
437 | } |
438 | ||
15eb3045 | 439 | XS(XS_utf8_valid); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
440 | XS(XS_utf8_valid) |
441 | { | |
41be1fbd JH |
442 | dXSARGS; |
443 | if (items != 1) | |
afa74d42 | 444 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
445 | else { |
446 | SV * const sv = ST(0); | |
447 | STRLEN len; | |
448 | const char * const s = SvPV_const(sv,len); | |
449 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
450 | XSRETURN_YES; | |
451 | else | |
452 | XSRETURN_NO; | |
453 | } | |
41be1fbd | 454 | XSRETURN_EMPTY; |
1b026014 NIS |
455 | } |
456 | ||
15eb3045 | 457 | XS(XS_utf8_encode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
458 | XS(XS_utf8_encode) |
459 | { | |
460 | dXSARGS; | |
461 | if (items != 1) | |
afa74d42 | 462 | croak_xs_usage(cv, "sv"); |
c4420975 | 463 | sv_utf8_encode(ST(0)); |
892f9127 | 464 | SvSETMAGIC(ST(0)); |
1b026014 NIS |
465 | XSRETURN_EMPTY; |
466 | } | |
467 | ||
15eb3045 | 468 | XS(XS_utf8_decode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
469 | XS(XS_utf8_decode) |
470 | { | |
471 | dXSARGS; | |
472 | if (items != 1) | |
afa74d42 | 473 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
474 | else { |
475 | SV * const sv = ST(0); | |
b2b7346b | 476 | bool RETVAL; |
c7102404 | 477 | SvPV_force_nolen(sv); |
b2b7346b | 478 | RETVAL = sv_utf8_decode(sv); |
77fc86ef | 479 | SvSETMAGIC(sv); |
1b026014 | 480 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
481 | } |
482 | XSRETURN(1); | |
483 | } | |
484 | ||
15eb3045 | 485 | XS(XS_utf8_upgrade); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
486 | XS(XS_utf8_upgrade) |
487 | { | |
488 | dXSARGS; | |
489 | if (items != 1) | |
afa74d42 | 490 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
491 | else { |
492 | SV * const sv = ST(0); | |
1b026014 NIS |
493 | STRLEN RETVAL; |
494 | dXSTARG; | |
495 | ||
496 | RETVAL = sv_utf8_upgrade(sv); | |
497 | XSprePUSH; PUSHi((IV)RETVAL); | |
498 | } | |
499 | XSRETURN(1); | |
500 | } | |
501 | ||
15eb3045 | 502 | XS(XS_utf8_downgrade); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
503 | XS(XS_utf8_downgrade) |
504 | { | |
505 | dXSARGS; | |
506 | if (items < 1 || items > 2) | |
afa74d42 | 507 | croak_xs_usage(cv, "sv, failok=0"); |
c4420975 AL |
508 | else { |
509 | SV * const sv = ST(0); | |
3ca75eca | 510 | const bool failok = (items < 2) ? 0 : SvTRUE(ST(1)) ? 1 : 0; |
6867be6d | 511 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 | 512 | |
1b026014 | 513 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
514 | } |
515 | XSRETURN(1); | |
516 | } | |
517 | ||
15eb3045 | 518 | XS(XS_utf8_native_to_unicode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
519 | XS(XS_utf8_native_to_unicode) |
520 | { | |
521 | dXSARGS; | |
6867be6d | 522 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
523 | |
524 | if (items > 1) | |
afa74d42 | 525 | croak_xs_usage(cv, "sv"); |
b7953727 | 526 | |
1b026014 NIS |
527 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
528 | XSRETURN(1); | |
529 | } | |
530 | ||
15eb3045 | 531 | XS(XS_utf8_unicode_to_native); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
532 | XS(XS_utf8_unicode_to_native) |
533 | { | |
534 | dXSARGS; | |
6867be6d | 535 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
536 | |
537 | if (items > 1) | |
afa74d42 | 538 | croak_xs_usage(cv, "sv"); |
b7953727 | 539 | |
1b026014 NIS |
540 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
541 | XSRETURN(1); | |
542 | } | |
543 | ||
15eb3045 | 544 | XS(XS_Internals_SvREADONLY); /* prototype to pass -Wmissing-prototypes */ |
14a976d6 | 545 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 JH |
546 | { |
547 | dXSARGS; | |
80b6a949 AB |
548 | SV * const svz = ST(0); |
549 | SV * sv; | |
58c0efa5 | 550 | PERL_UNUSED_ARG(cv); |
6867be6d | 551 | |
80b6a949 AB |
552 | /* [perl #77776] - called as &foo() not foo() */ |
553 | if (!SvROK(svz)) | |
554 | croak_xs_usage(cv, "SCALAR[, ON]"); | |
555 | ||
556 | sv = SvRV(svz); | |
557 | ||
29569577 | 558 | if (items == 1) { |
1620522e | 559 | if (SvREADONLY(sv)) |
29569577 JH |
560 | XSRETURN_YES; |
561 | else | |
562 | XSRETURN_NO; | |
563 | } | |
564 | else if (items == 2) { | |
565 | if (SvTRUE(ST(1))) { | |
1620522e | 566 | #ifdef PERL_OLD_COPY_ON_WRITE |
3e89ba19 | 567 | if (SvIsCOW(sv)) sv_force_normal(sv); |
1620522e | 568 | #endif |
a623f893 | 569 | SvFLAGS(sv) |= SVf_READONLY; |
29569577 JH |
570 | XSRETURN_YES; |
571 | } | |
572 | else { | |
14a976d6 | 573 | /* I hope you really know what you are doing. */ |
a623f893 | 574 | SvFLAGS(sv) &=~ SVf_READONLY; |
29569577 JH |
575 | XSRETURN_NO; |
576 | } | |
577 | } | |
14a976d6 | 578 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 | 579 | } |
2c6c1df5 | 580 | |
15eb3045 | 581 | XS(XS_constant__make_const); /* prototype to pass -Wmissing-prototypes */ |
2c6c1df5 FC |
582 | XS(XS_constant__make_const) /* This is dangerous stuff. */ |
583 | { | |
2c6c1df5 FC |
584 | dXSARGS; |
585 | SV * const svz = ST(0); | |
586 | SV * sv; | |
587 | PERL_UNUSED_ARG(cv); | |
588 | ||
589 | /* [perl #77776] - called as &foo() not foo() */ | |
590 | if (!SvROK(svz) || items != 1) | |
591 | croak_xs_usage(cv, "SCALAR"); | |
592 | ||
593 | sv = SvRV(svz); | |
594 | ||
595 | #ifdef PERL_OLD_COPY_ON_WRITE | |
596 | if (SvIsCOW(sv)) sv_force_normal(sv); | |
597 | #endif | |
598 | SvREADONLY_on(sv); | |
599 | if (SvTYPE(sv) == SVt_PVAV && AvFILLp(sv) != -1) { | |
600 | /* for constant.pm; nobody else should be calling this | |
601 | on arrays anyway. */ | |
602 | SV **svp; | |
603 | for (svp = AvARRAY(sv) + AvFILLp(sv) | |
604 | ; svp >= AvARRAY(sv) | |
605 | ; --svp) | |
606 | if (*svp) SvPADTMP_on(*svp); | |
607 | } | |
608 | XSRETURN(0); | |
609 | } | |
610 | ||
15eb3045 | 611 | XS(XS_Internals_SvREFCNT); /* prototype to pass -Wmissing-prototypes */ |
14a976d6 | 612 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 JH |
613 | { |
614 | dXSARGS; | |
80b6a949 AB |
615 | SV * const svz = ST(0); |
616 | SV * sv; | |
fa3febb6 | 617 | U32 refcnt; |
58c0efa5 | 618 | PERL_UNUSED_ARG(cv); |
6867be6d | 619 | |
80b6a949 | 620 | /* [perl #77776] - called as &foo() not foo() */ |
fa3febb6 | 621 | if ((items != 1 && items != 2) || !SvROK(svz)) |
80b6a949 AB |
622 | croak_xs_usage(cv, "SCALAR[, REFCOUNT]"); |
623 | ||
624 | sv = SvRV(svz); | |
625 | ||
14a976d6 | 626 | /* I hope you really know what you are doing. */ |
fa3febb6 DD |
627 | /* idea is for SvREFCNT(sv) to be accessed only once */ |
628 | refcnt = items == 2 ? | |
629 | /* we free one ref on exit */ | |
630 | (SvREFCNT(sv) = SvUV(ST(1)) + 1) | |
631 | : SvREFCNT(sv); | |
632 | XSRETURN_UV(refcnt - 1); /* Minus the ref created for us. */ | |
633 | ||
29569577 JH |
634 | } |
635 | ||
15eb3045 | 636 | XS(XS_Internals_hv_clear_placehold); /* prototype to pass -Wmissing-prototypes */ |
f044d0d1 | 637 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f NC |
638 | { |
639 | dXSARGS; | |
6867be6d | 640 | |
80b6a949 | 641 | if (items != 1 || !SvROK(ST(0))) |
afa74d42 | 642 | croak_xs_usage(cv, "hv"); |
c4420975 | 643 | else { |
ef8f7699 | 644 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); |
c4420975 AL |
645 | hv_clear_placeholders(hv); |
646 | XSRETURN(0); | |
647 | } | |
dfd4ef2f | 648 | } |
39f7a870 | 649 | |
15eb3045 | 650 | XS(XS_PerlIO_get_layers); /* prototype to pass -Wmissing-prototypes */ |
39f7a870 JH |
651 | XS(XS_PerlIO_get_layers) |
652 | { | |
653 | dXSARGS; | |
654 | if (items < 1 || items % 2 == 0) | |
afa74d42 | 655 | croak_xs_usage(cv, "filehandle[,args]"); |
97cb92d6 | 656 | #if defined(USE_PERLIO) |
39f7a870 JH |
657 | { |
658 | SV * sv; | |
659 | GV * gv; | |
660 | IO * io; | |
661 | bool input = TRUE; | |
662 | bool details = FALSE; | |
663 | ||
664 | if (items > 1) { | |
c4420975 | 665 | SV * const *svp; |
39f7a870 | 666 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
667 | SV * const * const varp = svp; |
668 | SV * const * const valp = svp + 1; | |
39f7a870 | 669 | STRLEN klen; |
c4420975 | 670 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
671 | |
672 | switch (*key) { | |
673 | case 'i': | |
674 | if (klen == 5 && memEQ(key, "input", 5)) { | |
675 | input = SvTRUE(*valp); | |
676 | break; | |
677 | } | |
678 | goto fail; | |
679 | case 'o': | |
680 | if (klen == 6 && memEQ(key, "output", 6)) { | |
681 | input = !SvTRUE(*valp); | |
682 | break; | |
683 | } | |
684 | goto fail; | |
685 | case 'd': | |
686 | if (klen == 7 && memEQ(key, "details", 7)) { | |
687 | details = SvTRUE(*valp); | |
688 | break; | |
689 | } | |
690 | goto fail; | |
691 | default: | |
692 | fail: | |
693 | Perl_croak(aTHX_ | |
694 | "get_layers: unknown argument '%s'", | |
695 | key); | |
696 | } | |
697 | } | |
698 | ||
699 | SP -= (items - 1); | |
700 | } | |
701 | ||
702 | sv = POPs; | |
7f9aa7d3 | 703 | gv = MAYBE_DEREF_GV(sv); |
39f7a870 | 704 | |
3825652d | 705 | if (!gv && !SvROK(sv)) |
7f9aa7d3 | 706 | gv = gv_fetchsv_nomg(sv, 0, SVt_PVIO); |
39f7a870 JH |
707 | |
708 | if (gv && (io = GvIO(gv))) { | |
c4420975 | 709 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 | 710 | IoIFP(io) : IoOFP(io)); |
c70927a6 | 711 | SSize_t i; |
b9f2b683 | 712 | const SSize_t last = av_tindex(av); |
c70927a6 | 713 | SSize_t nitem = 0; |
39f7a870 JH |
714 | |
715 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
716 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
717 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
718 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 719 | |
c4420975 AL |
720 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
721 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
722 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 | 723 | |
2102d7a2 | 724 | EXTEND(SP, 3); /* Three is the max in all branches: better check just once */ |
39f7a870 | 725 | if (details) { |
92e45a3e NC |
726 | /* Indents of 5? Yuck. */ |
727 | /* We know that PerlIO_get_layers creates a new SV for | |
728 | the name and flags, so we can just take a reference | |
729 | and "steal" it when we free the AV below. */ | |
2102d7a2 | 730 | PUSHs(namok |
92e45a3e | 731 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
ec3bab8e | 732 | : &PL_sv_undef); |
2102d7a2 | 733 | PUSHs(argok |
92e45a3e NC |
734 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
735 | SvCUR(*argsvp), | |
736 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) | |
737 | | SVs_TEMP) | |
738 | : &PL_sv_undef); | |
2102d7a2 | 739 | PUSHs(flgok |
92e45a3e | 740 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
ec3bab8e | 741 | : &PL_sv_undef); |
39f7a870 JH |
742 | nitem += 3; |
743 | } | |
744 | else { | |
745 | if (namok && argok) | |
2102d7a2 | 746 | PUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
be2597df | 747 | SVfARG(*namsvp), |
1eb9e81d | 748 | SVfARG(*argsvp)))); |
39f7a870 | 749 | else if (namok) |
2102d7a2 | 750 | PUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
39f7a870 | 751 | else |
2102d7a2 | 752 | PUSHs(&PL_sv_undef); |
39f7a870 JH |
753 | nitem++; |
754 | if (flgok) { | |
c4420975 | 755 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
756 | |
757 | if (flags & PERLIO_F_UTF8) { | |
2102d7a2 | 758 | PUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
39f7a870 JH |
759 | nitem++; |
760 | } | |
761 | } | |
762 | } | |
763 | } | |
764 | ||
765 | SvREFCNT_dec(av); | |
766 | ||
767 | XSRETURN(nitem); | |
768 | } | |
769 | } | |
5fef3b4a | 770 | #endif |
39f7a870 JH |
771 | |
772 | XSRETURN(0); | |
773 | } | |
774 | ||
241d1a3b | 775 | |
15eb3045 | 776 | XS(XS_re_is_regexp); /* prototype to pass -Wmissing-prototypes */ |
80305961 YO |
777 | XS(XS_re_is_regexp) |
778 | { | |
80305961 | 779 | dXSARGS; |
f7e71195 AB |
780 | PERL_UNUSED_VAR(cv); |
781 | ||
80305961 | 782 | if (items != 1) |
afa74d42 | 783 | croak_xs_usage(cv, "sv"); |
f7e71195 | 784 | |
f7e71195 AB |
785 | if (SvRXOK(ST(0))) { |
786 | XSRETURN_YES; | |
787 | } else { | |
788 | XSRETURN_NO; | |
80305961 YO |
789 | } |
790 | } | |
791 | ||
15eb3045 | 792 | XS(XS_re_regnames_count); /* prototype to pass -Wmissing-prototypes */ |
192b9cd1 | 793 | XS(XS_re_regnames_count) |
80305961 | 794 | { |
192b9cd1 AB |
795 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
796 | SV * ret; | |
80305961 | 797 | dXSARGS; |
192b9cd1 AB |
798 | |
799 | if (items != 0) | |
afa74d42 | 800 | croak_xs_usage(cv, ""); |
192b9cd1 AB |
801 | |
802 | SP -= items; | |
fdae9473 | 803 | PUTBACK; |
192b9cd1 AB |
804 | |
805 | if (!rx) | |
806 | XSRETURN_UNDEF; | |
807 | ||
808 | ret = CALLREG_NAMED_BUFF_COUNT(rx); | |
809 | ||
810 | SPAGAIN; | |
fdae9473 NC |
811 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); |
812 | XSRETURN(1); | |
192b9cd1 AB |
813 | } |
814 | ||
15eb3045 | 815 | XS(XS_re_regname); /* prototype to pass -Wmissing-prototypes */ |
192b9cd1 AB |
816 | XS(XS_re_regname) |
817 | { | |
192b9cd1 AB |
818 | dXSARGS; |
819 | REGEXP * rx; | |
820 | U32 flags; | |
821 | SV * ret; | |
822 | ||
28d8d7f4 | 823 | if (items < 1 || items > 2) |
afa74d42 | 824 | croak_xs_usage(cv, "name[, all ]"); |
192b9cd1 | 825 | |
80305961 | 826 | SP -= items; |
fdae9473 | 827 | PUTBACK; |
80305961 | 828 | |
192b9cd1 AB |
829 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
830 | ||
831 | if (!rx) | |
832 | XSRETURN_UNDEF; | |
833 | ||
834 | if (items == 2 && SvTRUE(ST(1))) { | |
f1b875a0 | 835 | flags = RXapif_ALL; |
192b9cd1 | 836 | } else { |
f1b875a0 | 837 | flags = RXapif_ONE; |
80305961 | 838 | } |
f1b875a0 | 839 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
192b9cd1 | 840 | |
fdae9473 NC |
841 | SPAGAIN; |
842 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); | |
843 | XSRETURN(1); | |
80305961 YO |
844 | } |
845 | ||
192b9cd1 | 846 | |
15eb3045 | 847 | XS(XS_re_regnames); /* prototype to pass -Wmissing-prototypes */ |
80305961 YO |
848 | XS(XS_re_regnames) |
849 | { | |
80305961 | 850 | dXSARGS; |
192b9cd1 AB |
851 | REGEXP * rx; |
852 | U32 flags; | |
853 | SV *ret; | |
854 | AV *av; | |
c70927a6 FC |
855 | SSize_t length; |
856 | SSize_t i; | |
192b9cd1 AB |
857 | SV **entry; |
858 | ||
859 | if (items > 1) | |
afa74d42 | 860 | croak_xs_usage(cv, "[all]"); |
192b9cd1 AB |
861 | |
862 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; | |
863 | ||
864 | if (!rx) | |
865 | XSRETURN_UNDEF; | |
866 | ||
867 | if (items == 1 && SvTRUE(ST(0))) { | |
f1b875a0 | 868 | flags = RXapif_ALL; |
192b9cd1 | 869 | } else { |
f1b875a0 | 870 | flags = RXapif_ONE; |
192b9cd1 AB |
871 | } |
872 | ||
80305961 | 873 | SP -= items; |
fdae9473 | 874 | PUTBACK; |
80305961 | 875 | |
f1b875a0 | 876 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
192b9cd1 AB |
877 | |
878 | SPAGAIN; | |
879 | ||
192b9cd1 AB |
880 | if (!ret) |
881 | XSRETURN_UNDEF; | |
882 | ||
502c6561 | 883 | av = MUTABLE_AV(SvRV(ret)); |
b9f2b683 | 884 | length = av_tindex(av); |
192b9cd1 | 885 | |
2102d7a2 | 886 | EXTEND(SP, length+1); /* better extend stack just once */ |
192b9cd1 AB |
887 | for (i = 0; i <= length; i++) { |
888 | entry = av_fetch(av, i, FALSE); | |
889 | ||
890 | if (!entry) | |
891 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); | |
892 | ||
2102d7a2 | 893 | mPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
80305961 | 894 | } |
ec83ea38 MHM |
895 | |
896 | SvREFCNT_dec(ret); | |
897 | ||
192b9cd1 AB |
898 | PUTBACK; |
899 | return; | |
80305961 YO |
900 | } |
901 | ||
15eb3045 | 902 | XS(XS_re_regexp_pattern); /* prototype to pass -Wmissing-prototypes */ |
192c1e27 JH |
903 | XS(XS_re_regexp_pattern) |
904 | { | |
192c1e27 JH |
905 | dXSARGS; |
906 | REGEXP *re; | |
de5fee32 | 907 | I32 const gimme = GIMME_V; |
192c1e27 | 908 | |
22d874e2 DD |
909 | EXTEND(SP, 2); |
910 | SP -= items; | |
192c1e27 | 911 | if (items != 1) |
afa74d42 | 912 | croak_xs_usage(cv, "sv"); |
192c1e27 | 913 | |
192c1e27 JH |
914 | /* |
915 | Checks if a reference is a regex or not. If the parameter is | |
916 | not a ref, or is not the result of a qr// then returns false | |
917 | in scalar context and an empty list in list context. | |
918 | Otherwise in list context it returns the pattern and the | |
919 | modifiers, in scalar context it returns the pattern just as it | |
920 | would if the qr// was stringified normally, regardless as | |
486ec47a | 921 | to the class of the variable and any stringification overloads |
192c1e27 JH |
922 | on the object. |
923 | */ | |
924 | ||
925 | if ((re = SvRX(ST(0)))) /* assign deliberate */ | |
926 | { | |
22c985d5 | 927 | /* Houston, we have a regex! */ |
192c1e27 | 928 | SV *pattern; |
192c1e27 | 929 | |
b1dcc8e2 | 930 | if ( gimme == G_ARRAY ) { |
9de15fec | 931 | STRLEN left = 0; |
a62b1201 | 932 | char reflags[sizeof(INT_PAT_MODS) + MAX_CHARSET_NAME_LENGTH]; |
69af1167 SH |
933 | const char *fptr; |
934 | char ch; | |
935 | U16 match_flags; | |
936 | ||
192c1e27 JH |
937 | /* |
938 | we are in list context so stringify | |
939 | the modifiers that apply. We ignore "negative | |
a62b1201 | 940 | modifiers" in this scenario, and the default character set |
192c1e27 JH |
941 | */ |
942 | ||
a62b1201 KW |
943 | if (get_regex_charset(RX_EXTFLAGS(re)) != REGEX_DEPENDS_CHARSET) { |
944 | STRLEN len; | |
945 | const char* const name = get_regex_charset_name(RX_EXTFLAGS(re), | |
946 | &len); | |
947 | Copy(name, reflags + left, len, char); | |
948 | left += len; | |
9de15fec | 949 | } |
69af1167 | 950 | fptr = INT_PAT_MODS; |
73134a2e | 951 | match_flags = (U16)((RX_EXTFLAGS(re) & RXf_PMf_COMPILETIME) |
192c1e27 JH |
952 | >> RXf_PMf_STD_PMMOD_SHIFT); |
953 | ||
954 | while((ch = *fptr++)) { | |
955 | if(match_flags & 1) { | |
956 | reflags[left++] = ch; | |
957 | } | |
958 | match_flags >>= 1; | |
959 | } | |
960 | ||
fb632ce3 NC |
961 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
962 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 JH |
963 | |
964 | /* return the pattern and the modifiers */ | |
2102d7a2 S |
965 | PUSHs(pattern); |
966 | PUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); | |
192c1e27 JH |
967 | XSRETURN(2); |
968 | } else { | |
969 | /* Scalar, so use the string that Perl would return */ | |
33be4c61 | 970 | /* return the pattern in (?msixn:..) format */ |
192c1e27 | 971 | #if PERL_VERSION >= 11 |
daba3364 | 972 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
192c1e27 | 973 | #else |
fb632ce3 NC |
974 | pattern = newSVpvn_flags(RX_WRAPPED(re), RX_WRAPLEN(re), |
975 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 | 976 | #endif |
22d874e2 | 977 | PUSHs(pattern); |
192c1e27 JH |
978 | XSRETURN(1); |
979 | } | |
980 | } else { | |
981 | /* It ain't a regexp folks */ | |
b1dcc8e2 | 982 | if ( gimme == G_ARRAY ) { |
192c1e27 | 983 | /* return the empty list */ |
7b46bf4c | 984 | XSRETURN_EMPTY; |
192c1e27 JH |
985 | } else { |
986 | /* Because of the (?:..) wrapping involved in a | |
987 | stringified pattern it is impossible to get a | |
988 | result for a real regexp that would evaluate to | |
989 | false. Therefore we can return PL_sv_no to signify | |
990 | that the object is not a regex, this means that one | |
991 | can say | |
992 | ||
993 | if (regex($might_be_a_regex) eq '(?:foo)') { } | |
994 | ||
995 | and not worry about undefined values. | |
996 | */ | |
997 | XSRETURN_NO; | |
998 | } | |
999 | } | |
661d43c4 | 1000 | NOT_REACHED; /* NOTREACHED */ |
192c1e27 JH |
1001 | } |
1002 | ||
b7a8ab8f | 1003 | #include "vutil.h" |
abc6d738 FC |
1004 | #include "vxs.inc" |
1005 | ||
eff5b9d5 NC |
1006 | struct xsub_details { |
1007 | const char *name; | |
1008 | XSUBADDR_t xsub; | |
1009 | const char *proto; | |
1010 | }; | |
1011 | ||
a9b7658f | 1012 | static const struct xsub_details details[] = { |
eff5b9d5 NC |
1013 | {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL}, |
1014 | {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL}, | |
1015 | {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL}, | |
abc6d738 FC |
1016 | #define VXS_XSUB_DETAILS |
1017 | #include "vxs.inc" | |
1018 | #undef VXS_XSUB_DETAILS | |
eff5b9d5 NC |
1019 | {"utf8::is_utf8", XS_utf8_is_utf8, NULL}, |
1020 | {"utf8::valid", XS_utf8_valid, NULL}, | |
1021 | {"utf8::encode", XS_utf8_encode, NULL}, | |
1022 | {"utf8::decode", XS_utf8_decode, NULL}, | |
1023 | {"utf8::upgrade", XS_utf8_upgrade, NULL}, | |
1024 | {"utf8::downgrade", XS_utf8_downgrade, NULL}, | |
1025 | {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL}, | |
1026 | {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL}, | |
1027 | {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"}, | |
2c6c1df5 | 1028 | {"constant::_make_const", XS_constant__make_const, "\\[$@]"}, |
eff5b9d5 NC |
1029 | {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"}, |
1030 | {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"}, | |
1031 | {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"}, | |
eff5b9d5 NC |
1032 | {"re::is_regexp", XS_re_is_regexp, "$"}, |
1033 | {"re::regname", XS_re_regname, ";$$"}, | |
1034 | {"re::regnames", XS_re_regnames, ";$"}, | |
1035 | {"re::regnames_count", XS_re_regnames_count, ""}, | |
1036 | {"re::regexp_pattern", XS_re_regexp_pattern, "$"}, | |
eff5b9d5 NC |
1037 | }; |
1038 | ||
273e254d KW |
1039 | STATIC OP* |
1040 | optimize_out_native_convert_function(pTHX_ OP* entersubop, | |
1041 | GV* namegv, | |
1042 | SV* protosv) | |
1043 | { | |
1044 | /* Optimizes out an identity function, i.e., one that just returns its | |
1045 | * argument. The passed in function is assumed to be an identity function, | |
1046 | * with no checking. This is designed to be called for utf8_to_native() | |
1047 | * and native_to_utf8() on ASCII platforms, as they just return their | |
1048 | * arguments, but it could work on any such function. | |
1049 | * | |
1050 | * The code is mostly just cargo-culted from Memoize::Lift */ | |
1051 | ||
1052 | OP *pushop, *argop; | |
614f287f | 1053 | OP *parent; |
273e254d KW |
1054 | SV* prototype = newSVpvs("$"); |
1055 | ||
1056 | PERL_UNUSED_ARG(protosv); | |
1057 | ||
1058 | assert(entersubop->op_type == OP_ENTERSUB); | |
1059 | ||
1060 | entersubop = ck_entersub_args_proto(entersubop, namegv, prototype); | |
614f287f | 1061 | parent = entersubop; |
273e254d KW |
1062 | |
1063 | SvREFCNT_dec(prototype); | |
1064 | ||
1065 | pushop = cUNOPx(entersubop)->op_first; | |
bac7a184 | 1066 | if (! OpHAS_SIBLING(pushop)) { |
614f287f | 1067 | parent = pushop; |
273e254d KW |
1068 | pushop = cUNOPx(pushop)->op_first; |
1069 | } | |
614f287f | 1070 | argop = OpSIBLING(pushop); |
273e254d KW |
1071 | |
1072 | /* Carry on without doing the optimization if it is not something we're | |
1073 | * expecting, so continues to work */ | |
1074 | if ( ! argop | |
bac7a184 | 1075 | || ! OpHAS_SIBLING(argop) |
614f287f | 1076 | || OpHAS_SIBLING(OpSIBLING(argop)) |
273e254d KW |
1077 | ) { |
1078 | return entersubop; | |
1079 | } | |
1080 | ||
614f287f DM |
1081 | /* cut argop from the subtree */ |
1082 | (void)op_sibling_splice(parent, pushop, 1, NULL); | |
273e254d KW |
1083 | |
1084 | op_free(entersubop); | |
1085 | return argop; | |
1086 | } | |
1087 | ||
eff5b9d5 NC |
1088 | void |
1089 | Perl_boot_core_UNIVERSAL(pTHX) | |
1090 | { | |
eff5b9d5 | 1091 | static const char file[] = __FILE__; |
7a6ecb12 | 1092 | const struct xsub_details *xsub = details; |
c3caa5c3 | 1093 | const struct xsub_details *end = C_ARRAY_END(details); |
eff5b9d5 NC |
1094 | |
1095 | do { | |
1096 | newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0); | |
1097 | } while (++xsub < end); | |
1098 | ||
273e254d KW |
1099 | #ifndef EBCDIC |
1100 | { /* On ASCII platforms these functions just return their argument, so can | |
1101 | be optimized away */ | |
1102 | ||
1103 | CV* to_native_cv = get_cv("utf8::unicode_to_native", 0); | |
1104 | CV* to_unicode_cv = get_cv("utf8::native_to_unicode", 0); | |
1105 | ||
1106 | cv_set_call_checker(to_native_cv, | |
1107 | optimize_out_native_convert_function, | |
1108 | (SV*) to_native_cv); | |
1109 | cv_set_call_checker(to_unicode_cv, | |
1110 | optimize_out_native_convert_function, | |
1111 | (SV*) to_unicode_cv); | |
1112 | } | |
1113 | #endif | |
1114 | ||
eff5b9d5 | 1115 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
bad4ae38 FC |
1116 | { |
1117 | CV * const cv = | |
1118 | newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL); | |
5513c2cf DD |
1119 | char ** cvfile = &CvFILE(cv); |
1120 | char * oldfile = *cvfile; | |
bad4ae38 | 1121 | CvDYNFILE_off(cv); |
5513c2cf DD |
1122 | *cvfile = (char *)file; |
1123 | Safefree(oldfile); | |
bad4ae38 | 1124 | } |
eff5b9d5 | 1125 | } |
80305961 | 1126 | |
241d1a3b | 1127 | /* |
14d04a33 | 1128 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 1129 | */ |