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 | ||
7fd883b1 DM |
187 | /* a special string address whose value is "isa", but which perl knows |
188 | * to treat as if it were really "DOES" when printing the method name in | |
189 | * the "Can't call method '%s'" error message */ | |
9a70c74b DM |
190 | char PL_isa_DOES[] = "isa"; |
191 | ||
cbc021f9 | 192 | bool |
f778bcfd | 193 | Perl_sv_does_sv(pTHX_ SV *sv, SV *namesv, U32 flags) |
cbc021f9 | 194 | { |
f778bcfd | 195 | SV *classname; |
cbc021f9 | 196 | bool does_it; |
59e7186f | 197 | SV *methodname; |
cbc021f9 | 198 | dSP; |
7918f24d | 199 | |
f778bcfd BF |
200 | PERL_ARGS_ASSERT_SV_DOES_SV; |
201 | PERL_UNUSED_ARG(flags); | |
7918f24d | 202 | |
cbc021f9 | 203 | ENTER; |
204 | SAVETMPS; | |
205 | ||
206 | SvGETMAGIC(sv); | |
207 | ||
d96ab1b5 | 208 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) { |
7ce46f2a | 209 | LEAVE; |
cbc021f9 | 210 | return FALSE; |
7ce46f2a | 211 | } |
cbc021f9 | 212 | |
4b523e79 | 213 | if (SvROK(sv) && SvOBJECT(SvRV(sv))) { |
f778bcfd | 214 | classname = sv_ref(NULL,SvRV(sv),TRUE); |
cbc021f9 | 215 | } else { |
f778bcfd | 216 | classname = sv; |
cbc021f9 | 217 | } |
218 | ||
f778bcfd | 219 | if (sv_eq(classname, namesv)) { |
7ce46f2a | 220 | LEAVE; |
cbc021f9 | 221 | return TRUE; |
7ce46f2a | 222 | } |
cbc021f9 | 223 | |
224 | PUSHMARK(SP); | |
f778bcfd BF |
225 | EXTEND(SP, 2); |
226 | PUSHs(sv); | |
227 | PUSHs(namesv); | |
cbc021f9 | 228 | PUTBACK; |
229 | ||
9a70c74b | 230 | /* create a PV with value "isa", but with a special address |
7fd883b1 | 231 | * so that perl knows we're really doing "DOES" instead */ |
9a70c74b DM |
232 | methodname = newSV_type(SVt_PV); |
233 | SvLEN(methodname) = 0; | |
234 | SvCUR(methodname) = strlen(PL_isa_DOES); | |
235 | SvPVX(methodname) = PL_isa_DOES; | |
236 | SvPOK_on(methodname); | |
237 | sv_2mortal(methodname); | |
59e7186f | 238 | call_sv(methodname, G_SCALAR | G_METHOD); |
cbc021f9 | 239 | SPAGAIN; |
240 | ||
241 | does_it = SvTRUE( TOPs ); | |
242 | FREETMPS; | |
243 | LEAVE; | |
244 | ||
245 | return does_it; | |
246 | } | |
247 | ||
afa74d42 | 248 | /* |
f778bcfd BF |
249 | =for apidoc sv_does |
250 | ||
d20c2c29 | 251 | Like L</sv_does_pv>, but doesn't take a C<flags> parameter. |
f778bcfd BF |
252 | |
253 | =cut | |
254 | */ | |
255 | ||
256 | bool | |
257 | Perl_sv_does(pTHX_ SV *sv, const char *const name) | |
258 | { | |
259 | PERL_ARGS_ASSERT_SV_DOES; | |
260 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP), 0); | |
261 | } | |
262 | ||
263 | /* | |
264 | =for apidoc sv_does_pv | |
265 | ||
7d892b8c | 266 | Like L</sv_does_sv>, but takes a nul-terminated string instead of an SV. |
f778bcfd BF |
267 | |
268 | =cut | |
269 | */ | |
270 | ||
271 | ||
272 | bool | |
273 | Perl_sv_does_pv(pTHX_ SV *sv, const char *const name, U32 flags) | |
274 | { | |
275 | PERL_ARGS_ASSERT_SV_DOES_PV; | |
276 | return sv_does_sv(sv, newSVpvn_flags(name, strlen(name), SVs_TEMP | flags), flags); | |
277 | } | |
278 | ||
7d892b8c FC |
279 | /* |
280 | =for apidoc sv_does_pvn | |
281 | ||
282 | Like L</sv_does_sv>, but takes a string/length pair instead of an SV. | |
283 | ||
284 | =cut | |
285 | */ | |
286 | ||
f778bcfd BF |
287 | bool |
288 | Perl_sv_does_pvn(pTHX_ SV *sv, const char *const name, const STRLEN len, U32 flags) | |
289 | { | |
290 | PERL_ARGS_ASSERT_SV_DOES_PVN; | |
291 | ||
292 | return sv_does_sv(sv, newSVpvn_flags(name, len, flags | SVs_TEMP), flags); | |
293 | } | |
294 | ||
295 | /* | |
afa74d42 NC |
296 | =for apidoc croak_xs_usage |
297 | ||
298 | A specialised variant of C<croak()> for emitting the usage message for xsubs | |
299 | ||
300 | croak_xs_usage(cv, "eee_yow"); | |
301 | ||
302 | works out the package name and subroutine name from C<cv>, and then calls | |
72d33970 | 303 | C<croak()>. Hence if C<cv> is C<&ouch::awk>, it would call C<croak> as: |
afa74d42 | 304 | |
147e3846 | 305 | Perl_croak(aTHX_ "Usage: %" SVf "::%" SVf "(%s)", "ouch" "awk", |
8560fbdd | 306 | "eee_yow"); |
afa74d42 NC |
307 | |
308 | =cut | |
309 | */ | |
310 | ||
311 | void | |
cb077ed2 | 312 | Perl_croak_xs_usage(const CV *const cv, const char *const params) |
afa74d42 | 313 | { |
ae77754a | 314 | /* Avoid CvGV as it requires aTHX. */ |
2eaf799e | 315 | const GV *gv = CvNAMED(cv) ? NULL : cv->sv_any->xcv_gv_u.xcv_gv; |
afa74d42 NC |
316 | |
317 | PERL_ARGS_ASSERT_CROAK_XS_USAGE; | |
318 | ||
2eaf799e | 319 | if (gv) got_gv: { |
afa74d42 | 320 | const HV *const stash = GvSTASH(gv); |
afa74d42 | 321 | |
58cb15b3 | 322 | if (HvNAME_get(stash)) |
d3ee9aa5 | 323 | /* diag_listed_as: SKIPME */ |
147e3846 | 324 | Perl_croak_nocontext("Usage: %" HEKf "::%" HEKf "(%s)", |
d0c0e7dd FC |
325 | HEKfARG(HvNAME_HEK(stash)), |
326 | HEKfARG(GvNAME_HEK(gv)), | |
58cb15b3 | 327 | params); |
afa74d42 | 328 | else |
d3ee9aa5 | 329 | /* diag_listed_as: SKIPME */ |
147e3846 | 330 | Perl_croak_nocontext("Usage: %" HEKf "(%s)", |
d0c0e7dd | 331 | HEKfARG(GvNAME_HEK(gv)), params); |
afa74d42 | 332 | } else { |
2eaf799e FC |
333 | dTHX; |
334 | if ((gv = CvGV(cv))) goto got_gv; | |
335 | ||
afa74d42 | 336 | /* Pants. I don't think that it should be possible to get here. */ |
d3ee9aa5 | 337 | /* diag_listed_as: SKIPME */ |
147e3846 | 338 | Perl_croak(aTHX_ "Usage: CODE(0x%" UVxf ")(%s)", PTR2UV(cv), params); |
afa74d42 NC |
339 | } |
340 | } | |
55497cff | 341 | |
15eb3045 | 342 | XS(XS_UNIVERSAL_isa); /* prototype to pass -Wmissing-prototypes */ |
6d4a7be2 | 343 | XS(XS_UNIVERSAL_isa) |
344 | { | |
345 | dXSARGS; | |
6d4a7be2 | 346 | |
347 | if (items != 2) | |
afa74d42 | 348 | croak_xs_usage(cv, "reference, kind"); |
c4420975 AL |
349 | else { |
350 | SV * const sv = ST(0); | |
6d4a7be2 | 351 | |
c4420975 | 352 | SvGETMAGIC(sv); |
d3f7f2b2 | 353 | |
d96ab1b5 | 354 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)))) |
c4420975 | 355 | XSRETURN_UNDEF; |
f8f70380 | 356 | |
c7abbf64 | 357 | ST(0) = boolSV(sv_derived_from_sv(sv, ST(1), 0)); |
c4420975 AL |
358 | XSRETURN(1); |
359 | } | |
6d4a7be2 | 360 | } |
361 | ||
15eb3045 | 362 | XS(XS_UNIVERSAL_can); /* prototype to pass -Wmissing-prototypes */ |
6d4a7be2 | 363 | XS(XS_UNIVERSAL_can) |
364 | { | |
365 | dXSARGS; | |
366 | SV *sv; | |
6d4a7be2 | 367 | SV *rv; |
6f08146e | 368 | HV *pkg = NULL; |
2bde9ae6 | 369 | GV *iogv; |
6d4a7be2 | 370 | |
371 | if (items != 2) | |
afa74d42 | 372 | croak_xs_usage(cv, "object-ref, method"); |
6d4a7be2 | 373 | |
374 | sv = ST(0); | |
f8f70380 | 375 | |
5b295bef | 376 | SvGETMAGIC(sv); |
d3f7f2b2 | 377 | |
4178f891 FC |
378 | /* Reject undef and empty string. Note that the string form takes |
379 | precedence here over the numeric form, as (!1)->foo treats the | |
380 | invocant as the empty string, though it is a dualvar. */ | |
381 | if (!SvOK(sv) || (SvPOK(sv) && !SvCUR(sv))) | |
f8f70380 GS |
382 | XSRETURN_UNDEF; |
383 | ||
3280af22 | 384 | rv = &PL_sv_undef; |
6d4a7be2 | 385 | |
46e4b22b | 386 | if (SvROK(sv)) { |
daba3364 | 387 | sv = MUTABLE_SV(SvRV(sv)); |
46e4b22b | 388 | if (SvOBJECT(sv)) |
6f08146e | 389 | pkg = SvSTASH(sv); |
4178f891 FC |
390 | else if (isGV_with_GP(sv) && GvIO(sv)) |
391 | pkg = SvSTASH(GvIO(sv)); | |
6f08146e | 392 | } |
4178f891 FC |
393 | else if (isGV_with_GP(sv) && GvIO(sv)) |
394 | pkg = SvSTASH(GvIO(sv)); | |
2bde9ae6 FC |
395 | else if ((iogv = gv_fetchsv_nomg(sv, 0, SVt_PVIO)) && GvIO(iogv)) |
396 | pkg = SvSTASH(GvIO(iogv)); | |
6f08146e | 397 | else { |
da51bb9b | 398 | pkg = gv_stashsv(sv, 0); |
68b40612 | 399 | if (!pkg) |
7d59d161 | 400 | pkg = gv_stashpvs("UNIVERSAL", 0); |
6f08146e NIS |
401 | } |
402 | ||
403 | if (pkg) { | |
a00b390b | 404 | GV * const gv = gv_fetchmethod_sv_flags(pkg, ST(1), 0); |
dc848c6f | 405 | if (gv && isGV(gv)) |
daba3364 | 406 | rv = sv_2mortal(newRV(MUTABLE_SV(GvCV(gv)))); |
6d4a7be2 | 407 | } |
408 | ||
409 | ST(0) = rv; | |
410 | XSRETURN(1); | |
411 | } | |
412 | ||
15eb3045 | 413 | XS(XS_UNIVERSAL_DOES); /* prototype to pass -Wmissing-prototypes */ |
cbc021f9 | 414 | XS(XS_UNIVERSAL_DOES) |
415 | { | |
cbc021f9 | 416 | dXSARGS; |
58c0efa5 | 417 | PERL_UNUSED_ARG(cv); |
cbc021f9 | 418 | |
419 | if (items != 2) | |
46404226 | 420 | Perl_croak(aTHX_ "Usage: invocant->DOES(kind)"); |
cbc021f9 | 421 | else { |
422 | SV * const sv = ST(0); | |
f778bcfd | 423 | if (sv_does_sv( sv, ST(1), 0 )) |
cbc021f9 | 424 | XSRETURN_YES; |
425 | ||
426 | XSRETURN_NO; | |
427 | } | |
428 | } | |
429 | ||
15eb3045 | 430 | XS(XS_utf8_is_utf8); /* prototype to pass -Wmissing-prototypes */ |
8800c35a JH |
431 | XS(XS_utf8_is_utf8) |
432 | { | |
41be1fbd JH |
433 | dXSARGS; |
434 | if (items != 1) | |
afa74d42 | 435 | croak_xs_usage(cv, "sv"); |
c4420975 | 436 | else { |
76f73021 GF |
437 | SV * const sv = ST(0); |
438 | SvGETMAGIC(sv); | |
c4420975 AL |
439 | if (SvUTF8(sv)) |
440 | XSRETURN_YES; | |
441 | else | |
442 | XSRETURN_NO; | |
41be1fbd JH |
443 | } |
444 | XSRETURN_EMPTY; | |
8800c35a JH |
445 | } |
446 | ||
15eb3045 | 447 | XS(XS_utf8_valid); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
448 | XS(XS_utf8_valid) |
449 | { | |
41be1fbd JH |
450 | dXSARGS; |
451 | if (items != 1) | |
afa74d42 | 452 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
453 | else { |
454 | SV * const sv = ST(0); | |
455 | STRLEN len; | |
456 | const char * const s = SvPV_const(sv,len); | |
457 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
458 | XSRETURN_YES; | |
459 | else | |
460 | XSRETURN_NO; | |
461 | } | |
41be1fbd | 462 | XSRETURN_EMPTY; |
1b026014 NIS |
463 | } |
464 | ||
15eb3045 | 465 | XS(XS_utf8_encode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
466 | XS(XS_utf8_encode) |
467 | { | |
468 | dXSARGS; | |
469 | if (items != 1) | |
afa74d42 | 470 | croak_xs_usage(cv, "sv"); |
c4420975 | 471 | sv_utf8_encode(ST(0)); |
892f9127 | 472 | SvSETMAGIC(ST(0)); |
1b026014 NIS |
473 | XSRETURN_EMPTY; |
474 | } | |
475 | ||
15eb3045 | 476 | XS(XS_utf8_decode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
477 | XS(XS_utf8_decode) |
478 | { | |
479 | dXSARGS; | |
480 | if (items != 1) | |
afa74d42 | 481 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
482 | else { |
483 | SV * const sv = ST(0); | |
b2b7346b | 484 | bool RETVAL; |
c7102404 | 485 | SvPV_force_nolen(sv); |
b2b7346b | 486 | RETVAL = sv_utf8_decode(sv); |
77fc86ef | 487 | SvSETMAGIC(sv); |
1b026014 | 488 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
489 | } |
490 | XSRETURN(1); | |
491 | } | |
492 | ||
15eb3045 | 493 | XS(XS_utf8_upgrade); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
494 | XS(XS_utf8_upgrade) |
495 | { | |
496 | dXSARGS; | |
497 | if (items != 1) | |
afa74d42 | 498 | croak_xs_usage(cv, "sv"); |
c4420975 AL |
499 | else { |
500 | SV * const sv = ST(0); | |
1b026014 NIS |
501 | STRLEN RETVAL; |
502 | dXSTARG; | |
503 | ||
504 | RETVAL = sv_utf8_upgrade(sv); | |
505 | XSprePUSH; PUSHi((IV)RETVAL); | |
506 | } | |
507 | XSRETURN(1); | |
508 | } | |
509 | ||
15eb3045 | 510 | XS(XS_utf8_downgrade); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
511 | XS(XS_utf8_downgrade) |
512 | { | |
513 | dXSARGS; | |
514 | if (items < 1 || items > 2) | |
afa74d42 | 515 | croak_xs_usage(cv, "sv, failok=0"); |
c4420975 AL |
516 | else { |
517 | SV * const sv = ST(0); | |
3ca75eca | 518 | const bool failok = (items < 2) ? 0 : SvTRUE(ST(1)) ? 1 : 0; |
6867be6d | 519 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 | 520 | |
1b026014 | 521 | ST(0) = boolSV(RETVAL); |
1b026014 NIS |
522 | } |
523 | XSRETURN(1); | |
524 | } | |
525 | ||
15eb3045 | 526 | XS(XS_utf8_native_to_unicode); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
527 | XS(XS_utf8_native_to_unicode) |
528 | { | |
529 | dXSARGS; | |
6867be6d | 530 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
531 | |
532 | if (items > 1) | |
afa74d42 | 533 | croak_xs_usage(cv, "sv"); |
b7953727 | 534 | |
b5804ad6 | 535 | ST(0) = sv_2mortal(newSVuv(NATIVE_TO_UNI(uv))); |
1b026014 NIS |
536 | XSRETURN(1); |
537 | } | |
538 | ||
15eb3045 | 539 | XS(XS_utf8_unicode_to_native); /* prototype to pass -Wmissing-prototypes */ |
1b026014 NIS |
540 | XS(XS_utf8_unicode_to_native) |
541 | { | |
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 | |
b5804ad6 | 548 | ST(0) = sv_2mortal(newSVuv(UNI_TO_NATIVE(uv))); |
1b026014 NIS |
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 JH |
554 | { |
555 | dXSARGS; | |
80b6a949 AB |
556 | SV * const svz = ST(0); |
557 | SV * sv; | |
6867be6d | 558 | |
80b6a949 AB |
559 | /* [perl #77776] - called as &foo() not foo() */ |
560 | if (!SvROK(svz)) | |
561 | croak_xs_usage(cv, "SCALAR[, ON]"); | |
562 | ||
563 | sv = SvRV(svz); | |
564 | ||
29569577 | 565 | if (items == 1) { |
1620522e | 566 | if (SvREADONLY(sv)) |
29569577 JH |
567 | XSRETURN_YES; |
568 | else | |
569 | XSRETURN_NO; | |
570 | } | |
571 | else if (items == 2) { | |
572 | if (SvTRUE(ST(1))) { | |
a623f893 | 573 | SvFLAGS(sv) |= SVf_READONLY; |
29569577 JH |
574 | XSRETURN_YES; |
575 | } | |
576 | else { | |
14a976d6 | 577 | /* I hope you really know what you are doing. */ |
a623f893 | 578 | SvFLAGS(sv) &=~ SVf_READONLY; |
29569577 JH |
579 | XSRETURN_NO; |
580 | } | |
581 | } | |
14a976d6 | 582 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 | 583 | } |
2c6c1df5 | 584 | |
15eb3045 | 585 | XS(XS_constant__make_const); /* prototype to pass -Wmissing-prototypes */ |
2c6c1df5 FC |
586 | XS(XS_constant__make_const) /* This is dangerous stuff. */ |
587 | { | |
2c6c1df5 FC |
588 | dXSARGS; |
589 | SV * const svz = ST(0); | |
590 | SV * sv; | |
2c6c1df5 FC |
591 | |
592 | /* [perl #77776] - called as &foo() not foo() */ | |
593 | if (!SvROK(svz) || items != 1) | |
594 | croak_xs_usage(cv, "SCALAR"); | |
595 | ||
596 | sv = SvRV(svz); | |
597 | ||
2c6c1df5 FC |
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; |
6867be6d | 618 | |
80b6a949 | 619 | /* [perl #77776] - called as &foo() not foo() */ |
fa3febb6 | 620 | if ((items != 1 && items != 2) || !SvROK(svz)) |
80b6a949 AB |
621 | croak_xs_usage(cv, "SCALAR[, REFCOUNT]"); |
622 | ||
623 | sv = SvRV(svz); | |
624 | ||
14a976d6 | 625 | /* I hope you really know what you are doing. */ |
fa3febb6 DD |
626 | /* idea is for SvREFCNT(sv) to be accessed only once */ |
627 | refcnt = items == 2 ? | |
628 | /* we free one ref on exit */ | |
629 | (SvREFCNT(sv) = SvUV(ST(1)) + 1) | |
630 | : SvREFCNT(sv); | |
631 | XSRETURN_UV(refcnt - 1); /* Minus the ref created for us. */ | |
632 | ||
29569577 JH |
633 | } |
634 | ||
e312a16a YO |
635 | XS(XS_Internals_hv_clear_placehold); /* prototype to pass -Wmissing-prototypes */ |
636 | XS(XS_Internals_hv_clear_placehold) | |
637 | { | |
638 | dXSARGS; | |
639 | ||
640 | if (items != 1 || !SvROK(ST(0))) | |
641 | croak_xs_usage(cv, "hv"); | |
642 | else { | |
643 | HV * const hv = MUTABLE_HV(SvRV(ST(0))); | |
644 | hv_clear_placeholders(hv); | |
645 | XSRETURN(0); | |
646 | } | |
647 | } | |
648 | ||
15eb3045 | 649 | XS(XS_PerlIO_get_layers); /* prototype to pass -Wmissing-prototypes */ |
39f7a870 JH |
650 | XS(XS_PerlIO_get_layers) |
651 | { | |
652 | dXSARGS; | |
653 | if (items < 1 || items % 2 == 0) | |
afa74d42 | 654 | croak_xs_usage(cv, "filehandle[,args]"); |
97cb92d6 | 655 | #if defined(USE_PERLIO) |
39f7a870 JH |
656 | { |
657 | SV * sv; | |
658 | GV * gv; | |
659 | IO * io; | |
660 | bool input = TRUE; | |
661 | bool details = FALSE; | |
662 | ||
663 | if (items > 1) { | |
c4420975 | 664 | SV * const *svp; |
39f7a870 | 665 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
666 | SV * const * const varp = svp; |
667 | SV * const * const valp = svp + 1; | |
39f7a870 | 668 | STRLEN klen; |
c4420975 | 669 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
670 | |
671 | switch (*key) { | |
672 | case 'i': | |
fd9f609b | 673 | if (memEQs(key, klen, "input")) { |
39f7a870 JH |
674 | input = SvTRUE(*valp); |
675 | break; | |
676 | } | |
677 | goto fail; | |
678 | case 'o': | |
fd9f609b | 679 | if (memEQs(key, klen, "output")) { |
39f7a870 JH |
680 | input = !SvTRUE(*valp); |
681 | break; | |
682 | } | |
683 | goto fail; | |
684 | case 'd': | |
fd9f609b | 685 | if (memEQs(key, klen, "details")) { |
39f7a870 JH |
686 | details = SvTRUE(*valp); |
687 | break; | |
688 | } | |
689 | goto fail; | |
690 | default: | |
691 | fail: | |
692 | Perl_croak(aTHX_ | |
693 | "get_layers: unknown argument '%s'", | |
694 | key); | |
695 | } | |
696 | } | |
697 | ||
698 | SP -= (items - 1); | |
699 | } | |
700 | ||
701 | sv = POPs; | |
7f9aa7d3 | 702 | gv = MAYBE_DEREF_GV(sv); |
39f7a870 | 703 | |
3825652d | 704 | if (!gv && !SvROK(sv)) |
7f9aa7d3 | 705 | gv = gv_fetchsv_nomg(sv, 0, SVt_PVIO); |
39f7a870 JH |
706 | |
707 | if (gv && (io = GvIO(gv))) { | |
c4420975 | 708 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 | 709 | IoIFP(io) : IoOFP(io)); |
c70927a6 | 710 | SSize_t i; |
b9f2b683 | 711 | const SSize_t last = av_tindex(av); |
c70927a6 | 712 | SSize_t nitem = 0; |
39f7a870 JH |
713 | |
714 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
715 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
716 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
717 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 718 | |
c4420975 AL |
719 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
720 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
721 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 | 722 | |
2102d7a2 | 723 | EXTEND(SP, 3); /* Three is the max in all branches: better check just once */ |
39f7a870 | 724 | if (details) { |
92e45a3e NC |
725 | /* Indents of 5? Yuck. */ |
726 | /* We know that PerlIO_get_layers creates a new SV for | |
727 | the name and flags, so we can just take a reference | |
728 | and "steal" it when we free the AV below. */ | |
2102d7a2 | 729 | PUSHs(namok |
92e45a3e | 730 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp)) |
ec3bab8e | 731 | : &PL_sv_undef); |
2102d7a2 | 732 | PUSHs(argok |
92e45a3e NC |
733 | ? newSVpvn_flags(SvPVX_const(*argsvp), |
734 | SvCUR(*argsvp), | |
735 | (SvUTF8(*argsvp) ? SVf_UTF8 : 0) | |
736 | | SVs_TEMP) | |
737 | : &PL_sv_undef); | |
2102d7a2 | 738 | PUSHs(flgok |
92e45a3e | 739 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*flgsvp)) |
ec3bab8e | 740 | : &PL_sv_undef); |
39f7a870 JH |
741 | nitem += 3; |
742 | } | |
743 | else { | |
744 | if (namok && argok) | |
147e3846 | 745 | PUSHs(sv_2mortal(Perl_newSVpvf(aTHX_ "%" SVf "(%" SVf ")", |
be2597df | 746 | SVfARG(*namsvp), |
1eb9e81d | 747 | SVfARG(*argsvp)))); |
39f7a870 | 748 | else if (namok) |
2102d7a2 | 749 | PUSHs(sv_2mortal(SvREFCNT_inc_simple_NN(*namsvp))); |
39f7a870 | 750 | else |
2102d7a2 | 751 | PUSHs(&PL_sv_undef); |
39f7a870 JH |
752 | nitem++; |
753 | if (flgok) { | |
c4420975 | 754 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
755 | |
756 | if (flags & PERLIO_F_UTF8) { | |
2102d7a2 | 757 | PUSHs(newSVpvs_flags("utf8", SVs_TEMP)); |
39f7a870 JH |
758 | nitem++; |
759 | } | |
760 | } | |
761 | } | |
762 | } | |
763 | ||
764 | SvREFCNT_dec(av); | |
765 | ||
766 | XSRETURN(nitem); | |
767 | } | |
768 | } | |
5fef3b4a | 769 | #endif |
39f7a870 JH |
770 | |
771 | XSRETURN(0); | |
772 | } | |
773 | ||
15eb3045 | 774 | XS(XS_re_is_regexp); /* prototype to pass -Wmissing-prototypes */ |
80305961 YO |
775 | XS(XS_re_is_regexp) |
776 | { | |
80305961 | 777 | dXSARGS; |
f7e71195 | 778 | |
80305961 | 779 | if (items != 1) |
afa74d42 | 780 | croak_xs_usage(cv, "sv"); |
f7e71195 | 781 | |
f7e71195 AB |
782 | if (SvRXOK(ST(0))) { |
783 | XSRETURN_YES; | |
784 | } else { | |
785 | XSRETURN_NO; | |
80305961 YO |
786 | } |
787 | } | |
788 | ||
15eb3045 | 789 | XS(XS_re_regnames_count); /* prototype to pass -Wmissing-prototypes */ |
192b9cd1 | 790 | XS(XS_re_regnames_count) |
80305961 | 791 | { |
192b9cd1 AB |
792 | REGEXP *rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
793 | SV * ret; | |
80305961 | 794 | dXSARGS; |
192b9cd1 AB |
795 | |
796 | if (items != 0) | |
afa74d42 | 797 | croak_xs_usage(cv, ""); |
192b9cd1 | 798 | |
192b9cd1 AB |
799 | if (!rx) |
800 | XSRETURN_UNDEF; | |
801 | ||
802 | ret = CALLREG_NAMED_BUFF_COUNT(rx); | |
803 | ||
804 | SPAGAIN; | |
fdae9473 NC |
805 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); |
806 | XSRETURN(1); | |
192b9cd1 AB |
807 | } |
808 | ||
15eb3045 | 809 | XS(XS_re_regname); /* prototype to pass -Wmissing-prototypes */ |
192b9cd1 AB |
810 | XS(XS_re_regname) |
811 | { | |
192b9cd1 AB |
812 | dXSARGS; |
813 | REGEXP * rx; | |
814 | U32 flags; | |
815 | SV * ret; | |
816 | ||
28d8d7f4 | 817 | if (items < 1 || items > 2) |
afa74d42 | 818 | croak_xs_usage(cv, "name[, all ]"); |
192b9cd1 | 819 | |
80305961 | 820 | SP -= items; |
fdae9473 | 821 | PUTBACK; |
80305961 | 822 | |
192b9cd1 AB |
823 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; |
824 | ||
825 | if (!rx) | |
826 | XSRETURN_UNDEF; | |
827 | ||
828 | if (items == 2 && SvTRUE(ST(1))) { | |
f1b875a0 | 829 | flags = RXapif_ALL; |
192b9cd1 | 830 | } else { |
f1b875a0 | 831 | flags = RXapif_ONE; |
80305961 | 832 | } |
f1b875a0 | 833 | ret = CALLREG_NAMED_BUFF_FETCH(rx, ST(0), (flags | RXapif_REGNAME)); |
192b9cd1 | 834 | |
fdae9473 NC |
835 | SPAGAIN; |
836 | PUSHs(ret ? sv_2mortal(ret) : &PL_sv_undef); | |
837 | XSRETURN(1); | |
80305961 YO |
838 | } |
839 | ||
192b9cd1 | 840 | |
15eb3045 | 841 | XS(XS_re_regnames); /* prototype to pass -Wmissing-prototypes */ |
80305961 YO |
842 | XS(XS_re_regnames) |
843 | { | |
80305961 | 844 | dXSARGS; |
192b9cd1 AB |
845 | REGEXP * rx; |
846 | U32 flags; | |
847 | SV *ret; | |
848 | AV *av; | |
c70927a6 FC |
849 | SSize_t length; |
850 | SSize_t i; | |
192b9cd1 AB |
851 | SV **entry; |
852 | ||
853 | if (items > 1) | |
afa74d42 | 854 | croak_xs_usage(cv, "[all]"); |
192b9cd1 AB |
855 | |
856 | rx = PL_curpm ? PM_GETRE(PL_curpm) : NULL; | |
857 | ||
858 | if (!rx) | |
859 | XSRETURN_UNDEF; | |
860 | ||
861 | if (items == 1 && SvTRUE(ST(0))) { | |
f1b875a0 | 862 | flags = RXapif_ALL; |
192b9cd1 | 863 | } else { |
f1b875a0 | 864 | flags = RXapif_ONE; |
192b9cd1 AB |
865 | } |
866 | ||
80305961 | 867 | SP -= items; |
fdae9473 | 868 | PUTBACK; |
80305961 | 869 | |
f1b875a0 | 870 | ret = CALLREG_NAMED_BUFF_ALL(rx, (flags | RXapif_REGNAMES)); |
192b9cd1 AB |
871 | |
872 | SPAGAIN; | |
873 | ||
192b9cd1 AB |
874 | if (!ret) |
875 | XSRETURN_UNDEF; | |
876 | ||
502c6561 | 877 | av = MUTABLE_AV(SvRV(ret)); |
b9f2b683 | 878 | length = av_tindex(av); |
192b9cd1 | 879 | |
2102d7a2 | 880 | EXTEND(SP, length+1); /* better extend stack just once */ |
192b9cd1 AB |
881 | for (i = 0; i <= length; i++) { |
882 | entry = av_fetch(av, i, FALSE); | |
883 | ||
884 | if (!entry) | |
885 | Perl_croak(aTHX_ "NULL array element in re::regnames()"); | |
886 | ||
2102d7a2 | 887 | mPUSHs(SvREFCNT_inc_simple_NN(*entry)); |
80305961 | 888 | } |
ec83ea38 MHM |
889 | |
890 | SvREFCNT_dec(ret); | |
891 | ||
192b9cd1 AB |
892 | PUTBACK; |
893 | return; | |
80305961 YO |
894 | } |
895 | ||
15eb3045 | 896 | XS(XS_re_regexp_pattern); /* prototype to pass -Wmissing-prototypes */ |
192c1e27 JH |
897 | XS(XS_re_regexp_pattern) |
898 | { | |
192c1e27 JH |
899 | dXSARGS; |
900 | REGEXP *re; | |
1c23e2bd | 901 | U8 const gimme = GIMME_V; |
192c1e27 | 902 | |
22d874e2 DD |
903 | EXTEND(SP, 2); |
904 | SP -= items; | |
192c1e27 | 905 | if (items != 1) |
afa74d42 | 906 | croak_xs_usage(cv, "sv"); |
192c1e27 | 907 | |
192c1e27 JH |
908 | /* |
909 | Checks if a reference is a regex or not. If the parameter is | |
910 | not a ref, or is not the result of a qr// then returns false | |
911 | in scalar context and an empty list in list context. | |
912 | Otherwise in list context it returns the pattern and the | |
913 | modifiers, in scalar context it returns the pattern just as it | |
914 | would if the qr// was stringified normally, regardless as | |
486ec47a | 915 | to the class of the variable and any stringification overloads |
192c1e27 JH |
916 | on the object. |
917 | */ | |
918 | ||
919 | if ((re = SvRX(ST(0)))) /* assign deliberate */ | |
920 | { | |
22c985d5 | 921 | /* Houston, we have a regex! */ |
192c1e27 | 922 | SV *pattern; |
192c1e27 | 923 | |
b1dcc8e2 | 924 | if ( gimme == G_ARRAY ) { |
9de15fec | 925 | STRLEN left = 0; |
a62b1201 | 926 | char reflags[sizeof(INT_PAT_MODS) + MAX_CHARSET_NAME_LENGTH]; |
69af1167 SH |
927 | const char *fptr; |
928 | char ch; | |
929 | U16 match_flags; | |
930 | ||
192c1e27 JH |
931 | /* |
932 | we are in list context so stringify | |
933 | the modifiers that apply. We ignore "negative | |
a62b1201 | 934 | modifiers" in this scenario, and the default character set |
192c1e27 JH |
935 | */ |
936 | ||
a62b1201 KW |
937 | if (get_regex_charset(RX_EXTFLAGS(re)) != REGEX_DEPENDS_CHARSET) { |
938 | STRLEN len; | |
939 | const char* const name = get_regex_charset_name(RX_EXTFLAGS(re), | |
940 | &len); | |
941 | Copy(name, reflags + left, len, char); | |
942 | left += len; | |
9de15fec | 943 | } |
69af1167 | 944 | fptr = INT_PAT_MODS; |
73134a2e | 945 | match_flags = (U16)((RX_EXTFLAGS(re) & RXf_PMf_COMPILETIME) |
192c1e27 JH |
946 | >> RXf_PMf_STD_PMMOD_SHIFT); |
947 | ||
948 | while((ch = *fptr++)) { | |
949 | if(match_flags & 1) { | |
950 | reflags[left++] = ch; | |
951 | } | |
952 | match_flags >>= 1; | |
953 | } | |
954 | ||
fb632ce3 NC |
955 | pattern = newSVpvn_flags(RX_PRECOMP(re),RX_PRELEN(re), |
956 | (RX_UTF8(re) ? SVf_UTF8 : 0) | SVs_TEMP); | |
192c1e27 JH |
957 | |
958 | /* return the pattern and the modifiers */ | |
2102d7a2 S |
959 | PUSHs(pattern); |
960 | PUSHs(newSVpvn_flags(reflags, left, SVs_TEMP)); | |
192c1e27 JH |
961 | XSRETURN(2); |
962 | } else { | |
963 | /* Scalar, so use the string that Perl would return */ | |
33be4c61 | 964 | /* return the pattern in (?msixn:..) format */ |
daba3364 | 965 | pattern = sv_2mortal(newSVsv(MUTABLE_SV(re))); |
22d874e2 | 966 | PUSHs(pattern); |
192c1e27 JH |
967 | XSRETURN(1); |
968 | } | |
969 | } else { | |
970 | /* It ain't a regexp folks */ | |
b1dcc8e2 | 971 | if ( gimme == G_ARRAY ) { |
192c1e27 | 972 | /* return the empty list */ |
7b46bf4c | 973 | XSRETURN_EMPTY; |
192c1e27 JH |
974 | } else { |
975 | /* Because of the (?:..) wrapping involved in a | |
976 | stringified pattern it is impossible to get a | |
977 | result for a real regexp that would evaluate to | |
978 | false. Therefore we can return PL_sv_no to signify | |
979 | that the object is not a regex, this means that one | |
980 | can say | |
981 | ||
982 | if (regex($might_be_a_regex) eq '(?:foo)') { } | |
983 | ||
984 | and not worry about undefined values. | |
985 | */ | |
986 | XSRETURN_NO; | |
987 | } | |
988 | } | |
661d43c4 | 989 | NOT_REACHED; /* NOTREACHED */ |
192c1e27 JH |
990 | } |
991 | ||
b7a8ab8f | 992 | #include "vutil.h" |
abc6d738 FC |
993 | #include "vxs.inc" |
994 | ||
eff5b9d5 NC |
995 | struct xsub_details { |
996 | const char *name; | |
997 | XSUBADDR_t xsub; | |
998 | const char *proto; | |
999 | }; | |
1000 | ||
a9b7658f | 1001 | static const struct xsub_details details[] = { |
eff5b9d5 NC |
1002 | {"UNIVERSAL::isa", XS_UNIVERSAL_isa, NULL}, |
1003 | {"UNIVERSAL::can", XS_UNIVERSAL_can, NULL}, | |
1004 | {"UNIVERSAL::DOES", XS_UNIVERSAL_DOES, NULL}, | |
abc6d738 FC |
1005 | #define VXS_XSUB_DETAILS |
1006 | #include "vxs.inc" | |
1007 | #undef VXS_XSUB_DETAILS | |
eff5b9d5 NC |
1008 | {"utf8::is_utf8", XS_utf8_is_utf8, NULL}, |
1009 | {"utf8::valid", XS_utf8_valid, NULL}, | |
1010 | {"utf8::encode", XS_utf8_encode, NULL}, | |
1011 | {"utf8::decode", XS_utf8_decode, NULL}, | |
1012 | {"utf8::upgrade", XS_utf8_upgrade, NULL}, | |
1013 | {"utf8::downgrade", XS_utf8_downgrade, NULL}, | |
1014 | {"utf8::native_to_unicode", XS_utf8_native_to_unicode, NULL}, | |
1015 | {"utf8::unicode_to_native", XS_utf8_unicode_to_native, NULL}, | |
1016 | {"Internals::SvREADONLY", XS_Internals_SvREADONLY, "\\[$%@];$"}, | |
1017 | {"Internals::SvREFCNT", XS_Internals_SvREFCNT, "\\[$%@];$"}, | |
e312a16a | 1018 | {"Internals::hv_clear_placeholders", XS_Internals_hv_clear_placehold, "\\%"}, |
2b9dd398 | 1019 | {"constant::_make_const", XS_constant__make_const, "\\[$@]"}, |
eff5b9d5 | 1020 | {"PerlIO::get_layers", XS_PerlIO_get_layers, "*;@"}, |
eff5b9d5 NC |
1021 | {"re::is_regexp", XS_re_is_regexp, "$"}, |
1022 | {"re::regname", XS_re_regname, ";$$"}, | |
1023 | {"re::regnames", XS_re_regnames, ";$"}, | |
1024 | {"re::regnames_count", XS_re_regnames_count, ""}, | |
1025 | {"re::regexp_pattern", XS_re_regexp_pattern, "$"}, | |
eff5b9d5 NC |
1026 | }; |
1027 | ||
273e254d KW |
1028 | STATIC OP* |
1029 | optimize_out_native_convert_function(pTHX_ OP* entersubop, | |
1030 | GV* namegv, | |
1031 | SV* protosv) | |
1032 | { | |
1033 | /* Optimizes out an identity function, i.e., one that just returns its | |
1034 | * argument. The passed in function is assumed to be an identity function, | |
1035 | * with no checking. This is designed to be called for utf8_to_native() | |
1036 | * and native_to_utf8() on ASCII platforms, as they just return their | |
1037 | * arguments, but it could work on any such function. | |
1038 | * | |
1039 | * The code is mostly just cargo-culted from Memoize::Lift */ | |
1040 | ||
1041 | OP *pushop, *argop; | |
614f287f | 1042 | OP *parent; |
273e254d KW |
1043 | SV* prototype = newSVpvs("$"); |
1044 | ||
1045 | PERL_UNUSED_ARG(protosv); | |
1046 | ||
1047 | assert(entersubop->op_type == OP_ENTERSUB); | |
1048 | ||
1049 | entersubop = ck_entersub_args_proto(entersubop, namegv, prototype); | |
614f287f | 1050 | parent = entersubop; |
273e254d KW |
1051 | |
1052 | SvREFCNT_dec(prototype); | |
1053 | ||
1054 | pushop = cUNOPx(entersubop)->op_first; | |
bac7a184 | 1055 | if (! OpHAS_SIBLING(pushop)) { |
614f287f | 1056 | parent = pushop; |
273e254d KW |
1057 | pushop = cUNOPx(pushop)->op_first; |
1058 | } | |
614f287f | 1059 | argop = OpSIBLING(pushop); |
273e254d KW |
1060 | |
1061 | /* Carry on without doing the optimization if it is not something we're | |
1062 | * expecting, so continues to work */ | |
1063 | if ( ! argop | |
bac7a184 | 1064 | || ! OpHAS_SIBLING(argop) |
614f287f | 1065 | || OpHAS_SIBLING(OpSIBLING(argop)) |
273e254d KW |
1066 | ) { |
1067 | return entersubop; | |
1068 | } | |
1069 | ||
614f287f DM |
1070 | /* cut argop from the subtree */ |
1071 | (void)op_sibling_splice(parent, pushop, 1, NULL); | |
273e254d KW |
1072 | |
1073 | op_free(entersubop); | |
1074 | return argop; | |
1075 | } | |
1076 | ||
eff5b9d5 NC |
1077 | void |
1078 | Perl_boot_core_UNIVERSAL(pTHX) | |
1079 | { | |
eff5b9d5 | 1080 | static const char file[] = __FILE__; |
7a6ecb12 | 1081 | const struct xsub_details *xsub = details; |
c3caa5c3 | 1082 | const struct xsub_details *end = C_ARRAY_END(details); |
eff5b9d5 NC |
1083 | |
1084 | do { | |
1085 | newXS_flags(xsub->name, xsub->xsub, file, xsub->proto, 0); | |
1086 | } while (++xsub < end); | |
1087 | ||
273e254d KW |
1088 | #ifndef EBCDIC |
1089 | { /* On ASCII platforms these functions just return their argument, so can | |
1090 | be optimized away */ | |
1091 | ||
1092 | CV* to_native_cv = get_cv("utf8::unicode_to_native", 0); | |
1093 | CV* to_unicode_cv = get_cv("utf8::native_to_unicode", 0); | |
1094 | ||
1095 | cv_set_call_checker(to_native_cv, | |
1096 | optimize_out_native_convert_function, | |
1097 | (SV*) to_native_cv); | |
1098 | cv_set_call_checker(to_unicode_cv, | |
1099 | optimize_out_native_convert_function, | |
1100 | (SV*) to_unicode_cv); | |
1101 | } | |
1102 | #endif | |
1103 | ||
eff5b9d5 | 1104 | /* Providing a Regexp::DESTROY fixes #21347. See test in t/op/ref.t */ |
bad4ae38 FC |
1105 | { |
1106 | CV * const cv = | |
1107 | newCONSTSUB(get_hv("Regexp::", GV_ADD), "DESTROY", NULL); | |
5513c2cf DD |
1108 | char ** cvfile = &CvFILE(cv); |
1109 | char * oldfile = *cvfile; | |
bad4ae38 | 1110 | CvDYNFILE_off(cv); |
5513c2cf DD |
1111 | *cvfile = (char *)file; |
1112 | Safefree(oldfile); | |
bad4ae38 | 1113 | } |
eff5b9d5 | 1114 | } |
80305961 | 1115 | |
241d1a3b | 1116 | /* |
14d04a33 | 1117 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 1118 | */ |