Commit | Line | Data |
---|---|---|
d6376244 JH |
1 | /* universal.c |
2 | * | |
b5f8cc5c | 3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
acde74e1 | 4 | * 2005, 2006, 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 AT |
11 | /* |
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 story | |
15 | */ | |
16 | ||
166f8a29 DM |
17 | /* This file contains the code that implements the functions in Perl's |
18 | * UNIVERSAL package, such as UNIVERSAL->can(). | |
19 | */ | |
20 | ||
6d4a7be2 | 21 | #include "EXTERN.h" |
864dbfa3 | 22 | #define PERL_IN_UNIVERSAL_C |
6d4a7be2 | 23 | #include "perl.h" |
6d4a7be2 | 24 | |
39f7a870 JH |
25 | #ifdef USE_PERLIO |
26 | #include "perliol.h" /* For the PERLIO_F_XXX */ | |
27 | #endif | |
28 | ||
6d4a7be2 | 29 | /* |
30 | * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com> | |
31 | * The main guts of traverse_isa was actually copied from gv_fetchmeth | |
32 | */ | |
33 | ||
a9ec700e | 34 | STATIC bool |
301daebc MS |
35 | S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash, |
36 | int len, int level) | |
6d4a7be2 | 37 | { |
97aff369 | 38 | dVAR; |
6d4a7be2 | 39 | AV* av; |
40 | GV* gv; | |
41 | GV** gvp; | |
5c284bb0 | 42 | HV* hv = NULL; |
c445ea15 | 43 | SV* subgen = NULL; |
bfcb3514 | 44 | const char *hvname; |
6d4a7be2 | 45 | |
301daebc MS |
46 | /* A stash/class can go by many names (ie. User == main::User), so |
47 | we compare the stash itself just in case */ | |
48 | if (name_stash && (stash == name_stash)) | |
a9ec700e | 49 | return TRUE; |
6d4a7be2 | 50 | |
bfcb3514 NC |
51 | hvname = HvNAME_get(stash); |
52 | ||
53 | if (strEQ(hvname, name)) | |
a9ec700e | 54 | return TRUE; |
6d4a7be2 | 55 | |
a1d407e8 | 56 | if (strEQ(name, "UNIVERSAL")) |
a9ec700e | 57 | return TRUE; |
a1d407e8 | 58 | |
6d4a7be2 | 59 | if (level > 100) |
46e4b22b | 60 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
bfcb3514 | 61 | hvname); |
6d4a7be2 | 62 | |
017a3ce5 | 63 | gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", FALSE); |
6d4a7be2 | 64 | |
46e4b22b GS |
65 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv)) |
66 | && (hv = GvHV(gv))) | |
67 | { | |
eb160463 | 68 | if (SvIV(subgen) == (IV)PL_sub_generation) { |
46e4b22b | 69 | SV* sv; |
7452cf6a | 70 | SV** const svp = (SV**)hv_fetch(hv, name, len, FALSE); |
46e4b22b GS |
71 | if (svp && (sv = *svp) != (SV*)&PL_sv_undef) { |
72 | DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n", | |
bfcb3514 | 73 | name, hvname) ); |
a9ec700e | 74 | return (sv == &PL_sv_yes); |
46e4b22b GS |
75 | } |
76 | } | |
77 | else { | |
78 | DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", | |
bfcb3514 | 79 | hvname) ); |
46e4b22b GS |
80 | hv_clear(hv); |
81 | sv_setiv(subgen, PL_sub_generation); | |
82 | } | |
6d4a7be2 | 83 | } |
84 | ||
017a3ce5 | 85 | gvp = (GV**)hv_fetchs(stash, "ISA", FALSE); |
46e4b22b | 86 | |
3280af22 | 87 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
46e4b22b | 88 | if (!hv || !subgen) { |
017a3ce5 | 89 | gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", TRUE); |
6d4a7be2 | 90 | |
91 | gv = *gvp; | |
92 | ||
93 | if (SvTYPE(gv) != SVt_PVGV) | |
94 | gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); | |
95 | ||
46e4b22b GS |
96 | if (!hv) |
97 | hv = GvHVn(gv); | |
98 | if (!subgen) { | |
99 | subgen = newSViv(PL_sub_generation); | |
100 | GvSV(gv) = subgen; | |
101 | } | |
6d4a7be2 | 102 | } |
46e4b22b | 103 | if (hv) { |
6d4a7be2 | 104 | SV** svp = AvARRAY(av); |
93965878 NIS |
105 | /* NOTE: No support for tied ISA */ |
106 | I32 items = AvFILLp(av) + 1; | |
6d4a7be2 | 107 | while (items--) { |
c4420975 AL |
108 | SV* const sv = *svp++; |
109 | HV* const basestash = gv_stashsv(sv, FALSE); | |
6d4a7be2 | 110 | if (!basestash) { |
599cee73 | 111 | if (ckWARN(WARN_MISC)) |
9014280d | 112 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bfcb3514 | 113 | "Can't locate package %"SVf" for @%s::ISA", |
95b63a38 | 114 | (void*)sv, hvname); |
6d4a7be2 | 115 | continue; |
116 | } | |
a9ec700e | 117 | if (isa_lookup(basestash, name, name_stash, len, level + 1)) { |
3280af22 | 118 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
a9ec700e | 119 | return TRUE; |
6d4a7be2 | 120 | } |
121 | } | |
3280af22 | 122 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 | 123 | } |
124 | } | |
a9ec700e | 125 | return FALSE; |
6d4a7be2 | 126 | } |
127 | ||
954c1994 | 128 | /* |
ccfc67b7 JH |
129 | =head1 SV Manipulation Functions |
130 | ||
954c1994 GS |
131 | =for apidoc sv_derived_from |
132 | ||
6885da0e | 133 | Returns a boolean indicating whether the SV is derived from the specified class |
134 | I<at the C level>. To check derivation at the Perl level, call C<isa()> as a | |
135 | normal Perl method. | |
954c1994 GS |
136 | |
137 | =cut | |
138 | */ | |
139 | ||
55497cff | 140 | bool |
864dbfa3 | 141 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff | 142 | { |
97aff369 | 143 | dVAR; |
0b6f4f5c | 144 | HV *stash; |
46e4b22b | 145 | |
5b295bef | 146 | SvGETMAGIC(sv); |
55497cff | 147 | |
148 | if (SvROK(sv)) { | |
0b6f4f5c | 149 | const char *type; |
55497cff | 150 | sv = SvRV(sv); |
151 | type = sv_reftype(sv,0); | |
0b6f4f5c AL |
152 | if (type && strEQ(type,name)) |
153 | return TRUE; | |
154 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; | |
55497cff | 155 | } |
156 | else { | |
157 | stash = gv_stashsv(sv, FALSE); | |
158 | } | |
46e4b22b | 159 | |
0b6f4f5c AL |
160 | if (stash) { |
161 | HV * const name_stash = gv_stashpv(name, FALSE); | |
a9ec700e | 162 | return isa_lookup(stash, name, name_stash, strlen(name), 0); |
0b6f4f5c AL |
163 | } |
164 | else | |
165 | return FALSE; | |
301daebc | 166 | |
55497cff | 167 | } |
168 | ||
1b026014 NIS |
169 | #include "XSUB.h" |
170 | ||
27da23d5 JH |
171 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
172 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); | |
173 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); | |
439cb1c4 JP |
174 | XS(XS_version_new); |
175 | XS(XS_version_stringify); | |
176 | XS(XS_version_numify); | |
9137345a | 177 | XS(XS_version_normal); |
439cb1c4 JP |
178 | XS(XS_version_vcmp); |
179 | XS(XS_version_boolean); | |
2dfd8427 AL |
180 | #ifdef HASATTRIBUTE_NORETURN |
181 | XS(XS_version_noop) __attribute__noreturn__; | |
182 | #else | |
439cb1c4 | 183 | XS(XS_version_noop); |
2dfd8427 | 184 | #endif |
c8d69e4a | 185 | XS(XS_version_is_alpha); |
137d6fc0 | 186 | XS(XS_version_qv); |
8800c35a | 187 | XS(XS_utf8_is_utf8); |
1b026014 NIS |
188 | XS(XS_utf8_valid); |
189 | XS(XS_utf8_encode); | |
190 | XS(XS_utf8_decode); | |
191 | XS(XS_utf8_upgrade); | |
192 | XS(XS_utf8_downgrade); | |
193 | XS(XS_utf8_unicode_to_native); | |
194 | XS(XS_utf8_native_to_unicode); | |
29569577 JH |
195 | XS(XS_Internals_SvREADONLY); |
196 | XS(XS_Internals_SvREFCNT); | |
f044d0d1 | 197 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 | 198 | XS(XS_PerlIO_get_layers); |
39cff0d9 | 199 | XS(XS_Regexp_DESTROY); |
9a7034eb | 200 | XS(XS_Internals_hash_seed); |
008fb0c0 | 201 | XS(XS_Internals_rehash_seed); |
05619474 | 202 | XS(XS_Internals_HvREHASH); |
e1234d8e | 203 | XS(XS_Internals_inc_sub_generation); |
0cb96387 GS |
204 | |
205 | void | |
206 | Perl_boot_core_UNIVERSAL(pTHX) | |
207 | { | |
97aff369 | 208 | dVAR; |
157e3fc8 | 209 | static const char file[] = __FILE__; |
0cb96387 GS |
210 | |
211 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); | |
212 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); | |
213 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); | |
439cb1c4 | 214 | { |
ad63d80f JP |
215 | /* register the overloading (type 'A') magic */ |
216 | PL_amagic_generation++; | |
439cb1c4 | 217 | /* Make it findable via fetchmethod */ |
be2ebcad | 218 | newXS("version::()", XS_version_noop, file); |
439cb1c4 JP |
219 | newXS("version::new", XS_version_new, file); |
220 | newXS("version::(\"\"", XS_version_stringify, file); | |
221 | newXS("version::stringify", XS_version_stringify, file); | |
222 | newXS("version::(0+", XS_version_numify, file); | |
223 | newXS("version::numify", XS_version_numify, file); | |
9137345a | 224 | newXS("version::normal", XS_version_normal, file); |
439cb1c4 JP |
225 | newXS("version::(cmp", XS_version_vcmp, file); |
226 | newXS("version::(<=>", XS_version_vcmp, file); | |
227 | newXS("version::vcmp", XS_version_vcmp, file); | |
228 | newXS("version::(bool", XS_version_boolean, file); | |
229 | newXS("version::boolean", XS_version_boolean, file); | |
230 | newXS("version::(nomethod", XS_version_noop, file); | |
231 | newXS("version::noop", XS_version_noop, file); | |
c8d69e4a | 232 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 | 233 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 | 234 | } |
8800c35a | 235 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 NIS |
236 | newXS("utf8::valid", XS_utf8_valid, file); |
237 | newXS("utf8::encode", XS_utf8_encode, file); | |
238 | newXS("utf8::decode", XS_utf8_decode, file); | |
239 | newXS("utf8::upgrade", XS_utf8_upgrade, file); | |
240 | newXS("utf8::downgrade", XS_utf8_downgrade, file); | |
241 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); | |
242 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); | |
29569577 JH |
243 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
244 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); | |
dfd4ef2f | 245 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 | 246 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce JH |
247 | newXSproto("PerlIO::get_layers", |
248 | XS_PerlIO_get_layers, file, "*;@"); | |
39cff0d9 | 249 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb | 250 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 | 251 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 | 252 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
e1234d8e NC |
253 | newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation, |
254 | file, ""); | |
0cb96387 GS |
255 | } |
256 | ||
55497cff | 257 | |
6d4a7be2 | 258 | XS(XS_UNIVERSAL_isa) |
259 | { | |
97aff369 | 260 | dVAR; |
6d4a7be2 | 261 | dXSARGS; |
6d4a7be2 | 262 | |
263 | if (items != 2) | |
cea2e8a9 | 264 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
c4420975 AL |
265 | else { |
266 | SV * const sv = ST(0); | |
267 | const char *name; | |
6d4a7be2 | 268 | |
c4420975 | 269 | SvGETMAGIC(sv); |
d3f7f2b2 | 270 | |
c4420975 AL |
271 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
272 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
273 | XSRETURN_UNDEF; | |
f8f70380 | 274 | |
c4420975 | 275 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 | 276 | |
c4420975 AL |
277 | ST(0) = boolSV(sv_derived_from(sv, name)); |
278 | XSRETURN(1); | |
279 | } | |
6d4a7be2 | 280 | } |
281 | ||
6d4a7be2 | 282 | XS(XS_UNIVERSAL_can) |
283 | { | |
97aff369 | 284 | dVAR; |
6d4a7be2 | 285 | dXSARGS; |
286 | SV *sv; | |
6867be6d | 287 | const char *name; |
6d4a7be2 | 288 | SV *rv; |
6f08146e | 289 | HV *pkg = NULL; |
6d4a7be2 | 290 | |
291 | if (items != 2) | |
cea2e8a9 | 292 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 | 293 | |
294 | sv = ST(0); | |
f8f70380 | 295 | |
5b295bef | 296 | SvGETMAGIC(sv); |
d3f7f2b2 | 297 | |
253ecd6d RGS |
298 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
299 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
300 | XSRETURN_UNDEF; |
301 | ||
0510663f | 302 | name = SvPV_nolen_const(ST(1)); |
3280af22 | 303 | rv = &PL_sv_undef; |
6d4a7be2 | 304 | |
46e4b22b | 305 | if (SvROK(sv)) { |
6f08146e | 306 | sv = (SV*)SvRV(sv); |
46e4b22b | 307 | if (SvOBJECT(sv)) |
6f08146e NIS |
308 | pkg = SvSTASH(sv); |
309 | } | |
310 | else { | |
311 | pkg = gv_stashsv(sv, FALSE); | |
312 | } | |
313 | ||
314 | if (pkg) { | |
c4420975 | 315 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
dc848c6f | 316 | if (gv && isGV(gv)) |
317 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); | |
6d4a7be2 | 318 | } |
319 | ||
320 | ST(0) = rv; | |
321 | XSRETURN(1); | |
322 | } | |
323 | ||
6d4a7be2 | 324 | XS(XS_UNIVERSAL_VERSION) |
325 | { | |
97aff369 | 326 | dVAR; |
6d4a7be2 | 327 | dXSARGS; |
328 | HV *pkg; | |
329 | GV **gvp; | |
330 | GV *gv; | |
331 | SV *sv; | |
e1ec3a88 | 332 | const char *undef; |
6d4a7be2 | 333 | |
1571675a | 334 | if (SvROK(ST(0))) { |
6d4a7be2 | 335 | sv = (SV*)SvRV(ST(0)); |
1571675a | 336 | if (!SvOBJECT(sv)) |
cea2e8a9 | 337 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 338 | pkg = SvSTASH(sv); |
339 | } | |
340 | else { | |
341 | pkg = gv_stashsv(ST(0), FALSE); | |
342 | } | |
343 | ||
4608196e | 344 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
6d4a7be2 | 345 | |
0008872a | 346 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
c4420975 | 347 | SV * const nsv = sv_newmortal(); |
6d4a7be2 | 348 | sv_setsv(nsv, sv); |
349 | sv = nsv; | |
137d6fc0 JP |
350 | if ( !sv_derived_from(sv, "version")) |
351 | upg_version(sv); | |
c445ea15 | 352 | undef = NULL; |
6d4a7be2 | 353 | } |
354 | else { | |
3280af22 | 355 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 | 356 | undef = "(undef)"; |
357 | } | |
358 | ||
1571675a | 359 | if (items > 1) { |
1571675a GS |
360 | SV *req = ST(1); |
361 | ||
62658f4d | 362 | if (undef) { |
bfcb3514 | 363 | if (pkg) { |
c4420975 | 364 | const char * const name = HvNAME_get(pkg); |
a3b680e6 | 365 | Perl_croak(aTHX_ |
bfcb3514 NC |
366 | "%s does not define $%s::VERSION--version check failed", |
367 | name, name); | |
368 | } else { | |
a3b680e6 AL |
369 | Perl_croak(aTHX_ |
370 | "%s defines neither package nor VERSION--version check failed", | |
0510663f | 371 | SvPVx_nolen_const(ST(0)) ); |
62658f4d PM |
372 | } |
373 | } | |
ad63d80f | 374 | |
137d6fc0 JP |
375 | if ( !sv_derived_from(req, "version")) { |
376 | /* req may very well be R/O, so create a new object */ | |
c4420975 | 377 | SV * const nsv = sv_newmortal(); |
137d6fc0 JP |
378 | sv_setsv(nsv, req); |
379 | req = nsv; | |
380 | upg_version(req); | |
381 | } | |
1571675a | 382 | |
137d6fc0 | 383 | if ( vcmp( req, sv ) > 0 ) |
b9381830 | 384 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
95b63a38 JH |
385 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
386 | (void*)vnumify(req), | |
387 | (void*)vnormal(req), | |
388 | (void*)vnumify(sv), | |
389 | (void*)vnormal(sv)); | |
2d8e6c8d | 390 | } |
6d4a7be2 | 391 | |
2b140d5b | 392 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 | 393 | ST(0) = vnumify(sv); |
13f8f398 JP |
394 | } else { |
395 | ST(0) = sv; | |
b38a9dc5 | 396 | } |
6d4a7be2 | 397 | |
398 | XSRETURN(1); | |
399 | } | |
400 | ||
439cb1c4 JP |
401 | XS(XS_version_new) |
402 | { | |
97aff369 | 403 | dVAR; |
439cb1c4 | 404 | dXSARGS; |
129318bd | 405 | if (items > 3) |
439cb1c4 JP |
406 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
407 | SP -= items; | |
408 | { | |
137d6fc0 JP |
409 | SV *vs = ST(1); |
410 | SV *rv; | |
c4420975 AL |
411 | const char * const classname = |
412 | sv_isobject(ST(0)) /* get the class if called as an object method */ | |
413 | ? HvNAME(SvSTASH(SvRV(ST(0)))) | |
414 | : (char *)SvPV_nolen(ST(0)); | |
9137345a | 415 | |
92dcf8ce JP |
416 | if ( items == 1 || vs == &PL_sv_undef ) { /* no param or explicit undef */ |
417 | /* create empty object */ | |
418 | vs = sv_newmortal(); | |
419 | sv_setpvn(vs,"",0); | |
9137345a JP |
420 | } |
421 | else if ( items == 3 ) { | |
422 | vs = sv_newmortal(); | |
cfd0369c | 423 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd | 424 | } |
439cb1c4 | 425 | |
137d6fc0 | 426 | rv = new_version(vs); |
0723351e NC |
427 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
428 | sv_bless(rv, gv_stashpv(classname,TRUE)); | |
137d6fc0 JP |
429 | |
430 | PUSHs(sv_2mortal(rv)); | |
439cb1c4 JP |
431 | PUTBACK; |
432 | return; | |
433 | } | |
434 | } | |
435 | ||
436 | XS(XS_version_stringify) | |
437 | { | |
97aff369 | 438 | dVAR; |
41be1fbd JH |
439 | dXSARGS; |
440 | if (items < 1) | |
441 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
442 | SP -= items; | |
443 | { | |
7452cf6a | 444 | SV * lobj; |
41be1fbd JH |
445 | |
446 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 447 | lobj = SvRV(ST(0)); |
41be1fbd JH |
448 | } |
449 | else | |
450 | Perl_croak(aTHX_ "lobj is not of type version"); | |
451 | ||
137d6fc0 | 452 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd JH |
453 | |
454 | PUTBACK; | |
455 | return; | |
456 | } | |
439cb1c4 JP |
457 | } |
458 | ||
459 | XS(XS_version_numify) | |
460 | { | |
97aff369 | 461 | dVAR; |
41be1fbd JH |
462 | dXSARGS; |
463 | if (items < 1) | |
464 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
465 | SP -= items; | |
466 | { | |
7452cf6a | 467 | SV * lobj; |
41be1fbd JH |
468 | |
469 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 470 | lobj = SvRV(ST(0)); |
41be1fbd JH |
471 | } |
472 | else | |
473 | Perl_croak(aTHX_ "lobj is not of type version"); | |
474 | ||
137d6fc0 | 475 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd JH |
476 | |
477 | PUTBACK; | |
478 | return; | |
479 | } | |
439cb1c4 JP |
480 | } |
481 | ||
9137345a JP |
482 | XS(XS_version_normal) |
483 | { | |
97aff369 | 484 | dVAR; |
9137345a JP |
485 | dXSARGS; |
486 | if (items < 1) | |
487 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); | |
488 | SP -= items; | |
489 | { | |
7452cf6a | 490 | SV * lobj; |
9137345a JP |
491 | |
492 | if (sv_derived_from(ST(0), "version")) { | |
493 | lobj = SvRV(ST(0)); | |
494 | } | |
495 | else | |
496 | Perl_croak(aTHX_ "lobj is not of type version"); | |
497 | ||
498 | PUSHs(sv_2mortal(vnormal(lobj))); | |
499 | ||
500 | PUTBACK; | |
501 | return; | |
502 | } | |
503 | } | |
504 | ||
439cb1c4 JP |
505 | XS(XS_version_vcmp) |
506 | { | |
97aff369 | 507 | dVAR; |
41be1fbd JH |
508 | dXSARGS; |
509 | if (items < 1) | |
510 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
511 | SP -= items; | |
512 | { | |
7452cf6a | 513 | SV * lobj; |
41be1fbd JH |
514 | |
515 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 516 | lobj = SvRV(ST(0)); |
41be1fbd JH |
517 | } |
518 | else | |
519 | Perl_croak(aTHX_ "lobj is not of type version"); | |
520 | ||
521 | { | |
522 | SV *rs; | |
523 | SV *rvs; | |
524 | SV * robj = ST(1); | |
7452cf6a | 525 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd JH |
526 | |
527 | if ( ! sv_derived_from(robj, "version") ) | |
528 | { | |
529 | robj = new_version(robj); | |
530 | } | |
531 | rvs = SvRV(robj); | |
532 | ||
533 | if ( swap ) | |
534 | { | |
535 | rs = newSViv(vcmp(rvs,lobj)); | |
536 | } | |
537 | else | |
538 | { | |
539 | rs = newSViv(vcmp(lobj,rvs)); | |
540 | } | |
541 | ||
137d6fc0 | 542 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
543 | } |
544 | ||
545 | PUTBACK; | |
546 | return; | |
547 | } | |
439cb1c4 JP |
548 | } |
549 | ||
550 | XS(XS_version_boolean) | |
551 | { | |
97aff369 JH |
552 | dVAR; |
553 | dXSARGS; | |
554 | if (items < 1) | |
555 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
556 | SP -= items; | |
c4420975 AL |
557 | if (sv_derived_from(ST(0), "version")) { |
558 | SV * const lobj = SvRV(ST(0)); | |
396482e1 | 559 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
c4420975 AL |
560 | PUSHs(sv_2mortal(rs)); |
561 | PUTBACK; | |
562 | return; | |
563 | } | |
564 | else | |
565 | Perl_croak(aTHX_ "lobj is not of type version"); | |
439cb1c4 JP |
566 | } |
567 | ||
568 | XS(XS_version_noop) | |
569 | { | |
97aff369 | 570 | dVAR; |
2dfd8427 AL |
571 | dXSARGS; |
572 | if (items < 1) | |
573 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); | |
574 | if (sv_derived_from(ST(0), "version")) | |
575 | Perl_croak(aTHX_ "operation not supported with version object"); | |
576 | else | |
577 | Perl_croak(aTHX_ "lobj is not of type version"); | |
578 | #ifndef HASATTRIBUTE_NORETURN | |
579 | XSRETURN_EMPTY; | |
580 | #endif | |
439cb1c4 JP |
581 | } |
582 | ||
c8d69e4a JP |
583 | XS(XS_version_is_alpha) |
584 | { | |
97aff369 | 585 | dVAR; |
c8d69e4a JP |
586 | dXSARGS; |
587 | if (items != 1) | |
588 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); | |
589 | SP -= items; | |
c4420975 AL |
590 | if (sv_derived_from(ST(0), "version")) { |
591 | SV * const lobj = ST(0); | |
592 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) | |
593 | XSRETURN_YES; | |
594 | else | |
595 | XSRETURN_NO; | |
c8d69e4a JP |
596 | PUTBACK; |
597 | return; | |
598 | } | |
c4420975 AL |
599 | else |
600 | Perl_croak(aTHX_ "lobj is not of type version"); | |
c8d69e4a JP |
601 | } |
602 | ||
137d6fc0 JP |
603 | XS(XS_version_qv) |
604 | { | |
97aff369 | 605 | dVAR; |
137d6fc0 JP |
606 | dXSARGS; |
607 | if (items != 1) | |
608 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); | |
609 | SP -= items; | |
610 | { | |
611 | SV * ver = ST(0); | |
c4420975 AL |
612 | if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ |
613 | SV * const vs = sv_newmortal(); | |
137d6fc0 JP |
614 | char *version; |
615 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
616 | { | |
617 | char tbuf[64]; | |
d9fad198 | 618 | const STRLEN len = my_snprintf(tbuf, sizeof(tbuf), "%.9"NVgf, SvNVX(ver)); |
86c11942 | 619 | version = savepvn(tbuf, len); |
137d6fc0 JP |
620 | } |
621 | else | |
622 | { | |
2e0de35c | 623 | version = savesvpv(ver); |
137d6fc0 JP |
624 | } |
625 | (void)scan_version(version,vs,TRUE); | |
626 | Safefree(version); | |
627 | ||
628 | PUSHs(vs); | |
629 | } | |
630 | else | |
631 | { | |
632 | PUSHs(sv_2mortal(new_version(ver))); | |
633 | } | |
634 | ||
635 | PUTBACK; | |
636 | return; | |
637 | } | |
638 | } | |
639 | ||
8800c35a JH |
640 | XS(XS_utf8_is_utf8) |
641 | { | |
97aff369 | 642 | dVAR; |
41be1fbd JH |
643 | dXSARGS; |
644 | if (items != 1) | |
645 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
c4420975 AL |
646 | else { |
647 | const SV * const sv = ST(0); | |
648 | if (SvUTF8(sv)) | |
649 | XSRETURN_YES; | |
650 | else | |
651 | XSRETURN_NO; | |
41be1fbd JH |
652 | } |
653 | XSRETURN_EMPTY; | |
8800c35a JH |
654 | } |
655 | ||
1b026014 NIS |
656 | XS(XS_utf8_valid) |
657 | { | |
97aff369 | 658 | dVAR; |
41be1fbd JH |
659 | dXSARGS; |
660 | if (items != 1) | |
661 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
c4420975 AL |
662 | else { |
663 | SV * const sv = ST(0); | |
664 | STRLEN len; | |
665 | const char * const s = SvPV_const(sv,len); | |
666 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
667 | XSRETURN_YES; | |
668 | else | |
669 | XSRETURN_NO; | |
670 | } | |
41be1fbd | 671 | XSRETURN_EMPTY; |
1b026014 NIS |
672 | } |
673 | ||
674 | XS(XS_utf8_encode) | |
675 | { | |
97aff369 | 676 | dVAR; |
1b026014 NIS |
677 | dXSARGS; |
678 | if (items != 1) | |
679 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); | |
c4420975 | 680 | sv_utf8_encode(ST(0)); |
1b026014 NIS |
681 | XSRETURN_EMPTY; |
682 | } | |
683 | ||
684 | XS(XS_utf8_decode) | |
685 | { | |
97aff369 | 686 | dVAR; |
1b026014 NIS |
687 | dXSARGS; |
688 | if (items != 1) | |
689 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); | |
c4420975 AL |
690 | else { |
691 | SV * const sv = ST(0); | |
6867be6d | 692 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 NIS |
693 | ST(0) = boolSV(RETVAL); |
694 | sv_2mortal(ST(0)); | |
695 | } | |
696 | XSRETURN(1); | |
697 | } | |
698 | ||
699 | XS(XS_utf8_upgrade) | |
700 | { | |
97aff369 | 701 | dVAR; |
1b026014 NIS |
702 | dXSARGS; |
703 | if (items != 1) | |
704 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); | |
c4420975 AL |
705 | else { |
706 | SV * const sv = ST(0); | |
1b026014 NIS |
707 | STRLEN RETVAL; |
708 | dXSTARG; | |
709 | ||
710 | RETVAL = sv_utf8_upgrade(sv); | |
711 | XSprePUSH; PUSHi((IV)RETVAL); | |
712 | } | |
713 | XSRETURN(1); | |
714 | } | |
715 | ||
716 | XS(XS_utf8_downgrade) | |
717 | { | |
97aff369 | 718 | dVAR; |
1b026014 NIS |
719 | dXSARGS; |
720 | if (items < 1 || items > 2) | |
721 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); | |
c4420975 AL |
722 | else { |
723 | SV * const sv = ST(0); | |
6867be6d AL |
724 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
725 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 726 | |
1b026014 NIS |
727 | ST(0) = boolSV(RETVAL); |
728 | sv_2mortal(ST(0)); | |
729 | } | |
730 | XSRETURN(1); | |
731 | } | |
732 | ||
733 | XS(XS_utf8_native_to_unicode) | |
734 | { | |
97aff369 | 735 | dVAR; |
1b026014 | 736 | dXSARGS; |
6867be6d | 737 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
738 | |
739 | if (items > 1) | |
740 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
741 | ||
1b026014 NIS |
742 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
743 | XSRETURN(1); | |
744 | } | |
745 | ||
746 | XS(XS_utf8_unicode_to_native) | |
747 | { | |
97aff369 | 748 | dVAR; |
1b026014 | 749 | dXSARGS; |
6867be6d | 750 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
751 | |
752 | if (items > 1) | |
753 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
754 | ||
1b026014 NIS |
755 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
756 | XSRETURN(1); | |
757 | } | |
758 | ||
14a976d6 | 759 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 | 760 | { |
97aff369 | 761 | dVAR; |
29569577 | 762 | dXSARGS; |
c4420975 | 763 | SV * const sv = SvRV(ST(0)); |
6867be6d | 764 | |
29569577 JH |
765 | if (items == 1) { |
766 | if (SvREADONLY(sv)) | |
767 | XSRETURN_YES; | |
768 | else | |
769 | XSRETURN_NO; | |
770 | } | |
771 | else if (items == 2) { | |
772 | if (SvTRUE(ST(1))) { | |
773 | SvREADONLY_on(sv); | |
774 | XSRETURN_YES; | |
775 | } | |
776 | else { | |
14a976d6 | 777 | /* I hope you really know what you are doing. */ |
29569577 JH |
778 | SvREADONLY_off(sv); |
779 | XSRETURN_NO; | |
780 | } | |
781 | } | |
14a976d6 | 782 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
783 | } |
784 | ||
14a976d6 | 785 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 | 786 | { |
97aff369 | 787 | dVAR; |
29569577 | 788 | dXSARGS; |
c4420975 | 789 | SV * const sv = SvRV(ST(0)); |
6867be6d | 790 | |
29569577 | 791 | if (items == 1) |
14a976d6 | 792 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 | 793 | else if (items == 2) { |
14a976d6 | 794 | /* I hope you really know what you are doing. */ |
29569577 JH |
795 | SvREFCNT(sv) = SvIV(ST(1)); |
796 | XSRETURN_IV(SvREFCNT(sv)); | |
797 | } | |
14a976d6 | 798 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
799 | } |
800 | ||
f044d0d1 | 801 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f | 802 | { |
97aff369 | 803 | dVAR; |
dfd4ef2f | 804 | dXSARGS; |
6867be6d | 805 | |
3540d4ce AB |
806 | if (items != 1) |
807 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); | |
c4420975 AL |
808 | else { |
809 | HV * const hv = (HV *) SvRV(ST(0)); | |
810 | hv_clear_placeholders(hv); | |
811 | XSRETURN(0); | |
812 | } | |
dfd4ef2f | 813 | } |
39f7a870 | 814 | |
39cff0d9 AE |
815 | XS(XS_Regexp_DESTROY) |
816 | { | |
96a5add6 | 817 | PERL_UNUSED_CONTEXT; |
53c1dcc0 | 818 | PERL_UNUSED_ARG(cv); |
39cff0d9 AE |
819 | } |
820 | ||
39f7a870 JH |
821 | XS(XS_PerlIO_get_layers) |
822 | { | |
97aff369 | 823 | dVAR; |
39f7a870 JH |
824 | dXSARGS; |
825 | if (items < 1 || items % 2 == 0) | |
826 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); | |
5fef3b4a | 827 | #ifdef USE_PERLIO |
39f7a870 JH |
828 | { |
829 | SV * sv; | |
830 | GV * gv; | |
831 | IO * io; | |
832 | bool input = TRUE; | |
833 | bool details = FALSE; | |
834 | ||
835 | if (items > 1) { | |
c4420975 | 836 | SV * const *svp; |
39f7a870 | 837 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
838 | SV * const * const varp = svp; |
839 | SV * const * const valp = svp + 1; | |
39f7a870 | 840 | STRLEN klen; |
c4420975 | 841 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
842 | |
843 | switch (*key) { | |
844 | case 'i': | |
845 | if (klen == 5 && memEQ(key, "input", 5)) { | |
846 | input = SvTRUE(*valp); | |
847 | break; | |
848 | } | |
849 | goto fail; | |
850 | case 'o': | |
851 | if (klen == 6 && memEQ(key, "output", 6)) { | |
852 | input = !SvTRUE(*valp); | |
853 | break; | |
854 | } | |
855 | goto fail; | |
856 | case 'd': | |
857 | if (klen == 7 && memEQ(key, "details", 7)) { | |
858 | details = SvTRUE(*valp); | |
859 | break; | |
860 | } | |
861 | goto fail; | |
862 | default: | |
863 | fail: | |
864 | Perl_croak(aTHX_ | |
865 | "get_layers: unknown argument '%s'", | |
866 | key); | |
867 | } | |
868 | } | |
869 | ||
870 | SP -= (items - 1); | |
871 | } | |
872 | ||
873 | sv = POPs; | |
874 | gv = (GV*)sv; | |
875 | ||
876 | if (!isGV(sv)) { | |
877 | if (SvROK(sv) && isGV(SvRV(sv))) | |
878 | gv = (GV*)SvRV(sv); | |
671d49be | 879 | else if (SvPOKp(sv)) |
f776e3cd | 880 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
39f7a870 JH |
881 | } |
882 | ||
883 | if (gv && (io = GvIO(gv))) { | |
884 | dTARGET; | |
c4420975 | 885 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 JH |
886 | IoIFP(io) : IoOFP(io)); |
887 | I32 i; | |
c4420975 | 888 | const I32 last = av_len(av); |
39f7a870 JH |
889 | I32 nitem = 0; |
890 | ||
891 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
892 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
893 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
894 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 895 | |
c4420975 AL |
896 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
897 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
898 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 JH |
899 | |
900 | if (details) { | |
ec3bab8e NC |
901 | XPUSHs(namok |
902 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) | |
903 | : &PL_sv_undef); | |
904 | XPUSHs(argok | |
905 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) | |
906 | : &PL_sv_undef); | |
39f7a870 JH |
907 | if (flgok) |
908 | XPUSHi(SvIVX(*flgsvp)); | |
909 | else | |
910 | XPUSHs(&PL_sv_undef); | |
911 | nitem += 3; | |
912 | } | |
913 | else { | |
914 | if (namok && argok) | |
915 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", | |
95b63a38 JH |
916 | (void*)*namsvp, |
917 | (void*)*argsvp)); | |
39f7a870 | 918 | else if (namok) |
95b63a38 JH |
919 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, |
920 | (void*)*namsvp)); | |
39f7a870 JH |
921 | else |
922 | XPUSHs(&PL_sv_undef); | |
923 | nitem++; | |
924 | if (flgok) { | |
c4420975 | 925 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
926 | |
927 | if (flags & PERLIO_F_UTF8) { | |
396482e1 | 928 | XPUSHs(newSVpvs("utf8")); |
39f7a870 JH |
929 | nitem++; |
930 | } | |
931 | } | |
932 | } | |
933 | } | |
934 | ||
935 | SvREFCNT_dec(av); | |
936 | ||
937 | XSRETURN(nitem); | |
938 | } | |
939 | } | |
5fef3b4a | 940 | #endif |
39f7a870 JH |
941 | |
942 | XSRETURN(0); | |
943 | } | |
944 | ||
9a7034eb | 945 | XS(XS_Internals_hash_seed) |
c910b28a | 946 | { |
97aff369 | 947 | dVAR; |
c85d3f85 NC |
948 | /* Using dXSARGS would also have dITEM and dSP, |
949 | * which define 2 unused local variables. */ | |
557b887a | 950 | dAXMARK; |
53c1dcc0 | 951 | PERL_UNUSED_ARG(cv); |
ad73156c | 952 | PERL_UNUSED_VAR(mark); |
81eaca17 | 953 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a JH |
954 | } |
955 | ||
008fb0c0 | 956 | XS(XS_Internals_rehash_seed) |
8e90d776 | 957 | { |
97aff369 | 958 | dVAR; |
8e90d776 NC |
959 | /* Using dXSARGS would also have dITEM and dSP, |
960 | * which define 2 unused local variables. */ | |
557b887a | 961 | dAXMARK; |
53c1dcc0 | 962 | PERL_UNUSED_ARG(cv); |
ad73156c | 963 | PERL_UNUSED_VAR(mark); |
008fb0c0 | 964 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 NC |
965 | } |
966 | ||
05619474 NC |
967 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
968 | { | |
97aff369 | 969 | dVAR; |
05619474 NC |
970 | dXSARGS; |
971 | if (SvROK(ST(0))) { | |
c4420975 | 972 | const HV * const hv = (HV *) SvRV(ST(0)); |
05619474 NC |
973 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
974 | if (HvREHASH(hv)) | |
975 | XSRETURN_YES; | |
976 | else | |
977 | XSRETURN_NO; | |
978 | } | |
979 | } | |
980 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); | |
981 | } | |
241d1a3b | 982 | |
e1234d8e NC |
983 | XS(XS_Internals_inc_sub_generation) |
984 | { | |
97aff369 | 985 | dVAR; |
e1234d8e NC |
986 | /* Using dXSARGS would also have dITEM and dSP, |
987 | * which define 2 unused local variables. */ | |
988 | dAXMARK; | |
989 | PERL_UNUSED_ARG(cv); | |
990 | PERL_UNUSED_VAR(mark); | |
991 | ++PL_sub_generation; | |
992 | XSRETURN_EMPTY; | |
993 | } | |
994 | ||
241d1a3b NC |
995 | /* |
996 | * Local variables: | |
997 | * c-indentation-style: bsd | |
998 | * c-basic-offset: 4 | |
999 | * indent-tabs-mode: t | |
1000 | * End: | |
1001 | * | |
37442d52 RGS |
1002 | * ex: set ts=8 sts=4 sw=4 noet: |
1003 | */ |