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 | ||
76e3520e | 34 | STATIC SV * |
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)) | |
49 | return &PL_sv_yes; | |
6d4a7be2 | 50 | |
bfcb3514 NC |
51 | hvname = HvNAME_get(stash); |
52 | ||
53 | if (strEQ(hvname, name)) | |
3280af22 | 54 | return &PL_sv_yes; |
6d4a7be2 | 55 | |
a1d407e8 DM |
56 | if (strEQ(name, "UNIVERSAL")) |
57 | return &PL_sv_yes; | |
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) ); |
46e4b22b GS |
74 | return sv; |
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 NC |
113 | "Can't locate package %"SVf" for @%s::ISA", |
114 | sv, hvname); | |
6d4a7be2 | 115 | continue; |
116 | } | |
301daebc MS |
117 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
118 | len, level + 1)) { | |
3280af22 NIS |
119 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
120 | return &PL_sv_yes; | |
6d4a7be2 | 121 | } |
122 | } | |
3280af22 | 123 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 | 124 | } |
125 | } | |
a1d407e8 | 126 | return &PL_sv_no; |
6d4a7be2 | 127 | } |
128 | ||
954c1994 | 129 | /* |
ccfc67b7 JH |
130 | =head1 SV Manipulation Functions |
131 | ||
954c1994 GS |
132 | =for apidoc sv_derived_from |
133 | ||
134 | Returns a boolean indicating whether the SV is derived from the specified | |
135 | class. This is the function that implements C<UNIVERSAL::isa>. It works | |
136 | for class names as well as for objects. | |
137 | ||
138 | =cut | |
139 | */ | |
140 | ||
55497cff | 141 | bool |
864dbfa3 | 142 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff | 143 | { |
97aff369 | 144 | dVAR; |
0b6f4f5c | 145 | HV *stash; |
46e4b22b | 146 | |
5b295bef | 147 | SvGETMAGIC(sv); |
55497cff | 148 | |
149 | if (SvROK(sv)) { | |
0b6f4f5c | 150 | const char *type; |
55497cff | 151 | sv = SvRV(sv); |
152 | type = sv_reftype(sv,0); | |
0b6f4f5c AL |
153 | if (type && strEQ(type,name)) |
154 | return TRUE; | |
155 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; | |
55497cff | 156 | } |
157 | else { | |
158 | stash = gv_stashsv(sv, FALSE); | |
159 | } | |
46e4b22b | 160 | |
0b6f4f5c AL |
161 | if (stash) { |
162 | HV * const name_stash = gv_stashpv(name, FALSE); | |
163 | return isa_lookup(stash, name, name_stash, strlen(name), 0) == &PL_sv_yes; | |
164 | } | |
165 | else | |
166 | return FALSE; | |
301daebc | 167 | |
55497cff | 168 | } |
169 | ||
1b026014 NIS |
170 | #include "XSUB.h" |
171 | ||
27da23d5 JH |
172 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
173 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); | |
174 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); | |
439cb1c4 JP |
175 | XS(XS_version_new); |
176 | XS(XS_version_stringify); | |
177 | XS(XS_version_numify); | |
9137345a | 178 | XS(XS_version_normal); |
439cb1c4 JP |
179 | XS(XS_version_vcmp); |
180 | XS(XS_version_boolean); | |
2dfd8427 AL |
181 | #ifdef HASATTRIBUTE_NORETURN |
182 | XS(XS_version_noop) __attribute__noreturn__; | |
183 | #else | |
439cb1c4 | 184 | XS(XS_version_noop); |
2dfd8427 | 185 | #endif |
c8d69e4a | 186 | XS(XS_version_is_alpha); |
137d6fc0 | 187 | XS(XS_version_qv); |
8800c35a | 188 | XS(XS_utf8_is_utf8); |
1b026014 NIS |
189 | XS(XS_utf8_valid); |
190 | XS(XS_utf8_encode); | |
191 | XS(XS_utf8_decode); | |
192 | XS(XS_utf8_upgrade); | |
193 | XS(XS_utf8_downgrade); | |
194 | XS(XS_utf8_unicode_to_native); | |
195 | XS(XS_utf8_native_to_unicode); | |
29569577 JH |
196 | XS(XS_Internals_SvREADONLY); |
197 | XS(XS_Internals_SvREFCNT); | |
f044d0d1 | 198 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 | 199 | XS(XS_PerlIO_get_layers); |
39cff0d9 | 200 | XS(XS_Regexp_DESTROY); |
9a7034eb | 201 | XS(XS_Internals_hash_seed); |
008fb0c0 | 202 | XS(XS_Internals_rehash_seed); |
05619474 | 203 | XS(XS_Internals_HvREHASH); |
e1234d8e | 204 | XS(XS_Internals_inc_sub_generation); |
0cb96387 GS |
205 | |
206 | void | |
207 | Perl_boot_core_UNIVERSAL(pTHX) | |
208 | { | |
97aff369 | 209 | dVAR; |
157e3fc8 | 210 | static const char file[] = __FILE__; |
0cb96387 GS |
211 | |
212 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); | |
213 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); | |
214 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); | |
439cb1c4 | 215 | { |
ad63d80f JP |
216 | /* register the overloading (type 'A') magic */ |
217 | PL_amagic_generation++; | |
439cb1c4 | 218 | /* Make it findable via fetchmethod */ |
be2ebcad | 219 | newXS("version::()", XS_version_noop, file); |
439cb1c4 JP |
220 | newXS("version::new", XS_version_new, file); |
221 | newXS("version::(\"\"", XS_version_stringify, file); | |
222 | newXS("version::stringify", XS_version_stringify, file); | |
223 | newXS("version::(0+", XS_version_numify, file); | |
224 | newXS("version::numify", XS_version_numify, file); | |
9137345a | 225 | newXS("version::normal", XS_version_normal, file); |
439cb1c4 JP |
226 | newXS("version::(cmp", XS_version_vcmp, file); |
227 | newXS("version::(<=>", XS_version_vcmp, file); | |
228 | newXS("version::vcmp", XS_version_vcmp, file); | |
229 | newXS("version::(bool", XS_version_boolean, file); | |
230 | newXS("version::boolean", XS_version_boolean, file); | |
231 | newXS("version::(nomethod", XS_version_noop, file); | |
232 | newXS("version::noop", XS_version_noop, file); | |
c8d69e4a | 233 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 | 234 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 | 235 | } |
8800c35a | 236 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 NIS |
237 | newXS("utf8::valid", XS_utf8_valid, file); |
238 | newXS("utf8::encode", XS_utf8_encode, file); | |
239 | newXS("utf8::decode", XS_utf8_decode, file); | |
240 | newXS("utf8::upgrade", XS_utf8_upgrade, file); | |
241 | newXS("utf8::downgrade", XS_utf8_downgrade, file); | |
242 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); | |
243 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); | |
29569577 JH |
244 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
245 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); | |
dfd4ef2f | 246 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 | 247 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce JH |
248 | newXSproto("PerlIO::get_layers", |
249 | XS_PerlIO_get_layers, file, "*;@"); | |
39cff0d9 | 250 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb | 251 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 | 252 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 | 253 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
e1234d8e NC |
254 | newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation, |
255 | file, ""); | |
0cb96387 GS |
256 | } |
257 | ||
55497cff | 258 | |
6d4a7be2 | 259 | XS(XS_UNIVERSAL_isa) |
260 | { | |
97aff369 | 261 | dVAR; |
6d4a7be2 | 262 | dXSARGS; |
6d4a7be2 | 263 | |
264 | if (items != 2) | |
cea2e8a9 | 265 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
c4420975 AL |
266 | else { |
267 | SV * const sv = ST(0); | |
268 | const char *name; | |
6d4a7be2 | 269 | |
c4420975 | 270 | SvGETMAGIC(sv); |
d3f7f2b2 | 271 | |
c4420975 AL |
272 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
273 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
274 | XSRETURN_UNDEF; | |
f8f70380 | 275 | |
c4420975 | 276 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 | 277 | |
c4420975 AL |
278 | ST(0) = boolSV(sv_derived_from(sv, name)); |
279 | XSRETURN(1); | |
280 | } | |
6d4a7be2 | 281 | } |
282 | ||
6d4a7be2 | 283 | XS(XS_UNIVERSAL_can) |
284 | { | |
97aff369 | 285 | dVAR; |
6d4a7be2 | 286 | dXSARGS; |
287 | SV *sv; | |
6867be6d | 288 | const char *name; |
6d4a7be2 | 289 | SV *rv; |
6f08146e | 290 | HV *pkg = NULL; |
6d4a7be2 | 291 | |
292 | if (items != 2) | |
cea2e8a9 | 293 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 | 294 | |
295 | sv = ST(0); | |
f8f70380 | 296 | |
5b295bef | 297 | SvGETMAGIC(sv); |
d3f7f2b2 | 298 | |
253ecd6d RGS |
299 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
300 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
301 | XSRETURN_UNDEF; |
302 | ||
0510663f | 303 | name = SvPV_nolen_const(ST(1)); |
3280af22 | 304 | rv = &PL_sv_undef; |
6d4a7be2 | 305 | |
46e4b22b | 306 | if (SvROK(sv)) { |
6f08146e | 307 | sv = (SV*)SvRV(sv); |
46e4b22b | 308 | if (SvOBJECT(sv)) |
6f08146e NIS |
309 | pkg = SvSTASH(sv); |
310 | } | |
311 | else { | |
312 | pkg = gv_stashsv(sv, FALSE); | |
313 | } | |
314 | ||
315 | if (pkg) { | |
c4420975 | 316 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
dc848c6f | 317 | if (gv && isGV(gv)) |
318 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); | |
6d4a7be2 | 319 | } |
320 | ||
321 | ST(0) = rv; | |
322 | XSRETURN(1); | |
323 | } | |
324 | ||
6d4a7be2 | 325 | XS(XS_UNIVERSAL_VERSION) |
326 | { | |
97aff369 | 327 | dVAR; |
6d4a7be2 | 328 | dXSARGS; |
329 | HV *pkg; | |
330 | GV **gvp; | |
331 | GV *gv; | |
332 | SV *sv; | |
e1ec3a88 | 333 | const char *undef; |
6d4a7be2 | 334 | |
1571675a | 335 | if (SvROK(ST(0))) { |
6d4a7be2 | 336 | sv = (SV*)SvRV(ST(0)); |
1571675a | 337 | if (!SvOBJECT(sv)) |
cea2e8a9 | 338 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 339 | pkg = SvSTASH(sv); |
340 | } | |
341 | else { | |
342 | pkg = gv_stashsv(ST(0), FALSE); | |
343 | } | |
344 | ||
4608196e | 345 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
6d4a7be2 | 346 | |
0008872a | 347 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
c4420975 | 348 | SV * const nsv = sv_newmortal(); |
6d4a7be2 | 349 | sv_setsv(nsv, sv); |
350 | sv = nsv; | |
137d6fc0 JP |
351 | if ( !sv_derived_from(sv, "version")) |
352 | upg_version(sv); | |
c445ea15 | 353 | undef = NULL; |
6d4a7be2 | 354 | } |
355 | else { | |
3280af22 | 356 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 | 357 | undef = "(undef)"; |
358 | } | |
359 | ||
1571675a | 360 | if (items > 1) { |
1571675a GS |
361 | SV *req = ST(1); |
362 | ||
62658f4d | 363 | if (undef) { |
bfcb3514 | 364 | if (pkg) { |
c4420975 | 365 | const char * const name = HvNAME_get(pkg); |
a3b680e6 | 366 | Perl_croak(aTHX_ |
bfcb3514 NC |
367 | "%s does not define $%s::VERSION--version check failed", |
368 | name, name); | |
369 | } else { | |
a3b680e6 AL |
370 | Perl_croak(aTHX_ |
371 | "%s defines neither package nor VERSION--version check failed", | |
0510663f | 372 | SvPVx_nolen_const(ST(0)) ); |
62658f4d PM |
373 | } |
374 | } | |
ad63d80f | 375 | |
137d6fc0 JP |
376 | if ( !sv_derived_from(req, "version")) { |
377 | /* req may very well be R/O, so create a new object */ | |
c4420975 | 378 | SV * const nsv = sv_newmortal(); |
137d6fc0 JP |
379 | sv_setsv(nsv, req); |
380 | req = nsv; | |
381 | upg_version(req); | |
382 | } | |
1571675a | 383 | |
137d6fc0 | 384 | if ( vcmp( req, sv ) > 0 ) |
b9381830 | 385 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
bfcb3514 | 386 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
b9381830 | 387 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d | 388 | } |
6d4a7be2 | 389 | |
2b140d5b | 390 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 | 391 | ST(0) = vnumify(sv); |
13f8f398 JP |
392 | } else { |
393 | ST(0) = sv; | |
b38a9dc5 | 394 | } |
6d4a7be2 | 395 | |
396 | XSRETURN(1); | |
397 | } | |
398 | ||
439cb1c4 JP |
399 | XS(XS_version_new) |
400 | { | |
97aff369 | 401 | dVAR; |
439cb1c4 | 402 | dXSARGS; |
129318bd | 403 | if (items > 3) |
439cb1c4 JP |
404 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
405 | SP -= items; | |
406 | { | |
137d6fc0 JP |
407 | SV *vs = ST(1); |
408 | SV *rv; | |
c4420975 AL |
409 | const char * const classname = |
410 | sv_isobject(ST(0)) /* get the class if called as an object method */ | |
411 | ? HvNAME(SvSTASH(SvRV(ST(0)))) | |
412 | : (char *)SvPV_nolen(ST(0)); | |
9137345a JP |
413 | |
414 | if ( items == 1 ) { | |
415 | /* no parameter provided */ | |
416 | if ( sv_isobject(ST(0)) ) { | |
417 | /* copy existing object */ | |
418 | vs = ST(0); | |
419 | } | |
420 | else { | |
421 | /* create empty object */ | |
422 | vs = sv_newmortal(); | |
1946a074 | 423 | sv_setpvn(vs,"",0); |
9137345a JP |
424 | } |
425 | } | |
426 | else if ( items == 3 ) { | |
427 | vs = sv_newmortal(); | |
cfd0369c | 428 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd | 429 | } |
439cb1c4 | 430 | |
137d6fc0 | 431 | rv = new_version(vs); |
0723351e NC |
432 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
433 | sv_bless(rv, gv_stashpv(classname,TRUE)); | |
137d6fc0 JP |
434 | |
435 | PUSHs(sv_2mortal(rv)); | |
439cb1c4 JP |
436 | PUTBACK; |
437 | return; | |
438 | } | |
439 | } | |
440 | ||
441 | XS(XS_version_stringify) | |
442 | { | |
97aff369 | 443 | dVAR; |
41be1fbd JH |
444 | dXSARGS; |
445 | if (items < 1) | |
446 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
447 | SP -= items; | |
448 | { | |
7452cf6a | 449 | SV * lobj; |
41be1fbd JH |
450 | |
451 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 452 | lobj = SvRV(ST(0)); |
41be1fbd JH |
453 | } |
454 | else | |
455 | Perl_croak(aTHX_ "lobj is not of type version"); | |
456 | ||
137d6fc0 | 457 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd JH |
458 | |
459 | PUTBACK; | |
460 | return; | |
461 | } | |
439cb1c4 JP |
462 | } |
463 | ||
464 | XS(XS_version_numify) | |
465 | { | |
97aff369 | 466 | dVAR; |
41be1fbd JH |
467 | dXSARGS; |
468 | if (items < 1) | |
469 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
470 | SP -= items; | |
471 | { | |
7452cf6a | 472 | SV * lobj; |
41be1fbd JH |
473 | |
474 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 475 | lobj = SvRV(ST(0)); |
41be1fbd JH |
476 | } |
477 | else | |
478 | Perl_croak(aTHX_ "lobj is not of type version"); | |
479 | ||
137d6fc0 | 480 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd JH |
481 | |
482 | PUTBACK; | |
483 | return; | |
484 | } | |
439cb1c4 JP |
485 | } |
486 | ||
9137345a JP |
487 | XS(XS_version_normal) |
488 | { | |
97aff369 | 489 | dVAR; |
9137345a JP |
490 | dXSARGS; |
491 | if (items < 1) | |
492 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); | |
493 | SP -= items; | |
494 | { | |
7452cf6a | 495 | SV * lobj; |
9137345a JP |
496 | |
497 | if (sv_derived_from(ST(0), "version")) { | |
498 | lobj = SvRV(ST(0)); | |
499 | } | |
500 | else | |
501 | Perl_croak(aTHX_ "lobj is not of type version"); | |
502 | ||
503 | PUSHs(sv_2mortal(vnormal(lobj))); | |
504 | ||
505 | PUTBACK; | |
506 | return; | |
507 | } | |
508 | } | |
509 | ||
439cb1c4 JP |
510 | XS(XS_version_vcmp) |
511 | { | |
97aff369 | 512 | dVAR; |
41be1fbd JH |
513 | dXSARGS; |
514 | if (items < 1) | |
515 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
516 | SP -= items; | |
517 | { | |
7452cf6a | 518 | SV * lobj; |
41be1fbd JH |
519 | |
520 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 521 | lobj = SvRV(ST(0)); |
41be1fbd JH |
522 | } |
523 | else | |
524 | Perl_croak(aTHX_ "lobj is not of type version"); | |
525 | ||
526 | { | |
527 | SV *rs; | |
528 | SV *rvs; | |
529 | SV * robj = ST(1); | |
7452cf6a | 530 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd JH |
531 | |
532 | if ( ! sv_derived_from(robj, "version") ) | |
533 | { | |
534 | robj = new_version(robj); | |
535 | } | |
536 | rvs = SvRV(robj); | |
537 | ||
538 | if ( swap ) | |
539 | { | |
540 | rs = newSViv(vcmp(rvs,lobj)); | |
541 | } | |
542 | else | |
543 | { | |
544 | rs = newSViv(vcmp(lobj,rvs)); | |
545 | } | |
546 | ||
137d6fc0 | 547 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
548 | } |
549 | ||
550 | PUTBACK; | |
551 | return; | |
552 | } | |
439cb1c4 JP |
553 | } |
554 | ||
555 | XS(XS_version_boolean) | |
556 | { | |
97aff369 JH |
557 | dVAR; |
558 | dXSARGS; | |
559 | if (items < 1) | |
560 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
561 | SP -= items; | |
c4420975 AL |
562 | if (sv_derived_from(ST(0), "version")) { |
563 | SV * const lobj = SvRV(ST(0)); | |
396482e1 | 564 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
c4420975 AL |
565 | PUSHs(sv_2mortal(rs)); |
566 | PUTBACK; | |
567 | return; | |
568 | } | |
569 | else | |
570 | Perl_croak(aTHX_ "lobj is not of type version"); | |
439cb1c4 JP |
571 | } |
572 | ||
573 | XS(XS_version_noop) | |
574 | { | |
97aff369 | 575 | dVAR; |
2dfd8427 AL |
576 | dXSARGS; |
577 | if (items < 1) | |
578 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); | |
579 | if (sv_derived_from(ST(0), "version")) | |
580 | Perl_croak(aTHX_ "operation not supported with version object"); | |
581 | else | |
582 | Perl_croak(aTHX_ "lobj is not of type version"); | |
583 | #ifndef HASATTRIBUTE_NORETURN | |
584 | XSRETURN_EMPTY; | |
585 | #endif | |
439cb1c4 JP |
586 | } |
587 | ||
c8d69e4a JP |
588 | XS(XS_version_is_alpha) |
589 | { | |
97aff369 | 590 | dVAR; |
c8d69e4a JP |
591 | dXSARGS; |
592 | if (items != 1) | |
593 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); | |
594 | SP -= items; | |
c4420975 AL |
595 | if (sv_derived_from(ST(0), "version")) { |
596 | SV * const lobj = ST(0); | |
597 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) | |
598 | XSRETURN_YES; | |
599 | else | |
600 | XSRETURN_NO; | |
c8d69e4a JP |
601 | PUTBACK; |
602 | return; | |
603 | } | |
c4420975 AL |
604 | else |
605 | Perl_croak(aTHX_ "lobj is not of type version"); | |
c8d69e4a JP |
606 | } |
607 | ||
137d6fc0 JP |
608 | XS(XS_version_qv) |
609 | { | |
97aff369 | 610 | dVAR; |
137d6fc0 JP |
611 | dXSARGS; |
612 | if (items != 1) | |
613 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); | |
614 | SP -= items; | |
615 | { | |
616 | SV * ver = ST(0); | |
c4420975 AL |
617 | if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ |
618 | SV * const vs = sv_newmortal(); | |
137d6fc0 JP |
619 | char *version; |
620 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
621 | { | |
622 | char tbuf[64]; | |
86c11942 NC |
623 | const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
624 | version = savepvn(tbuf, len); | |
137d6fc0 JP |
625 | } |
626 | else | |
627 | { | |
2e0de35c | 628 | version = savesvpv(ver); |
137d6fc0 JP |
629 | } |
630 | (void)scan_version(version,vs,TRUE); | |
631 | Safefree(version); | |
632 | ||
633 | PUSHs(vs); | |
634 | } | |
635 | else | |
636 | { | |
637 | PUSHs(sv_2mortal(new_version(ver))); | |
638 | } | |
639 | ||
640 | PUTBACK; | |
641 | return; | |
642 | } | |
643 | } | |
644 | ||
8800c35a JH |
645 | XS(XS_utf8_is_utf8) |
646 | { | |
97aff369 | 647 | dVAR; |
41be1fbd JH |
648 | dXSARGS; |
649 | if (items != 1) | |
650 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
c4420975 AL |
651 | else { |
652 | const SV * const sv = ST(0); | |
653 | if (SvUTF8(sv)) | |
654 | XSRETURN_YES; | |
655 | else | |
656 | XSRETURN_NO; | |
41be1fbd JH |
657 | } |
658 | XSRETURN_EMPTY; | |
8800c35a JH |
659 | } |
660 | ||
1b026014 NIS |
661 | XS(XS_utf8_valid) |
662 | { | |
97aff369 | 663 | dVAR; |
41be1fbd JH |
664 | dXSARGS; |
665 | if (items != 1) | |
666 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
c4420975 AL |
667 | else { |
668 | SV * const sv = ST(0); | |
669 | STRLEN len; | |
670 | const char * const s = SvPV_const(sv,len); | |
671 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
672 | XSRETURN_YES; | |
673 | else | |
674 | XSRETURN_NO; | |
675 | } | |
41be1fbd | 676 | XSRETURN_EMPTY; |
1b026014 NIS |
677 | } |
678 | ||
679 | XS(XS_utf8_encode) | |
680 | { | |
97aff369 | 681 | dVAR; |
1b026014 NIS |
682 | dXSARGS; |
683 | if (items != 1) | |
684 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); | |
c4420975 | 685 | sv_utf8_encode(ST(0)); |
1b026014 NIS |
686 | XSRETURN_EMPTY; |
687 | } | |
688 | ||
689 | XS(XS_utf8_decode) | |
690 | { | |
97aff369 | 691 | dVAR; |
1b026014 NIS |
692 | dXSARGS; |
693 | if (items != 1) | |
694 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); | |
c4420975 AL |
695 | else { |
696 | SV * const sv = ST(0); | |
6867be6d | 697 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 NIS |
698 | ST(0) = boolSV(RETVAL); |
699 | sv_2mortal(ST(0)); | |
700 | } | |
701 | XSRETURN(1); | |
702 | } | |
703 | ||
704 | XS(XS_utf8_upgrade) | |
705 | { | |
97aff369 | 706 | dVAR; |
1b026014 NIS |
707 | dXSARGS; |
708 | if (items != 1) | |
709 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); | |
c4420975 AL |
710 | else { |
711 | SV * const sv = ST(0); | |
1b026014 NIS |
712 | STRLEN RETVAL; |
713 | dXSTARG; | |
714 | ||
715 | RETVAL = sv_utf8_upgrade(sv); | |
716 | XSprePUSH; PUSHi((IV)RETVAL); | |
717 | } | |
718 | XSRETURN(1); | |
719 | } | |
720 | ||
721 | XS(XS_utf8_downgrade) | |
722 | { | |
97aff369 | 723 | dVAR; |
1b026014 NIS |
724 | dXSARGS; |
725 | if (items < 1 || items > 2) | |
726 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); | |
c4420975 AL |
727 | else { |
728 | SV * const sv = ST(0); | |
6867be6d AL |
729 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
730 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 731 | |
1b026014 NIS |
732 | ST(0) = boolSV(RETVAL); |
733 | sv_2mortal(ST(0)); | |
734 | } | |
735 | XSRETURN(1); | |
736 | } | |
737 | ||
738 | XS(XS_utf8_native_to_unicode) | |
739 | { | |
97aff369 | 740 | dVAR; |
1b026014 | 741 | dXSARGS; |
6867be6d | 742 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
743 | |
744 | if (items > 1) | |
745 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
746 | ||
1b026014 NIS |
747 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
748 | XSRETURN(1); | |
749 | } | |
750 | ||
751 | XS(XS_utf8_unicode_to_native) | |
752 | { | |
97aff369 | 753 | dVAR; |
1b026014 | 754 | dXSARGS; |
6867be6d | 755 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
756 | |
757 | if (items > 1) | |
758 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
759 | ||
1b026014 NIS |
760 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
761 | XSRETURN(1); | |
762 | } | |
763 | ||
14a976d6 | 764 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 | 765 | { |
97aff369 | 766 | dVAR; |
29569577 | 767 | dXSARGS; |
c4420975 | 768 | SV * const sv = SvRV(ST(0)); |
6867be6d | 769 | |
29569577 JH |
770 | if (items == 1) { |
771 | if (SvREADONLY(sv)) | |
772 | XSRETURN_YES; | |
773 | else | |
774 | XSRETURN_NO; | |
775 | } | |
776 | else if (items == 2) { | |
777 | if (SvTRUE(ST(1))) { | |
778 | SvREADONLY_on(sv); | |
779 | XSRETURN_YES; | |
780 | } | |
781 | else { | |
14a976d6 | 782 | /* I hope you really know what you are doing. */ |
29569577 JH |
783 | SvREADONLY_off(sv); |
784 | XSRETURN_NO; | |
785 | } | |
786 | } | |
14a976d6 | 787 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
788 | } |
789 | ||
14a976d6 | 790 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 | 791 | { |
97aff369 | 792 | dVAR; |
29569577 | 793 | dXSARGS; |
c4420975 | 794 | SV * const sv = SvRV(ST(0)); |
6867be6d | 795 | |
29569577 | 796 | if (items == 1) |
14a976d6 | 797 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 | 798 | else if (items == 2) { |
14a976d6 | 799 | /* I hope you really know what you are doing. */ |
29569577 JH |
800 | SvREFCNT(sv) = SvIV(ST(1)); |
801 | XSRETURN_IV(SvREFCNT(sv)); | |
802 | } | |
14a976d6 | 803 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
804 | } |
805 | ||
f044d0d1 | 806 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f | 807 | { |
97aff369 | 808 | dVAR; |
dfd4ef2f | 809 | dXSARGS; |
6867be6d | 810 | |
3540d4ce AB |
811 | if (items != 1) |
812 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); | |
c4420975 AL |
813 | else { |
814 | HV * const hv = (HV *) SvRV(ST(0)); | |
815 | hv_clear_placeholders(hv); | |
816 | XSRETURN(0); | |
817 | } | |
dfd4ef2f | 818 | } |
39f7a870 | 819 | |
39cff0d9 AE |
820 | XS(XS_Regexp_DESTROY) |
821 | { | |
96a5add6 | 822 | PERL_UNUSED_CONTEXT; |
53c1dcc0 | 823 | PERL_UNUSED_ARG(cv); |
39cff0d9 AE |
824 | } |
825 | ||
39f7a870 JH |
826 | XS(XS_PerlIO_get_layers) |
827 | { | |
97aff369 | 828 | dVAR; |
39f7a870 JH |
829 | dXSARGS; |
830 | if (items < 1 || items % 2 == 0) | |
831 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); | |
5fef3b4a | 832 | #ifdef USE_PERLIO |
39f7a870 JH |
833 | { |
834 | SV * sv; | |
835 | GV * gv; | |
836 | IO * io; | |
837 | bool input = TRUE; | |
838 | bool details = FALSE; | |
839 | ||
840 | if (items > 1) { | |
c4420975 | 841 | SV * const *svp; |
39f7a870 | 842 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
843 | SV * const * const varp = svp; |
844 | SV * const * const valp = svp + 1; | |
39f7a870 | 845 | STRLEN klen; |
c4420975 | 846 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
847 | |
848 | switch (*key) { | |
849 | case 'i': | |
850 | if (klen == 5 && memEQ(key, "input", 5)) { | |
851 | input = SvTRUE(*valp); | |
852 | break; | |
853 | } | |
854 | goto fail; | |
855 | case 'o': | |
856 | if (klen == 6 && memEQ(key, "output", 6)) { | |
857 | input = !SvTRUE(*valp); | |
858 | break; | |
859 | } | |
860 | goto fail; | |
861 | case 'd': | |
862 | if (klen == 7 && memEQ(key, "details", 7)) { | |
863 | details = SvTRUE(*valp); | |
864 | break; | |
865 | } | |
866 | goto fail; | |
867 | default: | |
868 | fail: | |
869 | Perl_croak(aTHX_ | |
870 | "get_layers: unknown argument '%s'", | |
871 | key); | |
872 | } | |
873 | } | |
874 | ||
875 | SP -= (items - 1); | |
876 | } | |
877 | ||
878 | sv = POPs; | |
879 | gv = (GV*)sv; | |
880 | ||
881 | if (!isGV(sv)) { | |
882 | if (SvROK(sv) && isGV(SvRV(sv))) | |
883 | gv = (GV*)SvRV(sv); | |
671d49be | 884 | else if (SvPOKp(sv)) |
f776e3cd | 885 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
39f7a870 JH |
886 | } |
887 | ||
888 | if (gv && (io = GvIO(gv))) { | |
889 | dTARGET; | |
c4420975 | 890 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 JH |
891 | IoIFP(io) : IoOFP(io)); |
892 | I32 i; | |
c4420975 | 893 | const I32 last = av_len(av); |
39f7a870 JH |
894 | I32 nitem = 0; |
895 | ||
896 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
897 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
898 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
899 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 900 | |
c4420975 AL |
901 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
902 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
903 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 JH |
904 | |
905 | if (details) { | |
ec3bab8e NC |
906 | XPUSHs(namok |
907 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) | |
908 | : &PL_sv_undef); | |
909 | XPUSHs(argok | |
910 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) | |
911 | : &PL_sv_undef); | |
39f7a870 JH |
912 | if (flgok) |
913 | XPUSHi(SvIVX(*flgsvp)); | |
914 | else | |
915 | XPUSHs(&PL_sv_undef); | |
916 | nitem += 3; | |
917 | } | |
918 | else { | |
919 | if (namok && argok) | |
920 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", | |
921 | *namsvp, *argsvp)); | |
922 | else if (namok) | |
923 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); | |
924 | else | |
925 | XPUSHs(&PL_sv_undef); | |
926 | nitem++; | |
927 | if (flgok) { | |
c4420975 | 928 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
929 | |
930 | if (flags & PERLIO_F_UTF8) { | |
396482e1 | 931 | XPUSHs(newSVpvs("utf8")); |
39f7a870 JH |
932 | nitem++; |
933 | } | |
934 | } | |
935 | } | |
936 | } | |
937 | ||
938 | SvREFCNT_dec(av); | |
939 | ||
940 | XSRETURN(nitem); | |
941 | } | |
942 | } | |
5fef3b4a | 943 | #endif |
39f7a870 JH |
944 | |
945 | XSRETURN(0); | |
946 | } | |
947 | ||
9a7034eb | 948 | XS(XS_Internals_hash_seed) |
c910b28a | 949 | { |
97aff369 | 950 | dVAR; |
c85d3f85 NC |
951 | /* Using dXSARGS would also have dITEM and dSP, |
952 | * which define 2 unused local variables. */ | |
557b887a | 953 | dAXMARK; |
53c1dcc0 | 954 | PERL_UNUSED_ARG(cv); |
ad73156c | 955 | PERL_UNUSED_VAR(mark); |
81eaca17 | 956 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a JH |
957 | } |
958 | ||
008fb0c0 | 959 | XS(XS_Internals_rehash_seed) |
8e90d776 | 960 | { |
97aff369 | 961 | dVAR; |
8e90d776 NC |
962 | /* Using dXSARGS would also have dITEM and dSP, |
963 | * which define 2 unused local variables. */ | |
557b887a | 964 | dAXMARK; |
53c1dcc0 | 965 | PERL_UNUSED_ARG(cv); |
ad73156c | 966 | PERL_UNUSED_VAR(mark); |
008fb0c0 | 967 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 NC |
968 | } |
969 | ||
05619474 NC |
970 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
971 | { | |
97aff369 | 972 | dVAR; |
05619474 NC |
973 | dXSARGS; |
974 | if (SvROK(ST(0))) { | |
c4420975 | 975 | const HV * const hv = (HV *) SvRV(ST(0)); |
05619474 NC |
976 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
977 | if (HvREHASH(hv)) | |
978 | XSRETURN_YES; | |
979 | else | |
980 | XSRETURN_NO; | |
981 | } | |
982 | } | |
983 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); | |
984 | } | |
241d1a3b | 985 | |
e1234d8e NC |
986 | XS(XS_Internals_inc_sub_generation) |
987 | { | |
97aff369 | 988 | dVAR; |
e1234d8e NC |
989 | /* Using dXSARGS would also have dITEM and dSP, |
990 | * which define 2 unused local variables. */ | |
991 | dAXMARK; | |
992 | PERL_UNUSED_ARG(cv); | |
993 | PERL_UNUSED_VAR(mark); | |
994 | ++PL_sub_generation; | |
995 | XSRETURN_EMPTY; | |
996 | } | |
997 | ||
241d1a3b NC |
998 | /* |
999 | * Local variables: | |
1000 | * c-indentation-style: bsd | |
1001 | * c-basic-offset: 4 | |
1002 | * indent-tabs-mode: t | |
1003 | * End: | |
1004 | * | |
37442d52 RGS |
1005 | * ex: set ts=8 sts=4 sw=4 noet: |
1006 | */ |