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 | { |
38 | AV* av; | |
39 | GV* gv; | |
40 | GV** gvp; | |
5c284bb0 | 41 | HV* hv = NULL; |
c445ea15 | 42 | SV* subgen = NULL; |
bfcb3514 | 43 | const char *hvname; |
6d4a7be2 | 44 | |
301daebc MS |
45 | /* A stash/class can go by many names (ie. User == main::User), so |
46 | we compare the stash itself just in case */ | |
47 | if (name_stash && (stash == name_stash)) | |
48 | return &PL_sv_yes; | |
6d4a7be2 | 49 | |
bfcb3514 NC |
50 | hvname = HvNAME_get(stash); |
51 | ||
52 | if (strEQ(hvname, name)) | |
3280af22 | 53 | return &PL_sv_yes; |
6d4a7be2 | 54 | |
a1d407e8 DM |
55 | if (strEQ(name, "UNIVERSAL")) |
56 | return &PL_sv_yes; | |
57 | ||
6d4a7be2 | 58 | if (level > 100) |
46e4b22b | 59 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
bfcb3514 | 60 | hvname); |
6d4a7be2 | 61 | |
62 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE); | |
63 | ||
46e4b22b GS |
64 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv)) |
65 | && (hv = GvHV(gv))) | |
66 | { | |
eb160463 | 67 | if (SvIV(subgen) == (IV)PL_sub_generation) { |
46e4b22b | 68 | SV* sv; |
7452cf6a | 69 | SV** const svp = (SV**)hv_fetch(hv, name, len, FALSE); |
46e4b22b GS |
70 | if (svp && (sv = *svp) != (SV*)&PL_sv_undef) { |
71 | DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n", | |
bfcb3514 | 72 | name, hvname) ); |
46e4b22b GS |
73 | return sv; |
74 | } | |
75 | } | |
76 | else { | |
77 | DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", | |
bfcb3514 | 78 | hvname) ); |
46e4b22b GS |
79 | hv_clear(hv); |
80 | sv_setiv(subgen, PL_sub_generation); | |
81 | } | |
6d4a7be2 | 82 | } |
83 | ||
84 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); | |
46e4b22b | 85 | |
3280af22 | 86 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
46e4b22b | 87 | if (!hv || !subgen) { |
6d4a7be2 | 88 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE); |
89 | ||
90 | gv = *gvp; | |
91 | ||
92 | if (SvTYPE(gv) != SVt_PVGV) | |
93 | gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); | |
94 | ||
46e4b22b GS |
95 | if (!hv) |
96 | hv = GvHVn(gv); | |
97 | if (!subgen) { | |
98 | subgen = newSViv(PL_sub_generation); | |
99 | GvSV(gv) = subgen; | |
100 | } | |
6d4a7be2 | 101 | } |
46e4b22b | 102 | if (hv) { |
6d4a7be2 | 103 | SV** svp = AvARRAY(av); |
93965878 NIS |
104 | /* NOTE: No support for tied ISA */ |
105 | I32 items = AvFILLp(av) + 1; | |
6d4a7be2 | 106 | while (items--) { |
c4420975 AL |
107 | SV* const sv = *svp++; |
108 | HV* const basestash = gv_stashsv(sv, FALSE); | |
6d4a7be2 | 109 | if (!basestash) { |
599cee73 | 110 | if (ckWARN(WARN_MISC)) |
9014280d | 111 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bfcb3514 NC |
112 | "Can't locate package %"SVf" for @%s::ISA", |
113 | sv, hvname); | |
6d4a7be2 | 114 | continue; |
115 | } | |
301daebc MS |
116 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
117 | len, level + 1)) { | |
3280af22 NIS |
118 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
119 | return &PL_sv_yes; | |
6d4a7be2 | 120 | } |
121 | } | |
3280af22 | 122 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 | 123 | } |
124 | } | |
a1d407e8 | 125 | return &PL_sv_no; |
6d4a7be2 | 126 | } |
127 | ||
954c1994 | 128 | /* |
ccfc67b7 JH |
129 | =head1 SV Manipulation Functions |
130 | ||
954c1994 GS |
131 | =for apidoc sv_derived_from |
132 | ||
133 | Returns a boolean indicating whether the SV is derived from the specified | |
134 | class. This is the function that implements C<UNIVERSAL::isa>. It works | |
135 | for class names as well as for objects. | |
136 | ||
137 | =cut | |
138 | */ | |
139 | ||
55497cff | 140 | bool |
864dbfa3 | 141 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff | 142 | { |
0b6f4f5c | 143 | HV *stash; |
46e4b22b | 144 | |
5b295bef | 145 | SvGETMAGIC(sv); |
55497cff | 146 | |
147 | if (SvROK(sv)) { | |
0b6f4f5c | 148 | const char *type; |
55497cff | 149 | sv = SvRV(sv); |
150 | type = sv_reftype(sv,0); | |
0b6f4f5c AL |
151 | if (type && strEQ(type,name)) |
152 | return TRUE; | |
153 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; | |
55497cff | 154 | } |
155 | else { | |
156 | stash = gv_stashsv(sv, FALSE); | |
157 | } | |
46e4b22b | 158 | |
0b6f4f5c AL |
159 | if (stash) { |
160 | HV * const name_stash = gv_stashpv(name, FALSE); | |
161 | return isa_lookup(stash, name, name_stash, strlen(name), 0) == &PL_sv_yes; | |
162 | } | |
163 | else | |
164 | return FALSE; | |
301daebc | 165 | |
55497cff | 166 | } |
167 | ||
1b026014 NIS |
168 | #include "XSUB.h" |
169 | ||
27da23d5 JH |
170 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
171 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); | |
172 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); | |
439cb1c4 JP |
173 | XS(XS_version_new); |
174 | XS(XS_version_stringify); | |
175 | XS(XS_version_numify); | |
9137345a | 176 | XS(XS_version_normal); |
439cb1c4 JP |
177 | XS(XS_version_vcmp); |
178 | XS(XS_version_boolean); | |
2dfd8427 AL |
179 | #ifdef HASATTRIBUTE_NORETURN |
180 | XS(XS_version_noop) __attribute__noreturn__; | |
181 | #else | |
439cb1c4 | 182 | XS(XS_version_noop); |
2dfd8427 | 183 | #endif |
c8d69e4a | 184 | XS(XS_version_is_alpha); |
137d6fc0 | 185 | XS(XS_version_qv); |
8800c35a | 186 | XS(XS_utf8_is_utf8); |
1b026014 NIS |
187 | XS(XS_utf8_valid); |
188 | XS(XS_utf8_encode); | |
189 | XS(XS_utf8_decode); | |
190 | XS(XS_utf8_upgrade); | |
191 | XS(XS_utf8_downgrade); | |
192 | XS(XS_utf8_unicode_to_native); | |
193 | XS(XS_utf8_native_to_unicode); | |
29569577 JH |
194 | XS(XS_Internals_SvREADONLY); |
195 | XS(XS_Internals_SvREFCNT); | |
f044d0d1 | 196 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 | 197 | XS(XS_PerlIO_get_layers); |
39cff0d9 | 198 | XS(XS_Regexp_DESTROY); |
9a7034eb | 199 | XS(XS_Internals_hash_seed); |
008fb0c0 | 200 | XS(XS_Internals_rehash_seed); |
05619474 | 201 | XS(XS_Internals_HvREHASH); |
e1234d8e | 202 | XS(XS_Internals_inc_sub_generation); |
0cb96387 GS |
203 | |
204 | void | |
205 | Perl_boot_core_UNIVERSAL(pTHX) | |
206 | { | |
e1ec3a88 | 207 | const char file[] = __FILE__; |
0cb96387 GS |
208 | |
209 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); | |
210 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); | |
211 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); | |
439cb1c4 | 212 | { |
ad63d80f JP |
213 | /* register the overloading (type 'A') magic */ |
214 | PL_amagic_generation++; | |
439cb1c4 | 215 | /* Make it findable via fetchmethod */ |
be2ebcad | 216 | newXS("version::()", XS_version_noop, file); |
439cb1c4 JP |
217 | newXS("version::new", XS_version_new, file); |
218 | newXS("version::(\"\"", XS_version_stringify, file); | |
219 | newXS("version::stringify", XS_version_stringify, file); | |
220 | newXS("version::(0+", XS_version_numify, file); | |
221 | newXS("version::numify", XS_version_numify, file); | |
9137345a | 222 | newXS("version::normal", XS_version_normal, file); |
439cb1c4 JP |
223 | newXS("version::(cmp", XS_version_vcmp, file); |
224 | newXS("version::(<=>", XS_version_vcmp, file); | |
225 | newXS("version::vcmp", XS_version_vcmp, file); | |
226 | newXS("version::(bool", XS_version_boolean, file); | |
227 | newXS("version::boolean", XS_version_boolean, file); | |
228 | newXS("version::(nomethod", XS_version_noop, file); | |
229 | newXS("version::noop", XS_version_noop, file); | |
c8d69e4a | 230 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 | 231 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 | 232 | } |
8800c35a | 233 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 NIS |
234 | newXS("utf8::valid", XS_utf8_valid, file); |
235 | newXS("utf8::encode", XS_utf8_encode, file); | |
236 | newXS("utf8::decode", XS_utf8_decode, file); | |
237 | newXS("utf8::upgrade", XS_utf8_upgrade, file); | |
238 | newXS("utf8::downgrade", XS_utf8_downgrade, file); | |
239 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); | |
240 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); | |
29569577 JH |
241 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
242 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); | |
dfd4ef2f | 243 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 | 244 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce JH |
245 | newXSproto("PerlIO::get_layers", |
246 | XS_PerlIO_get_layers, file, "*;@"); | |
39cff0d9 | 247 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb | 248 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 | 249 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 | 250 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
e1234d8e NC |
251 | newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation, |
252 | file, ""); | |
0cb96387 GS |
253 | } |
254 | ||
55497cff | 255 | |
6d4a7be2 | 256 | XS(XS_UNIVERSAL_isa) |
257 | { | |
258 | dXSARGS; | |
6d4a7be2 | 259 | |
260 | if (items != 2) | |
cea2e8a9 | 261 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
c4420975 AL |
262 | else { |
263 | SV * const sv = ST(0); | |
264 | const char *name; | |
6d4a7be2 | 265 | |
c4420975 | 266 | SvGETMAGIC(sv); |
d3f7f2b2 | 267 | |
c4420975 AL |
268 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
269 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
270 | XSRETURN_UNDEF; | |
f8f70380 | 271 | |
c4420975 | 272 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 | 273 | |
c4420975 AL |
274 | ST(0) = boolSV(sv_derived_from(sv, name)); |
275 | XSRETURN(1); | |
276 | } | |
6d4a7be2 | 277 | } |
278 | ||
6d4a7be2 | 279 | XS(XS_UNIVERSAL_can) |
280 | { | |
281 | dXSARGS; | |
282 | SV *sv; | |
6867be6d | 283 | const char *name; |
6d4a7be2 | 284 | SV *rv; |
6f08146e | 285 | HV *pkg = NULL; |
6d4a7be2 | 286 | |
287 | if (items != 2) | |
cea2e8a9 | 288 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 | 289 | |
290 | sv = ST(0); | |
f8f70380 | 291 | |
5b295bef | 292 | SvGETMAGIC(sv); |
d3f7f2b2 | 293 | |
253ecd6d RGS |
294 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
295 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
296 | XSRETURN_UNDEF; |
297 | ||
0510663f | 298 | name = SvPV_nolen_const(ST(1)); |
3280af22 | 299 | rv = &PL_sv_undef; |
6d4a7be2 | 300 | |
46e4b22b | 301 | if (SvROK(sv)) { |
6f08146e | 302 | sv = (SV*)SvRV(sv); |
46e4b22b | 303 | if (SvOBJECT(sv)) |
6f08146e NIS |
304 | pkg = SvSTASH(sv); |
305 | } | |
306 | else { | |
307 | pkg = gv_stashsv(sv, FALSE); | |
308 | } | |
309 | ||
310 | if (pkg) { | |
c4420975 | 311 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
dc848c6f | 312 | if (gv && isGV(gv)) |
313 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); | |
6d4a7be2 | 314 | } |
315 | ||
316 | ST(0) = rv; | |
317 | XSRETURN(1); | |
318 | } | |
319 | ||
6d4a7be2 | 320 | XS(XS_UNIVERSAL_VERSION) |
321 | { | |
322 | dXSARGS; | |
323 | HV *pkg; | |
324 | GV **gvp; | |
325 | GV *gv; | |
326 | SV *sv; | |
e1ec3a88 | 327 | const char *undef; |
6d4a7be2 | 328 | |
1571675a | 329 | if (SvROK(ST(0))) { |
6d4a7be2 | 330 | sv = (SV*)SvRV(ST(0)); |
1571675a | 331 | if (!SvOBJECT(sv)) |
cea2e8a9 | 332 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 333 | pkg = SvSTASH(sv); |
334 | } | |
335 | else { | |
336 | pkg = gv_stashsv(ST(0), FALSE); | |
337 | } | |
338 | ||
339 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); | |
340 | ||
0008872a | 341 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
c4420975 | 342 | SV * const nsv = sv_newmortal(); |
6d4a7be2 | 343 | sv_setsv(nsv, sv); |
344 | sv = nsv; | |
137d6fc0 JP |
345 | if ( !sv_derived_from(sv, "version")) |
346 | upg_version(sv); | |
c445ea15 | 347 | undef = NULL; |
6d4a7be2 | 348 | } |
349 | else { | |
3280af22 | 350 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 | 351 | undef = "(undef)"; |
352 | } | |
353 | ||
1571675a | 354 | if (items > 1) { |
1571675a GS |
355 | SV *req = ST(1); |
356 | ||
62658f4d | 357 | if (undef) { |
bfcb3514 | 358 | if (pkg) { |
c4420975 | 359 | const char * const name = HvNAME_get(pkg); |
a3b680e6 | 360 | Perl_croak(aTHX_ |
bfcb3514 NC |
361 | "%s does not define $%s::VERSION--version check failed", |
362 | name, name); | |
363 | } else { | |
a3b680e6 AL |
364 | Perl_croak(aTHX_ |
365 | "%s defines neither package nor VERSION--version check failed", | |
0510663f | 366 | SvPVx_nolen_const(ST(0)) ); |
62658f4d PM |
367 | } |
368 | } | |
ad63d80f | 369 | |
137d6fc0 JP |
370 | if ( !sv_derived_from(req, "version")) { |
371 | /* req may very well be R/O, so create a new object */ | |
c4420975 | 372 | SV * const nsv = sv_newmortal(); |
137d6fc0 JP |
373 | sv_setsv(nsv, req); |
374 | req = nsv; | |
375 | upg_version(req); | |
376 | } | |
1571675a | 377 | |
137d6fc0 | 378 | if ( vcmp( req, sv ) > 0 ) |
b9381830 | 379 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
bfcb3514 | 380 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
b9381830 | 381 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d | 382 | } |
6d4a7be2 | 383 | |
2b140d5b | 384 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 | 385 | ST(0) = vnumify(sv); |
13f8f398 JP |
386 | } else { |
387 | ST(0) = sv; | |
b38a9dc5 | 388 | } |
6d4a7be2 | 389 | |
390 | XSRETURN(1); | |
391 | } | |
392 | ||
439cb1c4 JP |
393 | XS(XS_version_new) |
394 | { | |
395 | dXSARGS; | |
129318bd | 396 | if (items > 3) |
439cb1c4 JP |
397 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
398 | SP -= items; | |
399 | { | |
137d6fc0 JP |
400 | SV *vs = ST(1); |
401 | SV *rv; | |
c4420975 AL |
402 | const char * const classname = |
403 | sv_isobject(ST(0)) /* get the class if called as an object method */ | |
404 | ? HvNAME(SvSTASH(SvRV(ST(0)))) | |
405 | : (char *)SvPV_nolen(ST(0)); | |
9137345a JP |
406 | |
407 | if ( items == 1 ) { | |
408 | /* no parameter provided */ | |
409 | if ( sv_isobject(ST(0)) ) { | |
410 | /* copy existing object */ | |
411 | vs = ST(0); | |
412 | } | |
413 | else { | |
414 | /* create empty object */ | |
415 | vs = sv_newmortal(); | |
1946a074 | 416 | sv_setpvn(vs,"",0); |
9137345a JP |
417 | } |
418 | } | |
419 | else if ( items == 3 ) { | |
420 | vs = sv_newmortal(); | |
cfd0369c | 421 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd | 422 | } |
439cb1c4 | 423 | |
137d6fc0 | 424 | rv = new_version(vs); |
0723351e NC |
425 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
426 | sv_bless(rv, gv_stashpv(classname,TRUE)); | |
137d6fc0 JP |
427 | |
428 | PUSHs(sv_2mortal(rv)); | |
439cb1c4 JP |
429 | PUTBACK; |
430 | return; | |
431 | } | |
432 | } | |
433 | ||
434 | XS(XS_version_stringify) | |
435 | { | |
41be1fbd JH |
436 | dXSARGS; |
437 | if (items < 1) | |
438 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
439 | SP -= items; | |
440 | { | |
7452cf6a | 441 | SV * lobj; |
41be1fbd JH |
442 | |
443 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 444 | lobj = SvRV(ST(0)); |
41be1fbd JH |
445 | } |
446 | else | |
447 | Perl_croak(aTHX_ "lobj is not of type version"); | |
448 | ||
137d6fc0 | 449 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd JH |
450 | |
451 | PUTBACK; | |
452 | return; | |
453 | } | |
439cb1c4 JP |
454 | } |
455 | ||
456 | XS(XS_version_numify) | |
457 | { | |
41be1fbd JH |
458 | dXSARGS; |
459 | if (items < 1) | |
460 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
461 | SP -= items; | |
462 | { | |
7452cf6a | 463 | SV * lobj; |
41be1fbd JH |
464 | |
465 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 466 | lobj = SvRV(ST(0)); |
41be1fbd JH |
467 | } |
468 | else | |
469 | Perl_croak(aTHX_ "lobj is not of type version"); | |
470 | ||
137d6fc0 | 471 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd JH |
472 | |
473 | PUTBACK; | |
474 | return; | |
475 | } | |
439cb1c4 JP |
476 | } |
477 | ||
9137345a JP |
478 | XS(XS_version_normal) |
479 | { | |
480 | dXSARGS; | |
481 | if (items < 1) | |
482 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); | |
483 | SP -= items; | |
484 | { | |
7452cf6a | 485 | SV * lobj; |
9137345a JP |
486 | |
487 | if (sv_derived_from(ST(0), "version")) { | |
488 | lobj = SvRV(ST(0)); | |
489 | } | |
490 | else | |
491 | Perl_croak(aTHX_ "lobj is not of type version"); | |
492 | ||
493 | PUSHs(sv_2mortal(vnormal(lobj))); | |
494 | ||
495 | PUTBACK; | |
496 | return; | |
497 | } | |
498 | } | |
499 | ||
439cb1c4 JP |
500 | XS(XS_version_vcmp) |
501 | { | |
41be1fbd JH |
502 | dXSARGS; |
503 | if (items < 1) | |
504 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
505 | SP -= items; | |
506 | { | |
7452cf6a | 507 | SV * lobj; |
41be1fbd JH |
508 | |
509 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 510 | lobj = SvRV(ST(0)); |
41be1fbd JH |
511 | } |
512 | else | |
513 | Perl_croak(aTHX_ "lobj is not of type version"); | |
514 | ||
515 | { | |
516 | SV *rs; | |
517 | SV *rvs; | |
518 | SV * robj = ST(1); | |
7452cf6a | 519 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd JH |
520 | |
521 | if ( ! sv_derived_from(robj, "version") ) | |
522 | { | |
523 | robj = new_version(robj); | |
524 | } | |
525 | rvs = SvRV(robj); | |
526 | ||
527 | if ( swap ) | |
528 | { | |
529 | rs = newSViv(vcmp(rvs,lobj)); | |
530 | } | |
531 | else | |
532 | { | |
533 | rs = newSViv(vcmp(lobj,rvs)); | |
534 | } | |
535 | ||
137d6fc0 | 536 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
537 | } |
538 | ||
539 | PUTBACK; | |
540 | return; | |
541 | } | |
439cb1c4 JP |
542 | } |
543 | ||
544 | XS(XS_version_boolean) | |
545 | { | |
41be1fbd JH |
546 | dXSARGS; |
547 | if (items < 1) | |
548 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
549 | SP -= items; | |
c4420975 AL |
550 | if (sv_derived_from(ST(0), "version")) { |
551 | SV * const lobj = SvRV(ST(0)); | |
396482e1 | 552 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
c4420975 AL |
553 | PUSHs(sv_2mortal(rs)); |
554 | PUTBACK; | |
555 | return; | |
556 | } | |
557 | else | |
558 | Perl_croak(aTHX_ "lobj is not of type version"); | |
439cb1c4 JP |
559 | } |
560 | ||
561 | XS(XS_version_noop) | |
562 | { | |
2dfd8427 AL |
563 | dXSARGS; |
564 | if (items < 1) | |
565 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); | |
566 | if (sv_derived_from(ST(0), "version")) | |
567 | Perl_croak(aTHX_ "operation not supported with version object"); | |
568 | else | |
569 | Perl_croak(aTHX_ "lobj is not of type version"); | |
570 | #ifndef HASATTRIBUTE_NORETURN | |
571 | XSRETURN_EMPTY; | |
572 | #endif | |
439cb1c4 JP |
573 | } |
574 | ||
c8d69e4a JP |
575 | XS(XS_version_is_alpha) |
576 | { | |
577 | dXSARGS; | |
578 | if (items != 1) | |
579 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); | |
580 | SP -= items; | |
c4420975 AL |
581 | if (sv_derived_from(ST(0), "version")) { |
582 | SV * const lobj = ST(0); | |
583 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) | |
584 | XSRETURN_YES; | |
585 | else | |
586 | XSRETURN_NO; | |
c8d69e4a JP |
587 | PUTBACK; |
588 | return; | |
589 | } | |
c4420975 AL |
590 | else |
591 | Perl_croak(aTHX_ "lobj is not of type version"); | |
c8d69e4a JP |
592 | } |
593 | ||
137d6fc0 JP |
594 | XS(XS_version_qv) |
595 | { | |
596 | dXSARGS; | |
597 | if (items != 1) | |
598 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); | |
599 | SP -= items; | |
600 | { | |
601 | SV * ver = ST(0); | |
c4420975 AL |
602 | if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ |
603 | SV * const vs = sv_newmortal(); | |
137d6fc0 JP |
604 | char *version; |
605 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
606 | { | |
607 | char tbuf[64]; | |
86c11942 NC |
608 | const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
609 | version = savepvn(tbuf, len); | |
137d6fc0 JP |
610 | } |
611 | else | |
612 | { | |
2e0de35c | 613 | version = savesvpv(ver); |
137d6fc0 JP |
614 | } |
615 | (void)scan_version(version,vs,TRUE); | |
616 | Safefree(version); | |
617 | ||
618 | PUSHs(vs); | |
619 | } | |
620 | else | |
621 | { | |
622 | PUSHs(sv_2mortal(new_version(ver))); | |
623 | } | |
624 | ||
625 | PUTBACK; | |
626 | return; | |
627 | } | |
628 | } | |
629 | ||
8800c35a JH |
630 | XS(XS_utf8_is_utf8) |
631 | { | |
41be1fbd JH |
632 | dXSARGS; |
633 | if (items != 1) | |
634 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
c4420975 AL |
635 | else { |
636 | const SV * const sv = ST(0); | |
637 | if (SvUTF8(sv)) | |
638 | XSRETURN_YES; | |
639 | else | |
640 | XSRETURN_NO; | |
41be1fbd JH |
641 | } |
642 | XSRETURN_EMPTY; | |
8800c35a JH |
643 | } |
644 | ||
1b026014 NIS |
645 | XS(XS_utf8_valid) |
646 | { | |
41be1fbd JH |
647 | dXSARGS; |
648 | if (items != 1) | |
649 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
c4420975 AL |
650 | else { |
651 | SV * const sv = ST(0); | |
652 | STRLEN len; | |
653 | const char * const s = SvPV_const(sv,len); | |
654 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
655 | XSRETURN_YES; | |
656 | else | |
657 | XSRETURN_NO; | |
658 | } | |
41be1fbd | 659 | XSRETURN_EMPTY; |
1b026014 NIS |
660 | } |
661 | ||
662 | XS(XS_utf8_encode) | |
663 | { | |
664 | dXSARGS; | |
665 | if (items != 1) | |
666 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); | |
c4420975 | 667 | sv_utf8_encode(ST(0)); |
1b026014 NIS |
668 | XSRETURN_EMPTY; |
669 | } | |
670 | ||
671 | XS(XS_utf8_decode) | |
672 | { | |
673 | dXSARGS; | |
674 | if (items != 1) | |
675 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); | |
c4420975 AL |
676 | else { |
677 | SV * const sv = ST(0); | |
6867be6d | 678 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 NIS |
679 | ST(0) = boolSV(RETVAL); |
680 | sv_2mortal(ST(0)); | |
681 | } | |
682 | XSRETURN(1); | |
683 | } | |
684 | ||
685 | XS(XS_utf8_upgrade) | |
686 | { | |
687 | dXSARGS; | |
688 | if (items != 1) | |
689 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); | |
c4420975 AL |
690 | else { |
691 | SV * const sv = ST(0); | |
1b026014 NIS |
692 | STRLEN RETVAL; |
693 | dXSTARG; | |
694 | ||
695 | RETVAL = sv_utf8_upgrade(sv); | |
696 | XSprePUSH; PUSHi((IV)RETVAL); | |
697 | } | |
698 | XSRETURN(1); | |
699 | } | |
700 | ||
701 | XS(XS_utf8_downgrade) | |
702 | { | |
703 | dXSARGS; | |
704 | if (items < 1 || items > 2) | |
705 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); | |
c4420975 AL |
706 | else { |
707 | SV * const sv = ST(0); | |
6867be6d AL |
708 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
709 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 710 | |
1b026014 NIS |
711 | ST(0) = boolSV(RETVAL); |
712 | sv_2mortal(ST(0)); | |
713 | } | |
714 | XSRETURN(1); | |
715 | } | |
716 | ||
717 | XS(XS_utf8_native_to_unicode) | |
718 | { | |
719 | dXSARGS; | |
6867be6d | 720 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
721 | |
722 | if (items > 1) | |
723 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
724 | ||
1b026014 NIS |
725 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
726 | XSRETURN(1); | |
727 | } | |
728 | ||
729 | XS(XS_utf8_unicode_to_native) | |
730 | { | |
731 | dXSARGS; | |
6867be6d | 732 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
733 | |
734 | if (items > 1) | |
735 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
736 | ||
1b026014 NIS |
737 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
738 | XSRETURN(1); | |
739 | } | |
740 | ||
14a976d6 | 741 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 JH |
742 | { |
743 | dXSARGS; | |
c4420975 | 744 | SV * const sv = SvRV(ST(0)); |
6867be6d | 745 | |
29569577 JH |
746 | if (items == 1) { |
747 | if (SvREADONLY(sv)) | |
748 | XSRETURN_YES; | |
749 | else | |
750 | XSRETURN_NO; | |
751 | } | |
752 | else if (items == 2) { | |
753 | if (SvTRUE(ST(1))) { | |
754 | SvREADONLY_on(sv); | |
755 | XSRETURN_YES; | |
756 | } | |
757 | else { | |
14a976d6 | 758 | /* I hope you really know what you are doing. */ |
29569577 JH |
759 | SvREADONLY_off(sv); |
760 | XSRETURN_NO; | |
761 | } | |
762 | } | |
14a976d6 | 763 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
764 | } |
765 | ||
14a976d6 | 766 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 JH |
767 | { |
768 | dXSARGS; | |
c4420975 | 769 | SV * const sv = SvRV(ST(0)); |
6867be6d | 770 | |
29569577 | 771 | if (items == 1) |
14a976d6 | 772 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 | 773 | else if (items == 2) { |
14a976d6 | 774 | /* I hope you really know what you are doing. */ |
29569577 JH |
775 | SvREFCNT(sv) = SvIV(ST(1)); |
776 | XSRETURN_IV(SvREFCNT(sv)); | |
777 | } | |
14a976d6 | 778 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
779 | } |
780 | ||
f044d0d1 | 781 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f NC |
782 | { |
783 | dXSARGS; | |
6867be6d | 784 | |
3540d4ce AB |
785 | if (items != 1) |
786 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); | |
c4420975 AL |
787 | else { |
788 | HV * const hv = (HV *) SvRV(ST(0)); | |
789 | hv_clear_placeholders(hv); | |
790 | XSRETURN(0); | |
791 | } | |
dfd4ef2f | 792 | } |
39f7a870 | 793 | |
39cff0d9 AE |
794 | XS(XS_Regexp_DESTROY) |
795 | { | |
53c1dcc0 | 796 | PERL_UNUSED_ARG(cv); |
39cff0d9 AE |
797 | } |
798 | ||
39f7a870 JH |
799 | XS(XS_PerlIO_get_layers) |
800 | { | |
801 | dXSARGS; | |
802 | if (items < 1 || items % 2 == 0) | |
803 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); | |
5fef3b4a | 804 | #ifdef USE_PERLIO |
39f7a870 JH |
805 | { |
806 | SV * sv; | |
807 | GV * gv; | |
808 | IO * io; | |
809 | bool input = TRUE; | |
810 | bool details = FALSE; | |
811 | ||
812 | if (items > 1) { | |
c4420975 | 813 | SV * const *svp; |
39f7a870 | 814 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 AL |
815 | SV * const * const varp = svp; |
816 | SV * const * const valp = svp + 1; | |
39f7a870 | 817 | STRLEN klen; |
c4420975 | 818 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 JH |
819 | |
820 | switch (*key) { | |
821 | case 'i': | |
822 | if (klen == 5 && memEQ(key, "input", 5)) { | |
823 | input = SvTRUE(*valp); | |
824 | break; | |
825 | } | |
826 | goto fail; | |
827 | case 'o': | |
828 | if (klen == 6 && memEQ(key, "output", 6)) { | |
829 | input = !SvTRUE(*valp); | |
830 | break; | |
831 | } | |
832 | goto fail; | |
833 | case 'd': | |
834 | if (klen == 7 && memEQ(key, "details", 7)) { | |
835 | details = SvTRUE(*valp); | |
836 | break; | |
837 | } | |
838 | goto fail; | |
839 | default: | |
840 | fail: | |
841 | Perl_croak(aTHX_ | |
842 | "get_layers: unknown argument '%s'", | |
843 | key); | |
844 | } | |
845 | } | |
846 | ||
847 | SP -= (items - 1); | |
848 | } | |
849 | ||
850 | sv = POPs; | |
851 | gv = (GV*)sv; | |
852 | ||
853 | if (!isGV(sv)) { | |
854 | if (SvROK(sv) && isGV(SvRV(sv))) | |
855 | gv = (GV*)SvRV(sv); | |
671d49be | 856 | else if (SvPOKp(sv)) |
f776e3cd | 857 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
39f7a870 JH |
858 | } |
859 | ||
860 | if (gv && (io = GvIO(gv))) { | |
861 | dTARGET; | |
c4420975 | 862 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 JH |
863 | IoIFP(io) : IoOFP(io)); |
864 | I32 i; | |
c4420975 | 865 | const I32 last = av_len(av); |
39f7a870 JH |
866 | I32 nitem = 0; |
867 | ||
868 | for (i = last; i >= 0; i -= 3) { | |
c4420975 AL |
869 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
870 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); | |
871 | SV * const * const flgsvp = av_fetch(av, i, FALSE); | |
39f7a870 | 872 | |
c4420975 AL |
873 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
874 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); | |
875 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
39f7a870 JH |
876 | |
877 | if (details) { | |
ec3bab8e NC |
878 | XPUSHs(namok |
879 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) | |
880 | : &PL_sv_undef); | |
881 | XPUSHs(argok | |
882 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) | |
883 | : &PL_sv_undef); | |
39f7a870 JH |
884 | if (flgok) |
885 | XPUSHi(SvIVX(*flgsvp)); | |
886 | else | |
887 | XPUSHs(&PL_sv_undef); | |
888 | nitem += 3; | |
889 | } | |
890 | else { | |
891 | if (namok && argok) | |
892 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", | |
893 | *namsvp, *argsvp)); | |
894 | else if (namok) | |
895 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); | |
896 | else | |
897 | XPUSHs(&PL_sv_undef); | |
898 | nitem++; | |
899 | if (flgok) { | |
c4420975 | 900 | const IV flags = SvIVX(*flgsvp); |
39f7a870 JH |
901 | |
902 | if (flags & PERLIO_F_UTF8) { | |
396482e1 | 903 | XPUSHs(newSVpvs("utf8")); |
39f7a870 JH |
904 | nitem++; |
905 | } | |
906 | } | |
907 | } | |
908 | } | |
909 | ||
910 | SvREFCNT_dec(av); | |
911 | ||
912 | XSRETURN(nitem); | |
913 | } | |
914 | } | |
5fef3b4a | 915 | #endif |
39f7a870 JH |
916 | |
917 | XSRETURN(0); | |
918 | } | |
919 | ||
9a7034eb | 920 | XS(XS_Internals_hash_seed) |
c910b28a | 921 | { |
c85d3f85 NC |
922 | /* Using dXSARGS would also have dITEM and dSP, |
923 | * which define 2 unused local variables. */ | |
557b887a | 924 | dAXMARK; |
53c1dcc0 | 925 | PERL_UNUSED_ARG(cv); |
ad73156c | 926 | PERL_UNUSED_VAR(mark); |
81eaca17 | 927 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a JH |
928 | } |
929 | ||
008fb0c0 | 930 | XS(XS_Internals_rehash_seed) |
8e90d776 NC |
931 | { |
932 | /* Using dXSARGS would also have dITEM and dSP, | |
933 | * which define 2 unused local variables. */ | |
557b887a | 934 | dAXMARK; |
53c1dcc0 | 935 | PERL_UNUSED_ARG(cv); |
ad73156c | 936 | PERL_UNUSED_VAR(mark); |
008fb0c0 | 937 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 NC |
938 | } |
939 | ||
05619474 NC |
940 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
941 | { | |
942 | dXSARGS; | |
943 | if (SvROK(ST(0))) { | |
c4420975 | 944 | const HV * const hv = (HV *) SvRV(ST(0)); |
05619474 NC |
945 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
946 | if (HvREHASH(hv)) | |
947 | XSRETURN_YES; | |
948 | else | |
949 | XSRETURN_NO; | |
950 | } | |
951 | } | |
952 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); | |
953 | } | |
241d1a3b | 954 | |
e1234d8e NC |
955 | XS(XS_Internals_inc_sub_generation) |
956 | { | |
957 | /* Using dXSARGS would also have dITEM and dSP, | |
958 | * which define 2 unused local variables. */ | |
959 | dAXMARK; | |
960 | PERL_UNUSED_ARG(cv); | |
961 | PERL_UNUSED_VAR(mark); | |
962 | ++PL_sub_generation; | |
963 | XSRETURN_EMPTY; | |
964 | } | |
965 | ||
241d1a3b NC |
966 | /* |
967 | * Local variables: | |
968 | * c-indentation-style: bsd | |
969 | * c-basic-offset: 4 | |
970 | * indent-tabs-mode: t | |
971 | * End: | |
972 | * | |
37442d52 RGS |
973 | * ex: set ts=8 sts=4 sw=4 noet: |
974 | */ |