Commit | Line | Data |
---|---|---|
d6376244 JH |
1 | /* universal.c |
2 | * | |
b5f8cc5c | 3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
241d1a3b | 4 | * 2005, 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; | |
41 | HV* hv = Nullhv; | |
46e4b22b | 42 | SV* subgen = Nullsv; |
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 GS |
68 | SV* sv; |
69 | SV** svp = (SV**)hv_fetch(hv, name, len, FALSE); | |
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--) { |
107 | SV* sv = *svp++; | |
108 | HV* basestash = gv_stashsv(sv, FALSE); | |
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 | { |
a3b680e6 AL |
143 | const char *type = Nullch; |
144 | HV *stash = Nullhv; | |
301daebc | 145 | HV *name_stash; |
46e4b22b | 146 | |
5b295bef | 147 | SvGETMAGIC(sv); |
55497cff | 148 | |
149 | if (SvROK(sv)) { | |
150 | sv = SvRV(sv); | |
151 | type = sv_reftype(sv,0); | |
46e4b22b | 152 | if (SvOBJECT(sv)) |
55497cff | 153 | stash = SvSTASH(sv); |
154 | } | |
155 | else { | |
156 | stash = gv_stashsv(sv, FALSE); | |
157 | } | |
46e4b22b | 158 | |
301daebc MS |
159 | name_stash = gv_stashpv(name, FALSE); |
160 | ||
55497cff | 161 | return (type && strEQ(type,name)) || |
301daebc MS |
162 | (stash && isa_lookup(stash, name, name_stash, strlen(name), 0) |
163 | == &PL_sv_yes) | |
55497cff | 164 | ? TRUE |
165 | : FALSE ; | |
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); |
0cb96387 GS |
202 | |
203 | void | |
204 | Perl_boot_core_UNIVERSAL(pTHX) | |
205 | { | |
e1ec3a88 | 206 | const char file[] = __FILE__; |
0cb96387 GS |
207 | |
208 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); | |
209 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); | |
210 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); | |
439cb1c4 | 211 | { |
ad63d80f JP |
212 | /* register the overloading (type 'A') magic */ |
213 | PL_amagic_generation++; | |
439cb1c4 | 214 | /* Make it findable via fetchmethod */ |
be2ebcad | 215 | newXS("version::()", XS_version_noop, file); |
439cb1c4 JP |
216 | newXS("version::new", XS_version_new, file); |
217 | newXS("version::(\"\"", XS_version_stringify, file); | |
218 | newXS("version::stringify", XS_version_stringify, file); | |
219 | newXS("version::(0+", XS_version_numify, file); | |
220 | newXS("version::numify", XS_version_numify, file); | |
9137345a | 221 | newXS("version::normal", XS_version_normal, file); |
439cb1c4 JP |
222 | newXS("version::(cmp", XS_version_vcmp, file); |
223 | newXS("version::(<=>", XS_version_vcmp, file); | |
224 | newXS("version::vcmp", XS_version_vcmp, file); | |
225 | newXS("version::(bool", XS_version_boolean, file); | |
226 | newXS("version::boolean", XS_version_boolean, file); | |
227 | newXS("version::(nomethod", XS_version_noop, file); | |
228 | newXS("version::noop", XS_version_noop, file); | |
c8d69e4a | 229 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 | 230 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 | 231 | } |
8800c35a | 232 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 NIS |
233 | newXS("utf8::valid", XS_utf8_valid, file); |
234 | newXS("utf8::encode", XS_utf8_encode, file); | |
235 | newXS("utf8::decode", XS_utf8_decode, file); | |
236 | newXS("utf8::upgrade", XS_utf8_upgrade, file); | |
237 | newXS("utf8::downgrade", XS_utf8_downgrade, file); | |
238 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); | |
239 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); | |
29569577 JH |
240 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
241 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); | |
dfd4ef2f | 242 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 | 243 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce JH |
244 | newXSproto("PerlIO::get_layers", |
245 | XS_PerlIO_get_layers, file, "*;@"); | |
39cff0d9 | 246 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb | 247 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 | 248 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 | 249 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 GS |
250 | } |
251 | ||
55497cff | 252 | |
6d4a7be2 | 253 | XS(XS_UNIVERSAL_isa) |
254 | { | |
255 | dXSARGS; | |
55497cff | 256 | SV *sv; |
6867be6d | 257 | const char *name; |
6d4a7be2 | 258 | |
259 | if (items != 2) | |
cea2e8a9 | 260 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 | 261 | |
262 | sv = ST(0); | |
f8f70380 | 263 | |
5b295bef | 264 | SvGETMAGIC(sv); |
d3f7f2b2 | 265 | |
253ecd6d RGS |
266 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
267 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
268 | XSRETURN_UNDEF; |
269 | ||
0510663f | 270 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 | 271 | |
54310121 | 272 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 | 273 | XSRETURN(1); |
274 | } | |
275 | ||
6d4a7be2 | 276 | XS(XS_UNIVERSAL_can) |
277 | { | |
278 | dXSARGS; | |
279 | SV *sv; | |
6867be6d | 280 | const char *name; |
6d4a7be2 | 281 | SV *rv; |
6f08146e | 282 | HV *pkg = NULL; |
6d4a7be2 | 283 | |
284 | if (items != 2) | |
cea2e8a9 | 285 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 | 286 | |
287 | sv = ST(0); | |
f8f70380 | 288 | |
5b295bef | 289 | SvGETMAGIC(sv); |
d3f7f2b2 | 290 | |
253ecd6d RGS |
291 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
292 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
293 | XSRETURN_UNDEF; |
294 | ||
0510663f | 295 | name = SvPV_nolen_const(ST(1)); |
3280af22 | 296 | rv = &PL_sv_undef; |
6d4a7be2 | 297 | |
46e4b22b | 298 | if (SvROK(sv)) { |
6f08146e | 299 | sv = (SV*)SvRV(sv); |
46e4b22b | 300 | if (SvOBJECT(sv)) |
6f08146e NIS |
301 | pkg = SvSTASH(sv); |
302 | } | |
303 | else { | |
304 | pkg = gv_stashsv(sv, FALSE); | |
305 | } | |
306 | ||
307 | if (pkg) { | |
dc848c6f | 308 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
309 | if (gv && isGV(gv)) | |
310 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); | |
6d4a7be2 | 311 | } |
312 | ||
313 | ST(0) = rv; | |
314 | XSRETURN(1); | |
315 | } | |
316 | ||
6d4a7be2 | 317 | XS(XS_UNIVERSAL_VERSION) |
318 | { | |
319 | dXSARGS; | |
320 | HV *pkg; | |
321 | GV **gvp; | |
322 | GV *gv; | |
323 | SV *sv; | |
e1ec3a88 | 324 | const char *undef; |
6d4a7be2 | 325 | |
1571675a | 326 | if (SvROK(ST(0))) { |
6d4a7be2 | 327 | sv = (SV*)SvRV(ST(0)); |
1571675a | 328 | if (!SvOBJECT(sv)) |
cea2e8a9 | 329 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 330 | pkg = SvSTASH(sv); |
331 | } | |
332 | else { | |
333 | pkg = gv_stashsv(ST(0), FALSE); | |
334 | } | |
335 | ||
336 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); | |
337 | ||
0008872a | 338 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
6d4a7be2 | 339 | SV *nsv = sv_newmortal(); |
340 | sv_setsv(nsv, sv); | |
341 | sv = nsv; | |
137d6fc0 JP |
342 | if ( !sv_derived_from(sv, "version")) |
343 | upg_version(sv); | |
6d4a7be2 | 344 | undef = Nullch; |
345 | } | |
346 | else { | |
3280af22 | 347 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 | 348 | undef = "(undef)"; |
349 | } | |
350 | ||
1571675a | 351 | if (items > 1) { |
1571675a GS |
352 | SV *req = ST(1); |
353 | ||
62658f4d | 354 | if (undef) { |
bfcb3514 NC |
355 | if (pkg) { |
356 | const char *name = HvNAME_get(pkg); | |
a3b680e6 | 357 | Perl_croak(aTHX_ |
bfcb3514 NC |
358 | "%s does not define $%s::VERSION--version check failed", |
359 | name, name); | |
360 | } else { | |
a3b680e6 AL |
361 | Perl_croak(aTHX_ |
362 | "%s defines neither package nor VERSION--version check failed", | |
0510663f | 363 | SvPVx_nolen_const(ST(0)) ); |
62658f4d PM |
364 | } |
365 | } | |
ad63d80f | 366 | |
137d6fc0 JP |
367 | if ( !sv_derived_from(req, "version")) { |
368 | /* req may very well be R/O, so create a new object */ | |
369 | SV *nsv = sv_newmortal(); | |
370 | sv_setsv(nsv, req); | |
371 | req = nsv; | |
372 | upg_version(req); | |
373 | } | |
1571675a | 374 | |
137d6fc0 | 375 | if ( vcmp( req, sv ) > 0 ) |
b9381830 | 376 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
bfcb3514 | 377 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
b9381830 | 378 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d | 379 | } |
6d4a7be2 | 380 | |
2b140d5b | 381 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 | 382 | ST(0) = vnumify(sv); |
13f8f398 JP |
383 | } else { |
384 | ST(0) = sv; | |
b38a9dc5 | 385 | } |
6d4a7be2 | 386 | |
387 | XSRETURN(1); | |
388 | } | |
389 | ||
439cb1c4 JP |
390 | XS(XS_version_new) |
391 | { | |
392 | dXSARGS; | |
129318bd | 393 | if (items > 3) |
439cb1c4 JP |
394 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
395 | SP -= items; | |
396 | { | |
137d6fc0 JP |
397 | SV *vs = ST(1); |
398 | SV *rv; | |
9137345a JP |
399 | const char *classname; |
400 | ||
401 | /* get the class if called as an object method */ | |
402 | if ( sv_isobject(ST(0)) ) { | |
403 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); | |
404 | } | |
405 | else { | |
406 | classname = (char *)SvPV_nolen(ST(0)); | |
407 | } | |
408 | ||
409 | if ( items == 1 ) { | |
410 | /* no parameter provided */ | |
411 | if ( sv_isobject(ST(0)) ) { | |
412 | /* copy existing object */ | |
413 | vs = ST(0); | |
414 | } | |
415 | else { | |
416 | /* create empty object */ | |
417 | vs = sv_newmortal(); | |
1946a074 | 418 | sv_setpvn(vs,"",0); |
9137345a JP |
419 | } |
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 | { | |
41be1fbd JH |
438 | dXSARGS; |
439 | if (items < 1) | |
440 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
441 | SP -= items; | |
442 | { | |
abb2c242 | 443 | SV * lobj = Nullsv; |
41be1fbd JH |
444 | |
445 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 446 | lobj = SvRV(ST(0)); |
41be1fbd JH |
447 | } |
448 | else | |
449 | Perl_croak(aTHX_ "lobj is not of type version"); | |
450 | ||
137d6fc0 | 451 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd JH |
452 | |
453 | PUTBACK; | |
454 | return; | |
455 | } | |
439cb1c4 JP |
456 | } |
457 | ||
458 | XS(XS_version_numify) | |
459 | { | |
41be1fbd JH |
460 | dXSARGS; |
461 | if (items < 1) | |
462 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
463 | SP -= items; | |
464 | { | |
abb2c242 | 465 | SV * lobj = Nullsv; |
41be1fbd JH |
466 | |
467 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 468 | lobj = SvRV(ST(0)); |
41be1fbd JH |
469 | } |
470 | else | |
471 | Perl_croak(aTHX_ "lobj is not of type version"); | |
472 | ||
137d6fc0 | 473 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd JH |
474 | |
475 | PUTBACK; | |
476 | return; | |
477 | } | |
439cb1c4 JP |
478 | } |
479 | ||
9137345a JP |
480 | XS(XS_version_normal) |
481 | { | |
482 | dXSARGS; | |
483 | if (items < 1) | |
484 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); | |
485 | SP -= items; | |
486 | { | |
487 | SV * lobj = Nullsv; | |
488 | ||
489 | if (sv_derived_from(ST(0), "version")) { | |
490 | lobj = SvRV(ST(0)); | |
491 | } | |
492 | else | |
493 | Perl_croak(aTHX_ "lobj is not of type version"); | |
494 | ||
495 | PUSHs(sv_2mortal(vnormal(lobj))); | |
496 | ||
497 | PUTBACK; | |
498 | return; | |
499 | } | |
500 | } | |
501 | ||
439cb1c4 JP |
502 | XS(XS_version_vcmp) |
503 | { | |
41be1fbd JH |
504 | dXSARGS; |
505 | if (items < 1) | |
506 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
507 | SP -= items; | |
508 | { | |
abb2c242 | 509 | SV * lobj = Nullsv; |
41be1fbd JH |
510 | |
511 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 512 | lobj = SvRV(ST(0)); |
41be1fbd JH |
513 | } |
514 | else | |
515 | Perl_croak(aTHX_ "lobj is not of type version"); | |
516 | ||
517 | { | |
518 | SV *rs; | |
519 | SV *rvs; | |
520 | SV * robj = ST(1); | |
521 | IV swap = (IV)SvIV(ST(2)); | |
522 | ||
523 | if ( ! sv_derived_from(robj, "version") ) | |
524 | { | |
525 | robj = new_version(robj); | |
526 | } | |
527 | rvs = SvRV(robj); | |
528 | ||
529 | if ( swap ) | |
530 | { | |
531 | rs = newSViv(vcmp(rvs,lobj)); | |
532 | } | |
533 | else | |
534 | { | |
535 | rs = newSViv(vcmp(lobj,rvs)); | |
536 | } | |
537 | ||
137d6fc0 | 538 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
539 | } |
540 | ||
541 | PUTBACK; | |
542 | return; | |
543 | } | |
439cb1c4 JP |
544 | } |
545 | ||
546 | XS(XS_version_boolean) | |
547 | { | |
41be1fbd JH |
548 | dXSARGS; |
549 | if (items < 1) | |
550 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
551 | SP -= items; | |
552 | { | |
abb2c242 | 553 | SV * lobj = Nullsv; |
41be1fbd JH |
554 | |
555 | if (sv_derived_from(ST(0), "version")) { | |
9137345a | 556 | lobj = SvRV(ST(0)); |
41be1fbd JH |
557 | } |
558 | else | |
559 | Perl_croak(aTHX_ "lobj is not of type version"); | |
560 | ||
561 | { | |
562 | SV *rs; | |
563 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); | |
137d6fc0 | 564 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
565 | } |
566 | ||
567 | PUTBACK; | |
568 | return; | |
569 | } | |
439cb1c4 JP |
570 | } |
571 | ||
572 | XS(XS_version_noop) | |
573 | { | |
2dfd8427 AL |
574 | dXSARGS; |
575 | if (items < 1) | |
576 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); | |
577 | if (sv_derived_from(ST(0), "version")) | |
578 | Perl_croak(aTHX_ "operation not supported with version object"); | |
579 | else | |
580 | Perl_croak(aTHX_ "lobj is not of type version"); | |
581 | #ifndef HASATTRIBUTE_NORETURN | |
582 | XSRETURN_EMPTY; | |
583 | #endif | |
439cb1c4 JP |
584 | } |
585 | ||
c8d69e4a JP |
586 | XS(XS_version_is_alpha) |
587 | { | |
588 | dXSARGS; | |
589 | if (items != 1) | |
590 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); | |
591 | SP -= items; | |
592 | { | |
abb2c242 | 593 | SV * lobj = Nullsv; |
c8d69e4a | 594 | |
9137345a JP |
595 | if (sv_derived_from(ST(0), "version")) |
596 | lobj = ST(0); | |
c8d69e4a JP |
597 | else |
598 | Perl_croak(aTHX_ "lobj is not of type version"); | |
599 | { | |
9137345a | 600 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) |
c8d69e4a JP |
601 | XSRETURN_YES; |
602 | else | |
603 | XSRETURN_NO; | |
604 | } | |
605 | PUTBACK; | |
606 | return; | |
607 | } | |
608 | } | |
609 | ||
137d6fc0 JP |
610 | XS(XS_version_qv) |
611 | { | |
612 | dXSARGS; | |
613 | if (items != 1) | |
614 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); | |
615 | SP -= items; | |
616 | { | |
617 | SV * ver = ST(0); | |
618 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ | |
619 | { | |
620 | SV *vs = sv_newmortal(); | |
621 | char *version; | |
622 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
623 | { | |
624 | char tbuf[64]; | |
625 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); | |
626 | version = savepv(tbuf); | |
627 | } | |
628 | else | |
629 | { | |
2e0de35c | 630 | version = savesvpv(ver); |
137d6fc0 JP |
631 | } |
632 | (void)scan_version(version,vs,TRUE); | |
633 | Safefree(version); | |
634 | ||
635 | PUSHs(vs); | |
636 | } | |
637 | else | |
638 | { | |
639 | PUSHs(sv_2mortal(new_version(ver))); | |
640 | } | |
641 | ||
642 | PUTBACK; | |
643 | return; | |
644 | } | |
645 | } | |
646 | ||
8800c35a JH |
647 | XS(XS_utf8_is_utf8) |
648 | { | |
41be1fbd JH |
649 | dXSARGS; |
650 | if (items != 1) | |
651 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
652 | { | |
6867be6d | 653 | const SV *sv = ST(0); |
41be1fbd JH |
654 | { |
655 | if (SvUTF8(sv)) | |
656 | XSRETURN_YES; | |
657 | else | |
658 | XSRETURN_NO; | |
659 | } | |
660 | } | |
661 | XSRETURN_EMPTY; | |
8800c35a JH |
662 | } |
663 | ||
1b026014 NIS |
664 | XS(XS_utf8_valid) |
665 | { | |
41be1fbd JH |
666 | dXSARGS; |
667 | if (items != 1) | |
668 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
669 | { | |
670 | SV * sv = ST(0); | |
671 | { | |
672 | STRLEN len; | |
e62f0680 | 673 | const char *s = SvPV_const(sv,len); |
6867be6d | 674 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
41be1fbd JH |
675 | XSRETURN_YES; |
676 | else | |
677 | XSRETURN_NO; | |
678 | } | |
679 | } | |
680 | XSRETURN_EMPTY; | |
1b026014 NIS |
681 | } |
682 | ||
683 | XS(XS_utf8_encode) | |
684 | { | |
685 | dXSARGS; | |
686 | if (items != 1) | |
687 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); | |
688 | { | |
689 | SV * sv = ST(0); | |
690 | ||
691 | sv_utf8_encode(sv); | |
692 | } | |
693 | XSRETURN_EMPTY; | |
694 | } | |
695 | ||
696 | XS(XS_utf8_decode) | |
697 | { | |
698 | dXSARGS; | |
699 | if (items != 1) | |
700 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); | |
701 | { | |
702 | SV * sv = ST(0); | |
6867be6d | 703 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 NIS |
704 | ST(0) = boolSV(RETVAL); |
705 | sv_2mortal(ST(0)); | |
706 | } | |
707 | XSRETURN(1); | |
708 | } | |
709 | ||
710 | XS(XS_utf8_upgrade) | |
711 | { | |
712 | dXSARGS; | |
713 | if (items != 1) | |
714 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); | |
715 | { | |
716 | SV * sv = ST(0); | |
717 | STRLEN RETVAL; | |
718 | dXSTARG; | |
719 | ||
720 | RETVAL = sv_utf8_upgrade(sv); | |
721 | XSprePUSH; PUSHi((IV)RETVAL); | |
722 | } | |
723 | XSRETURN(1); | |
724 | } | |
725 | ||
726 | XS(XS_utf8_downgrade) | |
727 | { | |
728 | dXSARGS; | |
729 | if (items < 1 || items > 2) | |
730 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); | |
731 | { | |
732 | SV * sv = ST(0); | |
6867be6d AL |
733 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
734 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 735 | |
1b026014 NIS |
736 | ST(0) = boolSV(RETVAL); |
737 | sv_2mortal(ST(0)); | |
738 | } | |
739 | XSRETURN(1); | |
740 | } | |
741 | ||
742 | XS(XS_utf8_native_to_unicode) | |
743 | { | |
744 | dXSARGS; | |
6867be6d | 745 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
746 | |
747 | if (items > 1) | |
748 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
749 | ||
1b026014 NIS |
750 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
751 | XSRETURN(1); | |
752 | } | |
753 | ||
754 | XS(XS_utf8_unicode_to_native) | |
755 | { | |
756 | dXSARGS; | |
6867be6d | 757 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
758 | |
759 | if (items > 1) | |
760 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
761 | ||
1b026014 NIS |
762 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
763 | XSRETURN(1); | |
764 | } | |
765 | ||
14a976d6 | 766 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 JH |
767 | { |
768 | dXSARGS; | |
769 | SV *sv = SvRV(ST(0)); | |
6867be6d | 770 | |
29569577 JH |
771 | if (items == 1) { |
772 | if (SvREADONLY(sv)) | |
773 | XSRETURN_YES; | |
774 | else | |
775 | XSRETURN_NO; | |
776 | } | |
777 | else if (items == 2) { | |
778 | if (SvTRUE(ST(1))) { | |
779 | SvREADONLY_on(sv); | |
780 | XSRETURN_YES; | |
781 | } | |
782 | else { | |
14a976d6 | 783 | /* I hope you really know what you are doing. */ |
29569577 JH |
784 | SvREADONLY_off(sv); |
785 | XSRETURN_NO; | |
786 | } | |
787 | } | |
14a976d6 | 788 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
789 | } |
790 | ||
14a976d6 | 791 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 JH |
792 | { |
793 | dXSARGS; | |
794 | SV *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 NC |
807 | { |
808 | dXSARGS; | |
809 | HV *hv = (HV *) SvRV(ST(0)); | |
6867be6d | 810 | |
3540d4ce AB |
811 | if (items != 1) |
812 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); | |
813 | hv_clear_placeholders(hv); | |
dfd4ef2f NC |
814 | XSRETURN(0); |
815 | } | |
39f7a870 | 816 | |
39cff0d9 AE |
817 | XS(XS_Regexp_DESTROY) |
818 | { | |
53c1dcc0 | 819 | PERL_UNUSED_ARG(cv); |
39cff0d9 AE |
820 | } |
821 | ||
39f7a870 JH |
822 | XS(XS_PerlIO_get_layers) |
823 | { | |
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) { | |
39f7a870 JH |
836 | SV **svp; |
837 | ||
838 | for (svp = MARK + 2; svp <= SP; svp += 2) { | |
839 | SV **varp = svp; | |
840 | SV **valp = svp + 1; | |
841 | STRLEN klen; | |
e62f0680 | 842 | const char *key = SvPV_const(*varp, klen); |
39f7a870 JH |
843 | |
844 | switch (*key) { | |
845 | case 'i': | |
846 | if (klen == 5 && memEQ(key, "input", 5)) { | |
847 | input = SvTRUE(*valp); | |
848 | break; | |
849 | } | |
850 | goto fail; | |
851 | case 'o': | |
852 | if (klen == 6 && memEQ(key, "output", 6)) { | |
853 | input = !SvTRUE(*valp); | |
854 | break; | |
855 | } | |
856 | goto fail; | |
857 | case 'd': | |
858 | if (klen == 7 && memEQ(key, "details", 7)) { | |
859 | details = SvTRUE(*valp); | |
860 | break; | |
861 | } | |
862 | goto fail; | |
863 | default: | |
864 | fail: | |
865 | Perl_croak(aTHX_ | |
866 | "get_layers: unknown argument '%s'", | |
867 | key); | |
868 | } | |
869 | } | |
870 | ||
871 | SP -= (items - 1); | |
872 | } | |
873 | ||
874 | sv = POPs; | |
875 | gv = (GV*)sv; | |
876 | ||
877 | if (!isGV(sv)) { | |
878 | if (SvROK(sv) && isGV(SvRV(sv))) | |
879 | gv = (GV*)SvRV(sv); | |
880 | else | |
7a5fd60d | 881 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
39f7a870 JH |
882 | } |
883 | ||
884 | if (gv && (io = GvIO(gv))) { | |
885 | dTARGET; | |
886 | AV* av = PerlIO_get_layers(aTHX_ input ? | |
887 | IoIFP(io) : IoOFP(io)); | |
888 | I32 i; | |
889 | I32 last = av_len(av); | |
890 | I32 nitem = 0; | |
891 | ||
892 | for (i = last; i >= 0; i -= 3) { | |
893 | SV **namsvp; | |
894 | SV **argsvp; | |
895 | SV **flgsvp; | |
896 | bool namok, argok, flgok; | |
897 | ||
898 | namsvp = av_fetch(av, i - 2, FALSE); | |
899 | argsvp = av_fetch(av, i - 1, FALSE); | |
900 | flgsvp = av_fetch(av, i, FALSE); | |
901 | ||
902 | namok = namsvp && *namsvp && SvPOK(*namsvp); | |
903 | argok = argsvp && *argsvp && SvPOK(*argsvp); | |
904 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
905 | ||
906 | if (details) { | |
ec3bab8e NC |
907 | XPUSHs(namok |
908 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) | |
909 | : &PL_sv_undef); | |
910 | XPUSHs(argok | |
911 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) | |
912 | : &PL_sv_undef); | |
39f7a870 JH |
913 | if (flgok) |
914 | XPUSHi(SvIVX(*flgsvp)); | |
915 | else | |
916 | XPUSHs(&PL_sv_undef); | |
917 | nitem += 3; | |
918 | } | |
919 | else { | |
920 | if (namok && argok) | |
921 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", | |
922 | *namsvp, *argsvp)); | |
923 | else if (namok) | |
924 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); | |
925 | else | |
926 | XPUSHs(&PL_sv_undef); | |
927 | nitem++; | |
928 | if (flgok) { | |
929 | IV flags = SvIVX(*flgsvp); | |
930 | ||
931 | if (flags & PERLIO_F_UTF8) { | |
932 | XPUSHs(newSVpvn("utf8", 4)); | |
933 | nitem++; | |
934 | } | |
935 | } | |
936 | } | |
937 | } | |
938 | ||
939 | SvREFCNT_dec(av); | |
940 | ||
941 | XSRETURN(nitem); | |
942 | } | |
943 | } | |
5fef3b4a | 944 | #endif |
39f7a870 JH |
945 | |
946 | XSRETURN(0); | |
947 | } | |
948 | ||
9a7034eb | 949 | XS(XS_Internals_hash_seed) |
c910b28a | 950 | { |
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 NC |
960 | { |
961 | /* Using dXSARGS would also have dITEM and dSP, | |
962 | * which define 2 unused local variables. */ | |
557b887a | 963 | dAXMARK; |
53c1dcc0 | 964 | PERL_UNUSED_ARG(cv); |
ad73156c | 965 | PERL_UNUSED_VAR(mark); |
008fb0c0 | 966 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 NC |
967 | } |
968 | ||
05619474 NC |
969 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
970 | { | |
971 | dXSARGS; | |
972 | if (SvROK(ST(0))) { | |
6867be6d | 973 | const HV *hv = (HV *) SvRV(ST(0)); |
05619474 NC |
974 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
975 | if (HvREHASH(hv)) | |
976 | XSRETURN_YES; | |
977 | else | |
978 | XSRETURN_NO; | |
979 | } | |
980 | } | |
981 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); | |
982 | } | |
241d1a3b NC |
983 | |
984 | /* | |
985 | * Local variables: | |
986 | * c-indentation-style: bsd | |
987 | * c-basic-offset: 4 | |
988 | * indent-tabs-mode: t | |
989 | * End: | |
990 | * | |
37442d52 RGS |
991 | * ex: set ts=8 sts=4 sw=4 noet: |
992 | */ |