Commit | Line | Data |
---|---|---|
d6376244 JH |
1 | /* universal.c |
2 | * | |
4bb101f2 JH |
3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4 | * 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 | ||
6d4a7be2 | 17 | #include "EXTERN.h" |
864dbfa3 | 18 | #define PERL_IN_UNIVERSAL_C |
6d4a7be2 | 19 | #include "perl.h" |
6d4a7be2 | 20 | |
39f7a870 JH |
21 | #ifdef USE_PERLIO |
22 | #include "perliol.h" /* For the PERLIO_F_XXX */ | |
23 | #endif | |
24 | ||
6d4a7be2 | 25 | /* |
26 | * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com> | |
27 | * The main guts of traverse_isa was actually copied from gv_fetchmeth | |
28 | */ | |
29 | ||
76e3520e | 30 | STATIC SV * |
301daebc MS |
31 | S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash, |
32 | int len, int level) | |
6d4a7be2 | 33 | { |
34 | AV* av; | |
35 | GV* gv; | |
36 | GV** gvp; | |
37 | HV* hv = Nullhv; | |
46e4b22b | 38 | SV* subgen = Nullsv; |
6d4a7be2 | 39 | |
301daebc MS |
40 | /* A stash/class can go by many names (ie. User == main::User), so |
41 | we compare the stash itself just in case */ | |
42 | if (name_stash && (stash == name_stash)) | |
43 | return &PL_sv_yes; | |
6d4a7be2 | 44 | |
46e4b22b | 45 | if (strEQ(HvNAME(stash), name)) |
3280af22 | 46 | return &PL_sv_yes; |
6d4a7be2 | 47 | |
a1d407e8 DM |
48 | if (strEQ(name, "UNIVERSAL")) |
49 | return &PL_sv_yes; | |
50 | ||
6d4a7be2 | 51 | if (level > 100) |
46e4b22b GS |
52 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
53 | HvNAME(stash)); | |
6d4a7be2 | 54 | |
55 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE); | |
56 | ||
46e4b22b GS |
57 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv)) |
58 | && (hv = GvHV(gv))) | |
59 | { | |
eb160463 | 60 | if (SvIV(subgen) == (IV)PL_sub_generation) { |
46e4b22b GS |
61 | SV* sv; |
62 | SV** svp = (SV**)hv_fetch(hv, name, len, FALSE); | |
63 | if (svp && (sv = *svp) != (SV*)&PL_sv_undef) { | |
64 | DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n", | |
65 | name, HvNAME(stash)) ); | |
66 | return sv; | |
67 | } | |
68 | } | |
69 | else { | |
70 | DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", | |
71 | HvNAME(stash)) ); | |
72 | hv_clear(hv); | |
73 | sv_setiv(subgen, PL_sub_generation); | |
74 | } | |
6d4a7be2 | 75 | } |
76 | ||
77 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); | |
46e4b22b | 78 | |
3280af22 | 79 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
46e4b22b | 80 | if (!hv || !subgen) { |
6d4a7be2 | 81 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE); |
82 | ||
83 | gv = *gvp; | |
84 | ||
85 | if (SvTYPE(gv) != SVt_PVGV) | |
86 | gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); | |
87 | ||
46e4b22b GS |
88 | if (!hv) |
89 | hv = GvHVn(gv); | |
90 | if (!subgen) { | |
91 | subgen = newSViv(PL_sub_generation); | |
92 | GvSV(gv) = subgen; | |
93 | } | |
6d4a7be2 | 94 | } |
46e4b22b | 95 | if (hv) { |
6d4a7be2 | 96 | SV** svp = AvARRAY(av); |
93965878 NIS |
97 | /* NOTE: No support for tied ISA */ |
98 | I32 items = AvFILLp(av) + 1; | |
6d4a7be2 | 99 | while (items--) { |
100 | SV* sv = *svp++; | |
101 | HV* basestash = gv_stashsv(sv, FALSE); | |
102 | if (!basestash) { | |
599cee73 | 103 | if (ckWARN(WARN_MISC)) |
9014280d | 104 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d NC |
105 | "Can't locate package %"SVf" for @%s::ISA", |
106 | sv, HvNAME(stash)); | |
6d4a7be2 | 107 | continue; |
108 | } | |
301daebc MS |
109 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
110 | len, level + 1)) { | |
3280af22 NIS |
111 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
112 | return &PL_sv_yes; | |
6d4a7be2 | 113 | } |
114 | } | |
3280af22 | 115 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 | 116 | } |
117 | } | |
a1d407e8 | 118 | return &PL_sv_no; |
6d4a7be2 | 119 | } |
120 | ||
954c1994 | 121 | /* |
ccfc67b7 JH |
122 | =head1 SV Manipulation Functions |
123 | ||
954c1994 GS |
124 | =for apidoc sv_derived_from |
125 | ||
126 | Returns a boolean indicating whether the SV is derived from the specified | |
127 | class. This is the function that implements C<UNIVERSAL::isa>. It works | |
128 | for class names as well as for objects. | |
129 | ||
130 | =cut | |
131 | */ | |
132 | ||
55497cff | 133 | bool |
864dbfa3 | 134 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff | 135 | { |
55497cff | 136 | char *type; |
137 | HV *stash; | |
301daebc | 138 | HV *name_stash; |
46e4b22b | 139 | |
55497cff | 140 | stash = Nullhv; |
141 | type = Nullch; | |
46e4b22b | 142 | |
55497cff | 143 | if (SvGMAGICAL(sv)) |
144 | mg_get(sv) ; | |
145 | ||
146 | if (SvROK(sv)) { | |
147 | sv = SvRV(sv); | |
148 | type = sv_reftype(sv,0); | |
46e4b22b | 149 | if (SvOBJECT(sv)) |
55497cff | 150 | stash = SvSTASH(sv); |
151 | } | |
152 | else { | |
153 | stash = gv_stashsv(sv, FALSE); | |
154 | } | |
46e4b22b | 155 | |
301daebc MS |
156 | name_stash = gv_stashpv(name, FALSE); |
157 | ||
55497cff | 158 | return (type && strEQ(type,name)) || |
301daebc MS |
159 | (stash && isa_lookup(stash, name, name_stash, strlen(name), 0) |
160 | == &PL_sv_yes) | |
55497cff | 161 | ? TRUE |
162 | : FALSE ; | |
55497cff | 163 | } |
164 | ||
1b026014 NIS |
165 | #include "XSUB.h" |
166 | ||
acfe0abc GS |
167 | void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
168 | void XS_UNIVERSAL_can(pTHX_ CV *cv); | |
169 | void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); | |
439cb1c4 JP |
170 | XS(XS_version_new); |
171 | XS(XS_version_stringify); | |
172 | XS(XS_version_numify); | |
173 | XS(XS_version_vcmp); | |
174 | XS(XS_version_boolean); | |
175 | XS(XS_version_noop); | |
c8d69e4a | 176 | XS(XS_version_is_alpha); |
137d6fc0 | 177 | XS(XS_version_qv); |
8800c35a | 178 | XS(XS_utf8_is_utf8); |
1b026014 NIS |
179 | XS(XS_utf8_valid); |
180 | XS(XS_utf8_encode); | |
181 | XS(XS_utf8_decode); | |
182 | XS(XS_utf8_upgrade); | |
183 | XS(XS_utf8_downgrade); | |
184 | XS(XS_utf8_unicode_to_native); | |
185 | XS(XS_utf8_native_to_unicode); | |
29569577 JH |
186 | XS(XS_Internals_SvREADONLY); |
187 | XS(XS_Internals_SvREFCNT); | |
f044d0d1 | 188 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 | 189 | XS(XS_PerlIO_get_layers); |
39cff0d9 | 190 | XS(XS_Regexp_DESTROY); |
9a7034eb | 191 | XS(XS_Internals_hash_seed); |
008fb0c0 | 192 | XS(XS_Internals_rehash_seed); |
05619474 | 193 | XS(XS_Internals_HvREHASH); |
0cb96387 GS |
194 | |
195 | void | |
196 | Perl_boot_core_UNIVERSAL(pTHX) | |
197 | { | |
198 | char *file = __FILE__; | |
199 | ||
200 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); | |
201 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); | |
202 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); | |
439cb1c4 | 203 | { |
ad63d80f JP |
204 | /* register the overloading (type 'A') magic */ |
205 | PL_amagic_generation++; | |
439cb1c4 | 206 | /* Make it findable via fetchmethod */ |
be2ebcad | 207 | newXS("version::()", XS_version_noop, file); |
439cb1c4 JP |
208 | newXS("version::new", XS_version_new, file); |
209 | newXS("version::(\"\"", XS_version_stringify, file); | |
210 | newXS("version::stringify", XS_version_stringify, file); | |
211 | newXS("version::(0+", XS_version_numify, file); | |
212 | newXS("version::numify", XS_version_numify, file); | |
213 | newXS("version::(cmp", XS_version_vcmp, file); | |
214 | newXS("version::(<=>", XS_version_vcmp, file); | |
215 | newXS("version::vcmp", XS_version_vcmp, file); | |
216 | newXS("version::(bool", XS_version_boolean, file); | |
217 | newXS("version::boolean", XS_version_boolean, file); | |
218 | newXS("version::(nomethod", XS_version_noop, file); | |
219 | newXS("version::noop", XS_version_noop, file); | |
c8d69e4a | 220 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 | 221 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 | 222 | } |
8800c35a | 223 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 NIS |
224 | newXS("utf8::valid", XS_utf8_valid, file); |
225 | newXS("utf8::encode", XS_utf8_encode, file); | |
226 | newXS("utf8::decode", XS_utf8_decode, file); | |
227 | newXS("utf8::upgrade", XS_utf8_upgrade, file); | |
228 | newXS("utf8::downgrade", XS_utf8_downgrade, file); | |
229 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); | |
230 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); | |
29569577 JH |
231 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
232 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); | |
dfd4ef2f | 233 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 | 234 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce JH |
235 | newXSproto("PerlIO::get_layers", |
236 | XS_PerlIO_get_layers, file, "*;@"); | |
39cff0d9 | 237 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb | 238 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 | 239 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 | 240 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 GS |
241 | } |
242 | ||
55497cff | 243 | |
6d4a7be2 | 244 | XS(XS_UNIVERSAL_isa) |
245 | { | |
246 | dXSARGS; | |
55497cff | 247 | SV *sv; |
248 | char *name; | |
2d8e6c8d | 249 | STRLEN n_a; |
6d4a7be2 | 250 | |
251 | if (items != 2) | |
cea2e8a9 | 252 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 | 253 | |
254 | sv = ST(0); | |
f8f70380 | 255 | |
d3f7f2b2 GS |
256 | if (SvGMAGICAL(sv)) |
257 | mg_get(sv); | |
258 | ||
253ecd6d RGS |
259 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
260 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
261 | XSRETURN_UNDEF; |
262 | ||
2d8e6c8d | 263 | name = (char *)SvPV(ST(1),n_a); |
6d4a7be2 | 264 | |
54310121 | 265 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 | 266 | XSRETURN(1); |
267 | } | |
268 | ||
6d4a7be2 | 269 | XS(XS_UNIVERSAL_can) |
270 | { | |
271 | dXSARGS; | |
272 | SV *sv; | |
273 | char *name; | |
274 | SV *rv; | |
6f08146e | 275 | HV *pkg = NULL; |
2d8e6c8d | 276 | STRLEN n_a; |
6d4a7be2 | 277 | |
278 | if (items != 2) | |
cea2e8a9 | 279 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 | 280 | |
281 | sv = ST(0); | |
f8f70380 | 282 | |
d3f7f2b2 GS |
283 | if (SvGMAGICAL(sv)) |
284 | mg_get(sv); | |
285 | ||
253ecd6d RGS |
286 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
287 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
288 | XSRETURN_UNDEF; |
289 | ||
2d8e6c8d | 290 | name = (char *)SvPV(ST(1),n_a); |
3280af22 | 291 | rv = &PL_sv_undef; |
6d4a7be2 | 292 | |
46e4b22b | 293 | if (SvROK(sv)) { |
6f08146e | 294 | sv = (SV*)SvRV(sv); |
46e4b22b | 295 | if (SvOBJECT(sv)) |
6f08146e NIS |
296 | pkg = SvSTASH(sv); |
297 | } | |
298 | else { | |
299 | pkg = gv_stashsv(sv, FALSE); | |
300 | } | |
301 | ||
302 | if (pkg) { | |
dc848c6f | 303 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
304 | if (gv && isGV(gv)) | |
305 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); | |
6d4a7be2 | 306 | } |
307 | ||
308 | ST(0) = rv; | |
309 | XSRETURN(1); | |
310 | } | |
311 | ||
6d4a7be2 | 312 | XS(XS_UNIVERSAL_VERSION) |
313 | { | |
314 | dXSARGS; | |
315 | HV *pkg; | |
316 | GV **gvp; | |
317 | GV *gv; | |
318 | SV *sv; | |
319 | char *undef; | |
320 | ||
1571675a | 321 | if (SvROK(ST(0))) { |
6d4a7be2 | 322 | sv = (SV*)SvRV(ST(0)); |
1571675a | 323 | if (!SvOBJECT(sv)) |
cea2e8a9 | 324 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 325 | pkg = SvSTASH(sv); |
326 | } | |
327 | else { | |
328 | pkg = gv_stashsv(ST(0), FALSE); | |
329 | } | |
330 | ||
331 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); | |
332 | ||
d4bea2fb | 333 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 | 334 | SV *nsv = sv_newmortal(); |
335 | sv_setsv(nsv, sv); | |
336 | sv = nsv; | |
137d6fc0 JP |
337 | if ( !sv_derived_from(sv, "version")) |
338 | upg_version(sv); | |
6d4a7be2 | 339 | undef = Nullch; |
340 | } | |
341 | else { | |
3280af22 | 342 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 | 343 | undef = "(undef)"; |
344 | } | |
345 | ||
1571675a GS |
346 | if (items > 1) { |
347 | STRLEN len; | |
348 | SV *req = ST(1); | |
349 | ||
62658f4d PM |
350 | if (undef) { |
351 | if (pkg) | |
352 | Perl_croak(aTHX_ | |
353 | "%s does not define $%s::VERSION--version check failed", | |
354 | HvNAME(pkg), HvNAME(pkg)); | |
355 | else { | |
356 | char *str = SvPVx(ST(0), len); | |
357 | ||
358 | Perl_croak(aTHX_ | |
359 | "%s defines neither package nor VERSION--version check failed", str); | |
360 | } | |
361 | } | |
ad63d80f | 362 | |
137d6fc0 JP |
363 | if ( !sv_derived_from(req, "version")) { |
364 | /* req may very well be R/O, so create a new object */ | |
365 | SV *nsv = sv_newmortal(); | |
366 | sv_setsv(nsv, req); | |
367 | req = nsv; | |
368 | upg_version(req); | |
369 | } | |
1571675a | 370 | |
137d6fc0 | 371 | if ( vcmp( req, sv ) > 0 ) |
e3feee4e RB |
372 | Perl_croak(aTHX_ |
373 | "%s version %"SVf" required--this is only version %"SVf, | |
0773b1f0 | 374 | HvNAME(pkg), req, sv); |
2d8e6c8d | 375 | } |
6d4a7be2 | 376 | |
377 | ST(0) = sv; | |
378 | ||
379 | XSRETURN(1); | |
380 | } | |
381 | ||
439cb1c4 JP |
382 | XS(XS_version_new) |
383 | { | |
384 | dXSARGS; | |
129318bd | 385 | if (items > 3) |
439cb1c4 JP |
386 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
387 | SP -= items; | |
388 | { | |
137d6fc0 JP |
389 | char * class = (char *)SvPV_nolen(ST(0)); |
390 | SV *vs = ST(1); | |
391 | SV *rv; | |
129318bd JP |
392 | if (items == 3 ) |
393 | { | |
137d6fc0 JP |
394 | vs = sv_newmortal(); |
395 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen(ST(2))); | |
129318bd | 396 | } |
439cb1c4 | 397 | |
137d6fc0 JP |
398 | rv = new_version(vs); |
399 | if ( strcmp(class,"version") != 0 ) /* inherited new() */ | |
400 | sv_bless(rv, gv_stashpv(class,TRUE)); | |
401 | ||
402 | PUSHs(sv_2mortal(rv)); | |
439cb1c4 JP |
403 | PUTBACK; |
404 | return; | |
405 | } | |
406 | } | |
407 | ||
408 | XS(XS_version_stringify) | |
409 | { | |
41be1fbd JH |
410 | dXSARGS; |
411 | if (items < 1) | |
412 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
413 | SP -= items; | |
414 | { | |
415 | SV * lobj; | |
416 | ||
417 | if (sv_derived_from(ST(0), "version")) { | |
418 | SV *tmp = SvRV(ST(0)); | |
419 | lobj = tmp; | |
420 | } | |
421 | else | |
422 | Perl_croak(aTHX_ "lobj is not of type version"); | |
423 | ||
137d6fc0 | 424 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd JH |
425 | |
426 | PUTBACK; | |
427 | return; | |
428 | } | |
439cb1c4 JP |
429 | } |
430 | ||
431 | XS(XS_version_numify) | |
432 | { | |
41be1fbd JH |
433 | dXSARGS; |
434 | if (items < 1) | |
435 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
436 | SP -= items; | |
437 | { | |
438 | SV * lobj; | |
439 | ||
440 | if (sv_derived_from(ST(0), "version")) { | |
441 | SV *tmp = SvRV(ST(0)); | |
442 | lobj = tmp; | |
443 | } | |
444 | else | |
445 | Perl_croak(aTHX_ "lobj is not of type version"); | |
446 | ||
137d6fc0 | 447 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd JH |
448 | |
449 | PUTBACK; | |
450 | return; | |
451 | } | |
439cb1c4 JP |
452 | } |
453 | ||
454 | XS(XS_version_vcmp) | |
455 | { | |
41be1fbd JH |
456 | dXSARGS; |
457 | if (items < 1) | |
458 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
459 | SP -= items; | |
460 | { | |
461 | SV * lobj; | |
462 | ||
463 | if (sv_derived_from(ST(0), "version")) { | |
464 | SV *tmp = SvRV(ST(0)); | |
465 | lobj = tmp; | |
466 | } | |
467 | else | |
468 | Perl_croak(aTHX_ "lobj is not of type version"); | |
469 | ||
470 | { | |
471 | SV *rs; | |
472 | SV *rvs; | |
473 | SV * robj = ST(1); | |
474 | IV swap = (IV)SvIV(ST(2)); | |
475 | ||
476 | if ( ! sv_derived_from(robj, "version") ) | |
477 | { | |
478 | robj = new_version(robj); | |
479 | } | |
480 | rvs = SvRV(robj); | |
481 | ||
482 | if ( swap ) | |
483 | { | |
484 | rs = newSViv(vcmp(rvs,lobj)); | |
485 | } | |
486 | else | |
487 | { | |
488 | rs = newSViv(vcmp(lobj,rvs)); | |
489 | } | |
490 | ||
137d6fc0 | 491 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
492 | } |
493 | ||
494 | PUTBACK; | |
495 | return; | |
496 | } | |
439cb1c4 JP |
497 | } |
498 | ||
499 | XS(XS_version_boolean) | |
500 | { | |
41be1fbd JH |
501 | dXSARGS; |
502 | if (items < 1) | |
503 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
504 | SP -= items; | |
505 | { | |
506 | SV * lobj; | |
507 | ||
508 | if (sv_derived_from(ST(0), "version")) { | |
509 | SV *tmp = SvRV(ST(0)); | |
510 | lobj = tmp; | |
511 | } | |
512 | else | |
513 | Perl_croak(aTHX_ "lobj is not of type version"); | |
514 | ||
515 | { | |
516 | SV *rs; | |
517 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); | |
137d6fc0 | 518 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
519 | } |
520 | ||
521 | PUTBACK; | |
522 | return; | |
523 | } | |
439cb1c4 JP |
524 | } |
525 | ||
526 | XS(XS_version_noop) | |
527 | { | |
41be1fbd JH |
528 | dXSARGS; |
529 | if (items < 1) | |
530 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); | |
531 | { | |
532 | SV * lobj; | |
533 | ||
534 | if (sv_derived_from(ST(0), "version")) { | |
535 | SV *tmp = SvRV(ST(0)); | |
536 | lobj = tmp; | |
537 | } | |
538 | else | |
539 | Perl_croak(aTHX_ "lobj is not of type version"); | |
540 | ||
541 | { | |
542 | Perl_croak(aTHX_ "operation not supported with version object"); | |
543 | } | |
544 | ||
545 | } | |
546 | XSRETURN_EMPTY; | |
439cb1c4 JP |
547 | } |
548 | ||
c8d69e4a JP |
549 | XS(XS_version_is_alpha) |
550 | { | |
551 | dXSARGS; | |
552 | if (items != 1) | |
553 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); | |
554 | SP -= items; | |
555 | { | |
556 | SV *lobj; | |
557 | ||
558 | if (sv_derived_from(ST(0), "version")) { | |
559 | SV *tmp = SvRV(ST(0)); | |
560 | lobj = tmp; | |
561 | } | |
562 | else | |
563 | Perl_croak(aTHX_ "lobj is not of type version"); | |
564 | { | |
565 | I32 len = av_len((AV *)lobj); | |
566 | I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); | |
567 | if ( digit < 0 ) | |
568 | XSRETURN_YES; | |
569 | else | |
570 | XSRETURN_NO; | |
571 | } | |
572 | PUTBACK; | |
573 | return; | |
574 | } | |
575 | } | |
576 | ||
137d6fc0 JP |
577 | XS(XS_version_qv) |
578 | { | |
579 | dXSARGS; | |
580 | if (items != 1) | |
581 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); | |
582 | SP -= items; | |
583 | { | |
584 | SV * ver = ST(0); | |
585 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ | |
586 | { | |
587 | SV *vs = sv_newmortal(); | |
588 | char *version; | |
589 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
590 | { | |
591 | char tbuf[64]; | |
592 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); | |
593 | version = savepv(tbuf); | |
594 | } | |
595 | else | |
596 | { | |
597 | version = savepv(SvPV_nolen(ver)); | |
598 | } | |
599 | (void)scan_version(version,vs,TRUE); | |
600 | Safefree(version); | |
601 | ||
602 | PUSHs(vs); | |
603 | } | |
604 | else | |
605 | { | |
606 | PUSHs(sv_2mortal(new_version(ver))); | |
607 | } | |
608 | ||
609 | PUTBACK; | |
610 | return; | |
611 | } | |
612 | } | |
613 | ||
8800c35a JH |
614 | XS(XS_utf8_is_utf8) |
615 | { | |
41be1fbd JH |
616 | dXSARGS; |
617 | if (items != 1) | |
618 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
619 | { | |
620 | SV * sv = ST(0); | |
621 | { | |
622 | if (SvUTF8(sv)) | |
623 | XSRETURN_YES; | |
624 | else | |
625 | XSRETURN_NO; | |
626 | } | |
627 | } | |
628 | XSRETURN_EMPTY; | |
8800c35a JH |
629 | } |
630 | ||
1b026014 NIS |
631 | XS(XS_utf8_valid) |
632 | { | |
41be1fbd JH |
633 | dXSARGS; |
634 | if (items != 1) | |
635 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
636 | { | |
637 | SV * sv = ST(0); | |
638 | { | |
639 | STRLEN len; | |
640 | char *s = SvPV(sv,len); | |
641 | if (!SvUTF8(sv) || is_utf8_string((U8*)s,len)) | |
642 | XSRETURN_YES; | |
643 | else | |
644 | XSRETURN_NO; | |
645 | } | |
646 | } | |
647 | XSRETURN_EMPTY; | |
1b026014 NIS |
648 | } |
649 | ||
650 | XS(XS_utf8_encode) | |
651 | { | |
652 | dXSARGS; | |
653 | if (items != 1) | |
654 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); | |
655 | { | |
656 | SV * sv = ST(0); | |
657 | ||
658 | sv_utf8_encode(sv); | |
659 | } | |
660 | XSRETURN_EMPTY; | |
661 | } | |
662 | ||
663 | XS(XS_utf8_decode) | |
664 | { | |
665 | dXSARGS; | |
666 | if (items != 1) | |
667 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); | |
668 | { | |
669 | SV * sv = ST(0); | |
670 | bool RETVAL; | |
671 | ||
672 | RETVAL = sv_utf8_decode(sv); | |
673 | ST(0) = boolSV(RETVAL); | |
674 | sv_2mortal(ST(0)); | |
675 | } | |
676 | XSRETURN(1); | |
677 | } | |
678 | ||
679 | XS(XS_utf8_upgrade) | |
680 | { | |
681 | dXSARGS; | |
682 | if (items != 1) | |
683 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); | |
684 | { | |
685 | SV * sv = ST(0); | |
686 | STRLEN RETVAL; | |
687 | dXSTARG; | |
688 | ||
689 | RETVAL = sv_utf8_upgrade(sv); | |
690 | XSprePUSH; PUSHi((IV)RETVAL); | |
691 | } | |
692 | XSRETURN(1); | |
693 | } | |
694 | ||
695 | XS(XS_utf8_downgrade) | |
696 | { | |
697 | dXSARGS; | |
698 | if (items < 1 || items > 2) | |
699 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); | |
700 | { | |
701 | SV * sv = ST(0); | |
702 | bool failok; | |
703 | bool RETVAL; | |
704 | ||
705 | if (items < 2) | |
706 | failok = 0; | |
707 | else { | |
708 | failok = (int)SvIV(ST(1)); | |
709 | } | |
710 | ||
711 | RETVAL = sv_utf8_downgrade(sv, failok); | |
712 | ST(0) = boolSV(RETVAL); | |
713 | sv_2mortal(ST(0)); | |
714 | } | |
715 | XSRETURN(1); | |
716 | } | |
717 | ||
718 | XS(XS_utf8_native_to_unicode) | |
719 | { | |
720 | dXSARGS; | |
721 | UV uv = SvUV(ST(0)); | |
b7953727 JH |
722 | |
723 | if (items > 1) | |
724 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
725 | ||
1b026014 NIS |
726 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
727 | XSRETURN(1); | |
728 | } | |
729 | ||
730 | XS(XS_utf8_unicode_to_native) | |
731 | { | |
732 | dXSARGS; | |
733 | UV uv = SvUV(ST(0)); | |
b7953727 JH |
734 | |
735 | if (items > 1) | |
736 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
737 | ||
1b026014 NIS |
738 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
739 | XSRETURN(1); | |
740 | } | |
741 | ||
14a976d6 | 742 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 JH |
743 | { |
744 | dXSARGS; | |
745 | SV *sv = SvRV(ST(0)); | |
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; | |
769 | SV *sv = SvRV(ST(0)); | |
770 | if (items == 1) | |
14a976d6 | 771 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 | 772 | else if (items == 2) { |
14a976d6 | 773 | /* I hope you really know what you are doing. */ |
29569577 JH |
774 | SvREFCNT(sv) = SvIV(ST(1)); |
775 | XSRETURN_IV(SvREFCNT(sv)); | |
776 | } | |
14a976d6 | 777 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
778 | } |
779 | ||
f044d0d1 | 780 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f NC |
781 | { |
782 | dXSARGS; | |
783 | HV *hv = (HV *) SvRV(ST(0)); | |
3540d4ce AB |
784 | if (items != 1) |
785 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); | |
786 | hv_clear_placeholders(hv); | |
dfd4ef2f NC |
787 | XSRETURN(0); |
788 | } | |
39f7a870 | 789 | |
39cff0d9 AE |
790 | XS(XS_Regexp_DESTROY) |
791 | { | |
792 | ||
793 | } | |
794 | ||
39f7a870 JH |
795 | XS(XS_PerlIO_get_layers) |
796 | { | |
797 | dXSARGS; | |
798 | if (items < 1 || items % 2 == 0) | |
799 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); | |
5fef3b4a | 800 | #ifdef USE_PERLIO |
39f7a870 JH |
801 | { |
802 | SV * sv; | |
803 | GV * gv; | |
804 | IO * io; | |
805 | bool input = TRUE; | |
806 | bool details = FALSE; | |
807 | ||
808 | if (items > 1) { | |
39f7a870 JH |
809 | SV **svp; |
810 | ||
811 | for (svp = MARK + 2; svp <= SP; svp += 2) { | |
812 | SV **varp = svp; | |
813 | SV **valp = svp + 1; | |
814 | STRLEN klen; | |
815 | char *key = SvPV(*varp, klen); | |
816 | ||
817 | switch (*key) { | |
818 | case 'i': | |
819 | if (klen == 5 && memEQ(key, "input", 5)) { | |
820 | input = SvTRUE(*valp); | |
821 | break; | |
822 | } | |
823 | goto fail; | |
824 | case 'o': | |
825 | if (klen == 6 && memEQ(key, "output", 6)) { | |
826 | input = !SvTRUE(*valp); | |
827 | break; | |
828 | } | |
829 | goto fail; | |
830 | case 'd': | |
831 | if (klen == 7 && memEQ(key, "details", 7)) { | |
832 | details = SvTRUE(*valp); | |
833 | break; | |
834 | } | |
835 | goto fail; | |
836 | default: | |
837 | fail: | |
838 | Perl_croak(aTHX_ | |
839 | "get_layers: unknown argument '%s'", | |
840 | key); | |
841 | } | |
842 | } | |
843 | ||
844 | SP -= (items - 1); | |
845 | } | |
846 | ||
847 | sv = POPs; | |
848 | gv = (GV*)sv; | |
849 | ||
850 | if (!isGV(sv)) { | |
851 | if (SvROK(sv) && isGV(SvRV(sv))) | |
852 | gv = (GV*)SvRV(sv); | |
853 | else | |
854 | gv = gv_fetchpv(SvPVX(sv), FALSE, SVt_PVIO); | |
855 | } | |
856 | ||
857 | if (gv && (io = GvIO(gv))) { | |
858 | dTARGET; | |
859 | AV* av = PerlIO_get_layers(aTHX_ input ? | |
860 | IoIFP(io) : IoOFP(io)); | |
861 | I32 i; | |
862 | I32 last = av_len(av); | |
863 | I32 nitem = 0; | |
864 | ||
865 | for (i = last; i >= 0; i -= 3) { | |
866 | SV **namsvp; | |
867 | SV **argsvp; | |
868 | SV **flgsvp; | |
869 | bool namok, argok, flgok; | |
870 | ||
871 | namsvp = av_fetch(av, i - 2, FALSE); | |
872 | argsvp = av_fetch(av, i - 1, FALSE); | |
873 | flgsvp = av_fetch(av, i, FALSE); | |
874 | ||
875 | namok = namsvp && *namsvp && SvPOK(*namsvp); | |
876 | argok = argsvp && *argsvp && SvPOK(*argsvp); | |
877 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
878 | ||
879 | if (details) { | |
880 | XPUSHs(namok ? | |
881 | newSVpv(SvPVX(*namsvp), 0) : &PL_sv_undef); | |
882 | XPUSHs(argok ? | |
883 | newSVpv(SvPVX(*argsvp), 0) : &PL_sv_undef); | |
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) { | |
900 | IV flags = SvIVX(*flgsvp); | |
901 | ||
902 | if (flags & PERLIO_F_UTF8) { | |
903 | XPUSHs(newSVpvn("utf8", 4)); | |
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. */ | |
924 | dMARK; dAX; | |
81eaca17 | 925 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a JH |
926 | } |
927 | ||
008fb0c0 | 928 | XS(XS_Internals_rehash_seed) |
8e90d776 NC |
929 | { |
930 | /* Using dXSARGS would also have dITEM and dSP, | |
931 | * which define 2 unused local variables. */ | |
932 | dMARK; dAX; | |
008fb0c0 | 933 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 NC |
934 | } |
935 | ||
05619474 NC |
936 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
937 | { | |
938 | dXSARGS; | |
939 | if (SvROK(ST(0))) { | |
940 | HV *hv = (HV *) SvRV(ST(0)); | |
941 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { | |
942 | if (HvREHASH(hv)) | |
943 | XSRETURN_YES; | |
944 | else | |
945 | XSRETURN_NO; | |
946 | } | |
947 | } | |
948 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); | |
949 | } |