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); |
8800c35a | 177 | XS(XS_utf8_is_utf8); |
1b026014 NIS |
178 | XS(XS_utf8_valid); |
179 | XS(XS_utf8_encode); | |
180 | XS(XS_utf8_decode); | |
181 | XS(XS_utf8_upgrade); | |
182 | XS(XS_utf8_downgrade); | |
183 | XS(XS_utf8_unicode_to_native); | |
184 | XS(XS_utf8_native_to_unicode); | |
29569577 JH |
185 | XS(XS_Internals_SvREADONLY); |
186 | XS(XS_Internals_SvREFCNT); | |
f044d0d1 | 187 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 | 188 | XS(XS_PerlIO_get_layers); |
39cff0d9 | 189 | XS(XS_Regexp_DESTROY); |
0cb96387 GS |
190 | |
191 | void | |
192 | Perl_boot_core_UNIVERSAL(pTHX) | |
193 | { | |
194 | char *file = __FILE__; | |
195 | ||
196 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); | |
197 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); | |
198 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); | |
439cb1c4 | 199 | { |
ad63d80f JP |
200 | /* register the overloading (type 'A') magic */ |
201 | PL_amagic_generation++; | |
439cb1c4 | 202 | /* Make it findable via fetchmethod */ |
be2ebcad | 203 | newXS("version::()", XS_version_noop, file); |
439cb1c4 JP |
204 | newXS("version::new", XS_version_new, file); |
205 | newXS("version::(\"\"", XS_version_stringify, file); | |
206 | newXS("version::stringify", XS_version_stringify, file); | |
207 | newXS("version::(0+", XS_version_numify, file); | |
208 | newXS("version::numify", XS_version_numify, file); | |
209 | newXS("version::(cmp", XS_version_vcmp, file); | |
210 | newXS("version::(<=>", XS_version_vcmp, file); | |
211 | newXS("version::vcmp", XS_version_vcmp, file); | |
212 | newXS("version::(bool", XS_version_boolean, file); | |
213 | newXS("version::boolean", XS_version_boolean, file); | |
214 | newXS("version::(nomethod", XS_version_noop, file); | |
215 | newXS("version::noop", XS_version_noop, file); | |
c8d69e4a | 216 | newXS("version::is_alpha", XS_version_is_alpha, file); |
439cb1c4 | 217 | } |
8800c35a | 218 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 NIS |
219 | newXS("utf8::valid", XS_utf8_valid, file); |
220 | newXS("utf8::encode", XS_utf8_encode, file); | |
221 | newXS("utf8::decode", XS_utf8_decode, file); | |
222 | newXS("utf8::upgrade", XS_utf8_upgrade, file); | |
223 | newXS("utf8::downgrade", XS_utf8_downgrade, file); | |
224 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); | |
225 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); | |
29569577 JH |
226 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
227 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); | |
dfd4ef2f | 228 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 | 229 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce JH |
230 | newXSproto("PerlIO::get_layers", |
231 | XS_PerlIO_get_layers, file, "*;@"); | |
39cff0d9 | 232 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
0cb96387 GS |
233 | } |
234 | ||
55497cff | 235 | |
6d4a7be2 | 236 | XS(XS_UNIVERSAL_isa) |
237 | { | |
238 | dXSARGS; | |
55497cff | 239 | SV *sv; |
240 | char *name; | |
2d8e6c8d | 241 | STRLEN n_a; |
6d4a7be2 | 242 | |
243 | if (items != 2) | |
cea2e8a9 | 244 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 | 245 | |
246 | sv = ST(0); | |
f8f70380 | 247 | |
d3f7f2b2 GS |
248 | if (SvGMAGICAL(sv)) |
249 | mg_get(sv); | |
250 | ||
253ecd6d RGS |
251 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
252 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
253 | XSRETURN_UNDEF; |
254 | ||
2d8e6c8d | 255 | name = (char *)SvPV(ST(1),n_a); |
6d4a7be2 | 256 | |
54310121 | 257 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 | 258 | XSRETURN(1); |
259 | } | |
260 | ||
6d4a7be2 | 261 | XS(XS_UNIVERSAL_can) |
262 | { | |
263 | dXSARGS; | |
264 | SV *sv; | |
265 | char *name; | |
266 | SV *rv; | |
6f08146e | 267 | HV *pkg = NULL; |
2d8e6c8d | 268 | STRLEN n_a; |
6d4a7be2 | 269 | |
270 | if (items != 2) | |
cea2e8a9 | 271 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 | 272 | |
273 | sv = ST(0); | |
f8f70380 | 274 | |
d3f7f2b2 GS |
275 | if (SvGMAGICAL(sv)) |
276 | mg_get(sv); | |
277 | ||
253ecd6d RGS |
278 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
279 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
280 | XSRETURN_UNDEF; |
281 | ||
2d8e6c8d | 282 | name = (char *)SvPV(ST(1),n_a); |
3280af22 | 283 | rv = &PL_sv_undef; |
6d4a7be2 | 284 | |
46e4b22b | 285 | if (SvROK(sv)) { |
6f08146e | 286 | sv = (SV*)SvRV(sv); |
46e4b22b | 287 | if (SvOBJECT(sv)) |
6f08146e NIS |
288 | pkg = SvSTASH(sv); |
289 | } | |
290 | else { | |
291 | pkg = gv_stashsv(sv, FALSE); | |
292 | } | |
293 | ||
294 | if (pkg) { | |
dc848c6f | 295 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
296 | if (gv && isGV(gv)) | |
297 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); | |
6d4a7be2 | 298 | } |
299 | ||
300 | ST(0) = rv; | |
301 | XSRETURN(1); | |
302 | } | |
303 | ||
6d4a7be2 | 304 | XS(XS_UNIVERSAL_VERSION) |
305 | { | |
306 | dXSARGS; | |
307 | HV *pkg; | |
308 | GV **gvp; | |
309 | GV *gv; | |
310 | SV *sv; | |
311 | char *undef; | |
312 | ||
1571675a | 313 | if (SvROK(ST(0))) { |
6d4a7be2 | 314 | sv = (SV*)SvRV(ST(0)); |
1571675a | 315 | if (!SvOBJECT(sv)) |
cea2e8a9 | 316 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 | 317 | pkg = SvSTASH(sv); |
318 | } | |
319 | else { | |
320 | pkg = gv_stashsv(ST(0), FALSE); | |
321 | } | |
322 | ||
323 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); | |
324 | ||
d4bea2fb | 325 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 | 326 | SV *nsv = sv_newmortal(); |
327 | sv_setsv(nsv, sv); | |
328 | sv = nsv; | |
329 | undef = Nullch; | |
330 | } | |
331 | else { | |
3280af22 | 332 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 | 333 | undef = "(undef)"; |
334 | } | |
335 | ||
1571675a GS |
336 | if (items > 1) { |
337 | STRLEN len; | |
338 | SV *req = ST(1); | |
339 | ||
62658f4d PM |
340 | if (undef) { |
341 | if (pkg) | |
342 | Perl_croak(aTHX_ | |
343 | "%s does not define $%s::VERSION--version check failed", | |
344 | HvNAME(pkg), HvNAME(pkg)); | |
345 | else { | |
346 | char *str = SvPVx(ST(0), len); | |
347 | ||
348 | Perl_croak(aTHX_ | |
349 | "%s defines neither package nor VERSION--version check failed", str); | |
350 | } | |
351 | } | |
ad63d80f JP |
352 | if ( !sv_derived_from(sv, "version")) |
353 | sv = new_version(sv); | |
354 | ||
355 | if ( !sv_derived_from(req, "version")) | |
356 | req = new_version(req); | |
1571675a | 357 | |
ad63d80f | 358 | if ( vcmp( SvRV(req), SvRV(sv) ) > 0 ) |
e3feee4e RB |
359 | Perl_croak(aTHX_ |
360 | "%s version %"SVf" required--this is only version %"SVf, | |
0773b1f0 | 361 | HvNAME(pkg), req, sv); |
2d8e6c8d | 362 | } |
6d4a7be2 | 363 | |
364 | ST(0) = sv; | |
365 | ||
366 | XSRETURN(1); | |
367 | } | |
368 | ||
439cb1c4 JP |
369 | XS(XS_version_new) |
370 | { | |
371 | dXSARGS; | |
129318bd | 372 | if (items > 3) |
439cb1c4 JP |
373 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
374 | SP -= items; | |
375 | { | |
376 | /* char * class = (char *)SvPV_nolen(ST(0)); */ | |
129318bd JP |
377 | SV *version = ST(1); |
378 | if (items == 3 ) | |
379 | { | |
380 | char *vs = savepvn(SvPVX(ST(2)),SvCUR(ST(2))); | |
9be22fdc | 381 | version = Perl_newSVpvf(aTHX_ "v%s",vs); |
129318bd | 382 | } |
439cb1c4 | 383 | |
129318bd | 384 | PUSHs(new_version(version)); |
439cb1c4 JP |
385 | PUTBACK; |
386 | return; | |
387 | } | |
388 | } | |
389 | ||
390 | XS(XS_version_stringify) | |
391 | { | |
41be1fbd JH |
392 | dXSARGS; |
393 | if (items < 1) | |
394 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
395 | SP -= items; | |
396 | { | |
397 | SV * lobj; | |
398 | ||
399 | if (sv_derived_from(ST(0), "version")) { | |
400 | SV *tmp = SvRV(ST(0)); | |
401 | lobj = tmp; | |
402 | } | |
403 | else | |
404 | Perl_croak(aTHX_ "lobj is not of type version"); | |
405 | ||
406 | { | |
407 | PUSHs(vstringify(lobj)); | |
408 | } | |
409 | ||
410 | PUTBACK; | |
411 | return; | |
412 | } | |
439cb1c4 JP |
413 | } |
414 | ||
415 | XS(XS_version_numify) | |
416 | { | |
41be1fbd JH |
417 | dXSARGS; |
418 | if (items < 1) | |
419 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
420 | SP -= items; | |
421 | { | |
422 | SV * lobj; | |
423 | ||
424 | if (sv_derived_from(ST(0), "version")) { | |
425 | SV *tmp = SvRV(ST(0)); | |
426 | lobj = tmp; | |
427 | } | |
428 | else | |
429 | Perl_croak(aTHX_ "lobj is not of type version"); | |
430 | ||
431 | { | |
432 | PUSHs(vnumify(lobj)); | |
433 | } | |
434 | ||
435 | PUTBACK; | |
436 | return; | |
437 | } | |
439cb1c4 JP |
438 | } |
439 | ||
440 | XS(XS_version_vcmp) | |
441 | { | |
41be1fbd JH |
442 | dXSARGS; |
443 | if (items < 1) | |
444 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
445 | SP -= items; | |
446 | { | |
447 | SV * lobj; | |
448 | ||
449 | if (sv_derived_from(ST(0), "version")) { | |
450 | SV *tmp = SvRV(ST(0)); | |
451 | lobj = tmp; | |
452 | } | |
453 | else | |
454 | Perl_croak(aTHX_ "lobj is not of type version"); | |
455 | ||
456 | { | |
457 | SV *rs; | |
458 | SV *rvs; | |
459 | SV * robj = ST(1); | |
460 | IV swap = (IV)SvIV(ST(2)); | |
461 | ||
462 | if ( ! sv_derived_from(robj, "version") ) | |
463 | { | |
464 | robj = new_version(robj); | |
465 | } | |
466 | rvs = SvRV(robj); | |
467 | ||
468 | if ( swap ) | |
469 | { | |
470 | rs = newSViv(vcmp(rvs,lobj)); | |
471 | } | |
472 | else | |
473 | { | |
474 | rs = newSViv(vcmp(lobj,rvs)); | |
475 | } | |
476 | ||
477 | PUSHs(rs); | |
478 | } | |
479 | ||
480 | PUTBACK; | |
481 | return; | |
482 | } | |
439cb1c4 JP |
483 | } |
484 | ||
485 | XS(XS_version_boolean) | |
486 | { | |
41be1fbd JH |
487 | dXSARGS; |
488 | if (items < 1) | |
489 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
490 | SP -= items; | |
491 | { | |
492 | SV * lobj; | |
493 | ||
494 | if (sv_derived_from(ST(0), "version")) { | |
495 | SV *tmp = SvRV(ST(0)); | |
496 | lobj = tmp; | |
497 | } | |
498 | else | |
499 | Perl_croak(aTHX_ "lobj is not of type version"); | |
500 | ||
501 | { | |
502 | SV *rs; | |
503 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); | |
504 | PUSHs(rs); | |
505 | } | |
506 | ||
507 | PUTBACK; | |
508 | return; | |
509 | } | |
439cb1c4 JP |
510 | } |
511 | ||
512 | XS(XS_version_noop) | |
513 | { | |
41be1fbd JH |
514 | dXSARGS; |
515 | if (items < 1) | |
516 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); | |
517 | { | |
518 | SV * lobj; | |
519 | ||
520 | if (sv_derived_from(ST(0), "version")) { | |
521 | SV *tmp = SvRV(ST(0)); | |
522 | lobj = tmp; | |
523 | } | |
524 | else | |
525 | Perl_croak(aTHX_ "lobj is not of type version"); | |
526 | ||
527 | { | |
528 | Perl_croak(aTHX_ "operation not supported with version object"); | |
529 | } | |
530 | ||
531 | } | |
532 | XSRETURN_EMPTY; | |
439cb1c4 JP |
533 | } |
534 | ||
c8d69e4a JP |
535 | XS(XS_version_is_alpha) |
536 | { | |
537 | dXSARGS; | |
538 | if (items != 1) | |
539 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); | |
540 | SP -= items; | |
541 | { | |
542 | SV *lobj; | |
543 | ||
544 | if (sv_derived_from(ST(0), "version")) { | |
545 | SV *tmp = SvRV(ST(0)); | |
546 | lobj = tmp; | |
547 | } | |
548 | else | |
549 | Perl_croak(aTHX_ "lobj is not of type version"); | |
550 | { | |
551 | I32 len = av_len((AV *)lobj); | |
552 | I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); | |
553 | if ( digit < 0 ) | |
554 | XSRETURN_YES; | |
555 | else | |
556 | XSRETURN_NO; | |
557 | } | |
558 | PUTBACK; | |
559 | return; | |
560 | } | |
561 | } | |
562 | ||
8800c35a JH |
563 | XS(XS_utf8_is_utf8) |
564 | { | |
41be1fbd JH |
565 | dXSARGS; |
566 | if (items != 1) | |
567 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
568 | { | |
569 | SV * sv = ST(0); | |
570 | { | |
571 | if (SvUTF8(sv)) | |
572 | XSRETURN_YES; | |
573 | else | |
574 | XSRETURN_NO; | |
575 | } | |
576 | } | |
577 | XSRETURN_EMPTY; | |
8800c35a JH |
578 | } |
579 | ||
1b026014 NIS |
580 | XS(XS_utf8_valid) |
581 | { | |
41be1fbd JH |
582 | dXSARGS; |
583 | if (items != 1) | |
584 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
585 | { | |
586 | SV * sv = ST(0); | |
587 | { | |
588 | STRLEN len; | |
589 | char *s = SvPV(sv,len); | |
590 | if (!SvUTF8(sv) || is_utf8_string((U8*)s,len)) | |
591 | XSRETURN_YES; | |
592 | else | |
593 | XSRETURN_NO; | |
594 | } | |
595 | } | |
596 | XSRETURN_EMPTY; | |
1b026014 NIS |
597 | } |
598 | ||
599 | XS(XS_utf8_encode) | |
600 | { | |
601 | dXSARGS; | |
602 | if (items != 1) | |
603 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); | |
604 | { | |
605 | SV * sv = ST(0); | |
606 | ||
607 | sv_utf8_encode(sv); | |
608 | } | |
609 | XSRETURN_EMPTY; | |
610 | } | |
611 | ||
612 | XS(XS_utf8_decode) | |
613 | { | |
614 | dXSARGS; | |
615 | if (items != 1) | |
616 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); | |
617 | { | |
618 | SV * sv = ST(0); | |
619 | bool RETVAL; | |
620 | ||
621 | RETVAL = sv_utf8_decode(sv); | |
622 | ST(0) = boolSV(RETVAL); | |
623 | sv_2mortal(ST(0)); | |
624 | } | |
625 | XSRETURN(1); | |
626 | } | |
627 | ||
628 | XS(XS_utf8_upgrade) | |
629 | { | |
630 | dXSARGS; | |
631 | if (items != 1) | |
632 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); | |
633 | { | |
634 | SV * sv = ST(0); | |
635 | STRLEN RETVAL; | |
636 | dXSTARG; | |
637 | ||
638 | RETVAL = sv_utf8_upgrade(sv); | |
639 | XSprePUSH; PUSHi((IV)RETVAL); | |
640 | } | |
641 | XSRETURN(1); | |
642 | } | |
643 | ||
644 | XS(XS_utf8_downgrade) | |
645 | { | |
646 | dXSARGS; | |
647 | if (items < 1 || items > 2) | |
648 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); | |
649 | { | |
650 | SV * sv = ST(0); | |
651 | bool failok; | |
652 | bool RETVAL; | |
653 | ||
654 | if (items < 2) | |
655 | failok = 0; | |
656 | else { | |
657 | failok = (int)SvIV(ST(1)); | |
658 | } | |
659 | ||
660 | RETVAL = sv_utf8_downgrade(sv, failok); | |
661 | ST(0) = boolSV(RETVAL); | |
662 | sv_2mortal(ST(0)); | |
663 | } | |
664 | XSRETURN(1); | |
665 | } | |
666 | ||
667 | XS(XS_utf8_native_to_unicode) | |
668 | { | |
669 | dXSARGS; | |
670 | UV uv = SvUV(ST(0)); | |
b7953727 JH |
671 | |
672 | if (items > 1) | |
673 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
674 | ||
1b026014 NIS |
675 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
676 | XSRETURN(1); | |
677 | } | |
678 | ||
679 | XS(XS_utf8_unicode_to_native) | |
680 | { | |
681 | dXSARGS; | |
682 | UV uv = SvUV(ST(0)); | |
b7953727 JH |
683 | |
684 | if (items > 1) | |
685 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
686 | ||
1b026014 NIS |
687 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
688 | XSRETURN(1); | |
689 | } | |
690 | ||
14a976d6 | 691 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 JH |
692 | { |
693 | dXSARGS; | |
694 | SV *sv = SvRV(ST(0)); | |
695 | if (items == 1) { | |
696 | if (SvREADONLY(sv)) | |
697 | XSRETURN_YES; | |
698 | else | |
699 | XSRETURN_NO; | |
700 | } | |
701 | else if (items == 2) { | |
702 | if (SvTRUE(ST(1))) { | |
703 | SvREADONLY_on(sv); | |
704 | XSRETURN_YES; | |
705 | } | |
706 | else { | |
14a976d6 | 707 | /* I hope you really know what you are doing. */ |
29569577 JH |
708 | SvREADONLY_off(sv); |
709 | XSRETURN_NO; | |
710 | } | |
711 | } | |
14a976d6 | 712 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
713 | } |
714 | ||
14a976d6 | 715 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 JH |
716 | { |
717 | dXSARGS; | |
718 | SV *sv = SvRV(ST(0)); | |
719 | if (items == 1) | |
14a976d6 | 720 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 | 721 | else if (items == 2) { |
14a976d6 | 722 | /* I hope you really know what you are doing. */ |
29569577 JH |
723 | SvREFCNT(sv) = SvIV(ST(1)); |
724 | XSRETURN_IV(SvREFCNT(sv)); | |
725 | } | |
14a976d6 | 726 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
727 | } |
728 | ||
dfd4ef2f NC |
729 | /* Maybe this should return the number of placeholders found in scalar context, |
730 | and a list of them in list context. */ | |
f044d0d1 | 731 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f NC |
732 | { |
733 | dXSARGS; | |
734 | HV *hv = (HV *) SvRV(ST(0)); | |
735 | ||
736 | /* I don't care how many parameters were passed in, but I want to avoid | |
737 | the unused variable warning. */ | |
738 | ||
eb160463 | 739 | items = (I32)HvPLACEHOLDERS(hv); |
dfd4ef2f NC |
740 | |
741 | if (items) { | |
742 | HE *entry; | |
743 | I32 riter = HvRITER(hv); | |
744 | HE *eiter = HvEITER(hv); | |
745 | hv_iterinit(hv); | |
fe7bca90 NC |
746 | /* This may look suboptimal with the items *after* the iternext, but |
747 | it's quite deliberate. We only get here with items==0 if we've | |
748 | just deleted the last placeholder in the hash. If we've just done | |
749 | that then it means that the hash is in lazy delete mode, and the | |
750 | HE is now only referenced in our iterator. If we just quit the loop | |
751 | and discarded our iterator then the HE leaks. So we do the && the | |
752 | other way to ensure iternext is called just one more time, which | |
753 | has the side effect of triggering the lazy delete. */ | |
754 | while ((entry = hv_iternext_flags(hv, HV_ITERNEXT_WANTPLACEHOLDERS)) | |
755 | && items) { | |
dfd4ef2f NC |
756 | SV *val = hv_iterval(hv, entry); |
757 | ||
7996736c | 758 | if (val == &PL_sv_placeholder) { |
dfd4ef2f NC |
759 | |
760 | /* It seems that I have to go back in the front of the hash | |
761 | API to delete a hash, even though I have a HE structure | |
762 | pointing to the very entry I want to delete, and could hold | |
763 | onto the previous HE that points to it. And it's easier to | |
764 | go in with SVs as I can then specify the precomputed hash, | |
765 | and don't have fun and games with utf8 keys. */ | |
766 | SV *key = hv_iterkeysv(entry); | |
767 | ||
768 | hv_delete_ent (hv, key, G_DISCARD, HeHASH(entry)); | |
769 | items--; | |
770 | } | |
771 | } | |
772 | HvRITER(hv) = riter; | |
773 | HvEITER(hv) = eiter; | |
774 | } | |
775 | ||
776 | XSRETURN(0); | |
777 | } | |
39f7a870 | 778 | |
39cff0d9 AE |
779 | XS(XS_Regexp_DESTROY) |
780 | { | |
781 | ||
782 | } | |
783 | ||
39f7a870 JH |
784 | XS(XS_PerlIO_get_layers) |
785 | { | |
786 | dXSARGS; | |
787 | if (items < 1 || items % 2 == 0) | |
788 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); | |
5fef3b4a | 789 | #ifdef USE_PERLIO |
39f7a870 JH |
790 | { |
791 | SV * sv; | |
792 | GV * gv; | |
793 | IO * io; | |
794 | bool input = TRUE; | |
795 | bool details = FALSE; | |
796 | ||
797 | if (items > 1) { | |
39f7a870 JH |
798 | SV **svp; |
799 | ||
800 | for (svp = MARK + 2; svp <= SP; svp += 2) { | |
801 | SV **varp = svp; | |
802 | SV **valp = svp + 1; | |
803 | STRLEN klen; | |
804 | char *key = SvPV(*varp, klen); | |
805 | ||
806 | switch (*key) { | |
807 | case 'i': | |
808 | if (klen == 5 && memEQ(key, "input", 5)) { | |
809 | input = SvTRUE(*valp); | |
810 | break; | |
811 | } | |
812 | goto fail; | |
813 | case 'o': | |
814 | if (klen == 6 && memEQ(key, "output", 6)) { | |
815 | input = !SvTRUE(*valp); | |
816 | break; | |
817 | } | |
818 | goto fail; | |
819 | case 'd': | |
820 | if (klen == 7 && memEQ(key, "details", 7)) { | |
821 | details = SvTRUE(*valp); | |
822 | break; | |
823 | } | |
824 | goto fail; | |
825 | default: | |
826 | fail: | |
827 | Perl_croak(aTHX_ | |
828 | "get_layers: unknown argument '%s'", | |
829 | key); | |
830 | } | |
831 | } | |
832 | ||
833 | SP -= (items - 1); | |
834 | } | |
835 | ||
836 | sv = POPs; | |
837 | gv = (GV*)sv; | |
838 | ||
839 | if (!isGV(sv)) { | |
840 | if (SvROK(sv) && isGV(SvRV(sv))) | |
841 | gv = (GV*)SvRV(sv); | |
842 | else | |
843 | gv = gv_fetchpv(SvPVX(sv), FALSE, SVt_PVIO); | |
844 | } | |
845 | ||
846 | if (gv && (io = GvIO(gv))) { | |
847 | dTARGET; | |
848 | AV* av = PerlIO_get_layers(aTHX_ input ? | |
849 | IoIFP(io) : IoOFP(io)); | |
850 | I32 i; | |
851 | I32 last = av_len(av); | |
852 | I32 nitem = 0; | |
853 | ||
854 | for (i = last; i >= 0; i -= 3) { | |
855 | SV **namsvp; | |
856 | SV **argsvp; | |
857 | SV **flgsvp; | |
858 | bool namok, argok, flgok; | |
859 | ||
860 | namsvp = av_fetch(av, i - 2, FALSE); | |
861 | argsvp = av_fetch(av, i - 1, FALSE); | |
862 | flgsvp = av_fetch(av, i, FALSE); | |
863 | ||
864 | namok = namsvp && *namsvp && SvPOK(*namsvp); | |
865 | argok = argsvp && *argsvp && SvPOK(*argsvp); | |
866 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
867 | ||
868 | if (details) { | |
869 | XPUSHs(namok ? | |
870 | newSVpv(SvPVX(*namsvp), 0) : &PL_sv_undef); | |
871 | XPUSHs(argok ? | |
872 | newSVpv(SvPVX(*argsvp), 0) : &PL_sv_undef); | |
873 | if (flgok) | |
874 | XPUSHi(SvIVX(*flgsvp)); | |
875 | else | |
876 | XPUSHs(&PL_sv_undef); | |
877 | nitem += 3; | |
878 | } | |
879 | else { | |
880 | if (namok && argok) | |
881 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", | |
882 | *namsvp, *argsvp)); | |
883 | else if (namok) | |
884 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); | |
885 | else | |
886 | XPUSHs(&PL_sv_undef); | |
887 | nitem++; | |
888 | if (flgok) { | |
889 | IV flags = SvIVX(*flgsvp); | |
890 | ||
891 | if (flags & PERLIO_F_UTF8) { | |
892 | XPUSHs(newSVpvn("utf8", 4)); | |
893 | nitem++; | |
894 | } | |
895 | } | |
896 | } | |
897 | } | |
898 | ||
899 | SvREFCNT_dec(av); | |
900 | ||
901 | XSRETURN(nitem); | |
902 | } | |
903 | } | |
5fef3b4a | 904 | #endif |
39f7a870 JH |
905 | |
906 | XSRETURN(0); | |
907 | } | |
908 |