Commit | Line | Data |
d6376244 |
1 | /* universal.c |
2 | * |
4bb101f2 |
3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4 | * by Larry Wall and others |
d6376244 |
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 |
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 |
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 |
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 |
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 |
48 | if (strEQ(name, "UNIVERSAL")) |
49 | return &PL_sv_yes; |
50 | |
6d4a7be2 |
51 | if (level > 100) |
46e4b22b |
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 |
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 |
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 |
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 |
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 |
105 | "Can't locate package %"SVf" for @%s::ISA", |
106 | sv, HvNAME(stash)); |
6d4a7be2 |
107 | continue; |
108 | } |
301daebc |
109 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
110 | len, level + 1)) { |
3280af22 |
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 |
122 | =head1 SV Manipulation Functions |
123 | |
954c1994 |
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 |
156 | name_stash = gv_stashpv(name, FALSE); |
157 | |
55497cff |
158 | return (type && strEQ(type,name)) || |
301daebc |
159 | (stash && isa_lookup(stash, name, name_stash, strlen(name), 0) |
160 | == &PL_sv_yes) |
55497cff |
161 | ? TRUE |
162 | : FALSE ; |
55497cff |
163 | } |
164 | |
1b026014 |
165 | #include "XSUB.h" |
166 | |
acfe0abc |
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 |
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 |
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 |
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); |
9a7034eb |
190 | XS(XS_Internals_hash_seed); |
008fb0c0 |
191 | XS(XS_Internals_rehash_seed); |
05619474 |
192 | XS(XS_Internals_HvREHASH); |
0cb96387 |
193 | |
194 | void |
195 | Perl_boot_core_UNIVERSAL(pTHX) |
196 | { |
197 | char *file = __FILE__; |
198 | |
199 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
200 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
201 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
439cb1c4 |
202 | { |
ad63d80f |
203 | /* register the overloading (type 'A') magic */ |
204 | PL_amagic_generation++; |
439cb1c4 |
205 | /* Make it findable via fetchmethod */ |
be2ebcad |
206 | newXS("version::()", XS_version_noop, file); |
439cb1c4 |
207 | newXS("version::new", XS_version_new, file); |
208 | newXS("version::(\"\"", XS_version_stringify, file); |
209 | newXS("version::stringify", XS_version_stringify, file); |
210 | newXS("version::(0+", XS_version_numify, file); |
211 | newXS("version::numify", XS_version_numify, file); |
212 | newXS("version::(cmp", XS_version_vcmp, file); |
213 | newXS("version::(<=>", XS_version_vcmp, file); |
214 | newXS("version::vcmp", XS_version_vcmp, file); |
215 | newXS("version::(bool", XS_version_boolean, file); |
216 | newXS("version::boolean", XS_version_boolean, file); |
217 | newXS("version::(nomethod", XS_version_noop, file); |
218 | newXS("version::noop", XS_version_noop, file); |
c8d69e4a |
219 | newXS("version::is_alpha", XS_version_is_alpha, file); |
439cb1c4 |
220 | } |
8800c35a |
221 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 |
222 | newXS("utf8::valid", XS_utf8_valid, file); |
223 | newXS("utf8::encode", XS_utf8_encode, file); |
224 | newXS("utf8::decode", XS_utf8_decode, file); |
225 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
226 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
227 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
228 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
29569577 |
229 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
230 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
dfd4ef2f |
231 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 |
232 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce |
233 | newXSproto("PerlIO::get_layers", |
234 | XS_PerlIO_get_layers, file, "*;@"); |
39cff0d9 |
235 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb |
236 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 |
237 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 |
238 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 |
239 | } |
240 | |
55497cff |
241 | |
6d4a7be2 |
242 | XS(XS_UNIVERSAL_isa) |
243 | { |
244 | dXSARGS; |
55497cff |
245 | SV *sv; |
246 | char *name; |
2d8e6c8d |
247 | STRLEN n_a; |
6d4a7be2 |
248 | |
249 | if (items != 2) |
cea2e8a9 |
250 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 |
251 | |
252 | sv = ST(0); |
f8f70380 |
253 | |
d3f7f2b2 |
254 | if (SvGMAGICAL(sv)) |
255 | mg_get(sv); |
256 | |
253ecd6d |
257 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
258 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
259 | XSRETURN_UNDEF; |
260 | |
2d8e6c8d |
261 | name = (char *)SvPV(ST(1),n_a); |
6d4a7be2 |
262 | |
54310121 |
263 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 |
264 | XSRETURN(1); |
265 | } |
266 | |
6d4a7be2 |
267 | XS(XS_UNIVERSAL_can) |
268 | { |
269 | dXSARGS; |
270 | SV *sv; |
271 | char *name; |
272 | SV *rv; |
6f08146e |
273 | HV *pkg = NULL; |
2d8e6c8d |
274 | STRLEN n_a; |
6d4a7be2 |
275 | |
276 | if (items != 2) |
cea2e8a9 |
277 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
278 | |
279 | sv = ST(0); |
f8f70380 |
280 | |
d3f7f2b2 |
281 | if (SvGMAGICAL(sv)) |
282 | mg_get(sv); |
283 | |
253ecd6d |
284 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
285 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
286 | XSRETURN_UNDEF; |
287 | |
2d8e6c8d |
288 | name = (char *)SvPV(ST(1),n_a); |
3280af22 |
289 | rv = &PL_sv_undef; |
6d4a7be2 |
290 | |
46e4b22b |
291 | if (SvROK(sv)) { |
6f08146e |
292 | sv = (SV*)SvRV(sv); |
46e4b22b |
293 | if (SvOBJECT(sv)) |
6f08146e |
294 | pkg = SvSTASH(sv); |
295 | } |
296 | else { |
297 | pkg = gv_stashsv(sv, FALSE); |
298 | } |
299 | |
300 | if (pkg) { |
dc848c6f |
301 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
302 | if (gv && isGV(gv)) |
303 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); |
6d4a7be2 |
304 | } |
305 | |
306 | ST(0) = rv; |
307 | XSRETURN(1); |
308 | } |
309 | |
6d4a7be2 |
310 | XS(XS_UNIVERSAL_VERSION) |
311 | { |
312 | dXSARGS; |
313 | HV *pkg; |
314 | GV **gvp; |
315 | GV *gv; |
316 | SV *sv; |
317 | char *undef; |
318 | |
1571675a |
319 | if (SvROK(ST(0))) { |
6d4a7be2 |
320 | sv = (SV*)SvRV(ST(0)); |
1571675a |
321 | if (!SvOBJECT(sv)) |
cea2e8a9 |
322 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 |
323 | pkg = SvSTASH(sv); |
324 | } |
325 | else { |
326 | pkg = gv_stashsv(ST(0), FALSE); |
327 | } |
328 | |
329 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); |
330 | |
d4bea2fb |
331 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 |
332 | SV *nsv = sv_newmortal(); |
333 | sv_setsv(nsv, sv); |
334 | sv = nsv; |
335 | undef = Nullch; |
336 | } |
337 | else { |
3280af22 |
338 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 |
339 | undef = "(undef)"; |
340 | } |
341 | |
1571675a |
342 | if (items > 1) { |
343 | STRLEN len; |
344 | SV *req = ST(1); |
345 | |
62658f4d |
346 | if (undef) { |
347 | if (pkg) |
348 | Perl_croak(aTHX_ |
349 | "%s does not define $%s::VERSION--version check failed", |
350 | HvNAME(pkg), HvNAME(pkg)); |
351 | else { |
352 | char *str = SvPVx(ST(0), len); |
353 | |
354 | Perl_croak(aTHX_ |
355 | "%s defines neither package nor VERSION--version check failed", str); |
356 | } |
357 | } |
ad63d80f |
358 | if ( !sv_derived_from(sv, "version")) |
359 | sv = new_version(sv); |
360 | |
361 | if ( !sv_derived_from(req, "version")) |
362 | req = new_version(req); |
1571675a |
363 | |
ad63d80f |
364 | if ( vcmp( SvRV(req), SvRV(sv) ) > 0 ) |
e3feee4e |
365 | Perl_croak(aTHX_ |
366 | "%s version %"SVf" required--this is only version %"SVf, |
0773b1f0 |
367 | HvNAME(pkg), req, sv); |
2d8e6c8d |
368 | } |
6d4a7be2 |
369 | |
370 | ST(0) = sv; |
371 | |
372 | XSRETURN(1); |
373 | } |
374 | |
439cb1c4 |
375 | XS(XS_version_new) |
376 | { |
377 | dXSARGS; |
129318bd |
378 | if (items > 3) |
439cb1c4 |
379 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
380 | SP -= items; |
381 | { |
382 | /* char * class = (char *)SvPV_nolen(ST(0)); */ |
129318bd |
383 | SV *version = ST(1); |
384 | if (items == 3 ) |
385 | { |
386 | char *vs = savepvn(SvPVX(ST(2)),SvCUR(ST(2))); |
9be22fdc |
387 | version = Perl_newSVpvf(aTHX_ "v%s",vs); |
129318bd |
388 | } |
439cb1c4 |
389 | |
129318bd |
390 | PUSHs(new_version(version)); |
439cb1c4 |
391 | PUTBACK; |
392 | return; |
393 | } |
394 | } |
395 | |
396 | XS(XS_version_stringify) |
397 | { |
41be1fbd |
398 | dXSARGS; |
399 | if (items < 1) |
400 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
401 | SP -= items; |
402 | { |
403 | SV * lobj; |
404 | |
405 | if (sv_derived_from(ST(0), "version")) { |
406 | SV *tmp = SvRV(ST(0)); |
407 | lobj = tmp; |
408 | } |
409 | else |
410 | Perl_croak(aTHX_ "lobj is not of type version"); |
411 | |
412 | { |
413 | PUSHs(vstringify(lobj)); |
414 | } |
415 | |
416 | PUTBACK; |
417 | return; |
418 | } |
439cb1c4 |
419 | } |
420 | |
421 | XS(XS_version_numify) |
422 | { |
41be1fbd |
423 | dXSARGS; |
424 | if (items < 1) |
425 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
426 | SP -= items; |
427 | { |
428 | SV * lobj; |
429 | |
430 | if (sv_derived_from(ST(0), "version")) { |
431 | SV *tmp = SvRV(ST(0)); |
432 | lobj = tmp; |
433 | } |
434 | else |
435 | Perl_croak(aTHX_ "lobj is not of type version"); |
436 | |
437 | { |
438 | PUSHs(vnumify(lobj)); |
439 | } |
440 | |
441 | PUTBACK; |
442 | return; |
443 | } |
439cb1c4 |
444 | } |
445 | |
446 | XS(XS_version_vcmp) |
447 | { |
41be1fbd |
448 | dXSARGS; |
449 | if (items < 1) |
450 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
451 | SP -= items; |
452 | { |
453 | SV * lobj; |
454 | |
455 | if (sv_derived_from(ST(0), "version")) { |
456 | SV *tmp = SvRV(ST(0)); |
457 | lobj = tmp; |
458 | } |
459 | else |
460 | Perl_croak(aTHX_ "lobj is not of type version"); |
461 | |
462 | { |
463 | SV *rs; |
464 | SV *rvs; |
465 | SV * robj = ST(1); |
466 | IV swap = (IV)SvIV(ST(2)); |
467 | |
468 | if ( ! sv_derived_from(robj, "version") ) |
469 | { |
470 | robj = new_version(robj); |
471 | } |
472 | rvs = SvRV(robj); |
473 | |
474 | if ( swap ) |
475 | { |
476 | rs = newSViv(vcmp(rvs,lobj)); |
477 | } |
478 | else |
479 | { |
480 | rs = newSViv(vcmp(lobj,rvs)); |
481 | } |
482 | |
483 | PUSHs(rs); |
484 | } |
485 | |
486 | PUTBACK; |
487 | return; |
488 | } |
439cb1c4 |
489 | } |
490 | |
491 | XS(XS_version_boolean) |
492 | { |
41be1fbd |
493 | dXSARGS; |
494 | if (items < 1) |
495 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
496 | SP -= items; |
497 | { |
498 | SV * lobj; |
499 | |
500 | if (sv_derived_from(ST(0), "version")) { |
501 | SV *tmp = SvRV(ST(0)); |
502 | lobj = tmp; |
503 | } |
504 | else |
505 | Perl_croak(aTHX_ "lobj is not of type version"); |
506 | |
507 | { |
508 | SV *rs; |
509 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
510 | PUSHs(rs); |
511 | } |
512 | |
513 | PUTBACK; |
514 | return; |
515 | } |
439cb1c4 |
516 | } |
517 | |
518 | XS(XS_version_noop) |
519 | { |
41be1fbd |
520 | dXSARGS; |
521 | if (items < 1) |
522 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
523 | { |
524 | SV * lobj; |
525 | |
526 | if (sv_derived_from(ST(0), "version")) { |
527 | SV *tmp = SvRV(ST(0)); |
528 | lobj = tmp; |
529 | } |
530 | else |
531 | Perl_croak(aTHX_ "lobj is not of type version"); |
532 | |
533 | { |
534 | Perl_croak(aTHX_ "operation not supported with version object"); |
535 | } |
536 | |
537 | } |
538 | XSRETURN_EMPTY; |
439cb1c4 |
539 | } |
540 | |
c8d69e4a |
541 | XS(XS_version_is_alpha) |
542 | { |
543 | dXSARGS; |
544 | if (items != 1) |
545 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
546 | SP -= items; |
547 | { |
548 | SV *lobj; |
549 | |
550 | if (sv_derived_from(ST(0), "version")) { |
551 | SV *tmp = SvRV(ST(0)); |
552 | lobj = tmp; |
553 | } |
554 | else |
555 | Perl_croak(aTHX_ "lobj is not of type version"); |
556 | { |
557 | I32 len = av_len((AV *)lobj); |
558 | I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); |
559 | if ( digit < 0 ) |
560 | XSRETURN_YES; |
561 | else |
562 | XSRETURN_NO; |
563 | } |
564 | PUTBACK; |
565 | return; |
566 | } |
567 | } |
568 | |
8800c35a |
569 | XS(XS_utf8_is_utf8) |
570 | { |
41be1fbd |
571 | dXSARGS; |
572 | if (items != 1) |
573 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
574 | { |
575 | SV * sv = ST(0); |
576 | { |
577 | if (SvUTF8(sv)) |
578 | XSRETURN_YES; |
579 | else |
580 | XSRETURN_NO; |
581 | } |
582 | } |
583 | XSRETURN_EMPTY; |
8800c35a |
584 | } |
585 | |
1b026014 |
586 | XS(XS_utf8_valid) |
587 | { |
41be1fbd |
588 | dXSARGS; |
589 | if (items != 1) |
590 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
591 | { |
592 | SV * sv = ST(0); |
593 | { |
594 | STRLEN len; |
595 | char *s = SvPV(sv,len); |
596 | if (!SvUTF8(sv) || is_utf8_string((U8*)s,len)) |
597 | XSRETURN_YES; |
598 | else |
599 | XSRETURN_NO; |
600 | } |
601 | } |
602 | XSRETURN_EMPTY; |
1b026014 |
603 | } |
604 | |
605 | XS(XS_utf8_encode) |
606 | { |
607 | dXSARGS; |
608 | if (items != 1) |
609 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
610 | { |
611 | SV * sv = ST(0); |
612 | |
613 | sv_utf8_encode(sv); |
614 | } |
615 | XSRETURN_EMPTY; |
616 | } |
617 | |
618 | XS(XS_utf8_decode) |
619 | { |
620 | dXSARGS; |
621 | if (items != 1) |
622 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
623 | { |
624 | SV * sv = ST(0); |
625 | bool RETVAL; |
626 | |
627 | RETVAL = sv_utf8_decode(sv); |
628 | ST(0) = boolSV(RETVAL); |
629 | sv_2mortal(ST(0)); |
630 | } |
631 | XSRETURN(1); |
632 | } |
633 | |
634 | XS(XS_utf8_upgrade) |
635 | { |
636 | dXSARGS; |
637 | if (items != 1) |
638 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
639 | { |
640 | SV * sv = ST(0); |
641 | STRLEN RETVAL; |
642 | dXSTARG; |
643 | |
644 | RETVAL = sv_utf8_upgrade(sv); |
645 | XSprePUSH; PUSHi((IV)RETVAL); |
646 | } |
647 | XSRETURN(1); |
648 | } |
649 | |
650 | XS(XS_utf8_downgrade) |
651 | { |
652 | dXSARGS; |
653 | if (items < 1 || items > 2) |
654 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
655 | { |
656 | SV * sv = ST(0); |
657 | bool failok; |
658 | bool RETVAL; |
659 | |
660 | if (items < 2) |
661 | failok = 0; |
662 | else { |
663 | failok = (int)SvIV(ST(1)); |
664 | } |
665 | |
666 | RETVAL = sv_utf8_downgrade(sv, failok); |
667 | ST(0) = boolSV(RETVAL); |
668 | sv_2mortal(ST(0)); |
669 | } |
670 | XSRETURN(1); |
671 | } |
672 | |
673 | XS(XS_utf8_native_to_unicode) |
674 | { |
675 | dXSARGS; |
676 | UV uv = SvUV(ST(0)); |
b7953727 |
677 | |
678 | if (items > 1) |
679 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
680 | |
1b026014 |
681 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
682 | XSRETURN(1); |
683 | } |
684 | |
685 | XS(XS_utf8_unicode_to_native) |
686 | { |
687 | dXSARGS; |
688 | UV uv = SvUV(ST(0)); |
b7953727 |
689 | |
690 | if (items > 1) |
691 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
692 | |
1b026014 |
693 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
694 | XSRETURN(1); |
695 | } |
696 | |
14a976d6 |
697 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
698 | { |
699 | dXSARGS; |
700 | SV *sv = SvRV(ST(0)); |
701 | if (items == 1) { |
702 | if (SvREADONLY(sv)) |
703 | XSRETURN_YES; |
704 | else |
705 | XSRETURN_NO; |
706 | } |
707 | else if (items == 2) { |
708 | if (SvTRUE(ST(1))) { |
709 | SvREADONLY_on(sv); |
710 | XSRETURN_YES; |
711 | } |
712 | else { |
14a976d6 |
713 | /* I hope you really know what you are doing. */ |
29569577 |
714 | SvREADONLY_off(sv); |
715 | XSRETURN_NO; |
716 | } |
717 | } |
14a976d6 |
718 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
719 | } |
720 | |
14a976d6 |
721 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
722 | { |
723 | dXSARGS; |
724 | SV *sv = SvRV(ST(0)); |
725 | if (items == 1) |
14a976d6 |
726 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
727 | else if (items == 2) { |
14a976d6 |
728 | /* I hope you really know what you are doing. */ |
29569577 |
729 | SvREFCNT(sv) = SvIV(ST(1)); |
730 | XSRETURN_IV(SvREFCNT(sv)); |
731 | } |
14a976d6 |
732 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
733 | } |
734 | |
f044d0d1 |
735 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
736 | { |
737 | dXSARGS; |
738 | HV *hv = (HV *) SvRV(ST(0)); |
3540d4ce |
739 | if (items != 1) |
740 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
741 | hv_clear_placeholders(hv); |
dfd4ef2f |
742 | XSRETURN(0); |
743 | } |
39f7a870 |
744 | |
39cff0d9 |
745 | XS(XS_Regexp_DESTROY) |
746 | { |
747 | |
748 | } |
749 | |
39f7a870 |
750 | XS(XS_PerlIO_get_layers) |
751 | { |
752 | dXSARGS; |
753 | if (items < 1 || items % 2 == 0) |
754 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
755 | #ifdef USE_PERLIO |
39f7a870 |
756 | { |
757 | SV * sv; |
758 | GV * gv; |
759 | IO * io; |
760 | bool input = TRUE; |
761 | bool details = FALSE; |
762 | |
763 | if (items > 1) { |
39f7a870 |
764 | SV **svp; |
765 | |
766 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
767 | SV **varp = svp; |
768 | SV **valp = svp + 1; |
769 | STRLEN klen; |
770 | char *key = SvPV(*varp, klen); |
771 | |
772 | switch (*key) { |
773 | case 'i': |
774 | if (klen == 5 && memEQ(key, "input", 5)) { |
775 | input = SvTRUE(*valp); |
776 | break; |
777 | } |
778 | goto fail; |
779 | case 'o': |
780 | if (klen == 6 && memEQ(key, "output", 6)) { |
781 | input = !SvTRUE(*valp); |
782 | break; |
783 | } |
784 | goto fail; |
785 | case 'd': |
786 | if (klen == 7 && memEQ(key, "details", 7)) { |
787 | details = SvTRUE(*valp); |
788 | break; |
789 | } |
790 | goto fail; |
791 | default: |
792 | fail: |
793 | Perl_croak(aTHX_ |
794 | "get_layers: unknown argument '%s'", |
795 | key); |
796 | } |
797 | } |
798 | |
799 | SP -= (items - 1); |
800 | } |
801 | |
802 | sv = POPs; |
803 | gv = (GV*)sv; |
804 | |
805 | if (!isGV(sv)) { |
806 | if (SvROK(sv) && isGV(SvRV(sv))) |
807 | gv = (GV*)SvRV(sv); |
808 | else |
809 | gv = gv_fetchpv(SvPVX(sv), FALSE, SVt_PVIO); |
810 | } |
811 | |
812 | if (gv && (io = GvIO(gv))) { |
813 | dTARGET; |
814 | AV* av = PerlIO_get_layers(aTHX_ input ? |
815 | IoIFP(io) : IoOFP(io)); |
816 | I32 i; |
817 | I32 last = av_len(av); |
818 | I32 nitem = 0; |
819 | |
820 | for (i = last; i >= 0; i -= 3) { |
821 | SV **namsvp; |
822 | SV **argsvp; |
823 | SV **flgsvp; |
824 | bool namok, argok, flgok; |
825 | |
826 | namsvp = av_fetch(av, i - 2, FALSE); |
827 | argsvp = av_fetch(av, i - 1, FALSE); |
828 | flgsvp = av_fetch(av, i, FALSE); |
829 | |
830 | namok = namsvp && *namsvp && SvPOK(*namsvp); |
831 | argok = argsvp && *argsvp && SvPOK(*argsvp); |
832 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
833 | |
834 | if (details) { |
835 | XPUSHs(namok ? |
836 | newSVpv(SvPVX(*namsvp), 0) : &PL_sv_undef); |
837 | XPUSHs(argok ? |
838 | newSVpv(SvPVX(*argsvp), 0) : &PL_sv_undef); |
839 | if (flgok) |
840 | XPUSHi(SvIVX(*flgsvp)); |
841 | else |
842 | XPUSHs(&PL_sv_undef); |
843 | nitem += 3; |
844 | } |
845 | else { |
846 | if (namok && argok) |
847 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
848 | *namsvp, *argsvp)); |
849 | else if (namok) |
850 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
851 | else |
852 | XPUSHs(&PL_sv_undef); |
853 | nitem++; |
854 | if (flgok) { |
855 | IV flags = SvIVX(*flgsvp); |
856 | |
857 | if (flags & PERLIO_F_UTF8) { |
858 | XPUSHs(newSVpvn("utf8", 4)); |
859 | nitem++; |
860 | } |
861 | } |
862 | } |
863 | } |
864 | |
865 | SvREFCNT_dec(av); |
866 | |
867 | XSRETURN(nitem); |
868 | } |
869 | } |
5fef3b4a |
870 | #endif |
39f7a870 |
871 | |
872 | XSRETURN(0); |
873 | } |
874 | |
9a7034eb |
875 | XS(XS_Internals_hash_seed) |
c910b28a |
876 | { |
c85d3f85 |
877 | /* Using dXSARGS would also have dITEM and dSP, |
878 | * which define 2 unused local variables. */ |
879 | dMARK; dAX; |
81eaca17 |
880 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
881 | } |
882 | |
008fb0c0 |
883 | XS(XS_Internals_rehash_seed) |
8e90d776 |
884 | { |
885 | /* Using dXSARGS would also have dITEM and dSP, |
886 | * which define 2 unused local variables. */ |
887 | dMARK; dAX; |
008fb0c0 |
888 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
889 | } |
890 | |
05619474 |
891 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
892 | { |
893 | dXSARGS; |
894 | if (SvROK(ST(0))) { |
895 | HV *hv = (HV *) SvRV(ST(0)); |
896 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
897 | if (HvREHASH(hv)) |
898 | XSRETURN_YES; |
899 | else |
900 | XSRETURN_NO; |
901 | } |
902 | } |
903 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
904 | } |