Commit | Line | Data |
d6376244 |
1 | /* universal.c |
2 | * |
b5f8cc5c |
3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
4bb101f2 |
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); |
137d6fc0 |
177 | XS(XS_version_qv); |
8800c35a |
178 | XS(XS_utf8_is_utf8); |
1b026014 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
256 | if (SvGMAGICAL(sv)) |
257 | mg_get(sv); |
258 | |
253ecd6d |
259 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
260 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
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 |
283 | if (SvGMAGICAL(sv)) |
284 | mg_get(sv); |
285 | |
253ecd6d |
286 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
287 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
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 |
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 |
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 |
346 | if (items > 1) { |
347 | STRLEN len; |
348 | SV *req = ST(1); |
349 | |
62658f4d |
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 |
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 ) |
b9381830 |
372 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
373 | "this is only version %"SVf" (%"SVf")", HvNAME(pkg), |
374 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d |
375 | } |
6d4a7be2 |
376 | |
2b140d5b |
377 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 |
378 | ST(0) = vnumify(sv); |
13f8f398 |
379 | } else { |
380 | ST(0) = sv; |
b38a9dc5 |
381 | } |
6d4a7be2 |
382 | |
383 | XSRETURN(1); |
384 | } |
385 | |
439cb1c4 |
386 | XS(XS_version_new) |
387 | { |
388 | dXSARGS; |
129318bd |
389 | if (items > 3) |
439cb1c4 |
390 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
391 | SP -= items; |
392 | { |
137d6fc0 |
393 | char * class = (char *)SvPV_nolen(ST(0)); |
394 | SV *vs = ST(1); |
395 | SV *rv; |
129318bd |
396 | if (items == 3 ) |
397 | { |
137d6fc0 |
398 | vs = sv_newmortal(); |
399 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen(ST(2))); |
129318bd |
400 | } |
439cb1c4 |
401 | |
137d6fc0 |
402 | rv = new_version(vs); |
403 | if ( strcmp(class,"version") != 0 ) /* inherited new() */ |
404 | sv_bless(rv, gv_stashpv(class,TRUE)); |
405 | |
406 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
407 | PUTBACK; |
408 | return; |
409 | } |
410 | } |
411 | |
412 | XS(XS_version_stringify) |
413 | { |
41be1fbd |
414 | dXSARGS; |
415 | if (items < 1) |
416 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
417 | SP -= items; |
418 | { |
419 | SV * lobj; |
420 | |
421 | if (sv_derived_from(ST(0), "version")) { |
422 | SV *tmp = SvRV(ST(0)); |
423 | lobj = tmp; |
424 | } |
425 | else |
426 | Perl_croak(aTHX_ "lobj is not of type version"); |
427 | |
137d6fc0 |
428 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
429 | |
430 | PUTBACK; |
431 | return; |
432 | } |
439cb1c4 |
433 | } |
434 | |
435 | XS(XS_version_numify) |
436 | { |
41be1fbd |
437 | dXSARGS; |
438 | if (items < 1) |
439 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
440 | SP -= items; |
441 | { |
442 | SV * lobj; |
443 | |
444 | if (sv_derived_from(ST(0), "version")) { |
445 | SV *tmp = SvRV(ST(0)); |
446 | lobj = tmp; |
447 | } |
448 | else |
449 | Perl_croak(aTHX_ "lobj is not of type version"); |
450 | |
137d6fc0 |
451 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
452 | |
453 | PUTBACK; |
454 | return; |
455 | } |
439cb1c4 |
456 | } |
457 | |
458 | XS(XS_version_vcmp) |
459 | { |
41be1fbd |
460 | dXSARGS; |
461 | if (items < 1) |
462 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
463 | SP -= items; |
464 | { |
465 | SV * lobj; |
466 | |
467 | if (sv_derived_from(ST(0), "version")) { |
468 | SV *tmp = SvRV(ST(0)); |
469 | lobj = tmp; |
470 | } |
471 | else |
472 | Perl_croak(aTHX_ "lobj is not of type version"); |
473 | |
474 | { |
475 | SV *rs; |
476 | SV *rvs; |
477 | SV * robj = ST(1); |
478 | IV swap = (IV)SvIV(ST(2)); |
479 | |
480 | if ( ! sv_derived_from(robj, "version") ) |
481 | { |
482 | robj = new_version(robj); |
483 | } |
484 | rvs = SvRV(robj); |
485 | |
486 | if ( swap ) |
487 | { |
488 | rs = newSViv(vcmp(rvs,lobj)); |
489 | } |
490 | else |
491 | { |
492 | rs = newSViv(vcmp(lobj,rvs)); |
493 | } |
494 | |
137d6fc0 |
495 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
496 | } |
497 | |
498 | PUTBACK; |
499 | return; |
500 | } |
439cb1c4 |
501 | } |
502 | |
503 | XS(XS_version_boolean) |
504 | { |
41be1fbd |
505 | dXSARGS; |
506 | if (items < 1) |
507 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
508 | SP -= items; |
509 | { |
510 | SV * lobj; |
511 | |
512 | if (sv_derived_from(ST(0), "version")) { |
513 | SV *tmp = SvRV(ST(0)); |
514 | lobj = tmp; |
515 | } |
516 | else |
517 | Perl_croak(aTHX_ "lobj is not of type version"); |
518 | |
519 | { |
520 | SV *rs; |
521 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
137d6fc0 |
522 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
523 | } |
524 | |
525 | PUTBACK; |
526 | return; |
527 | } |
439cb1c4 |
528 | } |
529 | |
530 | XS(XS_version_noop) |
531 | { |
41be1fbd |
532 | dXSARGS; |
533 | if (items < 1) |
534 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
535 | { |
536 | SV * lobj; |
537 | |
538 | if (sv_derived_from(ST(0), "version")) { |
539 | SV *tmp = SvRV(ST(0)); |
540 | lobj = tmp; |
541 | } |
542 | else |
543 | Perl_croak(aTHX_ "lobj is not of type version"); |
544 | |
545 | { |
546 | Perl_croak(aTHX_ "operation not supported with version object"); |
547 | } |
548 | |
549 | } |
550 | XSRETURN_EMPTY; |
439cb1c4 |
551 | } |
552 | |
c8d69e4a |
553 | XS(XS_version_is_alpha) |
554 | { |
555 | dXSARGS; |
556 | if (items != 1) |
557 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
558 | SP -= items; |
559 | { |
560 | SV *lobj; |
561 | |
562 | if (sv_derived_from(ST(0), "version")) { |
563 | SV *tmp = SvRV(ST(0)); |
564 | lobj = tmp; |
565 | } |
566 | else |
567 | Perl_croak(aTHX_ "lobj is not of type version"); |
568 | { |
569 | I32 len = av_len((AV *)lobj); |
570 | I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); |
571 | if ( digit < 0 ) |
572 | XSRETURN_YES; |
573 | else |
574 | XSRETURN_NO; |
575 | } |
576 | PUTBACK; |
577 | return; |
578 | } |
579 | } |
580 | |
137d6fc0 |
581 | XS(XS_version_qv) |
582 | { |
583 | dXSARGS; |
584 | if (items != 1) |
585 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
586 | SP -= items; |
587 | { |
588 | SV * ver = ST(0); |
589 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ |
590 | { |
591 | SV *vs = sv_newmortal(); |
592 | char *version; |
593 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
594 | { |
595 | char tbuf[64]; |
596 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
597 | version = savepv(tbuf); |
598 | } |
599 | else |
600 | { |
601 | version = savepv(SvPV_nolen(ver)); |
602 | } |
603 | (void)scan_version(version,vs,TRUE); |
604 | Safefree(version); |
605 | |
606 | PUSHs(vs); |
607 | } |
608 | else |
609 | { |
610 | PUSHs(sv_2mortal(new_version(ver))); |
611 | } |
612 | |
613 | PUTBACK; |
614 | return; |
615 | } |
616 | } |
617 | |
8800c35a |
618 | XS(XS_utf8_is_utf8) |
619 | { |
41be1fbd |
620 | dXSARGS; |
621 | if (items != 1) |
622 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
623 | { |
624 | SV * sv = ST(0); |
625 | { |
626 | if (SvUTF8(sv)) |
627 | XSRETURN_YES; |
628 | else |
629 | XSRETURN_NO; |
630 | } |
631 | } |
632 | XSRETURN_EMPTY; |
8800c35a |
633 | } |
634 | |
1b026014 |
635 | XS(XS_utf8_valid) |
636 | { |
41be1fbd |
637 | dXSARGS; |
638 | if (items != 1) |
639 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
640 | { |
641 | SV * sv = ST(0); |
642 | { |
643 | STRLEN len; |
644 | char *s = SvPV(sv,len); |
645 | if (!SvUTF8(sv) || is_utf8_string((U8*)s,len)) |
646 | XSRETURN_YES; |
647 | else |
648 | XSRETURN_NO; |
649 | } |
650 | } |
651 | XSRETURN_EMPTY; |
1b026014 |
652 | } |
653 | |
654 | XS(XS_utf8_encode) |
655 | { |
656 | dXSARGS; |
657 | if (items != 1) |
658 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
659 | { |
660 | SV * sv = ST(0); |
661 | |
662 | sv_utf8_encode(sv); |
663 | } |
664 | XSRETURN_EMPTY; |
665 | } |
666 | |
667 | XS(XS_utf8_decode) |
668 | { |
669 | dXSARGS; |
670 | if (items != 1) |
671 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
672 | { |
673 | SV * sv = ST(0); |
674 | bool RETVAL; |
675 | |
676 | RETVAL = sv_utf8_decode(sv); |
677 | ST(0) = boolSV(RETVAL); |
678 | sv_2mortal(ST(0)); |
679 | } |
680 | XSRETURN(1); |
681 | } |
682 | |
683 | XS(XS_utf8_upgrade) |
684 | { |
685 | dXSARGS; |
686 | if (items != 1) |
687 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
688 | { |
689 | SV * sv = ST(0); |
690 | STRLEN RETVAL; |
691 | dXSTARG; |
692 | |
693 | RETVAL = sv_utf8_upgrade(sv); |
694 | XSprePUSH; PUSHi((IV)RETVAL); |
695 | } |
696 | XSRETURN(1); |
697 | } |
698 | |
699 | XS(XS_utf8_downgrade) |
700 | { |
701 | dXSARGS; |
702 | if (items < 1 || items > 2) |
703 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
704 | { |
705 | SV * sv = ST(0); |
706 | bool failok; |
707 | bool RETVAL; |
708 | |
709 | if (items < 2) |
710 | failok = 0; |
711 | else { |
712 | failok = (int)SvIV(ST(1)); |
713 | } |
714 | |
715 | RETVAL = sv_utf8_downgrade(sv, failok); |
716 | ST(0) = boolSV(RETVAL); |
717 | sv_2mortal(ST(0)); |
718 | } |
719 | XSRETURN(1); |
720 | } |
721 | |
722 | XS(XS_utf8_native_to_unicode) |
723 | { |
724 | dXSARGS; |
725 | UV uv = SvUV(ST(0)); |
b7953727 |
726 | |
727 | if (items > 1) |
728 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
729 | |
1b026014 |
730 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
731 | XSRETURN(1); |
732 | } |
733 | |
734 | XS(XS_utf8_unicode_to_native) |
735 | { |
736 | dXSARGS; |
737 | UV uv = SvUV(ST(0)); |
b7953727 |
738 | |
739 | if (items > 1) |
740 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
741 | |
1b026014 |
742 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
743 | XSRETURN(1); |
744 | } |
745 | |
14a976d6 |
746 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
747 | { |
748 | dXSARGS; |
749 | SV *sv = SvRV(ST(0)); |
750 | if (items == 1) { |
751 | if (SvREADONLY(sv)) |
752 | XSRETURN_YES; |
753 | else |
754 | XSRETURN_NO; |
755 | } |
756 | else if (items == 2) { |
757 | if (SvTRUE(ST(1))) { |
758 | SvREADONLY_on(sv); |
759 | XSRETURN_YES; |
760 | } |
761 | else { |
14a976d6 |
762 | /* I hope you really know what you are doing. */ |
29569577 |
763 | SvREADONLY_off(sv); |
764 | XSRETURN_NO; |
765 | } |
766 | } |
14a976d6 |
767 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
768 | } |
769 | |
14a976d6 |
770 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
771 | { |
772 | dXSARGS; |
773 | SV *sv = SvRV(ST(0)); |
774 | if (items == 1) |
14a976d6 |
775 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
776 | else if (items == 2) { |
14a976d6 |
777 | /* I hope you really know what you are doing. */ |
29569577 |
778 | SvREFCNT(sv) = SvIV(ST(1)); |
779 | XSRETURN_IV(SvREFCNT(sv)); |
780 | } |
14a976d6 |
781 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
782 | } |
783 | |
f044d0d1 |
784 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
785 | { |
786 | dXSARGS; |
787 | HV *hv = (HV *) SvRV(ST(0)); |
3540d4ce |
788 | if (items != 1) |
789 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
790 | hv_clear_placeholders(hv); |
dfd4ef2f |
791 | XSRETURN(0); |
792 | } |
39f7a870 |
793 | |
39cff0d9 |
794 | XS(XS_Regexp_DESTROY) |
795 | { |
796 | |
797 | } |
798 | |
39f7a870 |
799 | XS(XS_PerlIO_get_layers) |
800 | { |
801 | dXSARGS; |
802 | if (items < 1 || items % 2 == 0) |
803 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
804 | #ifdef USE_PERLIO |
39f7a870 |
805 | { |
806 | SV * sv; |
807 | GV * gv; |
808 | IO * io; |
809 | bool input = TRUE; |
810 | bool details = FALSE; |
811 | |
812 | if (items > 1) { |
39f7a870 |
813 | SV **svp; |
814 | |
815 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
816 | SV **varp = svp; |
817 | SV **valp = svp + 1; |
818 | STRLEN klen; |
819 | char *key = SvPV(*varp, klen); |
820 | |
821 | switch (*key) { |
822 | case 'i': |
823 | if (klen == 5 && memEQ(key, "input", 5)) { |
824 | input = SvTRUE(*valp); |
825 | break; |
826 | } |
827 | goto fail; |
828 | case 'o': |
829 | if (klen == 6 && memEQ(key, "output", 6)) { |
830 | input = !SvTRUE(*valp); |
831 | break; |
832 | } |
833 | goto fail; |
834 | case 'd': |
835 | if (klen == 7 && memEQ(key, "details", 7)) { |
836 | details = SvTRUE(*valp); |
837 | break; |
838 | } |
839 | goto fail; |
840 | default: |
841 | fail: |
842 | Perl_croak(aTHX_ |
843 | "get_layers: unknown argument '%s'", |
844 | key); |
845 | } |
846 | } |
847 | |
848 | SP -= (items - 1); |
849 | } |
850 | |
851 | sv = POPs; |
852 | gv = (GV*)sv; |
853 | |
854 | if (!isGV(sv)) { |
855 | if (SvROK(sv) && isGV(SvRV(sv))) |
856 | gv = (GV*)SvRV(sv); |
857 | else |
858 | gv = gv_fetchpv(SvPVX(sv), FALSE, SVt_PVIO); |
859 | } |
860 | |
861 | if (gv && (io = GvIO(gv))) { |
862 | dTARGET; |
863 | AV* av = PerlIO_get_layers(aTHX_ input ? |
864 | IoIFP(io) : IoOFP(io)); |
865 | I32 i; |
866 | I32 last = av_len(av); |
867 | I32 nitem = 0; |
868 | |
869 | for (i = last; i >= 0; i -= 3) { |
870 | SV **namsvp; |
871 | SV **argsvp; |
872 | SV **flgsvp; |
873 | bool namok, argok, flgok; |
874 | |
875 | namsvp = av_fetch(av, i - 2, FALSE); |
876 | argsvp = av_fetch(av, i - 1, FALSE); |
877 | flgsvp = av_fetch(av, i, FALSE); |
878 | |
879 | namok = namsvp && *namsvp && SvPOK(*namsvp); |
880 | argok = argsvp && *argsvp && SvPOK(*argsvp); |
881 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
882 | |
883 | if (details) { |
884 | XPUSHs(namok ? |
885 | newSVpv(SvPVX(*namsvp), 0) : &PL_sv_undef); |
886 | XPUSHs(argok ? |
887 | newSVpv(SvPVX(*argsvp), 0) : &PL_sv_undef); |
888 | if (flgok) |
889 | XPUSHi(SvIVX(*flgsvp)); |
890 | else |
891 | XPUSHs(&PL_sv_undef); |
892 | nitem += 3; |
893 | } |
894 | else { |
895 | if (namok && argok) |
896 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
897 | *namsvp, *argsvp)); |
898 | else if (namok) |
899 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
900 | else |
901 | XPUSHs(&PL_sv_undef); |
902 | nitem++; |
903 | if (flgok) { |
904 | IV flags = SvIVX(*flgsvp); |
905 | |
906 | if (flags & PERLIO_F_UTF8) { |
907 | XPUSHs(newSVpvn("utf8", 4)); |
908 | nitem++; |
909 | } |
910 | } |
911 | } |
912 | } |
913 | |
914 | SvREFCNT_dec(av); |
915 | |
916 | XSRETURN(nitem); |
917 | } |
918 | } |
5fef3b4a |
919 | #endif |
39f7a870 |
920 | |
921 | XSRETURN(0); |
922 | } |
923 | |
9a7034eb |
924 | XS(XS_Internals_hash_seed) |
c910b28a |
925 | { |
c85d3f85 |
926 | /* Using dXSARGS would also have dITEM and dSP, |
927 | * which define 2 unused local variables. */ |
928 | dMARK; dAX; |
81eaca17 |
929 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
930 | } |
931 | |
008fb0c0 |
932 | XS(XS_Internals_rehash_seed) |
8e90d776 |
933 | { |
934 | /* Using dXSARGS would also have dITEM and dSP, |
935 | * which define 2 unused local variables. */ |
936 | dMARK; dAX; |
008fb0c0 |
937 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
938 | } |
939 | |
05619474 |
940 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
941 | { |
942 | dXSARGS; |
943 | if (SvROK(ST(0))) { |
944 | HV *hv = (HV *) SvRV(ST(0)); |
945 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
946 | if (HvREHASH(hv)) |
947 | XSRETURN_YES; |
948 | else |
949 | XSRETURN_NO; |
950 | } |
951 | } |
952 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
953 | } |