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 | |
166f8a29 |
17 | /* This file contains the code that implements the functions in Perl's |
18 | * UNIVERSAL package, such as UNIVERSAL->can(). |
19 | */ |
20 | |
6d4a7be2 |
21 | #include "EXTERN.h" |
864dbfa3 |
22 | #define PERL_IN_UNIVERSAL_C |
6d4a7be2 |
23 | #include "perl.h" |
6d4a7be2 |
24 | |
39f7a870 |
25 | #ifdef USE_PERLIO |
26 | #include "perliol.h" /* For the PERLIO_F_XXX */ |
27 | #endif |
28 | |
6d4a7be2 |
29 | /* |
30 | * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com> |
31 | * The main guts of traverse_isa was actually copied from gv_fetchmeth |
32 | */ |
33 | |
76e3520e |
34 | STATIC SV * |
301daebc |
35 | S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash, |
36 | int len, int level) |
6d4a7be2 |
37 | { |
38 | AV* av; |
39 | GV* gv; |
40 | GV** gvp; |
41 | HV* hv = Nullhv; |
46e4b22b |
42 | SV* subgen = Nullsv; |
6d4a7be2 |
43 | |
301daebc |
44 | /* A stash/class can go by many names (ie. User == main::User), so |
45 | we compare the stash itself just in case */ |
46 | if (name_stash && (stash == name_stash)) |
47 | return &PL_sv_yes; |
6d4a7be2 |
48 | |
46e4b22b |
49 | if (strEQ(HvNAME(stash), name)) |
3280af22 |
50 | return &PL_sv_yes; |
6d4a7be2 |
51 | |
a1d407e8 |
52 | if (strEQ(name, "UNIVERSAL")) |
53 | return &PL_sv_yes; |
54 | |
6d4a7be2 |
55 | if (level > 100) |
46e4b22b |
56 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
57 | HvNAME(stash)); |
6d4a7be2 |
58 | |
59 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE); |
60 | |
46e4b22b |
61 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv)) |
62 | && (hv = GvHV(gv))) |
63 | { |
eb160463 |
64 | if (SvIV(subgen) == (IV)PL_sub_generation) { |
46e4b22b |
65 | SV* sv; |
66 | SV** svp = (SV**)hv_fetch(hv, name, len, FALSE); |
67 | if (svp && (sv = *svp) != (SV*)&PL_sv_undef) { |
68 | DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n", |
69 | name, HvNAME(stash)) ); |
70 | return sv; |
71 | } |
72 | } |
73 | else { |
74 | DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", |
75 | HvNAME(stash)) ); |
76 | hv_clear(hv); |
77 | sv_setiv(subgen, PL_sub_generation); |
78 | } |
6d4a7be2 |
79 | } |
80 | |
81 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
46e4b22b |
82 | |
3280af22 |
83 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
46e4b22b |
84 | if (!hv || !subgen) { |
6d4a7be2 |
85 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE); |
86 | |
87 | gv = *gvp; |
88 | |
89 | if (SvTYPE(gv) != SVt_PVGV) |
90 | gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); |
91 | |
46e4b22b |
92 | if (!hv) |
93 | hv = GvHVn(gv); |
94 | if (!subgen) { |
95 | subgen = newSViv(PL_sub_generation); |
96 | GvSV(gv) = subgen; |
97 | } |
6d4a7be2 |
98 | } |
46e4b22b |
99 | if (hv) { |
6d4a7be2 |
100 | SV** svp = AvARRAY(av); |
93965878 |
101 | /* NOTE: No support for tied ISA */ |
102 | I32 items = AvFILLp(av) + 1; |
6d4a7be2 |
103 | while (items--) { |
104 | SV* sv = *svp++; |
105 | HV* basestash = gv_stashsv(sv, FALSE); |
106 | if (!basestash) { |
599cee73 |
107 | if (ckWARN(WARN_MISC)) |
9014280d |
108 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d |
109 | "Can't locate package %"SVf" for @%s::ISA", |
110 | sv, HvNAME(stash)); |
6d4a7be2 |
111 | continue; |
112 | } |
301daebc |
113 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
114 | len, level + 1)) { |
3280af22 |
115 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
116 | return &PL_sv_yes; |
6d4a7be2 |
117 | } |
118 | } |
3280af22 |
119 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 |
120 | } |
121 | } |
a1d407e8 |
122 | return &PL_sv_no; |
6d4a7be2 |
123 | } |
124 | |
954c1994 |
125 | /* |
ccfc67b7 |
126 | =head1 SV Manipulation Functions |
127 | |
954c1994 |
128 | =for apidoc sv_derived_from |
129 | |
130 | Returns a boolean indicating whether the SV is derived from the specified |
131 | class. This is the function that implements C<UNIVERSAL::isa>. It works |
132 | for class names as well as for objects. |
133 | |
134 | =cut |
135 | */ |
136 | |
55497cff |
137 | bool |
864dbfa3 |
138 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff |
139 | { |
55497cff |
140 | char *type; |
141 | HV *stash; |
301daebc |
142 | HV *name_stash; |
46e4b22b |
143 | |
55497cff |
144 | stash = Nullhv; |
145 | type = Nullch; |
46e4b22b |
146 | |
55497cff |
147 | if (SvGMAGICAL(sv)) |
148 | mg_get(sv) ; |
149 | |
150 | if (SvROK(sv)) { |
151 | sv = SvRV(sv); |
152 | type = sv_reftype(sv,0); |
46e4b22b |
153 | if (SvOBJECT(sv)) |
55497cff |
154 | stash = SvSTASH(sv); |
155 | } |
156 | else { |
157 | stash = gv_stashsv(sv, FALSE); |
158 | } |
46e4b22b |
159 | |
301daebc |
160 | name_stash = gv_stashpv(name, FALSE); |
161 | |
55497cff |
162 | return (type && strEQ(type,name)) || |
301daebc |
163 | (stash && isa_lookup(stash, name, name_stash, strlen(name), 0) |
164 | == &PL_sv_yes) |
55497cff |
165 | ? TRUE |
166 | : FALSE ; |
55497cff |
167 | } |
168 | |
1b026014 |
169 | #include "XSUB.h" |
170 | |
acfe0abc |
171 | void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
172 | void XS_UNIVERSAL_can(pTHX_ CV *cv); |
173 | void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); |
439cb1c4 |
174 | XS(XS_version_new); |
175 | XS(XS_version_stringify); |
176 | XS(XS_version_numify); |
177 | XS(XS_version_vcmp); |
178 | XS(XS_version_boolean); |
179 | XS(XS_version_noop); |
c8d69e4a |
180 | XS(XS_version_is_alpha); |
137d6fc0 |
181 | XS(XS_version_qv); |
8800c35a |
182 | XS(XS_utf8_is_utf8); |
1b026014 |
183 | XS(XS_utf8_valid); |
184 | XS(XS_utf8_encode); |
185 | XS(XS_utf8_decode); |
186 | XS(XS_utf8_upgrade); |
187 | XS(XS_utf8_downgrade); |
188 | XS(XS_utf8_unicode_to_native); |
189 | XS(XS_utf8_native_to_unicode); |
29569577 |
190 | XS(XS_Internals_SvREADONLY); |
191 | XS(XS_Internals_SvREFCNT); |
f044d0d1 |
192 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 |
193 | XS(XS_PerlIO_get_layers); |
39cff0d9 |
194 | XS(XS_Regexp_DESTROY); |
9a7034eb |
195 | XS(XS_Internals_hash_seed); |
008fb0c0 |
196 | XS(XS_Internals_rehash_seed); |
05619474 |
197 | XS(XS_Internals_HvREHASH); |
0cb96387 |
198 | |
199 | void |
200 | Perl_boot_core_UNIVERSAL(pTHX) |
201 | { |
202 | char *file = __FILE__; |
203 | |
204 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
205 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
206 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
439cb1c4 |
207 | { |
ad63d80f |
208 | /* register the overloading (type 'A') magic */ |
209 | PL_amagic_generation++; |
439cb1c4 |
210 | /* Make it findable via fetchmethod */ |
be2ebcad |
211 | newXS("version::()", XS_version_noop, file); |
439cb1c4 |
212 | newXS("version::new", XS_version_new, file); |
213 | newXS("version::(\"\"", XS_version_stringify, file); |
214 | newXS("version::stringify", XS_version_stringify, file); |
215 | newXS("version::(0+", XS_version_numify, file); |
216 | newXS("version::numify", XS_version_numify, file); |
217 | newXS("version::(cmp", XS_version_vcmp, file); |
218 | newXS("version::(<=>", XS_version_vcmp, file); |
219 | newXS("version::vcmp", XS_version_vcmp, file); |
220 | newXS("version::(bool", XS_version_boolean, file); |
221 | newXS("version::boolean", XS_version_boolean, file); |
222 | newXS("version::(nomethod", XS_version_noop, file); |
223 | newXS("version::noop", XS_version_noop, file); |
c8d69e4a |
224 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 |
225 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 |
226 | } |
8800c35a |
227 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 |
228 | newXS("utf8::valid", XS_utf8_valid, file); |
229 | newXS("utf8::encode", XS_utf8_encode, file); |
230 | newXS("utf8::decode", XS_utf8_decode, file); |
231 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
232 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
233 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
234 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
29569577 |
235 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
236 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
dfd4ef2f |
237 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 |
238 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce |
239 | newXSproto("PerlIO::get_layers", |
240 | XS_PerlIO_get_layers, file, "*;@"); |
39cff0d9 |
241 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb |
242 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 |
243 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 |
244 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 |
245 | } |
246 | |
55497cff |
247 | |
6d4a7be2 |
248 | XS(XS_UNIVERSAL_isa) |
249 | { |
250 | dXSARGS; |
55497cff |
251 | SV *sv; |
252 | char *name; |
2d8e6c8d |
253 | STRLEN n_a; |
6d4a7be2 |
254 | |
255 | if (items != 2) |
cea2e8a9 |
256 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 |
257 | |
258 | sv = ST(0); |
f8f70380 |
259 | |
d3f7f2b2 |
260 | if (SvGMAGICAL(sv)) |
261 | mg_get(sv); |
262 | |
253ecd6d |
263 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
264 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
265 | XSRETURN_UNDEF; |
266 | |
2d8e6c8d |
267 | name = (char *)SvPV(ST(1),n_a); |
6d4a7be2 |
268 | |
54310121 |
269 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 |
270 | XSRETURN(1); |
271 | } |
272 | |
6d4a7be2 |
273 | XS(XS_UNIVERSAL_can) |
274 | { |
275 | dXSARGS; |
276 | SV *sv; |
277 | char *name; |
278 | SV *rv; |
6f08146e |
279 | HV *pkg = NULL; |
2d8e6c8d |
280 | STRLEN n_a; |
6d4a7be2 |
281 | |
282 | if (items != 2) |
cea2e8a9 |
283 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
284 | |
285 | sv = ST(0); |
f8f70380 |
286 | |
d3f7f2b2 |
287 | if (SvGMAGICAL(sv)) |
288 | mg_get(sv); |
289 | |
253ecd6d |
290 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
291 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
292 | XSRETURN_UNDEF; |
293 | |
2d8e6c8d |
294 | name = (char *)SvPV(ST(1),n_a); |
3280af22 |
295 | rv = &PL_sv_undef; |
6d4a7be2 |
296 | |
46e4b22b |
297 | if (SvROK(sv)) { |
6f08146e |
298 | sv = (SV*)SvRV(sv); |
46e4b22b |
299 | if (SvOBJECT(sv)) |
6f08146e |
300 | pkg = SvSTASH(sv); |
301 | } |
302 | else { |
303 | pkg = gv_stashsv(sv, FALSE); |
304 | } |
305 | |
306 | if (pkg) { |
dc848c6f |
307 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
308 | if (gv && isGV(gv)) |
309 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); |
6d4a7be2 |
310 | } |
311 | |
312 | ST(0) = rv; |
313 | XSRETURN(1); |
314 | } |
315 | |
6d4a7be2 |
316 | XS(XS_UNIVERSAL_VERSION) |
317 | { |
318 | dXSARGS; |
319 | HV *pkg; |
320 | GV **gvp; |
321 | GV *gv; |
322 | SV *sv; |
323 | char *undef; |
324 | |
1571675a |
325 | if (SvROK(ST(0))) { |
6d4a7be2 |
326 | sv = (SV*)SvRV(ST(0)); |
1571675a |
327 | if (!SvOBJECT(sv)) |
cea2e8a9 |
328 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 |
329 | pkg = SvSTASH(sv); |
330 | } |
331 | else { |
332 | pkg = gv_stashsv(ST(0), FALSE); |
333 | } |
334 | |
335 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); |
336 | |
d4bea2fb |
337 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 |
338 | SV *nsv = sv_newmortal(); |
339 | sv_setsv(nsv, sv); |
340 | sv = nsv; |
137d6fc0 |
341 | if ( !sv_derived_from(sv, "version")) |
342 | upg_version(sv); |
6d4a7be2 |
343 | undef = Nullch; |
344 | } |
345 | else { |
3280af22 |
346 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 |
347 | undef = "(undef)"; |
348 | } |
349 | |
1571675a |
350 | if (items > 1) { |
351 | STRLEN len; |
352 | SV *req = ST(1); |
353 | |
62658f4d |
354 | if (undef) { |
355 | if (pkg) |
356 | Perl_croak(aTHX_ |
357 | "%s does not define $%s::VERSION--version check failed", |
358 | HvNAME(pkg), HvNAME(pkg)); |
359 | else { |
360 | char *str = SvPVx(ST(0), len); |
361 | |
362 | Perl_croak(aTHX_ |
363 | "%s defines neither package nor VERSION--version check failed", str); |
364 | } |
365 | } |
ad63d80f |
366 | |
137d6fc0 |
367 | if ( !sv_derived_from(req, "version")) { |
368 | /* req may very well be R/O, so create a new object */ |
369 | SV *nsv = sv_newmortal(); |
370 | sv_setsv(nsv, req); |
371 | req = nsv; |
372 | upg_version(req); |
373 | } |
1571675a |
374 | |
137d6fc0 |
375 | if ( vcmp( req, sv ) > 0 ) |
b9381830 |
376 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
377 | "this is only version %"SVf" (%"SVf")", HvNAME(pkg), |
378 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d |
379 | } |
6d4a7be2 |
380 | |
2b140d5b |
381 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 |
382 | ST(0) = vnumify(sv); |
13f8f398 |
383 | } else { |
384 | ST(0) = sv; |
b38a9dc5 |
385 | } |
6d4a7be2 |
386 | |
387 | XSRETURN(1); |
388 | } |
389 | |
439cb1c4 |
390 | XS(XS_version_new) |
391 | { |
392 | dXSARGS; |
129318bd |
393 | if (items > 3) |
439cb1c4 |
394 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
395 | SP -= items; |
396 | { |
137d6fc0 |
397 | char * class = (char *)SvPV_nolen(ST(0)); |
398 | SV *vs = ST(1); |
399 | SV *rv; |
129318bd |
400 | if (items == 3 ) |
401 | { |
137d6fc0 |
402 | vs = sv_newmortal(); |
403 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen(ST(2))); |
129318bd |
404 | } |
439cb1c4 |
405 | |
137d6fc0 |
406 | rv = new_version(vs); |
407 | if ( strcmp(class,"version") != 0 ) /* inherited new() */ |
408 | sv_bless(rv, gv_stashpv(class,TRUE)); |
409 | |
410 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
411 | PUTBACK; |
412 | return; |
413 | } |
414 | } |
415 | |
416 | XS(XS_version_stringify) |
417 | { |
41be1fbd |
418 | dXSARGS; |
419 | if (items < 1) |
420 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
421 | SP -= items; |
422 | { |
423 | SV * lobj; |
424 | |
425 | if (sv_derived_from(ST(0), "version")) { |
426 | SV *tmp = SvRV(ST(0)); |
427 | lobj = tmp; |
428 | } |
429 | else |
430 | Perl_croak(aTHX_ "lobj is not of type version"); |
431 | |
137d6fc0 |
432 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
433 | |
434 | PUTBACK; |
435 | return; |
436 | } |
439cb1c4 |
437 | } |
438 | |
439 | XS(XS_version_numify) |
440 | { |
41be1fbd |
441 | dXSARGS; |
442 | if (items < 1) |
443 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
444 | SP -= items; |
445 | { |
446 | SV * lobj; |
447 | |
448 | if (sv_derived_from(ST(0), "version")) { |
449 | SV *tmp = SvRV(ST(0)); |
450 | lobj = tmp; |
451 | } |
452 | else |
453 | Perl_croak(aTHX_ "lobj is not of type version"); |
454 | |
137d6fc0 |
455 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
456 | |
457 | PUTBACK; |
458 | return; |
459 | } |
439cb1c4 |
460 | } |
461 | |
462 | XS(XS_version_vcmp) |
463 | { |
41be1fbd |
464 | dXSARGS; |
465 | if (items < 1) |
466 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
467 | SP -= items; |
468 | { |
469 | SV * lobj; |
470 | |
471 | if (sv_derived_from(ST(0), "version")) { |
472 | SV *tmp = SvRV(ST(0)); |
473 | lobj = tmp; |
474 | } |
475 | else |
476 | Perl_croak(aTHX_ "lobj is not of type version"); |
477 | |
478 | { |
479 | SV *rs; |
480 | SV *rvs; |
481 | SV * robj = ST(1); |
482 | IV swap = (IV)SvIV(ST(2)); |
483 | |
484 | if ( ! sv_derived_from(robj, "version") ) |
485 | { |
486 | robj = new_version(robj); |
487 | } |
488 | rvs = SvRV(robj); |
489 | |
490 | if ( swap ) |
491 | { |
492 | rs = newSViv(vcmp(rvs,lobj)); |
493 | } |
494 | else |
495 | { |
496 | rs = newSViv(vcmp(lobj,rvs)); |
497 | } |
498 | |
137d6fc0 |
499 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
500 | } |
501 | |
502 | PUTBACK; |
503 | return; |
504 | } |
439cb1c4 |
505 | } |
506 | |
507 | XS(XS_version_boolean) |
508 | { |
41be1fbd |
509 | dXSARGS; |
510 | if (items < 1) |
511 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
512 | SP -= items; |
513 | { |
514 | SV * lobj; |
515 | |
516 | if (sv_derived_from(ST(0), "version")) { |
517 | SV *tmp = SvRV(ST(0)); |
518 | lobj = tmp; |
519 | } |
520 | else |
521 | Perl_croak(aTHX_ "lobj is not of type version"); |
522 | |
523 | { |
524 | SV *rs; |
525 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
137d6fc0 |
526 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
527 | } |
528 | |
529 | PUTBACK; |
530 | return; |
531 | } |
439cb1c4 |
532 | } |
533 | |
534 | XS(XS_version_noop) |
535 | { |
41be1fbd |
536 | dXSARGS; |
537 | if (items < 1) |
538 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
539 | { |
540 | SV * lobj; |
541 | |
542 | if (sv_derived_from(ST(0), "version")) { |
543 | SV *tmp = SvRV(ST(0)); |
544 | lobj = tmp; |
545 | } |
546 | else |
547 | Perl_croak(aTHX_ "lobj is not of type version"); |
548 | |
549 | { |
550 | Perl_croak(aTHX_ "operation not supported with version object"); |
551 | } |
552 | |
553 | } |
554 | XSRETURN_EMPTY; |
439cb1c4 |
555 | } |
556 | |
c8d69e4a |
557 | XS(XS_version_is_alpha) |
558 | { |
559 | dXSARGS; |
560 | if (items != 1) |
561 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
562 | SP -= items; |
563 | { |
564 | SV *lobj; |
565 | |
566 | if (sv_derived_from(ST(0), "version")) { |
567 | SV *tmp = SvRV(ST(0)); |
568 | lobj = tmp; |
569 | } |
570 | else |
571 | Perl_croak(aTHX_ "lobj is not of type version"); |
572 | { |
573 | I32 len = av_len((AV *)lobj); |
574 | I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); |
575 | if ( digit < 0 ) |
576 | XSRETURN_YES; |
577 | else |
578 | XSRETURN_NO; |
579 | } |
580 | PUTBACK; |
581 | return; |
582 | } |
583 | } |
584 | |
137d6fc0 |
585 | XS(XS_version_qv) |
586 | { |
587 | dXSARGS; |
588 | if (items != 1) |
589 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
590 | SP -= items; |
591 | { |
592 | SV * ver = ST(0); |
593 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ |
594 | { |
595 | SV *vs = sv_newmortal(); |
596 | char *version; |
597 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
598 | { |
599 | char tbuf[64]; |
600 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
601 | version = savepv(tbuf); |
602 | } |
603 | else |
604 | { |
605 | version = savepv(SvPV_nolen(ver)); |
606 | } |
607 | (void)scan_version(version,vs,TRUE); |
608 | Safefree(version); |
609 | |
610 | PUSHs(vs); |
611 | } |
612 | else |
613 | { |
614 | PUSHs(sv_2mortal(new_version(ver))); |
615 | } |
616 | |
617 | PUTBACK; |
618 | return; |
619 | } |
620 | } |
621 | |
8800c35a |
622 | XS(XS_utf8_is_utf8) |
623 | { |
41be1fbd |
624 | dXSARGS; |
625 | if (items != 1) |
626 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
627 | { |
628 | SV * sv = ST(0); |
629 | { |
630 | if (SvUTF8(sv)) |
631 | XSRETURN_YES; |
632 | else |
633 | XSRETURN_NO; |
634 | } |
635 | } |
636 | XSRETURN_EMPTY; |
8800c35a |
637 | } |
638 | |
1b026014 |
639 | XS(XS_utf8_valid) |
640 | { |
41be1fbd |
641 | dXSARGS; |
642 | if (items != 1) |
643 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
644 | { |
645 | SV * sv = ST(0); |
646 | { |
647 | STRLEN len; |
648 | char *s = SvPV(sv,len); |
649 | if (!SvUTF8(sv) || is_utf8_string((U8*)s,len)) |
650 | XSRETURN_YES; |
651 | else |
652 | XSRETURN_NO; |
653 | } |
654 | } |
655 | XSRETURN_EMPTY; |
1b026014 |
656 | } |
657 | |
658 | XS(XS_utf8_encode) |
659 | { |
660 | dXSARGS; |
661 | if (items != 1) |
662 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
663 | { |
664 | SV * sv = ST(0); |
665 | |
666 | sv_utf8_encode(sv); |
667 | } |
668 | XSRETURN_EMPTY; |
669 | } |
670 | |
671 | XS(XS_utf8_decode) |
672 | { |
673 | dXSARGS; |
674 | if (items != 1) |
675 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
676 | { |
677 | SV * sv = ST(0); |
678 | bool RETVAL; |
679 | |
680 | RETVAL = sv_utf8_decode(sv); |
681 | ST(0) = boolSV(RETVAL); |
682 | sv_2mortal(ST(0)); |
683 | } |
684 | XSRETURN(1); |
685 | } |
686 | |
687 | XS(XS_utf8_upgrade) |
688 | { |
689 | dXSARGS; |
690 | if (items != 1) |
691 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
692 | { |
693 | SV * sv = ST(0); |
694 | STRLEN RETVAL; |
695 | dXSTARG; |
696 | |
697 | RETVAL = sv_utf8_upgrade(sv); |
698 | XSprePUSH; PUSHi((IV)RETVAL); |
699 | } |
700 | XSRETURN(1); |
701 | } |
702 | |
703 | XS(XS_utf8_downgrade) |
704 | { |
705 | dXSARGS; |
706 | if (items < 1 || items > 2) |
707 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
708 | { |
709 | SV * sv = ST(0); |
710 | bool failok; |
711 | bool RETVAL; |
712 | |
713 | if (items < 2) |
714 | failok = 0; |
715 | else { |
716 | failok = (int)SvIV(ST(1)); |
717 | } |
718 | |
719 | RETVAL = sv_utf8_downgrade(sv, failok); |
720 | ST(0) = boolSV(RETVAL); |
721 | sv_2mortal(ST(0)); |
722 | } |
723 | XSRETURN(1); |
724 | } |
725 | |
726 | XS(XS_utf8_native_to_unicode) |
727 | { |
728 | dXSARGS; |
729 | UV uv = SvUV(ST(0)); |
b7953727 |
730 | |
731 | if (items > 1) |
732 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
733 | |
1b026014 |
734 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
735 | XSRETURN(1); |
736 | } |
737 | |
738 | XS(XS_utf8_unicode_to_native) |
739 | { |
740 | dXSARGS; |
741 | UV uv = SvUV(ST(0)); |
b7953727 |
742 | |
743 | if (items > 1) |
744 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
745 | |
1b026014 |
746 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
747 | XSRETURN(1); |
748 | } |
749 | |
14a976d6 |
750 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
751 | { |
752 | dXSARGS; |
753 | SV *sv = SvRV(ST(0)); |
754 | if (items == 1) { |
755 | if (SvREADONLY(sv)) |
756 | XSRETURN_YES; |
757 | else |
758 | XSRETURN_NO; |
759 | } |
760 | else if (items == 2) { |
761 | if (SvTRUE(ST(1))) { |
762 | SvREADONLY_on(sv); |
763 | XSRETURN_YES; |
764 | } |
765 | else { |
14a976d6 |
766 | /* I hope you really know what you are doing. */ |
29569577 |
767 | SvREADONLY_off(sv); |
768 | XSRETURN_NO; |
769 | } |
770 | } |
14a976d6 |
771 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
772 | } |
773 | |
14a976d6 |
774 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
775 | { |
776 | dXSARGS; |
777 | SV *sv = SvRV(ST(0)); |
778 | if (items == 1) |
14a976d6 |
779 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
780 | else if (items == 2) { |
14a976d6 |
781 | /* I hope you really know what you are doing. */ |
29569577 |
782 | SvREFCNT(sv) = SvIV(ST(1)); |
783 | XSRETURN_IV(SvREFCNT(sv)); |
784 | } |
14a976d6 |
785 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
786 | } |
787 | |
f044d0d1 |
788 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
789 | { |
790 | dXSARGS; |
791 | HV *hv = (HV *) SvRV(ST(0)); |
3540d4ce |
792 | if (items != 1) |
793 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
794 | hv_clear_placeholders(hv); |
dfd4ef2f |
795 | XSRETURN(0); |
796 | } |
39f7a870 |
797 | |
39cff0d9 |
798 | XS(XS_Regexp_DESTROY) |
799 | { |
800 | |
801 | } |
802 | |
39f7a870 |
803 | XS(XS_PerlIO_get_layers) |
804 | { |
805 | dXSARGS; |
806 | if (items < 1 || items % 2 == 0) |
807 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
808 | #ifdef USE_PERLIO |
39f7a870 |
809 | { |
810 | SV * sv; |
811 | GV * gv; |
812 | IO * io; |
813 | bool input = TRUE; |
814 | bool details = FALSE; |
815 | |
816 | if (items > 1) { |
39f7a870 |
817 | SV **svp; |
818 | |
819 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
820 | SV **varp = svp; |
821 | SV **valp = svp + 1; |
822 | STRLEN klen; |
823 | char *key = SvPV(*varp, klen); |
824 | |
825 | switch (*key) { |
826 | case 'i': |
827 | if (klen == 5 && memEQ(key, "input", 5)) { |
828 | input = SvTRUE(*valp); |
829 | break; |
830 | } |
831 | goto fail; |
832 | case 'o': |
833 | if (klen == 6 && memEQ(key, "output", 6)) { |
834 | input = !SvTRUE(*valp); |
835 | break; |
836 | } |
837 | goto fail; |
838 | case 'd': |
839 | if (klen == 7 && memEQ(key, "details", 7)) { |
840 | details = SvTRUE(*valp); |
841 | break; |
842 | } |
843 | goto fail; |
844 | default: |
845 | fail: |
846 | Perl_croak(aTHX_ |
847 | "get_layers: unknown argument '%s'", |
848 | key); |
849 | } |
850 | } |
851 | |
852 | SP -= (items - 1); |
853 | } |
854 | |
855 | sv = POPs; |
856 | gv = (GV*)sv; |
857 | |
858 | if (!isGV(sv)) { |
859 | if (SvROK(sv) && isGV(SvRV(sv))) |
860 | gv = (GV*)SvRV(sv); |
861 | else |
862 | gv = gv_fetchpv(SvPVX(sv), FALSE, SVt_PVIO); |
863 | } |
864 | |
865 | if (gv && (io = GvIO(gv))) { |
866 | dTARGET; |
867 | AV* av = PerlIO_get_layers(aTHX_ input ? |
868 | IoIFP(io) : IoOFP(io)); |
869 | I32 i; |
870 | I32 last = av_len(av); |
871 | I32 nitem = 0; |
872 | |
873 | for (i = last; i >= 0; i -= 3) { |
874 | SV **namsvp; |
875 | SV **argsvp; |
876 | SV **flgsvp; |
877 | bool namok, argok, flgok; |
878 | |
879 | namsvp = av_fetch(av, i - 2, FALSE); |
880 | argsvp = av_fetch(av, i - 1, FALSE); |
881 | flgsvp = av_fetch(av, i, FALSE); |
882 | |
883 | namok = namsvp && *namsvp && SvPOK(*namsvp); |
884 | argok = argsvp && *argsvp && SvPOK(*argsvp); |
885 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
886 | |
887 | if (details) { |
888 | XPUSHs(namok ? |
889 | newSVpv(SvPVX(*namsvp), 0) : &PL_sv_undef); |
890 | XPUSHs(argok ? |
891 | newSVpv(SvPVX(*argsvp), 0) : &PL_sv_undef); |
892 | if (flgok) |
893 | XPUSHi(SvIVX(*flgsvp)); |
894 | else |
895 | XPUSHs(&PL_sv_undef); |
896 | nitem += 3; |
897 | } |
898 | else { |
899 | if (namok && argok) |
900 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
901 | *namsvp, *argsvp)); |
902 | else if (namok) |
903 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
904 | else |
905 | XPUSHs(&PL_sv_undef); |
906 | nitem++; |
907 | if (flgok) { |
908 | IV flags = SvIVX(*flgsvp); |
909 | |
910 | if (flags & PERLIO_F_UTF8) { |
911 | XPUSHs(newSVpvn("utf8", 4)); |
912 | nitem++; |
913 | } |
914 | } |
915 | } |
916 | } |
917 | |
918 | SvREFCNT_dec(av); |
919 | |
920 | XSRETURN(nitem); |
921 | } |
922 | } |
5fef3b4a |
923 | #endif |
39f7a870 |
924 | |
925 | XSRETURN(0); |
926 | } |
927 | |
9a7034eb |
928 | XS(XS_Internals_hash_seed) |
c910b28a |
929 | { |
c85d3f85 |
930 | /* Using dXSARGS would also have dITEM and dSP, |
931 | * which define 2 unused local variables. */ |
932 | dMARK; dAX; |
81eaca17 |
933 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
934 | } |
935 | |
008fb0c0 |
936 | XS(XS_Internals_rehash_seed) |
8e90d776 |
937 | { |
938 | /* Using dXSARGS would also have dITEM and dSP, |
939 | * which define 2 unused local variables. */ |
940 | dMARK; dAX; |
008fb0c0 |
941 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
942 | } |
943 | |
05619474 |
944 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
945 | { |
946 | dXSARGS; |
947 | if (SvROK(ST(0))) { |
948 | HV *hv = (HV *) SvRV(ST(0)); |
949 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
950 | if (HvREHASH(hv)) |
951 | XSRETURN_YES; |
952 | else |
953 | XSRETURN_NO; |
954 | } |
955 | } |
956 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
957 | } |