Commit | Line | Data |
d6376244 |
1 | /* universal.c |
2 | * |
b5f8cc5c |
3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
acde74e1 |
4 | * 2005, 2006, 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 | { |
97aff369 |
38 | dVAR; |
6d4a7be2 |
39 | AV* av; |
40 | GV* gv; |
41 | GV** gvp; |
5c284bb0 |
42 | HV* hv = NULL; |
c445ea15 |
43 | SV* subgen = NULL; |
bfcb3514 |
44 | const char *hvname; |
6d4a7be2 |
45 | |
301daebc |
46 | /* A stash/class can go by many names (ie. User == main::User), so |
47 | we compare the stash itself just in case */ |
48 | if (name_stash && (stash == name_stash)) |
49 | return &PL_sv_yes; |
6d4a7be2 |
50 | |
bfcb3514 |
51 | hvname = HvNAME_get(stash); |
52 | |
53 | if (strEQ(hvname, name)) |
3280af22 |
54 | return &PL_sv_yes; |
6d4a7be2 |
55 | |
a1d407e8 |
56 | if (strEQ(name, "UNIVERSAL")) |
57 | return &PL_sv_yes; |
58 | |
6d4a7be2 |
59 | if (level > 100) |
46e4b22b |
60 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
bfcb3514 |
61 | hvname); |
6d4a7be2 |
62 | |
017a3ce5 |
63 | gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", FALSE); |
6d4a7be2 |
64 | |
46e4b22b |
65 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv)) |
66 | && (hv = GvHV(gv))) |
67 | { |
eb160463 |
68 | if (SvIV(subgen) == (IV)PL_sub_generation) { |
46e4b22b |
69 | SV* sv; |
7452cf6a |
70 | SV** const svp = (SV**)hv_fetch(hv, name, len, FALSE); |
46e4b22b |
71 | if (svp && (sv = *svp) != (SV*)&PL_sv_undef) { |
72 | DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n", |
bfcb3514 |
73 | name, hvname) ); |
46e4b22b |
74 | return sv; |
75 | } |
76 | } |
77 | else { |
78 | DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", |
bfcb3514 |
79 | hvname) ); |
46e4b22b |
80 | hv_clear(hv); |
81 | sv_setiv(subgen, PL_sub_generation); |
82 | } |
6d4a7be2 |
83 | } |
84 | |
017a3ce5 |
85 | gvp = (GV**)hv_fetchs(stash, "ISA", FALSE); |
46e4b22b |
86 | |
3280af22 |
87 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
46e4b22b |
88 | if (!hv || !subgen) { |
017a3ce5 |
89 | gvp = (GV**)hv_fetchs(stash, "::ISA::CACHE::", TRUE); |
6d4a7be2 |
90 | |
91 | gv = *gvp; |
92 | |
93 | if (SvTYPE(gv) != SVt_PVGV) |
94 | gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); |
95 | |
46e4b22b |
96 | if (!hv) |
97 | hv = GvHVn(gv); |
98 | if (!subgen) { |
99 | subgen = newSViv(PL_sub_generation); |
100 | GvSV(gv) = subgen; |
101 | } |
6d4a7be2 |
102 | } |
46e4b22b |
103 | if (hv) { |
6d4a7be2 |
104 | SV** svp = AvARRAY(av); |
93965878 |
105 | /* NOTE: No support for tied ISA */ |
106 | I32 items = AvFILLp(av) + 1; |
6d4a7be2 |
107 | while (items--) { |
c4420975 |
108 | SV* const sv = *svp++; |
109 | HV* const basestash = gv_stashsv(sv, FALSE); |
6d4a7be2 |
110 | if (!basestash) { |
599cee73 |
111 | if (ckWARN(WARN_MISC)) |
9014280d |
112 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bfcb3514 |
113 | "Can't locate package %"SVf" for @%s::ISA", |
114 | sv, hvname); |
6d4a7be2 |
115 | continue; |
116 | } |
301daebc |
117 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
118 | len, level + 1)) { |
3280af22 |
119 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
120 | return &PL_sv_yes; |
6d4a7be2 |
121 | } |
122 | } |
3280af22 |
123 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 |
124 | } |
125 | } |
a1d407e8 |
126 | return &PL_sv_no; |
6d4a7be2 |
127 | } |
128 | |
954c1994 |
129 | /* |
ccfc67b7 |
130 | =head1 SV Manipulation Functions |
131 | |
954c1994 |
132 | =for apidoc sv_derived_from |
133 | |
134 | Returns a boolean indicating whether the SV is derived from the specified |
135 | class. This is the function that implements C<UNIVERSAL::isa>. It works |
136 | for class names as well as for objects. |
137 | |
138 | =cut |
139 | */ |
140 | |
55497cff |
141 | bool |
864dbfa3 |
142 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff |
143 | { |
97aff369 |
144 | dVAR; |
0b6f4f5c |
145 | HV *stash; |
46e4b22b |
146 | |
5b295bef |
147 | SvGETMAGIC(sv); |
55497cff |
148 | |
149 | if (SvROK(sv)) { |
0b6f4f5c |
150 | const char *type; |
55497cff |
151 | sv = SvRV(sv); |
152 | type = sv_reftype(sv,0); |
0b6f4f5c |
153 | if (type && strEQ(type,name)) |
154 | return TRUE; |
155 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; |
55497cff |
156 | } |
157 | else { |
158 | stash = gv_stashsv(sv, FALSE); |
159 | } |
46e4b22b |
160 | |
0b6f4f5c |
161 | if (stash) { |
162 | HV * const name_stash = gv_stashpv(name, FALSE); |
163 | return isa_lookup(stash, name, name_stash, strlen(name), 0) == &PL_sv_yes; |
164 | } |
165 | else |
166 | return FALSE; |
301daebc |
167 | |
55497cff |
168 | } |
169 | |
1b026014 |
170 | #include "XSUB.h" |
171 | |
27da23d5 |
172 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
173 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); |
174 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); |
439cb1c4 |
175 | XS(XS_version_new); |
176 | XS(XS_version_stringify); |
177 | XS(XS_version_numify); |
9137345a |
178 | XS(XS_version_normal); |
439cb1c4 |
179 | XS(XS_version_vcmp); |
180 | XS(XS_version_boolean); |
2dfd8427 |
181 | #ifdef HASATTRIBUTE_NORETURN |
182 | XS(XS_version_noop) __attribute__noreturn__; |
183 | #else |
439cb1c4 |
184 | XS(XS_version_noop); |
2dfd8427 |
185 | #endif |
c8d69e4a |
186 | XS(XS_version_is_alpha); |
137d6fc0 |
187 | XS(XS_version_qv); |
8800c35a |
188 | XS(XS_utf8_is_utf8); |
1b026014 |
189 | XS(XS_utf8_valid); |
190 | XS(XS_utf8_encode); |
191 | XS(XS_utf8_decode); |
192 | XS(XS_utf8_upgrade); |
193 | XS(XS_utf8_downgrade); |
194 | XS(XS_utf8_unicode_to_native); |
195 | XS(XS_utf8_native_to_unicode); |
29569577 |
196 | XS(XS_Internals_SvREADONLY); |
197 | XS(XS_Internals_SvREFCNT); |
f044d0d1 |
198 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 |
199 | XS(XS_PerlIO_get_layers); |
39cff0d9 |
200 | XS(XS_Regexp_DESTROY); |
9a7034eb |
201 | XS(XS_Internals_hash_seed); |
008fb0c0 |
202 | XS(XS_Internals_rehash_seed); |
05619474 |
203 | XS(XS_Internals_HvREHASH); |
e1234d8e |
204 | XS(XS_Internals_inc_sub_generation); |
0cb96387 |
205 | |
206 | void |
207 | Perl_boot_core_UNIVERSAL(pTHX) |
208 | { |
97aff369 |
209 | dVAR; |
157e3fc8 |
210 | static const char file[] = __FILE__; |
0cb96387 |
211 | |
212 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
213 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
214 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
439cb1c4 |
215 | { |
ad63d80f |
216 | /* register the overloading (type 'A') magic */ |
217 | PL_amagic_generation++; |
439cb1c4 |
218 | /* Make it findable via fetchmethod */ |
be2ebcad |
219 | newXS("version::()", XS_version_noop, file); |
439cb1c4 |
220 | newXS("version::new", XS_version_new, file); |
221 | newXS("version::(\"\"", XS_version_stringify, file); |
222 | newXS("version::stringify", XS_version_stringify, file); |
223 | newXS("version::(0+", XS_version_numify, file); |
224 | newXS("version::numify", XS_version_numify, file); |
9137345a |
225 | newXS("version::normal", XS_version_normal, file); |
439cb1c4 |
226 | newXS("version::(cmp", XS_version_vcmp, file); |
227 | newXS("version::(<=>", XS_version_vcmp, file); |
228 | newXS("version::vcmp", XS_version_vcmp, file); |
229 | newXS("version::(bool", XS_version_boolean, file); |
230 | newXS("version::boolean", XS_version_boolean, file); |
231 | newXS("version::(nomethod", XS_version_noop, file); |
232 | newXS("version::noop", XS_version_noop, file); |
c8d69e4a |
233 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 |
234 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 |
235 | } |
8800c35a |
236 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 |
237 | newXS("utf8::valid", XS_utf8_valid, file); |
238 | newXS("utf8::encode", XS_utf8_encode, file); |
239 | newXS("utf8::decode", XS_utf8_decode, file); |
240 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
241 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
242 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
243 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
29569577 |
244 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
245 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
dfd4ef2f |
246 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 |
247 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce |
248 | newXSproto("PerlIO::get_layers", |
249 | XS_PerlIO_get_layers, file, "*;@"); |
39cff0d9 |
250 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb |
251 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 |
252 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 |
253 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
e1234d8e |
254 | newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation, |
255 | file, ""); |
0cb96387 |
256 | } |
257 | |
55497cff |
258 | |
6d4a7be2 |
259 | XS(XS_UNIVERSAL_isa) |
260 | { |
97aff369 |
261 | dVAR; |
6d4a7be2 |
262 | dXSARGS; |
6d4a7be2 |
263 | |
264 | if (items != 2) |
cea2e8a9 |
265 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
c4420975 |
266 | else { |
267 | SV * const sv = ST(0); |
268 | const char *name; |
6d4a7be2 |
269 | |
c4420975 |
270 | SvGETMAGIC(sv); |
d3f7f2b2 |
271 | |
c4420975 |
272 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
273 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
274 | XSRETURN_UNDEF; |
f8f70380 |
275 | |
c4420975 |
276 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 |
277 | |
c4420975 |
278 | ST(0) = boolSV(sv_derived_from(sv, name)); |
279 | XSRETURN(1); |
280 | } |
6d4a7be2 |
281 | } |
282 | |
6d4a7be2 |
283 | XS(XS_UNIVERSAL_can) |
284 | { |
97aff369 |
285 | dVAR; |
6d4a7be2 |
286 | dXSARGS; |
287 | SV *sv; |
6867be6d |
288 | const char *name; |
6d4a7be2 |
289 | SV *rv; |
6f08146e |
290 | HV *pkg = NULL; |
6d4a7be2 |
291 | |
292 | if (items != 2) |
cea2e8a9 |
293 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
294 | |
295 | sv = ST(0); |
f8f70380 |
296 | |
5b295bef |
297 | SvGETMAGIC(sv); |
d3f7f2b2 |
298 | |
253ecd6d |
299 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
300 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
301 | XSRETURN_UNDEF; |
302 | |
0510663f |
303 | name = SvPV_nolen_const(ST(1)); |
3280af22 |
304 | rv = &PL_sv_undef; |
6d4a7be2 |
305 | |
46e4b22b |
306 | if (SvROK(sv)) { |
6f08146e |
307 | sv = (SV*)SvRV(sv); |
46e4b22b |
308 | if (SvOBJECT(sv)) |
6f08146e |
309 | pkg = SvSTASH(sv); |
310 | } |
311 | else { |
312 | pkg = gv_stashsv(sv, FALSE); |
313 | } |
314 | |
315 | if (pkg) { |
c4420975 |
316 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
dc848c6f |
317 | if (gv && isGV(gv)) |
318 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); |
6d4a7be2 |
319 | } |
320 | |
321 | ST(0) = rv; |
322 | XSRETURN(1); |
323 | } |
324 | |
6d4a7be2 |
325 | XS(XS_UNIVERSAL_VERSION) |
326 | { |
97aff369 |
327 | dVAR; |
6d4a7be2 |
328 | dXSARGS; |
329 | HV *pkg; |
330 | GV **gvp; |
331 | GV *gv; |
332 | SV *sv; |
e1ec3a88 |
333 | const char *undef; |
6d4a7be2 |
334 | |
1571675a |
335 | if (SvROK(ST(0))) { |
6d4a7be2 |
336 | sv = (SV*)SvRV(ST(0)); |
1571675a |
337 | if (!SvOBJECT(sv)) |
cea2e8a9 |
338 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 |
339 | pkg = SvSTASH(sv); |
340 | } |
341 | else { |
342 | pkg = gv_stashsv(ST(0), FALSE); |
343 | } |
344 | |
4608196e |
345 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
6d4a7be2 |
346 | |
0008872a |
347 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
c4420975 |
348 | SV * const nsv = sv_newmortal(); |
6d4a7be2 |
349 | sv_setsv(nsv, sv); |
350 | sv = nsv; |
137d6fc0 |
351 | if ( !sv_derived_from(sv, "version")) |
352 | upg_version(sv); |
c445ea15 |
353 | undef = NULL; |
6d4a7be2 |
354 | } |
355 | else { |
3280af22 |
356 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 |
357 | undef = "(undef)"; |
358 | } |
359 | |
1571675a |
360 | if (items > 1) { |
1571675a |
361 | SV *req = ST(1); |
362 | |
62658f4d |
363 | if (undef) { |
bfcb3514 |
364 | if (pkg) { |
c4420975 |
365 | const char * const name = HvNAME_get(pkg); |
a3b680e6 |
366 | Perl_croak(aTHX_ |
bfcb3514 |
367 | "%s does not define $%s::VERSION--version check failed", |
368 | name, name); |
369 | } else { |
a3b680e6 |
370 | Perl_croak(aTHX_ |
371 | "%s defines neither package nor VERSION--version check failed", |
0510663f |
372 | SvPVx_nolen_const(ST(0)) ); |
62658f4d |
373 | } |
374 | } |
ad63d80f |
375 | |
137d6fc0 |
376 | if ( !sv_derived_from(req, "version")) { |
377 | /* req may very well be R/O, so create a new object */ |
c4420975 |
378 | SV * const nsv = sv_newmortal(); |
137d6fc0 |
379 | sv_setsv(nsv, req); |
380 | req = nsv; |
381 | upg_version(req); |
382 | } |
1571675a |
383 | |
137d6fc0 |
384 | if ( vcmp( req, sv ) > 0 ) |
b9381830 |
385 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
bfcb3514 |
386 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
b9381830 |
387 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d |
388 | } |
6d4a7be2 |
389 | |
2b140d5b |
390 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 |
391 | ST(0) = vnumify(sv); |
13f8f398 |
392 | } else { |
393 | ST(0) = sv; |
b38a9dc5 |
394 | } |
6d4a7be2 |
395 | |
396 | XSRETURN(1); |
397 | } |
398 | |
439cb1c4 |
399 | XS(XS_version_new) |
400 | { |
97aff369 |
401 | dVAR; |
439cb1c4 |
402 | dXSARGS; |
129318bd |
403 | if (items > 3) |
439cb1c4 |
404 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
405 | SP -= items; |
406 | { |
137d6fc0 |
407 | SV *vs = ST(1); |
408 | SV *rv; |
c4420975 |
409 | const char * const classname = |
410 | sv_isobject(ST(0)) /* get the class if called as an object method */ |
411 | ? HvNAME(SvSTASH(SvRV(ST(0)))) |
412 | : (char *)SvPV_nolen(ST(0)); |
9137345a |
413 | |
414 | if ( items == 1 ) { |
415 | /* no parameter provided */ |
416 | if ( sv_isobject(ST(0)) ) { |
417 | /* copy existing object */ |
418 | vs = ST(0); |
419 | } |
420 | else { |
421 | /* create empty object */ |
422 | vs = sv_newmortal(); |
1946a074 |
423 | sv_setpvn(vs,"",0); |
9137345a |
424 | } |
425 | } |
426 | else if ( items == 3 ) { |
427 | vs = sv_newmortal(); |
cfd0369c |
428 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd |
429 | } |
439cb1c4 |
430 | |
137d6fc0 |
431 | rv = new_version(vs); |
0723351e |
432 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
433 | sv_bless(rv, gv_stashpv(classname,TRUE)); |
137d6fc0 |
434 | |
435 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
436 | PUTBACK; |
437 | return; |
438 | } |
439 | } |
440 | |
441 | XS(XS_version_stringify) |
442 | { |
97aff369 |
443 | dVAR; |
41be1fbd |
444 | dXSARGS; |
445 | if (items < 1) |
446 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
447 | SP -= items; |
448 | { |
7452cf6a |
449 | SV * lobj; |
41be1fbd |
450 | |
451 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
452 | lobj = SvRV(ST(0)); |
41be1fbd |
453 | } |
454 | else |
455 | Perl_croak(aTHX_ "lobj is not of type version"); |
456 | |
137d6fc0 |
457 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
458 | |
459 | PUTBACK; |
460 | return; |
461 | } |
439cb1c4 |
462 | } |
463 | |
464 | XS(XS_version_numify) |
465 | { |
97aff369 |
466 | dVAR; |
41be1fbd |
467 | dXSARGS; |
468 | if (items < 1) |
469 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
470 | SP -= items; |
471 | { |
7452cf6a |
472 | SV * lobj; |
41be1fbd |
473 | |
474 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
475 | lobj = SvRV(ST(0)); |
41be1fbd |
476 | } |
477 | else |
478 | Perl_croak(aTHX_ "lobj is not of type version"); |
479 | |
137d6fc0 |
480 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
481 | |
482 | PUTBACK; |
483 | return; |
484 | } |
439cb1c4 |
485 | } |
486 | |
9137345a |
487 | XS(XS_version_normal) |
488 | { |
97aff369 |
489 | dVAR; |
9137345a |
490 | dXSARGS; |
491 | if (items < 1) |
492 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); |
493 | SP -= items; |
494 | { |
7452cf6a |
495 | SV * lobj; |
9137345a |
496 | |
497 | if (sv_derived_from(ST(0), "version")) { |
498 | lobj = SvRV(ST(0)); |
499 | } |
500 | else |
501 | Perl_croak(aTHX_ "lobj is not of type version"); |
502 | |
503 | PUSHs(sv_2mortal(vnormal(lobj))); |
504 | |
505 | PUTBACK; |
506 | return; |
507 | } |
508 | } |
509 | |
439cb1c4 |
510 | XS(XS_version_vcmp) |
511 | { |
97aff369 |
512 | dVAR; |
41be1fbd |
513 | dXSARGS; |
514 | if (items < 1) |
515 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
516 | SP -= items; |
517 | { |
7452cf6a |
518 | SV * lobj; |
41be1fbd |
519 | |
520 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
521 | lobj = SvRV(ST(0)); |
41be1fbd |
522 | } |
523 | else |
524 | Perl_croak(aTHX_ "lobj is not of type version"); |
525 | |
526 | { |
527 | SV *rs; |
528 | SV *rvs; |
529 | SV * robj = ST(1); |
7452cf6a |
530 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd |
531 | |
532 | if ( ! sv_derived_from(robj, "version") ) |
533 | { |
534 | robj = new_version(robj); |
535 | } |
536 | rvs = SvRV(robj); |
537 | |
538 | if ( swap ) |
539 | { |
540 | rs = newSViv(vcmp(rvs,lobj)); |
541 | } |
542 | else |
543 | { |
544 | rs = newSViv(vcmp(lobj,rvs)); |
545 | } |
546 | |
137d6fc0 |
547 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
548 | } |
549 | |
550 | PUTBACK; |
551 | return; |
552 | } |
439cb1c4 |
553 | } |
554 | |
555 | XS(XS_version_boolean) |
556 | { |
97aff369 |
557 | dVAR; |
558 | dXSARGS; |
559 | if (items < 1) |
560 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
561 | SP -= items; |
c4420975 |
562 | if (sv_derived_from(ST(0), "version")) { |
563 | SV * const lobj = SvRV(ST(0)); |
396482e1 |
564 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
c4420975 |
565 | PUSHs(sv_2mortal(rs)); |
566 | PUTBACK; |
567 | return; |
568 | } |
569 | else |
570 | Perl_croak(aTHX_ "lobj is not of type version"); |
439cb1c4 |
571 | } |
572 | |
573 | XS(XS_version_noop) |
574 | { |
97aff369 |
575 | dVAR; |
2dfd8427 |
576 | dXSARGS; |
577 | if (items < 1) |
578 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
579 | if (sv_derived_from(ST(0), "version")) |
580 | Perl_croak(aTHX_ "operation not supported with version object"); |
581 | else |
582 | Perl_croak(aTHX_ "lobj is not of type version"); |
583 | #ifndef HASATTRIBUTE_NORETURN |
584 | XSRETURN_EMPTY; |
585 | #endif |
439cb1c4 |
586 | } |
587 | |
c8d69e4a |
588 | XS(XS_version_is_alpha) |
589 | { |
97aff369 |
590 | dVAR; |
c8d69e4a |
591 | dXSARGS; |
592 | if (items != 1) |
593 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
594 | SP -= items; |
c4420975 |
595 | if (sv_derived_from(ST(0), "version")) { |
596 | SV * const lobj = ST(0); |
597 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) |
598 | XSRETURN_YES; |
599 | else |
600 | XSRETURN_NO; |
c8d69e4a |
601 | PUTBACK; |
602 | return; |
603 | } |
c4420975 |
604 | else |
605 | Perl_croak(aTHX_ "lobj is not of type version"); |
c8d69e4a |
606 | } |
607 | |
137d6fc0 |
608 | XS(XS_version_qv) |
609 | { |
97aff369 |
610 | dVAR; |
137d6fc0 |
611 | dXSARGS; |
612 | if (items != 1) |
613 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
614 | SP -= items; |
615 | { |
616 | SV * ver = ST(0); |
c4420975 |
617 | if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ |
618 | SV * const vs = sv_newmortal(); |
137d6fc0 |
619 | char *version; |
620 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
621 | { |
622 | char tbuf[64]; |
86c11942 |
623 | const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
624 | version = savepvn(tbuf, len); |
137d6fc0 |
625 | } |
626 | else |
627 | { |
2e0de35c |
628 | version = savesvpv(ver); |
137d6fc0 |
629 | } |
630 | (void)scan_version(version,vs,TRUE); |
631 | Safefree(version); |
632 | |
633 | PUSHs(vs); |
634 | } |
635 | else |
636 | { |
637 | PUSHs(sv_2mortal(new_version(ver))); |
638 | } |
639 | |
640 | PUTBACK; |
641 | return; |
642 | } |
643 | } |
644 | |
8800c35a |
645 | XS(XS_utf8_is_utf8) |
646 | { |
97aff369 |
647 | dVAR; |
41be1fbd |
648 | dXSARGS; |
649 | if (items != 1) |
650 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
c4420975 |
651 | else { |
652 | const SV * const sv = ST(0); |
653 | if (SvUTF8(sv)) |
654 | XSRETURN_YES; |
655 | else |
656 | XSRETURN_NO; |
41be1fbd |
657 | } |
658 | XSRETURN_EMPTY; |
8800c35a |
659 | } |
660 | |
1b026014 |
661 | XS(XS_utf8_valid) |
662 | { |
97aff369 |
663 | dVAR; |
41be1fbd |
664 | dXSARGS; |
665 | if (items != 1) |
666 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
c4420975 |
667 | else { |
668 | SV * const sv = ST(0); |
669 | STRLEN len; |
670 | const char * const s = SvPV_const(sv,len); |
671 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
672 | XSRETURN_YES; |
673 | else |
674 | XSRETURN_NO; |
675 | } |
41be1fbd |
676 | XSRETURN_EMPTY; |
1b026014 |
677 | } |
678 | |
679 | XS(XS_utf8_encode) |
680 | { |
97aff369 |
681 | dVAR; |
1b026014 |
682 | dXSARGS; |
683 | if (items != 1) |
684 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
c4420975 |
685 | sv_utf8_encode(ST(0)); |
1b026014 |
686 | XSRETURN_EMPTY; |
687 | } |
688 | |
689 | XS(XS_utf8_decode) |
690 | { |
97aff369 |
691 | dVAR; |
1b026014 |
692 | dXSARGS; |
693 | if (items != 1) |
694 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
c4420975 |
695 | else { |
696 | SV * const sv = ST(0); |
6867be6d |
697 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
698 | ST(0) = boolSV(RETVAL); |
699 | sv_2mortal(ST(0)); |
700 | } |
701 | XSRETURN(1); |
702 | } |
703 | |
704 | XS(XS_utf8_upgrade) |
705 | { |
97aff369 |
706 | dVAR; |
1b026014 |
707 | dXSARGS; |
708 | if (items != 1) |
709 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
c4420975 |
710 | else { |
711 | SV * const sv = ST(0); |
1b026014 |
712 | STRLEN RETVAL; |
713 | dXSTARG; |
714 | |
715 | RETVAL = sv_utf8_upgrade(sv); |
716 | XSprePUSH; PUSHi((IV)RETVAL); |
717 | } |
718 | XSRETURN(1); |
719 | } |
720 | |
721 | XS(XS_utf8_downgrade) |
722 | { |
97aff369 |
723 | dVAR; |
1b026014 |
724 | dXSARGS; |
725 | if (items < 1 || items > 2) |
726 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
c4420975 |
727 | else { |
728 | SV * const sv = ST(0); |
6867be6d |
729 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
730 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
731 | |
1b026014 |
732 | ST(0) = boolSV(RETVAL); |
733 | sv_2mortal(ST(0)); |
734 | } |
735 | XSRETURN(1); |
736 | } |
737 | |
738 | XS(XS_utf8_native_to_unicode) |
739 | { |
97aff369 |
740 | dVAR; |
1b026014 |
741 | dXSARGS; |
6867be6d |
742 | const UV uv = SvUV(ST(0)); |
b7953727 |
743 | |
744 | if (items > 1) |
745 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
746 | |
1b026014 |
747 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
748 | XSRETURN(1); |
749 | } |
750 | |
751 | XS(XS_utf8_unicode_to_native) |
752 | { |
97aff369 |
753 | dVAR; |
1b026014 |
754 | dXSARGS; |
6867be6d |
755 | const UV uv = SvUV(ST(0)); |
b7953727 |
756 | |
757 | if (items > 1) |
758 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
759 | |
1b026014 |
760 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
761 | XSRETURN(1); |
762 | } |
763 | |
14a976d6 |
764 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
765 | { |
97aff369 |
766 | dVAR; |
29569577 |
767 | dXSARGS; |
c4420975 |
768 | SV * const sv = SvRV(ST(0)); |
6867be6d |
769 | |
29569577 |
770 | if (items == 1) { |
771 | if (SvREADONLY(sv)) |
772 | XSRETURN_YES; |
773 | else |
774 | XSRETURN_NO; |
775 | } |
776 | else if (items == 2) { |
777 | if (SvTRUE(ST(1))) { |
778 | SvREADONLY_on(sv); |
779 | XSRETURN_YES; |
780 | } |
781 | else { |
14a976d6 |
782 | /* I hope you really know what you are doing. */ |
29569577 |
783 | SvREADONLY_off(sv); |
784 | XSRETURN_NO; |
785 | } |
786 | } |
14a976d6 |
787 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
788 | } |
789 | |
14a976d6 |
790 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
791 | { |
97aff369 |
792 | dVAR; |
29569577 |
793 | dXSARGS; |
c4420975 |
794 | SV * const sv = SvRV(ST(0)); |
6867be6d |
795 | |
29569577 |
796 | if (items == 1) |
14a976d6 |
797 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
798 | else if (items == 2) { |
14a976d6 |
799 | /* I hope you really know what you are doing. */ |
29569577 |
800 | SvREFCNT(sv) = SvIV(ST(1)); |
801 | XSRETURN_IV(SvREFCNT(sv)); |
802 | } |
14a976d6 |
803 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
804 | } |
805 | |
f044d0d1 |
806 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
807 | { |
97aff369 |
808 | dVAR; |
dfd4ef2f |
809 | dXSARGS; |
6867be6d |
810 | |
3540d4ce |
811 | if (items != 1) |
812 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
c4420975 |
813 | else { |
814 | HV * const hv = (HV *) SvRV(ST(0)); |
815 | hv_clear_placeholders(hv); |
816 | XSRETURN(0); |
817 | } |
dfd4ef2f |
818 | } |
39f7a870 |
819 | |
39cff0d9 |
820 | XS(XS_Regexp_DESTROY) |
821 | { |
96a5add6 |
822 | PERL_UNUSED_CONTEXT; |
53c1dcc0 |
823 | PERL_UNUSED_ARG(cv); |
39cff0d9 |
824 | } |
825 | |
39f7a870 |
826 | XS(XS_PerlIO_get_layers) |
827 | { |
97aff369 |
828 | dVAR; |
39f7a870 |
829 | dXSARGS; |
830 | if (items < 1 || items % 2 == 0) |
831 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
832 | #ifdef USE_PERLIO |
39f7a870 |
833 | { |
834 | SV * sv; |
835 | GV * gv; |
836 | IO * io; |
837 | bool input = TRUE; |
838 | bool details = FALSE; |
839 | |
840 | if (items > 1) { |
c4420975 |
841 | SV * const *svp; |
39f7a870 |
842 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 |
843 | SV * const * const varp = svp; |
844 | SV * const * const valp = svp + 1; |
39f7a870 |
845 | STRLEN klen; |
c4420975 |
846 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 |
847 | |
848 | switch (*key) { |
849 | case 'i': |
850 | if (klen == 5 && memEQ(key, "input", 5)) { |
851 | input = SvTRUE(*valp); |
852 | break; |
853 | } |
854 | goto fail; |
855 | case 'o': |
856 | if (klen == 6 && memEQ(key, "output", 6)) { |
857 | input = !SvTRUE(*valp); |
858 | break; |
859 | } |
860 | goto fail; |
861 | case 'd': |
862 | if (klen == 7 && memEQ(key, "details", 7)) { |
863 | details = SvTRUE(*valp); |
864 | break; |
865 | } |
866 | goto fail; |
867 | default: |
868 | fail: |
869 | Perl_croak(aTHX_ |
870 | "get_layers: unknown argument '%s'", |
871 | key); |
872 | } |
873 | } |
874 | |
875 | SP -= (items - 1); |
876 | } |
877 | |
878 | sv = POPs; |
879 | gv = (GV*)sv; |
880 | |
881 | if (!isGV(sv)) { |
882 | if (SvROK(sv) && isGV(SvRV(sv))) |
883 | gv = (GV*)SvRV(sv); |
671d49be |
884 | else if (SvPOKp(sv)) |
f776e3cd |
885 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
39f7a870 |
886 | } |
887 | |
888 | if (gv && (io = GvIO(gv))) { |
889 | dTARGET; |
c4420975 |
890 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 |
891 | IoIFP(io) : IoOFP(io)); |
892 | I32 i; |
c4420975 |
893 | const I32 last = av_len(av); |
39f7a870 |
894 | I32 nitem = 0; |
895 | |
896 | for (i = last; i >= 0; i -= 3) { |
c4420975 |
897 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
898 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); |
899 | SV * const * const flgsvp = av_fetch(av, i, FALSE); |
39f7a870 |
900 | |
c4420975 |
901 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
902 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); |
903 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
39f7a870 |
904 | |
905 | if (details) { |
ec3bab8e |
906 | XPUSHs(namok |
907 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) |
908 | : &PL_sv_undef); |
909 | XPUSHs(argok |
910 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) |
911 | : &PL_sv_undef); |
39f7a870 |
912 | if (flgok) |
913 | XPUSHi(SvIVX(*flgsvp)); |
914 | else |
915 | XPUSHs(&PL_sv_undef); |
916 | nitem += 3; |
917 | } |
918 | else { |
919 | if (namok && argok) |
920 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
921 | *namsvp, *argsvp)); |
922 | else if (namok) |
923 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
924 | else |
925 | XPUSHs(&PL_sv_undef); |
926 | nitem++; |
927 | if (flgok) { |
c4420975 |
928 | const IV flags = SvIVX(*flgsvp); |
39f7a870 |
929 | |
930 | if (flags & PERLIO_F_UTF8) { |
396482e1 |
931 | XPUSHs(newSVpvs("utf8")); |
39f7a870 |
932 | nitem++; |
933 | } |
934 | } |
935 | } |
936 | } |
937 | |
938 | SvREFCNT_dec(av); |
939 | |
940 | XSRETURN(nitem); |
941 | } |
942 | } |
5fef3b4a |
943 | #endif |
39f7a870 |
944 | |
945 | XSRETURN(0); |
946 | } |
947 | |
9a7034eb |
948 | XS(XS_Internals_hash_seed) |
c910b28a |
949 | { |
97aff369 |
950 | dVAR; |
c85d3f85 |
951 | /* Using dXSARGS would also have dITEM and dSP, |
952 | * which define 2 unused local variables. */ |
557b887a |
953 | dAXMARK; |
53c1dcc0 |
954 | PERL_UNUSED_ARG(cv); |
ad73156c |
955 | PERL_UNUSED_VAR(mark); |
81eaca17 |
956 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
957 | } |
958 | |
008fb0c0 |
959 | XS(XS_Internals_rehash_seed) |
8e90d776 |
960 | { |
97aff369 |
961 | dVAR; |
8e90d776 |
962 | /* Using dXSARGS would also have dITEM and dSP, |
963 | * which define 2 unused local variables. */ |
557b887a |
964 | dAXMARK; |
53c1dcc0 |
965 | PERL_UNUSED_ARG(cv); |
ad73156c |
966 | PERL_UNUSED_VAR(mark); |
008fb0c0 |
967 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
968 | } |
969 | |
05619474 |
970 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
971 | { |
97aff369 |
972 | dVAR; |
05619474 |
973 | dXSARGS; |
974 | if (SvROK(ST(0))) { |
c4420975 |
975 | const HV * const hv = (HV *) SvRV(ST(0)); |
05619474 |
976 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
977 | if (HvREHASH(hv)) |
978 | XSRETURN_YES; |
979 | else |
980 | XSRETURN_NO; |
981 | } |
982 | } |
983 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
984 | } |
241d1a3b |
985 | |
e1234d8e |
986 | XS(XS_Internals_inc_sub_generation) |
987 | { |
97aff369 |
988 | dVAR; |
e1234d8e |
989 | /* Using dXSARGS would also have dITEM and dSP, |
990 | * which define 2 unused local variables. */ |
991 | dAXMARK; |
992 | PERL_UNUSED_ARG(cv); |
993 | PERL_UNUSED_VAR(mark); |
994 | ++PL_sub_generation; |
995 | XSRETURN_EMPTY; |
996 | } |
997 | |
241d1a3b |
998 | /* |
999 | * Local variables: |
1000 | * c-indentation-style: bsd |
1001 | * c-basic-offset: 4 |
1002 | * indent-tabs-mode: t |
1003 | * End: |
1004 | * |
37442d52 |
1005 | * ex: set ts=8 sts=4 sw=4 noet: |
1006 | */ |