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 | |
a9ec700e |
34 | STATIC bool |
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)) |
a9ec700e |
49 | return TRUE; |
6d4a7be2 |
50 | |
bfcb3514 |
51 | hvname = HvNAME_get(stash); |
52 | |
53 | if (strEQ(hvname, name)) |
a9ec700e |
54 | return TRUE; |
6d4a7be2 |
55 | |
a1d407e8 |
56 | if (strEQ(name, "UNIVERSAL")) |
a9ec700e |
57 | return TRUE; |
a1d407e8 |
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) ); |
a9ec700e |
74 | return (sv == &PL_sv_yes); |
46e4b22b |
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", |
95b63a38 |
114 | (void*)sv, hvname); |
6d4a7be2 |
115 | continue; |
116 | } |
a9ec700e |
117 | if (isa_lookup(basestash, name, name_stash, len, level + 1)) { |
3280af22 |
118 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
a9ec700e |
119 | return TRUE; |
6d4a7be2 |
120 | } |
121 | } |
3280af22 |
122 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 |
123 | } |
124 | } |
a9ec700e |
125 | return FALSE; |
6d4a7be2 |
126 | } |
127 | |
954c1994 |
128 | /* |
ccfc67b7 |
129 | =head1 SV Manipulation Functions |
130 | |
954c1994 |
131 | =for apidoc sv_derived_from |
132 | |
133 | Returns a boolean indicating whether the SV is derived from the specified |
134 | class. This is the function that implements C<UNIVERSAL::isa>. It works |
135 | for class names as well as for objects. |
136 | |
137 | =cut |
138 | */ |
139 | |
55497cff |
140 | bool |
864dbfa3 |
141 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff |
142 | { |
97aff369 |
143 | dVAR; |
0b6f4f5c |
144 | HV *stash; |
46e4b22b |
145 | |
5b295bef |
146 | SvGETMAGIC(sv); |
55497cff |
147 | |
148 | if (SvROK(sv)) { |
0b6f4f5c |
149 | const char *type; |
55497cff |
150 | sv = SvRV(sv); |
151 | type = sv_reftype(sv,0); |
0b6f4f5c |
152 | if (type && strEQ(type,name)) |
153 | return TRUE; |
154 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; |
55497cff |
155 | } |
156 | else { |
157 | stash = gv_stashsv(sv, FALSE); |
158 | } |
46e4b22b |
159 | |
0b6f4f5c |
160 | if (stash) { |
161 | HV * const name_stash = gv_stashpv(name, FALSE); |
a9ec700e |
162 | return isa_lookup(stash, name, name_stash, strlen(name), 0); |
0b6f4f5c |
163 | } |
164 | else |
165 | return FALSE; |
301daebc |
166 | |
55497cff |
167 | } |
168 | |
1b026014 |
169 | #include "XSUB.h" |
170 | |
27da23d5 |
171 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
172 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); |
173 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); |
439cb1c4 |
174 | XS(XS_version_new); |
175 | XS(XS_version_stringify); |
176 | XS(XS_version_numify); |
9137345a |
177 | XS(XS_version_normal); |
439cb1c4 |
178 | XS(XS_version_vcmp); |
179 | XS(XS_version_boolean); |
2dfd8427 |
180 | #ifdef HASATTRIBUTE_NORETURN |
181 | XS(XS_version_noop) __attribute__noreturn__; |
182 | #else |
439cb1c4 |
183 | XS(XS_version_noop); |
2dfd8427 |
184 | #endif |
c8d69e4a |
185 | XS(XS_version_is_alpha); |
137d6fc0 |
186 | XS(XS_version_qv); |
8800c35a |
187 | XS(XS_utf8_is_utf8); |
1b026014 |
188 | XS(XS_utf8_valid); |
189 | XS(XS_utf8_encode); |
190 | XS(XS_utf8_decode); |
191 | XS(XS_utf8_upgrade); |
192 | XS(XS_utf8_downgrade); |
193 | XS(XS_utf8_unicode_to_native); |
194 | XS(XS_utf8_native_to_unicode); |
29569577 |
195 | XS(XS_Internals_SvREADONLY); |
196 | XS(XS_Internals_SvREFCNT); |
f044d0d1 |
197 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 |
198 | XS(XS_PerlIO_get_layers); |
39cff0d9 |
199 | XS(XS_Regexp_DESTROY); |
9a7034eb |
200 | XS(XS_Internals_hash_seed); |
008fb0c0 |
201 | XS(XS_Internals_rehash_seed); |
05619474 |
202 | XS(XS_Internals_HvREHASH); |
e1234d8e |
203 | XS(XS_Internals_inc_sub_generation); |
0cb96387 |
204 | |
205 | void |
206 | Perl_boot_core_UNIVERSAL(pTHX) |
207 | { |
97aff369 |
208 | dVAR; |
157e3fc8 |
209 | static const char file[] = __FILE__; |
0cb96387 |
210 | |
211 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
212 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
213 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
439cb1c4 |
214 | { |
ad63d80f |
215 | /* register the overloading (type 'A') magic */ |
216 | PL_amagic_generation++; |
439cb1c4 |
217 | /* Make it findable via fetchmethod */ |
be2ebcad |
218 | newXS("version::()", XS_version_noop, file); |
439cb1c4 |
219 | newXS("version::new", XS_version_new, file); |
220 | newXS("version::(\"\"", XS_version_stringify, file); |
221 | newXS("version::stringify", XS_version_stringify, file); |
222 | newXS("version::(0+", XS_version_numify, file); |
223 | newXS("version::numify", XS_version_numify, file); |
9137345a |
224 | newXS("version::normal", XS_version_normal, file); |
439cb1c4 |
225 | newXS("version::(cmp", XS_version_vcmp, file); |
226 | newXS("version::(<=>", XS_version_vcmp, file); |
227 | newXS("version::vcmp", XS_version_vcmp, file); |
228 | newXS("version::(bool", XS_version_boolean, file); |
229 | newXS("version::boolean", XS_version_boolean, file); |
230 | newXS("version::(nomethod", XS_version_noop, file); |
231 | newXS("version::noop", XS_version_noop, file); |
c8d69e4a |
232 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 |
233 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 |
234 | } |
8800c35a |
235 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 |
236 | newXS("utf8::valid", XS_utf8_valid, file); |
237 | newXS("utf8::encode", XS_utf8_encode, file); |
238 | newXS("utf8::decode", XS_utf8_decode, file); |
239 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
240 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
241 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
242 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
29569577 |
243 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
244 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
dfd4ef2f |
245 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 |
246 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce |
247 | newXSproto("PerlIO::get_layers", |
248 | XS_PerlIO_get_layers, file, "*;@"); |
39cff0d9 |
249 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb |
250 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 |
251 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 |
252 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
e1234d8e |
253 | newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation, |
254 | file, ""); |
0cb96387 |
255 | } |
256 | |
55497cff |
257 | |
6d4a7be2 |
258 | XS(XS_UNIVERSAL_isa) |
259 | { |
97aff369 |
260 | dVAR; |
6d4a7be2 |
261 | dXSARGS; |
6d4a7be2 |
262 | |
263 | if (items != 2) |
cea2e8a9 |
264 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
c4420975 |
265 | else { |
266 | SV * const sv = ST(0); |
267 | const char *name; |
6d4a7be2 |
268 | |
c4420975 |
269 | SvGETMAGIC(sv); |
d3f7f2b2 |
270 | |
c4420975 |
271 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
272 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
273 | XSRETURN_UNDEF; |
f8f70380 |
274 | |
c4420975 |
275 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 |
276 | |
c4420975 |
277 | ST(0) = boolSV(sv_derived_from(sv, name)); |
278 | XSRETURN(1); |
279 | } |
6d4a7be2 |
280 | } |
281 | |
6d4a7be2 |
282 | XS(XS_UNIVERSAL_can) |
283 | { |
97aff369 |
284 | dVAR; |
6d4a7be2 |
285 | dXSARGS; |
286 | SV *sv; |
6867be6d |
287 | const char *name; |
6d4a7be2 |
288 | SV *rv; |
6f08146e |
289 | HV *pkg = NULL; |
6d4a7be2 |
290 | |
291 | if (items != 2) |
cea2e8a9 |
292 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
293 | |
294 | sv = ST(0); |
f8f70380 |
295 | |
5b295bef |
296 | SvGETMAGIC(sv); |
d3f7f2b2 |
297 | |
253ecd6d |
298 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
299 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
300 | XSRETURN_UNDEF; |
301 | |
0510663f |
302 | name = SvPV_nolen_const(ST(1)); |
3280af22 |
303 | rv = &PL_sv_undef; |
6d4a7be2 |
304 | |
46e4b22b |
305 | if (SvROK(sv)) { |
6f08146e |
306 | sv = (SV*)SvRV(sv); |
46e4b22b |
307 | if (SvOBJECT(sv)) |
6f08146e |
308 | pkg = SvSTASH(sv); |
309 | } |
310 | else { |
311 | pkg = gv_stashsv(sv, FALSE); |
312 | } |
313 | |
314 | if (pkg) { |
c4420975 |
315 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
dc848c6f |
316 | if (gv && isGV(gv)) |
317 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); |
6d4a7be2 |
318 | } |
319 | |
320 | ST(0) = rv; |
321 | XSRETURN(1); |
322 | } |
323 | |
6d4a7be2 |
324 | XS(XS_UNIVERSAL_VERSION) |
325 | { |
97aff369 |
326 | dVAR; |
6d4a7be2 |
327 | dXSARGS; |
328 | HV *pkg; |
329 | GV **gvp; |
330 | GV *gv; |
331 | SV *sv; |
e1ec3a88 |
332 | const char *undef; |
6d4a7be2 |
333 | |
1571675a |
334 | if (SvROK(ST(0))) { |
6d4a7be2 |
335 | sv = (SV*)SvRV(ST(0)); |
1571675a |
336 | if (!SvOBJECT(sv)) |
cea2e8a9 |
337 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 |
338 | pkg = SvSTASH(sv); |
339 | } |
340 | else { |
341 | pkg = gv_stashsv(ST(0), FALSE); |
342 | } |
343 | |
4608196e |
344 | gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL; |
6d4a7be2 |
345 | |
0008872a |
346 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
c4420975 |
347 | SV * const nsv = sv_newmortal(); |
6d4a7be2 |
348 | sv_setsv(nsv, sv); |
349 | sv = nsv; |
137d6fc0 |
350 | if ( !sv_derived_from(sv, "version")) |
351 | upg_version(sv); |
c445ea15 |
352 | undef = NULL; |
6d4a7be2 |
353 | } |
354 | else { |
3280af22 |
355 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 |
356 | undef = "(undef)"; |
357 | } |
358 | |
1571675a |
359 | if (items > 1) { |
1571675a |
360 | SV *req = ST(1); |
361 | |
62658f4d |
362 | if (undef) { |
bfcb3514 |
363 | if (pkg) { |
c4420975 |
364 | const char * const name = HvNAME_get(pkg); |
a3b680e6 |
365 | Perl_croak(aTHX_ |
bfcb3514 |
366 | "%s does not define $%s::VERSION--version check failed", |
367 | name, name); |
368 | } else { |
a3b680e6 |
369 | Perl_croak(aTHX_ |
370 | "%s defines neither package nor VERSION--version check failed", |
0510663f |
371 | SvPVx_nolen_const(ST(0)) ); |
62658f4d |
372 | } |
373 | } |
ad63d80f |
374 | |
137d6fc0 |
375 | if ( !sv_derived_from(req, "version")) { |
376 | /* req may very well be R/O, so create a new object */ |
c4420975 |
377 | SV * const nsv = sv_newmortal(); |
137d6fc0 |
378 | sv_setsv(nsv, req); |
379 | req = nsv; |
380 | upg_version(req); |
381 | } |
1571675a |
382 | |
137d6fc0 |
383 | if ( vcmp( req, sv ) > 0 ) |
b9381830 |
384 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
95b63a38 |
385 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
386 | (void*)vnumify(req), |
387 | (void*)vnormal(req), |
388 | (void*)vnumify(sv), |
389 | (void*)vnormal(sv)); |
2d8e6c8d |
390 | } |
6d4a7be2 |
391 | |
2b140d5b |
392 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 |
393 | ST(0) = vnumify(sv); |
13f8f398 |
394 | } else { |
395 | ST(0) = sv; |
b38a9dc5 |
396 | } |
6d4a7be2 |
397 | |
398 | XSRETURN(1); |
399 | } |
400 | |
439cb1c4 |
401 | XS(XS_version_new) |
402 | { |
97aff369 |
403 | dVAR; |
439cb1c4 |
404 | dXSARGS; |
129318bd |
405 | if (items > 3) |
439cb1c4 |
406 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
407 | SP -= items; |
408 | { |
137d6fc0 |
409 | SV *vs = ST(1); |
410 | SV *rv; |
c4420975 |
411 | const char * const classname = |
412 | sv_isobject(ST(0)) /* get the class if called as an object method */ |
413 | ? HvNAME(SvSTASH(SvRV(ST(0)))) |
414 | : (char *)SvPV_nolen(ST(0)); |
9137345a |
415 | |
416 | if ( items == 1 ) { |
417 | /* no parameter provided */ |
418 | if ( sv_isobject(ST(0)) ) { |
419 | /* copy existing object */ |
420 | vs = ST(0); |
421 | } |
422 | else { |
423 | /* create empty object */ |
424 | vs = sv_newmortal(); |
1946a074 |
425 | sv_setpvn(vs,"",0); |
9137345a |
426 | } |
427 | } |
428 | else if ( items == 3 ) { |
429 | vs = sv_newmortal(); |
cfd0369c |
430 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd |
431 | } |
439cb1c4 |
432 | |
137d6fc0 |
433 | rv = new_version(vs); |
0723351e |
434 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
435 | sv_bless(rv, gv_stashpv(classname,TRUE)); |
137d6fc0 |
436 | |
437 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
438 | PUTBACK; |
439 | return; |
440 | } |
441 | } |
442 | |
443 | XS(XS_version_stringify) |
444 | { |
97aff369 |
445 | dVAR; |
41be1fbd |
446 | dXSARGS; |
447 | if (items < 1) |
448 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
449 | SP -= items; |
450 | { |
7452cf6a |
451 | SV * lobj; |
41be1fbd |
452 | |
453 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
454 | lobj = SvRV(ST(0)); |
41be1fbd |
455 | } |
456 | else |
457 | Perl_croak(aTHX_ "lobj is not of type version"); |
458 | |
137d6fc0 |
459 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
460 | |
461 | PUTBACK; |
462 | return; |
463 | } |
439cb1c4 |
464 | } |
465 | |
466 | XS(XS_version_numify) |
467 | { |
97aff369 |
468 | dVAR; |
41be1fbd |
469 | dXSARGS; |
470 | if (items < 1) |
471 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
472 | SP -= items; |
473 | { |
7452cf6a |
474 | SV * lobj; |
41be1fbd |
475 | |
476 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
477 | lobj = SvRV(ST(0)); |
41be1fbd |
478 | } |
479 | else |
480 | Perl_croak(aTHX_ "lobj is not of type version"); |
481 | |
137d6fc0 |
482 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
483 | |
484 | PUTBACK; |
485 | return; |
486 | } |
439cb1c4 |
487 | } |
488 | |
9137345a |
489 | XS(XS_version_normal) |
490 | { |
97aff369 |
491 | dVAR; |
9137345a |
492 | dXSARGS; |
493 | if (items < 1) |
494 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); |
495 | SP -= items; |
496 | { |
7452cf6a |
497 | SV * lobj; |
9137345a |
498 | |
499 | if (sv_derived_from(ST(0), "version")) { |
500 | lobj = SvRV(ST(0)); |
501 | } |
502 | else |
503 | Perl_croak(aTHX_ "lobj is not of type version"); |
504 | |
505 | PUSHs(sv_2mortal(vnormal(lobj))); |
506 | |
507 | PUTBACK; |
508 | return; |
509 | } |
510 | } |
511 | |
439cb1c4 |
512 | XS(XS_version_vcmp) |
513 | { |
97aff369 |
514 | dVAR; |
41be1fbd |
515 | dXSARGS; |
516 | if (items < 1) |
517 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
518 | SP -= items; |
519 | { |
7452cf6a |
520 | SV * lobj; |
41be1fbd |
521 | |
522 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
523 | lobj = SvRV(ST(0)); |
41be1fbd |
524 | } |
525 | else |
526 | Perl_croak(aTHX_ "lobj is not of type version"); |
527 | |
528 | { |
529 | SV *rs; |
530 | SV *rvs; |
531 | SV * robj = ST(1); |
7452cf6a |
532 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd |
533 | |
534 | if ( ! sv_derived_from(robj, "version") ) |
535 | { |
536 | robj = new_version(robj); |
537 | } |
538 | rvs = SvRV(robj); |
539 | |
540 | if ( swap ) |
541 | { |
542 | rs = newSViv(vcmp(rvs,lobj)); |
543 | } |
544 | else |
545 | { |
546 | rs = newSViv(vcmp(lobj,rvs)); |
547 | } |
548 | |
137d6fc0 |
549 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
550 | } |
551 | |
552 | PUTBACK; |
553 | return; |
554 | } |
439cb1c4 |
555 | } |
556 | |
557 | XS(XS_version_boolean) |
558 | { |
97aff369 |
559 | dVAR; |
560 | dXSARGS; |
561 | if (items < 1) |
562 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
563 | SP -= items; |
c4420975 |
564 | if (sv_derived_from(ST(0), "version")) { |
565 | SV * const lobj = SvRV(ST(0)); |
396482e1 |
566 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
c4420975 |
567 | PUSHs(sv_2mortal(rs)); |
568 | PUTBACK; |
569 | return; |
570 | } |
571 | else |
572 | Perl_croak(aTHX_ "lobj is not of type version"); |
439cb1c4 |
573 | } |
574 | |
575 | XS(XS_version_noop) |
576 | { |
97aff369 |
577 | dVAR; |
2dfd8427 |
578 | dXSARGS; |
579 | if (items < 1) |
580 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
581 | if (sv_derived_from(ST(0), "version")) |
582 | Perl_croak(aTHX_ "operation not supported with version object"); |
583 | else |
584 | Perl_croak(aTHX_ "lobj is not of type version"); |
585 | #ifndef HASATTRIBUTE_NORETURN |
586 | XSRETURN_EMPTY; |
587 | #endif |
439cb1c4 |
588 | } |
589 | |
c8d69e4a |
590 | XS(XS_version_is_alpha) |
591 | { |
97aff369 |
592 | dVAR; |
c8d69e4a |
593 | dXSARGS; |
594 | if (items != 1) |
595 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
596 | SP -= items; |
c4420975 |
597 | if (sv_derived_from(ST(0), "version")) { |
598 | SV * const lobj = ST(0); |
599 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) |
600 | XSRETURN_YES; |
601 | else |
602 | XSRETURN_NO; |
c8d69e4a |
603 | PUTBACK; |
604 | return; |
605 | } |
c4420975 |
606 | else |
607 | Perl_croak(aTHX_ "lobj is not of type version"); |
c8d69e4a |
608 | } |
609 | |
137d6fc0 |
610 | XS(XS_version_qv) |
611 | { |
97aff369 |
612 | dVAR; |
137d6fc0 |
613 | dXSARGS; |
614 | if (items != 1) |
615 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
616 | SP -= items; |
617 | { |
618 | SV * ver = ST(0); |
c4420975 |
619 | if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ |
620 | SV * const vs = sv_newmortal(); |
137d6fc0 |
621 | char *version; |
622 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
623 | { |
624 | char tbuf[64]; |
e80fed9d |
625 | #ifdef USE_SNPRINTF |
626 | const STRLEN len = snprintf(tbuf, sizeof(tbuf), "%.9"NVgf, SvNVX(ver)); |
627 | #else |
628 | const STRLEN len = my_sprintf(tbuf, "%.9"NVgf, SvNVX(ver)); |
629 | #endif /* #ifdef USE_SNPRINTF */ |
86c11942 |
630 | version = savepvn(tbuf, len); |
137d6fc0 |
631 | } |
632 | else |
633 | { |
2e0de35c |
634 | version = savesvpv(ver); |
137d6fc0 |
635 | } |
636 | (void)scan_version(version,vs,TRUE); |
637 | Safefree(version); |
638 | |
639 | PUSHs(vs); |
640 | } |
641 | else |
642 | { |
643 | PUSHs(sv_2mortal(new_version(ver))); |
644 | } |
645 | |
646 | PUTBACK; |
647 | return; |
648 | } |
649 | } |
650 | |
8800c35a |
651 | XS(XS_utf8_is_utf8) |
652 | { |
97aff369 |
653 | dVAR; |
41be1fbd |
654 | dXSARGS; |
655 | if (items != 1) |
656 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
c4420975 |
657 | else { |
658 | const SV * const sv = ST(0); |
659 | if (SvUTF8(sv)) |
660 | XSRETURN_YES; |
661 | else |
662 | XSRETURN_NO; |
41be1fbd |
663 | } |
664 | XSRETURN_EMPTY; |
8800c35a |
665 | } |
666 | |
1b026014 |
667 | XS(XS_utf8_valid) |
668 | { |
97aff369 |
669 | dVAR; |
41be1fbd |
670 | dXSARGS; |
671 | if (items != 1) |
672 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
c4420975 |
673 | else { |
674 | SV * const sv = ST(0); |
675 | STRLEN len; |
676 | const char * const s = SvPV_const(sv,len); |
677 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
678 | XSRETURN_YES; |
679 | else |
680 | XSRETURN_NO; |
681 | } |
41be1fbd |
682 | XSRETURN_EMPTY; |
1b026014 |
683 | } |
684 | |
685 | XS(XS_utf8_encode) |
686 | { |
97aff369 |
687 | dVAR; |
1b026014 |
688 | dXSARGS; |
689 | if (items != 1) |
690 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
c4420975 |
691 | sv_utf8_encode(ST(0)); |
1b026014 |
692 | XSRETURN_EMPTY; |
693 | } |
694 | |
695 | XS(XS_utf8_decode) |
696 | { |
97aff369 |
697 | dVAR; |
1b026014 |
698 | dXSARGS; |
699 | if (items != 1) |
700 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
c4420975 |
701 | else { |
702 | SV * const sv = ST(0); |
6867be6d |
703 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
704 | ST(0) = boolSV(RETVAL); |
705 | sv_2mortal(ST(0)); |
706 | } |
707 | XSRETURN(1); |
708 | } |
709 | |
710 | XS(XS_utf8_upgrade) |
711 | { |
97aff369 |
712 | dVAR; |
1b026014 |
713 | dXSARGS; |
714 | if (items != 1) |
715 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
c4420975 |
716 | else { |
717 | SV * const sv = ST(0); |
1b026014 |
718 | STRLEN RETVAL; |
719 | dXSTARG; |
720 | |
721 | RETVAL = sv_utf8_upgrade(sv); |
722 | XSprePUSH; PUSHi((IV)RETVAL); |
723 | } |
724 | XSRETURN(1); |
725 | } |
726 | |
727 | XS(XS_utf8_downgrade) |
728 | { |
97aff369 |
729 | dVAR; |
1b026014 |
730 | dXSARGS; |
731 | if (items < 1 || items > 2) |
732 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
c4420975 |
733 | else { |
734 | SV * const sv = ST(0); |
6867be6d |
735 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
736 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
737 | |
1b026014 |
738 | ST(0) = boolSV(RETVAL); |
739 | sv_2mortal(ST(0)); |
740 | } |
741 | XSRETURN(1); |
742 | } |
743 | |
744 | XS(XS_utf8_native_to_unicode) |
745 | { |
97aff369 |
746 | dVAR; |
1b026014 |
747 | dXSARGS; |
6867be6d |
748 | const UV uv = SvUV(ST(0)); |
b7953727 |
749 | |
750 | if (items > 1) |
751 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
752 | |
1b026014 |
753 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
754 | XSRETURN(1); |
755 | } |
756 | |
757 | XS(XS_utf8_unicode_to_native) |
758 | { |
97aff369 |
759 | dVAR; |
1b026014 |
760 | dXSARGS; |
6867be6d |
761 | const UV uv = SvUV(ST(0)); |
b7953727 |
762 | |
763 | if (items > 1) |
764 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
765 | |
1b026014 |
766 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
767 | XSRETURN(1); |
768 | } |
769 | |
14a976d6 |
770 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
771 | { |
97aff369 |
772 | dVAR; |
29569577 |
773 | dXSARGS; |
c4420975 |
774 | SV * const sv = SvRV(ST(0)); |
6867be6d |
775 | |
29569577 |
776 | if (items == 1) { |
777 | if (SvREADONLY(sv)) |
778 | XSRETURN_YES; |
779 | else |
780 | XSRETURN_NO; |
781 | } |
782 | else if (items == 2) { |
783 | if (SvTRUE(ST(1))) { |
784 | SvREADONLY_on(sv); |
785 | XSRETURN_YES; |
786 | } |
787 | else { |
14a976d6 |
788 | /* I hope you really know what you are doing. */ |
29569577 |
789 | SvREADONLY_off(sv); |
790 | XSRETURN_NO; |
791 | } |
792 | } |
14a976d6 |
793 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
794 | } |
795 | |
14a976d6 |
796 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
797 | { |
97aff369 |
798 | dVAR; |
29569577 |
799 | dXSARGS; |
c4420975 |
800 | SV * const sv = SvRV(ST(0)); |
6867be6d |
801 | |
29569577 |
802 | if (items == 1) |
14a976d6 |
803 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
804 | else if (items == 2) { |
14a976d6 |
805 | /* I hope you really know what you are doing. */ |
29569577 |
806 | SvREFCNT(sv) = SvIV(ST(1)); |
807 | XSRETURN_IV(SvREFCNT(sv)); |
808 | } |
14a976d6 |
809 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
810 | } |
811 | |
f044d0d1 |
812 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
813 | { |
97aff369 |
814 | dVAR; |
dfd4ef2f |
815 | dXSARGS; |
6867be6d |
816 | |
3540d4ce |
817 | if (items != 1) |
818 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
c4420975 |
819 | else { |
820 | HV * const hv = (HV *) SvRV(ST(0)); |
821 | hv_clear_placeholders(hv); |
822 | XSRETURN(0); |
823 | } |
dfd4ef2f |
824 | } |
39f7a870 |
825 | |
39cff0d9 |
826 | XS(XS_Regexp_DESTROY) |
827 | { |
96a5add6 |
828 | PERL_UNUSED_CONTEXT; |
53c1dcc0 |
829 | PERL_UNUSED_ARG(cv); |
39cff0d9 |
830 | } |
831 | |
39f7a870 |
832 | XS(XS_PerlIO_get_layers) |
833 | { |
97aff369 |
834 | dVAR; |
39f7a870 |
835 | dXSARGS; |
836 | if (items < 1 || items % 2 == 0) |
837 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
838 | #ifdef USE_PERLIO |
39f7a870 |
839 | { |
840 | SV * sv; |
841 | GV * gv; |
842 | IO * io; |
843 | bool input = TRUE; |
844 | bool details = FALSE; |
845 | |
846 | if (items > 1) { |
c4420975 |
847 | SV * const *svp; |
39f7a870 |
848 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 |
849 | SV * const * const varp = svp; |
850 | SV * const * const valp = svp + 1; |
39f7a870 |
851 | STRLEN klen; |
c4420975 |
852 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 |
853 | |
854 | switch (*key) { |
855 | case 'i': |
856 | if (klen == 5 && memEQ(key, "input", 5)) { |
857 | input = SvTRUE(*valp); |
858 | break; |
859 | } |
860 | goto fail; |
861 | case 'o': |
862 | if (klen == 6 && memEQ(key, "output", 6)) { |
863 | input = !SvTRUE(*valp); |
864 | break; |
865 | } |
866 | goto fail; |
867 | case 'd': |
868 | if (klen == 7 && memEQ(key, "details", 7)) { |
869 | details = SvTRUE(*valp); |
870 | break; |
871 | } |
872 | goto fail; |
873 | default: |
874 | fail: |
875 | Perl_croak(aTHX_ |
876 | "get_layers: unknown argument '%s'", |
877 | key); |
878 | } |
879 | } |
880 | |
881 | SP -= (items - 1); |
882 | } |
883 | |
884 | sv = POPs; |
885 | gv = (GV*)sv; |
886 | |
887 | if (!isGV(sv)) { |
888 | if (SvROK(sv) && isGV(SvRV(sv))) |
889 | gv = (GV*)SvRV(sv); |
671d49be |
890 | else if (SvPOKp(sv)) |
f776e3cd |
891 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
39f7a870 |
892 | } |
893 | |
894 | if (gv && (io = GvIO(gv))) { |
895 | dTARGET; |
c4420975 |
896 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 |
897 | IoIFP(io) : IoOFP(io)); |
898 | I32 i; |
c4420975 |
899 | const I32 last = av_len(av); |
39f7a870 |
900 | I32 nitem = 0; |
901 | |
902 | for (i = last; i >= 0; i -= 3) { |
c4420975 |
903 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
904 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); |
905 | SV * const * const flgsvp = av_fetch(av, i, FALSE); |
39f7a870 |
906 | |
c4420975 |
907 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
908 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); |
909 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
39f7a870 |
910 | |
911 | if (details) { |
ec3bab8e |
912 | XPUSHs(namok |
913 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) |
914 | : &PL_sv_undef); |
915 | XPUSHs(argok |
916 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) |
917 | : &PL_sv_undef); |
39f7a870 |
918 | if (flgok) |
919 | XPUSHi(SvIVX(*flgsvp)); |
920 | else |
921 | XPUSHs(&PL_sv_undef); |
922 | nitem += 3; |
923 | } |
924 | else { |
925 | if (namok && argok) |
926 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
95b63a38 |
927 | (void*)*namsvp, |
928 | (void*)*argsvp)); |
39f7a870 |
929 | else if (namok) |
95b63a38 |
930 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, |
931 | (void*)*namsvp)); |
39f7a870 |
932 | else |
933 | XPUSHs(&PL_sv_undef); |
934 | nitem++; |
935 | if (flgok) { |
c4420975 |
936 | const IV flags = SvIVX(*flgsvp); |
39f7a870 |
937 | |
938 | if (flags & PERLIO_F_UTF8) { |
396482e1 |
939 | XPUSHs(newSVpvs("utf8")); |
39f7a870 |
940 | nitem++; |
941 | } |
942 | } |
943 | } |
944 | } |
945 | |
946 | SvREFCNT_dec(av); |
947 | |
948 | XSRETURN(nitem); |
949 | } |
950 | } |
5fef3b4a |
951 | #endif |
39f7a870 |
952 | |
953 | XSRETURN(0); |
954 | } |
955 | |
9a7034eb |
956 | XS(XS_Internals_hash_seed) |
c910b28a |
957 | { |
97aff369 |
958 | dVAR; |
c85d3f85 |
959 | /* Using dXSARGS would also have dITEM and dSP, |
960 | * which define 2 unused local variables. */ |
557b887a |
961 | dAXMARK; |
53c1dcc0 |
962 | PERL_UNUSED_ARG(cv); |
ad73156c |
963 | PERL_UNUSED_VAR(mark); |
81eaca17 |
964 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
965 | } |
966 | |
008fb0c0 |
967 | XS(XS_Internals_rehash_seed) |
8e90d776 |
968 | { |
97aff369 |
969 | dVAR; |
8e90d776 |
970 | /* Using dXSARGS would also have dITEM and dSP, |
971 | * which define 2 unused local variables. */ |
557b887a |
972 | dAXMARK; |
53c1dcc0 |
973 | PERL_UNUSED_ARG(cv); |
ad73156c |
974 | PERL_UNUSED_VAR(mark); |
008fb0c0 |
975 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
976 | } |
977 | |
05619474 |
978 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
979 | { |
97aff369 |
980 | dVAR; |
05619474 |
981 | dXSARGS; |
982 | if (SvROK(ST(0))) { |
c4420975 |
983 | const HV * const hv = (HV *) SvRV(ST(0)); |
05619474 |
984 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
985 | if (HvREHASH(hv)) |
986 | XSRETURN_YES; |
987 | else |
988 | XSRETURN_NO; |
989 | } |
990 | } |
991 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
992 | } |
241d1a3b |
993 | |
e1234d8e |
994 | XS(XS_Internals_inc_sub_generation) |
995 | { |
97aff369 |
996 | dVAR; |
e1234d8e |
997 | /* Using dXSARGS would also have dITEM and dSP, |
998 | * which define 2 unused local variables. */ |
999 | dAXMARK; |
1000 | PERL_UNUSED_ARG(cv); |
1001 | PERL_UNUSED_VAR(mark); |
1002 | ++PL_sub_generation; |
1003 | XSRETURN_EMPTY; |
1004 | } |
1005 | |
241d1a3b |
1006 | /* |
1007 | * Local variables: |
1008 | * c-indentation-style: bsd |
1009 | * c-basic-offset: 4 |
1010 | * indent-tabs-mode: t |
1011 | * End: |
1012 | * |
37442d52 |
1013 | * ex: set ts=8 sts=4 sw=4 noet: |
1014 | */ |