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 | |
6885da0e |
133 | Returns a boolean indicating whether the SV is derived from the specified class |
134 | I<at the C level>. To check derivation at the Perl level, call C<isa()> as a |
135 | normal Perl method. |
954c1994 |
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 */ |
c8a14fb6 |
418 | if ( sv_isobject(ST(0)) ) |
419 | { |
9137345a |
420 | /* create empty object */ |
421 | vs = sv_newmortal(); |
1946a074 |
422 | sv_setpvn(vs,"",0); |
9137345a |
423 | } |
424 | } |
425 | else if ( items == 3 ) { |
426 | vs = sv_newmortal(); |
cfd0369c |
427 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd |
428 | } |
439cb1c4 |
429 | |
137d6fc0 |
430 | rv = new_version(vs); |
0723351e |
431 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
432 | sv_bless(rv, gv_stashpv(classname,TRUE)); |
137d6fc0 |
433 | |
434 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
435 | PUTBACK; |
436 | return; |
437 | } |
438 | } |
439 | |
440 | XS(XS_version_stringify) |
441 | { |
97aff369 |
442 | dVAR; |
41be1fbd |
443 | dXSARGS; |
444 | if (items < 1) |
445 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
446 | SP -= items; |
447 | { |
7452cf6a |
448 | SV * lobj; |
41be1fbd |
449 | |
450 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
451 | lobj = SvRV(ST(0)); |
41be1fbd |
452 | } |
453 | else |
454 | Perl_croak(aTHX_ "lobj is not of type version"); |
455 | |
137d6fc0 |
456 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
457 | |
458 | PUTBACK; |
459 | return; |
460 | } |
439cb1c4 |
461 | } |
462 | |
463 | XS(XS_version_numify) |
464 | { |
97aff369 |
465 | dVAR; |
41be1fbd |
466 | dXSARGS; |
467 | if (items < 1) |
468 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
469 | SP -= items; |
470 | { |
7452cf6a |
471 | SV * lobj; |
41be1fbd |
472 | |
473 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
474 | lobj = SvRV(ST(0)); |
41be1fbd |
475 | } |
476 | else |
477 | Perl_croak(aTHX_ "lobj is not of type version"); |
478 | |
137d6fc0 |
479 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
480 | |
481 | PUTBACK; |
482 | return; |
483 | } |
439cb1c4 |
484 | } |
485 | |
9137345a |
486 | XS(XS_version_normal) |
487 | { |
97aff369 |
488 | dVAR; |
9137345a |
489 | dXSARGS; |
490 | if (items < 1) |
491 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); |
492 | SP -= items; |
493 | { |
7452cf6a |
494 | SV * lobj; |
9137345a |
495 | |
496 | if (sv_derived_from(ST(0), "version")) { |
497 | lobj = SvRV(ST(0)); |
498 | } |
499 | else |
500 | Perl_croak(aTHX_ "lobj is not of type version"); |
501 | |
502 | PUSHs(sv_2mortal(vnormal(lobj))); |
503 | |
504 | PUTBACK; |
505 | return; |
506 | } |
507 | } |
508 | |
439cb1c4 |
509 | XS(XS_version_vcmp) |
510 | { |
97aff369 |
511 | dVAR; |
41be1fbd |
512 | dXSARGS; |
513 | if (items < 1) |
514 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
515 | SP -= items; |
516 | { |
7452cf6a |
517 | SV * lobj; |
41be1fbd |
518 | |
519 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
520 | lobj = SvRV(ST(0)); |
41be1fbd |
521 | } |
522 | else |
523 | Perl_croak(aTHX_ "lobj is not of type version"); |
524 | |
525 | { |
526 | SV *rs; |
527 | SV *rvs; |
528 | SV * robj = ST(1); |
7452cf6a |
529 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd |
530 | |
531 | if ( ! sv_derived_from(robj, "version") ) |
532 | { |
533 | robj = new_version(robj); |
534 | } |
535 | rvs = SvRV(robj); |
536 | |
537 | if ( swap ) |
538 | { |
539 | rs = newSViv(vcmp(rvs,lobj)); |
540 | } |
541 | else |
542 | { |
543 | rs = newSViv(vcmp(lobj,rvs)); |
544 | } |
545 | |
137d6fc0 |
546 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
547 | } |
548 | |
549 | PUTBACK; |
550 | return; |
551 | } |
439cb1c4 |
552 | } |
553 | |
554 | XS(XS_version_boolean) |
555 | { |
97aff369 |
556 | dVAR; |
557 | dXSARGS; |
558 | if (items < 1) |
559 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
560 | SP -= items; |
c4420975 |
561 | if (sv_derived_from(ST(0), "version")) { |
562 | SV * const lobj = SvRV(ST(0)); |
396482e1 |
563 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvs("0"))) ); |
c4420975 |
564 | PUSHs(sv_2mortal(rs)); |
565 | PUTBACK; |
566 | return; |
567 | } |
568 | else |
569 | Perl_croak(aTHX_ "lobj is not of type version"); |
439cb1c4 |
570 | } |
571 | |
572 | XS(XS_version_noop) |
573 | { |
97aff369 |
574 | dVAR; |
2dfd8427 |
575 | dXSARGS; |
576 | if (items < 1) |
577 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
578 | if (sv_derived_from(ST(0), "version")) |
579 | Perl_croak(aTHX_ "operation not supported with version object"); |
580 | else |
581 | Perl_croak(aTHX_ "lobj is not of type version"); |
582 | #ifndef HASATTRIBUTE_NORETURN |
583 | XSRETURN_EMPTY; |
584 | #endif |
439cb1c4 |
585 | } |
586 | |
c8d69e4a |
587 | XS(XS_version_is_alpha) |
588 | { |
97aff369 |
589 | dVAR; |
c8d69e4a |
590 | dXSARGS; |
591 | if (items != 1) |
592 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
593 | SP -= items; |
c4420975 |
594 | if (sv_derived_from(ST(0), "version")) { |
595 | SV * const lobj = ST(0); |
596 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) |
597 | XSRETURN_YES; |
598 | else |
599 | XSRETURN_NO; |
c8d69e4a |
600 | PUTBACK; |
601 | return; |
602 | } |
c4420975 |
603 | else |
604 | Perl_croak(aTHX_ "lobj is not of type version"); |
c8d69e4a |
605 | } |
606 | |
137d6fc0 |
607 | XS(XS_version_qv) |
608 | { |
97aff369 |
609 | dVAR; |
137d6fc0 |
610 | dXSARGS; |
611 | if (items != 1) |
612 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
613 | SP -= items; |
614 | { |
615 | SV * ver = ST(0); |
c4420975 |
616 | if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ |
617 | SV * const vs = sv_newmortal(); |
137d6fc0 |
618 | char *version; |
619 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
620 | { |
621 | char tbuf[64]; |
d9fad198 |
622 | const STRLEN len = my_snprintf(tbuf, sizeof(tbuf), "%.9"NVgf, SvNVX(ver)); |
86c11942 |
623 | version = savepvn(tbuf, len); |
137d6fc0 |
624 | } |
625 | else |
626 | { |
2e0de35c |
627 | version = savesvpv(ver); |
137d6fc0 |
628 | } |
629 | (void)scan_version(version,vs,TRUE); |
630 | Safefree(version); |
631 | |
632 | PUSHs(vs); |
633 | } |
634 | else |
635 | { |
636 | PUSHs(sv_2mortal(new_version(ver))); |
637 | } |
638 | |
639 | PUTBACK; |
640 | return; |
641 | } |
642 | } |
643 | |
8800c35a |
644 | XS(XS_utf8_is_utf8) |
645 | { |
97aff369 |
646 | dVAR; |
41be1fbd |
647 | dXSARGS; |
648 | if (items != 1) |
649 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
c4420975 |
650 | else { |
651 | const SV * const sv = ST(0); |
652 | if (SvUTF8(sv)) |
653 | XSRETURN_YES; |
654 | else |
655 | XSRETURN_NO; |
41be1fbd |
656 | } |
657 | XSRETURN_EMPTY; |
8800c35a |
658 | } |
659 | |
1b026014 |
660 | XS(XS_utf8_valid) |
661 | { |
97aff369 |
662 | dVAR; |
41be1fbd |
663 | dXSARGS; |
664 | if (items != 1) |
665 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
c4420975 |
666 | else { |
667 | SV * const sv = ST(0); |
668 | STRLEN len; |
669 | const char * const s = SvPV_const(sv,len); |
670 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
671 | XSRETURN_YES; |
672 | else |
673 | XSRETURN_NO; |
674 | } |
41be1fbd |
675 | XSRETURN_EMPTY; |
1b026014 |
676 | } |
677 | |
678 | XS(XS_utf8_encode) |
679 | { |
97aff369 |
680 | dVAR; |
1b026014 |
681 | dXSARGS; |
682 | if (items != 1) |
683 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
c4420975 |
684 | sv_utf8_encode(ST(0)); |
1b026014 |
685 | XSRETURN_EMPTY; |
686 | } |
687 | |
688 | XS(XS_utf8_decode) |
689 | { |
97aff369 |
690 | dVAR; |
1b026014 |
691 | dXSARGS; |
692 | if (items != 1) |
693 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
c4420975 |
694 | else { |
695 | SV * const sv = ST(0); |
6867be6d |
696 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
697 | ST(0) = boolSV(RETVAL); |
698 | sv_2mortal(ST(0)); |
699 | } |
700 | XSRETURN(1); |
701 | } |
702 | |
703 | XS(XS_utf8_upgrade) |
704 | { |
97aff369 |
705 | dVAR; |
1b026014 |
706 | dXSARGS; |
707 | if (items != 1) |
708 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
c4420975 |
709 | else { |
710 | SV * const sv = ST(0); |
1b026014 |
711 | STRLEN RETVAL; |
712 | dXSTARG; |
713 | |
714 | RETVAL = sv_utf8_upgrade(sv); |
715 | XSprePUSH; PUSHi((IV)RETVAL); |
716 | } |
717 | XSRETURN(1); |
718 | } |
719 | |
720 | XS(XS_utf8_downgrade) |
721 | { |
97aff369 |
722 | dVAR; |
1b026014 |
723 | dXSARGS; |
724 | if (items < 1 || items > 2) |
725 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
c4420975 |
726 | else { |
727 | SV * const sv = ST(0); |
6867be6d |
728 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
729 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
730 | |
1b026014 |
731 | ST(0) = boolSV(RETVAL); |
732 | sv_2mortal(ST(0)); |
733 | } |
734 | XSRETURN(1); |
735 | } |
736 | |
737 | XS(XS_utf8_native_to_unicode) |
738 | { |
97aff369 |
739 | dVAR; |
1b026014 |
740 | dXSARGS; |
6867be6d |
741 | const UV uv = SvUV(ST(0)); |
b7953727 |
742 | |
743 | if (items > 1) |
744 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
745 | |
1b026014 |
746 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
747 | XSRETURN(1); |
748 | } |
749 | |
750 | XS(XS_utf8_unicode_to_native) |
751 | { |
97aff369 |
752 | dVAR; |
1b026014 |
753 | dXSARGS; |
6867be6d |
754 | const UV uv = SvUV(ST(0)); |
b7953727 |
755 | |
756 | if (items > 1) |
757 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
758 | |
1b026014 |
759 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
760 | XSRETURN(1); |
761 | } |
762 | |
14a976d6 |
763 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
764 | { |
97aff369 |
765 | dVAR; |
29569577 |
766 | dXSARGS; |
c4420975 |
767 | SV * const sv = SvRV(ST(0)); |
6867be6d |
768 | |
29569577 |
769 | if (items == 1) { |
770 | if (SvREADONLY(sv)) |
771 | XSRETURN_YES; |
772 | else |
773 | XSRETURN_NO; |
774 | } |
775 | else if (items == 2) { |
776 | if (SvTRUE(ST(1))) { |
777 | SvREADONLY_on(sv); |
778 | XSRETURN_YES; |
779 | } |
780 | else { |
14a976d6 |
781 | /* I hope you really know what you are doing. */ |
29569577 |
782 | SvREADONLY_off(sv); |
783 | XSRETURN_NO; |
784 | } |
785 | } |
14a976d6 |
786 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
787 | } |
788 | |
14a976d6 |
789 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
790 | { |
97aff369 |
791 | dVAR; |
29569577 |
792 | dXSARGS; |
c4420975 |
793 | SV * const sv = SvRV(ST(0)); |
6867be6d |
794 | |
29569577 |
795 | if (items == 1) |
14a976d6 |
796 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
797 | else if (items == 2) { |
14a976d6 |
798 | /* I hope you really know what you are doing. */ |
29569577 |
799 | SvREFCNT(sv) = SvIV(ST(1)); |
800 | XSRETURN_IV(SvREFCNT(sv)); |
801 | } |
14a976d6 |
802 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
803 | } |
804 | |
f044d0d1 |
805 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
806 | { |
97aff369 |
807 | dVAR; |
dfd4ef2f |
808 | dXSARGS; |
6867be6d |
809 | |
3540d4ce |
810 | if (items != 1) |
811 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
c4420975 |
812 | else { |
813 | HV * const hv = (HV *) SvRV(ST(0)); |
814 | hv_clear_placeholders(hv); |
815 | XSRETURN(0); |
816 | } |
dfd4ef2f |
817 | } |
39f7a870 |
818 | |
39cff0d9 |
819 | XS(XS_Regexp_DESTROY) |
820 | { |
96a5add6 |
821 | PERL_UNUSED_CONTEXT; |
53c1dcc0 |
822 | PERL_UNUSED_ARG(cv); |
39cff0d9 |
823 | } |
824 | |
39f7a870 |
825 | XS(XS_PerlIO_get_layers) |
826 | { |
97aff369 |
827 | dVAR; |
39f7a870 |
828 | dXSARGS; |
829 | if (items < 1 || items % 2 == 0) |
830 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
831 | #ifdef USE_PERLIO |
39f7a870 |
832 | { |
833 | SV * sv; |
834 | GV * gv; |
835 | IO * io; |
836 | bool input = TRUE; |
837 | bool details = FALSE; |
838 | |
839 | if (items > 1) { |
c4420975 |
840 | SV * const *svp; |
39f7a870 |
841 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 |
842 | SV * const * const varp = svp; |
843 | SV * const * const valp = svp + 1; |
39f7a870 |
844 | STRLEN klen; |
c4420975 |
845 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 |
846 | |
847 | switch (*key) { |
848 | case 'i': |
849 | if (klen == 5 && memEQ(key, "input", 5)) { |
850 | input = SvTRUE(*valp); |
851 | break; |
852 | } |
853 | goto fail; |
854 | case 'o': |
855 | if (klen == 6 && memEQ(key, "output", 6)) { |
856 | input = !SvTRUE(*valp); |
857 | break; |
858 | } |
859 | goto fail; |
860 | case 'd': |
861 | if (klen == 7 && memEQ(key, "details", 7)) { |
862 | details = SvTRUE(*valp); |
863 | break; |
864 | } |
865 | goto fail; |
866 | default: |
867 | fail: |
868 | Perl_croak(aTHX_ |
869 | "get_layers: unknown argument '%s'", |
870 | key); |
871 | } |
872 | } |
873 | |
874 | SP -= (items - 1); |
875 | } |
876 | |
877 | sv = POPs; |
878 | gv = (GV*)sv; |
879 | |
880 | if (!isGV(sv)) { |
881 | if (SvROK(sv) && isGV(SvRV(sv))) |
882 | gv = (GV*)SvRV(sv); |
671d49be |
883 | else if (SvPOKp(sv)) |
f776e3cd |
884 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
39f7a870 |
885 | } |
886 | |
887 | if (gv && (io = GvIO(gv))) { |
888 | dTARGET; |
c4420975 |
889 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 |
890 | IoIFP(io) : IoOFP(io)); |
891 | I32 i; |
c4420975 |
892 | const I32 last = av_len(av); |
39f7a870 |
893 | I32 nitem = 0; |
894 | |
895 | for (i = last; i >= 0; i -= 3) { |
c4420975 |
896 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
897 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); |
898 | SV * const * const flgsvp = av_fetch(av, i, FALSE); |
39f7a870 |
899 | |
c4420975 |
900 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
901 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); |
902 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
39f7a870 |
903 | |
904 | if (details) { |
ec3bab8e |
905 | XPUSHs(namok |
906 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) |
907 | : &PL_sv_undef); |
908 | XPUSHs(argok |
909 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) |
910 | : &PL_sv_undef); |
39f7a870 |
911 | if (flgok) |
912 | XPUSHi(SvIVX(*flgsvp)); |
913 | else |
914 | XPUSHs(&PL_sv_undef); |
915 | nitem += 3; |
916 | } |
917 | else { |
918 | if (namok && argok) |
919 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
95b63a38 |
920 | (void*)*namsvp, |
921 | (void*)*argsvp)); |
39f7a870 |
922 | else if (namok) |
95b63a38 |
923 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, |
924 | (void*)*namsvp)); |
39f7a870 |
925 | else |
926 | XPUSHs(&PL_sv_undef); |
927 | nitem++; |
928 | if (flgok) { |
c4420975 |
929 | const IV flags = SvIVX(*flgsvp); |
39f7a870 |
930 | |
931 | if (flags & PERLIO_F_UTF8) { |
396482e1 |
932 | XPUSHs(newSVpvs("utf8")); |
39f7a870 |
933 | nitem++; |
934 | } |
935 | } |
936 | } |
937 | } |
938 | |
939 | SvREFCNT_dec(av); |
940 | |
941 | XSRETURN(nitem); |
942 | } |
943 | } |
5fef3b4a |
944 | #endif |
39f7a870 |
945 | |
946 | XSRETURN(0); |
947 | } |
948 | |
9a7034eb |
949 | XS(XS_Internals_hash_seed) |
c910b28a |
950 | { |
97aff369 |
951 | dVAR; |
c85d3f85 |
952 | /* Using dXSARGS would also have dITEM and dSP, |
953 | * which define 2 unused local variables. */ |
557b887a |
954 | dAXMARK; |
53c1dcc0 |
955 | PERL_UNUSED_ARG(cv); |
ad73156c |
956 | PERL_UNUSED_VAR(mark); |
81eaca17 |
957 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
958 | } |
959 | |
008fb0c0 |
960 | XS(XS_Internals_rehash_seed) |
8e90d776 |
961 | { |
97aff369 |
962 | dVAR; |
8e90d776 |
963 | /* Using dXSARGS would also have dITEM and dSP, |
964 | * which define 2 unused local variables. */ |
557b887a |
965 | dAXMARK; |
53c1dcc0 |
966 | PERL_UNUSED_ARG(cv); |
ad73156c |
967 | PERL_UNUSED_VAR(mark); |
008fb0c0 |
968 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
969 | } |
970 | |
05619474 |
971 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
972 | { |
97aff369 |
973 | dVAR; |
05619474 |
974 | dXSARGS; |
975 | if (SvROK(ST(0))) { |
c4420975 |
976 | const HV * const hv = (HV *) SvRV(ST(0)); |
05619474 |
977 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
978 | if (HvREHASH(hv)) |
979 | XSRETURN_YES; |
980 | else |
981 | XSRETURN_NO; |
982 | } |
983 | } |
984 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
985 | } |
241d1a3b |
986 | |
e1234d8e |
987 | XS(XS_Internals_inc_sub_generation) |
988 | { |
97aff369 |
989 | dVAR; |
e1234d8e |
990 | /* Using dXSARGS would also have dITEM and dSP, |
991 | * which define 2 unused local variables. */ |
992 | dAXMARK; |
993 | PERL_UNUSED_ARG(cv); |
994 | PERL_UNUSED_VAR(mark); |
995 | ++PL_sub_generation; |
996 | XSRETURN_EMPTY; |
997 | } |
998 | |
241d1a3b |
999 | /* |
1000 | * Local variables: |
1001 | * c-indentation-style: bsd |
1002 | * c-basic-offset: 4 |
1003 | * indent-tabs-mode: t |
1004 | * End: |
1005 | * |
37442d52 |
1006 | * ex: set ts=8 sts=4 sw=4 noet: |
1007 | */ |