Commit | Line | Data |
d6376244 |
1 | /* universal.c |
2 | * |
b5f8cc5c |
3 | * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
241d1a3b |
4 | * 2005, by Larry Wall and others |
d6376244 |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. |
8 | * |
9 | */ |
10 | |
d31a8517 |
11 | /* |
12 | * "The roots of those mountains must be roots indeed; there must be |
13 | * great secrets buried there which have not been discovered since the |
14 | * beginning." --Gandalf, relating Gollum's story |
15 | */ |
16 | |
166f8a29 |
17 | /* This file contains the code that implements the functions in Perl's |
18 | * UNIVERSAL package, such as UNIVERSAL->can(). |
19 | */ |
20 | |
6d4a7be2 |
21 | #include "EXTERN.h" |
864dbfa3 |
22 | #define PERL_IN_UNIVERSAL_C |
6d4a7be2 |
23 | #include "perl.h" |
6d4a7be2 |
24 | |
39f7a870 |
25 | #ifdef USE_PERLIO |
26 | #include "perliol.h" /* For the PERLIO_F_XXX */ |
27 | #endif |
28 | |
6d4a7be2 |
29 | /* |
30 | * Contributed by Graham Barr <Graham.Barr@tiuk.ti.com> |
31 | * The main guts of traverse_isa was actually copied from gv_fetchmeth |
32 | */ |
33 | |
76e3520e |
34 | STATIC SV * |
301daebc |
35 | S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash, |
36 | int len, int level) |
6d4a7be2 |
37 | { |
38 | AV* av; |
39 | GV* gv; |
40 | GV** gvp; |
41 | HV* hv = Nullhv; |
46e4b22b |
42 | SV* subgen = Nullsv; |
bfcb3514 |
43 | const char *hvname; |
6d4a7be2 |
44 | |
301daebc |
45 | /* A stash/class can go by many names (ie. User == main::User), so |
46 | we compare the stash itself just in case */ |
47 | if (name_stash && (stash == name_stash)) |
48 | return &PL_sv_yes; |
6d4a7be2 |
49 | |
bfcb3514 |
50 | hvname = HvNAME_get(stash); |
51 | |
52 | if (strEQ(hvname, name)) |
3280af22 |
53 | return &PL_sv_yes; |
6d4a7be2 |
54 | |
a1d407e8 |
55 | if (strEQ(name, "UNIVERSAL")) |
56 | return &PL_sv_yes; |
57 | |
6d4a7be2 |
58 | if (level > 100) |
46e4b22b |
59 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
bfcb3514 |
60 | hvname); |
6d4a7be2 |
61 | |
62 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE); |
63 | |
46e4b22b |
64 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv)) |
65 | && (hv = GvHV(gv))) |
66 | { |
eb160463 |
67 | if (SvIV(subgen) == (IV)PL_sub_generation) { |
46e4b22b |
68 | SV* sv; |
69 | SV** svp = (SV**)hv_fetch(hv, name, len, FALSE); |
70 | if (svp && (sv = *svp) != (SV*)&PL_sv_undef) { |
71 | DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n", |
bfcb3514 |
72 | name, hvname) ); |
46e4b22b |
73 | return sv; |
74 | } |
75 | } |
76 | else { |
77 | DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", |
bfcb3514 |
78 | hvname) ); |
46e4b22b |
79 | hv_clear(hv); |
80 | sv_setiv(subgen, PL_sub_generation); |
81 | } |
6d4a7be2 |
82 | } |
83 | |
84 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
46e4b22b |
85 | |
3280af22 |
86 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
46e4b22b |
87 | if (!hv || !subgen) { |
6d4a7be2 |
88 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE); |
89 | |
90 | gv = *gvp; |
91 | |
92 | if (SvTYPE(gv) != SVt_PVGV) |
93 | gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); |
94 | |
46e4b22b |
95 | if (!hv) |
96 | hv = GvHVn(gv); |
97 | if (!subgen) { |
98 | subgen = newSViv(PL_sub_generation); |
99 | GvSV(gv) = subgen; |
100 | } |
6d4a7be2 |
101 | } |
46e4b22b |
102 | if (hv) { |
6d4a7be2 |
103 | SV** svp = AvARRAY(av); |
93965878 |
104 | /* NOTE: No support for tied ISA */ |
105 | I32 items = AvFILLp(av) + 1; |
6d4a7be2 |
106 | while (items--) { |
107 | SV* sv = *svp++; |
108 | HV* basestash = gv_stashsv(sv, FALSE); |
109 | if (!basestash) { |
599cee73 |
110 | if (ckWARN(WARN_MISC)) |
9014280d |
111 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bfcb3514 |
112 | "Can't locate package %"SVf" for @%s::ISA", |
113 | sv, hvname); |
6d4a7be2 |
114 | continue; |
115 | } |
301daebc |
116 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
117 | len, level + 1)) { |
3280af22 |
118 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
119 | return &PL_sv_yes; |
6d4a7be2 |
120 | } |
121 | } |
3280af22 |
122 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 |
123 | } |
124 | } |
a1d407e8 |
125 | return &PL_sv_no; |
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 | { |
a3b680e6 |
143 | const char *type = Nullch; |
144 | HV *stash = Nullhv; |
301daebc |
145 | HV *name_stash; |
46e4b22b |
146 | |
55497cff |
147 | if (SvGMAGICAL(sv)) |
148 | mg_get(sv) ; |
149 | |
150 | if (SvROK(sv)) { |
151 | sv = SvRV(sv); |
152 | type = sv_reftype(sv,0); |
46e4b22b |
153 | if (SvOBJECT(sv)) |
55497cff |
154 | stash = SvSTASH(sv); |
155 | } |
156 | else { |
157 | stash = gv_stashsv(sv, FALSE); |
158 | } |
46e4b22b |
159 | |
301daebc |
160 | name_stash = gv_stashpv(name, FALSE); |
161 | |
55497cff |
162 | return (type && strEQ(type,name)) || |
301daebc |
163 | (stash && isa_lookup(stash, name, name_stash, strlen(name), 0) |
164 | == &PL_sv_yes) |
55497cff |
165 | ? TRUE |
166 | : FALSE ; |
55497cff |
167 | } |
168 | |
1b026014 |
169 | #include "XSUB.h" |
170 | |
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); |
0cb96387 |
203 | |
204 | void |
205 | Perl_boot_core_UNIVERSAL(pTHX) |
206 | { |
e1ec3a88 |
207 | const char file[] = __FILE__; |
0cb96387 |
208 | |
209 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
210 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
211 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
439cb1c4 |
212 | { |
ad63d80f |
213 | /* register the overloading (type 'A') magic */ |
214 | PL_amagic_generation++; |
439cb1c4 |
215 | /* Make it findable via fetchmethod */ |
be2ebcad |
216 | newXS("version::()", XS_version_noop, file); |
439cb1c4 |
217 | newXS("version::new", XS_version_new, file); |
218 | newXS("version::(\"\"", XS_version_stringify, file); |
219 | newXS("version::stringify", XS_version_stringify, file); |
220 | newXS("version::(0+", XS_version_numify, file); |
221 | newXS("version::numify", XS_version_numify, file); |
9137345a |
222 | newXS("version::normal", XS_version_normal, file); |
439cb1c4 |
223 | newXS("version::(cmp", XS_version_vcmp, file); |
224 | newXS("version::(<=>", XS_version_vcmp, file); |
225 | newXS("version::vcmp", XS_version_vcmp, file); |
226 | newXS("version::(bool", XS_version_boolean, file); |
227 | newXS("version::boolean", XS_version_boolean, file); |
228 | newXS("version::(nomethod", XS_version_noop, file); |
229 | newXS("version::noop", XS_version_noop, file); |
c8d69e4a |
230 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 |
231 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 |
232 | } |
8800c35a |
233 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 |
234 | newXS("utf8::valid", XS_utf8_valid, file); |
235 | newXS("utf8::encode", XS_utf8_encode, file); |
236 | newXS("utf8::decode", XS_utf8_decode, file); |
237 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
238 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
239 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
240 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
29569577 |
241 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
242 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
dfd4ef2f |
243 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 |
244 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce |
245 | newXSproto("PerlIO::get_layers", |
246 | XS_PerlIO_get_layers, file, "*;@"); |
39cff0d9 |
247 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb |
248 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 |
249 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 |
250 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 |
251 | } |
252 | |
55497cff |
253 | |
6d4a7be2 |
254 | XS(XS_UNIVERSAL_isa) |
255 | { |
256 | dXSARGS; |
55497cff |
257 | SV *sv; |
6867be6d |
258 | const char *name; |
6d4a7be2 |
259 | |
260 | if (items != 2) |
cea2e8a9 |
261 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 |
262 | |
263 | sv = ST(0); |
f8f70380 |
264 | |
d3f7f2b2 |
265 | if (SvGMAGICAL(sv)) |
266 | mg_get(sv); |
267 | |
253ecd6d |
268 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
269 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
270 | XSRETURN_UNDEF; |
271 | |
0510663f |
272 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 |
273 | |
54310121 |
274 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 |
275 | XSRETURN(1); |
276 | } |
277 | |
6d4a7be2 |
278 | XS(XS_UNIVERSAL_can) |
279 | { |
280 | dXSARGS; |
281 | SV *sv; |
6867be6d |
282 | const char *name; |
6d4a7be2 |
283 | SV *rv; |
6f08146e |
284 | HV *pkg = NULL; |
6d4a7be2 |
285 | |
286 | if (items != 2) |
cea2e8a9 |
287 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
288 | |
289 | sv = ST(0); |
f8f70380 |
290 | |
d3f7f2b2 |
291 | if (SvGMAGICAL(sv)) |
292 | mg_get(sv); |
293 | |
253ecd6d |
294 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
295 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
296 | XSRETURN_UNDEF; |
297 | |
0510663f |
298 | name = SvPV_nolen_const(ST(1)); |
3280af22 |
299 | rv = &PL_sv_undef; |
6d4a7be2 |
300 | |
46e4b22b |
301 | if (SvROK(sv)) { |
6f08146e |
302 | sv = (SV*)SvRV(sv); |
46e4b22b |
303 | if (SvOBJECT(sv)) |
6f08146e |
304 | pkg = SvSTASH(sv); |
305 | } |
306 | else { |
307 | pkg = gv_stashsv(sv, FALSE); |
308 | } |
309 | |
310 | if (pkg) { |
dc848c6f |
311 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
312 | if (gv && isGV(gv)) |
313 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); |
6d4a7be2 |
314 | } |
315 | |
316 | ST(0) = rv; |
317 | XSRETURN(1); |
318 | } |
319 | |
6d4a7be2 |
320 | XS(XS_UNIVERSAL_VERSION) |
321 | { |
322 | dXSARGS; |
323 | HV *pkg; |
324 | GV **gvp; |
325 | GV *gv; |
326 | SV *sv; |
e1ec3a88 |
327 | const char *undef; |
6d4a7be2 |
328 | |
1571675a |
329 | if (SvROK(ST(0))) { |
6d4a7be2 |
330 | sv = (SV*)SvRV(ST(0)); |
1571675a |
331 | if (!SvOBJECT(sv)) |
cea2e8a9 |
332 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 |
333 | pkg = SvSTASH(sv); |
334 | } |
335 | else { |
336 | pkg = gv_stashsv(ST(0), FALSE); |
337 | } |
338 | |
339 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); |
340 | |
d4bea2fb |
341 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 |
342 | SV *nsv = sv_newmortal(); |
343 | sv_setsv(nsv, sv); |
344 | sv = nsv; |
137d6fc0 |
345 | if ( !sv_derived_from(sv, "version")) |
346 | upg_version(sv); |
6d4a7be2 |
347 | undef = Nullch; |
348 | } |
349 | else { |
3280af22 |
350 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 |
351 | undef = "(undef)"; |
352 | } |
353 | |
1571675a |
354 | if (items > 1) { |
1571675a |
355 | SV *req = ST(1); |
356 | |
62658f4d |
357 | if (undef) { |
bfcb3514 |
358 | if (pkg) { |
359 | const char *name = HvNAME_get(pkg); |
a3b680e6 |
360 | Perl_croak(aTHX_ |
bfcb3514 |
361 | "%s does not define $%s::VERSION--version check failed", |
362 | name, name); |
363 | } else { |
a3b680e6 |
364 | Perl_croak(aTHX_ |
365 | "%s defines neither package nor VERSION--version check failed", |
0510663f |
366 | SvPVx_nolen_const(ST(0)) ); |
62658f4d |
367 | } |
368 | } |
ad63d80f |
369 | |
137d6fc0 |
370 | if ( !sv_derived_from(req, "version")) { |
371 | /* req may very well be R/O, so create a new object */ |
372 | SV *nsv = sv_newmortal(); |
373 | sv_setsv(nsv, req); |
374 | req = nsv; |
375 | upg_version(req); |
376 | } |
1571675a |
377 | |
137d6fc0 |
378 | if ( vcmp( req, sv ) > 0 ) |
b9381830 |
379 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
bfcb3514 |
380 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
b9381830 |
381 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d |
382 | } |
6d4a7be2 |
383 | |
2b140d5b |
384 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 |
385 | ST(0) = vnumify(sv); |
13f8f398 |
386 | } else { |
387 | ST(0) = sv; |
b38a9dc5 |
388 | } |
6d4a7be2 |
389 | |
390 | XSRETURN(1); |
391 | } |
392 | |
439cb1c4 |
393 | XS(XS_version_new) |
394 | { |
395 | dXSARGS; |
129318bd |
396 | if (items > 3) |
439cb1c4 |
397 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
398 | SP -= items; |
399 | { |
137d6fc0 |
400 | SV *vs = ST(1); |
401 | SV *rv; |
9137345a |
402 | const char *classname; |
403 | |
404 | /* get the class if called as an object method */ |
405 | if ( sv_isobject(ST(0)) ) { |
406 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
407 | } |
408 | else { |
409 | classname = (char *)SvPV_nolen(ST(0)); |
410 | } |
411 | |
412 | if ( items == 1 ) { |
413 | /* no parameter provided */ |
414 | if ( sv_isobject(ST(0)) ) { |
415 | /* copy existing object */ |
416 | vs = ST(0); |
417 | } |
418 | else { |
419 | /* create empty object */ |
420 | vs = sv_newmortal(); |
421 | sv_setpv(vs,""); |
422 | } |
423 | } |
424 | else if ( items == 3 ) { |
425 | vs = sv_newmortal(); |
cfd0369c |
426 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd |
427 | } |
439cb1c4 |
428 | |
137d6fc0 |
429 | rv = new_version(vs); |
0723351e |
430 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
431 | sv_bless(rv, gv_stashpv(classname,TRUE)); |
137d6fc0 |
432 | |
433 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
434 | PUTBACK; |
435 | return; |
436 | } |
437 | } |
438 | |
439 | XS(XS_version_stringify) |
440 | { |
41be1fbd |
441 | dXSARGS; |
442 | if (items < 1) |
443 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
444 | SP -= items; |
445 | { |
abb2c242 |
446 | SV * lobj = Nullsv; |
41be1fbd |
447 | |
448 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
449 | lobj = SvRV(ST(0)); |
41be1fbd |
450 | } |
451 | else |
452 | Perl_croak(aTHX_ "lobj is not of type version"); |
453 | |
137d6fc0 |
454 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
455 | |
456 | PUTBACK; |
457 | return; |
458 | } |
439cb1c4 |
459 | } |
460 | |
461 | XS(XS_version_numify) |
462 | { |
41be1fbd |
463 | dXSARGS; |
464 | if (items < 1) |
465 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
466 | SP -= items; |
467 | { |
abb2c242 |
468 | SV * lobj = Nullsv; |
41be1fbd |
469 | |
470 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
471 | lobj = SvRV(ST(0)); |
41be1fbd |
472 | } |
473 | else |
474 | Perl_croak(aTHX_ "lobj is not of type version"); |
475 | |
137d6fc0 |
476 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
477 | |
478 | PUTBACK; |
479 | return; |
480 | } |
439cb1c4 |
481 | } |
482 | |
9137345a |
483 | XS(XS_version_normal) |
484 | { |
485 | dXSARGS; |
486 | if (items < 1) |
487 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); |
488 | SP -= items; |
489 | { |
490 | SV * lobj = Nullsv; |
491 | |
492 | if (sv_derived_from(ST(0), "version")) { |
493 | lobj = SvRV(ST(0)); |
494 | } |
495 | else |
496 | Perl_croak(aTHX_ "lobj is not of type version"); |
497 | |
498 | PUSHs(sv_2mortal(vnormal(lobj))); |
499 | |
500 | PUTBACK; |
501 | return; |
502 | } |
503 | } |
504 | |
439cb1c4 |
505 | XS(XS_version_vcmp) |
506 | { |
41be1fbd |
507 | dXSARGS; |
508 | if (items < 1) |
509 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
510 | SP -= items; |
511 | { |
abb2c242 |
512 | SV * lobj = Nullsv; |
41be1fbd |
513 | |
514 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
515 | lobj = SvRV(ST(0)); |
41be1fbd |
516 | } |
517 | else |
518 | Perl_croak(aTHX_ "lobj is not of type version"); |
519 | |
520 | { |
521 | SV *rs; |
522 | SV *rvs; |
523 | SV * robj = ST(1); |
524 | IV swap = (IV)SvIV(ST(2)); |
525 | |
526 | if ( ! sv_derived_from(robj, "version") ) |
527 | { |
528 | robj = new_version(robj); |
529 | } |
530 | rvs = SvRV(robj); |
531 | |
532 | if ( swap ) |
533 | { |
534 | rs = newSViv(vcmp(rvs,lobj)); |
535 | } |
536 | else |
537 | { |
538 | rs = newSViv(vcmp(lobj,rvs)); |
539 | } |
540 | |
137d6fc0 |
541 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
542 | } |
543 | |
544 | PUTBACK; |
545 | return; |
546 | } |
439cb1c4 |
547 | } |
548 | |
549 | XS(XS_version_boolean) |
550 | { |
41be1fbd |
551 | dXSARGS; |
552 | if (items < 1) |
553 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
554 | SP -= items; |
555 | { |
abb2c242 |
556 | SV * lobj = Nullsv; |
41be1fbd |
557 | |
558 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
559 | lobj = SvRV(ST(0)); |
41be1fbd |
560 | } |
561 | else |
562 | Perl_croak(aTHX_ "lobj is not of type version"); |
563 | |
564 | { |
565 | SV *rs; |
566 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
137d6fc0 |
567 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
568 | } |
569 | |
570 | PUTBACK; |
571 | return; |
572 | } |
439cb1c4 |
573 | } |
574 | |
575 | XS(XS_version_noop) |
576 | { |
2dfd8427 |
577 | dXSARGS; |
578 | if (items < 1) |
579 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
580 | if (sv_derived_from(ST(0), "version")) |
581 | Perl_croak(aTHX_ "operation not supported with version object"); |
582 | else |
583 | Perl_croak(aTHX_ "lobj is not of type version"); |
584 | #ifndef HASATTRIBUTE_NORETURN |
585 | XSRETURN_EMPTY; |
586 | #endif |
439cb1c4 |
587 | } |
588 | |
c8d69e4a |
589 | XS(XS_version_is_alpha) |
590 | { |
591 | dXSARGS; |
592 | if (items != 1) |
593 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
594 | SP -= items; |
595 | { |
abb2c242 |
596 | SV * lobj = Nullsv; |
c8d69e4a |
597 | |
9137345a |
598 | if (sv_derived_from(ST(0), "version")) |
599 | lobj = ST(0); |
c8d69e4a |
600 | else |
601 | Perl_croak(aTHX_ "lobj is not of type version"); |
602 | { |
9137345a |
603 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) |
c8d69e4a |
604 | XSRETURN_YES; |
605 | else |
606 | XSRETURN_NO; |
607 | } |
608 | PUTBACK; |
609 | return; |
610 | } |
611 | } |
612 | |
137d6fc0 |
613 | XS(XS_version_qv) |
614 | { |
615 | dXSARGS; |
616 | if (items != 1) |
617 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
618 | SP -= items; |
619 | { |
620 | SV * ver = ST(0); |
621 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ |
622 | { |
623 | SV *vs = sv_newmortal(); |
624 | char *version; |
625 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
626 | { |
627 | char tbuf[64]; |
628 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
629 | version = savepv(tbuf); |
630 | } |
631 | else |
632 | { |
2e0de35c |
633 | version = savesvpv(ver); |
137d6fc0 |
634 | } |
635 | (void)scan_version(version,vs,TRUE); |
636 | Safefree(version); |
637 | |
638 | PUSHs(vs); |
639 | } |
640 | else |
641 | { |
642 | PUSHs(sv_2mortal(new_version(ver))); |
643 | } |
644 | |
645 | PUTBACK; |
646 | return; |
647 | } |
648 | } |
649 | |
8800c35a |
650 | XS(XS_utf8_is_utf8) |
651 | { |
41be1fbd |
652 | dXSARGS; |
653 | if (items != 1) |
654 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
655 | { |
6867be6d |
656 | const SV *sv = ST(0); |
41be1fbd |
657 | { |
658 | if (SvUTF8(sv)) |
659 | XSRETURN_YES; |
660 | else |
661 | XSRETURN_NO; |
662 | } |
663 | } |
664 | XSRETURN_EMPTY; |
8800c35a |
665 | } |
666 | |
1b026014 |
667 | XS(XS_utf8_valid) |
668 | { |
41be1fbd |
669 | dXSARGS; |
670 | if (items != 1) |
671 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
672 | { |
673 | SV * sv = ST(0); |
674 | { |
675 | STRLEN len; |
e62f0680 |
676 | const char *s = SvPV_const(sv,len); |
6867be6d |
677 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
41be1fbd |
678 | XSRETURN_YES; |
679 | else |
680 | XSRETURN_NO; |
681 | } |
682 | } |
683 | XSRETURN_EMPTY; |
1b026014 |
684 | } |
685 | |
686 | XS(XS_utf8_encode) |
687 | { |
688 | dXSARGS; |
689 | if (items != 1) |
690 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
691 | { |
692 | SV * sv = ST(0); |
693 | |
694 | sv_utf8_encode(sv); |
695 | } |
696 | XSRETURN_EMPTY; |
697 | } |
698 | |
699 | XS(XS_utf8_decode) |
700 | { |
701 | dXSARGS; |
702 | if (items != 1) |
703 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
704 | { |
705 | SV * sv = ST(0); |
6867be6d |
706 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
707 | ST(0) = boolSV(RETVAL); |
708 | sv_2mortal(ST(0)); |
709 | } |
710 | XSRETURN(1); |
711 | } |
712 | |
713 | XS(XS_utf8_upgrade) |
714 | { |
715 | dXSARGS; |
716 | if (items != 1) |
717 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
718 | { |
719 | SV * sv = ST(0); |
720 | STRLEN RETVAL; |
721 | dXSTARG; |
722 | |
723 | RETVAL = sv_utf8_upgrade(sv); |
724 | XSprePUSH; PUSHi((IV)RETVAL); |
725 | } |
726 | XSRETURN(1); |
727 | } |
728 | |
729 | XS(XS_utf8_downgrade) |
730 | { |
731 | dXSARGS; |
732 | if (items < 1 || items > 2) |
733 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
734 | { |
735 | SV * sv = ST(0); |
6867be6d |
736 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
737 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
738 | |
1b026014 |
739 | ST(0) = boolSV(RETVAL); |
740 | sv_2mortal(ST(0)); |
741 | } |
742 | XSRETURN(1); |
743 | } |
744 | |
745 | XS(XS_utf8_native_to_unicode) |
746 | { |
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 | { |
759 | dXSARGS; |
6867be6d |
760 | const UV uv = SvUV(ST(0)); |
b7953727 |
761 | |
762 | if (items > 1) |
763 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
764 | |
1b026014 |
765 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
766 | XSRETURN(1); |
767 | } |
768 | |
14a976d6 |
769 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
770 | { |
771 | dXSARGS; |
772 | SV *sv = SvRV(ST(0)); |
6867be6d |
773 | |
29569577 |
774 | if (items == 1) { |
775 | if (SvREADONLY(sv)) |
776 | XSRETURN_YES; |
777 | else |
778 | XSRETURN_NO; |
779 | } |
780 | else if (items == 2) { |
781 | if (SvTRUE(ST(1))) { |
782 | SvREADONLY_on(sv); |
783 | XSRETURN_YES; |
784 | } |
785 | else { |
14a976d6 |
786 | /* I hope you really know what you are doing. */ |
29569577 |
787 | SvREADONLY_off(sv); |
788 | XSRETURN_NO; |
789 | } |
790 | } |
14a976d6 |
791 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
792 | } |
793 | |
14a976d6 |
794 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
795 | { |
796 | dXSARGS; |
797 | SV *sv = SvRV(ST(0)); |
6867be6d |
798 | |
29569577 |
799 | if (items == 1) |
14a976d6 |
800 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
801 | else if (items == 2) { |
14a976d6 |
802 | /* I hope you really know what you are doing. */ |
29569577 |
803 | SvREFCNT(sv) = SvIV(ST(1)); |
804 | XSRETURN_IV(SvREFCNT(sv)); |
805 | } |
14a976d6 |
806 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
807 | } |
808 | |
f044d0d1 |
809 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
810 | { |
811 | dXSARGS; |
812 | HV *hv = (HV *) SvRV(ST(0)); |
6867be6d |
813 | |
3540d4ce |
814 | if (items != 1) |
815 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
816 | hv_clear_placeholders(hv); |
dfd4ef2f |
817 | XSRETURN(0); |
818 | } |
39f7a870 |
819 | |
39cff0d9 |
820 | XS(XS_Regexp_DESTROY) |
821 | { |
39cff0d9 |
822 | } |
823 | |
39f7a870 |
824 | XS(XS_PerlIO_get_layers) |
825 | { |
826 | dXSARGS; |
827 | if (items < 1 || items % 2 == 0) |
828 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
829 | #ifdef USE_PERLIO |
39f7a870 |
830 | { |
831 | SV * sv; |
832 | GV * gv; |
833 | IO * io; |
834 | bool input = TRUE; |
835 | bool details = FALSE; |
836 | |
837 | if (items > 1) { |
39f7a870 |
838 | SV **svp; |
839 | |
840 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
841 | SV **varp = svp; |
842 | SV **valp = svp + 1; |
843 | STRLEN klen; |
e62f0680 |
844 | const char *key = SvPV_const(*varp, klen); |
39f7a870 |
845 | |
846 | switch (*key) { |
847 | case 'i': |
848 | if (klen == 5 && memEQ(key, "input", 5)) { |
849 | input = SvTRUE(*valp); |
850 | break; |
851 | } |
852 | goto fail; |
853 | case 'o': |
854 | if (klen == 6 && memEQ(key, "output", 6)) { |
855 | input = !SvTRUE(*valp); |
856 | break; |
857 | } |
858 | goto fail; |
859 | case 'd': |
860 | if (klen == 7 && memEQ(key, "details", 7)) { |
861 | details = SvTRUE(*valp); |
862 | break; |
863 | } |
864 | goto fail; |
865 | default: |
866 | fail: |
867 | Perl_croak(aTHX_ |
868 | "get_layers: unknown argument '%s'", |
869 | key); |
870 | } |
871 | } |
872 | |
873 | SP -= (items - 1); |
874 | } |
875 | |
876 | sv = POPs; |
877 | gv = (GV*)sv; |
878 | |
879 | if (!isGV(sv)) { |
880 | if (SvROK(sv) && isGV(SvRV(sv))) |
881 | gv = (GV*)SvRV(sv); |
882 | else |
7a5fd60d |
883 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
39f7a870 |
884 | } |
885 | |
886 | if (gv && (io = GvIO(gv))) { |
887 | dTARGET; |
888 | AV* av = PerlIO_get_layers(aTHX_ input ? |
889 | IoIFP(io) : IoOFP(io)); |
890 | I32 i; |
891 | I32 last = av_len(av); |
892 | I32 nitem = 0; |
893 | |
894 | for (i = last; i >= 0; i -= 3) { |
895 | SV **namsvp; |
896 | SV **argsvp; |
897 | SV **flgsvp; |
898 | bool namok, argok, flgok; |
899 | |
900 | namsvp = av_fetch(av, i - 2, FALSE); |
901 | argsvp = av_fetch(av, i - 1, FALSE); |
902 | flgsvp = av_fetch(av, i, FALSE); |
903 | |
904 | namok = namsvp && *namsvp && SvPOK(*namsvp); |
905 | argok = argsvp && *argsvp && SvPOK(*argsvp); |
906 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
907 | |
908 | if (details) { |
909 | XPUSHs(namok ? |
95a20fc0 |
910 | newSVpv(SvPVX_const(*namsvp), 0) : &PL_sv_undef); |
39f7a870 |
911 | XPUSHs(argok ? |
95a20fc0 |
912 | newSVpv(SvPVX_const(*argsvp), 0) : &PL_sv_undef); |
39f7a870 |
913 | if (flgok) |
914 | XPUSHi(SvIVX(*flgsvp)); |
915 | else |
916 | XPUSHs(&PL_sv_undef); |
917 | nitem += 3; |
918 | } |
919 | else { |
920 | if (namok && argok) |
921 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
922 | *namsvp, *argsvp)); |
923 | else if (namok) |
924 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
925 | else |
926 | XPUSHs(&PL_sv_undef); |
927 | nitem++; |
928 | if (flgok) { |
929 | IV flags = SvIVX(*flgsvp); |
930 | |
931 | if (flags & PERLIO_F_UTF8) { |
932 | XPUSHs(newSVpvn("utf8", 4)); |
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 | { |
c85d3f85 |
951 | /* Using dXSARGS would also have dITEM and dSP, |
952 | * which define 2 unused local variables. */ |
557b887a |
953 | dAXMARK; |
2dfd8427 |
954 | (void)mark; |
81eaca17 |
955 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
956 | } |
957 | |
008fb0c0 |
958 | XS(XS_Internals_rehash_seed) |
8e90d776 |
959 | { |
960 | /* Using dXSARGS would also have dITEM and dSP, |
961 | * which define 2 unused local variables. */ |
557b887a |
962 | dAXMARK; |
2dfd8427 |
963 | (void)mark; |
008fb0c0 |
964 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
965 | } |
966 | |
05619474 |
967 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
968 | { |
969 | dXSARGS; |
970 | if (SvROK(ST(0))) { |
6867be6d |
971 | const HV *hv = (HV *) SvRV(ST(0)); |
05619474 |
972 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
973 | if (HvREHASH(hv)) |
974 | XSRETURN_YES; |
975 | else |
976 | XSRETURN_NO; |
977 | } |
978 | } |
979 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
980 | } |
241d1a3b |
981 | |
982 | /* |
983 | * Local variables: |
984 | * c-indentation-style: bsd |
985 | * c-basic-offset: 4 |
986 | * indent-tabs-mode: t |
987 | * End: |
988 | * |
37442d52 |
989 | * ex: set ts=8 sts=4 sw=4 noet: |
990 | */ |