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; |
5c284bb0 |
41 | HV* hv = NULL; |
c445ea15 |
42 | SV* subgen = NULL; |
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; |
7452cf6a |
69 | SV** const svp = (SV**)hv_fetch(hv, name, len, FALSE); |
46e4b22b |
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--) { |
c4420975 |
107 | SV* const sv = *svp++; |
108 | HV* const basestash = gv_stashsv(sv, FALSE); |
6d4a7be2 |
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 | { |
0b6f4f5c |
143 | HV *stash; |
46e4b22b |
144 | |
5b295bef |
145 | SvGETMAGIC(sv); |
55497cff |
146 | |
147 | if (SvROK(sv)) { |
0b6f4f5c |
148 | const char *type; |
55497cff |
149 | sv = SvRV(sv); |
150 | type = sv_reftype(sv,0); |
0b6f4f5c |
151 | if (type && strEQ(type,name)) |
152 | return TRUE; |
153 | stash = SvOBJECT(sv) ? SvSTASH(sv) : NULL; |
55497cff |
154 | } |
155 | else { |
156 | stash = gv_stashsv(sv, FALSE); |
157 | } |
46e4b22b |
158 | |
0b6f4f5c |
159 | if (stash) { |
160 | HV * const name_stash = gv_stashpv(name, FALSE); |
161 | return isa_lookup(stash, name, name_stash, strlen(name), 0) == &PL_sv_yes; |
162 | } |
163 | else |
164 | return FALSE; |
301daebc |
165 | |
55497cff |
166 | } |
167 | |
1b026014 |
168 | #include "XSUB.h" |
169 | |
27da23d5 |
170 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
171 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); |
172 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); |
439cb1c4 |
173 | XS(XS_version_new); |
174 | XS(XS_version_stringify); |
175 | XS(XS_version_numify); |
9137345a |
176 | XS(XS_version_normal); |
439cb1c4 |
177 | XS(XS_version_vcmp); |
178 | XS(XS_version_boolean); |
2dfd8427 |
179 | #ifdef HASATTRIBUTE_NORETURN |
180 | XS(XS_version_noop) __attribute__noreturn__; |
181 | #else |
439cb1c4 |
182 | XS(XS_version_noop); |
2dfd8427 |
183 | #endif |
c8d69e4a |
184 | XS(XS_version_is_alpha); |
137d6fc0 |
185 | XS(XS_version_qv); |
8800c35a |
186 | XS(XS_utf8_is_utf8); |
1b026014 |
187 | XS(XS_utf8_valid); |
188 | XS(XS_utf8_encode); |
189 | XS(XS_utf8_decode); |
190 | XS(XS_utf8_upgrade); |
191 | XS(XS_utf8_downgrade); |
192 | XS(XS_utf8_unicode_to_native); |
193 | XS(XS_utf8_native_to_unicode); |
29569577 |
194 | XS(XS_Internals_SvREADONLY); |
195 | XS(XS_Internals_SvREFCNT); |
f044d0d1 |
196 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 |
197 | XS(XS_PerlIO_get_layers); |
39cff0d9 |
198 | XS(XS_Regexp_DESTROY); |
9a7034eb |
199 | XS(XS_Internals_hash_seed); |
008fb0c0 |
200 | XS(XS_Internals_rehash_seed); |
05619474 |
201 | XS(XS_Internals_HvREHASH); |
e1234d8e |
202 | XS(XS_Internals_inc_sub_generation); |
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, "\\%"); |
e1234d8e |
251 | newXSproto("Internals::inc_sub_generation",XS_Internals_inc_sub_generation, |
252 | file, ""); |
0cb96387 |
253 | } |
254 | |
55497cff |
255 | |
6d4a7be2 |
256 | XS(XS_UNIVERSAL_isa) |
257 | { |
258 | dXSARGS; |
6d4a7be2 |
259 | |
260 | if (items != 2) |
cea2e8a9 |
261 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
c4420975 |
262 | else { |
263 | SV * const sv = ST(0); |
264 | const char *name; |
6d4a7be2 |
265 | |
c4420975 |
266 | SvGETMAGIC(sv); |
d3f7f2b2 |
267 | |
c4420975 |
268 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
269 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
270 | XSRETURN_UNDEF; |
f8f70380 |
271 | |
c4420975 |
272 | name = SvPV_nolen_const(ST(1)); |
6d4a7be2 |
273 | |
c4420975 |
274 | ST(0) = boolSV(sv_derived_from(sv, name)); |
275 | XSRETURN(1); |
276 | } |
6d4a7be2 |
277 | } |
278 | |
6d4a7be2 |
279 | XS(XS_UNIVERSAL_can) |
280 | { |
281 | dXSARGS; |
282 | SV *sv; |
6867be6d |
283 | const char *name; |
6d4a7be2 |
284 | SV *rv; |
6f08146e |
285 | HV *pkg = NULL; |
6d4a7be2 |
286 | |
287 | if (items != 2) |
cea2e8a9 |
288 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
289 | |
290 | sv = ST(0); |
f8f70380 |
291 | |
5b295bef |
292 | SvGETMAGIC(sv); |
d3f7f2b2 |
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) { |
c4420975 |
311 | GV * const gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
dc848c6f |
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 | |
0008872a |
341 | if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) { |
c4420975 |
342 | SV * const nsv = sv_newmortal(); |
6d4a7be2 |
343 | sv_setsv(nsv, sv); |
344 | sv = nsv; |
137d6fc0 |
345 | if ( !sv_derived_from(sv, "version")) |
346 | upg_version(sv); |
c445ea15 |
347 | undef = NULL; |
6d4a7be2 |
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) { |
c4420975 |
359 | const char * const 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 */ |
c4420975 |
372 | SV * const nsv = sv_newmortal(); |
137d6fc0 |
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; |
c4420975 |
402 | const char * const classname = |
403 | sv_isobject(ST(0)) /* get the class if called as an object method */ |
404 | ? HvNAME(SvSTASH(SvRV(ST(0)))) |
405 | : (char *)SvPV_nolen(ST(0)); |
9137345a |
406 | |
407 | if ( items == 1 ) { |
408 | /* no parameter provided */ |
409 | if ( sv_isobject(ST(0)) ) { |
410 | /* copy existing object */ |
411 | vs = ST(0); |
412 | } |
413 | else { |
414 | /* create empty object */ |
415 | vs = sv_newmortal(); |
1946a074 |
416 | sv_setpvn(vs,"",0); |
9137345a |
417 | } |
418 | } |
419 | else if ( items == 3 ) { |
420 | vs = sv_newmortal(); |
cfd0369c |
421 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2))); |
129318bd |
422 | } |
439cb1c4 |
423 | |
137d6fc0 |
424 | rv = new_version(vs); |
0723351e |
425 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
426 | sv_bless(rv, gv_stashpv(classname,TRUE)); |
137d6fc0 |
427 | |
428 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
429 | PUTBACK; |
430 | return; |
431 | } |
432 | } |
433 | |
434 | XS(XS_version_stringify) |
435 | { |
41be1fbd |
436 | dXSARGS; |
437 | if (items < 1) |
438 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
439 | SP -= items; |
440 | { |
7452cf6a |
441 | SV * lobj; |
41be1fbd |
442 | |
443 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
444 | lobj = SvRV(ST(0)); |
41be1fbd |
445 | } |
446 | else |
447 | Perl_croak(aTHX_ "lobj is not of type version"); |
448 | |
137d6fc0 |
449 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
450 | |
451 | PUTBACK; |
452 | return; |
453 | } |
439cb1c4 |
454 | } |
455 | |
456 | XS(XS_version_numify) |
457 | { |
41be1fbd |
458 | dXSARGS; |
459 | if (items < 1) |
460 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
461 | SP -= items; |
462 | { |
7452cf6a |
463 | SV * lobj; |
41be1fbd |
464 | |
465 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
466 | lobj = SvRV(ST(0)); |
41be1fbd |
467 | } |
468 | else |
469 | Perl_croak(aTHX_ "lobj is not of type version"); |
470 | |
137d6fc0 |
471 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
472 | |
473 | PUTBACK; |
474 | return; |
475 | } |
439cb1c4 |
476 | } |
477 | |
9137345a |
478 | XS(XS_version_normal) |
479 | { |
480 | dXSARGS; |
481 | if (items < 1) |
482 | Perl_croak(aTHX_ "Usage: version::normal(lobj, ...)"); |
483 | SP -= items; |
484 | { |
7452cf6a |
485 | SV * lobj; |
9137345a |
486 | |
487 | if (sv_derived_from(ST(0), "version")) { |
488 | lobj = SvRV(ST(0)); |
489 | } |
490 | else |
491 | Perl_croak(aTHX_ "lobj is not of type version"); |
492 | |
493 | PUSHs(sv_2mortal(vnormal(lobj))); |
494 | |
495 | PUTBACK; |
496 | return; |
497 | } |
498 | } |
499 | |
439cb1c4 |
500 | XS(XS_version_vcmp) |
501 | { |
41be1fbd |
502 | dXSARGS; |
503 | if (items < 1) |
504 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
505 | SP -= items; |
506 | { |
7452cf6a |
507 | SV * lobj; |
41be1fbd |
508 | |
509 | if (sv_derived_from(ST(0), "version")) { |
9137345a |
510 | lobj = SvRV(ST(0)); |
41be1fbd |
511 | } |
512 | else |
513 | Perl_croak(aTHX_ "lobj is not of type version"); |
514 | |
515 | { |
516 | SV *rs; |
517 | SV *rvs; |
518 | SV * robj = ST(1); |
7452cf6a |
519 | const IV swap = (IV)SvIV(ST(2)); |
41be1fbd |
520 | |
521 | if ( ! sv_derived_from(robj, "version") ) |
522 | { |
523 | robj = new_version(robj); |
524 | } |
525 | rvs = SvRV(robj); |
526 | |
527 | if ( swap ) |
528 | { |
529 | rs = newSViv(vcmp(rvs,lobj)); |
530 | } |
531 | else |
532 | { |
533 | rs = newSViv(vcmp(lobj,rvs)); |
534 | } |
535 | |
137d6fc0 |
536 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
537 | } |
538 | |
539 | PUTBACK; |
540 | return; |
541 | } |
439cb1c4 |
542 | } |
543 | |
544 | XS(XS_version_boolean) |
545 | { |
41be1fbd |
546 | dXSARGS; |
547 | if (items < 1) |
548 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
549 | SP -= items; |
c4420975 |
550 | if (sv_derived_from(ST(0), "version")) { |
551 | SV * const lobj = SvRV(ST(0)); |
552 | SV * const rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
553 | PUSHs(sv_2mortal(rs)); |
554 | PUTBACK; |
555 | return; |
556 | } |
557 | else |
558 | Perl_croak(aTHX_ "lobj is not of type version"); |
439cb1c4 |
559 | } |
560 | |
561 | XS(XS_version_noop) |
562 | { |
2dfd8427 |
563 | dXSARGS; |
564 | if (items < 1) |
565 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
566 | if (sv_derived_from(ST(0), "version")) |
567 | Perl_croak(aTHX_ "operation not supported with version object"); |
568 | else |
569 | Perl_croak(aTHX_ "lobj is not of type version"); |
570 | #ifndef HASATTRIBUTE_NORETURN |
571 | XSRETURN_EMPTY; |
572 | #endif |
439cb1c4 |
573 | } |
574 | |
c8d69e4a |
575 | XS(XS_version_is_alpha) |
576 | { |
577 | dXSARGS; |
578 | if (items != 1) |
579 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
580 | SP -= items; |
c4420975 |
581 | if (sv_derived_from(ST(0), "version")) { |
582 | SV * const lobj = ST(0); |
583 | if ( hv_exists((HV*)SvRV(lobj), "alpha", 5 ) ) |
584 | XSRETURN_YES; |
585 | else |
586 | XSRETURN_NO; |
c8d69e4a |
587 | PUTBACK; |
588 | return; |
589 | } |
c4420975 |
590 | else |
591 | Perl_croak(aTHX_ "lobj is not of type version"); |
c8d69e4a |
592 | } |
593 | |
137d6fc0 |
594 | XS(XS_version_qv) |
595 | { |
596 | dXSARGS; |
597 | if (items != 1) |
598 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
599 | SP -= items; |
600 | { |
601 | SV * ver = ST(0); |
c4420975 |
602 | if ( !SvVOK(ver) ) { /* only need to do with if not already v-string */ |
603 | SV * const vs = sv_newmortal(); |
137d6fc0 |
604 | char *version; |
605 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
606 | { |
607 | char tbuf[64]; |
86c11942 |
608 | const STRLEN len = my_sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
609 | version = savepvn(tbuf, len); |
137d6fc0 |
610 | } |
611 | else |
612 | { |
2e0de35c |
613 | version = savesvpv(ver); |
137d6fc0 |
614 | } |
615 | (void)scan_version(version,vs,TRUE); |
616 | Safefree(version); |
617 | |
618 | PUSHs(vs); |
619 | } |
620 | else |
621 | { |
622 | PUSHs(sv_2mortal(new_version(ver))); |
623 | } |
624 | |
625 | PUTBACK; |
626 | return; |
627 | } |
628 | } |
629 | |
8800c35a |
630 | XS(XS_utf8_is_utf8) |
631 | { |
41be1fbd |
632 | dXSARGS; |
633 | if (items != 1) |
634 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
c4420975 |
635 | else { |
636 | const SV * const sv = ST(0); |
637 | if (SvUTF8(sv)) |
638 | XSRETURN_YES; |
639 | else |
640 | XSRETURN_NO; |
41be1fbd |
641 | } |
642 | XSRETURN_EMPTY; |
8800c35a |
643 | } |
644 | |
1b026014 |
645 | XS(XS_utf8_valid) |
646 | { |
41be1fbd |
647 | dXSARGS; |
648 | if (items != 1) |
649 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
c4420975 |
650 | else { |
651 | SV * const sv = ST(0); |
652 | STRLEN len; |
653 | const char * const s = SvPV_const(sv,len); |
654 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
655 | XSRETURN_YES; |
656 | else |
657 | XSRETURN_NO; |
658 | } |
41be1fbd |
659 | XSRETURN_EMPTY; |
1b026014 |
660 | } |
661 | |
662 | XS(XS_utf8_encode) |
663 | { |
664 | dXSARGS; |
665 | if (items != 1) |
666 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
c4420975 |
667 | sv_utf8_encode(ST(0)); |
1b026014 |
668 | XSRETURN_EMPTY; |
669 | } |
670 | |
671 | XS(XS_utf8_decode) |
672 | { |
673 | dXSARGS; |
674 | if (items != 1) |
675 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
c4420975 |
676 | else { |
677 | SV * const sv = ST(0); |
6867be6d |
678 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
679 | ST(0) = boolSV(RETVAL); |
680 | sv_2mortal(ST(0)); |
681 | } |
682 | XSRETURN(1); |
683 | } |
684 | |
685 | XS(XS_utf8_upgrade) |
686 | { |
687 | dXSARGS; |
688 | if (items != 1) |
689 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
c4420975 |
690 | else { |
691 | SV * const sv = ST(0); |
1b026014 |
692 | STRLEN RETVAL; |
693 | dXSTARG; |
694 | |
695 | RETVAL = sv_utf8_upgrade(sv); |
696 | XSprePUSH; PUSHi((IV)RETVAL); |
697 | } |
698 | XSRETURN(1); |
699 | } |
700 | |
701 | XS(XS_utf8_downgrade) |
702 | { |
703 | dXSARGS; |
704 | if (items < 1 || items > 2) |
705 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
c4420975 |
706 | else { |
707 | SV * const sv = ST(0); |
6867be6d |
708 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
709 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
710 | |
1b026014 |
711 | ST(0) = boolSV(RETVAL); |
712 | sv_2mortal(ST(0)); |
713 | } |
714 | XSRETURN(1); |
715 | } |
716 | |
717 | XS(XS_utf8_native_to_unicode) |
718 | { |
719 | dXSARGS; |
6867be6d |
720 | const UV uv = SvUV(ST(0)); |
b7953727 |
721 | |
722 | if (items > 1) |
723 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
724 | |
1b026014 |
725 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
726 | XSRETURN(1); |
727 | } |
728 | |
729 | XS(XS_utf8_unicode_to_native) |
730 | { |
731 | dXSARGS; |
6867be6d |
732 | const UV uv = SvUV(ST(0)); |
b7953727 |
733 | |
734 | if (items > 1) |
735 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
736 | |
1b026014 |
737 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
738 | XSRETURN(1); |
739 | } |
740 | |
14a976d6 |
741 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
742 | { |
743 | dXSARGS; |
c4420975 |
744 | SV * const sv = SvRV(ST(0)); |
6867be6d |
745 | |
29569577 |
746 | if (items == 1) { |
747 | if (SvREADONLY(sv)) |
748 | XSRETURN_YES; |
749 | else |
750 | XSRETURN_NO; |
751 | } |
752 | else if (items == 2) { |
753 | if (SvTRUE(ST(1))) { |
754 | SvREADONLY_on(sv); |
755 | XSRETURN_YES; |
756 | } |
757 | else { |
14a976d6 |
758 | /* I hope you really know what you are doing. */ |
29569577 |
759 | SvREADONLY_off(sv); |
760 | XSRETURN_NO; |
761 | } |
762 | } |
14a976d6 |
763 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
764 | } |
765 | |
14a976d6 |
766 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
767 | { |
768 | dXSARGS; |
c4420975 |
769 | SV * const sv = SvRV(ST(0)); |
6867be6d |
770 | |
29569577 |
771 | if (items == 1) |
14a976d6 |
772 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
773 | else if (items == 2) { |
14a976d6 |
774 | /* I hope you really know what you are doing. */ |
29569577 |
775 | SvREFCNT(sv) = SvIV(ST(1)); |
776 | XSRETURN_IV(SvREFCNT(sv)); |
777 | } |
14a976d6 |
778 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
779 | } |
780 | |
f044d0d1 |
781 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
782 | { |
783 | dXSARGS; |
6867be6d |
784 | |
3540d4ce |
785 | if (items != 1) |
786 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
c4420975 |
787 | else { |
788 | HV * const hv = (HV *) SvRV(ST(0)); |
789 | hv_clear_placeholders(hv); |
790 | XSRETURN(0); |
791 | } |
dfd4ef2f |
792 | } |
39f7a870 |
793 | |
39cff0d9 |
794 | XS(XS_Regexp_DESTROY) |
795 | { |
53c1dcc0 |
796 | PERL_UNUSED_ARG(cv); |
39cff0d9 |
797 | } |
798 | |
39f7a870 |
799 | XS(XS_PerlIO_get_layers) |
800 | { |
801 | dXSARGS; |
802 | if (items < 1 || items % 2 == 0) |
803 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
804 | #ifdef USE_PERLIO |
39f7a870 |
805 | { |
806 | SV * sv; |
807 | GV * gv; |
808 | IO * io; |
809 | bool input = TRUE; |
810 | bool details = FALSE; |
811 | |
812 | if (items > 1) { |
c4420975 |
813 | SV * const *svp; |
39f7a870 |
814 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
c4420975 |
815 | SV * const * const varp = svp; |
816 | SV * const * const valp = svp + 1; |
39f7a870 |
817 | STRLEN klen; |
c4420975 |
818 | const char * const key = SvPV_const(*varp, klen); |
39f7a870 |
819 | |
820 | switch (*key) { |
821 | case 'i': |
822 | if (klen == 5 && memEQ(key, "input", 5)) { |
823 | input = SvTRUE(*valp); |
824 | break; |
825 | } |
826 | goto fail; |
827 | case 'o': |
828 | if (klen == 6 && memEQ(key, "output", 6)) { |
829 | input = !SvTRUE(*valp); |
830 | break; |
831 | } |
832 | goto fail; |
833 | case 'd': |
834 | if (klen == 7 && memEQ(key, "details", 7)) { |
835 | details = SvTRUE(*valp); |
836 | break; |
837 | } |
838 | goto fail; |
839 | default: |
840 | fail: |
841 | Perl_croak(aTHX_ |
842 | "get_layers: unknown argument '%s'", |
843 | key); |
844 | } |
845 | } |
846 | |
847 | SP -= (items - 1); |
848 | } |
849 | |
850 | sv = POPs; |
851 | gv = (GV*)sv; |
852 | |
853 | if (!isGV(sv)) { |
854 | if (SvROK(sv) && isGV(SvRV(sv))) |
855 | gv = (GV*)SvRV(sv); |
671d49be |
856 | else if (SvPOKp(sv)) |
f776e3cd |
857 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
39f7a870 |
858 | } |
859 | |
860 | if (gv && (io = GvIO(gv))) { |
861 | dTARGET; |
c4420975 |
862 | AV* const av = PerlIO_get_layers(aTHX_ input ? |
39f7a870 |
863 | IoIFP(io) : IoOFP(io)); |
864 | I32 i; |
c4420975 |
865 | const I32 last = av_len(av); |
39f7a870 |
866 | I32 nitem = 0; |
867 | |
868 | for (i = last; i >= 0; i -= 3) { |
c4420975 |
869 | SV * const * const namsvp = av_fetch(av, i - 2, FALSE); |
870 | SV * const * const argsvp = av_fetch(av, i - 1, FALSE); |
871 | SV * const * const flgsvp = av_fetch(av, i, FALSE); |
39f7a870 |
872 | |
c4420975 |
873 | const bool namok = namsvp && *namsvp && SvPOK(*namsvp); |
874 | const bool argok = argsvp && *argsvp && SvPOK(*argsvp); |
875 | const bool flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
39f7a870 |
876 | |
877 | if (details) { |
ec3bab8e |
878 | XPUSHs(namok |
879 | ? newSVpvn(SvPVX_const(*namsvp), SvCUR(*namsvp)) |
880 | : &PL_sv_undef); |
881 | XPUSHs(argok |
882 | ? newSVpvn(SvPVX_const(*argsvp), SvCUR(*argsvp)) |
883 | : &PL_sv_undef); |
39f7a870 |
884 | if (flgok) |
885 | XPUSHi(SvIVX(*flgsvp)); |
886 | else |
887 | XPUSHs(&PL_sv_undef); |
888 | nitem += 3; |
889 | } |
890 | else { |
891 | if (namok && argok) |
892 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
893 | *namsvp, *argsvp)); |
894 | else if (namok) |
895 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
896 | else |
897 | XPUSHs(&PL_sv_undef); |
898 | nitem++; |
899 | if (flgok) { |
c4420975 |
900 | const IV flags = SvIVX(*flgsvp); |
39f7a870 |
901 | |
902 | if (flags & PERLIO_F_UTF8) { |
903 | XPUSHs(newSVpvn("utf8", 4)); |
904 | nitem++; |
905 | } |
906 | } |
907 | } |
908 | } |
909 | |
910 | SvREFCNT_dec(av); |
911 | |
912 | XSRETURN(nitem); |
913 | } |
914 | } |
5fef3b4a |
915 | #endif |
39f7a870 |
916 | |
917 | XSRETURN(0); |
918 | } |
919 | |
9a7034eb |
920 | XS(XS_Internals_hash_seed) |
c910b28a |
921 | { |
c85d3f85 |
922 | /* Using dXSARGS would also have dITEM and dSP, |
923 | * which define 2 unused local variables. */ |
557b887a |
924 | dAXMARK; |
53c1dcc0 |
925 | PERL_UNUSED_ARG(cv); |
ad73156c |
926 | PERL_UNUSED_VAR(mark); |
81eaca17 |
927 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
928 | } |
929 | |
008fb0c0 |
930 | XS(XS_Internals_rehash_seed) |
8e90d776 |
931 | { |
932 | /* Using dXSARGS would also have dITEM and dSP, |
933 | * which define 2 unused local variables. */ |
557b887a |
934 | dAXMARK; |
53c1dcc0 |
935 | PERL_UNUSED_ARG(cv); |
ad73156c |
936 | PERL_UNUSED_VAR(mark); |
008fb0c0 |
937 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
938 | } |
939 | |
05619474 |
940 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
941 | { |
942 | dXSARGS; |
943 | if (SvROK(ST(0))) { |
c4420975 |
944 | const HV * const hv = (HV *) SvRV(ST(0)); |
05619474 |
945 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
946 | if (HvREHASH(hv)) |
947 | XSRETURN_YES; |
948 | else |
949 | XSRETURN_NO; |
950 | } |
951 | } |
952 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
953 | } |
241d1a3b |
954 | |
e1234d8e |
955 | XS(XS_Internals_inc_sub_generation) |
956 | { |
957 | /* Using dXSARGS would also have dITEM and dSP, |
958 | * which define 2 unused local variables. */ |
959 | dAXMARK; |
960 | PERL_UNUSED_ARG(cv); |
961 | PERL_UNUSED_VAR(mark); |
962 | ++PL_sub_generation; |
963 | XSRETURN_EMPTY; |
964 | } |
965 | |
241d1a3b |
966 | /* |
967 | * Local variables: |
968 | * c-indentation-style: bsd |
969 | * c-basic-offset: 4 |
970 | * indent-tabs-mode: t |
971 | * End: |
972 | * |
37442d52 |
973 | * ex: set ts=8 sts=4 sw=4 noet: |
974 | */ |