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); |
177 | XS(XS_version_vcmp); |
178 | XS(XS_version_boolean); |
179 | XS(XS_version_noop); |
c8d69e4a |
180 | XS(XS_version_is_alpha); |
137d6fc0 |
181 | XS(XS_version_qv); |
8800c35a |
182 | XS(XS_utf8_is_utf8); |
1b026014 |
183 | XS(XS_utf8_valid); |
184 | XS(XS_utf8_encode); |
185 | XS(XS_utf8_decode); |
186 | XS(XS_utf8_upgrade); |
187 | XS(XS_utf8_downgrade); |
188 | XS(XS_utf8_unicode_to_native); |
189 | XS(XS_utf8_native_to_unicode); |
29569577 |
190 | XS(XS_Internals_SvREADONLY); |
191 | XS(XS_Internals_SvREFCNT); |
f044d0d1 |
192 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 |
193 | XS(XS_PerlIO_get_layers); |
39cff0d9 |
194 | XS(XS_Regexp_DESTROY); |
9a7034eb |
195 | XS(XS_Internals_hash_seed); |
008fb0c0 |
196 | XS(XS_Internals_rehash_seed); |
05619474 |
197 | XS(XS_Internals_HvREHASH); |
0cb96387 |
198 | |
199 | void |
200 | Perl_boot_core_UNIVERSAL(pTHX) |
201 | { |
e1ec3a88 |
202 | const char file[] = __FILE__; |
0cb96387 |
203 | |
204 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
205 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
206 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
439cb1c4 |
207 | { |
ad63d80f |
208 | /* register the overloading (type 'A') magic */ |
209 | PL_amagic_generation++; |
439cb1c4 |
210 | /* Make it findable via fetchmethod */ |
be2ebcad |
211 | newXS("version::()", XS_version_noop, file); |
439cb1c4 |
212 | newXS("version::new", XS_version_new, file); |
213 | newXS("version::(\"\"", XS_version_stringify, file); |
214 | newXS("version::stringify", XS_version_stringify, file); |
215 | newXS("version::(0+", XS_version_numify, file); |
216 | newXS("version::numify", XS_version_numify, file); |
217 | newXS("version::(cmp", XS_version_vcmp, file); |
218 | newXS("version::(<=>", XS_version_vcmp, file); |
219 | newXS("version::vcmp", XS_version_vcmp, file); |
220 | newXS("version::(bool", XS_version_boolean, file); |
221 | newXS("version::boolean", XS_version_boolean, file); |
222 | newXS("version::(nomethod", XS_version_noop, file); |
223 | newXS("version::noop", XS_version_noop, file); |
c8d69e4a |
224 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 |
225 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 |
226 | } |
8800c35a |
227 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 |
228 | newXS("utf8::valid", XS_utf8_valid, file); |
229 | newXS("utf8::encode", XS_utf8_encode, file); |
230 | newXS("utf8::decode", XS_utf8_decode, file); |
231 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
232 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
233 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
234 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
29569577 |
235 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
236 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
dfd4ef2f |
237 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 |
238 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce |
239 | newXSproto("PerlIO::get_layers", |
240 | XS_PerlIO_get_layers, file, "*;@"); |
39cff0d9 |
241 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb |
242 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 |
243 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 |
244 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 |
245 | } |
246 | |
55497cff |
247 | |
6d4a7be2 |
248 | XS(XS_UNIVERSAL_isa) |
249 | { |
250 | dXSARGS; |
55497cff |
251 | SV *sv; |
6867be6d |
252 | const char *name; |
2d8e6c8d |
253 | STRLEN n_a; |
6d4a7be2 |
254 | |
255 | if (items != 2) |
cea2e8a9 |
256 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 |
257 | |
258 | sv = ST(0); |
f8f70380 |
259 | |
d3f7f2b2 |
260 | if (SvGMAGICAL(sv)) |
261 | mg_get(sv); |
262 | |
253ecd6d |
263 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
264 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
265 | XSRETURN_UNDEF; |
266 | |
6867be6d |
267 | name = (const char *)SvPV(ST(1),n_a); |
6d4a7be2 |
268 | |
54310121 |
269 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 |
270 | XSRETURN(1); |
271 | } |
272 | |
6d4a7be2 |
273 | XS(XS_UNIVERSAL_can) |
274 | { |
275 | dXSARGS; |
276 | SV *sv; |
6867be6d |
277 | const char *name; |
6d4a7be2 |
278 | SV *rv; |
6f08146e |
279 | HV *pkg = NULL; |
2d8e6c8d |
280 | STRLEN n_a; |
6d4a7be2 |
281 | |
282 | if (items != 2) |
cea2e8a9 |
283 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
284 | |
285 | sv = ST(0); |
f8f70380 |
286 | |
d3f7f2b2 |
287 | if (SvGMAGICAL(sv)) |
288 | mg_get(sv); |
289 | |
253ecd6d |
290 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
291 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
292 | XSRETURN_UNDEF; |
293 | |
6867be6d |
294 | name = (const char *)SvPV(ST(1),n_a); |
3280af22 |
295 | rv = &PL_sv_undef; |
6d4a7be2 |
296 | |
46e4b22b |
297 | if (SvROK(sv)) { |
6f08146e |
298 | sv = (SV*)SvRV(sv); |
46e4b22b |
299 | if (SvOBJECT(sv)) |
6f08146e |
300 | pkg = SvSTASH(sv); |
301 | } |
302 | else { |
303 | pkg = gv_stashsv(sv, FALSE); |
304 | } |
305 | |
306 | if (pkg) { |
dc848c6f |
307 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
308 | if (gv && isGV(gv)) |
309 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); |
6d4a7be2 |
310 | } |
311 | |
312 | ST(0) = rv; |
313 | XSRETURN(1); |
314 | } |
315 | |
6d4a7be2 |
316 | XS(XS_UNIVERSAL_VERSION) |
317 | { |
318 | dXSARGS; |
319 | HV *pkg; |
320 | GV **gvp; |
321 | GV *gv; |
322 | SV *sv; |
e1ec3a88 |
323 | const char *undef; |
6d4a7be2 |
324 | |
1571675a |
325 | if (SvROK(ST(0))) { |
6d4a7be2 |
326 | sv = (SV*)SvRV(ST(0)); |
1571675a |
327 | if (!SvOBJECT(sv)) |
cea2e8a9 |
328 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 |
329 | pkg = SvSTASH(sv); |
330 | } |
331 | else { |
332 | pkg = gv_stashsv(ST(0), FALSE); |
333 | } |
334 | |
335 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); |
336 | |
d4bea2fb |
337 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 |
338 | SV *nsv = sv_newmortal(); |
339 | sv_setsv(nsv, sv); |
340 | sv = nsv; |
137d6fc0 |
341 | if ( !sv_derived_from(sv, "version")) |
342 | upg_version(sv); |
6d4a7be2 |
343 | undef = Nullch; |
344 | } |
345 | else { |
3280af22 |
346 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 |
347 | undef = "(undef)"; |
348 | } |
349 | |
1571675a |
350 | if (items > 1) { |
1571675a |
351 | SV *req = ST(1); |
352 | |
62658f4d |
353 | if (undef) { |
bfcb3514 |
354 | if (pkg) { |
355 | const char *name = HvNAME_get(pkg); |
a3b680e6 |
356 | Perl_croak(aTHX_ |
bfcb3514 |
357 | "%s does not define $%s::VERSION--version check failed", |
358 | name, name); |
359 | } else { |
a3b680e6 |
360 | STRLEN n_a; |
361 | Perl_croak(aTHX_ |
362 | "%s defines neither package nor VERSION--version check failed", |
363 | SvPVx(ST(0),n_a) ); |
62658f4d |
364 | } |
365 | } |
ad63d80f |
366 | |
137d6fc0 |
367 | if ( !sv_derived_from(req, "version")) { |
368 | /* req may very well be R/O, so create a new object */ |
369 | SV *nsv = sv_newmortal(); |
370 | sv_setsv(nsv, req); |
371 | req = nsv; |
372 | upg_version(req); |
373 | } |
1571675a |
374 | |
137d6fc0 |
375 | if ( vcmp( req, sv ) > 0 ) |
b9381830 |
376 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
bfcb3514 |
377 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
b9381830 |
378 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d |
379 | } |
6d4a7be2 |
380 | |
2b140d5b |
381 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 |
382 | ST(0) = vnumify(sv); |
13f8f398 |
383 | } else { |
384 | ST(0) = sv; |
b38a9dc5 |
385 | } |
6d4a7be2 |
386 | |
387 | XSRETURN(1); |
388 | } |
389 | |
439cb1c4 |
390 | XS(XS_version_new) |
391 | { |
392 | dXSARGS; |
129318bd |
393 | if (items > 3) |
439cb1c4 |
394 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
395 | SP -= items; |
396 | { |
0723351e |
397 | const char *classname = SvPV_nolen(ST(0)); |
137d6fc0 |
398 | SV *vs = ST(1); |
399 | SV *rv; |
129318bd |
400 | if (items == 3 ) |
401 | { |
137d6fc0 |
402 | vs = sv_newmortal(); |
403 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen(ST(2))); |
129318bd |
404 | } |
439cb1c4 |
405 | |
137d6fc0 |
406 | rv = new_version(vs); |
0723351e |
407 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
408 | sv_bless(rv, gv_stashpv(classname,TRUE)); |
137d6fc0 |
409 | |
410 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
411 | PUTBACK; |
412 | return; |
413 | } |
414 | } |
415 | |
416 | XS(XS_version_stringify) |
417 | { |
41be1fbd |
418 | dXSARGS; |
419 | if (items < 1) |
420 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
421 | SP -= items; |
422 | { |
abb2c242 |
423 | SV * lobj = Nullsv; |
41be1fbd |
424 | |
425 | if (sv_derived_from(ST(0), "version")) { |
426 | SV *tmp = SvRV(ST(0)); |
427 | lobj = tmp; |
428 | } |
429 | else |
430 | Perl_croak(aTHX_ "lobj is not of type version"); |
431 | |
137d6fc0 |
432 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
433 | |
434 | PUTBACK; |
435 | return; |
436 | } |
439cb1c4 |
437 | } |
438 | |
439 | XS(XS_version_numify) |
440 | { |
41be1fbd |
441 | dXSARGS; |
442 | if (items < 1) |
443 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
444 | SP -= items; |
445 | { |
abb2c242 |
446 | SV * lobj = Nullsv; |
41be1fbd |
447 | |
448 | if (sv_derived_from(ST(0), "version")) { |
449 | SV *tmp = SvRV(ST(0)); |
450 | lobj = tmp; |
451 | } |
452 | else |
453 | Perl_croak(aTHX_ "lobj is not of type version"); |
454 | |
137d6fc0 |
455 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
456 | |
457 | PUTBACK; |
458 | return; |
459 | } |
439cb1c4 |
460 | } |
461 | |
462 | XS(XS_version_vcmp) |
463 | { |
41be1fbd |
464 | dXSARGS; |
465 | if (items < 1) |
466 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
467 | SP -= items; |
468 | { |
abb2c242 |
469 | SV * lobj = Nullsv; |
41be1fbd |
470 | |
471 | if (sv_derived_from(ST(0), "version")) { |
472 | SV *tmp = SvRV(ST(0)); |
473 | lobj = tmp; |
474 | } |
475 | else |
476 | Perl_croak(aTHX_ "lobj is not of type version"); |
477 | |
478 | { |
479 | SV *rs; |
480 | SV *rvs; |
481 | SV * robj = ST(1); |
482 | IV swap = (IV)SvIV(ST(2)); |
483 | |
484 | if ( ! sv_derived_from(robj, "version") ) |
485 | { |
486 | robj = new_version(robj); |
487 | } |
488 | rvs = SvRV(robj); |
489 | |
490 | if ( swap ) |
491 | { |
492 | rs = newSViv(vcmp(rvs,lobj)); |
493 | } |
494 | else |
495 | { |
496 | rs = newSViv(vcmp(lobj,rvs)); |
497 | } |
498 | |
137d6fc0 |
499 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
500 | } |
501 | |
502 | PUTBACK; |
503 | return; |
504 | } |
439cb1c4 |
505 | } |
506 | |
507 | XS(XS_version_boolean) |
508 | { |
41be1fbd |
509 | dXSARGS; |
510 | if (items < 1) |
511 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
512 | SP -= items; |
513 | { |
abb2c242 |
514 | SV * lobj = Nullsv; |
41be1fbd |
515 | |
516 | if (sv_derived_from(ST(0), "version")) { |
6867be6d |
517 | /* XXX If tmp serves a purpose, explain it. */ |
41be1fbd |
518 | SV *tmp = SvRV(ST(0)); |
519 | lobj = tmp; |
520 | } |
521 | else |
522 | Perl_croak(aTHX_ "lobj is not of type version"); |
523 | |
524 | { |
525 | SV *rs; |
526 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
137d6fc0 |
527 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
528 | } |
529 | |
530 | PUTBACK; |
531 | return; |
532 | } |
439cb1c4 |
533 | } |
534 | |
535 | XS(XS_version_noop) |
536 | { |
41be1fbd |
537 | dXSARGS; |
538 | if (items < 1) |
539 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
540 | { |
abb2c242 |
541 | SV * lobj = Nullsv; |
41be1fbd |
542 | |
543 | if (sv_derived_from(ST(0), "version")) { |
544 | SV *tmp = SvRV(ST(0)); |
545 | lobj = tmp; |
546 | } |
547 | else |
548 | Perl_croak(aTHX_ "lobj is not of type version"); |
549 | |
550 | { |
551 | Perl_croak(aTHX_ "operation not supported with version object"); |
552 | } |
553 | |
554 | } |
555 | XSRETURN_EMPTY; |
439cb1c4 |
556 | } |
557 | |
c8d69e4a |
558 | XS(XS_version_is_alpha) |
559 | { |
560 | dXSARGS; |
561 | if (items != 1) |
562 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
563 | SP -= items; |
564 | { |
abb2c242 |
565 | SV * lobj = Nullsv; |
c8d69e4a |
566 | |
567 | if (sv_derived_from(ST(0), "version")) { |
6867be6d |
568 | /* XXX If tmp serves a purpose, explain it. */ |
c8d69e4a |
569 | SV *tmp = SvRV(ST(0)); |
570 | lobj = tmp; |
571 | } |
572 | else |
573 | Perl_croak(aTHX_ "lobj is not of type version"); |
574 | { |
6867be6d |
575 | const I32 len = av_len((AV *)lobj); |
576 | const I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); |
c8d69e4a |
577 | if ( digit < 0 ) |
578 | XSRETURN_YES; |
579 | else |
580 | XSRETURN_NO; |
581 | } |
582 | PUTBACK; |
583 | return; |
584 | } |
585 | } |
586 | |
137d6fc0 |
587 | XS(XS_version_qv) |
588 | { |
589 | dXSARGS; |
590 | if (items != 1) |
591 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
592 | SP -= items; |
593 | { |
594 | SV * ver = ST(0); |
595 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ |
596 | { |
597 | SV *vs = sv_newmortal(); |
598 | char *version; |
599 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
600 | { |
601 | char tbuf[64]; |
602 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
603 | version = savepv(tbuf); |
604 | } |
605 | else |
606 | { |
2e0de35c |
607 | version = savesvpv(ver); |
137d6fc0 |
608 | } |
609 | (void)scan_version(version,vs,TRUE); |
610 | Safefree(version); |
611 | |
612 | PUSHs(vs); |
613 | } |
614 | else |
615 | { |
616 | PUSHs(sv_2mortal(new_version(ver))); |
617 | } |
618 | |
619 | PUTBACK; |
620 | return; |
621 | } |
622 | } |
623 | |
8800c35a |
624 | XS(XS_utf8_is_utf8) |
625 | { |
41be1fbd |
626 | dXSARGS; |
627 | if (items != 1) |
628 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
629 | { |
6867be6d |
630 | const SV *sv = ST(0); |
41be1fbd |
631 | { |
632 | if (SvUTF8(sv)) |
633 | XSRETURN_YES; |
634 | else |
635 | XSRETURN_NO; |
636 | } |
637 | } |
638 | XSRETURN_EMPTY; |
8800c35a |
639 | } |
640 | |
1b026014 |
641 | XS(XS_utf8_valid) |
642 | { |
41be1fbd |
643 | dXSARGS; |
644 | if (items != 1) |
645 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
646 | { |
647 | SV * sv = ST(0); |
648 | { |
649 | STRLEN len; |
6867be6d |
650 | const char *s = SvPV(sv,len); |
651 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
41be1fbd |
652 | XSRETURN_YES; |
653 | else |
654 | XSRETURN_NO; |
655 | } |
656 | } |
657 | XSRETURN_EMPTY; |
1b026014 |
658 | } |
659 | |
660 | XS(XS_utf8_encode) |
661 | { |
662 | dXSARGS; |
663 | if (items != 1) |
664 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
665 | { |
666 | SV * sv = ST(0); |
667 | |
668 | sv_utf8_encode(sv); |
669 | } |
670 | XSRETURN_EMPTY; |
671 | } |
672 | |
673 | XS(XS_utf8_decode) |
674 | { |
675 | dXSARGS; |
676 | if (items != 1) |
677 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
678 | { |
679 | SV * sv = ST(0); |
6867be6d |
680 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
681 | ST(0) = boolSV(RETVAL); |
682 | sv_2mortal(ST(0)); |
683 | } |
684 | XSRETURN(1); |
685 | } |
686 | |
687 | XS(XS_utf8_upgrade) |
688 | { |
689 | dXSARGS; |
690 | if (items != 1) |
691 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
692 | { |
693 | SV * sv = ST(0); |
694 | STRLEN RETVAL; |
695 | dXSTARG; |
696 | |
697 | RETVAL = sv_utf8_upgrade(sv); |
698 | XSprePUSH; PUSHi((IV)RETVAL); |
699 | } |
700 | XSRETURN(1); |
701 | } |
702 | |
703 | XS(XS_utf8_downgrade) |
704 | { |
705 | dXSARGS; |
706 | if (items < 1 || items > 2) |
707 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
708 | { |
709 | SV * sv = ST(0); |
6867be6d |
710 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
711 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
712 | |
1b026014 |
713 | ST(0) = boolSV(RETVAL); |
714 | sv_2mortal(ST(0)); |
715 | } |
716 | XSRETURN(1); |
717 | } |
718 | |
719 | XS(XS_utf8_native_to_unicode) |
720 | { |
721 | dXSARGS; |
6867be6d |
722 | const UV uv = SvUV(ST(0)); |
b7953727 |
723 | |
724 | if (items > 1) |
725 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
726 | |
1b026014 |
727 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
728 | XSRETURN(1); |
729 | } |
730 | |
731 | XS(XS_utf8_unicode_to_native) |
732 | { |
733 | dXSARGS; |
6867be6d |
734 | const UV uv = SvUV(ST(0)); |
b7953727 |
735 | |
736 | if (items > 1) |
737 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
738 | |
1b026014 |
739 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
740 | XSRETURN(1); |
741 | } |
742 | |
14a976d6 |
743 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
744 | { |
745 | dXSARGS; |
746 | SV *sv = SvRV(ST(0)); |
6867be6d |
747 | |
29569577 |
748 | if (items == 1) { |
749 | if (SvREADONLY(sv)) |
750 | XSRETURN_YES; |
751 | else |
752 | XSRETURN_NO; |
753 | } |
754 | else if (items == 2) { |
755 | if (SvTRUE(ST(1))) { |
756 | SvREADONLY_on(sv); |
757 | XSRETURN_YES; |
758 | } |
759 | else { |
14a976d6 |
760 | /* I hope you really know what you are doing. */ |
29569577 |
761 | SvREADONLY_off(sv); |
762 | XSRETURN_NO; |
763 | } |
764 | } |
14a976d6 |
765 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
766 | } |
767 | |
14a976d6 |
768 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
769 | { |
770 | dXSARGS; |
771 | SV *sv = SvRV(ST(0)); |
6867be6d |
772 | |
29569577 |
773 | if (items == 1) |
14a976d6 |
774 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
775 | else if (items == 2) { |
14a976d6 |
776 | /* I hope you really know what you are doing. */ |
29569577 |
777 | SvREFCNT(sv) = SvIV(ST(1)); |
778 | XSRETURN_IV(SvREFCNT(sv)); |
779 | } |
14a976d6 |
780 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
781 | } |
782 | |
f044d0d1 |
783 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
784 | { |
785 | dXSARGS; |
786 | HV *hv = (HV *) SvRV(ST(0)); |
6867be6d |
787 | |
3540d4ce |
788 | if (items != 1) |
789 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
790 | hv_clear_placeholders(hv); |
dfd4ef2f |
791 | XSRETURN(0); |
792 | } |
39f7a870 |
793 | |
39cff0d9 |
794 | XS(XS_Regexp_DESTROY) |
795 | { |
39cff0d9 |
796 | } |
797 | |
39f7a870 |
798 | XS(XS_PerlIO_get_layers) |
799 | { |
800 | dXSARGS; |
801 | if (items < 1 || items % 2 == 0) |
802 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
803 | #ifdef USE_PERLIO |
39f7a870 |
804 | { |
805 | SV * sv; |
806 | GV * gv; |
807 | IO * io; |
808 | bool input = TRUE; |
809 | bool details = FALSE; |
810 | |
811 | if (items > 1) { |
39f7a870 |
812 | SV **svp; |
813 | |
814 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
815 | SV **varp = svp; |
816 | SV **valp = svp + 1; |
817 | STRLEN klen; |
6867be6d |
818 | const char *key = SvPV(*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); |
856 | else |
7a5fd60d |
857 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
39f7a870 |
858 | } |
859 | |
860 | if (gv && (io = GvIO(gv))) { |
861 | dTARGET; |
862 | AV* av = PerlIO_get_layers(aTHX_ input ? |
863 | IoIFP(io) : IoOFP(io)); |
864 | I32 i; |
865 | I32 last = av_len(av); |
866 | I32 nitem = 0; |
867 | |
868 | for (i = last; i >= 0; i -= 3) { |
869 | SV **namsvp; |
870 | SV **argsvp; |
871 | SV **flgsvp; |
872 | bool namok, argok, flgok; |
873 | |
874 | namsvp = av_fetch(av, i - 2, FALSE); |
875 | argsvp = av_fetch(av, i - 1, FALSE); |
876 | flgsvp = av_fetch(av, i, FALSE); |
877 | |
878 | namok = namsvp && *namsvp && SvPOK(*namsvp); |
879 | argok = argsvp && *argsvp && SvPOK(*argsvp); |
880 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
881 | |
882 | if (details) { |
883 | XPUSHs(namok ? |
95a20fc0 |
884 | newSVpv(SvPVX_const(*namsvp), 0) : &PL_sv_undef); |
39f7a870 |
885 | XPUSHs(argok ? |
95a20fc0 |
886 | newSVpv(SvPVX_const(*argsvp), 0) : &PL_sv_undef); |
39f7a870 |
887 | if (flgok) |
888 | XPUSHi(SvIVX(*flgsvp)); |
889 | else |
890 | XPUSHs(&PL_sv_undef); |
891 | nitem += 3; |
892 | } |
893 | else { |
894 | if (namok && argok) |
895 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
896 | *namsvp, *argsvp)); |
897 | else if (namok) |
898 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
899 | else |
900 | XPUSHs(&PL_sv_undef); |
901 | nitem++; |
902 | if (flgok) { |
903 | IV flags = SvIVX(*flgsvp); |
904 | |
905 | if (flags & PERLIO_F_UTF8) { |
906 | XPUSHs(newSVpvn("utf8", 4)); |
907 | nitem++; |
908 | } |
909 | } |
910 | } |
911 | } |
912 | |
913 | SvREFCNT_dec(av); |
914 | |
915 | XSRETURN(nitem); |
916 | } |
917 | } |
5fef3b4a |
918 | #endif |
39f7a870 |
919 | |
920 | XSRETURN(0); |
921 | } |
922 | |
9a7034eb |
923 | XS(XS_Internals_hash_seed) |
c910b28a |
924 | { |
c85d3f85 |
925 | /* Using dXSARGS would also have dITEM and dSP, |
926 | * which define 2 unused local variables. */ |
557b887a |
927 | dAXMARK; |
81eaca17 |
928 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
929 | } |
930 | |
008fb0c0 |
931 | XS(XS_Internals_rehash_seed) |
8e90d776 |
932 | { |
933 | /* Using dXSARGS would also have dITEM and dSP, |
934 | * which define 2 unused local variables. */ |
557b887a |
935 | dAXMARK; |
008fb0c0 |
936 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
937 | } |
938 | |
05619474 |
939 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
940 | { |
941 | dXSARGS; |
942 | if (SvROK(ST(0))) { |
6867be6d |
943 | const HV *hv = (HV *) SvRV(ST(0)); |
05619474 |
944 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
945 | if (HvREHASH(hv)) |
946 | XSRETURN_YES; |
947 | else |
948 | XSRETURN_NO; |
949 | } |
950 | } |
951 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
952 | } |
241d1a3b |
953 | |
954 | /* |
955 | * Local variables: |
956 | * c-indentation-style: bsd |
957 | * c-basic-offset: 4 |
958 | * indent-tabs-mode: t |
959 | * End: |
960 | * |
37442d52 |
961 | * ex: set ts=8 sts=4 sw=4 noet: |
962 | */ |