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; |
6d4a7be2 |
43 | |
301daebc |
44 | /* A stash/class can go by many names (ie. User == main::User), so |
45 | we compare the stash itself just in case */ |
46 | if (name_stash && (stash == name_stash)) |
47 | return &PL_sv_yes; |
6d4a7be2 |
48 | |
46e4b22b |
49 | if (strEQ(HvNAME(stash), name)) |
3280af22 |
50 | return &PL_sv_yes; |
6d4a7be2 |
51 | |
a1d407e8 |
52 | if (strEQ(name, "UNIVERSAL")) |
53 | return &PL_sv_yes; |
54 | |
6d4a7be2 |
55 | if (level > 100) |
46e4b22b |
56 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
57 | HvNAME(stash)); |
6d4a7be2 |
58 | |
59 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE); |
60 | |
46e4b22b |
61 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (subgen = GvSV(gv)) |
62 | && (hv = GvHV(gv))) |
63 | { |
eb160463 |
64 | if (SvIV(subgen) == (IV)PL_sub_generation) { |
46e4b22b |
65 | SV* sv; |
66 | SV** svp = (SV**)hv_fetch(hv, name, len, FALSE); |
67 | if (svp && (sv = *svp) != (SV*)&PL_sv_undef) { |
68 | DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n", |
69 | name, HvNAME(stash)) ); |
70 | return sv; |
71 | } |
72 | } |
73 | else { |
74 | DEBUG_o( Perl_deb(aTHX_ "ISA Cache in package %s is stale\n", |
75 | HvNAME(stash)) ); |
76 | hv_clear(hv); |
77 | sv_setiv(subgen, PL_sub_generation); |
78 | } |
6d4a7be2 |
79 | } |
80 | |
81 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
46e4b22b |
82 | |
3280af22 |
83 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
46e4b22b |
84 | if (!hv || !subgen) { |
6d4a7be2 |
85 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, TRUE); |
86 | |
87 | gv = *gvp; |
88 | |
89 | if (SvTYPE(gv) != SVt_PVGV) |
90 | gv_init(gv, stash, "::ISA::CACHE::", 14, TRUE); |
91 | |
46e4b22b |
92 | if (!hv) |
93 | hv = GvHVn(gv); |
94 | if (!subgen) { |
95 | subgen = newSViv(PL_sub_generation); |
96 | GvSV(gv) = subgen; |
97 | } |
6d4a7be2 |
98 | } |
46e4b22b |
99 | if (hv) { |
6d4a7be2 |
100 | SV** svp = AvARRAY(av); |
93965878 |
101 | /* NOTE: No support for tied ISA */ |
102 | I32 items = AvFILLp(av) + 1; |
6d4a7be2 |
103 | while (items--) { |
104 | SV* sv = *svp++; |
105 | HV* basestash = gv_stashsv(sv, FALSE); |
106 | if (!basestash) { |
599cee73 |
107 | if (ckWARN(WARN_MISC)) |
9014280d |
108 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d |
109 | "Can't locate package %"SVf" for @%s::ISA", |
110 | sv, HvNAME(stash)); |
6d4a7be2 |
111 | continue; |
112 | } |
301daebc |
113 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
114 | len, level + 1)) { |
3280af22 |
115 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
116 | return &PL_sv_yes; |
6d4a7be2 |
117 | } |
118 | } |
3280af22 |
119 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 |
120 | } |
121 | } |
a1d407e8 |
122 | return &PL_sv_no; |
6d4a7be2 |
123 | } |
124 | |
954c1994 |
125 | /* |
ccfc67b7 |
126 | =head1 SV Manipulation Functions |
127 | |
954c1994 |
128 | =for apidoc sv_derived_from |
129 | |
130 | Returns a boolean indicating whether the SV is derived from the specified |
131 | class. This is the function that implements C<UNIVERSAL::isa>. It works |
132 | for class names as well as for objects. |
133 | |
134 | =cut |
135 | */ |
136 | |
55497cff |
137 | bool |
864dbfa3 |
138 | Perl_sv_derived_from(pTHX_ SV *sv, const char *name) |
55497cff |
139 | { |
e1ec3a88 |
140 | const char *type; |
55497cff |
141 | HV *stash; |
301daebc |
142 | HV *name_stash; |
46e4b22b |
143 | |
55497cff |
144 | stash = Nullhv; |
145 | type = Nullch; |
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 | |
acfe0abc |
171 | void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
172 | void XS_UNIVERSAL_can(pTHX_ CV *cv); |
173 | 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; |
6867be6d |
254 | (void)cv; |
6d4a7be2 |
255 | |
256 | if (items != 2) |
cea2e8a9 |
257 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 |
258 | |
259 | sv = ST(0); |
f8f70380 |
260 | |
d3f7f2b2 |
261 | if (SvGMAGICAL(sv)) |
262 | mg_get(sv); |
263 | |
253ecd6d |
264 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
265 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
266 | XSRETURN_UNDEF; |
267 | |
6867be6d |
268 | name = (const char *)SvPV(ST(1),n_a); |
6d4a7be2 |
269 | |
54310121 |
270 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 |
271 | XSRETURN(1); |
272 | } |
273 | |
6d4a7be2 |
274 | XS(XS_UNIVERSAL_can) |
275 | { |
276 | dXSARGS; |
277 | SV *sv; |
6867be6d |
278 | const char *name; |
6d4a7be2 |
279 | SV *rv; |
6f08146e |
280 | HV *pkg = NULL; |
2d8e6c8d |
281 | STRLEN n_a; |
6867be6d |
282 | (void)cv; |
6d4a7be2 |
283 | |
284 | if (items != 2) |
cea2e8a9 |
285 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 |
286 | |
287 | sv = ST(0); |
f8f70380 |
288 | |
d3f7f2b2 |
289 | if (SvGMAGICAL(sv)) |
290 | mg_get(sv); |
291 | |
253ecd6d |
292 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
293 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
294 | XSRETURN_UNDEF; |
295 | |
6867be6d |
296 | name = (const char *)SvPV(ST(1),n_a); |
3280af22 |
297 | rv = &PL_sv_undef; |
6d4a7be2 |
298 | |
46e4b22b |
299 | if (SvROK(sv)) { |
6f08146e |
300 | sv = (SV*)SvRV(sv); |
46e4b22b |
301 | if (SvOBJECT(sv)) |
6f08146e |
302 | pkg = SvSTASH(sv); |
303 | } |
304 | else { |
305 | pkg = gv_stashsv(sv, FALSE); |
306 | } |
307 | |
308 | if (pkg) { |
dc848c6f |
309 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
310 | if (gv && isGV(gv)) |
311 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); |
6d4a7be2 |
312 | } |
313 | |
314 | ST(0) = rv; |
315 | XSRETURN(1); |
316 | } |
317 | |
6d4a7be2 |
318 | XS(XS_UNIVERSAL_VERSION) |
319 | { |
320 | dXSARGS; |
321 | HV *pkg; |
322 | GV **gvp; |
323 | GV *gv; |
324 | SV *sv; |
e1ec3a88 |
325 | const char *undef; |
6867be6d |
326 | (void)cv; |
6d4a7be2 |
327 | |
1571675a |
328 | if (SvROK(ST(0))) { |
6d4a7be2 |
329 | sv = (SV*)SvRV(ST(0)); |
1571675a |
330 | if (!SvOBJECT(sv)) |
cea2e8a9 |
331 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 |
332 | pkg = SvSTASH(sv); |
333 | } |
334 | else { |
335 | pkg = gv_stashsv(ST(0), FALSE); |
336 | } |
337 | |
338 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); |
339 | |
d4bea2fb |
340 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 |
341 | SV *nsv = sv_newmortal(); |
342 | sv_setsv(nsv, sv); |
343 | sv = nsv; |
137d6fc0 |
344 | if ( !sv_derived_from(sv, "version")) |
345 | upg_version(sv); |
6d4a7be2 |
346 | undef = Nullch; |
347 | } |
348 | else { |
3280af22 |
349 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 |
350 | undef = "(undef)"; |
351 | } |
352 | |
1571675a |
353 | if (items > 1) { |
354 | STRLEN len; |
355 | SV *req = ST(1); |
356 | |
62658f4d |
357 | if (undef) { |
358 | if (pkg) |
359 | Perl_croak(aTHX_ |
360 | "%s does not define $%s::VERSION--version check failed", |
361 | HvNAME(pkg), HvNAME(pkg)); |
362 | else { |
e1ec3a88 |
363 | const char *str = SvPVx(ST(0), len); |
62658f4d |
364 | |
365 | Perl_croak(aTHX_ |
366 | "%s defines neither package nor VERSION--version check failed", str); |
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--" |
380 | "this is only version %"SVf" (%"SVf")", HvNAME(pkg), |
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; |
6867be6d |
396 | (void)cv; |
129318bd |
397 | if (items > 3) |
439cb1c4 |
398 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
399 | SP -= items; |
400 | { |
0723351e |
401 | const char *classname = SvPV_nolen(ST(0)); |
137d6fc0 |
402 | SV *vs = ST(1); |
403 | SV *rv; |
129318bd |
404 | if (items == 3 ) |
405 | { |
137d6fc0 |
406 | vs = sv_newmortal(); |
407 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen(ST(2))); |
129318bd |
408 | } |
439cb1c4 |
409 | |
137d6fc0 |
410 | rv = new_version(vs); |
0723351e |
411 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
412 | sv_bless(rv, gv_stashpv(classname,TRUE)); |
137d6fc0 |
413 | |
414 | PUSHs(sv_2mortal(rv)); |
439cb1c4 |
415 | PUTBACK; |
416 | return; |
417 | } |
418 | } |
419 | |
420 | XS(XS_version_stringify) |
421 | { |
41be1fbd |
422 | dXSARGS; |
6867be6d |
423 | (void)cv; |
41be1fbd |
424 | if (items < 1) |
425 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
426 | SP -= items; |
427 | { |
428 | SV * lobj; |
429 | |
430 | if (sv_derived_from(ST(0), "version")) { |
431 | SV *tmp = SvRV(ST(0)); |
432 | lobj = tmp; |
433 | } |
434 | else |
435 | Perl_croak(aTHX_ "lobj is not of type version"); |
436 | |
137d6fc0 |
437 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
438 | |
439 | PUTBACK; |
440 | return; |
441 | } |
439cb1c4 |
442 | } |
443 | |
444 | XS(XS_version_numify) |
445 | { |
41be1fbd |
446 | dXSARGS; |
6867be6d |
447 | (void)cv; |
41be1fbd |
448 | if (items < 1) |
449 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
450 | SP -= items; |
451 | { |
452 | SV * lobj; |
453 | |
454 | if (sv_derived_from(ST(0), "version")) { |
455 | SV *tmp = SvRV(ST(0)); |
456 | lobj = tmp; |
457 | } |
458 | else |
459 | Perl_croak(aTHX_ "lobj is not of type version"); |
460 | |
137d6fc0 |
461 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
462 | |
463 | PUTBACK; |
464 | return; |
465 | } |
439cb1c4 |
466 | } |
467 | |
468 | XS(XS_version_vcmp) |
469 | { |
41be1fbd |
470 | dXSARGS; |
6867be6d |
471 | (void)cv; |
41be1fbd |
472 | if (items < 1) |
473 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
474 | SP -= items; |
475 | { |
476 | SV * lobj; |
477 | |
478 | if (sv_derived_from(ST(0), "version")) { |
479 | SV *tmp = SvRV(ST(0)); |
480 | lobj = tmp; |
481 | } |
482 | else |
483 | Perl_croak(aTHX_ "lobj is not of type version"); |
484 | |
485 | { |
486 | SV *rs; |
487 | SV *rvs; |
488 | SV * robj = ST(1); |
489 | IV swap = (IV)SvIV(ST(2)); |
490 | |
491 | if ( ! sv_derived_from(robj, "version") ) |
492 | { |
493 | robj = new_version(robj); |
494 | } |
495 | rvs = SvRV(robj); |
496 | |
497 | if ( swap ) |
498 | { |
499 | rs = newSViv(vcmp(rvs,lobj)); |
500 | } |
501 | else |
502 | { |
503 | rs = newSViv(vcmp(lobj,rvs)); |
504 | } |
505 | |
137d6fc0 |
506 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
507 | } |
508 | |
509 | PUTBACK; |
510 | return; |
511 | } |
439cb1c4 |
512 | } |
513 | |
514 | XS(XS_version_boolean) |
515 | { |
41be1fbd |
516 | dXSARGS; |
6867be6d |
517 | (void)cv; |
41be1fbd |
518 | if (items < 1) |
519 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
520 | SP -= items; |
521 | { |
522 | SV * lobj; |
523 | |
524 | if (sv_derived_from(ST(0), "version")) { |
6867be6d |
525 | /* XXX If tmp serves a purpose, explain it. */ |
41be1fbd |
526 | SV *tmp = SvRV(ST(0)); |
527 | lobj = tmp; |
528 | } |
529 | else |
530 | Perl_croak(aTHX_ "lobj is not of type version"); |
531 | |
532 | { |
533 | SV *rs; |
534 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
137d6fc0 |
535 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
536 | } |
537 | |
538 | PUTBACK; |
539 | return; |
540 | } |
439cb1c4 |
541 | } |
542 | |
543 | XS(XS_version_noop) |
544 | { |
41be1fbd |
545 | dXSARGS; |
6867be6d |
546 | (void)cv; |
41be1fbd |
547 | if (items < 1) |
548 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
549 | { |
550 | SV * lobj; |
551 | |
552 | if (sv_derived_from(ST(0), "version")) { |
553 | SV *tmp = SvRV(ST(0)); |
554 | lobj = tmp; |
555 | } |
556 | else |
557 | Perl_croak(aTHX_ "lobj is not of type version"); |
558 | |
559 | { |
560 | Perl_croak(aTHX_ "operation not supported with version object"); |
561 | } |
562 | |
563 | } |
564 | XSRETURN_EMPTY; |
439cb1c4 |
565 | } |
566 | |
c8d69e4a |
567 | XS(XS_version_is_alpha) |
568 | { |
569 | dXSARGS; |
6867be6d |
570 | (void)cv; |
c8d69e4a |
571 | if (items != 1) |
572 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
573 | SP -= items; |
574 | { |
575 | SV *lobj; |
576 | |
577 | if (sv_derived_from(ST(0), "version")) { |
6867be6d |
578 | /* XXX If tmp serves a purpose, explain it. */ |
c8d69e4a |
579 | SV *tmp = SvRV(ST(0)); |
580 | lobj = tmp; |
581 | } |
582 | else |
583 | Perl_croak(aTHX_ "lobj is not of type version"); |
584 | { |
6867be6d |
585 | const I32 len = av_len((AV *)lobj); |
586 | const I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); |
c8d69e4a |
587 | if ( digit < 0 ) |
588 | XSRETURN_YES; |
589 | else |
590 | XSRETURN_NO; |
591 | } |
592 | PUTBACK; |
593 | return; |
594 | } |
595 | } |
596 | |
137d6fc0 |
597 | XS(XS_version_qv) |
598 | { |
599 | dXSARGS; |
6867be6d |
600 | (void)cv; |
137d6fc0 |
601 | if (items != 1) |
602 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
603 | SP -= items; |
604 | { |
605 | SV * ver = ST(0); |
606 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ |
607 | { |
608 | SV *vs = sv_newmortal(); |
609 | char *version; |
610 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
611 | { |
612 | char tbuf[64]; |
613 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
614 | version = savepv(tbuf); |
615 | } |
616 | else |
617 | { |
2e0de35c |
618 | version = savesvpv(ver); |
137d6fc0 |
619 | } |
620 | (void)scan_version(version,vs,TRUE); |
621 | Safefree(version); |
622 | |
623 | PUSHs(vs); |
624 | } |
625 | else |
626 | { |
627 | PUSHs(sv_2mortal(new_version(ver))); |
628 | } |
629 | |
630 | PUTBACK; |
631 | return; |
632 | } |
633 | } |
634 | |
8800c35a |
635 | XS(XS_utf8_is_utf8) |
636 | { |
41be1fbd |
637 | dXSARGS; |
6867be6d |
638 | (void)cv; |
41be1fbd |
639 | if (items != 1) |
640 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
641 | { |
6867be6d |
642 | const SV *sv = ST(0); |
41be1fbd |
643 | { |
644 | if (SvUTF8(sv)) |
645 | XSRETURN_YES; |
646 | else |
647 | XSRETURN_NO; |
648 | } |
649 | } |
650 | XSRETURN_EMPTY; |
8800c35a |
651 | } |
652 | |
1b026014 |
653 | XS(XS_utf8_valid) |
654 | { |
41be1fbd |
655 | dXSARGS; |
6867be6d |
656 | (void)cv; |
41be1fbd |
657 | if (items != 1) |
658 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
659 | { |
660 | SV * sv = ST(0); |
661 | { |
662 | STRLEN len; |
6867be6d |
663 | const char *s = SvPV(sv,len); |
664 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
41be1fbd |
665 | XSRETURN_YES; |
666 | else |
667 | XSRETURN_NO; |
668 | } |
669 | } |
670 | XSRETURN_EMPTY; |
1b026014 |
671 | } |
672 | |
673 | XS(XS_utf8_encode) |
674 | { |
675 | dXSARGS; |
6867be6d |
676 | (void)cv; |
1b026014 |
677 | if (items != 1) |
678 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
679 | { |
680 | SV * sv = ST(0); |
681 | |
682 | sv_utf8_encode(sv); |
683 | } |
684 | XSRETURN_EMPTY; |
685 | } |
686 | |
687 | XS(XS_utf8_decode) |
688 | { |
689 | dXSARGS; |
6867be6d |
690 | (void)cv; |
1b026014 |
691 | if (items != 1) |
692 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
693 | { |
694 | SV * sv = ST(0); |
6867be6d |
695 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
696 | ST(0) = boolSV(RETVAL); |
697 | sv_2mortal(ST(0)); |
698 | } |
699 | XSRETURN(1); |
700 | } |
701 | |
702 | XS(XS_utf8_upgrade) |
703 | { |
704 | dXSARGS; |
6867be6d |
705 | (void)cv; |
1b026014 |
706 | if (items != 1) |
707 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
708 | { |
709 | SV * sv = ST(0); |
710 | STRLEN RETVAL; |
711 | dXSTARG; |
712 | |
713 | RETVAL = sv_utf8_upgrade(sv); |
714 | XSprePUSH; PUSHi((IV)RETVAL); |
715 | } |
716 | XSRETURN(1); |
717 | } |
718 | |
719 | XS(XS_utf8_downgrade) |
720 | { |
721 | dXSARGS; |
6867be6d |
722 | (void)cv; |
1b026014 |
723 | if (items < 1 || items > 2) |
724 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
725 | { |
726 | SV * sv = ST(0); |
6867be6d |
727 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
728 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
729 | |
1b026014 |
730 | ST(0) = boolSV(RETVAL); |
731 | sv_2mortal(ST(0)); |
732 | } |
733 | XSRETURN(1); |
734 | } |
735 | |
736 | XS(XS_utf8_native_to_unicode) |
737 | { |
738 | dXSARGS; |
6867be6d |
739 | const UV uv = SvUV(ST(0)); |
740 | (void)cv; |
b7953727 |
741 | |
742 | if (items > 1) |
743 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
744 | |
1b026014 |
745 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
746 | XSRETURN(1); |
747 | } |
748 | |
749 | XS(XS_utf8_unicode_to_native) |
750 | { |
751 | dXSARGS; |
6867be6d |
752 | const UV uv = SvUV(ST(0)); |
753 | (void)cv; |
b7953727 |
754 | |
755 | if (items > 1) |
756 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
757 | |
1b026014 |
758 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
759 | XSRETURN(1); |
760 | } |
761 | |
14a976d6 |
762 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
763 | { |
764 | dXSARGS; |
765 | SV *sv = SvRV(ST(0)); |
6867be6d |
766 | (void)cv; |
767 | |
29569577 |
768 | if (items == 1) { |
769 | if (SvREADONLY(sv)) |
770 | XSRETURN_YES; |
771 | else |
772 | XSRETURN_NO; |
773 | } |
774 | else if (items == 2) { |
775 | if (SvTRUE(ST(1))) { |
776 | SvREADONLY_on(sv); |
777 | XSRETURN_YES; |
778 | } |
779 | else { |
14a976d6 |
780 | /* I hope you really know what you are doing. */ |
29569577 |
781 | SvREADONLY_off(sv); |
782 | XSRETURN_NO; |
783 | } |
784 | } |
14a976d6 |
785 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
786 | } |
787 | |
14a976d6 |
788 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
789 | { |
790 | dXSARGS; |
791 | SV *sv = SvRV(ST(0)); |
6867be6d |
792 | (void)cv; |
793 | |
29569577 |
794 | if (items == 1) |
14a976d6 |
795 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
796 | else if (items == 2) { |
14a976d6 |
797 | /* I hope you really know what you are doing. */ |
29569577 |
798 | SvREFCNT(sv) = SvIV(ST(1)); |
799 | XSRETURN_IV(SvREFCNT(sv)); |
800 | } |
14a976d6 |
801 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
802 | } |
803 | |
f044d0d1 |
804 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
805 | { |
806 | dXSARGS; |
807 | HV *hv = (HV *) SvRV(ST(0)); |
6867be6d |
808 | (void)cv; |
809 | |
3540d4ce |
810 | if (items != 1) |
811 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
812 | hv_clear_placeholders(hv); |
dfd4ef2f |
813 | XSRETURN(0); |
814 | } |
39f7a870 |
815 | |
39cff0d9 |
816 | XS(XS_Regexp_DESTROY) |
817 | { |
6867be6d |
818 | (void)cv; |
39cff0d9 |
819 | } |
820 | |
39f7a870 |
821 | XS(XS_PerlIO_get_layers) |
822 | { |
823 | dXSARGS; |
6867be6d |
824 | (void)cv; |
39f7a870 |
825 | if (items < 1 || items % 2 == 0) |
826 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
827 | #ifdef USE_PERLIO |
39f7a870 |
828 | { |
829 | SV * sv; |
830 | GV * gv; |
831 | IO * io; |
832 | bool input = TRUE; |
833 | bool details = FALSE; |
834 | |
835 | if (items > 1) { |
39f7a870 |
836 | SV **svp; |
837 | |
838 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
839 | SV **varp = svp; |
840 | SV **valp = svp + 1; |
841 | STRLEN klen; |
6867be6d |
842 | const char *key = SvPV(*varp, klen); |
39f7a870 |
843 | |
844 | switch (*key) { |
845 | case 'i': |
846 | if (klen == 5 && memEQ(key, "input", 5)) { |
847 | input = SvTRUE(*valp); |
848 | break; |
849 | } |
850 | goto fail; |
851 | case 'o': |
852 | if (klen == 6 && memEQ(key, "output", 6)) { |
853 | input = !SvTRUE(*valp); |
854 | break; |
855 | } |
856 | goto fail; |
857 | case 'd': |
858 | if (klen == 7 && memEQ(key, "details", 7)) { |
859 | details = SvTRUE(*valp); |
860 | break; |
861 | } |
862 | goto fail; |
863 | default: |
864 | fail: |
865 | Perl_croak(aTHX_ |
866 | "get_layers: unknown argument '%s'", |
867 | key); |
868 | } |
869 | } |
870 | |
871 | SP -= (items - 1); |
872 | } |
873 | |
874 | sv = POPs; |
875 | gv = (GV*)sv; |
876 | |
877 | if (!isGV(sv)) { |
878 | if (SvROK(sv) && isGV(SvRV(sv))) |
879 | gv = (GV*)SvRV(sv); |
880 | else |
7a5fd60d |
881 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
39f7a870 |
882 | } |
883 | |
884 | if (gv && (io = GvIO(gv))) { |
885 | dTARGET; |
886 | AV* av = PerlIO_get_layers(aTHX_ input ? |
887 | IoIFP(io) : IoOFP(io)); |
888 | I32 i; |
889 | I32 last = av_len(av); |
890 | I32 nitem = 0; |
891 | |
892 | for (i = last; i >= 0; i -= 3) { |
893 | SV **namsvp; |
894 | SV **argsvp; |
895 | SV **flgsvp; |
896 | bool namok, argok, flgok; |
897 | |
898 | namsvp = av_fetch(av, i - 2, FALSE); |
899 | argsvp = av_fetch(av, i - 1, FALSE); |
900 | flgsvp = av_fetch(av, i, FALSE); |
901 | |
902 | namok = namsvp && *namsvp && SvPOK(*namsvp); |
903 | argok = argsvp && *argsvp && SvPOK(*argsvp); |
904 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
905 | |
906 | if (details) { |
907 | XPUSHs(namok ? |
908 | newSVpv(SvPVX(*namsvp), 0) : &PL_sv_undef); |
909 | XPUSHs(argok ? |
910 | newSVpv(SvPVX(*argsvp), 0) : &PL_sv_undef); |
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")", |
920 | *namsvp, *argsvp)); |
921 | else if (namok) |
922 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
923 | else |
924 | XPUSHs(&PL_sv_undef); |
925 | nitem++; |
926 | if (flgok) { |
927 | IV flags = SvIVX(*flgsvp); |
928 | |
929 | if (flags & PERLIO_F_UTF8) { |
930 | XPUSHs(newSVpvn("utf8", 4)); |
931 | nitem++; |
932 | } |
933 | } |
934 | } |
935 | } |
936 | |
937 | SvREFCNT_dec(av); |
938 | |
939 | XSRETURN(nitem); |
940 | } |
941 | } |
5fef3b4a |
942 | #endif |
39f7a870 |
943 | |
944 | XSRETURN(0); |
945 | } |
946 | |
9a7034eb |
947 | XS(XS_Internals_hash_seed) |
c910b28a |
948 | { |
c85d3f85 |
949 | /* Using dXSARGS would also have dITEM and dSP, |
950 | * which define 2 unused local variables. */ |
951 | dMARK; dAX; |
6867be6d |
952 | (void)cv; |
81eaca17 |
953 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
954 | } |
955 | |
008fb0c0 |
956 | XS(XS_Internals_rehash_seed) |
8e90d776 |
957 | { |
958 | /* Using dXSARGS would also have dITEM and dSP, |
959 | * which define 2 unused local variables. */ |
960 | dMARK; dAX; |
6867be6d |
961 | (void)cv; |
008fb0c0 |
962 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
963 | } |
964 | |
05619474 |
965 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
966 | { |
967 | dXSARGS; |
6867be6d |
968 | (void)cv; |
05619474 |
969 | if (SvROK(ST(0))) { |
6867be6d |
970 | const HV *hv = (HV *) SvRV(ST(0)); |
05619474 |
971 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
972 | if (HvREHASH(hv)) |
973 | XSRETURN_YES; |
974 | else |
975 | XSRETURN_NO; |
976 | } |
977 | } |
978 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
979 | } |
241d1a3b |
980 | |
981 | /* |
982 | * Local variables: |
983 | * c-indentation-style: bsd |
984 | * c-basic-offset: 4 |
985 | * indent-tabs-mode: t |
986 | * End: |
987 | * |
edf815fd |
988 | * vim: shiftwidth=4: |
241d1a3b |
989 | */ |