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); |
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); |
0cb96387 |
202 | |
203 | void |
204 | Perl_boot_core_UNIVERSAL(pTHX) |
205 | { |
e1ec3a88 |
206 | const char file[] = __FILE__; |
0cb96387 |
207 | |
208 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); |
209 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); |
210 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); |
439cb1c4 |
211 | { |
ad63d80f |
212 | /* register the overloading (type 'A') magic */ |
213 | PL_amagic_generation++; |
439cb1c4 |
214 | /* Make it findable via fetchmethod */ |
be2ebcad |
215 | newXS("version::()", XS_version_noop, file); |
439cb1c4 |
216 | newXS("version::new", XS_version_new, file); |
217 | newXS("version::(\"\"", XS_version_stringify, file); |
218 | newXS("version::stringify", XS_version_stringify, file); |
219 | newXS("version::(0+", XS_version_numify, file); |
220 | newXS("version::numify", XS_version_numify, file); |
221 | newXS("version::(cmp", XS_version_vcmp, file); |
222 | newXS("version::(<=>", XS_version_vcmp, file); |
223 | newXS("version::vcmp", XS_version_vcmp, file); |
224 | newXS("version::(bool", XS_version_boolean, file); |
225 | newXS("version::boolean", XS_version_boolean, file); |
226 | newXS("version::(nomethod", XS_version_noop, file); |
227 | newXS("version::noop", XS_version_noop, file); |
c8d69e4a |
228 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 |
229 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 |
230 | } |
8800c35a |
231 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 |
232 | newXS("utf8::valid", XS_utf8_valid, file); |
233 | newXS("utf8::encode", XS_utf8_encode, file); |
234 | newXS("utf8::decode", XS_utf8_decode, file); |
235 | newXS("utf8::upgrade", XS_utf8_upgrade, file); |
236 | newXS("utf8::downgrade", XS_utf8_downgrade, file); |
237 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); |
238 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); |
29569577 |
239 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
240 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); |
dfd4ef2f |
241 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 |
242 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce |
243 | newXSproto("PerlIO::get_layers", |
244 | XS_PerlIO_get_layers, file, "*;@"); |
39cff0d9 |
245 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb |
246 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 |
247 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 |
248 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 |
249 | } |
250 | |
55497cff |
251 | |
6d4a7be2 |
252 | XS(XS_UNIVERSAL_isa) |
253 | { |
254 | dXSARGS; |
55497cff |
255 | SV *sv; |
6867be6d |
256 | const char *name; |
2d8e6c8d |
257 | STRLEN n_a; |
6d4a7be2 |
258 | |
259 | if (items != 2) |
cea2e8a9 |
260 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 |
261 | |
262 | sv = ST(0); |
f8f70380 |
263 | |
d3f7f2b2 |
264 | if (SvGMAGICAL(sv)) |
265 | mg_get(sv); |
266 | |
253ecd6d |
267 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
268 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) |
f8f70380 |
269 | XSRETURN_UNDEF; |
270 | |
e62f0680 |
271 | name = SvPV_const(ST(1),n_a); |
6d4a7be2 |
272 | |
54310121 |
273 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 |
274 | XSRETURN(1); |
275 | } |
276 | |
6d4a7be2 |
277 | XS(XS_UNIVERSAL_can) |
278 | { |
279 | dXSARGS; |
280 | SV *sv; |
6867be6d |
281 | const char *name; |
6d4a7be2 |
282 | SV *rv; |
6f08146e |
283 | HV *pkg = NULL; |
2d8e6c8d |
284 | STRLEN n_a; |
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 | |
e62f0680 |
298 | name = SvPV_const(ST(1),n_a); |
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 | STRLEN n_a; |
365 | Perl_croak(aTHX_ |
366 | "%s defines neither package nor VERSION--version check failed", |
367 | SvPVx(ST(0),n_a) ); |
62658f4d |
368 | } |
369 | } |
ad63d80f |
370 | |
137d6fc0 |
371 | if ( !sv_derived_from(req, "version")) { |
372 | /* req may very well be R/O, so create a new object */ |
373 | SV *nsv = sv_newmortal(); |
374 | sv_setsv(nsv, req); |
375 | req = nsv; |
376 | upg_version(req); |
377 | } |
1571675a |
378 | |
137d6fc0 |
379 | if ( vcmp( req, sv ) > 0 ) |
b9381830 |
380 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
bfcb3514 |
381 | "this is only version %"SVf" (%"SVf")", HvNAME_get(pkg), |
b9381830 |
382 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); |
2d8e6c8d |
383 | } |
6d4a7be2 |
384 | |
2b140d5b |
385 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 |
386 | ST(0) = vnumify(sv); |
13f8f398 |
387 | } else { |
388 | ST(0) = sv; |
b38a9dc5 |
389 | } |
6d4a7be2 |
390 | |
391 | XSRETURN(1); |
392 | } |
393 | |
439cb1c4 |
394 | XS(XS_version_new) |
395 | { |
396 | dXSARGS; |
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; |
423 | if (items < 1) |
424 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); |
425 | SP -= items; |
426 | { |
abb2c242 |
427 | SV * lobj = Nullsv; |
41be1fbd |
428 | |
429 | if (sv_derived_from(ST(0), "version")) { |
430 | SV *tmp = SvRV(ST(0)); |
431 | lobj = tmp; |
432 | } |
433 | else |
434 | Perl_croak(aTHX_ "lobj is not of type version"); |
435 | |
137d6fc0 |
436 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd |
437 | |
438 | PUTBACK; |
439 | return; |
440 | } |
439cb1c4 |
441 | } |
442 | |
443 | XS(XS_version_numify) |
444 | { |
41be1fbd |
445 | dXSARGS; |
446 | if (items < 1) |
447 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); |
448 | SP -= items; |
449 | { |
abb2c242 |
450 | SV * lobj = Nullsv; |
41be1fbd |
451 | |
452 | if (sv_derived_from(ST(0), "version")) { |
453 | SV *tmp = SvRV(ST(0)); |
454 | lobj = tmp; |
455 | } |
456 | else |
457 | Perl_croak(aTHX_ "lobj is not of type version"); |
458 | |
137d6fc0 |
459 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd |
460 | |
461 | PUTBACK; |
462 | return; |
463 | } |
439cb1c4 |
464 | } |
465 | |
466 | XS(XS_version_vcmp) |
467 | { |
41be1fbd |
468 | dXSARGS; |
469 | if (items < 1) |
470 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); |
471 | SP -= items; |
472 | { |
abb2c242 |
473 | SV * lobj = Nullsv; |
41be1fbd |
474 | |
475 | if (sv_derived_from(ST(0), "version")) { |
476 | SV *tmp = SvRV(ST(0)); |
477 | lobj = tmp; |
478 | } |
479 | else |
480 | Perl_croak(aTHX_ "lobj is not of type version"); |
481 | |
482 | { |
483 | SV *rs; |
484 | SV *rvs; |
485 | SV * robj = ST(1); |
486 | IV swap = (IV)SvIV(ST(2)); |
487 | |
488 | if ( ! sv_derived_from(robj, "version") ) |
489 | { |
490 | robj = new_version(robj); |
491 | } |
492 | rvs = SvRV(robj); |
493 | |
494 | if ( swap ) |
495 | { |
496 | rs = newSViv(vcmp(rvs,lobj)); |
497 | } |
498 | else |
499 | { |
500 | rs = newSViv(vcmp(lobj,rvs)); |
501 | } |
502 | |
137d6fc0 |
503 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
504 | } |
505 | |
506 | PUTBACK; |
507 | return; |
508 | } |
439cb1c4 |
509 | } |
510 | |
511 | XS(XS_version_boolean) |
512 | { |
41be1fbd |
513 | dXSARGS; |
514 | if (items < 1) |
515 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); |
516 | SP -= items; |
517 | { |
abb2c242 |
518 | SV * lobj = Nullsv; |
41be1fbd |
519 | |
520 | if (sv_derived_from(ST(0), "version")) { |
6867be6d |
521 | /* XXX If tmp serves a purpose, explain it. */ |
41be1fbd |
522 | SV *tmp = SvRV(ST(0)); |
523 | lobj = tmp; |
524 | } |
525 | else |
526 | Perl_croak(aTHX_ "lobj is not of type version"); |
527 | |
528 | { |
529 | SV *rs; |
530 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); |
137d6fc0 |
531 | PUSHs(sv_2mortal(rs)); |
41be1fbd |
532 | } |
533 | |
534 | PUTBACK; |
535 | return; |
536 | } |
439cb1c4 |
537 | } |
538 | |
539 | XS(XS_version_noop) |
540 | { |
2dfd8427 |
541 | dXSARGS; |
542 | if (items < 1) |
543 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); |
544 | if (sv_derived_from(ST(0), "version")) |
545 | Perl_croak(aTHX_ "operation not supported with version object"); |
546 | else |
547 | Perl_croak(aTHX_ "lobj is not of type version"); |
548 | #ifndef HASATTRIBUTE_NORETURN |
549 | XSRETURN_EMPTY; |
550 | #endif |
439cb1c4 |
551 | } |
552 | |
c8d69e4a |
553 | XS(XS_version_is_alpha) |
554 | { |
555 | dXSARGS; |
556 | if (items != 1) |
557 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); |
558 | SP -= items; |
559 | { |
abb2c242 |
560 | SV * lobj = Nullsv; |
c8d69e4a |
561 | |
562 | if (sv_derived_from(ST(0), "version")) { |
6867be6d |
563 | /* XXX If tmp serves a purpose, explain it. */ |
c8d69e4a |
564 | SV *tmp = SvRV(ST(0)); |
565 | lobj = tmp; |
566 | } |
567 | else |
568 | Perl_croak(aTHX_ "lobj is not of type version"); |
569 | { |
6867be6d |
570 | const I32 len = av_len((AV *)lobj); |
571 | const I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); |
c8d69e4a |
572 | if ( digit < 0 ) |
573 | XSRETURN_YES; |
574 | else |
575 | XSRETURN_NO; |
576 | } |
577 | PUTBACK; |
578 | return; |
579 | } |
580 | } |
581 | |
137d6fc0 |
582 | XS(XS_version_qv) |
583 | { |
584 | dXSARGS; |
585 | if (items != 1) |
586 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); |
587 | SP -= items; |
588 | { |
589 | SV * ver = ST(0); |
590 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ |
591 | { |
592 | SV *vs = sv_newmortal(); |
593 | char *version; |
594 | if ( SvNOK(ver) ) /* may get too much accuracy */ |
595 | { |
596 | char tbuf[64]; |
597 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); |
598 | version = savepv(tbuf); |
599 | } |
600 | else |
601 | { |
2e0de35c |
602 | version = savesvpv(ver); |
137d6fc0 |
603 | } |
604 | (void)scan_version(version,vs,TRUE); |
605 | Safefree(version); |
606 | |
607 | PUSHs(vs); |
608 | } |
609 | else |
610 | { |
611 | PUSHs(sv_2mortal(new_version(ver))); |
612 | } |
613 | |
614 | PUTBACK; |
615 | return; |
616 | } |
617 | } |
618 | |
8800c35a |
619 | XS(XS_utf8_is_utf8) |
620 | { |
41be1fbd |
621 | dXSARGS; |
622 | if (items != 1) |
623 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); |
624 | { |
6867be6d |
625 | const SV *sv = ST(0); |
41be1fbd |
626 | { |
627 | if (SvUTF8(sv)) |
628 | XSRETURN_YES; |
629 | else |
630 | XSRETURN_NO; |
631 | } |
632 | } |
633 | XSRETURN_EMPTY; |
8800c35a |
634 | } |
635 | |
1b026014 |
636 | XS(XS_utf8_valid) |
637 | { |
41be1fbd |
638 | dXSARGS; |
639 | if (items != 1) |
640 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); |
641 | { |
642 | SV * sv = ST(0); |
643 | { |
644 | STRLEN len; |
e62f0680 |
645 | const char *s = SvPV_const(sv,len); |
6867be6d |
646 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) |
41be1fbd |
647 | XSRETURN_YES; |
648 | else |
649 | XSRETURN_NO; |
650 | } |
651 | } |
652 | XSRETURN_EMPTY; |
1b026014 |
653 | } |
654 | |
655 | XS(XS_utf8_encode) |
656 | { |
657 | dXSARGS; |
658 | if (items != 1) |
659 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); |
660 | { |
661 | SV * sv = ST(0); |
662 | |
663 | sv_utf8_encode(sv); |
664 | } |
665 | XSRETURN_EMPTY; |
666 | } |
667 | |
668 | XS(XS_utf8_decode) |
669 | { |
670 | dXSARGS; |
671 | if (items != 1) |
672 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); |
673 | { |
674 | SV * sv = ST(0); |
6867be6d |
675 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 |
676 | ST(0) = boolSV(RETVAL); |
677 | sv_2mortal(ST(0)); |
678 | } |
679 | XSRETURN(1); |
680 | } |
681 | |
682 | XS(XS_utf8_upgrade) |
683 | { |
684 | dXSARGS; |
685 | if (items != 1) |
686 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); |
687 | { |
688 | SV * sv = ST(0); |
689 | STRLEN RETVAL; |
690 | dXSTARG; |
691 | |
692 | RETVAL = sv_utf8_upgrade(sv); |
693 | XSprePUSH; PUSHi((IV)RETVAL); |
694 | } |
695 | XSRETURN(1); |
696 | } |
697 | |
698 | XS(XS_utf8_downgrade) |
699 | { |
700 | dXSARGS; |
701 | if (items < 1 || items > 2) |
702 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); |
703 | { |
704 | SV * sv = ST(0); |
6867be6d |
705 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
706 | const bool RETVAL = sv_utf8_downgrade(sv, failok); |
1b026014 |
707 | |
1b026014 |
708 | ST(0) = boolSV(RETVAL); |
709 | sv_2mortal(ST(0)); |
710 | } |
711 | XSRETURN(1); |
712 | } |
713 | |
714 | XS(XS_utf8_native_to_unicode) |
715 | { |
716 | dXSARGS; |
6867be6d |
717 | const UV uv = SvUV(ST(0)); |
b7953727 |
718 | |
719 | if (items > 1) |
720 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); |
721 | |
1b026014 |
722 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
723 | XSRETURN(1); |
724 | } |
725 | |
726 | XS(XS_utf8_unicode_to_native) |
727 | { |
728 | dXSARGS; |
6867be6d |
729 | const UV uv = SvUV(ST(0)); |
b7953727 |
730 | |
731 | if (items > 1) |
732 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); |
733 | |
1b026014 |
734 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
735 | XSRETURN(1); |
736 | } |
737 | |
14a976d6 |
738 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 |
739 | { |
740 | dXSARGS; |
741 | SV *sv = SvRV(ST(0)); |
6867be6d |
742 | |
29569577 |
743 | if (items == 1) { |
744 | if (SvREADONLY(sv)) |
745 | XSRETURN_YES; |
746 | else |
747 | XSRETURN_NO; |
748 | } |
749 | else if (items == 2) { |
750 | if (SvTRUE(ST(1))) { |
751 | SvREADONLY_on(sv); |
752 | XSRETURN_YES; |
753 | } |
754 | else { |
14a976d6 |
755 | /* I hope you really know what you are doing. */ |
29569577 |
756 | SvREADONLY_off(sv); |
757 | XSRETURN_NO; |
758 | } |
759 | } |
14a976d6 |
760 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
761 | } |
762 | |
14a976d6 |
763 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 |
764 | { |
765 | dXSARGS; |
766 | SV *sv = SvRV(ST(0)); |
6867be6d |
767 | |
29569577 |
768 | if (items == 1) |
14a976d6 |
769 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 |
770 | else if (items == 2) { |
14a976d6 |
771 | /* I hope you really know what you are doing. */ |
29569577 |
772 | SvREFCNT(sv) = SvIV(ST(1)); |
773 | XSRETURN_IV(SvREFCNT(sv)); |
774 | } |
14a976d6 |
775 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 |
776 | } |
777 | |
f044d0d1 |
778 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f |
779 | { |
780 | dXSARGS; |
781 | HV *hv = (HV *) SvRV(ST(0)); |
6867be6d |
782 | |
3540d4ce |
783 | if (items != 1) |
784 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); |
785 | hv_clear_placeholders(hv); |
dfd4ef2f |
786 | XSRETURN(0); |
787 | } |
39f7a870 |
788 | |
39cff0d9 |
789 | XS(XS_Regexp_DESTROY) |
790 | { |
39cff0d9 |
791 | } |
792 | |
39f7a870 |
793 | XS(XS_PerlIO_get_layers) |
794 | { |
795 | dXSARGS; |
796 | if (items < 1 || items % 2 == 0) |
797 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); |
5fef3b4a |
798 | #ifdef USE_PERLIO |
39f7a870 |
799 | { |
800 | SV * sv; |
801 | GV * gv; |
802 | IO * io; |
803 | bool input = TRUE; |
804 | bool details = FALSE; |
805 | |
806 | if (items > 1) { |
39f7a870 |
807 | SV **svp; |
808 | |
809 | for (svp = MARK + 2; svp <= SP; svp += 2) { |
810 | SV **varp = svp; |
811 | SV **valp = svp + 1; |
812 | STRLEN klen; |
e62f0680 |
813 | const char *key = SvPV_const(*varp, klen); |
39f7a870 |
814 | |
815 | switch (*key) { |
816 | case 'i': |
817 | if (klen == 5 && memEQ(key, "input", 5)) { |
818 | input = SvTRUE(*valp); |
819 | break; |
820 | } |
821 | goto fail; |
822 | case 'o': |
823 | if (klen == 6 && memEQ(key, "output", 6)) { |
824 | input = !SvTRUE(*valp); |
825 | break; |
826 | } |
827 | goto fail; |
828 | case 'd': |
829 | if (klen == 7 && memEQ(key, "details", 7)) { |
830 | details = SvTRUE(*valp); |
831 | break; |
832 | } |
833 | goto fail; |
834 | default: |
835 | fail: |
836 | Perl_croak(aTHX_ |
837 | "get_layers: unknown argument '%s'", |
838 | key); |
839 | } |
840 | } |
841 | |
842 | SP -= (items - 1); |
843 | } |
844 | |
845 | sv = POPs; |
846 | gv = (GV*)sv; |
847 | |
848 | if (!isGV(sv)) { |
849 | if (SvROK(sv) && isGV(SvRV(sv))) |
850 | gv = (GV*)SvRV(sv); |
851 | else |
7a5fd60d |
852 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
39f7a870 |
853 | } |
854 | |
855 | if (gv && (io = GvIO(gv))) { |
856 | dTARGET; |
857 | AV* av = PerlIO_get_layers(aTHX_ input ? |
858 | IoIFP(io) : IoOFP(io)); |
859 | I32 i; |
860 | I32 last = av_len(av); |
861 | I32 nitem = 0; |
862 | |
863 | for (i = last; i >= 0; i -= 3) { |
864 | SV **namsvp; |
865 | SV **argsvp; |
866 | SV **flgsvp; |
867 | bool namok, argok, flgok; |
868 | |
869 | namsvp = av_fetch(av, i - 2, FALSE); |
870 | argsvp = av_fetch(av, i - 1, FALSE); |
871 | flgsvp = av_fetch(av, i, FALSE); |
872 | |
873 | namok = namsvp && *namsvp && SvPOK(*namsvp); |
874 | argok = argsvp && *argsvp && SvPOK(*argsvp); |
875 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); |
876 | |
877 | if (details) { |
878 | XPUSHs(namok ? |
95a20fc0 |
879 | newSVpv(SvPVX_const(*namsvp), 0) : &PL_sv_undef); |
39f7a870 |
880 | XPUSHs(argok ? |
95a20fc0 |
881 | newSVpv(SvPVX_const(*argsvp), 0) : &PL_sv_undef); |
39f7a870 |
882 | if (flgok) |
883 | XPUSHi(SvIVX(*flgsvp)); |
884 | else |
885 | XPUSHs(&PL_sv_undef); |
886 | nitem += 3; |
887 | } |
888 | else { |
889 | if (namok && argok) |
890 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", |
891 | *namsvp, *argsvp)); |
892 | else if (namok) |
893 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); |
894 | else |
895 | XPUSHs(&PL_sv_undef); |
896 | nitem++; |
897 | if (flgok) { |
898 | IV flags = SvIVX(*flgsvp); |
899 | |
900 | if (flags & PERLIO_F_UTF8) { |
901 | XPUSHs(newSVpvn("utf8", 4)); |
902 | nitem++; |
903 | } |
904 | } |
905 | } |
906 | } |
907 | |
908 | SvREFCNT_dec(av); |
909 | |
910 | XSRETURN(nitem); |
911 | } |
912 | } |
5fef3b4a |
913 | #endif |
39f7a870 |
914 | |
915 | XSRETURN(0); |
916 | } |
917 | |
9a7034eb |
918 | XS(XS_Internals_hash_seed) |
c910b28a |
919 | { |
c85d3f85 |
920 | /* Using dXSARGS would also have dITEM and dSP, |
921 | * which define 2 unused local variables. */ |
557b887a |
922 | dAXMARK; |
2dfd8427 |
923 | (void)mark; |
81eaca17 |
924 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a |
925 | } |
926 | |
008fb0c0 |
927 | XS(XS_Internals_rehash_seed) |
8e90d776 |
928 | { |
929 | /* Using dXSARGS would also have dITEM and dSP, |
930 | * which define 2 unused local variables. */ |
557b887a |
931 | dAXMARK; |
2dfd8427 |
932 | (void)mark; |
008fb0c0 |
933 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 |
934 | } |
935 | |
05619474 |
936 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
937 | { |
938 | dXSARGS; |
939 | if (SvROK(ST(0))) { |
6867be6d |
940 | const HV *hv = (HV *) SvRV(ST(0)); |
05619474 |
941 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
942 | if (HvREHASH(hv)) |
943 | XSRETURN_YES; |
944 | else |
945 | XSRETURN_NO; |
946 | } |
947 | } |
948 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); |
949 | } |
241d1a3b |
950 | |
951 | /* |
952 | * Local variables: |
953 | * c-indentation-style: bsd |
954 | * c-basic-offset: 4 |
955 | * indent-tabs-mode: t |
956 | * End: |
957 | * |
37442d52 |
958 | * ex: set ts=8 sts=4 sw=4 noet: |
959 | */ |