Commit | Line | Data |
---|---|---|
d6376244 JH |
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 JH |
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 AT |
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 DM |
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 JH |
25 | #ifdef USE_PERLIO |
26 | #include "perliol.h" /* For the PERLIO_F_XXX */ | |
27 | #endif | |
28 | ||
6d4a7be2 PP |
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 MS |
35 | S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash, |
36 | int len, int level) | |
6d4a7be2 PP |
37 | { |
38 | AV* av; | |
39 | GV* gv; | |
40 | GV** gvp; | |
41 | HV* hv = Nullhv; | |
46e4b22b | 42 | SV* subgen = Nullsv; |
6d4a7be2 | 43 | |
301daebc MS |
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 DM |
52 | if (strEQ(name, "UNIVERSAL")) |
53 | return &PL_sv_yes; | |
54 | ||
6d4a7be2 | 55 | if (level > 100) |
46e4b22b GS |
56 | Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", |
57 | HvNAME(stash)); | |
6d4a7be2 PP |
58 | |
59 | gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE); | |
60 | ||
46e4b22b GS |
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 GS |
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 PP |
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 PP |
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 GS |
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 NIS |
101 | /* NOTE: No support for tied ISA */ |
102 | I32 items = AvFILLp(av) + 1; | |
6d4a7be2 PP |
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 NC |
109 | "Can't locate package %"SVf" for @%s::ISA", |
110 | sv, HvNAME(stash)); | |
6d4a7be2 PP |
111 | continue; |
112 | } | |
301daebc MS |
113 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
114 | len, level + 1)) { | |
3280af22 NIS |
115 | (void)hv_store(hv,name,len,&PL_sv_yes,0); |
116 | return &PL_sv_yes; | |
6d4a7be2 PP |
117 | } |
118 | } | |
3280af22 | 119 | (void)hv_store(hv,name,len,&PL_sv_no,0); |
6d4a7be2 PP |
120 | } |
121 | } | |
a1d407e8 | 122 | return &PL_sv_no; |
6d4a7be2 PP |
123 | } |
124 | ||
954c1994 | 125 | /* |
ccfc67b7 JH |
126 | =head1 SV Manipulation Functions |
127 | ||
954c1994 GS |
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 | { |
a3b680e6 AL |
140 | const char *type = Nullch; |
141 | HV *stash = Nullhv; | |
301daebc | 142 | HV *name_stash; |
46e4b22b | 143 | |
55497cff PP |
144 | if (SvGMAGICAL(sv)) |
145 | mg_get(sv) ; | |
146 | ||
147 | if (SvROK(sv)) { | |
148 | sv = SvRV(sv); | |
149 | type = sv_reftype(sv,0); | |
46e4b22b | 150 | if (SvOBJECT(sv)) |
55497cff PP |
151 | stash = SvSTASH(sv); |
152 | } | |
153 | else { | |
154 | stash = gv_stashsv(sv, FALSE); | |
155 | } | |
46e4b22b | 156 | |
301daebc MS |
157 | name_stash = gv_stashpv(name, FALSE); |
158 | ||
55497cff | 159 | return (type && strEQ(type,name)) || |
301daebc MS |
160 | (stash && isa_lookup(stash, name, name_stash, strlen(name), 0) |
161 | == &PL_sv_yes) | |
55497cff PP |
162 | ? TRUE |
163 | : FALSE ; | |
55497cff PP |
164 | } |
165 | ||
1b026014 NIS |
166 | #include "XSUB.h" |
167 | ||
27da23d5 JH |
168 | PERL_XS_EXPORT_C void XS_UNIVERSAL_isa(pTHX_ CV *cv); |
169 | PERL_XS_EXPORT_C void XS_UNIVERSAL_can(pTHX_ CV *cv); | |
170 | PERL_XS_EXPORT_C void XS_UNIVERSAL_VERSION(pTHX_ CV *cv); | |
439cb1c4 JP |
171 | XS(XS_version_new); |
172 | XS(XS_version_stringify); | |
173 | XS(XS_version_numify); | |
174 | XS(XS_version_vcmp); | |
175 | XS(XS_version_boolean); | |
176 | XS(XS_version_noop); | |
c8d69e4a | 177 | XS(XS_version_is_alpha); |
137d6fc0 | 178 | XS(XS_version_qv); |
8800c35a | 179 | XS(XS_utf8_is_utf8); |
1b026014 NIS |
180 | XS(XS_utf8_valid); |
181 | XS(XS_utf8_encode); | |
182 | XS(XS_utf8_decode); | |
183 | XS(XS_utf8_upgrade); | |
184 | XS(XS_utf8_downgrade); | |
185 | XS(XS_utf8_unicode_to_native); | |
186 | XS(XS_utf8_native_to_unicode); | |
29569577 JH |
187 | XS(XS_Internals_SvREADONLY); |
188 | XS(XS_Internals_SvREFCNT); | |
f044d0d1 | 189 | XS(XS_Internals_hv_clear_placehold); |
39f7a870 | 190 | XS(XS_PerlIO_get_layers); |
39cff0d9 | 191 | XS(XS_Regexp_DESTROY); |
9a7034eb | 192 | XS(XS_Internals_hash_seed); |
008fb0c0 | 193 | XS(XS_Internals_rehash_seed); |
05619474 | 194 | XS(XS_Internals_HvREHASH); |
0cb96387 GS |
195 | |
196 | void | |
197 | Perl_boot_core_UNIVERSAL(pTHX) | |
198 | { | |
e1ec3a88 | 199 | const char file[] = __FILE__; |
0cb96387 GS |
200 | |
201 | newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file); | |
202 | newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file); | |
203 | newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file); | |
439cb1c4 | 204 | { |
ad63d80f JP |
205 | /* register the overloading (type 'A') magic */ |
206 | PL_amagic_generation++; | |
439cb1c4 | 207 | /* Make it findable via fetchmethod */ |
be2ebcad | 208 | newXS("version::()", XS_version_noop, file); |
439cb1c4 JP |
209 | newXS("version::new", XS_version_new, file); |
210 | newXS("version::(\"\"", XS_version_stringify, file); | |
211 | newXS("version::stringify", XS_version_stringify, file); | |
212 | newXS("version::(0+", XS_version_numify, file); | |
213 | newXS("version::numify", XS_version_numify, file); | |
214 | newXS("version::(cmp", XS_version_vcmp, file); | |
215 | newXS("version::(<=>", XS_version_vcmp, file); | |
216 | newXS("version::vcmp", XS_version_vcmp, file); | |
217 | newXS("version::(bool", XS_version_boolean, file); | |
218 | newXS("version::boolean", XS_version_boolean, file); | |
219 | newXS("version::(nomethod", XS_version_noop, file); | |
220 | newXS("version::noop", XS_version_noop, file); | |
c8d69e4a | 221 | newXS("version::is_alpha", XS_version_is_alpha, file); |
137d6fc0 | 222 | newXS("version::qv", XS_version_qv, file); |
439cb1c4 | 223 | } |
8800c35a | 224 | newXS("utf8::is_utf8", XS_utf8_is_utf8, file); |
1b026014 NIS |
225 | newXS("utf8::valid", XS_utf8_valid, file); |
226 | newXS("utf8::encode", XS_utf8_encode, file); | |
227 | newXS("utf8::decode", XS_utf8_decode, file); | |
228 | newXS("utf8::upgrade", XS_utf8_upgrade, file); | |
229 | newXS("utf8::downgrade", XS_utf8_downgrade, file); | |
230 | newXS("utf8::native_to_unicode", XS_utf8_native_to_unicode, file); | |
231 | newXS("utf8::unicode_to_native", XS_utf8_unicode_to_native, file); | |
29569577 JH |
232 | newXSproto("Internals::SvREADONLY",XS_Internals_SvREADONLY, file, "\\[$%@];$"); |
233 | newXSproto("Internals::SvREFCNT",XS_Internals_SvREFCNT, file, "\\[$%@];$"); | |
dfd4ef2f | 234 | newXSproto("Internals::hv_clear_placeholders", |
f044d0d1 | 235 | XS_Internals_hv_clear_placehold, file, "\\%"); |
9d569fce JH |
236 | newXSproto("PerlIO::get_layers", |
237 | XS_PerlIO_get_layers, file, "*;@"); | |
39cff0d9 | 238 | newXS("Regexp::DESTROY", XS_Regexp_DESTROY, file); |
9a7034eb | 239 | newXSproto("Internals::hash_seed",XS_Internals_hash_seed, file, ""); |
008fb0c0 | 240 | newXSproto("Internals::rehash_seed",XS_Internals_rehash_seed, file, ""); |
05619474 | 241 | newXSproto("Internals::HvREHASH", XS_Internals_HvREHASH, file, "\\%"); |
0cb96387 GS |
242 | } |
243 | ||
55497cff | 244 | |
6d4a7be2 PP |
245 | XS(XS_UNIVERSAL_isa) |
246 | { | |
247 | dXSARGS; | |
55497cff | 248 | SV *sv; |
6867be6d | 249 | const char *name; |
2d8e6c8d | 250 | STRLEN n_a; |
6d4a7be2 PP |
251 | |
252 | if (items != 2) | |
cea2e8a9 | 253 | Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)"); |
6d4a7be2 PP |
254 | |
255 | sv = ST(0); | |
f8f70380 | 256 | |
d3f7f2b2 GS |
257 | if (SvGMAGICAL(sv)) |
258 | mg_get(sv); | |
259 | ||
253ecd6d RGS |
260 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
261 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
262 | XSRETURN_UNDEF; |
263 | ||
6867be6d | 264 | name = (const char *)SvPV(ST(1),n_a); |
6d4a7be2 | 265 | |
54310121 | 266 | ST(0) = boolSV(sv_derived_from(sv, name)); |
6d4a7be2 PP |
267 | XSRETURN(1); |
268 | } | |
269 | ||
6d4a7be2 PP |
270 | XS(XS_UNIVERSAL_can) |
271 | { | |
272 | dXSARGS; | |
273 | SV *sv; | |
6867be6d | 274 | const char *name; |
6d4a7be2 | 275 | SV *rv; |
6f08146e | 276 | HV *pkg = NULL; |
2d8e6c8d | 277 | STRLEN n_a; |
6d4a7be2 PP |
278 | |
279 | if (items != 2) | |
cea2e8a9 | 280 | Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)"); |
6d4a7be2 PP |
281 | |
282 | sv = ST(0); | |
f8f70380 | 283 | |
d3f7f2b2 GS |
284 | if (SvGMAGICAL(sv)) |
285 | mg_get(sv); | |
286 | ||
253ecd6d RGS |
287 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
288 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
289 | XSRETURN_UNDEF; |
290 | ||
6867be6d | 291 | name = (const char *)SvPV(ST(1),n_a); |
3280af22 | 292 | rv = &PL_sv_undef; |
6d4a7be2 | 293 | |
46e4b22b | 294 | if (SvROK(sv)) { |
6f08146e | 295 | sv = (SV*)SvRV(sv); |
46e4b22b | 296 | if (SvOBJECT(sv)) |
6f08146e NIS |
297 | pkg = SvSTASH(sv); |
298 | } | |
299 | else { | |
300 | pkg = gv_stashsv(sv, FALSE); | |
301 | } | |
302 | ||
303 | if (pkg) { | |
dc848c6f PP |
304 | GV *gv = gv_fetchmethod_autoload(pkg, name, FALSE); |
305 | if (gv && isGV(gv)) | |
306 | rv = sv_2mortal(newRV((SV*)GvCV(gv))); | |
6d4a7be2 PP |
307 | } |
308 | ||
309 | ST(0) = rv; | |
310 | XSRETURN(1); | |
311 | } | |
312 | ||
6d4a7be2 PP |
313 | XS(XS_UNIVERSAL_VERSION) |
314 | { | |
315 | dXSARGS; | |
316 | HV *pkg; | |
317 | GV **gvp; | |
318 | GV *gv; | |
319 | SV *sv; | |
e1ec3a88 | 320 | const char *undef; |
6d4a7be2 | 321 | |
1571675a | 322 | if (SvROK(ST(0))) { |
6d4a7be2 | 323 | sv = (SV*)SvRV(ST(0)); |
1571675a | 324 | if (!SvOBJECT(sv)) |
cea2e8a9 | 325 | Perl_croak(aTHX_ "Cannot find version of an unblessed reference"); |
6d4a7be2 PP |
326 | pkg = SvSTASH(sv); |
327 | } | |
328 | else { | |
329 | pkg = gv_stashsv(ST(0), FALSE); | |
330 | } | |
331 | ||
332 | gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**); | |
333 | ||
d4bea2fb | 334 | if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) { |
6d4a7be2 PP |
335 | SV *nsv = sv_newmortal(); |
336 | sv_setsv(nsv, sv); | |
337 | sv = nsv; | |
137d6fc0 JP |
338 | if ( !sv_derived_from(sv, "version")) |
339 | upg_version(sv); | |
6d4a7be2 PP |
340 | undef = Nullch; |
341 | } | |
342 | else { | |
3280af22 | 343 | sv = (SV*)&PL_sv_undef; |
6d4a7be2 PP |
344 | undef = "(undef)"; |
345 | } | |
346 | ||
1571675a | 347 | if (items > 1) { |
1571675a GS |
348 | SV *req = ST(1); |
349 | ||
62658f4d | 350 | if (undef) { |
a3b680e6 AL |
351 | if (pkg) |
352 | Perl_croak(aTHX_ | |
62658f4d PM |
353 | "%s does not define $%s::VERSION--version check failed", |
354 | HvNAME(pkg), HvNAME(pkg)); | |
a3b680e6 AL |
355 | else { |
356 | STRLEN n_a; | |
357 | Perl_croak(aTHX_ | |
358 | "%s defines neither package nor VERSION--version check failed", | |
359 | SvPVx(ST(0),n_a) ); | |
62658f4d PM |
360 | } |
361 | } | |
ad63d80f | 362 | |
137d6fc0 JP |
363 | if ( !sv_derived_from(req, "version")) { |
364 | /* req may very well be R/O, so create a new object */ | |
365 | SV *nsv = sv_newmortal(); | |
366 | sv_setsv(nsv, req); | |
367 | req = nsv; | |
368 | upg_version(req); | |
369 | } | |
1571675a | 370 | |
137d6fc0 | 371 | if ( vcmp( req, sv ) > 0 ) |
b9381830 JP |
372 | Perl_croak(aTHX_ "%s version %"SVf" (%"SVf") required--" |
373 | "this is only version %"SVf" (%"SVf")", HvNAME(pkg), | |
374 | vnumify(req),vnormal(req),vnumify(sv),vnormal(sv)); | |
2d8e6c8d | 375 | } |
6d4a7be2 | 376 | |
2b140d5b | 377 | if ( SvOK(sv) && sv_derived_from(sv, "version") ) { |
b38a9dc5 | 378 | ST(0) = vnumify(sv); |
13f8f398 JP |
379 | } else { |
380 | ST(0) = sv; | |
b38a9dc5 | 381 | } |
6d4a7be2 PP |
382 | |
383 | XSRETURN(1); | |
384 | } | |
385 | ||
439cb1c4 JP |
386 | XS(XS_version_new) |
387 | { | |
388 | dXSARGS; | |
129318bd | 389 | if (items > 3) |
439cb1c4 JP |
390 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
391 | SP -= items; | |
392 | { | |
0723351e | 393 | const char *classname = SvPV_nolen(ST(0)); |
137d6fc0 JP |
394 | SV *vs = ST(1); |
395 | SV *rv; | |
129318bd JP |
396 | if (items == 3 ) |
397 | { | |
137d6fc0 JP |
398 | vs = sv_newmortal(); |
399 | Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen(ST(2))); | |
129318bd | 400 | } |
439cb1c4 | 401 | |
137d6fc0 | 402 | rv = new_version(vs); |
0723351e NC |
403 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
404 | sv_bless(rv, gv_stashpv(classname,TRUE)); | |
137d6fc0 JP |
405 | |
406 | PUSHs(sv_2mortal(rv)); | |
439cb1c4 JP |
407 | PUTBACK; |
408 | return; | |
409 | } | |
410 | } | |
411 | ||
412 | XS(XS_version_stringify) | |
413 | { | |
41be1fbd JH |
414 | dXSARGS; |
415 | if (items < 1) | |
416 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
417 | SP -= items; | |
418 | { | |
abb2c242 | 419 | SV * lobj = Nullsv; |
41be1fbd JH |
420 | |
421 | if (sv_derived_from(ST(0), "version")) { | |
422 | SV *tmp = SvRV(ST(0)); | |
423 | lobj = tmp; | |
424 | } | |
425 | else | |
426 | Perl_croak(aTHX_ "lobj is not of type version"); | |
427 | ||
137d6fc0 | 428 | PUSHs(sv_2mortal(vstringify(lobj))); |
41be1fbd JH |
429 | |
430 | PUTBACK; | |
431 | return; | |
432 | } | |
439cb1c4 JP |
433 | } |
434 | ||
435 | XS(XS_version_numify) | |
436 | { | |
41be1fbd JH |
437 | dXSARGS; |
438 | if (items < 1) | |
439 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
440 | SP -= items; | |
441 | { | |
abb2c242 | 442 | SV * lobj = Nullsv; |
41be1fbd JH |
443 | |
444 | if (sv_derived_from(ST(0), "version")) { | |
445 | SV *tmp = SvRV(ST(0)); | |
446 | lobj = tmp; | |
447 | } | |
448 | else | |
449 | Perl_croak(aTHX_ "lobj is not of type version"); | |
450 | ||
137d6fc0 | 451 | PUSHs(sv_2mortal(vnumify(lobj))); |
41be1fbd JH |
452 | |
453 | PUTBACK; | |
454 | return; | |
455 | } | |
439cb1c4 JP |
456 | } |
457 | ||
458 | XS(XS_version_vcmp) | |
459 | { | |
41be1fbd JH |
460 | dXSARGS; |
461 | if (items < 1) | |
462 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
463 | SP -= items; | |
464 | { | |
abb2c242 | 465 | SV * lobj = Nullsv; |
41be1fbd JH |
466 | |
467 | if (sv_derived_from(ST(0), "version")) { | |
468 | SV *tmp = SvRV(ST(0)); | |
469 | lobj = tmp; | |
470 | } | |
471 | else | |
472 | Perl_croak(aTHX_ "lobj is not of type version"); | |
473 | ||
474 | { | |
475 | SV *rs; | |
476 | SV *rvs; | |
477 | SV * robj = ST(1); | |
478 | IV swap = (IV)SvIV(ST(2)); | |
479 | ||
480 | if ( ! sv_derived_from(robj, "version") ) | |
481 | { | |
482 | robj = new_version(robj); | |
483 | } | |
484 | rvs = SvRV(robj); | |
485 | ||
486 | if ( swap ) | |
487 | { | |
488 | rs = newSViv(vcmp(rvs,lobj)); | |
489 | } | |
490 | else | |
491 | { | |
492 | rs = newSViv(vcmp(lobj,rvs)); | |
493 | } | |
494 | ||
137d6fc0 | 495 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
496 | } |
497 | ||
498 | PUTBACK; | |
499 | return; | |
500 | } | |
439cb1c4 JP |
501 | } |
502 | ||
503 | XS(XS_version_boolean) | |
504 | { | |
41be1fbd JH |
505 | dXSARGS; |
506 | if (items < 1) | |
507 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
508 | SP -= items; | |
509 | { | |
abb2c242 | 510 | SV * lobj = Nullsv; |
41be1fbd JH |
511 | |
512 | if (sv_derived_from(ST(0), "version")) { | |
6867be6d | 513 | /* XXX If tmp serves a purpose, explain it. */ |
41be1fbd JH |
514 | SV *tmp = SvRV(ST(0)); |
515 | lobj = tmp; | |
516 | } | |
517 | else | |
518 | Perl_croak(aTHX_ "lobj is not of type version"); | |
519 | ||
520 | { | |
521 | SV *rs; | |
522 | rs = newSViv( vcmp(lobj,new_version(newSVpvn("0",1))) ); | |
137d6fc0 | 523 | PUSHs(sv_2mortal(rs)); |
41be1fbd JH |
524 | } |
525 | ||
526 | PUTBACK; | |
527 | return; | |
528 | } | |
439cb1c4 JP |
529 | } |
530 | ||
531 | XS(XS_version_noop) | |
532 | { | |
41be1fbd JH |
533 | dXSARGS; |
534 | if (items < 1) | |
535 | Perl_croak(aTHX_ "Usage: version::noop(lobj, ...)"); | |
536 | { | |
abb2c242 | 537 | SV * lobj = Nullsv; |
41be1fbd JH |
538 | |
539 | if (sv_derived_from(ST(0), "version")) { | |
540 | SV *tmp = SvRV(ST(0)); | |
541 | lobj = tmp; | |
542 | } | |
543 | else | |
544 | Perl_croak(aTHX_ "lobj is not of type version"); | |
545 | ||
546 | { | |
547 | Perl_croak(aTHX_ "operation not supported with version object"); | |
548 | } | |
549 | ||
550 | } | |
551 | XSRETURN_EMPTY; | |
439cb1c4 JP |
552 | } |
553 | ||
c8d69e4a JP |
554 | XS(XS_version_is_alpha) |
555 | { | |
556 | dXSARGS; | |
557 | if (items != 1) | |
558 | Perl_croak(aTHX_ "Usage: version::is_alpha(lobj)"); | |
559 | SP -= items; | |
560 | { | |
abb2c242 | 561 | SV * lobj = Nullsv; |
c8d69e4a JP |
562 | |
563 | if (sv_derived_from(ST(0), "version")) { | |
6867be6d | 564 | /* XXX If tmp serves a purpose, explain it. */ |
c8d69e4a JP |
565 | SV *tmp = SvRV(ST(0)); |
566 | lobj = tmp; | |
567 | } | |
568 | else | |
569 | Perl_croak(aTHX_ "lobj is not of type version"); | |
570 | { | |
6867be6d AL |
571 | const I32 len = av_len((AV *)lobj); |
572 | const I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); | |
c8d69e4a JP |
573 | if ( digit < 0 ) |
574 | XSRETURN_YES; | |
575 | else | |
576 | XSRETURN_NO; | |
577 | } | |
578 | PUTBACK; | |
579 | return; | |
580 | } | |
581 | } | |
582 | ||
137d6fc0 JP |
583 | XS(XS_version_qv) |
584 | { | |
585 | dXSARGS; | |
586 | if (items != 1) | |
587 | Perl_croak(aTHX_ "Usage: version::qv(ver)"); | |
588 | SP -= items; | |
589 | { | |
590 | SV * ver = ST(0); | |
591 | if ( !SvVOK(ver) ) /* only need to do with if not already v-string */ | |
592 | { | |
593 | SV *vs = sv_newmortal(); | |
594 | char *version; | |
595 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
596 | { | |
597 | char tbuf[64]; | |
598 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); | |
599 | version = savepv(tbuf); | |
600 | } | |
601 | else | |
602 | { | |
2e0de35c | 603 | version = savesvpv(ver); |
137d6fc0 JP |
604 | } |
605 | (void)scan_version(version,vs,TRUE); | |
606 | Safefree(version); | |
607 | ||
608 | PUSHs(vs); | |
609 | } | |
610 | else | |
611 | { | |
612 | PUSHs(sv_2mortal(new_version(ver))); | |
613 | } | |
614 | ||
615 | PUTBACK; | |
616 | return; | |
617 | } | |
618 | } | |
619 | ||
8800c35a JH |
620 | XS(XS_utf8_is_utf8) |
621 | { | |
41be1fbd JH |
622 | dXSARGS; |
623 | if (items != 1) | |
624 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
625 | { | |
6867be6d | 626 | const SV *sv = ST(0); |
41be1fbd JH |
627 | { |
628 | if (SvUTF8(sv)) | |
629 | XSRETURN_YES; | |
630 | else | |
631 | XSRETURN_NO; | |
632 | } | |
633 | } | |
634 | XSRETURN_EMPTY; | |
8800c35a JH |
635 | } |
636 | ||
1b026014 NIS |
637 | XS(XS_utf8_valid) |
638 | { | |
41be1fbd JH |
639 | dXSARGS; |
640 | if (items != 1) | |
641 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
642 | { | |
643 | SV * sv = ST(0); | |
644 | { | |
645 | STRLEN len; | |
6867be6d AL |
646 | const char *s = SvPV(sv,len); |
647 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
41be1fbd JH |
648 | XSRETURN_YES; |
649 | else | |
650 | XSRETURN_NO; | |
651 | } | |
652 | } | |
653 | XSRETURN_EMPTY; | |
1b026014 NIS |
654 | } |
655 | ||
656 | XS(XS_utf8_encode) | |
657 | { | |
658 | dXSARGS; | |
659 | if (items != 1) | |
660 | Perl_croak(aTHX_ "Usage: utf8::encode(sv)"); | |
661 | { | |
662 | SV * sv = ST(0); | |
663 | ||
664 | sv_utf8_encode(sv); | |
665 | } | |
666 | XSRETURN_EMPTY; | |
667 | } | |
668 | ||
669 | XS(XS_utf8_decode) | |
670 | { | |
671 | dXSARGS; | |
672 | if (items != 1) | |
673 | Perl_croak(aTHX_ "Usage: utf8::decode(sv)"); | |
674 | { | |
675 | SV * sv = ST(0); | |
6867be6d | 676 | const bool RETVAL = sv_utf8_decode(sv); |
1b026014 NIS |
677 | ST(0) = boolSV(RETVAL); |
678 | sv_2mortal(ST(0)); | |
679 | } | |
680 | XSRETURN(1); | |
681 | } | |
682 | ||
683 | XS(XS_utf8_upgrade) | |
684 | { | |
685 | dXSARGS; | |
686 | if (items != 1) | |
687 | Perl_croak(aTHX_ "Usage: utf8::upgrade(sv)"); | |
688 | { | |
689 | SV * sv = ST(0); | |
690 | STRLEN RETVAL; | |
691 | dXSTARG; | |
692 | ||
693 | RETVAL = sv_utf8_upgrade(sv); | |
694 | XSprePUSH; PUSHi((IV)RETVAL); | |
695 | } | |
696 | XSRETURN(1); | |
697 | } | |
698 | ||
699 | XS(XS_utf8_downgrade) | |
700 | { | |
701 | dXSARGS; | |
702 | if (items < 1 || items > 2) | |
703 | Perl_croak(aTHX_ "Usage: utf8::downgrade(sv, failok=0)"); | |
704 | { | |
705 | SV * sv = ST(0); | |
6867be6d AL |
706 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
707 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 708 | |
1b026014 NIS |
709 | ST(0) = boolSV(RETVAL); |
710 | sv_2mortal(ST(0)); | |
711 | } | |
712 | XSRETURN(1); | |
713 | } | |
714 | ||
715 | XS(XS_utf8_native_to_unicode) | |
716 | { | |
717 | dXSARGS; | |
6867be6d | 718 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
719 | |
720 | if (items > 1) | |
721 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
722 | ||
1b026014 NIS |
723 | ST(0) = sv_2mortal(newSViv(NATIVE_TO_UNI(uv))); |
724 | XSRETURN(1); | |
725 | } | |
726 | ||
727 | XS(XS_utf8_unicode_to_native) | |
728 | { | |
729 | dXSARGS; | |
6867be6d | 730 | const UV uv = SvUV(ST(0)); |
b7953727 JH |
731 | |
732 | if (items > 1) | |
733 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
734 | ||
1b026014 NIS |
735 | ST(0) = sv_2mortal(newSViv(UNI_TO_NATIVE(uv))); |
736 | XSRETURN(1); | |
737 | } | |
738 | ||
14a976d6 | 739 | XS(XS_Internals_SvREADONLY) /* This is dangerous stuff. */ |
29569577 JH |
740 | { |
741 | dXSARGS; | |
742 | SV *sv = SvRV(ST(0)); | |
6867be6d | 743 | |
29569577 JH |
744 | if (items == 1) { |
745 | if (SvREADONLY(sv)) | |
746 | XSRETURN_YES; | |
747 | else | |
748 | XSRETURN_NO; | |
749 | } | |
750 | else if (items == 2) { | |
751 | if (SvTRUE(ST(1))) { | |
752 | SvREADONLY_on(sv); | |
753 | XSRETURN_YES; | |
754 | } | |
755 | else { | |
14a976d6 | 756 | /* I hope you really know what you are doing. */ |
29569577 JH |
757 | SvREADONLY_off(sv); |
758 | XSRETURN_NO; | |
759 | } | |
760 | } | |
14a976d6 | 761 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
762 | } |
763 | ||
14a976d6 | 764 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 JH |
765 | { |
766 | dXSARGS; | |
767 | SV *sv = SvRV(ST(0)); | |
6867be6d | 768 | |
29569577 | 769 | if (items == 1) |
14a976d6 | 770 | XSRETURN_IV(SvREFCNT(sv) - 1); /* Minus the ref created for us. */ |
29569577 | 771 | else if (items == 2) { |
14a976d6 | 772 | /* I hope you really know what you are doing. */ |
29569577 JH |
773 | SvREFCNT(sv) = SvIV(ST(1)); |
774 | XSRETURN_IV(SvREFCNT(sv)); | |
775 | } | |
14a976d6 | 776 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
777 | } |
778 | ||
f044d0d1 | 779 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f NC |
780 | { |
781 | dXSARGS; | |
782 | HV *hv = (HV *) SvRV(ST(0)); | |
6867be6d | 783 | |
3540d4ce AB |
784 | if (items != 1) |
785 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); | |
786 | hv_clear_placeholders(hv); | |
dfd4ef2f NC |
787 | XSRETURN(0); |
788 | } | |
39f7a870 | 789 | |
39cff0d9 AE |
790 | XS(XS_Regexp_DESTROY) |
791 | { | |
39cff0d9 AE |
792 | } |
793 | ||
39f7a870 JH |
794 | XS(XS_PerlIO_get_layers) |
795 | { | |
796 | dXSARGS; | |
797 | if (items < 1 || items % 2 == 0) | |
798 | Perl_croak(aTHX_ "Usage: PerlIO_get_layers(filehandle[,args])"); | |
5fef3b4a | 799 | #ifdef USE_PERLIO |
39f7a870 JH |
800 | { |
801 | SV * sv; | |
802 | GV * gv; | |
803 | IO * io; | |
804 | bool input = TRUE; | |
805 | bool details = FALSE; | |
806 | ||
807 | if (items > 1) { | |
39f7a870 JH |
808 | SV **svp; |
809 | ||
810 | for (svp = MARK + 2; svp <= SP; svp += 2) { | |
811 | SV **varp = svp; | |
812 | SV **valp = svp + 1; | |
813 | STRLEN klen; | |
6867be6d | 814 | const char *key = SvPV(*varp, klen); |
39f7a870 JH |
815 | |
816 | switch (*key) { | |
817 | case 'i': | |
818 | if (klen == 5 && memEQ(key, "input", 5)) { | |
819 | input = SvTRUE(*valp); | |
820 | break; | |
821 | } | |
822 | goto fail; | |
823 | case 'o': | |
824 | if (klen == 6 && memEQ(key, "output", 6)) { | |
825 | input = !SvTRUE(*valp); | |
826 | break; | |
827 | } | |
828 | goto fail; | |
829 | case 'd': | |
830 | if (klen == 7 && memEQ(key, "details", 7)) { | |
831 | details = SvTRUE(*valp); | |
832 | break; | |
833 | } | |
834 | goto fail; | |
835 | default: | |
836 | fail: | |
837 | Perl_croak(aTHX_ | |
838 | "get_layers: unknown argument '%s'", | |
839 | key); | |
840 | } | |
841 | } | |
842 | ||
843 | SP -= (items - 1); | |
844 | } | |
845 | ||
846 | sv = POPs; | |
847 | gv = (GV*)sv; | |
848 | ||
849 | if (!isGV(sv)) { | |
850 | if (SvROK(sv) && isGV(SvRV(sv))) | |
851 | gv = (GV*)SvRV(sv); | |
852 | else | |
7a5fd60d | 853 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
39f7a870 JH |
854 | } |
855 | ||
856 | if (gv && (io = GvIO(gv))) { | |
857 | dTARGET; | |
858 | AV* av = PerlIO_get_layers(aTHX_ input ? | |
859 | IoIFP(io) : IoOFP(io)); | |
860 | I32 i; | |
861 | I32 last = av_len(av); | |
862 | I32 nitem = 0; | |
863 | ||
864 | for (i = last; i >= 0; i -= 3) { | |
865 | SV **namsvp; | |
866 | SV **argsvp; | |
867 | SV **flgsvp; | |
868 | bool namok, argok, flgok; | |
869 | ||
870 | namsvp = av_fetch(av, i - 2, FALSE); | |
871 | argsvp = av_fetch(av, i - 1, FALSE); | |
872 | flgsvp = av_fetch(av, i, FALSE); | |
873 | ||
874 | namok = namsvp && *namsvp && SvPOK(*namsvp); | |
875 | argok = argsvp && *argsvp && SvPOK(*argsvp); | |
876 | flgok = flgsvp && *flgsvp && SvIOK(*flgsvp); | |
877 | ||
878 | if (details) { | |
879 | XPUSHs(namok ? | |
95a20fc0 | 880 | newSVpv(SvPVX_const(*namsvp), 0) : &PL_sv_undef); |
39f7a870 | 881 | XPUSHs(argok ? |
95a20fc0 | 882 | newSVpv(SvPVX_const(*argsvp), 0) : &PL_sv_undef); |
39f7a870 JH |
883 | if (flgok) |
884 | XPUSHi(SvIVX(*flgsvp)); | |
885 | else | |
886 | XPUSHs(&PL_sv_undef); | |
887 | nitem += 3; | |
888 | } | |
889 | else { | |
890 | if (namok && argok) | |
891 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf"(%"SVf")", | |
892 | *namsvp, *argsvp)); | |
893 | else if (namok) | |
894 | XPUSHs(Perl_newSVpvf(aTHX_ "%"SVf, *namsvp)); | |
895 | else | |
896 | XPUSHs(&PL_sv_undef); | |
897 | nitem++; | |
898 | if (flgok) { | |
899 | IV flags = SvIVX(*flgsvp); | |
900 | ||
901 | if (flags & PERLIO_F_UTF8) { | |
902 | XPUSHs(newSVpvn("utf8", 4)); | |
903 | nitem++; | |
904 | } | |
905 | } | |
906 | } | |
907 | } | |
908 | ||
909 | SvREFCNT_dec(av); | |
910 | ||
911 | XSRETURN(nitem); | |
912 | } | |
913 | } | |
5fef3b4a | 914 | #endif |
39f7a870 JH |
915 | |
916 | XSRETURN(0); | |
917 | } | |
918 | ||
9a7034eb | 919 | XS(XS_Internals_hash_seed) |
c910b28a | 920 | { |
c85d3f85 NC |
921 | /* Using dXSARGS would also have dITEM and dSP, |
922 | * which define 2 unused local variables. */ | |
557b887a | 923 | dAXMARK; |
81eaca17 | 924 | XSRETURN_UV(PERL_HASH_SEED); |
c910b28a JH |
925 | } |
926 | ||
008fb0c0 | 927 | XS(XS_Internals_rehash_seed) |
8e90d776 NC |
928 | { |
929 | /* Using dXSARGS would also have dITEM and dSP, | |
930 | * which define 2 unused local variables. */ | |
557b887a | 931 | dAXMARK; |
008fb0c0 | 932 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 NC |
933 | } |
934 | ||
05619474 NC |
935 | XS(XS_Internals_HvREHASH) /* Subject to change */ |
936 | { | |
937 | dXSARGS; | |
938 | if (SvROK(ST(0))) { | |
6867be6d | 939 | const HV *hv = (HV *) SvRV(ST(0)); |
05619474 NC |
940 | if (items == 1 && SvTYPE(hv) == SVt_PVHV) { |
941 | if (HvREHASH(hv)) | |
942 | XSRETURN_YES; | |
943 | else | |
944 | XSRETURN_NO; | |
945 | } | |
946 | } | |
947 | Perl_croak(aTHX_ "Internals::HvREHASH $hashref"); | |
948 | } | |
241d1a3b NC |
949 | |
950 | /* | |
951 | * Local variables: | |
952 | * c-indentation-style: bsd | |
953 | * c-basic-offset: 4 | |
954 | * indent-tabs-mode: t | |
955 | * End: | |
956 | * | |
37442d52 RGS |
957 | * ex: set ts=8 sts=4 sw=4 noet: |
958 | */ |