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 | 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 | 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 MS |
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 NC |
50 | hvname = HvNAME_get(stash); |
51 | ||
52 | if (strEQ(hvname, name)) | |
3280af22 | 53 | return &PL_sv_yes; |
6d4a7be2 | 54 | |
a1d407e8 DM |
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 GS |
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 GS |
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 GS |
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 GS |
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 GS |
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 NIS |
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 NC |
112 | "Can't locate package %"SVf" for @%s::ISA", |
113 | sv, hvname); | |
6d4a7be2 | 114 | continue; |
115 | } | |
301daebc MS |
116 | if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, |
117 | len, level + 1)) { | |
3280af22 NIS |
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 JH |
129 | =head1 SV Manipulation Functions |
130 | ||
954c1994 GS |
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 AL |
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 MS |
160 | name_stash = gv_stashpv(name, FALSE); |
161 | ||
55497cff | 162 | return (type && strEQ(type,name)) || |
301daebc MS |
163 | (stash && isa_lookup(stash, name, name_stash, strlen(name), 0) |
164 | == &PL_sv_yes) | |
55497cff | 165 | ? TRUE |
166 | : FALSE ; | |
55497cff | 167 | } |
168 | ||
1b026014 NIS |
169 | #include "XSUB.h" |
170 | ||
27da23d5 JH |
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 JP |
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 AL |
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 NIS |
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 JH |
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 GS |
202 | |
203 | void | |
204 | Perl_boot_core_UNIVERSAL(pTHX) | |
205 | { | |
e1ec3a88 | 206 | const char file[] = __FILE__; |
0cb96387 GS |
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 JP |
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 JP |
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 NIS |
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 JH |
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 JH |
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 GS |
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 GS |
264 | if (SvGMAGICAL(sv)) |
265 | mg_get(sv); | |
266 | ||
253ecd6d RGS |
267 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
268 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
269 | XSRETURN_UNDEF; |
270 | ||
6867be6d | 271 | name = (const char *)SvPV(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 GS |
291 | if (SvGMAGICAL(sv)) |
292 | mg_get(sv); | |
293 | ||
253ecd6d RGS |
294 | if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv)) |
295 | || (SvGMAGICAL(sv) && SvPOKp(sv) && SvCUR(sv)))) | |
f8f70380 GS |
296 | XSRETURN_UNDEF; |
297 | ||
6867be6d | 298 | name = (const char *)SvPV(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 NIS |
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 JP |
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 GS |
355 | SV *req = ST(1); |
356 | ||
62658f4d | 357 | if (undef) { |
bfcb3514 NC |
358 | if (pkg) { |
359 | const char *name = HvNAME_get(pkg); | |
a3b680e6 | 360 | Perl_croak(aTHX_ |
bfcb3514 NC |
361 | "%s does not define $%s::VERSION--version check failed", |
362 | name, name); | |
363 | } else { | |
a3b680e6 AL |
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 PM |
368 | } |
369 | } | |
ad63d80f | 370 | |
137d6fc0 JP |
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 JP |
387 | } else { |
388 | ST(0) = sv; | |
b38a9dc5 | 389 | } |
6d4a7be2 | 390 | |
391 | XSRETURN(1); | |
392 | } | |
393 | ||
439cb1c4 JP |
394 | XS(XS_version_new) |
395 | { | |
396 | dXSARGS; | |
129318bd | 397 | if (items > 3) |
439cb1c4 JP |
398 | Perl_croak(aTHX_ "Usage: version::new(class, version)"); |
399 | SP -= items; | |
400 | { | |
0723351e | 401 | const char *classname = SvPV_nolen(ST(0)); |
137d6fc0 JP |
402 | SV *vs = ST(1); |
403 | SV *rv; | |
129318bd JP |
404 | if (items == 3 ) |
405 | { | |
137d6fc0 JP |
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 NC |
411 | if ( strcmp(classname,"version") != 0 ) /* inherited new() */ |
412 | sv_bless(rv, gv_stashpv(classname,TRUE)); | |
137d6fc0 JP |
413 | |
414 | PUSHs(sv_2mortal(rv)); | |
439cb1c4 JP |
415 | PUTBACK; |
416 | return; | |
417 | } | |
418 | } | |
419 | ||
420 | XS(XS_version_stringify) | |
421 | { | |
41be1fbd JH |
422 | dXSARGS; |
423 | if (items < 1) | |
424 | Perl_croak(aTHX_ "Usage: version::stringify(lobj, ...)"); | |
425 | SP -= items; | |
426 | { | |
abb2c242 | 427 | SV * lobj = Nullsv; |
41be1fbd JH |
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 JH |
437 | |
438 | PUTBACK; | |
439 | return; | |
440 | } | |
439cb1c4 JP |
441 | } |
442 | ||
443 | XS(XS_version_numify) | |
444 | { | |
41be1fbd JH |
445 | dXSARGS; |
446 | if (items < 1) | |
447 | Perl_croak(aTHX_ "Usage: version::numify(lobj, ...)"); | |
448 | SP -= items; | |
449 | { | |
abb2c242 | 450 | SV * lobj = Nullsv; |
41be1fbd JH |
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 JH |
460 | |
461 | PUTBACK; | |
462 | return; | |
463 | } | |
439cb1c4 JP |
464 | } |
465 | ||
466 | XS(XS_version_vcmp) | |
467 | { | |
41be1fbd JH |
468 | dXSARGS; |
469 | if (items < 1) | |
470 | Perl_croak(aTHX_ "Usage: version::vcmp(lobj, ...)"); | |
471 | SP -= items; | |
472 | { | |
abb2c242 | 473 | SV * lobj = Nullsv; |
41be1fbd JH |
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 JH |
504 | } |
505 | ||
506 | PUTBACK; | |
507 | return; | |
508 | } | |
439cb1c4 JP |
509 | } |
510 | ||
511 | XS(XS_version_boolean) | |
512 | { | |
41be1fbd JH |
513 | dXSARGS; |
514 | if (items < 1) | |
515 | Perl_croak(aTHX_ "Usage: version::boolean(lobj, ...)"); | |
516 | SP -= items; | |
517 | { | |
abb2c242 | 518 | SV * lobj = Nullsv; |
41be1fbd JH |
519 | |
520 | if (sv_derived_from(ST(0), "version")) { | |
6867be6d | 521 | /* XXX If tmp serves a purpose, explain it. */ |
41be1fbd JH |
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 JH |
532 | } |
533 | ||
534 | PUTBACK; | |
535 | return; | |
536 | } | |
439cb1c4 JP |
537 | } |
538 | ||
539 | XS(XS_version_noop) | |
540 | { | |
2dfd8427 AL |
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 JP |
551 | } |
552 | ||
c8d69e4a JP |
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 JP |
561 | |
562 | if (sv_derived_from(ST(0), "version")) { | |
6867be6d | 563 | /* XXX If tmp serves a purpose, explain it. */ |
c8d69e4a JP |
564 | SV *tmp = SvRV(ST(0)); |
565 | lobj = tmp; | |
566 | } | |
567 | else | |
568 | Perl_croak(aTHX_ "lobj is not of type version"); | |
569 | { | |
6867be6d AL |
570 | const I32 len = av_len((AV *)lobj); |
571 | const I32 digit = SvIVX(*av_fetch((AV *)lobj, len, 0)); | |
c8d69e4a JP |
572 | if ( digit < 0 ) |
573 | XSRETURN_YES; | |
574 | else | |
575 | XSRETURN_NO; | |
576 | } | |
577 | PUTBACK; | |
578 | return; | |
579 | } | |
580 | } | |
581 | ||
137d6fc0 JP |
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 JP |
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 JH |
619 | XS(XS_utf8_is_utf8) |
620 | { | |
41be1fbd JH |
621 | dXSARGS; |
622 | if (items != 1) | |
623 | Perl_croak(aTHX_ "Usage: utf8::is_utf8(sv)"); | |
624 | { | |
6867be6d | 625 | const SV *sv = ST(0); |
41be1fbd JH |
626 | { |
627 | if (SvUTF8(sv)) | |
628 | XSRETURN_YES; | |
629 | else | |
630 | XSRETURN_NO; | |
631 | } | |
632 | } | |
633 | XSRETURN_EMPTY; | |
8800c35a JH |
634 | } |
635 | ||
1b026014 NIS |
636 | XS(XS_utf8_valid) |
637 | { | |
41be1fbd JH |
638 | dXSARGS; |
639 | if (items != 1) | |
640 | Perl_croak(aTHX_ "Usage: utf8::valid(sv)"); | |
641 | { | |
642 | SV * sv = ST(0); | |
643 | { | |
644 | STRLEN len; | |
6867be6d AL |
645 | const char *s = SvPV(sv,len); |
646 | if (!SvUTF8(sv) || is_utf8_string((const U8*)s,len)) | |
41be1fbd JH |
647 | XSRETURN_YES; |
648 | else | |
649 | XSRETURN_NO; | |
650 | } | |
651 | } | |
652 | XSRETURN_EMPTY; | |
1b026014 NIS |
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 NIS |
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 AL |
705 | const bool failok = (items < 2) ? 0 : (int)SvIV(ST(1)); |
706 | const bool RETVAL = sv_utf8_downgrade(sv, failok); | |
1b026014 | 707 | |
1b026014 NIS |
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 JH |
718 | |
719 | if (items > 1) | |
720 | Perl_croak(aTHX_ "Usage: utf8::native_to_unicode(sv)"); | |
721 | ||
1b026014 NIS |
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 JH |
730 | |
731 | if (items > 1) | |
732 | Perl_croak(aTHX_ "Usage: utf8::unicode_to_native(sv)"); | |
733 | ||
1b026014 NIS |
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 JH |
739 | { |
740 | dXSARGS; | |
741 | SV *sv = SvRV(ST(0)); | |
6867be6d | 742 | |
29569577 JH |
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 JH |
756 | SvREADONLY_off(sv); |
757 | XSRETURN_NO; | |
758 | } | |
759 | } | |
14a976d6 | 760 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
761 | } |
762 | ||
14a976d6 | 763 | XS(XS_Internals_SvREFCNT) /* This is dangerous stuff. */ |
29569577 JH |
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 JH |
772 | SvREFCNT(sv) = SvIV(ST(1)); |
773 | XSRETURN_IV(SvREFCNT(sv)); | |
774 | } | |
14a976d6 | 775 | XSRETURN_UNDEF; /* Can't happen. */ |
29569577 JH |
776 | } |
777 | ||
f044d0d1 | 778 | XS(XS_Internals_hv_clear_placehold) |
dfd4ef2f NC |
779 | { |
780 | dXSARGS; | |
781 | HV *hv = (HV *) SvRV(ST(0)); | |
6867be6d | 782 | |
3540d4ce AB |
783 | if (items != 1) |
784 | Perl_croak(aTHX_ "Usage: UNIVERSAL::hv_clear_placeholders(hv)"); | |
785 | hv_clear_placeholders(hv); | |
dfd4ef2f NC |
786 | XSRETURN(0); |
787 | } | |
39f7a870 | 788 | |
39cff0d9 AE |
789 | XS(XS_Regexp_DESTROY) |
790 | { | |
39cff0d9 AE |
791 | } |
792 | ||
39f7a870 JH |
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 JH |
799 | { |
800 | SV * sv; | |
801 | GV * gv; | |
802 | IO * io; | |
803 | bool input = TRUE; | |
804 | bool details = FALSE; | |
805 | ||
806 | if (items > 1) { | |
39f7a870 JH |
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; | |
6867be6d | 813 | const char *key = SvPV(*varp, klen); |
39f7a870 JH |
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 JH |
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 JH |
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 JH |
914 | |
915 | XSRETURN(0); | |
916 | } | |
917 | ||
9a7034eb | 918 | XS(XS_Internals_hash_seed) |
c910b28a | 919 | { |
c85d3f85 NC |
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 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; |
2dfd8427 | 932 | (void)mark; |
008fb0c0 | 933 | XSRETURN_UV(PL_rehash_seed); |
8e90d776 NC |
934 | } |
935 | ||
05619474 NC |
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 NC |
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 NC |
950 | |
951 | /* | |
952 | * Local variables: | |
953 | * c-indentation-style: bsd | |
954 | * c-basic-offset: 4 | |
955 | * indent-tabs-mode: t | |
956 | * End: | |
957 | * | |
37442d52 RGS |
958 | * ex: set ts=8 sts=4 sw=4 noet: |
959 | */ |