Commit | Line | Data |
---|---|---|
d6376244 JH |
1 | /* xsutils.c |
2 | * | |
acde74e1 | 3 | * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
371fce9b | 4 | * 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 | * "Perilous to us all are the devices of an art deeper than we possess | |
13 | * ourselves." --Gandalf | |
14 | */ | |
15 | ||
16 | ||
09bef843 SB |
17 | #include "EXTERN.h" |
18 | #define PERL_IN_XSUTILS_C | |
19 | #include "perl.h" | |
20 | ||
21 | /* | |
22 | * Contributed by Spider Boardman (spider.boardman@orb.nashua.nh.us). | |
23 | */ | |
24 | ||
349fd7b7 | 25 | /* package attributes; */ |
27da23d5 JH |
26 | PERL_XS_EXPORT_C void XS_attributes_reftype(pTHX_ CV *cv); |
27 | PERL_XS_EXPORT_C void XS_attributes__modify_attrs(pTHX_ CV *cv); | |
28 | PERL_XS_EXPORT_C void XS_attributes__guess_stash(pTHX_ CV *cv); | |
29 | PERL_XS_EXPORT_C void XS_attributes__fetch_attrs(pTHX_ CV *cv); | |
30 | PERL_XS_EXPORT_C void XS_attributes_bootstrap(pTHX_ CV *cv); | |
349fd7b7 GS |
31 | |
32 | ||
33 | /* | |
34 | * Note that only ${pkg}::bootstrap definitions should go here. | |
35 | * This helps keep down the start-up time, which is especially | |
36 | * relevant for users who don't invoke any features which are | |
37 | * (partially) implemented here. | |
38 | * | |
39 | * The various bootstrap definitions can take care of doing | |
40 | * package-specific newXS() calls. Since the layout of the | |
6a34af38 | 41 | * bundled *.pm files is in a version-specific directory, |
349fd7b7 GS |
42 | * version checks in these bootstrap calls are optional. |
43 | */ | |
44 | ||
a4c98449 NC |
45 | static const char file[] = __FILE__; |
46 | ||
349fd7b7 GS |
47 | void |
48 | Perl_boot_core_xsutils(pTHX) | |
49 | { | |
349fd7b7 GS |
50 | newXS("attributes::bootstrap", XS_attributes_bootstrap, file); |
51 | } | |
52 | ||
349fd7b7 GS |
53 | #include "XSUB.h" |
54 | ||
55 | static int | |
acfe0abc | 56 | modify_SV_attributes(pTHX_ SV *sv, SV **retlist, SV **attrlist, int numattrs) |
09bef843 | 57 | { |
97aff369 | 58 | dVAR; |
09bef843 | 59 | SV *attr; |
09bef843 SB |
60 | int nret; |
61 | ||
62 | for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) { | |
4373e329 | 63 | STRLEN len; |
cfd0369c | 64 | const char *name = SvPV_const(attr, len); |
4373e329 AL |
65 | const bool negated = (*name == '-'); |
66 | ||
67 | if (negated) { | |
09bef843 SB |
68 | name++; |
69 | len--; | |
70 | } | |
71 | switch (SvTYPE(sv)) { | |
72 | case SVt_PVCV: | |
73 | switch ((int)len) { | |
77c9267e | 74 | #ifdef CVf_ASSERTION |
42262798 | 75 | case 9: |
8cad210e | 76 | if (memEQ(name, "assertion", 9)) { |
42262798 NC |
77 | if (negated) |
78 | CvFLAGS((CV*)sv) &= ~CVf_ASSERTION; | |
79 | else | |
80 | CvFLAGS((CV*)sv) |= CVf_ASSERTION; | |
81 | continue; | |
82 | } | |
83 | break; | |
77c9267e | 84 | #endif |
09bef843 | 85 | case 6: |
8cad210e | 86 | switch (name[3]) { |
09bef843 | 87 | #ifdef CVf_LVALUE |
d5adc3a1 | 88 | case 'l': |
8cad210e | 89 | if (memEQ(name, "lvalue", 6)) { |
09bef843 SB |
90 | if (negated) |
91 | CvFLAGS((CV*)sv) &= ~CVf_LVALUE; | |
92 | else | |
93 | CvFLAGS((CV*)sv) |= CVf_LVALUE; | |
94 | continue; | |
95 | } | |
8cad210e | 96 | break; |
d5adc3a1 | 97 | #endif |
8cad210e | 98 | case 'k': |
8cad210e | 99 | if (memEQ(name, "locked", 6)) { |
09bef843 SB |
100 | if (negated) |
101 | CvFLAGS((CV*)sv) &= ~CVf_LOCKED; | |
102 | else | |
103 | CvFLAGS((CV*)sv) |= CVf_LOCKED; | |
104 | continue; | |
105 | } | |
106 | break; | |
8cad210e NC |
107 | case 'h': |
108 | if (memEQ(name, "method", 6)) { | |
09bef843 SB |
109 | if (negated) |
110 | CvFLAGS((CV*)sv) &= ~CVf_METHOD; | |
111 | else | |
112 | CvFLAGS((CV*)sv) |= CVf_METHOD; | |
113 | continue; | |
114 | } | |
115 | break; | |
116 | } | |
117 | break; | |
118 | } | |
119 | break; | |
120 | default: | |
0256094b | 121 | switch ((int)len) { |
95f0a2f1 | 122 | case 6: |
8cad210e NC |
123 | switch (name[5]) { |
124 | case 'd': | |
125 | if (memEQ(name, "share", 5)) { | |
13c1b207 DM |
126 | if (negated) |
127 | Perl_croak(aTHX_ "A variable may not be unshared"); | |
128 | SvSHARE(sv); | |
129 | continue; | |
130 | } | |
131 | break; | |
8cad210e NC |
132 | case 'e': |
133 | if (memEQ(name, "uniqu", 5)) { | |
95f0a2f1 | 134 | if (SvTYPE(sv) == SVt_PVGV) { |
44f8325f | 135 | if (negated) { |
95f0a2f1 | 136 | GvUNIQUE_off(sv); |
44f8325f | 137 | } else { |
95f0a2f1 | 138 | GvUNIQUE_on(sv); |
44f8325f | 139 | } |
95f0a2f1 SB |
140 | } |
141 | /* Hope this came from toke.c if not a GV. */ | |
0256094b DM |
142 | continue; |
143 | } | |
144 | } | |
145 | } | |
09bef843 SB |
146 | break; |
147 | } | |
148 | /* anything recognized had a 'continue' above */ | |
149 | *retlist++ = attr; | |
150 | nret++; | |
151 | } | |
152 | ||
153 | return nret; | |
154 | } | |
155 | ||
156 | ||
09bef843 SB |
157 | |
158 | /* package attributes; */ | |
159 | ||
160 | XS(XS_attributes_bootstrap) | |
161 | { | |
97aff369 | 162 | dVAR; |
09bef843 | 163 | dXSARGS; |
09bef843 | 164 | |
592f5969 MS |
165 | if( items > 1 ) |
166 | Perl_croak(aTHX_ "Usage: attributes::bootstrap $module"); | |
b7953727 | 167 | |
09bef843 SB |
168 | newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file); |
169 | newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$"); | |
170 | newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$"); | |
171 | newXSproto("attributes::reftype", XS_attributes_reftype, file, "$"); | |
172 | ||
173 | XSRETURN(0); | |
174 | } | |
175 | ||
176 | XS(XS_attributes__modify_attrs) | |
177 | { | |
97aff369 | 178 | dVAR; |
09bef843 SB |
179 | dXSARGS; |
180 | SV *rv, *sv; | |
181 | ||
182 | if (items < 1) { | |
183 | usage: | |
184 | Perl_croak(aTHX_ | |
185 | "Usage: attributes::_modify_attrs $reference, @attributes"); | |
186 | } | |
187 | ||
188 | rv = ST(0); | |
189 | if (!(SvOK(rv) && SvROK(rv))) | |
190 | goto usage; | |
191 | sv = SvRV(rv); | |
192 | if (items > 1) | |
acfe0abc | 193 | XSRETURN(modify_SV_attributes(aTHX_ sv, &ST(0), &ST(1), items-1)); |
09bef843 SB |
194 | |
195 | XSRETURN(0); | |
196 | } | |
197 | ||
198 | XS(XS_attributes__fetch_attrs) | |
199 | { | |
97aff369 | 200 | dVAR; |
09bef843 SB |
201 | dXSARGS; |
202 | SV *rv, *sv; | |
203 | cv_flags_t cvflags; | |
204 | ||
205 | if (items != 1) { | |
206 | usage: | |
207 | Perl_croak(aTHX_ | |
208 | "Usage: attributes::_fetch_attrs $reference"); | |
209 | } | |
210 | ||
211 | rv = ST(0); | |
212 | SP -= items; | |
213 | if (!(SvOK(rv) && SvROK(rv))) | |
214 | goto usage; | |
215 | sv = SvRV(rv); | |
216 | ||
217 | switch (SvTYPE(sv)) { | |
218 | case SVt_PVCV: | |
219 | cvflags = CvFLAGS((CV*)sv); | |
220 | if (cvflags & CVf_LOCKED) | |
396482e1 | 221 | XPUSHs(sv_2mortal(newSVpvs("locked"))); |
09bef843 SB |
222 | #ifdef CVf_LVALUE |
223 | if (cvflags & CVf_LVALUE) | |
396482e1 | 224 | XPUSHs(sv_2mortal(newSVpvs("lvalue"))); |
09bef843 SB |
225 | #endif |
226 | if (cvflags & CVf_METHOD) | |
396482e1 | 227 | XPUSHs(sv_2mortal(newSVpvs("method"))); |
7fb37951 | 228 | if (GvUNIQUE(CvGV((CV*)sv))) |
396482e1 | 229 | XPUSHs(sv_2mortal(newSVpvs("unique"))); |
06492da6 | 230 | if (cvflags & CVf_ASSERTION) |
396482e1 | 231 | XPUSHs(sv_2mortal(newSVpvs("assertion"))); |
95f0a2f1 SB |
232 | break; |
233 | case SVt_PVGV: | |
234 | if (GvUNIQUE(sv)) | |
396482e1 | 235 | XPUSHs(sv_2mortal(newSVpvs("unique"))); |
09bef843 SB |
236 | break; |
237 | default: | |
238 | break; | |
239 | } | |
240 | ||
241 | PUTBACK; | |
242 | } | |
243 | ||
244 | XS(XS_attributes__guess_stash) | |
245 | { | |
97aff369 | 246 | dVAR; |
09bef843 SB |
247 | dXSARGS; |
248 | SV *rv, *sv; | |
d277572a | 249 | dXSTARG; |
09bef843 SB |
250 | |
251 | if (items != 1) { | |
252 | usage: | |
253 | Perl_croak(aTHX_ | |
254 | "Usage: attributes::_guess_stash $reference"); | |
255 | } | |
256 | ||
257 | rv = ST(0); | |
258 | ST(0) = TARG; | |
259 | if (!(SvOK(rv) && SvROK(rv))) | |
260 | goto usage; | |
261 | sv = SvRV(rv); | |
262 | ||
263 | if (SvOBJECT(sv)) | |
7423f6db | 264 | sv_setpvn(TARG, HvNAME_get(SvSTASH(sv)), HvNAMELEN_get(SvSTASH(sv))); |
09bef843 SB |
265 | #if 0 /* this was probably a bad idea */ |
266 | else if (SvPADMY(sv)) | |
267 | sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */ | |
268 | #endif | |
269 | else { | |
5c284bb0 | 270 | const HV *stash = NULL; |
09bef843 SB |
271 | switch (SvTYPE(sv)) { |
272 | case SVt_PVCV: | |
6676db26 | 273 | if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv))) |
09bef843 | 274 | stash = GvSTASH(CvGV(sv)); |
6676db26 | 275 | else if (/* !CvANON(sv) && */ CvSTASH(sv)) |
09bef843 SB |
276 | stash = CvSTASH(sv); |
277 | break; | |
09bef843 | 278 | case SVt_PVGV: |
6676db26 | 279 | if (GvGP(sv) && GvESTASH((GV*)sv)) |
09bef843 SB |
280 | stash = GvESTASH((GV*)sv); |
281 | break; | |
282 | default: | |
283 | break; | |
284 | } | |
285 | if (stash) | |
7423f6db | 286 | sv_setpvn(TARG, HvNAME_get(stash), HvNAMELEN_get(stash)); |
09bef843 SB |
287 | } |
288 | ||
09bef843 | 289 | SvSETMAGIC(TARG); |
09bef843 SB |
290 | XSRETURN(1); |
291 | } | |
292 | ||
293 | XS(XS_attributes_reftype) | |
294 | { | |
97aff369 | 295 | dVAR; |
09bef843 SB |
296 | dXSARGS; |
297 | SV *rv, *sv; | |
d277572a | 298 | dXSTARG; |
09bef843 SB |
299 | |
300 | if (items != 1) { | |
301 | usage: | |
302 | Perl_croak(aTHX_ | |
303 | "Usage: attributes::reftype $reference"); | |
304 | } | |
305 | ||
306 | rv = ST(0); | |
307 | ST(0) = TARG; | |
5b295bef | 308 | SvGETMAGIC(rv); |
121e869f | 309 | if (!(SvOK(rv) && SvROK(rv))) |
09bef843 SB |
310 | goto usage; |
311 | sv = SvRV(rv); | |
312 | sv_setpv(TARG, sv_reftype(sv, 0)); | |
09bef843 | 313 | SvSETMAGIC(TARG); |
09bef843 SB |
314 | |
315 | XSRETURN(1); | |
316 | } | |
317 | ||
66610fdd RGS |
318 | /* |
319 | * Local variables: | |
320 | * c-indentation-style: bsd | |
321 | * c-basic-offset: 4 | |
322 | * indent-tabs-mode: t | |
323 | * End: | |
324 | * | |
37442d52 RGS |
325 | * ex: set ts=8 sts=4 sw=4 noet: |
326 | */ |