Commit | Line | Data |
eb1102fc |
1 | /* xsutils.c |
2 | * |
3 | * Copyright (c) 1999-2002, Larry Wall |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | */ |
9 | |
09bef843 |
10 | #include "EXTERN.h" |
11 | #define PERL_IN_XSUTILS_C |
12 | #include "perl.h" |
13 | |
14 | /* |
15 | * Contributed by Spider Boardman (spider.boardman@orb.nashua.nh.us). |
16 | */ |
17 | |
349fd7b7 |
18 | /* package attributes; */ |
acfe0abc |
19 | void XS_attributes__warn_reserved(pTHX_ CV *cv); |
20 | void XS_attributes_reftype(pTHX_ CV *cv); |
21 | void XS_attributes__modify_attrs(pTHX_ CV *cv); |
22 | void XS_attributes__guess_stash(pTHX_ CV *cv); |
23 | void XS_attributes__fetch_attrs(pTHX_ CV *cv); |
24 | void XS_attributes_bootstrap(pTHX_ CV *cv); |
349fd7b7 |
25 | |
26 | |
27 | /* |
28 | * Note that only ${pkg}::bootstrap definitions should go here. |
29 | * This helps keep down the start-up time, which is especially |
30 | * relevant for users who don't invoke any features which are |
31 | * (partially) implemented here. |
32 | * |
33 | * The various bootstrap definitions can take care of doing |
34 | * package-specific newXS() calls. Since the layout of the |
6a34af38 |
35 | * bundled *.pm files is in a version-specific directory, |
349fd7b7 |
36 | * version checks in these bootstrap calls are optional. |
37 | */ |
38 | |
39 | void |
40 | Perl_boot_core_xsutils(pTHX) |
41 | { |
42 | char *file = __FILE__; |
43 | |
44 | newXS("attributes::bootstrap", XS_attributes_bootstrap, file); |
45 | } |
46 | |
349fd7b7 |
47 | #include "XSUB.h" |
48 | |
49 | static int |
acfe0abc |
50 | modify_SV_attributes(pTHX_ SV *sv, SV **retlist, SV **attrlist, int numattrs) |
09bef843 |
51 | { |
52 | SV *attr; |
53 | char *name; |
54 | STRLEN len; |
55 | bool negated; |
56 | int nret; |
57 | |
58 | for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) { |
59 | name = SvPV(attr, len); |
155aba94 |
60 | if ((negated = (*name == '-'))) { |
09bef843 |
61 | name++; |
62 | len--; |
63 | } |
64 | switch (SvTYPE(sv)) { |
65 | case SVt_PVCV: |
66 | switch ((int)len) { |
67 | case 6: |
68 | switch (*name) { |
69 | case 'l': |
70 | #ifdef CVf_LVALUE |
71 | if (strEQ(name, "lvalue")) { |
72 | if (negated) |
73 | CvFLAGS((CV*)sv) &= ~CVf_LVALUE; |
74 | else |
75 | CvFLAGS((CV*)sv) |= CVf_LVALUE; |
76 | continue; |
77 | } |
78 | #endif /* defined CVf_LVALUE */ |
79 | if (strEQ(name, "locked")) { |
80 | if (negated) |
81 | CvFLAGS((CV*)sv) &= ~CVf_LOCKED; |
82 | else |
83 | CvFLAGS((CV*)sv) |= CVf_LOCKED; |
84 | continue; |
85 | } |
86 | break; |
87 | case 'm': |
88 | if (strEQ(name, "method")) { |
89 | if (negated) |
90 | CvFLAGS((CV*)sv) &= ~CVf_METHOD; |
91 | else |
92 | CvFLAGS((CV*)sv) |= CVf_METHOD; |
93 | continue; |
94 | } |
95 | break; |
95f0a2f1 |
96 | case 'u': |
97 | if (strEQ(name, "unique")) { |
0256094b |
98 | if (negated) |
7fb37951 |
99 | GvUNIQUE_off(CvGV((CV*)sv)); |
0256094b |
100 | else |
7fb37951 |
101 | GvUNIQUE_on(CvGV((CV*)sv)); |
0256094b |
102 | continue; |
103 | } |
104 | break; |
09bef843 |
105 | } |
106 | break; |
107 | } |
108 | break; |
109 | default: |
0256094b |
110 | switch ((int)len) { |
95f0a2f1 |
111 | case 6: |
0256094b |
112 | switch (*name) { |
95f0a2f1 |
113 | case 'u': |
114 | if (strEQ(name, "unique")) { |
115 | if (SvTYPE(sv) == SVt_PVGV) { |
116 | if (negated) |
117 | GvUNIQUE_off(sv); |
118 | else |
119 | GvUNIQUE_on(sv); |
120 | } |
121 | /* Hope this came from toke.c if not a GV. */ |
0256094b |
122 | continue; |
123 | } |
124 | } |
125 | } |
09bef843 |
126 | break; |
127 | } |
128 | /* anything recognized had a 'continue' above */ |
129 | *retlist++ = attr; |
130 | nret++; |
131 | } |
132 | |
133 | return nret; |
134 | } |
135 | |
136 | |
09bef843 |
137 | |
138 | /* package attributes; */ |
139 | |
140 | XS(XS_attributes_bootstrap) |
141 | { |
142 | dXSARGS; |
143 | char *file = __FILE__; |
144 | |
592f5969 |
145 | if( items > 1 ) |
146 | Perl_croak(aTHX_ "Usage: attributes::bootstrap $module"); |
b7953727 |
147 | |
09bef843 |
148 | newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, ""); |
149 | newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file); |
150 | newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$"); |
151 | newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$"); |
152 | newXSproto("attributes::reftype", XS_attributes_reftype, file, "$"); |
153 | |
154 | XSRETURN(0); |
155 | } |
156 | |
157 | XS(XS_attributes__modify_attrs) |
158 | { |
159 | dXSARGS; |
160 | SV *rv, *sv; |
161 | |
162 | if (items < 1) { |
163 | usage: |
164 | Perl_croak(aTHX_ |
165 | "Usage: attributes::_modify_attrs $reference, @attributes"); |
166 | } |
167 | |
168 | rv = ST(0); |
169 | if (!(SvOK(rv) && SvROK(rv))) |
170 | goto usage; |
171 | sv = SvRV(rv); |
172 | if (items > 1) |
acfe0abc |
173 | XSRETURN(modify_SV_attributes(aTHX_ sv, &ST(0), &ST(1), items-1)); |
09bef843 |
174 | |
175 | XSRETURN(0); |
176 | } |
177 | |
178 | XS(XS_attributes__fetch_attrs) |
179 | { |
180 | dXSARGS; |
181 | SV *rv, *sv; |
182 | cv_flags_t cvflags; |
183 | |
184 | if (items != 1) { |
185 | usage: |
186 | Perl_croak(aTHX_ |
187 | "Usage: attributes::_fetch_attrs $reference"); |
188 | } |
189 | |
190 | rv = ST(0); |
191 | SP -= items; |
192 | if (!(SvOK(rv) && SvROK(rv))) |
193 | goto usage; |
194 | sv = SvRV(rv); |
195 | |
196 | switch (SvTYPE(sv)) { |
197 | case SVt_PVCV: |
198 | cvflags = CvFLAGS((CV*)sv); |
199 | if (cvflags & CVf_LOCKED) |
200 | XPUSHs(sv_2mortal(newSVpvn("locked", 6))); |
201 | #ifdef CVf_LVALUE |
202 | if (cvflags & CVf_LVALUE) |
203 | XPUSHs(sv_2mortal(newSVpvn("lvalue", 6))); |
204 | #endif |
205 | if (cvflags & CVf_METHOD) |
206 | XPUSHs(sv_2mortal(newSVpvn("method", 6))); |
7fb37951 |
207 | if (GvUNIQUE(CvGV((CV*)sv))) |
95f0a2f1 |
208 | XPUSHs(sv_2mortal(newSVpvn("unique", 6))); |
209 | break; |
210 | case SVt_PVGV: |
211 | if (GvUNIQUE(sv)) |
212 | XPUSHs(sv_2mortal(newSVpvn("unique", 6))); |
09bef843 |
213 | break; |
214 | default: |
215 | break; |
216 | } |
217 | |
218 | PUTBACK; |
219 | } |
220 | |
221 | XS(XS_attributes__guess_stash) |
222 | { |
223 | dXSARGS; |
224 | SV *rv, *sv; |
225 | #ifdef dXSTARGET |
226 | dXSTARGET; |
227 | #else |
228 | SV * TARG = sv_newmortal(); |
229 | #endif |
230 | |
231 | if (items != 1) { |
232 | usage: |
233 | Perl_croak(aTHX_ |
234 | "Usage: attributes::_guess_stash $reference"); |
235 | } |
236 | |
237 | rv = ST(0); |
238 | ST(0) = TARG; |
239 | if (!(SvOK(rv) && SvROK(rv))) |
240 | goto usage; |
241 | sv = SvRV(rv); |
242 | |
243 | if (SvOBJECT(sv)) |
244 | sv_setpv(TARG, HvNAME(SvSTASH(sv))); |
245 | #if 0 /* this was probably a bad idea */ |
246 | else if (SvPADMY(sv)) |
247 | sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */ |
248 | #endif |
249 | else { |
250 | HV *stash = Nullhv; |
251 | switch (SvTYPE(sv)) { |
252 | case SVt_PVCV: |
6676db26 |
253 | if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv))) |
09bef843 |
254 | stash = GvSTASH(CvGV(sv)); |
6676db26 |
255 | else if (/* !CvANON(sv) && */ CvSTASH(sv)) |
09bef843 |
256 | stash = CvSTASH(sv); |
257 | break; |
258 | case SVt_PVMG: |
14befaf4 |
259 | if (!(SvFAKE(sv) && SvTIED_mg(sv, PERL_MAGIC_glob))) |
09bef843 |
260 | break; |
261 | /*FALLTHROUGH*/ |
262 | case SVt_PVGV: |
6676db26 |
263 | if (GvGP(sv) && GvESTASH((GV*)sv)) |
09bef843 |
264 | stash = GvESTASH((GV*)sv); |
265 | break; |
266 | default: |
267 | break; |
268 | } |
269 | if (stash) |
270 | sv_setpv(TARG, HvNAME(stash)); |
271 | } |
272 | |
273 | #ifdef dXSTARGET |
274 | SvSETMAGIC(TARG); |
275 | #endif |
276 | XSRETURN(1); |
277 | } |
278 | |
279 | XS(XS_attributes_reftype) |
280 | { |
281 | dXSARGS; |
282 | SV *rv, *sv; |
283 | #ifdef dXSTARGET |
284 | dXSTARGET; |
285 | #else |
286 | SV * TARG = sv_newmortal(); |
287 | #endif |
288 | |
289 | if (items != 1) { |
290 | usage: |
291 | Perl_croak(aTHX_ |
292 | "Usage: attributes::reftype $reference"); |
293 | } |
294 | |
295 | rv = ST(0); |
296 | ST(0) = TARG; |
4694d0ea |
297 | if (SvGMAGICAL(rv)) |
298 | mg_get(rv); |
121e869f |
299 | if (!(SvOK(rv) && SvROK(rv))) |
09bef843 |
300 | goto usage; |
301 | sv = SvRV(rv); |
302 | sv_setpv(TARG, sv_reftype(sv, 0)); |
303 | #ifdef dXSTARGET |
304 | SvSETMAGIC(TARG); |
305 | #endif |
306 | |
307 | XSRETURN(1); |
308 | } |
309 | |
310 | XS(XS_attributes__warn_reserved) |
311 | { |
312 | dXSARGS; |
09bef843 |
313 | #ifdef dXSTARGET |
314 | dXSTARGET; |
315 | #else |
316 | SV * TARG = sv_newmortal(); |
317 | #endif |
318 | |
319 | if (items != 0) { |
320 | Perl_croak(aTHX_ |
321 | "Usage: attributes::_warn_reserved ()"); |
322 | } |
323 | |
324 | EXTEND(SP,1); |
325 | ST(0) = TARG; |
326 | sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0); |
327 | #ifdef dXSTARGET |
328 | SvSETMAGIC(TARG); |
329 | #endif |
330 | |
331 | XSRETURN(1); |
332 | } |
333 | |