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09bef843 SB |
1 | #include "EXTERN.h" |
2 | #define PERL_IN_XSUTILS_C | |
3 | #include "perl.h" | |
4 | ||
5 | /* | |
6 | * Contributed by Spider Boardman (spider.boardman@orb.nashua.nh.us). | |
7 | */ | |
8 | ||
349fd7b7 | 9 | /* package attributes; */ |
acfe0abc GS |
10 | void XS_attributes__warn_reserved(pTHX_ CV *cv); |
11 | void XS_attributes_reftype(pTHX_ CV *cv); | |
12 | void XS_attributes__modify_attrs(pTHX_ CV *cv); | |
13 | void XS_attributes__guess_stash(pTHX_ CV *cv); | |
14 | void XS_attributes__fetch_attrs(pTHX_ CV *cv); | |
15 | void XS_attributes_bootstrap(pTHX_ CV *cv); | |
349fd7b7 GS |
16 | |
17 | ||
18 | /* | |
19 | * Note that only ${pkg}::bootstrap definitions should go here. | |
20 | * This helps keep down the start-up time, which is especially | |
21 | * relevant for users who don't invoke any features which are | |
22 | * (partially) implemented here. | |
23 | * | |
24 | * The various bootstrap definitions can take care of doing | |
25 | * package-specific newXS() calls. Since the layout of the | |
6a34af38 | 26 | * bundled *.pm files is in a version-specific directory, |
349fd7b7 GS |
27 | * version checks in these bootstrap calls are optional. |
28 | */ | |
29 | ||
30 | void | |
31 | Perl_boot_core_xsutils(pTHX) | |
32 | { | |
33 | char *file = __FILE__; | |
34 | ||
35 | newXS("attributes::bootstrap", XS_attributes_bootstrap, file); | |
36 | } | |
37 | ||
349fd7b7 GS |
38 | #include "XSUB.h" |
39 | ||
40 | static int | |
acfe0abc | 41 | modify_SV_attributes(pTHX_ SV *sv, SV **retlist, SV **attrlist, int numattrs) |
09bef843 SB |
42 | { |
43 | SV *attr; | |
44 | char *name; | |
45 | STRLEN len; | |
46 | bool negated; | |
47 | int nret; | |
48 | ||
49 | for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) { | |
50 | name = SvPV(attr, len); | |
155aba94 | 51 | if ((negated = (*name == '-'))) { |
09bef843 SB |
52 | name++; |
53 | len--; | |
54 | } | |
55 | switch (SvTYPE(sv)) { | |
56 | case SVt_PVCV: | |
57 | switch ((int)len) { | |
58 | case 6: | |
59 | switch (*name) { | |
60 | case 'l': | |
61 | #ifdef CVf_LVALUE | |
62 | if (strEQ(name, "lvalue")) { | |
63 | if (negated) | |
64 | CvFLAGS((CV*)sv) &= ~CVf_LVALUE; | |
65 | else | |
66 | CvFLAGS((CV*)sv) |= CVf_LVALUE; | |
67 | continue; | |
68 | } | |
69 | #endif /* defined CVf_LVALUE */ | |
70 | if (strEQ(name, "locked")) { | |
71 | if (negated) | |
72 | CvFLAGS((CV*)sv) &= ~CVf_LOCKED; | |
73 | else | |
74 | CvFLAGS((CV*)sv) |= CVf_LOCKED; | |
75 | continue; | |
76 | } | |
77 | break; | |
78 | case 'm': | |
79 | if (strEQ(name, "method")) { | |
80 | if (negated) | |
81 | CvFLAGS((CV*)sv) &= ~CVf_METHOD; | |
82 | else | |
83 | CvFLAGS((CV*)sv) |= CVf_METHOD; | |
84 | continue; | |
85 | } | |
86 | break; | |
0256094b | 87 | case 's': |
c8a3bf85 | 88 | if (strEQ(name, "unique")) { |
0256094b | 89 | if (negated) |
7fb37951 | 90 | GvUNIQUE_off(CvGV((CV*)sv)); |
0256094b | 91 | else |
7fb37951 | 92 | GvUNIQUE_on(CvGV((CV*)sv)); |
0256094b DM |
93 | continue; |
94 | } | |
95 | break; | |
09bef843 SB |
96 | } |
97 | break; | |
98 | } | |
99 | break; | |
100 | default: | |
0256094b DM |
101 | switch ((int)len) { |
102 | case 6: | |
103 | switch (*name) { | |
104 | case 's': | |
c8a3bf85 | 105 | if (strEQ(name, "unique")) { |
7fb37951 | 106 | /* toke.c has already marked as GVf_UNIQUE */ |
0256094b DM |
107 | continue; |
108 | } | |
109 | } | |
110 | } | |
09bef843 SB |
111 | break; |
112 | } | |
113 | /* anything recognized had a 'continue' above */ | |
114 | *retlist++ = attr; | |
115 | nret++; | |
116 | } | |
117 | ||
118 | return nret; | |
119 | } | |
120 | ||
121 | ||
09bef843 SB |
122 | |
123 | /* package attributes; */ | |
124 | ||
125 | XS(XS_attributes_bootstrap) | |
126 | { | |
127 | dXSARGS; | |
128 | char *file = __FILE__; | |
129 | ||
592f5969 MS |
130 | if( items > 1 ) |
131 | Perl_croak(aTHX_ "Usage: attributes::bootstrap $module"); | |
b7953727 | 132 | |
09bef843 SB |
133 | newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, ""); |
134 | newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file); | |
135 | newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$"); | |
136 | newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$"); | |
137 | newXSproto("attributes::reftype", XS_attributes_reftype, file, "$"); | |
138 | ||
139 | XSRETURN(0); | |
140 | } | |
141 | ||
142 | XS(XS_attributes__modify_attrs) | |
143 | { | |
144 | dXSARGS; | |
145 | SV *rv, *sv; | |
146 | ||
147 | if (items < 1) { | |
148 | usage: | |
149 | Perl_croak(aTHX_ | |
150 | "Usage: attributes::_modify_attrs $reference, @attributes"); | |
151 | } | |
152 | ||
153 | rv = ST(0); | |
154 | if (!(SvOK(rv) && SvROK(rv))) | |
155 | goto usage; | |
156 | sv = SvRV(rv); | |
157 | if (items > 1) | |
acfe0abc | 158 | XSRETURN(modify_SV_attributes(aTHX_ sv, &ST(0), &ST(1), items-1)); |
09bef843 SB |
159 | |
160 | XSRETURN(0); | |
161 | } | |
162 | ||
163 | XS(XS_attributes__fetch_attrs) | |
164 | { | |
165 | dXSARGS; | |
166 | SV *rv, *sv; | |
167 | cv_flags_t cvflags; | |
168 | ||
169 | if (items != 1) { | |
170 | usage: | |
171 | Perl_croak(aTHX_ | |
172 | "Usage: attributes::_fetch_attrs $reference"); | |
173 | } | |
174 | ||
175 | rv = ST(0); | |
176 | SP -= items; | |
177 | if (!(SvOK(rv) && SvROK(rv))) | |
178 | goto usage; | |
179 | sv = SvRV(rv); | |
180 | ||
181 | switch (SvTYPE(sv)) { | |
182 | case SVt_PVCV: | |
183 | cvflags = CvFLAGS((CV*)sv); | |
184 | if (cvflags & CVf_LOCKED) | |
185 | XPUSHs(sv_2mortal(newSVpvn("locked", 6))); | |
186 | #ifdef CVf_LVALUE | |
187 | if (cvflags & CVf_LVALUE) | |
188 | XPUSHs(sv_2mortal(newSVpvn("lvalue", 6))); | |
189 | #endif | |
190 | if (cvflags & CVf_METHOD) | |
191 | XPUSHs(sv_2mortal(newSVpvn("method", 6))); | |
7fb37951 | 192 | if (GvUNIQUE(CvGV((CV*)sv))) |
c8a3bf85 | 193 | XPUSHs(sv_2mortal(newSVpvn("unique", 6))); |
09bef843 SB |
194 | break; |
195 | default: | |
196 | break; | |
197 | } | |
198 | ||
199 | PUTBACK; | |
200 | } | |
201 | ||
202 | XS(XS_attributes__guess_stash) | |
203 | { | |
204 | dXSARGS; | |
205 | SV *rv, *sv; | |
206 | #ifdef dXSTARGET | |
207 | dXSTARGET; | |
208 | #else | |
209 | SV * TARG = sv_newmortal(); | |
210 | #endif | |
211 | ||
212 | if (items != 1) { | |
213 | usage: | |
214 | Perl_croak(aTHX_ | |
215 | "Usage: attributes::_guess_stash $reference"); | |
216 | } | |
217 | ||
218 | rv = ST(0); | |
219 | ST(0) = TARG; | |
220 | if (!(SvOK(rv) && SvROK(rv))) | |
221 | goto usage; | |
222 | sv = SvRV(rv); | |
223 | ||
224 | if (SvOBJECT(sv)) | |
225 | sv_setpv(TARG, HvNAME(SvSTASH(sv))); | |
226 | #if 0 /* this was probably a bad idea */ | |
227 | else if (SvPADMY(sv)) | |
228 | sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */ | |
229 | #endif | |
230 | else { | |
231 | HV *stash = Nullhv; | |
232 | switch (SvTYPE(sv)) { | |
233 | case SVt_PVCV: | |
6676db26 | 234 | if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv))) |
09bef843 | 235 | stash = GvSTASH(CvGV(sv)); |
6676db26 | 236 | else if (/* !CvANON(sv) && */ CvSTASH(sv)) |
09bef843 SB |
237 | stash = CvSTASH(sv); |
238 | break; | |
239 | case SVt_PVMG: | |
14befaf4 | 240 | if (!(SvFAKE(sv) && SvTIED_mg(sv, PERL_MAGIC_glob))) |
09bef843 SB |
241 | break; |
242 | /*FALLTHROUGH*/ | |
243 | case SVt_PVGV: | |
6676db26 | 244 | if (GvGP(sv) && GvESTASH((GV*)sv)) |
09bef843 SB |
245 | stash = GvESTASH((GV*)sv); |
246 | break; | |
247 | default: | |
248 | break; | |
249 | } | |
250 | if (stash) | |
251 | sv_setpv(TARG, HvNAME(stash)); | |
252 | } | |
253 | ||
254 | #ifdef dXSTARGET | |
255 | SvSETMAGIC(TARG); | |
256 | #endif | |
257 | XSRETURN(1); | |
258 | } | |
259 | ||
260 | XS(XS_attributes_reftype) | |
261 | { | |
262 | dXSARGS; | |
263 | SV *rv, *sv; | |
264 | #ifdef dXSTARGET | |
265 | dXSTARGET; | |
266 | #else | |
267 | SV * TARG = sv_newmortal(); | |
268 | #endif | |
269 | ||
270 | if (items != 1) { | |
271 | usage: | |
272 | Perl_croak(aTHX_ | |
273 | "Usage: attributes::reftype $reference"); | |
274 | } | |
275 | ||
276 | rv = ST(0); | |
277 | ST(0) = TARG; | |
4694d0ea GS |
278 | if (SvGMAGICAL(rv)) |
279 | mg_get(rv); | |
121e869f | 280 | if (!(SvOK(rv) && SvROK(rv))) |
09bef843 SB |
281 | goto usage; |
282 | sv = SvRV(rv); | |
283 | sv_setpv(TARG, sv_reftype(sv, 0)); | |
284 | #ifdef dXSTARGET | |
285 | SvSETMAGIC(TARG); | |
286 | #endif | |
287 | ||
288 | XSRETURN(1); | |
289 | } | |
290 | ||
291 | XS(XS_attributes__warn_reserved) | |
292 | { | |
293 | dXSARGS; | |
09bef843 SB |
294 | #ifdef dXSTARGET |
295 | dXSTARGET; | |
296 | #else | |
297 | SV * TARG = sv_newmortal(); | |
298 | #endif | |
299 | ||
300 | if (items != 0) { | |
301 | Perl_croak(aTHX_ | |
302 | "Usage: attributes::_warn_reserved ()"); | |
303 | } | |
304 | ||
305 | EXTEND(SP,1); | |
306 | ST(0) = TARG; | |
307 | sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0); | |
308 | #ifdef dXSTARGET | |
309 | SvSETMAGIC(TARG); | |
310 | #endif | |
311 | ||
312 | XSRETURN(1); | |
313 | } | |
314 |