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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 GS |
9 | /* package attributes; */ |
10 | void XS_attributes__warn_reserved(pTHXo_ CV *cv); | |
11 | void XS_attributes_reftype(pTHXo_ CV *cv); | |
12 | void XS_attributes__modify_attrs(pTHXo_ CV *cv); | |
13 | void XS_attributes__guess_stash(pTHXo_ CV *cv); | |
14 | void XS_attributes__fetch_attrs(pTHXo_ CV *cv); | |
15 | void XS_attributes_bootstrap(pTHXo_ CV *cv); | |
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 | |
26 | * bundled lib/*.pm files is in a version-specific directory, | |
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 | ||
38 | #ifdef PERL_OBJECT | |
39 | #define NO_XSLOCKS | |
40 | #endif /* PERL_OBJECT */ | |
41 | ||
42 | #include "XSUB.h" | |
43 | ||
44 | static int | |
45 | modify_SV_attributes(pTHXo_ SV *sv, SV **retlist, SV **attrlist, int numattrs) | |
09bef843 SB |
46 | { |
47 | SV *attr; | |
48 | char *name; | |
49 | STRLEN len; | |
50 | bool negated; | |
51 | int nret; | |
52 | ||
53 | for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) { | |
54 | name = SvPV(attr, len); | |
55 | if (negated = (*name == '-')) { | |
56 | name++; | |
57 | len--; | |
58 | } | |
59 | switch (SvTYPE(sv)) { | |
60 | case SVt_PVCV: | |
61 | switch ((int)len) { | |
62 | case 6: | |
63 | switch (*name) { | |
64 | case 'l': | |
65 | #ifdef CVf_LVALUE | |
66 | if (strEQ(name, "lvalue")) { | |
67 | if (negated) | |
68 | CvFLAGS((CV*)sv) &= ~CVf_LVALUE; | |
69 | else | |
70 | CvFLAGS((CV*)sv) |= CVf_LVALUE; | |
71 | continue; | |
72 | } | |
73 | #endif /* defined CVf_LVALUE */ | |
74 | if (strEQ(name, "locked")) { | |
75 | if (negated) | |
76 | CvFLAGS((CV*)sv) &= ~CVf_LOCKED; | |
77 | else | |
78 | CvFLAGS((CV*)sv) |= CVf_LOCKED; | |
79 | continue; | |
80 | } | |
81 | break; | |
82 | case 'm': | |
83 | if (strEQ(name, "method")) { | |
84 | if (negated) | |
85 | CvFLAGS((CV*)sv) &= ~CVf_METHOD; | |
86 | else | |
87 | CvFLAGS((CV*)sv) |= CVf_METHOD; | |
88 | continue; | |
89 | } | |
90 | break; | |
91 | } | |
92 | break; | |
93 | } | |
94 | break; | |
95 | default: | |
96 | /* nothing, yet */ | |
97 | break; | |
98 | } | |
99 | /* anything recognized had a 'continue' above */ | |
100 | *retlist++ = attr; | |
101 | nret++; | |
102 | } | |
103 | ||
104 | return nret; | |
105 | } | |
106 | ||
107 | ||
09bef843 SB |
108 | |
109 | /* package attributes; */ | |
110 | ||
111 | XS(XS_attributes_bootstrap) | |
112 | { | |
113 | dXSARGS; | |
114 | char *file = __FILE__; | |
115 | ||
116 | newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, ""); | |
117 | newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file); | |
118 | newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$"); | |
119 | newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$"); | |
120 | newXSproto("attributes::reftype", XS_attributes_reftype, file, "$"); | |
121 | ||
122 | XSRETURN(0); | |
123 | } | |
124 | ||
125 | XS(XS_attributes__modify_attrs) | |
126 | { | |
127 | dXSARGS; | |
128 | SV *rv, *sv; | |
129 | ||
130 | if (items < 1) { | |
131 | usage: | |
132 | Perl_croak(aTHX_ | |
133 | "Usage: attributes::_modify_attrs $reference, @attributes"); | |
134 | } | |
135 | ||
136 | rv = ST(0); | |
137 | if (!(SvOK(rv) && SvROK(rv))) | |
138 | goto usage; | |
139 | sv = SvRV(rv); | |
140 | if (items > 1) | |
349fd7b7 | 141 | XSRETURN(modify_SV_attributes(aTHXo_ sv, &ST(0), &ST(1), items-1)); |
09bef843 SB |
142 | |
143 | XSRETURN(0); | |
144 | } | |
145 | ||
146 | XS(XS_attributes__fetch_attrs) | |
147 | { | |
148 | dXSARGS; | |
149 | SV *rv, *sv; | |
150 | cv_flags_t cvflags; | |
151 | ||
152 | if (items != 1) { | |
153 | usage: | |
154 | Perl_croak(aTHX_ | |
155 | "Usage: attributes::_fetch_attrs $reference"); | |
156 | } | |
157 | ||
158 | rv = ST(0); | |
159 | SP -= items; | |
160 | if (!(SvOK(rv) && SvROK(rv))) | |
161 | goto usage; | |
162 | sv = SvRV(rv); | |
163 | ||
164 | switch (SvTYPE(sv)) { | |
165 | case SVt_PVCV: | |
166 | cvflags = CvFLAGS((CV*)sv); | |
167 | if (cvflags & CVf_LOCKED) | |
168 | XPUSHs(sv_2mortal(newSVpvn("locked", 6))); | |
169 | #ifdef CVf_LVALUE | |
170 | if (cvflags & CVf_LVALUE) | |
171 | XPUSHs(sv_2mortal(newSVpvn("lvalue", 6))); | |
172 | #endif | |
173 | if (cvflags & CVf_METHOD) | |
174 | XPUSHs(sv_2mortal(newSVpvn("method", 6))); | |
175 | break; | |
176 | default: | |
177 | break; | |
178 | } | |
179 | ||
180 | PUTBACK; | |
181 | } | |
182 | ||
183 | XS(XS_attributes__guess_stash) | |
184 | { | |
185 | dXSARGS; | |
186 | SV *rv, *sv; | |
187 | #ifdef dXSTARGET | |
188 | dXSTARGET; | |
189 | #else | |
190 | SV * TARG = sv_newmortal(); | |
191 | #endif | |
192 | ||
193 | if (items != 1) { | |
194 | usage: | |
195 | Perl_croak(aTHX_ | |
196 | "Usage: attributes::_guess_stash $reference"); | |
197 | } | |
198 | ||
199 | rv = ST(0); | |
200 | ST(0) = TARG; | |
201 | if (!(SvOK(rv) && SvROK(rv))) | |
202 | goto usage; | |
203 | sv = SvRV(rv); | |
204 | ||
205 | if (SvOBJECT(sv)) | |
206 | sv_setpv(TARG, HvNAME(SvSTASH(sv))); | |
207 | #if 0 /* this was probably a bad idea */ | |
208 | else if (SvPADMY(sv)) | |
209 | sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */ | |
210 | #endif | |
211 | else { | |
212 | HV *stash = Nullhv; | |
213 | switch (SvTYPE(sv)) { | |
214 | case SVt_PVCV: | |
215 | if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)) && | |
216 | HvNAME(GvSTASH(CvGV(sv)))) | |
217 | stash = GvSTASH(CvGV(sv)); | |
218 | else if (/* !CvANON(sv) && */ CvSTASH(sv) && HvNAME(CvSTASH(sv))) | |
219 | stash = CvSTASH(sv); | |
220 | break; | |
221 | case SVt_PVMG: | |
222 | if (!(SvFAKE(sv) && SvTIED_mg(sv, '*'))) | |
223 | break; | |
224 | /*FALLTHROUGH*/ | |
225 | case SVt_PVGV: | |
226 | if (GvGP(sv) && GvESTASH((GV*)sv) && HvNAME(GvESTASH((GV*)sv))) | |
227 | stash = GvESTASH((GV*)sv); | |
228 | break; | |
229 | default: | |
230 | break; | |
231 | } | |
232 | if (stash) | |
233 | sv_setpv(TARG, HvNAME(stash)); | |
234 | } | |
235 | ||
236 | #ifdef dXSTARGET | |
237 | SvSETMAGIC(TARG); | |
238 | #endif | |
239 | XSRETURN(1); | |
240 | } | |
241 | ||
242 | XS(XS_attributes_reftype) | |
243 | { | |
244 | dXSARGS; | |
245 | SV *rv, *sv; | |
246 | #ifdef dXSTARGET | |
247 | dXSTARGET; | |
248 | #else | |
249 | SV * TARG = sv_newmortal(); | |
250 | #endif | |
251 | ||
252 | if (items != 1) { | |
253 | usage: | |
254 | Perl_croak(aTHX_ | |
255 | "Usage: attributes::reftype $reference"); | |
256 | } | |
257 | ||
258 | rv = ST(0); | |
259 | ST(0) = TARG; | |
260 | if (!SvOK(rv)) { | |
261 | ST(0) = &PL_sv_no; | |
262 | XSRETURN(1); | |
263 | } | |
264 | if (!SvROK(rv)) | |
265 | goto usage; | |
266 | sv = SvRV(rv); | |
267 | sv_setpv(TARG, sv_reftype(sv, 0)); | |
268 | #ifdef dXSTARGET | |
269 | SvSETMAGIC(TARG); | |
270 | #endif | |
271 | ||
272 | XSRETURN(1); | |
273 | } | |
274 | ||
275 | XS(XS_attributes__warn_reserved) | |
276 | { | |
277 | dXSARGS; | |
278 | SV *rv, *sv; | |
279 | #ifdef dXSTARGET | |
280 | dXSTARGET; | |
281 | #else | |
282 | SV * TARG = sv_newmortal(); | |
283 | #endif | |
284 | ||
285 | if (items != 0) { | |
286 | Perl_croak(aTHX_ | |
287 | "Usage: attributes::_warn_reserved ()"); | |
288 | } | |
289 | ||
290 | EXTEND(SP,1); | |
291 | ST(0) = TARG; | |
292 | sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0); | |
293 | #ifdef dXSTARGET | |
294 | SvSETMAGIC(TARG); | |
295 | #endif | |
296 | ||
297 | XSRETURN(1); | |
298 | } | |
299 |