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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 | |
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 | |
41 | modify_SV_attributes(pTHXo_ 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); | |
51 | if (negated = (*name == '-')) { | |
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; | |
87 | } | |
88 | break; | |
89 | } | |
90 | break; | |
91 | default: | |
92 | /* nothing, yet */ | |
93 | break; | |
94 | } | |
95 | /* anything recognized had a 'continue' above */ | |
96 | *retlist++ = attr; | |
97 | nret++; | |
98 | } | |
99 | ||
100 | return nret; | |
101 | } | |
102 | ||
103 | ||
09bef843 SB |
104 | |
105 | /* package attributes; */ | |
106 | ||
107 | XS(XS_attributes_bootstrap) | |
108 | { | |
109 | dXSARGS; | |
110 | char *file = __FILE__; | |
111 | ||
112 | newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, ""); | |
113 | newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file); | |
114 | newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$"); | |
115 | newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$"); | |
116 | newXSproto("attributes::reftype", XS_attributes_reftype, file, "$"); | |
117 | ||
118 | XSRETURN(0); | |
119 | } | |
120 | ||
121 | XS(XS_attributes__modify_attrs) | |
122 | { | |
123 | dXSARGS; | |
124 | SV *rv, *sv; | |
125 | ||
126 | if (items < 1) { | |
127 | usage: | |
128 | Perl_croak(aTHX_ | |
129 | "Usage: attributes::_modify_attrs $reference, @attributes"); | |
130 | } | |
131 | ||
132 | rv = ST(0); | |
133 | if (!(SvOK(rv) && SvROK(rv))) | |
134 | goto usage; | |
135 | sv = SvRV(rv); | |
136 | if (items > 1) | |
349fd7b7 | 137 | XSRETURN(modify_SV_attributes(aTHXo_ sv, &ST(0), &ST(1), items-1)); |
09bef843 SB |
138 | |
139 | XSRETURN(0); | |
140 | } | |
141 | ||
142 | XS(XS_attributes__fetch_attrs) | |
143 | { | |
144 | dXSARGS; | |
145 | SV *rv, *sv; | |
146 | cv_flags_t cvflags; | |
147 | ||
148 | if (items != 1) { | |
149 | usage: | |
150 | Perl_croak(aTHX_ | |
151 | "Usage: attributes::_fetch_attrs $reference"); | |
152 | } | |
153 | ||
154 | rv = ST(0); | |
155 | SP -= items; | |
156 | if (!(SvOK(rv) && SvROK(rv))) | |
157 | goto usage; | |
158 | sv = SvRV(rv); | |
159 | ||
160 | switch (SvTYPE(sv)) { | |
161 | case SVt_PVCV: | |
162 | cvflags = CvFLAGS((CV*)sv); | |
163 | if (cvflags & CVf_LOCKED) | |
164 | XPUSHs(sv_2mortal(newSVpvn("locked", 6))); | |
165 | #ifdef CVf_LVALUE | |
166 | if (cvflags & CVf_LVALUE) | |
167 | XPUSHs(sv_2mortal(newSVpvn("lvalue", 6))); | |
168 | #endif | |
169 | if (cvflags & CVf_METHOD) | |
170 | XPUSHs(sv_2mortal(newSVpvn("method", 6))); | |
171 | break; | |
172 | default: | |
173 | break; | |
174 | } | |
175 | ||
176 | PUTBACK; | |
177 | } | |
178 | ||
179 | XS(XS_attributes__guess_stash) | |
180 | { | |
181 | dXSARGS; | |
182 | SV *rv, *sv; | |
183 | #ifdef dXSTARGET | |
184 | dXSTARGET; | |
185 | #else | |
186 | SV * TARG = sv_newmortal(); | |
187 | #endif | |
188 | ||
189 | if (items != 1) { | |
190 | usage: | |
191 | Perl_croak(aTHX_ | |
192 | "Usage: attributes::_guess_stash $reference"); | |
193 | } | |
194 | ||
195 | rv = ST(0); | |
196 | ST(0) = TARG; | |
197 | if (!(SvOK(rv) && SvROK(rv))) | |
198 | goto usage; | |
199 | sv = SvRV(rv); | |
200 | ||
201 | if (SvOBJECT(sv)) | |
202 | sv_setpv(TARG, HvNAME(SvSTASH(sv))); | |
203 | #if 0 /* this was probably a bad idea */ | |
204 | else if (SvPADMY(sv)) | |
205 | sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */ | |
206 | #endif | |
207 | else { | |
208 | HV *stash = Nullhv; | |
209 | switch (SvTYPE(sv)) { | |
210 | case SVt_PVCV: | |
211 | if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)) && | |
212 | HvNAME(GvSTASH(CvGV(sv)))) | |
213 | stash = GvSTASH(CvGV(sv)); | |
214 | else if (/* !CvANON(sv) && */ CvSTASH(sv) && HvNAME(CvSTASH(sv))) | |
215 | stash = CvSTASH(sv); | |
216 | break; | |
217 | case SVt_PVMG: | |
218 | if (!(SvFAKE(sv) && SvTIED_mg(sv, '*'))) | |
219 | break; | |
220 | /*FALLTHROUGH*/ | |
221 | case SVt_PVGV: | |
222 | if (GvGP(sv) && GvESTASH((GV*)sv) && HvNAME(GvESTASH((GV*)sv))) | |
223 | stash = GvESTASH((GV*)sv); | |
224 | break; | |
225 | default: | |
226 | break; | |
227 | } | |
228 | if (stash) | |
229 | sv_setpv(TARG, HvNAME(stash)); | |
230 | } | |
231 | ||
232 | #ifdef dXSTARGET | |
233 | SvSETMAGIC(TARG); | |
234 | #endif | |
235 | XSRETURN(1); | |
236 | } | |
237 | ||
238 | XS(XS_attributes_reftype) | |
239 | { | |
240 | dXSARGS; | |
241 | SV *rv, *sv; | |
242 | #ifdef dXSTARGET | |
243 | dXSTARGET; | |
244 | #else | |
245 | SV * TARG = sv_newmortal(); | |
246 | #endif | |
247 | ||
248 | if (items != 1) { | |
249 | usage: | |
250 | Perl_croak(aTHX_ | |
251 | "Usage: attributes::reftype $reference"); | |
252 | } | |
253 | ||
254 | rv = ST(0); | |
255 | ST(0) = TARG; | |
256 | if (!SvOK(rv)) { | |
257 | ST(0) = &PL_sv_no; | |
258 | XSRETURN(1); | |
259 | } | |
260 | if (!SvROK(rv)) | |
261 | goto usage; | |
262 | sv = SvRV(rv); | |
263 | sv_setpv(TARG, sv_reftype(sv, 0)); | |
264 | #ifdef dXSTARGET | |
265 | SvSETMAGIC(TARG); | |
266 | #endif | |
267 | ||
268 | XSRETURN(1); | |
269 | } | |
270 | ||
271 | XS(XS_attributes__warn_reserved) | |
272 | { | |
273 | dXSARGS; | |
274 | SV *rv, *sv; | |
275 | #ifdef dXSTARGET | |
276 | dXSTARGET; | |
277 | #else | |
278 | SV * TARG = sv_newmortal(); | |
279 | #endif | |
280 | ||
281 | if (items != 0) { | |
282 | Perl_croak(aTHX_ | |
283 | "Usage: attributes::_warn_reserved ()"); | |
284 | } | |
285 | ||
286 | EXTEND(SP,1); | |
287 | ST(0) = TARG; | |
288 | sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0); | |
289 | #ifdef dXSTARGET | |
290 | SvSETMAGIC(TARG); | |
291 | #endif | |
292 | ||
293 | XSRETURN(1); | |
294 | } | |
295 |