| 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 | |
| 9 | /* package attributes; */ |
| 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); |
| 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 *.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 | #include "XSUB.h" |
| 39 | |
| 40 | static int |
| 41 | modify_SV_attributes(pTHX_ SV *sv, SV **retlist, SV **attrlist, int numattrs) |
| 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 | case 's': |
| 88 | if (strEQ(name, "unique")) { |
| 89 | if (negated) |
| 90 | GvUNIQUE_off(CvGV((CV*)sv)); |
| 91 | else |
| 92 | GvUNIQUE_on(CvGV((CV*)sv)); |
| 93 | continue; |
| 94 | } |
| 95 | break; |
| 96 | } |
| 97 | break; |
| 98 | } |
| 99 | break; |
| 100 | default: |
| 101 | switch ((int)len) { |
| 102 | case 6: |
| 103 | switch (*name) { |
| 104 | case 's': |
| 105 | if (strEQ(name, "unique")) { |
| 106 | /* toke.c has already marked as GVf_UNIQUE */ |
| 107 | continue; |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | break; |
| 112 | } |
| 113 | /* anything recognized had a 'continue' above */ |
| 114 | *retlist++ = attr; |
| 115 | nret++; |
| 116 | } |
| 117 | |
| 118 | return nret; |
| 119 | } |
| 120 | |
| 121 | |
| 122 | |
| 123 | /* package attributes; */ |
| 124 | |
| 125 | XS(XS_attributes_bootstrap) |
| 126 | { |
| 127 | dXSARGS; |
| 128 | char *file = __FILE__; |
| 129 | |
| 130 | if( items > 1 ) |
| 131 | Perl_croak(aTHX_ "Usage: attributes::bootstrap $module"); |
| 132 | |
| 133 | newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, ""); |
| 134 | newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file); |
| 135 | newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$"); |
| 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) |
| 158 | XSRETURN(modify_SV_attributes(aTHX_ sv, &ST(0), &ST(1), items-1)); |
| 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))); |
| 192 | if (GvUNIQUE(CvGV((CV*)sv))) |
| 193 | XPUSHs(sv_2mortal(newSVpvn("unique", 6))); |
| 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: |
| 234 | if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv))) |
| 235 | stash = GvSTASH(CvGV(sv)); |
| 236 | else if (/* !CvANON(sv) && */ CvSTASH(sv)) |
| 237 | stash = CvSTASH(sv); |
| 238 | break; |
| 239 | case SVt_PVMG: |
| 240 | if (!(SvFAKE(sv) && SvTIED_mg(sv, PERL_MAGIC_glob))) |
| 241 | break; |
| 242 | /*FALLTHROUGH*/ |
| 243 | case SVt_PVGV: |
| 244 | if (GvGP(sv) && GvESTASH((GV*)sv)) |
| 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; |
| 278 | if (SvGMAGICAL(rv)) |
| 279 | mg_get(rv); |
| 280 | if (!(SvOK(rv) && SvROK(rv))) |
| 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; |
| 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 | |