3 * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005
4 * by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "Perilous to us all are the devices of an art deeper than we possess
13 * ourselves." --Gandalf
18 #define PERL_IN_XSUTILS_C
22 * Contributed by Spider Boardman (spider.boardman@orb.nashua.nh.us).
25 /* package attributes; */
26 PERL_XS_EXPORT_C void XS_attributes__warn_reserved(pTHX_ CV *cv);
27 PERL_XS_EXPORT_C void XS_attributes_reftype(pTHX_ CV *cv);
28 PERL_XS_EXPORT_C void XS_attributes__modify_attrs(pTHX_ CV *cv);
29 PERL_XS_EXPORT_C void XS_attributes__guess_stash(pTHX_ CV *cv);
30 PERL_XS_EXPORT_C void XS_attributes__fetch_attrs(pTHX_ CV *cv);
31 PERL_XS_EXPORT_C void XS_attributes_bootstrap(pTHX_ CV *cv);
35 * Note that only ${pkg}::bootstrap definitions should go here.
36 * This helps keep down the start-up time, which is especially
37 * relevant for users who don't invoke any features which are
38 * (partially) implemented here.
40 * The various bootstrap definitions can take care of doing
41 * package-specific newXS() calls. Since the layout of the
42 * bundled *.pm files is in a version-specific directory,
43 * version checks in these bootstrap calls are optional.
47 Perl_boot_core_xsutils(pTHX)
49 const char file[] = __FILE__;
51 newXS("attributes::bootstrap", XS_attributes_bootstrap, file);
57 modify_SV_attributes(pTHX_ SV *sv, SV **retlist, SV **attrlist, int numattrs)
62 for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) {
64 const char *name = SvPV_const(attr, len);
65 const bool negated = (*name == '-');
76 if (memEQ(name, "assertion", 9)) {
78 CvFLAGS((CV*)sv) &= ~CVf_ASSERTION;
80 CvFLAGS((CV*)sv) |= CVf_ASSERTION;
89 if (memEQ(name, "lvalue", 6)) {
91 CvFLAGS((CV*)sv) &= ~CVf_LVALUE;
93 CvFLAGS((CV*)sv) |= CVf_LVALUE;
98 #endif /* defined CVf_LVALUE */
99 if (memEQ(name, "locked", 6)) {
101 CvFLAGS((CV*)sv) &= ~CVf_LOCKED;
103 CvFLAGS((CV*)sv) |= CVf_LOCKED;
108 if (memEQ(name, "method", 6)) {
110 CvFLAGS((CV*)sv) &= ~CVf_METHOD;
112 CvFLAGS((CV*)sv) |= CVf_METHOD;
125 if (memEQ(name, "share", 5)) {
127 Perl_croak(aTHX_ "A variable may not be unshared");
133 if (memEQ(name, "uniqu", 5)) {
134 if (SvTYPE(sv) == SVt_PVGV) {
141 /* Hope this came from toke.c if not a GV. */
148 /* anything recognized had a 'continue' above */
158 /* package attributes; */
160 XS(XS_attributes_bootstrap)
163 const char file[] = __FILE__;
166 Perl_croak(aTHX_ "Usage: attributes::bootstrap $module");
168 newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, "");
169 newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file);
170 newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$");
171 newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$");
172 newXSproto("attributes::reftype", XS_attributes_reftype, file, "$");
177 XS(XS_attributes__modify_attrs)
185 "Usage: attributes::_modify_attrs $reference, @attributes");
189 if (!(SvOK(rv) && SvROK(rv)))
193 XSRETURN(modify_SV_attributes(aTHX_ sv, &ST(0), &ST(1), items-1));
198 XS(XS_attributes__fetch_attrs)
207 "Usage: attributes::_fetch_attrs $reference");
212 if (!(SvOK(rv) && SvROK(rv)))
216 switch (SvTYPE(sv)) {
218 cvflags = CvFLAGS((CV*)sv);
219 if (cvflags & CVf_LOCKED)
220 XPUSHs(sv_2mortal(newSVpvn("locked", 6)));
222 if (cvflags & CVf_LVALUE)
223 XPUSHs(sv_2mortal(newSVpvn("lvalue", 6)));
225 if (cvflags & CVf_METHOD)
226 XPUSHs(sv_2mortal(newSVpvn("method", 6)));
227 if (GvUNIQUE(CvGV((CV*)sv)))
228 XPUSHs(sv_2mortal(newSVpvn("unique", 6)));
229 if (cvflags & CVf_ASSERTION)
230 XPUSHs(sv_2mortal(newSVpvn("assertion", 9)));
234 XPUSHs(sv_2mortal(newSVpvn("unique", 6)));
243 XS(XS_attributes__guess_stash)
252 "Usage: attributes::_guess_stash $reference");
257 if (!(SvOK(rv) && SvROK(rv)))
262 sv_setpvn(TARG, HvNAME_get(SvSTASH(sv)), HvNAMELEN_get(SvSTASH(sv)));
263 #if 0 /* this was probably a bad idea */
264 else if (SvPADMY(sv))
265 sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */
268 const HV *stash = Nullhv;
269 switch (SvTYPE(sv)) {
271 if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)))
272 stash = GvSTASH(CvGV(sv));
273 else if (/* !CvANON(sv) && */ CvSTASH(sv))
277 if (!(SvFAKE(sv) && SvTIED_mg(sv, PERL_MAGIC_glob)))
281 if (GvGP(sv) && GvESTASH((GV*)sv))
282 stash = GvESTASH((GV*)sv);
288 sv_setpvn(TARG, HvNAME_get(stash), HvNAMELEN_get(stash));
295 XS(XS_attributes_reftype)
304 "Usage: attributes::reftype $reference");
310 if (!(SvOK(rv) && SvROK(rv)))
313 sv_setpv(TARG, sv_reftype(sv, 0));
319 XS(XS_attributes__warn_reserved)
325 "Usage: attributes::_warn_reserved ()");
329 ST(0) = boolSV(ckWARN(WARN_RESERVED));
336 * c-indentation-style: bsd
338 * indent-tabs-mode: t
341 * ex: set ts=8 sts=4 sw=4 noet: