1 /* Copyright (C) 2004, 2008 Matthijs van Duin. All rights reserved.
2 * Copyright (C) 2014, cPanel Inc. All rights reserved.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the same terms as Perl itself.
10 #define NEED_sv_2pv_flags
11 #define NEED_newSVpvn_flags
12 #define NEED_gv_fetchpvn_flags
13 #define NEED_sv_catpvn_flags
14 #define NEED_croak_xs_usage
17 static MGVTBL subname_vtbl;
19 #ifndef PERL_MAGIC_ext
20 # define PERL_MAGIC_ext '~'
24 #define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
28 #define Newxz(ptr, num, type) Newz(0, ptr, num, type)
32 #define HvNAMELEN_get(stash) strlen(HvNAME(stash))
36 #define HvNAMEUTF8(stash) 0
41 #define GvNAMEUTF8(gv) HEK_UTF8(GvNAME_HEK(gv))
43 #define GvNAMEUTF8(gv) 0
55 #ifndef sv_catpvn_flags
56 #define sv_catpvn_flags(b,n,l,f) sv_catpvn(b,n,l)
59 MODULE = Sub::Name PACKAGE = Sub::Name
70 HV *stash = CopSTASH(PL_curcop);
71 const char *s, *end = NULL, *begin = NULL;
74 const char* nameptr = SvPV(name, namelen);
75 int utf8flag = SvUTF8(name);
77 bool need_subst = FALSE;
79 if (!SvROK(sub) && SvGMAGICAL(sub))
82 cv = (CV *) SvRV(sub);
83 else if (SvTYPE(sub) == SVt_PVGV)
86 croak(PL_no_usym, "a subroutine");
87 else if (PL_op->op_private & HINT_STRICT_REFS)
88 croak("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use",
89 SvPV_nolen(sub), "a subroutine");
90 else if ((gv = gv_fetchsv(sub, FALSE, SVt_PVCV)))
93 croak("Undefined subroutine %s", SvPV_nolen(sub));
94 if (SvTYPE(cv) != SVt_PVCV && SvTYPE(cv) != SVt_PVFM)
95 croak("Not a subroutine reference");
97 for (s = nameptr; s <= nameptr + namelen; s++) {
98 if (s > nameptr && *s == ':' && s[-1] == ':') {
104 else if (s > nameptr && *s != '\0' && s[-1] == '\'') {
115 STRLEN length = end - nameptr + quotes_seen - (*end == '\'' ? 1 : 0);
118 tmp = sv_2mortal(newSV(length));
120 for (i = 0, j = 0; j < end - nameptr; ++i, ++j) {
121 if (nameptr[j] == '\'') {
126 left[i] = nameptr[j];
129 stash = gv_stashpvn(left, length, GV_ADD | utf8flag);
132 stash = gv_stashpvn(nameptr, end - nameptr, GV_ADD | utf8flag);
134 namelen -= begin - nameptr;
137 /* under debugger, provide information about sub location */
138 if (PL_DBsub && CvGV(cv)) {
139 HV* DBsub = GvHV(PL_DBsub);
142 GV* oldgv = CvGV(cv);
143 HV* oldhv = GvSTASH(oldgv);
144 SV* old_full_name = sv_2mortal(newSVpvn_flags(HvNAME(oldhv), HvNAMELEN_get(oldhv), HvNAMEUTF8(oldhv) ? SVf_UTF8 : 0));
145 sv_catpvn(old_full_name, "::", 2);
146 sv_catpvn_flags(old_full_name, GvNAME(oldgv), GvNAMELEN(oldgv), GvNAMEUTF8(oldgv) ? SV_CATUTF8 : SV_CATBYTES);
148 old_data = hv_fetch_ent(DBsub, old_full_name, 0, 0);
150 if (old_data && HeVAL(old_data)) {
151 SV* new_full_name = sv_2mortal(newSVpvn_flags(HvNAME(stash), HvNAMELEN_get(stash), HvNAMEUTF8(stash) ? SVf_UTF8 : 0));
152 sv_catpvn(new_full_name, "::", 2);
153 sv_catpvn_flags(new_full_name, nameptr, s - nameptr, utf8flag ? SV_CATUTF8 : SV_CATBYTES);
154 SvREFCNT_inc(HeVAL(old_data));
155 if (hv_store_ent(DBsub, new_full_name, HeVAL(old_data), 0) != NULL)
156 SvREFCNT_inc(HeVAL(old_data));
160 gv = (GV *) newSV(0);
161 gv_init_pvn(gv, stash, nameptr, s - nameptr, GV_ADDMULTI | utf8flag);
164 while (mg && mg->mg_virtual != &subname_vtbl)
165 mg = mg->mg_moremagic;
168 mg->mg_moremagic = SvMAGIC(cv);
169 mg->mg_type = PERL_MAGIC_ext;
170 mg->mg_virtual = &subname_vtbl;
173 if (mg->mg_flags & MGf_REFCOUNTED)
174 SvREFCNT_dec(mg->mg_obj);
175 mg->mg_flags |= MGf_REFCOUNTED;
176 mg->mg_obj = (SV *) gv;