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_gv_fetchpvn_flags
14 static MGVTBL subname_vtbl;
16 #ifndef PERL_MAGIC_ext
17 # define PERL_MAGIC_ext '~'
21 #define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
25 #define Newxz(ptr, num, type) Newz(0, ptr, num, type)
28 MODULE = Sub::Name PACKAGE = Sub::Name
39 HV *stash = CopSTASH(PL_curcop);
40 const char *s, *end = NULL;
43 int utf8flag = SvUTF8(name);
44 const char* nameptr = SvPV(name, namelen);
46 if (!SvROK(sub) && SvGMAGICAL(sub))
49 cv = (CV *) SvRV(sub);
50 else if (SvTYPE(sub) == SVt_PVGV)
53 croak(PL_no_usym, "a subroutine");
54 else if (PL_op->op_private & HINT_STRICT_REFS)
55 croak("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use",
56 SvPV_nolen(sub), "a subroutine");
57 else if ((gv = gv_fetchsv(sub, FALSE, SVt_PVCV)))
60 croak("Undefined subroutine %s", SvPV_nolen(sub));
61 if (SvTYPE(cv) != SVt_PVCV && SvTYPE(cv) != SVt_PVFM)
62 croak("Not a subroutine reference");
64 for (s = nameptr; s <= nameptr + namelen; s++) {
65 if (*s == ':' && s[-1] == ':')
67 else if (*s && s[-1] == '\'')
72 stash = GvHV(gv_fetchpvn_flags(nameptr, end - nameptr, GV_ADD | utf8flag, SVt_PVHV));
74 namelen -= end - nameptr;
77 /* under debugger, provide information about sub location */
78 if (PL_DBsub && CvGV(cv)) {
79 HV *hv = GvHV(PL_DBsub);
82 char* new_pkg = HvNAME(stash);
84 char* old_name = GvNAME( CvGV(cv) );
85 char* old_pkg = HvNAME( GvSTASH(CvGV(cv)) );
87 int old_len = strlen(old_name) + strlen(old_pkg);
88 int new_len = namelen + strlen(new_pkg);
91 Newxz(full_name, (old_len > new_len ? old_len : new_len) + 3, char);
93 strcat(full_name, old_pkg);
94 strcat(full_name, "::");
95 strcat(full_name, old_name);
97 old_data = hv_fetch(hv, full_name, strlen(full_name), 0);
100 strcpy(full_name, new_pkg);
101 strcat(full_name, "::");
102 strcat(full_name, nameptr);
104 SvREFCNT_inc(*old_data);
105 if (!hv_store(hv, full_name, strlen(full_name), *old_data, 0))
106 SvREFCNT_dec(*old_data);
111 gv = (GV *) newSV(0);
112 gv_init_pvn(gv, stash, nameptr, s - nameptr, GV_ADDMULTI | utf8flag);
115 while (mg && mg->mg_virtual != &subname_vtbl)
116 mg = mg->mg_moremagic;
119 mg->mg_moremagic = SvMAGIC(cv);
120 mg->mg_type = PERL_MAGIC_ext;
121 mg->mg_virtual = &subname_vtbl;
124 if (mg->mg_flags & MGf_REFCOUNTED)
125 SvREFCNT_dec(mg->mg_obj);
126 mg->mg_flags |= MGf_REFCOUNTED;
127 mg->mg_obj = (SV *) gv;