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.
11 static MGVTBL subname_vtbl;
13 #ifndef PERL_MAGIC_ext
14 # define PERL_MAGIC_ext '~'
18 #define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
22 #define Newxz(ptr, num, type) Newz(0, ptr, num, type)
25 MODULE = Sub::Name PACKAGE = Sub::Name
36 HV *stash = CopSTASH(PL_curcop);
40 if (!SvROK(sub) && SvGMAGICAL(sub))
43 cv = (CV *) SvRV(sub);
44 else if (SvTYPE(sub) == SVt_PVGV)
47 croak(PL_no_usym, "a subroutine");
48 else if (PL_op->op_private & HINT_STRICT_REFS)
49 croak("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use",
50 SvPV_nolen(sub), "a subroutine");
51 else if ((gv = gv_fetchpv(SvPV_nolen(sub), FALSE, SVt_PVCV)))
54 croak("Undefined subroutine %s", SvPV_nolen(sub));
55 if (SvTYPE(cv) != SVt_PVCV && SvTYPE(cv) != SVt_PVFM)
56 croak("Not a subroutine reference");
57 for (s = name; *s++; ) {
58 if (*s == ':' && s[-1] == ':')
60 else if (*s && s[-1] == '\'')
65 char *namepv = savepvn(name, end - name);
66 stash = GvHV(gv_fetchpv(namepv, TRUE, SVt_PVHV));
71 gv_init(gv, stash, name, s - name, TRUE);
74 while (mg && mg->mg_virtual != &subname_vtbl)
75 mg = mg->mg_moremagic;
78 mg->mg_moremagic = SvMAGIC(cv);
79 mg->mg_type = PERL_MAGIC_ext;
80 mg->mg_virtual = &subname_vtbl;
83 if (mg->mg_flags & MGf_REFCOUNTED)
84 SvREFCNT_dec(mg->mg_obj);
85 mg->mg_flags |= MGf_REFCOUNTED;
86 mg->mg_obj = (SV *) gv;