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 MODULE = Sub::Name PACKAGE = Sub::Name
33 HV *stash = CopSTASH(PL_curcop);
37 if (!SvROK(sub) && SvGMAGICAL(sub))
40 cv = (CV *) SvRV(sub);
41 else if (SvTYPE(sub) == SVt_PVGV)
44 croak(PL_no_usym, "a subroutine");
45 else if (PL_op->op_private & HINT_STRICT_REFS)
46 croak("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use",
47 SvPV_nolen(sub), "a subroutine");
48 else if ((gv = gv_fetchpv(SvPV_nolen(sub), FALSE, SVt_PVCV)))
51 croak("Undefined subroutine %s", SvPV_nolen(sub));
52 if (SvTYPE(cv) != SVt_PVCV && SvTYPE(cv) != SVt_PVFM)
53 croak("Not a subroutine reference");
54 for (s = name; *s++; ) {
55 if (*s == ':' && s[-1] == ':')
57 else if (*s && s[-1] == '\'')
62 char *namepv = savepvn(name, end - name);
63 stash = GvHV(gv_fetchpv(namepv, TRUE, SVt_PVHV));
68 gv_init(gv, stash, name, s - name, TRUE);
71 while (mg && mg->mg_virtual != &subname_vtbl)
72 mg = mg->mg_moremagic;
74 Newz(702, mg, 1, MAGIC);
75 mg->mg_moremagic = SvMAGIC(cv);
76 mg->mg_type = PERL_MAGIC_ext;
77 mg->mg_virtual = &subname_vtbl;
80 if (mg->mg_flags & MGf_REFCOUNTED)
81 SvREFCNT_dec(mg->mg_obj);
82 mg->mg_flags |= MGf_REFCOUNTED;
83 mg->mg_obj = (SV *) gv;