1 /* Copyright (C) 2004, 2008 Matthijs van Duin. All rights reserved.
2 * This program is free software; you can redistribute it and/or modify
3 * it under the same terms as Perl itself.
10 static MGVTBL subname_vtbl;
12 #ifndef PERL_MAGIC_ext
13 # define PERL_MAGIC_ext '~'
17 #define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
21 MODULE = Sub::Name PACKAGE = Sub::Name
32 HV *stash = CopSTASH(PL_curcop);
33 char *s, *end = NULL, saved;
36 if (!SvROK(sub) && SvGMAGICAL(sub))
39 cv = (CV *) SvRV(sub);
40 else if (SvTYPE(sub) == SVt_PVGV)
43 croak(PL_no_usym, "a subroutine");
44 else if (PL_op->op_private & HINT_STRICT_REFS)
45 croak("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use",
46 SvPV_nolen(sub), "a subroutine");
47 else if ((gv = gv_fetchpv(SvPV_nolen(sub), FALSE, SVt_PVCV)))
50 croak("Undefined subroutine %s", SvPV_nolen(sub));
51 if (SvTYPE(cv) != SVt_PVCV && SvTYPE(cv) != SVt_PVFM)
52 croak("Not a subroutine reference");
53 for (s = name; *s++; ) {
54 if (*s == ':' && s[-1] == ':')
56 else if (*s && s[-1] == '\'')
63 stash = GvHV(gv_fetchpv(name, 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;