1 /* $Id: Name.xs,v 1.5 2004/08/18 13:21:44 xmath Exp $
2 * Copyright (C) 2004 Matthijs van Duin. 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 MODULE = Sub::Name PACKAGE = Sub::Name
24 HV *stash = CopSTASH(PL_curcop);
25 char *s, *end = NULL, saved;
27 if (!SvROK(sub) && SvGMAGICAL(sub))
30 cv = (CV *) SvRV(sub);
31 else if (SvTYPE(sub) == SVt_PVGV)
34 croak(PL_no_usym, "a subroutine");
35 else if (PL_op->op_private & HINT_STRICT_REFS)
36 croak(PL_no_symref, SvPV_nolen(sub), "a subroutine");
37 else if ((gv = gv_fetchpv(SvPV_nolen(sub), FALSE, SVt_PVCV)))
40 croak("Undefined subroutine %s", SvPV_nolen(sub));
41 if (SvTYPE(cv) != SVt_PVCV && SvTYPE(cv) != SVt_PVFM)
42 croak("Not a subroutine reference");
43 for (s = name; *s++; ) {
44 if (*s == ':' && s[-1] == ':')
46 else if (*s && s[-1] == '\'')
53 stash = GvHV(gv_fetchpv(name, TRUE, SVt_PVHV));
58 gv_init(gv, stash, name, s - name, TRUE);
59 #ifndef USE_5005THREADS
61 /* cheap way to refcount the gv */
62 av_store((AV *) AvARRAY(CvPADLIST(cv))[0], 0, (SV *) gv);
66 /* expensive way to refcount the gv */
67 MAGIC *mg = SvMAGIC(cv);
68 while (mg && mg->mg_virtual != &subname_vtbl)
69 mg = mg->mg_moremagic;
71 mg = sv_magicext((SV *) cv, NULL, PERL_MAGIC_ext,
72 &subname_vtbl, NULL, 0);
73 if (mg->mg_flags & MGf_REFCOUNTED)
74 SvREFCNT_dec(mg->mg_obj);
75 mg->mg_flags |= MGf_REFCOUNTED;
76 mg->mg_obj = (SV *) gv;