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 /* under debugger, provide information about sub location */
72 if (PL_DBsub && CvGV(cv)) {
73 HV *hv = GvHV(PL_DBsub);
76 char* new_pkg = HvNAME(stash);
78 char* old_name = GvNAME( CvGV(cv) );
79 char* old_pkg = HvNAME( GvSTASH(CvGV(cv)) );
81 int old_len = strlen(old_name) + strlen(old_pkg);
82 int new_len = strlen(name) + strlen(new_pkg);
85 Newxz(full_name, (old_len > new_len ? old_len : new_len) + 3, char);
87 strcat(full_name, old_pkg);
88 strcat(full_name, "::");
89 strcat(full_name, old_name);
91 old_data = hv_fetch(hv, full_name, strlen(full_name), 0);
94 strcpy(full_name, new_pkg);
95 strcat(full_name, "::");
96 strcat(full_name, name);
98 SvREFCNT_inc(*old_data);
99 if (!hv_store(hv, full_name, strlen(full_name), *old_data, 0))
100 SvREFCNT_dec(*old_data);
105 gv = (GV *) newSV(0);
106 gv_init(gv, stash, name, s - name, TRUE);
109 while (mg && mg->mg_virtual != &subname_vtbl)
110 mg = mg->mg_moremagic;
113 mg->mg_moremagic = SvMAGIC(cv);
114 mg->mg_type = PERL_MAGIC_ext;
115 mg->mg_virtual = &subname_vtbl;
118 if (mg->mg_flags & MGf_REFCOUNTED)
119 SvREFCNT_dec(mg->mg_obj);
120 mg->mg_flags |= MGf_REFCOUNTED;
121 mg->mg_obj = (SV *) gv;