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/cvs/Devel-FindRef/FindRef.xs
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Comparing Devel-FindRef/FindRef.xs (file contents):
Revision 1.4 by root, Wed Feb 7 21:34:02 2007 UTC vs.
Revision 1.8 by root, Sun Apr 27 05:59:06 2008 UTC

… …
10 10
11#if !PERL_VERSION_ATLEAST (5,8,9) 11#if !PERL_VERSION_ATLEAST (5,8,9)
12# define SVt_LAST 16 12# define SVt_LAST 16
13#endif 13#endif
14 14
15#define res_pair(text) \ 15#define res_pair(text) \
16 { \ 16 do { \
17 AV *av = newAV (); \ 17 AV *av = newAV (); \
18 av_push (av, newSVpv (text, 0)); \ 18 av_push (av, newSVpv (text, 0)); \
19 if (rmagical) SvRMAGICAL_on (sv); \
19 av_push (av, newRV_inc (sv)); \ 20 av_push (av, sv_rvweaken (newRV_inc (sv))); \
21 if (rmagical) SvRMAGICAL_off (sv); \
20 av_push (about, newRV_noinc ((SV *)av)); \ 22 av_push (about, newRV_noinc ((SV *)av)); \
21 } 23 } while (0)
22 24
23#define res_gv(sigil) \ 25#define res_gv(sigil) \
24 { \ 26 do { \
25 AV *av = newAV (); \ 27 AV *av = newAV (); \
26 av_push (av, newSVpv (form ("in the global %c%s::%.*s", sigil, \ 28 av_push (av, newSVpv (form ("in the global %c%s::%.*s", sigil, \
27 HvNAME (GvSTASH (sv)), \ 29 HvNAME (GvSTASH (sv)), \
28 GvNAMELEN (sv), GvNAME (sv) ? GvNAME (sv) : "<anonymous>"), \ 30 GvNAMELEN (sv), GvNAME (sv) ? GvNAME (sv) : "<anonymous>"), \
29 0)); \ 31 0)); \
30 av_push (about, newRV_noinc ((SV *)av)); \ 32 av_push (about, newRV_noinc ((SV *)av)); \
31 } 33 } while (0)
32 34
33MODULE = Devel::FindRef PACKAGE = Devel::FindRef 35MODULE = Devel::FindRef PACKAGE = Devel::FindRef
34 36
35PROTOTYPES: ENABLE 37PROTOTYPES: ENABLE
36 38
… …
77 MAGIC *mg = SvMAGIC (sv); 79 MAGIC *mg = SvMAGIC (sv);
78 while (mg) 80 while (mg)
79 { 81 {
80 if (mg->mg_obj == targ) 82 if (mg->mg_obj == targ)
81 res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type)); 83 res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type));
84
82 if ((SV *)mg->mg_ptr == targ && mg->mg_flags & MGf_REFCOUNTED) 85 if ((SV *)mg->mg_ptr == targ && mg->mg_flags & MGf_REFCOUNTED)
83 res_pair (form ("referenced (in mg_ptr) by '%c' type magic attached to", mg->mg_type)); 86 res_pair (form ("referenced (in mg_ptr) by '%c' type magic attached to", mg->mg_type));
84 87
85 mg = mg->mg_moremagic; 88 mg = mg->mg_moremagic;
86 } 89 }
87 } 90 }
88 91
89 switch (SvTYPE (sv)) 92 if (SvROK (sv))
90 { 93 {
91 case SVt_RV:
92 if (sv != target && SvRV (sv) == targ) 94 if (sv != target && SvRV (sv) == targ && !SvWEAKREF (sv))
93 res_pair ("referenced by"); 95 res_pair ("referenced by");
96 }
97 else
98 switch (SvTYPE (sv))
94 break; 99 {
100 case SVt_PVAV:
101 if (AvREAL (sv))
102 for (i = AvFILLp (sv) + 1; i--; )
103 if (AvARRAY (sv)[i] == targ)
104 res_pair (form ("in array element %d of", i));
95 105
96 case SVt_PVAV:
97 if (AvREAL (sv))
98 for (i = AvFILLp (sv) + 1; i--; )
99 if (AvARRAY (sv)[i] == targ)
100 res_pair (form ("in array element %d of", i));
101 break; 106 break;
102 107
103 case SVt_PVHV: 108 case SVt_PVHV:
104 if (hv_iterinit ((HV *)sv)) 109 if (hv_iterinit ((HV *)sv))
110 {
111 HE *he;
112
113 while ((he = hv_iternext ((HV *)sv)))
114 if (HeVAL (he) == targ)
115 res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he)));
116 }
117
118 break;
119
120 case SVt_PVCV:
105 { 121 {
122 int depth = CvDEPTH (sv);
123
124 /* Anonymous subs have a padlist but zero depth */
125 if (!depth && CvPADLIST (sv))
126 depth = 1;
127
128 if (depth)
106 HE *he; 129 {
107 while ((he = hv_iternext ((HV *)sv))) 130 AV *padlist = CvPADLIST (sv);
131
132 while (depth)
133 {
134 AV *pad = (AV *)AvARRAY (padlist)[depth];
135
136 av_push (excl, newSVuv (PTR2UV (pad))); /* exclude pads themselves from being found */
137
138 for (i = AvFILLp (pad) + 1; i--; )
108 if (HeVAL (he) == targ) 139 if (AvARRAY (pad)[i] == targ)
109 res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); 140 {
141 /* Values from constant functions are stored in the pad without any name */
142 SV *name_sv = AvARRAY (AvARRAY (padlist)[0])[i];
143
144 if (name_sv && SvPOK (name_sv))
145 res_pair (form ("in the lexical '%s' in", SvPVX (name_sv)));
146 else
147 res_pair ("in an unnamed lexical in");
148 }
149
150 --depth;
151 }
152 }
153
154 if (CvCONST (sv) && (SV*)CvXSUBANY (sv).any_ptr == targ)
155 res_pair ("the constant value of");
156
157 if (!CvWEAKOUTSIDE (sv) && (SV*)CvOUTSIDE (sv) == targ)
158 res_pair ("the containing scope for");
110 } 159 }
111 break;
112 160
161 break;
162
113 case SVt_PVCV: 163 case SVt_PVGV:
114 {
115 int depth = CvDEPTH (sv);
116 if (depth) 164 if (GvGP (sv))
117 { 165 {
118 AV *padlist = CvPADLIST (sv); 166 if (GvSV (sv) == (SV *)targ) res_gv ('$');
119 while (depth) 167 if (GvAV (sv) == (AV *)targ) res_gv ('@');
168 if (GvHV (sv) == (HV *)targ) res_gv ('%');
169 if (GvCV (sv) == (CV *)targ) res_gv ('&');
120 { 170 }
121 AV *pad = (AV *)AvARRAY (padlist)[depth];
122 av_push (excl, newSVuv (PTR2UV (pad))); /* exclude pads from being found */
123 for (i = AvFILLp (pad); i--; )
124 if (AvARRAY (pad)[i] == targ)
125 res_pair (form ("in the lexical '%s' in", SvPVX (AvARRAY (AvARRAY (padlist)[0])[i])));
126 171
127 --depth;
128 }
129 }
130 }
131 break; 172 break;
132
133 case SVt_PVGV:
134 if (GvGP (sv))
135 {
136 if (GvSV (sv) == targ)
137 res_gv ('$');
138 if (GvAV (sv) == (AV *)targ)
139 res_gv ('@');
140 if (GvHV (sv) == (HV *)targ)
141 res_gv ('%');
142 if (GvCV (sv) == (CV *)targ)
143 res_gv ('&');
144 }
145 break;
146 } 173 }
147 174
148 if (rmagical) 175 if (rmagical)
149 SvRMAGICAL_off (sv); 176 SvRMAGICAL_on (sv);
150 } 177 }
151 } 178 }
152 179
153 EXTEND (SP, 2); 180 EXTEND (SP, 2);
154 PUSHs (sv_2mortal (newRV_noinc ((SV *)about))); 181 PUSHs (sv_2mortal (newRV_noinc ((SV *)about)));

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