1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #define res_pair(text) \ |
5 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
6 | { \ |
6 | (PERL_REVISION > (a) \ |
7 | AV *av = newAV (); \ |
7 | || (PERL_REVISION == (a) \ |
8 | av_push (av, newSVpv (text, 0)); \ |
8 | && (PERL_VERSION > (b) \ |
9 | av_push (av, newRV_inc (sv)); \ |
9 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
10 | av_push (about, newRV_noinc ((SV *)av)); \ |
|
|
11 | } |
|
|
12 | |
10 | |
13 | #define res_gv(sigil) \ |
11 | #if !PERL_VERSION_ATLEAST (5,8,9) |
|
|
12 | # define SVt_LAST 16 |
|
|
13 | #endif |
|
|
14 | |
|
|
15 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
16 | # define SvPAD_OUR(dummy) 0 |
|
|
17 | #endif |
|
|
18 | |
|
|
19 | #define res_pair(text) \ |
14 | { \ |
20 | do { \ |
15 | AV *av = newAV (); \ |
21 | AV *av = newAV (); \ |
|
|
22 | av_push (av, newSVpv (text, 0)); \ |
|
|
23 | if (rmagical) SvRMAGICAL_on (sv); \ |
|
|
24 | av_push (av, sv_rvweaken (newRV_inc (sv))); \ |
|
|
25 | if (rmagical) SvRMAGICAL_off (sv); \ |
|
|
26 | av_push (about, newRV_noinc ((SV *)av)); \ |
|
|
27 | } while (0) |
|
|
28 | |
|
|
29 | #define res_gv(sigil) \ |
|
|
30 | do { \ |
|
|
31 | AV *av = newAV (); \ |
16 | av_push (av, newSVpv (form ("in the global %c%s::%.*s", sigil, \ |
32 | av_push (av, newSVpv (form ("in the global %c%s::%.*s", sigil, \ |
17 | HvNAME (GvSTASH (sv)), \ |
33 | HvNAME (GvSTASH (sv)), \ |
18 | GvNAMELEN (sv), GvNAME (sv) ? GvNAME (sv) : "<anonymous>"), \ |
34 | GvNAMELEN (sv), GvNAME (sv) ? GvNAME (sv) : "<anonymous>"), \ |
19 | 0)); \ |
35 | 0)); \ |
20 | av_push (about, newRV_noinc ((SV *)av)); \ |
36 | av_push (about, newRV_noinc ((SV *)av)); \ |
21 | } |
37 | } while (0) |
22 | |
38 | |
23 | MODULE = Devel::FindRef PACKAGE = Devel::FindRef |
39 | MODULE = Devel::FindRef PACKAGE = Devel::FindRef |
24 | |
40 | |
25 | PROTOTYPES: ENABLE |
41 | PROTOTYPES: ENABLE |
26 | |
42 | |
… | |
… | |
34 | void |
50 | void |
35 | find_ (SV *target) |
51 | find_ (SV *target) |
36 | PPCODE: |
52 | PPCODE: |
37 | { |
53 | { |
38 | SV *arena, *targ; |
54 | SV *arena, *targ; |
39 | int rmagical, i; |
55 | U32 rmagical; |
|
|
56 | int i; |
40 | AV *about = newAV (); |
57 | AV *about = newAV (); |
41 | AV *excl = newAV (); |
58 | AV *excl = newAV (); |
42 | |
59 | |
43 | if (!SvROK (target)) |
60 | if (!SvROK (target)) |
44 | croak ("about expects a reference to a perl value"); |
61 | croak ("find expects a reference to a perl value"); |
45 | |
62 | |
46 | targ = SvRV (target); |
63 | targ = SvRV (target); |
47 | |
64 | |
48 | for (arena = PL_sv_arenaroot; arena; arena = SvANY (arena)) |
65 | for (arena = PL_sv_arenaroot; arena; arena = SvANY (arena)) |
49 | { |
66 | { |
… | |
… | |
62 | if ((rmagical = SvRMAGICAL (sv))) |
79 | if ((rmagical = SvRMAGICAL (sv))) |
63 | SvRMAGICAL_off (sv); |
80 | SvRMAGICAL_off (sv); |
64 | |
81 | |
65 | if (SvTYPE (sv) >= SVt_PVMG) |
82 | if (SvTYPE (sv) >= SVt_PVMG) |
66 | { |
83 | { |
67 | MAGIC *mg = SvMAGIC (sv); |
84 | |
68 | while (mg) |
85 | if (SvTYPE (sv) != SVt_PVMG || SvPAD_OUR (sv)) |
69 | { |
86 | { |
70 | if (mg->mg_obj == targ) |
87 | MAGIC *mg = SvMAGIC (sv); |
71 | res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type)); |
|
|
72 | if ((SV *)mg->mg_ptr == targ && mg->mg_flags & MGf_REFCOUNTED) |
|
|
73 | res_pair (form ("referenced (in mg_ptr) by '%c' type magic attached to", mg->mg_type)); |
|
|
74 | |
88 | |
|
|
89 | while (mg) |
|
|
90 | { |
|
|
91 | if (mg->mg_obj == targ) |
|
|
92 | res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type)); |
|
|
93 | |
|
|
94 | if ((SV *)mg->mg_ptr == targ && mg->mg_flags & MGf_REFCOUNTED) |
|
|
95 | res_pair (form ("referenced (in mg_ptr) by '%c' type magic attached to", mg->mg_type)); |
|
|
96 | |
75 | mg = mg->mg_moremagic; |
97 | mg = mg->mg_moremagic; |
|
|
98 | } |
76 | } |
99 | } |
77 | } |
100 | } |
78 | |
101 | |
79 | switch (SvTYPE (sv)) |
102 | if (SvROK (sv)) |
80 | { |
103 | { |
81 | case SVt_RV: |
|
|
82 | if (sv != target && SvRV (sv) == targ) |
104 | if (sv != target && SvRV (sv) == targ && !SvWEAKREF (sv)) |
83 | res_pair ("referenced by"); |
105 | res_pair ("referenced by"); |
|
|
106 | } |
|
|
107 | else |
|
|
108 | switch (SvTYPE (sv)) |
84 | break; |
109 | { |
|
|
110 | case SVt_PVAV: |
|
|
111 | if (AvREAL (sv)) |
|
|
112 | for (i = AvFILLp (sv) + 1; i--; ) |
|
|
113 | if (AvARRAY (sv)[i] == targ) |
|
|
114 | res_pair (form ("in array element %d of", i)); |
85 | |
115 | |
86 | case SVt_PVAV: |
|
|
87 | if (AvREAL (sv)) |
|
|
88 | for (i = AvFILLp (sv) + 1; i--; ) |
|
|
89 | if (AvARRAY (sv)[i] == targ) |
|
|
90 | res_pair (form ("in array element %d of", i)); |
|
|
91 | break; |
116 | break; |
92 | |
117 | |
93 | case SVt_PVHV: |
118 | case SVt_PVHV: |
94 | if (hv_iterinit ((HV *)sv)) |
119 | if (hv_iterinit ((HV *)sv)) |
|
|
120 | { |
|
|
121 | HE *he; |
|
|
122 | |
|
|
123 | while ((he = hv_iternext ((HV *)sv))) |
|
|
124 | if (HeVAL (he) == targ) |
|
|
125 | res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); |
|
|
126 | } |
|
|
127 | |
|
|
128 | break; |
|
|
129 | |
|
|
130 | case SVt_PVCV: |
95 | { |
131 | { |
|
|
132 | int depth = CvDEPTH (sv); |
|
|
133 | |
|
|
134 | /* Anonymous subs have a padlist but zero depth */ |
|
|
135 | if (!depth && CvPADLIST (sv)) |
|
|
136 | depth = 1; |
|
|
137 | |
|
|
138 | if (depth) |
96 | HE *he; |
139 | { |
97 | while ((he = hv_iternext ((HV *)sv))) |
140 | AV *padlist = CvPADLIST (sv); |
|
|
141 | |
|
|
142 | while (depth) |
|
|
143 | { |
|
|
144 | AV *pad = (AV *)AvARRAY (padlist)[depth]; |
|
|
145 | |
|
|
146 | av_push (excl, newSVuv (PTR2UV (pad))); /* exclude pads themselves from being found */ |
|
|
147 | |
|
|
148 | for (i = AvFILLp (pad) + 1; i--; ) |
98 | if (HeVAL (he) == targ) |
149 | if (AvARRAY (pad)[i] == targ) |
99 | res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); |
150 | { |
|
|
151 | /* Values from constant functions are stored in the pad without any name */ |
|
|
152 | SV *name_sv = AvARRAY (AvARRAY (padlist)[0])[i]; |
|
|
153 | |
|
|
154 | if (name_sv && SvPOK (name_sv)) |
|
|
155 | res_pair (form ("in the lexical '%s' in", SvPVX (name_sv))); |
|
|
156 | else |
|
|
157 | res_pair ("in an unnamed lexical in"); |
|
|
158 | } |
|
|
159 | |
|
|
160 | --depth; |
|
|
161 | } |
|
|
162 | } |
|
|
163 | |
|
|
164 | if (CvCONST (sv) && (SV*)CvXSUBANY (sv).any_ptr == targ) |
|
|
165 | res_pair ("the constant value of"); |
|
|
166 | |
|
|
167 | if (!CvWEAKOUTSIDE (sv) && (SV*)CvOUTSIDE (sv) == targ) |
|
|
168 | res_pair ("the containing scope for"); |
100 | } |
169 | } |
101 | break; |
|
|
102 | |
170 | |
|
|
171 | break; |
|
|
172 | |
103 | case SVt_PVCV: |
173 | case SVt_PVGV: |
104 | { |
|
|
105 | int depth = CvDEPTH (sv); |
|
|
106 | if (depth) |
174 | if (GvGP (sv)) |
107 | { |
175 | { |
108 | AV *padlist = CvPADLIST (sv); |
176 | if (GvSV (sv) == (SV *)targ) res_gv ('$'); |
109 | while (depth) |
177 | if (GvAV (sv) == (AV *)targ) res_gv ('@'); |
|
|
178 | if (GvHV (sv) == (HV *)targ) res_gv ('%'); |
|
|
179 | if (GvCV (sv) == (CV *)targ) res_gv ('&'); |
110 | { |
180 | } |
111 | AV *pad = (AV *)AvARRAY (padlist)[depth]; |
|
|
112 | av_push (excl, newSVuv (PTR2UV (pad))); /* exclude pads from being found */ |
|
|
113 | for (i = AvFILLp (pad); i--; ) |
|
|
114 | if (AvARRAY (pad)[i] == targ) |
|
|
115 | res_pair (form ("in the lexical '%s' in", SvPVX (AvARRAY (AvARRAY (padlist)[0])[i]))); |
|
|
116 | |
181 | |
117 | --depth; |
|
|
118 | } |
|
|
119 | } |
|
|
120 | } |
|
|
121 | break; |
182 | break; |
122 | |
|
|
123 | case SVt_PVGV: |
|
|
124 | if (GvGP (sv)) |
|
|
125 | { |
|
|
126 | if (GvSV (sv) == targ) |
|
|
127 | res_gv ('$'); |
|
|
128 | if (GvAV (sv) == (AV *)targ) |
|
|
129 | res_gv ('@'); |
|
|
130 | if (GvHV (sv) == (HV *)targ) |
|
|
131 | res_gv ('%'); |
|
|
132 | if (GvCV (sv) == (CV *)targ) |
|
|
133 | res_gv ('&'); |
|
|
134 | } |
|
|
135 | break; |
|
|
136 | } |
183 | } |
137 | |
184 | |
138 | if (rmagical) |
185 | if (rmagical) |
139 | SvRMAGICAL_off (sv); |
186 | SvRMAGICAL_on (sv); |
140 | } |
187 | } |
141 | } |
188 | } |
142 | |
189 | |
143 | EXTEND (SP, 2); |
190 | EXTEND (SP, 2); |
144 | PUSHs (sv_2mortal (newRV_noinc ((SV *)about))); |
191 | PUSHs (sv_2mortal (newRV_noinc ((SV *)about))); |