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 | |
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5 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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6 | (PERL_REVISION > (a) \ |
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7 | || (PERL_REVISION == (a) \ |
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8 | && (PERL_VERSION > (b) \ |
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9 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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10 | |
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11 | #if !PERL_VERSION_ATLEAST (5,8,9) |
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12 | # define SVt_LAST 16 |
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13 | #endif |
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14 | |
5 | #define res_pair(text) \ |
15 | #define res_pair(text) \ |
6 | { \ |
16 | { \ |
7 | AV *av = newAV (); \ |
17 | AV *av = newAV (); \ |
8 | av_push (av, newSVpv (text, 0)); \ |
18 | av_push (av, newSVpv (text, 0)); \ |
9 | av_push (av, newRV_inc (sv)); \ |
19 | av_push (av, sv_rvweaken (newRV_inc (sv))); \ |
10 | av_push (about, newRV_noinc ((SV *)av)); \ |
20 | av_push (about, newRV_noinc ((SV *)av)); \ |
11 | } |
21 | } |
12 | |
22 | |
13 | #define res_gv(sigil) \ |
23 | #define res_gv(sigil) \ |
14 | { \ |
24 | { \ |
15 | AV *av = newAV (); \ |
25 | AV *av = newAV (); \ |
16 | av_push (av, newSVpv (form ("in the global %c%s::%.*s", sigil, \ |
26 | av_push (av, newSVpv (form ("in the global %c%s::%.*s", sigil, \ |
17 | HvNAME (GvSTASH (sv)), \ |
27 | HvNAME (GvSTASH (sv)), \ |
18 | GvNAMELEN (sv), GvNAME (sv) ? GvNAME (sv) : "<anonymous>"), \ |
28 | GvNAMELEN (sv), GvNAME (sv) ? GvNAME (sv) : "<anonymous>"), \ |
19 | 0)); \ |
29 | 0)); \ |
20 | av_push (about, newRV_noinc ((SV *)av)); \ |
30 | av_push (about, newRV_noinc ((SV *)av)); \ |
21 | } |
31 | } |
22 | |
32 | |
23 | MODULE = Devel::FindRef PACKAGE = Devel::FindRef |
33 | MODULE = Devel::FindRef PACKAGE = Devel::FindRef |
24 | |
34 | |
25 | PROTOTYPES: ENABLE |
35 | PROTOTYPES: ENABLE |
… | |
… | |
39 | int rmagical, i; |
49 | int rmagical, i; |
40 | AV *about = newAV (); |
50 | AV *about = newAV (); |
41 | AV *excl = newAV (); |
51 | AV *excl = newAV (); |
42 | |
52 | |
43 | if (!SvROK (target)) |
53 | if (!SvROK (target)) |
44 | croak ("about expects a reference to a perl value"); |
54 | croak ("find expects a reference to a perl value"); |
45 | |
55 | |
46 | targ = SvRV (target); |
56 | targ = SvRV (target); |
47 | |
57 | |
48 | for (arena = PL_sv_arenaroot; arena; arena = SvANY (arena)) |
58 | for (arena = PL_sv_arenaroot; arena; arena = SvANY (arena)) |
49 | { |
59 | { |
… | |
… | |
67 | MAGIC *mg = SvMAGIC (sv); |
77 | MAGIC *mg = SvMAGIC (sv); |
68 | while (mg) |
78 | while (mg) |
69 | { |
79 | { |
70 | if (mg->mg_obj == targ) |
80 | if (mg->mg_obj == targ) |
71 | res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type)); |
81 | res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type)); |
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82 | |
72 | if ((SV *)mg->mg_ptr == targ && mg->mg_flags & MGf_REFCOUNTED) |
83 | 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)); |
84 | res_pair (form ("referenced (in mg_ptr) by '%c' type magic attached to", mg->mg_type)); |
74 | |
85 | |
75 | mg = mg->mg_moremagic; |
86 | mg = mg->mg_moremagic; |
76 | } |
87 | } |
77 | } |
88 | } |
78 | |
89 | |
79 | switch (SvTYPE (sv)) |
90 | if (SvROK (sv)) |
80 | { |
91 | { |
81 | case SVt_RV: |
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82 | if (sv != target && SvRV (sv) == targ) |
92 | if (sv != target && SvRV (sv) == targ && !SvWEAKREF (sv)) |
83 | res_pair ("referenced by"); |
93 | res_pair ("referenced by"); |
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94 | } |
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95 | else |
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96 | switch (SvTYPE (sv)) |
84 | break; |
97 | { |
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98 | case SVt_PVAV: |
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99 | if (AvREAL (sv)) |
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100 | for (i = AvFILLp (sv) + 1; i--; ) |
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101 | if (AvARRAY (sv)[i] == targ) |
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102 | res_pair (form ("in array element %d of", i)); |
85 | |
103 | |
86 | case SVt_PVAV: |
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87 | if (AvREAL (sv)) |
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88 | for (i = AvFILLp (sv) + 1; i--; ) |
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89 | if (AvARRAY (sv)[i] == targ) |
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90 | res_pair (form ("in array element %d of", i)); |
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91 | break; |
104 | break; |
92 | |
105 | |
93 | case SVt_PVHV: |
106 | case SVt_PVHV: |
94 | if (hv_iterinit ((HV *)sv)) |
107 | if (hv_iterinit ((HV *)sv)) |
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108 | { |
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109 | HE *he; |
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110 | |
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111 | while ((he = hv_iternext ((HV *)sv))) |
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112 | if (HeVAL (he) == targ) |
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113 | res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); |
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114 | } |
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115 | |
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116 | break; |
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117 | |
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118 | case SVt_PVCV: |
95 | { |
119 | { |
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120 | int depth = CvDEPTH (sv); |
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121 | |
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122 | if (depth) |
96 | HE *he; |
123 | { |
97 | while ((he = hv_iternext ((HV *)sv))) |
124 | AV *padlist = CvPADLIST (sv); |
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125 | |
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126 | while (depth) |
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127 | { |
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128 | AV *pad = (AV *)AvARRAY (padlist)[depth]; |
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129 | |
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130 | av_push (excl, newSVuv (PTR2UV (pad))); /* exclude pads themselves from being found */ |
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131 | |
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132 | for (i = AvFILLp (pad); i--; ) |
98 | if (HeVAL (he) == targ) |
133 | if (AvARRAY (pad)[i] == targ) |
99 | res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); |
134 | res_pair (form ("in the lexical '%s' in", SvPVX (AvARRAY (AvARRAY (padlist)[0])[i]))); |
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135 | |
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136 | --depth; |
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137 | } |
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138 | } |
100 | } |
139 | } |
101 | break; |
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102 | |
140 | |
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141 | break; |
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142 | |
103 | case SVt_PVCV: |
143 | case SVt_PVGV: |
104 | { |
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105 | int depth = CvDEPTH (sv); |
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106 | if (depth) |
144 | if (GvGP (sv)) |
107 | { |
145 | { |
108 | AV *padlist = CvPADLIST (sv); |
146 | if (GvSV (sv) == (SV *)targ) res_gv ('$'); |
109 | while (depth) |
147 | if (GvAV (sv) == (AV *)targ) res_gv ('@'); |
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148 | if (GvHV (sv) == (HV *)targ) res_gv ('%'); |
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149 | if (GvCV (sv) == (CV *)targ) res_gv ('&'); |
110 | { |
150 | } |
111 | AV *pad = (AV *)AvARRAY (padlist)[depth]; |
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112 | av_push (excl, newSVuv (PTR2UV (pad))); /* exclude pads from being found */ |
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113 | for (i = AvFILLp (pad); i--; ) |
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114 | if (AvARRAY (pad)[i] == targ) |
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115 | res_pair (form ("in the lexical '%s' in", SvPVX (AvARRAY (AvARRAY (padlist)[0])[i]))); |
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116 | |
151 | |
117 | --depth; |
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118 | } |
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119 | } |
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120 | } |
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121 | break; |
152 | break; |
122 | |
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123 | case SVt_PVGV: |
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124 | if (GvGP (sv)) |
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125 | { |
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126 | if (GvSV (sv) == targ) |
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127 | res_gv ('$'); |
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128 | if (GvAV (sv) == (AV *)targ) |
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129 | res_gv ('@'); |
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130 | if (GvHV (sv) == (HV *)targ) |
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131 | res_gv ('%'); |
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132 | if (GvCV (sv) == (CV *)targ) |
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133 | res_gv ('&'); |
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134 | } |
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135 | break; |
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136 | } |
153 | } |
137 | |
154 | |
138 | if (rmagical) |
155 | if (rmagical) |
139 | SvRMAGICAL_off (sv); |
156 | SvRMAGICAL_on (sv); |
140 | } |
157 | } |
141 | } |
158 | } |
142 | |
159 | |
143 | EXTEND (SP, 2); |
160 | EXTEND (SP, 2); |
144 | PUSHs (sv_2mortal (newRV_noinc ((SV *)about))); |
161 | PUSHs (sv_2mortal (newRV_noinc ((SV *)about))); |