| 1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
| 2 | #include "perl.h" |
2 | #include "perl.h" |
| 3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
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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 |
| 4 | |
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)); \ |
| … | |
… | |
| 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 | { |
| … | |
… | |
| 52 | /* Remember that the zeroth slot is used as the pointer onwards, so don't |
62 | /* Remember that the zeroth slot is used as the pointer onwards, so don't |
| 53 | include it. */ |
63 | include it. */ |
| 54 | while (--idx > 0) |
64 | while (--idx > 0) |
| 55 | { |
65 | { |
| 56 | SV *sv = &arena [idx]; |
66 | SV *sv = &arena [idx]; |
| 57 | |
67 | |
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68 | if (SvTYPE (sv) >= SVt_LAST) |
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69 | continue; |
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70 | |
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71 | /* temporarily disable RMAGICAL, it can easily interfere with us */ |
| 58 | if ((rmagical = SvRMAGICAL (sv))) |
72 | if ((rmagical = SvRMAGICAL (sv))) |
| 59 | SvRMAGICAL_off (sv); |
73 | SvRMAGICAL_off (sv); |
| 60 | |
74 | |
| 61 | //TODO: magic |
75 | if (SvTYPE (sv) >= SVt_PVMG) |
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76 | { |
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77 | MAGIC *mg = SvMAGIC (sv); |
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78 | while (mg) |
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79 | { |
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80 | if (mg->mg_obj == targ) |
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81 | res_pair (form ("referenced (in mg_obj) by '%c' type magic attached to", mg->mg_type)); |
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82 | if ((SV *)mg->mg_ptr == targ && mg->mg_flags & MGf_REFCOUNTED) |
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83 | res_pair (form ("referenced (in mg_ptr) by '%c' type magic attached to", mg->mg_type)); |
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84 | |
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85 | mg = mg->mg_moremagic; |
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86 | } |
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87 | } |
| 62 | |
88 | |
| 63 | switch (SvTYPE (sv)) |
89 | switch (SvTYPE (sv)) |
| 64 | { |
90 | { |
| 65 | case SVt_RV: |
91 | case SVt_RV: |
| 66 | if (sv != target && SvRV (sv) == targ) |
92 | if (sv != target && SvRV (sv) == targ) |
| … | |
… | |
| 82 | if (HeVAL (he) == targ) |
108 | if (HeVAL (he) == targ) |
| 83 | res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); |
109 | res_pair (form ("in the member '%.*s' of", HeKLEN (he), HeKEY (he))); |
| 84 | } |
110 | } |
| 85 | break; |
111 | break; |
| 86 | |
112 | |
| 87 | case SVt_PVGV: |
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| 88 | if (GvGP (sv)) |
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| 89 | { |
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| 90 | if (GvSV (sv) == targ) |
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| 91 | res_gv ('$'); |
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| 92 | if (GvAV (sv) == (AV *)targ) |
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| 93 | res_gv ('@'); |
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| 94 | if (GvHV (sv) == (HV *)targ) |
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| 95 | res_gv ('%'); |
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| 96 | if (GvCV (sv) == (CV *)targ) |
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| 97 | res_gv ('&'); |
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| 98 | } |
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| 99 | break; |
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| 100 | |
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| 101 | case SVt_PVCV: |
113 | case SVt_PVCV: |
| 102 | { |
114 | { |
| 103 | int depth = CvDEPTH (sv); |
115 | int depth = CvDEPTH (sv); |
| 104 | if (depth) |
116 | if (depth) |
| 105 | { |
117 | { |
| … | |
… | |
| 115 | --depth; |
127 | --depth; |
| 116 | } |
128 | } |
| 117 | } |
129 | } |
| 118 | } |
130 | } |
| 119 | break; |
131 | break; |
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132 | |
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133 | case SVt_PVGV: |
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134 | if (GvGP (sv)) |
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135 | { |
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136 | if (GvSV (sv) == targ) |
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137 | res_gv ('$'); |
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138 | if (GvAV (sv) == (AV *)targ) |
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139 | res_gv ('@'); |
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140 | if (GvHV (sv) == (HV *)targ) |
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141 | res_gv ('%'); |
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142 | if (GvCV (sv) == (CV *)targ) |
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143 | res_gv ('&'); |
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144 | } |
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145 | break; |
| 120 | } |
146 | } |
| 121 | |
147 | |
| 122 | if (rmagical) |
148 | if (rmagical) |
| 123 | SvRMAGICAL_off (sv); |
149 | SvRMAGICAL_off (sv); |
| 124 | } |
150 | } |
