Commit | Line | Data |
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1 | #define NEED_newRV_noinc_GLOBAL |
2 | #define NEED_sv_2pv_flags_GLOBAL |
3 | #define NEED_sv_2pv_nolen_GLOBAL |
4 | #define NEED_newSVpvn_flags_GLOBAL |
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5 | #include "mop.h" |
6 | |
7 | void |
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8 | mop_call_xs (pTHX_ XSPROTO(subaddr), CV *cv, SV **mark) |
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9 | { |
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10 | dSP; |
11 | PUSHMARK(mark); |
12 | (*subaddr)(aTHX_ cv); |
13 | PUTBACK; |
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14 | } |
15 | |
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16 | #if PERL_BCDVERSION >= 0x5010000 |
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17 | UV |
18 | mop_check_package_cache_flag (pTHX_ HV *stash) |
19 | { |
20 | assert(SvTYPE(stash) == SVt_PVHV); |
21 | |
22 | /* here we're trying to implement a c version of mro::get_pkg_gen($stash), |
23 | * however the perl core doesn't make it easy for us. It doesn't provide an |
24 | * api that just does what we want. |
25 | * |
26 | * However, we know that the information we want is, inside the core, |
27 | * available using HvMROMETA(stash)->pkg_gen. Unfortunately, although the |
28 | * HvMROMETA macro is public, it is implemented using Perl_mro_meta_init, |
29 | * which is not public and only available inside the core, as the mro |
30 | * interface as well as the structure returned by mro_meta_init isn't |
31 | * considered to be stable yet. |
32 | * |
33 | * Perl_mro_meta_init isn't declared static, so we could just define it |
34 | * ourselfs if perls headers don't do that for us, except that won't work |
35 | * on platforms where symbols need to be explicitly exported when linking |
36 | * shared libraries. |
37 | * |
38 | * So our, hopefully temporary, solution is to be even more evil and |
39 | * basically reimplement HvMROMETA in a very fragile way that'll blow up |
40 | * when the relevant parts of the mro implementation in core change. |
41 | * |
42 | * :-( |
43 | * |
44 | */ |
45 | |
46 | return HvAUX(stash)->xhv_mro_meta |
47 | ? HvAUX(stash)->xhv_mro_meta->pkg_gen |
48 | : 0; |
49 | } |
50 | |
51 | #else /* pre 5.10.0 */ |
52 | |
53 | UV |
54 | mop_check_package_cache_flag (pTHX_ HV *stash) |
55 | { |
56 | PERL_UNUSED_ARG(stash); |
57 | assert(SvTYPE(stash) == SVt_PVHV); |
58 | |
59 | return PL_sub_generation; |
60 | } |
61 | #endif |
62 | |
63 | SV * |
64 | mop_call0 (pTHX_ SV *const self, SV *const method) |
65 | { |
66 | dSP; |
67 | SV *ret; |
68 | |
69 | PUSHMARK(SP); |
70 | XPUSHs(self); |
71 | PUTBACK; |
72 | |
73 | call_sv(method, G_SCALAR | G_METHOD); |
74 | |
75 | SPAGAIN; |
76 | ret = POPs; |
77 | PUTBACK; |
78 | |
79 | return ret; |
80 | } |
81 | |
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82 | SV * |
83 | mop_call1 (pTHX_ SV *const self, SV *const method, SV* const arg1) |
84 | { |
85 | dSP; |
86 | SV *ret; |
87 | |
88 | PUSHMARK(SP); |
89 | EXTEND(SP, 2); |
90 | PUSHs(self); |
91 | PUSHs(arg1); |
92 | PUTBACK; |
93 | |
94 | call_sv(method, G_SCALAR | G_METHOD); |
95 | |
96 | SPAGAIN; |
97 | ret = POPs; |
98 | PUTBACK; |
99 | |
100 | return ret; |
101 | } |
102 | |
103 | |
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104 | int |
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105 | mop_get_code_info (SV *coderef, char **pkg, char **name) |
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106 | { |
107 | if (!SvOK(coderef) || !SvROK(coderef) || SvTYPE(SvRV(coderef)) != SVt_PVCV) { |
108 | return 0; |
109 | } |
110 | |
111 | coderef = SvRV(coderef); |
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112 | |
113 | /* sub is still being compiled */ |
114 | if (!CvGV(coderef)) { |
115 | return 0; |
116 | } |
117 | |
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118 | /* I think this only gets triggered with a mangled coderef, but if |
119 | we hit it without the guard, we segfault. The slightly odd return |
120 | value strikes me as an improvement (mst) |
121 | */ |
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122 | |
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123 | if ( isGV_with_GP(CvGV(coderef)) ) { |
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124 | GV *gv = CvGV(coderef); |
125 | *pkg = HvNAME( GvSTASH(gv) ? GvSTASH(gv) : CvSTASH(coderef) ); |
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126 | *name = GvNAME( CvGV(coderef) ); |
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127 | } else { |
128 | *pkg = "__UNKNOWN__"; |
129 | *name = "__ANON__"; |
130 | } |
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131 | |
132 | return 1; |
133 | } |
134 | |
135 | void |
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136 | mop_get_package_symbols (HV *stash, type_filter_t filter, get_package_symbols_cb_t cb, void *ud) |
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137 | { |
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138 | dTHX; |
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139 | HE *he; |
140 | |
141 | (void)hv_iterinit(stash); |
142 | |
143 | if (filter == TYPE_FILTER_NONE) { |
144 | while ( (he = hv_iternext(stash)) ) { |
145 | STRLEN keylen; |
146 | const char *key = HePV(he, keylen); |
147 | if (!cb(key, keylen, HeVAL(he), ud)) { |
148 | return; |
149 | } |
150 | } |
151 | return; |
152 | } |
153 | |
154 | while ( (he = hv_iternext(stash)) ) { |
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155 | GV * const gv = (GV*)HeVAL(he); |
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156 | STRLEN keylen; |
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157 | const char * const key = HePV(he, keylen); |
158 | SV *sv = NULL; |
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159 | |
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160 | if(isGV(gv)){ |
161 | switch (filter) { |
162 | case TYPE_FILTER_CODE: sv = (SV *)GvCVu(gv); break; |
163 | case TYPE_FILTER_ARRAY: sv = (SV *)GvAV(gv); break; |
164 | case TYPE_FILTER_IO: sv = (SV *)GvIO(gv); break; |
165 | case TYPE_FILTER_HASH: sv = (SV *)GvHV(gv); break; |
166 | case TYPE_FILTER_SCALAR: sv = (SV *)GvSV(gv); break; |
167 | default: |
168 | croak("Unknown type"); |
169 | } |
170 | } |
171 | /* expand the gv into a real typeglob if it |
172 | * contains stub functions or constants and we |
173 | * were asked to return CODE references */ |
174 | else if (filter == TYPE_FILTER_CODE) { |
175 | gv_init(gv, stash, key, keylen, GV_ADDMULTI); |
176 | sv = (SV *)GvCV(gv); |
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177 | } |
178 | |
179 | if (sv) { |
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180 | if (!cb(key, keylen, sv, ud)) { |
181 | return; |
182 | } |
183 | } |
184 | } |
185 | } |
186 | |
187 | static bool |
188 | collect_all_symbols (const char *key, STRLEN keylen, SV *val, void *ud) |
189 | { |
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190 | dTHX; |
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191 | HV *hash = (HV *)ud; |
192 | |
193 | if (!hv_store (hash, key, keylen, newRV_inc(val), 0)) { |
194 | croak("failed to store symbol ref"); |
195 | } |
196 | |
197 | return TRUE; |
198 | } |
199 | |
200 | HV * |
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201 | mop_get_all_package_symbols (HV *stash, type_filter_t filter) |
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202 | { |
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203 | dTHX; |
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204 | HV *ret = newHV (); |
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205 | mop_get_package_symbols (stash, filter, collect_all_symbols, ret); |
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206 | return ret; |
207 | } |
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208 | |
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209 | |
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210 | MAGIC* |
211 | mop_mg_find(pTHX_ SV* const sv, const MGVTBL* const vtbl, I32 const flags){ |
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212 | MAGIC* mg; |
213 | |
214 | assert(sv != NULL); |
215 | for(mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic){ |
216 | if(mg->mg_virtual == vtbl){ |
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217 | return mg; |
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218 | } |
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219 | } |
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220 | |
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221 | if(flags & MOPf_DIE_ON_FAIL){ |
222 | croak("mop_mg_find: no MAGIC found for %"SVf, sv_2mortal(newRV_inc(sv))); |
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223 | } |
224 | return NULL; |
225 | } |