Commit | Line | Data |
d846ade3 |
1 | #include "mop.h" |
2 | |
3 | void |
1be56175 |
4 | mop_call_xs (pTHX_ XSPROTO(subaddr), CV *cv, SV **mark) |
d846ade3 |
5 | { |
e3dcef7f |
6 | dSP; |
7 | PUSHMARK(mark); |
8 | (*subaddr)(aTHX_ cv); |
9 | PUTBACK; |
d846ade3 |
10 | } |
11 | |
12 | #if PERL_VERSION >= 10 |
13 | UV |
14 | mop_check_package_cache_flag (pTHX_ HV *stash) |
15 | { |
16 | assert(SvTYPE(stash) == SVt_PVHV); |
17 | |
18 | /* here we're trying to implement a c version of mro::get_pkg_gen($stash), |
19 | * however the perl core doesn't make it easy for us. It doesn't provide an |
20 | * api that just does what we want. |
21 | * |
22 | * However, we know that the information we want is, inside the core, |
23 | * available using HvMROMETA(stash)->pkg_gen. Unfortunately, although the |
24 | * HvMROMETA macro is public, it is implemented using Perl_mro_meta_init, |
25 | * which is not public and only available inside the core, as the mro |
26 | * interface as well as the structure returned by mro_meta_init isn't |
27 | * considered to be stable yet. |
28 | * |
29 | * Perl_mro_meta_init isn't declared static, so we could just define it |
30 | * ourselfs if perls headers don't do that for us, except that won't work |
31 | * on platforms where symbols need to be explicitly exported when linking |
32 | * shared libraries. |
33 | * |
34 | * So our, hopefully temporary, solution is to be even more evil and |
35 | * basically reimplement HvMROMETA in a very fragile way that'll blow up |
36 | * when the relevant parts of the mro implementation in core change. |
37 | * |
38 | * :-( |
39 | * |
40 | */ |
41 | |
42 | return HvAUX(stash)->xhv_mro_meta |
43 | ? HvAUX(stash)->xhv_mro_meta->pkg_gen |
44 | : 0; |
45 | } |
46 | |
47 | #else /* pre 5.10.0 */ |
48 | |
49 | UV |
50 | mop_check_package_cache_flag (pTHX_ HV *stash) |
51 | { |
52 | PERL_UNUSED_ARG(stash); |
53 | assert(SvTYPE(stash) == SVt_PVHV); |
54 | |
55 | return PL_sub_generation; |
56 | } |
57 | #endif |
58 | |
59 | SV * |
60 | mop_call0 (pTHX_ SV *const self, SV *const method) |
61 | { |
62 | dSP; |
63 | SV *ret; |
64 | |
65 | PUSHMARK(SP); |
66 | XPUSHs(self); |
67 | PUTBACK; |
68 | |
69 | call_sv(method, G_SCALAR | G_METHOD); |
70 | |
71 | SPAGAIN; |
72 | ret = POPs; |
73 | PUTBACK; |
74 | |
75 | return ret; |
76 | } |
77 | |
78 | int |
e1f52a8a |
79 | mop_get_code_info (SV *coderef, char **pkg, char **name) |
d846ade3 |
80 | { |
ca212610 |
81 | GV *gv; |
82 | |
d846ade3 |
83 | if (!SvOK(coderef) || !SvROK(coderef) || SvTYPE(SvRV(coderef)) != SVt_PVCV) { |
84 | return 0; |
85 | } |
86 | |
87 | coderef = SvRV(coderef); |
caa6b5cd |
88 | |
89 | /* sub is still being compiled */ |
90 | if (!CvGV(coderef)) { |
91 | return 0; |
92 | } |
93 | |
d846ade3 |
94 | /* I think this only gets triggered with a mangled coderef, but if |
95 | we hit it without the guard, we segfault. The slightly odd return |
96 | value strikes me as an improvement (mst) |
97 | */ |
9b52bbf1 |
98 | |
d846ade3 |
99 | if ( isGV_with_GP(CvGV(coderef)) ) { |
ca212610 |
100 | gv = CvGV(coderef); |
101 | *pkg = HvNAME( GvSTASH(gv) ? GvSTASH(gv) : CvSTASH(coderef) ); |
102 | *name = GvNAME( CvGV(coderef) ); |
d846ade3 |
103 | } else { |
ca212610 |
104 | *pkg = "__UNKNOWN__"; |
105 | *name = "__ANON__"; |
d846ade3 |
106 | } |
d846ade3 |
107 | |
108 | return 1; |
109 | } |
110 | |
111 | void |
e1f52a8a |
112 | mop_get_package_symbols (HV *stash, type_filter_t filter, get_package_symbols_cb_t cb, void *ud) |
d846ade3 |
113 | { |
114 | HE *he; |
115 | |
116 | (void)hv_iterinit(stash); |
117 | |
118 | if (filter == TYPE_FILTER_NONE) { |
119 | while ( (he = hv_iternext(stash)) ) { |
120 | STRLEN keylen; |
121 | const char *key = HePV(he, keylen); |
122 | if (!cb(key, keylen, HeVAL(he), ud)) { |
123 | return; |
124 | } |
125 | } |
126 | return; |
127 | } |
128 | |
129 | while ( (he = hv_iternext(stash)) ) { |
9135ad30 |
130 | GV * const gv = (GV*)HeVAL(he); |
d846ade3 |
131 | STRLEN keylen; |
9135ad30 |
132 | const char * const key = HePV(he, keylen); |
133 | SV *sv = NULL; |
d846ade3 |
134 | |
9135ad30 |
135 | if(isGV(gv)){ |
136 | switch (filter) { |
137 | case TYPE_FILTER_CODE: sv = (SV *)GvCVu(gv); break; |
138 | case TYPE_FILTER_ARRAY: sv = (SV *)GvAV(gv); break; |
139 | case TYPE_FILTER_IO: sv = (SV *)GvIO(gv); break; |
140 | case TYPE_FILTER_HASH: sv = (SV *)GvHV(gv); break; |
141 | case TYPE_FILTER_SCALAR: sv = (SV *)GvSV(gv); break; |
142 | default: |
143 | croak("Unknown type"); |
144 | } |
145 | } |
146 | /* expand the gv into a real typeglob if it |
147 | * contains stub functions or constants and we |
148 | * were asked to return CODE references */ |
149 | else if (filter == TYPE_FILTER_CODE) { |
150 | gv_init(gv, stash, key, keylen, GV_ADDMULTI); |
151 | sv = (SV *)GvCV(gv); |
d846ade3 |
152 | } |
153 | |
154 | if (sv) { |
d846ade3 |
155 | if (!cb(key, keylen, sv, ud)) { |
156 | return; |
157 | } |
158 | } |
159 | } |
160 | } |
161 | |
162 | static bool |
163 | collect_all_symbols (const char *key, STRLEN keylen, SV *val, void *ud) |
164 | { |
165 | HV *hash = (HV *)ud; |
166 | |
167 | if (!hv_store (hash, key, keylen, newRV_inc(val), 0)) { |
168 | croak("failed to store symbol ref"); |
169 | } |
170 | |
171 | return TRUE; |
172 | } |
173 | |
174 | HV * |
e1f52a8a |
175 | mop_get_all_package_symbols (HV *stash, type_filter_t filter) |
d846ade3 |
176 | { |
177 | HV *ret = newHV (); |
e1f52a8a |
178 | mop_get_package_symbols (stash, filter, collect_all_symbols, ret); |
d846ade3 |
179 | return ret; |
180 | } |
22932438 |
181 | |
95ac09c5 |
182 | #define DECLARE_KEY(name) { #name, #name, NULL, 0 } |
183 | #define DECLARE_KEY_WITH_VALUE(name, value) { #name, value, NULL, 0 } |
184 | |
22932438 |
185 | /* the order of these has to match with those in mop.h */ |
186 | static struct { |
187 | const char *name; |
188 | const char *value; |
189 | SV *key; |
190 | U32 hash; |
191 | } prehashed_keys[key_last] = { |
192 | DECLARE_KEY(name), |
193 | DECLARE_KEY(package), |
194 | DECLARE_KEY(package_name), |
195 | DECLARE_KEY(body), |
196 | DECLARE_KEY_WITH_VALUE(package_cache_flag, "_package_cache_flag"), |
197 | DECLARE_KEY(methods), |
198 | DECLARE_KEY(VERSION), |
199 | DECLARE_KEY(ISA) |
200 | }; |
201 | |
20c230c5 |
202 | SV * |
22932438 |
203 | mop_prehashed_key_for (mop_prehashed_key_t key) |
204 | { |
205 | return prehashed_keys[key].key; |
206 | } |
207 | |
20c230c5 |
208 | U32 |
22932438 |
209 | mop_prehashed_hash_for (mop_prehashed_key_t key) |
210 | { |
211 | return prehashed_keys[key].hash; |
212 | } |
213 | |
214 | void |
215 | mop_prehash_keys () |
216 | { |
217 | int i; |
22932438 |
218 | for (i = 0; i < key_last; i++) { |
219 | const char *value = prehashed_keys[i].value; |
220 | prehashed_keys[i].key = newSVpv(value, strlen(value)); |
221 | PERL_HASH(prehashed_keys[i].hash, value, strlen(value)); |
222 | } |
223 | } |
7ec7b950 |
224 | |
384bb6c9 |
225 | XS(mop_xs_simple_reader) |
7ec7b950 |
226 | { |
384bb6c9 |
227 | #ifdef dVAR |
228 | dVAR; dXSARGS; |
229 | #else |
230 | dXSARGS; |
231 | #endif |
7ec7b950 |
232 | register HE *he; |
4f201502 |
233 | mop_prehashed_key_t key = (mop_prehashed_key_t)CvXSUBANY(cv).any_i32; |
384bb6c9 |
234 | SV *self; |
235 | |
236 | if (items != 1) { |
237 | croak("expected exactly one argument"); |
238 | } |
239 | |
240 | self = ST(0); |
7ec7b950 |
241 | |
242 | if (!SvROK(self)) { |
243 | croak("can't call %s as a class method", prehashed_keys[key].name); |
244 | } |
245 | |
246 | if (SvTYPE(SvRV(self)) != SVt_PVHV) { |
247 | croak("object is not a hashref"); |
248 | } |
249 | |
38d91ddc |
250 | if ((he = hv_fetch_ent((HV *)SvRV(self), prehashed_keys[key].key, 0, prehashed_keys[key].hash))) { |
251 | ST(0) = HeVAL(he); |
7ec7b950 |
252 | } |
384bb6c9 |
253 | else { |
38d91ddc |
254 | ST(0) = &PL_sv_undef; |
7ec7b950 |
255 | } |
256 | |
7ec7b950 |
257 | XSRETURN(1); |
258 | } |
259 | |