1 /* This file is part of the Sub::Op Perl module.
2 * See http://search.cpan.org/dist/Sub-Op/ */
4 #define PERL_NO_GET_CONTEXT
9 #define __PACKAGE__ "Sub::Op"
10 #define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1)
12 /* --- Compatibility wrappers ---------------------------------------------- */
14 #define SO_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
16 /* ... Thread safety and multiplicity ...................................... */
18 #ifndef SO_MULTIPLICITY
19 # if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
20 # define SO_MULTIPLICITY 1
22 # define SO_MULTIPLICITY 0
25 #if SO_MULTIPLICITY && !defined(tTHX)
26 # define tTHX PerlInterpreter*
29 #if SO_MULTIPLICITY && defined(USE_ITHREADS) && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && (defined(MY_CXT_CLONE) || defined(dMY_CXT_SV))
30 # define SO_THREADSAFE 1
32 # define MY_CXT_CLONE \
34 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
35 Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
36 sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
39 # define SO_THREADSAFE 0
41 # define dMY_CXT dNOOP
43 # define MY_CXT indirect_globaldata
45 # define START_MY_CXT STATIC my_cxt_t MY_CXT;
47 # define MY_CXT_INIT NOOP
49 # define MY_CXT_CLONE NOOP
52 /* --- Global data --------------------------------------------------------- */
54 #define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
63 #endif /* SO_THREADSAFE */
70 STATIC SV *so_clone(pTHX_ SV *sv, tTHX owner) {
71 #define so_clone(S, O) so_clone(aTHX_ (S), (O))
76 if (SvTYPE(sv) == SVt_PVHV && HvNAME_get(sv))
79 param.stashes = stashes;
81 param.proto_perl = owner;
83 dupsv = sv_dup(sv, ¶m);
87 SvREFCNT_dec(stashes);
90 return SvREFCNT_inc(dupsv);
93 #endif /* SO_THREADSAFE */
95 /* --- Public API ---------------------------------------------------------- */
99 void sub_op_register(pTHX_ const sub_op_keyword *k) {
100 SV *key = newSViv(PTR2IV(k->pp));
102 if (!PL_custom_op_names)
103 PL_custom_op_names = newHV();
104 (void) hv_store_ent(PL_custom_op_names, key, newSVpv(k->name, k->len), 0);
106 if (!PL_custom_op_descs)
107 PL_custom_op_descs = newHV();
108 (void) hv_store_ent(PL_custom_op_descs, key, newSVpv(k->name, k->len), 0);
111 SV *check = newSViv(PTR2IV(k->check));
112 sv_magicext(key, check, PERL_MAGIC_ext, NULL, k->ud, 0);
118 (void) hv_store(MY_CXT.map, k->name, k->len, key, 0);
122 /* --- Private helpers ----------------------------------------------------- */
124 #define SO_LINKLIST(O) ((O)->op_next ? (O)->op_next : sub_op_linklist(O))
126 STATIC OP *sub_op_linklist(pTHX_ OP *o) {
127 #define sub_op_linklist(O) sub_op_linklist(aTHX_ (O))
133 /* establish postfix order */
134 first = cUNOPo->op_first;
137 o->op_next = SO_LINKLIST(first);
140 if (kid->op_sibling) {
141 kid->op_next = SO_LINKLIST(kid->op_sibling);
142 kid = kid->op_sibling;
155 STATIC IV sub_op_hint(pTHX) {
156 #define sub_op_hint() sub_op_hint(aTHX)
159 #if SO_HAS_PERL(5, 9, 5)
160 hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
162 __PACKAGE__, __PACKAGE_LEN__,
167 SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, 0);
174 return (SvOK(hint) && SvIOK(hint)) ? SvIVX(hint) : 0;
177 STATIC OP *(*sub_op_old_ck_entersub)(pTHX_ OP *) = 0;
179 STATIC OP *sub_op_ck_entersub(pTHX_ OP *o) {
182 o = CALL_FPTR(sub_op_old_ck_entersub)(aTHX_ o);
187 SV *pkg, *name, *pp_sv;
189 pkg = av_pop(MY_CXT.next_pkg);
193 name = av_pop(MY_CXT.next_name);
200 HV *stash = gv_stashsv(pkg, 0);
203 HE *he = hv_fetch_ent(stash, name, 0, 0);
210 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder){
213 if (!GvSV(gv) && !GvAV(gv) && !GvHV(gv) && !GvIO(gv) && !GvFORM(gv))
214 (void) hv_delete_ent(stash, name, G_DISCARD, hash);
221 HE *he = hv_fetch_ent(MY_CXT.map, name, 0, hash);
230 if (o->op_type != OP_ENTERSUB)
232 if (o->op_private & OPpENTERSUB_AMPER) /* hopefully \&foo */
236 OP *ex_list = cUNOPo->op_first;
240 /* pushmark when a method call */
241 if (!ex_list || ex_list->op_type != OP_NULL)
244 rv2cv = cUNOPx(ex_list)->op_first;
249 OP *next = rv2cv->op_sibling;
256 if (!(rv2cv->op_flags & OPf_KIDS))
259 gvop = cUNOPx(rv2cv)->op_first;
260 if (!gvop || gvop->op_type != OP_GV)
264 GV *gv = cGVOPx_gv(gvop);
266 const char *s = SvPV_const(name, len);
268 if (GvNAMELEN(gv) == len && strnEQ(GvNAME(gv), s, len)) {
269 o->op_type = OP_CUSTOM;
270 o->op_ppaddr = INT2PTR(Perl_ppaddr_t, SvIVX(pp_sv));
273 last_arg->op_sibling = NULL;
277 MAGIC *mg = mg_find(pp_sv, PERL_MAGIC_ext);
279 sub_op_check_t check = INT2PTR(sub_op_check_t, SvIVX(mg->mg_obj));
280 o = CALL_FPTR(check)(aTHX_ o, mg->mg_ptr);
297 /* --- XS ------------------------------------------------------------------ */
299 MODULE = Sub::Op PACKAGE = Sub::Op
306 MY_CXT.map = newHV();
307 MY_CXT.next_pkg = newAV();
308 MY_CXT.next_name = newAV();
309 MY_CXT.placeholder = NULL;
312 #endif /* SO_THREADSAFE */
314 sub_op_old_ck_entersub = PL_check[OP_ENTERSUB];
315 PL_check[OP_ENTERSUB] = sub_op_ck_entersub;
330 owner = MY_CXT.owner;
331 map = (HV *) so_clone((SV *) MY_CXT.map, owner);
332 placeholder = (CV *) so_clone((SV *) MY_CXT.placeholder, owner);
337 MY_CXT.next_pkg = newAV();
338 MY_CXT.next_name = newAV();
339 MY_CXT.placeholder = placeholder;
343 #endif /* SO_THREADSAFE */
351 if (SvTYPE(sv) >= SVt_PVCV) {
353 SvREFCNT_dec(MY_CXT.placeholder);
354 MY_CXT.placeholder = (CV *) SvREFCNT_inc(sv);
360 _incoming(SV *name, SV *pkg)
364 av_push(MY_CXT.next_pkg, SvREFCNT_inc(pkg));
365 av_push(MY_CXT.next_name, SvREFCNT_inc(name));
378 o = INT2PTR(OP *, SvIV(SvRV(op)));
379 if (!o || o->op_type != OP_CUSTOM)
381 key = newSViv(PTR2IV(o->op_ppaddr));
382 he = hv_fetch_ent(PL_custom_op_names, key, 0, 0);
386 ST(0) = sv_mortalcopy(HeVAL(he));