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) {
180 o = CALL_FPTR(sub_op_old_ck_entersub)(aTHX_ o);
183 OP *ex_list, *rv2cv, *gvop, *last_arg = NULL;
186 if (o->op_type != OP_ENTERSUB)
188 if (o->op_private & OPpENTERSUB_AMPER) /* hopefully \&foo */
191 ex_list = cUNOPo->op_first;
192 /* pushmark when a method call */
193 if (!ex_list || ex_list->op_type != OP_NULL)
196 rv2cv = cUNOPx(ex_list)->op_first;
201 OP *next = rv2cv->op_sibling;
208 if (!(rv2cv->op_flags & OPf_KIDS))
211 gvop = cUNOPx(rv2cv)->op_first;
212 if (!gvop || gvop->op_type != OP_GV)
215 gv = cGVOPx_gv(gvop);
218 HV *stash = GvSTASH(gv);
221 const char *name = GvNAME(gv);
222 I32 len = GvNAMELEN(gv);
225 svp = hv_fetch(MY_CXT.map, name, len, 0);
230 if (!pp_sv || !SvOK(pp_sv))
233 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
236 if (!GvSV(gv) && !GvAV(gv) && !GvHV(gv) && !GvIO(gv) && !GvFORM(gv)) {
237 (void) hv_delete(stash, name, len, G_DISCARD);
241 o->op_type = OP_CUSTOM;
242 o->op_ppaddr = INT2PTR(Perl_ppaddr_t, SvIVX(pp_sv));
245 last_arg->op_sibling = NULL;
250 MAGIC *mg = mg_find(pp_sv, PERL_MAGIC_ext);
252 sub_op_check_t check = INT2PTR(sub_op_check_t, SvIVX(mg->mg_obj));
253 o = CALL_FPTR(check)(aTHX_ o, mg->mg_ptr);
265 STATIC OP *(*sub_op_old_ck_gelem)(pTHX_ OP *) = 0;
267 STATIC OP *sub_op_ck_gelem(pTHX_ OP *o) {
268 o = CALL_FPTR(sub_op_old_ck_entersub)(aTHX_ o);
274 rv2gv = cUNOPo->op_first;
278 gvop = cUNOPx(rv2gv)->op_first;
279 if (!gvop || gvop->op_type != OP_GV)
282 gv = cGVOPx_gv(gvop);
290 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
293 if (!GvSV(gv) && !GvAV(gv) && !GvHV(gv) && !GvIO(gv) && !GvFORM(gv)) {
294 (void)hv_delete(GvSTASH(gv), GvNAME_get(gv), GvNAMELEN_get(gv), G_DISCARD);
304 /* --- XS ------------------------------------------------------------------ */
306 MODULE = Sub::Op PACKAGE = Sub::Op
313 MY_CXT.map = newHV();
314 MY_CXT.next_pkg = newAV();
315 MY_CXT.next_name = newAV();
316 MY_CXT.placeholder = NULL;
319 #endif /* SO_THREADSAFE */
321 sub_op_old_ck_entersub = PL_check[OP_ENTERSUB];
322 PL_check[OP_ENTERSUB] = sub_op_ck_entersub;
323 sub_op_old_ck_gelem = PL_check[OP_GELEM];
324 PL_check[OP_GELEM] = sub_op_ck_gelem;
339 owner = MY_CXT.owner;
340 map = (HV *) so_clone((SV *) MY_CXT.map, owner);
341 placeholder = (CV *) so_clone((SV *) MY_CXT.placeholder, owner);
346 MY_CXT.next_pkg = newAV();
347 MY_CXT.next_name = newAV();
348 MY_CXT.placeholder = placeholder;
352 #endif /* SO_THREADSAFE */
360 if (SvTYPE(sv) >= SVt_PVCV) {
362 SvREFCNT_dec(MY_CXT.placeholder);
363 MY_CXT.placeholder = (CV *) SvREFCNT_inc(sv);
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));