1 /* This file is part of the re::engine::Plugin Perl module.
2 * See http://search.cpan.org/dist/re-engine-Plugin/ */
4 #define PERL_NO_GET_CONTEXT
11 #define __PACKAGE__ "re::engine::Plugin"
12 #define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1)
14 #define REP_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
16 #ifndef REP_WORKAROUND_REQUIRE_PROPAGATION
17 # define REP_WORKAROUND_REQUIRE_PROPAGATION !REP_HAS_PERL(5, 10, 1)
20 /* ... Thread safety and multiplicity ...................................... */
22 #ifndef REP_MULTIPLICITY
23 # if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
24 # define REP_MULTIPLICITY 1
26 # define REP_MULTIPLICITY 0
29 #if REP_MULTIPLICITY && !defined(tTHX)
30 # define tTHX PerlInterpreter*
33 #if REP_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))
34 # define REP_THREADSAFE 1
36 # define MY_CXT_CLONE \
38 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
39 Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
40 sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
43 # define REP_THREADSAFE 0
45 # define dMY_CXT dNOOP
47 # define MY_CXT rep_globaldata
49 # define START_MY_CXT STATIC my_cxt_t MY_CXT;
51 # define MY_CXT_INIT NOOP
53 # define MY_CXT_CLONE NOOP
56 /* --- Helpers ------------------------------------------------------------- */
58 /* ... Thread-safe hints ................................................... */
63 #if REP_WORKAROUND_REQUIRE_PROPAGATION
70 #define PTABLE_VAL_FREE(V) { \
71 rep_hint_t *h = (V); \
72 SvREFCNT_dec(h->comp); \
73 SvREFCNT_dec(h->exec); \
74 PerlMemShared_free(h); \
84 #define ptable_store(T, K, V) ptable_store(aTHX_ (T), (K), (V))
85 #define ptable_free(T) ptable_free(aTHX_ (T))
87 #define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
96 STATIC SV *rep_clone(pTHX_ SV *sv, tTHX owner) {
97 #define rep_clone(S, O) rep_clone(aTHX_ (S), (O))
102 if (SvTYPE(sv) == SVt_PVHV && HvNAME_get(sv))
105 param.stashes = stashes;
107 param.proto_perl = owner;
109 dupsv = sv_dup(sv, ¶m);
113 SvREFCNT_dec(stashes);
116 return SvREFCNT_inc(dupsv);
119 STATIC void rep_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) {
121 rep_hint_t *h1 = ent->val;
124 if (ud->owner == aTHX)
127 h2 = PerlMemShared_malloc(sizeof *h2);
128 h2->comp = rep_clone(h1->comp, ud->owner);
129 SvREFCNT_inc(h2->comp);
130 h2->exec = rep_clone(h1->exec, ud->owner);
131 SvREFCNT_inc(h2->exec);
132 #if REP_WORKAROUND_REQUIRE_PROPAGATION
133 h2->requires = h1->requires;
136 ptable_store(ud->tbl, ent->key, h2);
139 STATIC void rep_thread_cleanup(pTHX_ void *);
141 STATIC void rep_thread_cleanup(pTHX_ void *ud) {
147 SAVEDESTRUCTOR_X(rep_thread_cleanup, level);
151 PerlMemShared_free(level);
152 ptable_free(MY_CXT.tbl);
156 #endif /* REP_THREADSAFE */
158 STATIC SV *rep_validate_callback(SV *code) {
163 if (SvTYPE(code) < SVt_PVCV)
166 return SvREFCNT_inc_simple_NN(code);
169 STATIC SV *rep_tag(pTHX_ SV *comp, SV *exec) {
170 #define rep_tag(C, E) rep_tag(aTHX_ (C), (E))
174 h = PerlMemShared_malloc(sizeof *h);
176 h->comp = rep_validate_callback(comp);
177 h->exec = rep_validate_callback(exec);
179 #if REP_WORKAROUND_REQUIRE_PROPAGATION
184 for (si = PL_curstackinfo; si; si = si->si_prev) {
187 for (cxix = si->si_cxix; cxix >= 0; --cxix) {
188 const PERL_CONTEXT *cx = si->si_cxstack + cxix;
190 if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE)
195 h->requires = requires;
200 /* We only need for the key to be an unique tag for looking up the value later.
201 * Allocated memory provides convenient unique identifiers, so that's why we
202 * use the hint as the key itself. */
203 ptable_store(MY_CXT.tbl, h, h);
204 #endif /* REP_THREADSAFE */
206 return newSViv(PTR2IV(h));
209 STATIC const rep_hint_t *rep_detag(pTHX_ const SV *hint) {
210 #define rep_detag(H) rep_detag(aTHX_ (H))
214 if (!(hint && SvIOK(hint)))
217 h = INT2PTR(rep_hint_t *, SvIVX(hint));
219 h = ptable_fetch(MY_CXT.tbl, h);
220 #endif /* REP_THREADSAFE */
222 #if REP_WORKAROUND_REQUIRE_PROPAGATION
227 for (si = PL_curstackinfo; si; si = si->si_prev) {
230 for (cxix = si->si_cxix; cxix >= 0; --cxix) {
231 const PERL_CONTEXT *cx = si->si_cxstack + cxix;
233 if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE
234 && ++requires > h->requires)
244 STATIC U32 rep_hash = 0;
246 STATIC const rep_hint_t *rep_hint(pTHX) {
247 #define rep_hint() rep_hint(aTHX)
250 /* We already require 5.9.5 for the regexp engine API. */
251 hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
253 __PACKAGE__, __PACKAGE_LEN__,
257 return rep_detag(hint);
261 #if PERL_VERSION <= 10
262 Plugin_comp(pTHX_ const SV * const pattern, const U32 flags)
264 Plugin_comp(pTHX_ SV * const pattern, U32 flags)
271 re__engine__Plugin re;
275 if (!h) /* This looks like a pragma leak. Apply the default behaviour */
276 return re_compile(pattern, flags);
278 /* exp/xend version of the pattern & length */
280 char* exp = SvPV((SV*)pattern, plen);
282 /* Our blessed object */
285 Newxz(re, 1, struct replug);
286 sv_setref_pv(obj, "re::engine::Plugin", (void*)re);
291 re->rx = rx; /* Make the rx accessible from self->rx */
292 rx->intflags = flags; /* Flags for internal use */
293 rx->extflags = flags; /* Flags for perl to use */
294 rx->engine = RE_ENGINE_PLUGIN; /* Compile to use this engine */
296 #if PERL_VERSION <= 10
297 rx->refcnt = 1; /* Refcount so we won't be destroyed */
299 /* Precompiled pattern for pp_regcomp to use */
301 rx->precomp = savepvn(exp, rx->prelen);
303 /* Set up qr// stringification to be equivalent to the supplied
304 * pattern, this should be done via overload eventually.
306 rx->wraplen = rx->prelen;
307 Newx(rx->wrapped, rx->wraplen, char);
308 Copy(rx->precomp, rx->wrapped, rx->wraplen, char);
311 /* Store our private object */
314 /* Store the pattern for ->pattern */
315 re->pattern = (SV*)pattern;
316 SvREFCNT_inc(re->pattern);
318 /* If there's an exec callback, store it into the private object so
319 * that it will be the one to be called, even if the engine changes
322 re->cb_exec = h->exec;
323 SvREFCNT_inc_simple_void_NN(h->exec);
326 re->cb_num_capture_buff_FETCH = NULL;
327 re->cb_num_capture_buff_STORE = NULL;
328 re->cb_num_capture_buff_LENGTH = NULL;
330 /* Call our callback function if one was defined, if not we've
331 * already set up all the stuff we're going to to need for
332 * subsequent exec and other calls */
341 call_sv(h->comp, G_DISCARD);
347 /* If any of the comp-time accessors were called we'll have to
348 * update the regexp struct with the new info.
351 buffers = rx->nparens;
353 Newxz(rx->offs, buffers + 1, regexp_paren_pair);
359 Plugin_exec(pTHX_ REGEXP * const RX, char *stringarg, char *strend,
360 char *strbeg, I32 minend, SV *sv, void *data, U32 flags)
364 struct regexp *rx = rxREGEXP(RX);
365 GET_SELF_FROM_PPRIVATE(rx->pprivate);
368 /* Store the current str for ->str */
370 SvREFCNT_inc(self->str);
376 XPUSHs(rx->pprivate);
380 call_sv(self->cb_exec, G_SCALAR);
402 Plugin_intuit(pTHX_ REGEXP * const RX, SV *sv, char *strpos,
403 char *strend, U32 flags, re_scream_pos_data *data)
407 PERL_UNUSED_ARG(strpos);
408 PERL_UNUSED_ARG(strend);
409 PERL_UNUSED_ARG(flags);
410 PERL_UNUSED_ARG(data);
415 Plugin_checkstr(pTHX_ REGEXP * const RX)
422 Plugin_free(pTHX_ REGEXP * const RX)
424 struct regexp *rx = rxREGEXP(RX);
425 GET_SELF_FROM_PPRIVATE(rx->pprivate);
427 SvREFCNT_dec(self->pattern);
428 SvREFCNT_dec(self->str);
430 SvREFCNT_dec(self->cb_exec);
432 SvREFCNT_dec(self->cb_num_capture_buff_FETCH);
433 SvREFCNT_dec(self->cb_num_capture_buff_STORE);
434 SvREFCNT_dec(self->cb_num_capture_buff_LENGTH);
443 callback = self->cb_free;
450 XPUSHs(rx->pprivate);
453 call_sv(callback, G_DISCARD);
464 Plugin_dupe(pTHX_ REGEXP * const RX, CLONE_PARAMS *param)
466 struct regexp *rx = rxREGEXP(RX);
467 Perl_croak(aTHX_ "dupe not supported yet");
473 Plugin_numbered_buff_FETCH(pTHX_ REGEXP * const RX, const I32 paren,
479 struct regexp *rx = rxREGEXP(RX);
480 GET_SELF_FROM_PPRIVATE(rx->pprivate);
482 callback = self->cb_num_capture_buff_FETCH;
489 XPUSHs(rx->pprivate);
490 XPUSHs(sv_2mortal(newSViv(paren)));
493 items = call_sv(callback, G_SCALAR);
501 sv_setsv(sv, &PL_sv_undef);
508 sv_setsv(sv, &PL_sv_undef);
513 Plugin_numbered_buff_STORE(pTHX_ REGEXP * const RX, const I32 paren,
514 SV const * const value)
518 struct regexp *rx = rxREGEXP(RX);
519 GET_SELF_FROM_PPRIVATE(rx->pprivate);
521 callback = self->cb_num_capture_buff_STORE;
528 XPUSHs(rx->pprivate);
529 XPUSHs(sv_2mortal(newSViv(paren)));
530 XPUSHs(SvREFCNT_inc((SV *) value));
533 call_sv(callback, G_DISCARD);
542 Plugin_numbered_buff_LENGTH(pTHX_ REGEXP * const RX, const SV * const sv,
547 struct regexp *rx = rxREGEXP(RX);
548 GET_SELF_FROM_PPRIVATE(rx->pprivate);
550 callback = self->cb_num_capture_buff_LENGTH;
557 XPUSHs(rx->pprivate);
558 XPUSHs(sv_2mortal(newSViv(paren)));
561 call_sv(callback, G_SCALAR);
573 /* TODO: call FETCH and get the length on that value */
580 Plugin_named_buff (pTHX_ REGEXP * const RX, SV * const key, SV * const value,
587 Plugin_named_buff_iter (pTHX_ REGEXP * const RX, const SV * const lastkey,
594 Plugin_package(pTHX_ REGEXP * const RX)
597 return newSVpvs("re::engine::Plugin");
602 STATIC U32 rep_initialized = 0;
604 STATIC void rep_teardown(pTHX_ void *root) {
607 if (!rep_initialized || aTHX != root)
610 ptable_free(MY_CXT.tbl);
615 STATIC void rep_setup(pTHX) {
616 #define rep_setup() rep_setup(aTHX)
621 MY_CXT.tbl = ptable_new();
624 call_atexit(rep_teardown, aTHX);
629 #else /* REP_THREADSAFE */
633 #endif /* !REP_THREADSAFE */
635 STATIC U32 rep_booted = 0;
637 /* --- XS ------------------------------------------------------------------ */
639 MODULE = re::engine::Plugin PACKAGE = re::engine::Plugin
646 PERL_HASH(rep_hash, __PACKAGE__, __PACKAGE_LEN__);
663 ud.tbl = t = ptable_new();
664 ud.owner = MY_CXT.owner;
665 ptable_walk(MY_CXT.tbl, rep_ptable_clone, &ud);
676 pattern(re::engine::Plugin self, ...)
678 XPUSHs(self->pattern);
681 str(re::engine::Plugin self, ...)
686 mod(re::engine::Plugin self, ...)
689 if (self->rx->intflags & PMf_FOLD) {
690 XPUSHs(sv_2mortal(newSVpvs("i")));
695 if (self->rx->intflags & PMf_MULTILINE) {
696 XPUSHs(sv_2mortal(newSVpvs("m")));
701 if (self->rx->intflags & PMf_SINGLELINE) {
702 XPUSHs(sv_2mortal(newSVpvs("s")));
707 if (self->rx->intflags & PMf_EXTENDED) {
708 XPUSHs(sv_2mortal(newSVpvs("x")));
713 if (self->rx->intflags & RXf_PMf_KEEPCOPY) {
714 XPUSHs(sv_2mortal(newSVpvs("p")));
719 stash(re::engine::Plugin self, ...)
723 SvREFCNT_inc(self->stash);
730 minlen(re::engine::Plugin self, ...)
733 self->rx->minlen = (I32)SvIV(ST(1));
736 if (self->rx->minlen) {
737 XPUSHs(sv_2mortal(newSViv(self->rx->minlen)));
739 XPUSHs(sv_2mortal(&PL_sv_undef));
744 gofs(re::engine::Plugin self, ...)
747 self->rx->gofs = (U32)SvIV(ST(1));
750 if (self->rx->gofs) {
751 XPUSHs(sv_2mortal(newSVuv(self->rx->gofs)));
753 XPUSHs(sv_2mortal(&PL_sv_undef));
758 nparens(re::engine::Plugin self, ...)
761 self->rx->nparens = (U32)SvIV(ST(1));
764 if (self->rx->nparens) {
765 XPUSHs(sv_2mortal(newSVuv(self->rx->nparens)));
767 XPUSHs(sv_2mortal(&PL_sv_undef));
772 _exec(re::engine::Plugin self, ...)
775 SvREFCNT_dec(self->cb_exec);
776 self->cb_exec = ST(1);
777 SvREFCNT_inc(self->cb_exec);
781 _num_capture_buff_FETCH(re::engine::Plugin self, ...)
784 SvREFCNT_dec(self->cb_num_capture_buff_FETCH);
785 self->cb_num_capture_buff_FETCH = ST(1);
786 SvREFCNT_inc(self->cb_num_capture_buff_FETCH);
790 _num_capture_buff_STORE(re::engine::Plugin self, ...)
793 SvREFCNT_dec(self->cb_num_capture_buff_STORE);
794 self->cb_num_capture_buff_STORE = ST(1);
795 SvREFCNT_inc(self->cb_num_capture_buff_STORE);
799 _num_capture_buff_LENGTH(re::engine::Plugin self, ...)
802 SvREFCNT_dec(self->cb_num_capture_buff_LENGTH);
803 self->cb_num_capture_buff_LENGTH = ST(1);
804 SvREFCNT_inc(self->cb_num_capture_buff_LENGTH);
808 _tag(SV *comp, SV *exec)
810 RETVAL = rep_tag(comp, exec);
817 XPUSHs(sv_2mortal(newSViv(PTR2IV(&engine_plugin))));