#include "perl.h"
#include "keywords.h"
#include "feature.h"
+#include "regcomp.h"
#define CALL_PEEP(o) PL_peepp(aTHX_ o)
#define CALL_RPEEP(o) PL_rpeepp(aTHX_ o)
return off;
}
+/*
+=for apidoc alloccopstash
+
+Available only under threaded builds, this function allocates an entry in
+C<PL_stashpad> for the stash passed to it.
+
+=cut
+*/
+
#ifdef USE_ITHREADS
PADOFFSET
Perl_alloccopstash(pTHX_ HV *hv)
case OP_MATCH:
case OP_QR:
clear_pmop:
+ if (!(cPMOPo->op_pmflags & PMf_CODELIST_PRIVATE))
+ op_free(cPMOPo->op_code_list);
+ cPMOPo->op_code_list = NULL;
forget_pmop(cPMOPo, 1);
cPMOPo->op_pmreplrootu.op_pmreplroot = NULL;
/* we use the same protection as the "SAFE" version of the PM_ macros
PERL_ARGS_ASSERT_COP_FREE;
CopFILE_free(cop);
- CopSTASH_free(cop);
if (! specialWARN(cop->cop_warnings))
PerlMemShared_free(cop->cop_warnings);
cophh_free(CopHINTHASH_get(cop));
}
else
return bind_match(type, left,
- pmruntime(newPMOP(OP_MATCH, 0), right, 0));
+ pmruntime(newPMOP(OP_MATCH, 0), right, 0, 0));
}
OP *
else
scalar(PL_eval_root);
- /* don't use LINKLIST, since PL_eval_root might indirect through
- * a rather expensive function call and LINKLIST evaluates its
- * argument more than once */
PL_eval_start = op_linklist(PL_eval_root);
PL_eval_root->op_private |= OPpREFCOUNTED;
OpREFCNT_set(PL_eval_root, 1);
if (IN_LOCALE_COMPILETIME)
goto nope;
break;
+ case OP_REPEAT:
+ if (o->op_private & OPpREPEAT_DOLIST) goto nope;
}
if (PL_parser && PL_parser->error_count)
* split "pattern", which aren't. In the former case, expr will be a list
* if the pattern contains more than one term (eg /a$b/) or if it contains
* a replacement, ie s/// or tr///.
+ *
+ * When the pattern has been compiled within a new anon CV (for
+ * qr/(?{...})/ ), then floor indicates the savestack level just before
+ * the new sub was created
*/
OP *
-Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg)
+Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg, I32 floor)
{
dVAR;
PMOP *pm;
LOGOP *rcop;
I32 repl_has_vars = 0;
OP* repl = NULL;
- bool reglist;
+ bool is_trans = (o->op_type == OP_TRANS || o->op_type == OP_TRANSR);
+ bool is_compiletime;
+ bool has_code;
PERL_ARGS_ASSERT_PMRUNTIME;
- if (
- o->op_type == OP_SUBST
- || o->op_type == OP_TRANS || o->op_type == OP_TRANSR
- ) {
- /* last element in list is the replacement; pop it */
+ /* for s/// and tr///, last element in list is the replacement; pop it */
+
+ if (is_trans || o->op_type == OP_SUBST) {
OP* kid;
repl = cLISTOPx(expr)->op_last;
kid = cLISTOPx(expr)->op_first;
cLISTOPx(expr)->op_last = kid;
}
- if (isreg && expr->op_type == OP_LIST &&
- cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last)
- {
- /* convert single element list to element */
+ /* for TRANS, convert LIST/PUSH/CONST into CONST, and pass to pmtrans() */
+
+ if (is_trans) {
OP* const oe = expr;
- expr = cLISTOPx(oe)->op_first->op_sibling;
+ assert(expr->op_type == OP_LIST);
+ assert(cLISTOPx(expr)->op_first->op_type == OP_PUSHMARK);
+ assert(cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last);
+ expr = cLISTOPx(oe)->op_last;
cLISTOPx(oe)->op_first->op_sibling = NULL;
cLISTOPx(oe)->op_last = NULL;
op_free(oe);
- }
- if (o->op_type == OP_TRANS || o->op_type == OP_TRANSR) {
return pmtrans(o, expr, repl);
}
- reglist = isreg && expr->op_type == OP_LIST;
- if (reglist)
- op_null(expr);
+ /* find whether we have any runtime or code elements;
+ * at the same time, temporarily set the op_next of each DO block;
+ * then when we LINKLIST, this will cause the DO blocks to be excluded
+ * from the op_next chain (and from having LINKLIST recursively
+ * applied to them). We fix up the DOs specially later */
+
+ is_compiletime = 1;
+ has_code = 0;
+ if (expr->op_type == OP_LIST) {
+ OP *o;
+ for (o = cLISTOPx(expr)->op_first; o; o = o->op_sibling) {
+ if (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL)) {
+ has_code = 1;
+ assert(!o->op_next && o->op_sibling);
+ o->op_next = o->op_sibling;
+ }
+ else if (o->op_type != OP_CONST && o->op_type != OP_PUSHMARK)
+ is_compiletime = 0;
+ }
+ }
+ else if (expr->op_type != OP_CONST)
+ is_compiletime = 0;
+
+ LINKLIST(expr);
+
+ /* fix up DO blocks; treat each one as a separate little sub */
+
+ if (expr->op_type == OP_LIST) {
+ OP *o;
+ for (o = cLISTOPx(expr)->op_first; o; o = o->op_sibling) {
+ if (!(o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL)))
+ continue;
+ o->op_next = NULL; /* undo temporary hack from above */
+ scalar(o);
+ LINKLIST(o);
+ if (cLISTOPo->op_first->op_type == OP_LEAVE) {
+ LISTOP *leave = cLISTOPx(cLISTOPo->op_first);
+ /* skip ENTER */
+ assert(leave->op_first->op_type == OP_ENTER);
+ assert(leave->op_first->op_sibling);
+ o->op_next = leave->op_first->op_sibling;
+ /* skip LEAVE */
+ assert(leave->op_flags & OPf_KIDS);
+ assert(leave->op_last->op_next = (OP*)leave);
+ leave->op_next = NULL; /* stop on last op */
+ op_null((OP*)leave);
+ }
+ else {
+ /* skip SCOPE */
+ OP *scope = cLISTOPo->op_first;
+ assert(scope->op_type == OP_SCOPE);
+ assert(scope->op_flags & OPf_KIDS);
+ scope->op_next = NULL; /* stop on last op */
+ op_null(scope);
+ }
+ /* have to peep the DOs individually as we've removed it from
+ * the op_next chain */
+ CALL_PEEP(o);
+ if (is_compiletime)
+ /* runtime finalizes as part of finalizing whole tree */
+ finalize_optree(o);
+ }
+ }
PL_hints |= HINT_BLOCK_SCOPE;
pm = (PMOP*)o;
+ assert(floor==0 || (pm->op_pmflags & PMf_HAS_CV));
- if (expr->op_type == OP_CONST) {
- SV *pat = ((SVOP*)expr)->op_sv;
- U32 pm_flags = pm->op_pmflags & RXf_PMf_COMPILETIME;
+ if (is_compiletime) {
+ U32 rx_flags = pm->op_pmflags & RXf_PMf_COMPILETIME;
+ regexp_engine const *eng = current_re_engine();
if (o->op_flags & OPf_SPECIAL)
- pm_flags |= RXf_SPLIT;
-
- if (DO_UTF8(pat)) {
- assert (SvUTF8(pat));
- } else if (SvUTF8(pat)) {
- /* Not doing UTF-8, despite what the SV says. Is this only if we're
- trapped in use 'bytes'? */
- /* Make a copy of the octet sequence, but without the flag on, as
- the compiler now honours the SvUTF8 flag on pat. */
- STRLEN len;
- const char *const p = SvPV(pat, len);
- pat = newSVpvn_flags(p, len, SVs_TEMP);
- }
-
- PM_SETRE(pm, CALLREGCOMP(pat, pm_flags));
+ rx_flags |= RXf_SPLIT;
+
+ if (!has_code || !eng->op_comp) {
+ /* compile-time simple constant pattern */
+
+ if ((pm->op_pmflags & PMf_HAS_CV) && !has_code) {
+ /* whoops! we guessed that a qr// had a code block, but we
+ * were wrong (e.g. /[(?{}]/ ). Throw away the PL_compcv
+ * that isn't required now. Note that we have to be pretty
+ * confident that nothing used that CV's pad while the
+ * regex was parsed */
+ assert(AvFILLp(PL_comppad) == 0); /* just @_ */
+ LEAVE_SCOPE(floor);
+ pm->op_pmflags &= ~PMf_HAS_CV;
+ }
+ PM_SETRE(pm,
+ eng->op_comp
+ ? eng->op_comp(aTHX_ NULL, 0, expr, eng, NULL, NULL,
+ rx_flags, pm->op_pmflags)
+ : Perl_re_op_compile(aTHX_ NULL, 0, expr, eng, NULL, NULL,
+ rx_flags, pm->op_pmflags)
+ );
#ifdef PERL_MAD
- op_getmad(expr,(OP*)pm,'e');
+ op_getmad(expr,(OP*)pm,'e');
#else
- op_free(expr);
+ op_free(expr);
#endif
+ }
+ else {
+ /* compile-time pattern that includes literal code blocks */
+ REGEXP* re = eng->op_comp(aTHX_ NULL, 0, expr, eng, NULL, NULL,
+ rx_flags,
+ (pm->op_pmflags |
+ ((PL_hints & HINT_RE_EVAL) ? PMf_USE_RE_EVAL : 0))
+ );
+ PM_SETRE(pm, re);
+ if (pm->op_pmflags & PMf_HAS_CV) {
+ CV *cv;
+ /* this QR op (and the anon sub we embed it in) is never
+ * actually executed. It's just a placeholder where we can
+ * squirrel away expr in op_code_list without the peephole
+ * optimiser etc processing it for a second time */
+ OP *qr = newPMOP(OP_QR, 0);
+ ((PMOP*)qr)->op_code_list = expr;
+
+ /* handle the implicit sub{} wrapped round the qr/(?{..})/ */
+ SvREFCNT_inc_simple_void(PL_compcv);
+ cv = newATTRSUB(floor, 0, NULL, NULL, qr);
+ ((struct regexp *)SvANY(re))->qr_anoncv = cv;
+
+ /* attach the anon CV to the pad so that
+ * pad_fixup_inner_anons() can find it */
+ (void)pad_add_anon(cv, o->op_type);
+ SvREFCNT_inc_simple_void(cv);
+ }
+ else {
+ pm->op_code_list = expr;
+ }
+ }
}
else {
- if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL))
- expr = newUNOP((!(PL_hints & HINT_RE_EVAL)
- ? OP_REGCRESET
- : OP_REGCMAYBE),0,expr);
+ /* runtime pattern: build chain of regcomp etc ops */
+ bool reglist;
+ PADOFFSET cv_targ = 0;
+
+ reglist = isreg && expr->op_type == OP_LIST;
+ if (reglist)
+ op_null(expr);
+
+ if (has_code) {
+ pm->op_code_list = expr;
+ /* don't free op_code_list; its ops are embedded elsewhere too */
+ pm->op_pmflags |= PMf_CODELIST_PRIVATE;
+ }
+
+ /* the OP_REGCMAYBE is a placeholder in the non-threaded case
+ * to allow its op_next to be pointed past the regcomp and
+ * preceding stacking ops;
+ * OP_REGCRESET is there to reset taint before executing the
+ * stacking ops */
+ if (pm->op_pmflags & PMf_KEEP || PL_tainting)
+ expr = newUNOP((PL_tainting ? OP_REGCRESET : OP_REGCMAYBE),0,expr);
+
+ if (pm->op_pmflags & PMf_HAS_CV) {
+ /* we have a runtime qr with literal code. This means
+ * that the qr// has been wrapped in a new CV, which
+ * means that runtime consts, vars etc will have been compiled
+ * against a new pad. So... we need to execute those ops
+ * within the environment of the new CV. So wrap them in a call
+ * to a new anon sub. i.e. for
+ *
+ * qr/a$b(?{...})/,
+ *
+ * we build an anon sub that looks like
+ *
+ * sub { "a", $b, '(?{...})' }
+ *
+ * and call it, passing the returned list to regcomp.
+ * Or to put it another way, the list of ops that get executed
+ * are:
+ *
+ * normal PMf_HAS_CV
+ * ------ -------------------
+ * pushmark (for regcomp)
+ * pushmark (for entersub)
+ * pushmark (for refgen)
+ * anoncode
+ * refgen
+ * entersub
+ * regcreset regcreset
+ * pushmark pushmark
+ * const("a") const("a")
+ * gvsv(b) gvsv(b)
+ * const("(?{...})") const("(?{...})")
+ * leavesub
+ * regcomp regcomp
+ */
+
+ SvREFCNT_inc_simple_void(PL_compcv);
+ /* these lines are just an unrolled newANONATTRSUB */
+ expr = newSVOP(OP_ANONCODE, 0,
+ MUTABLE_SV(newATTRSUB(floor, 0, NULL, NULL, expr)));
+ cv_targ = expr->op_targ;
+ expr = newUNOP(OP_REFGEN, 0, expr);
+
+ expr = list(force_list(newUNOP(OP_ENTERSUB, 0, scalar(expr))));
+ }
NewOp(1101, rcop, 1, LOGOP);
rcop->op_type = OP_REGCOMP;
rcop->op_flags |= OPf_KIDS
| ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0)
| (reglist ? OPf_STACKED : 0);
- rcop->op_private = 1;
+ rcop->op_private = 0;
rcop->op_other = o;
- if (reglist)
- rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP);
+ rcop->op_targ = cv_targ;
/* /$x/ may cause an eval, since $x might be qr/(?{..})/ */
if (PL_hints & HINT_RE_EVAL) PL_cv_has_eval = 1;
/* establish postfix order */
- if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) {
+ if (expr->op_type == OP_REGCRESET || expr->op_type == OP_REGCMAYBE) {
LINKLIST(expr);
rcop->op_next = expr;
((UNOP*)expr)->op_first->op_next = (OP*)rcop;
OP *imop;
OP *veop;
#ifdef PERL_MAD
- OP *pegop = newOP(OP_NULL,0);
+ OP *pegop = PL_madskills ? newOP(OP_NULL,0) : NULL;
#endif
SV *use_version = NULL;
PL_cop_seqmax++;
#ifdef PERL_MAD
- if (!PL_madskills) {
- /* FIXME - don't allocate pegop if !PL_madskills */
- op_free(pegop);
- return NULL;
- }
return pegop;
#endif
}
U32 ps_utf8 = 0;
register CV *cv = NULL;
SV *const_sv;
+ const bool ec = PL_parser && PL_parser->error_count;
/* If the subroutine has no body, no attributes, and no builtin attributes
then it's just a sub declaration, and we may be able to get away with
storing with a placeholder scalar in the symbol table, rather than a
full GV and CV. If anything is present then it will take a full CV to
store it. */
const I32 gv_fetch_flags
- = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS)
+ = ec ? GV_NOADD_NOINIT :
+ (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS)
|| PL_madskills)
? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT;
STRLEN namlen = 0;
SAVEFREEOP(attrs);
}
+ if (ec) {
+ op_free(block);
+ if (name && block) {
+ const char *s = strrchr(name, ':');
+ s = s ? s+1 : name;
+ if (strEQ(s, "BEGIN")) {
+ const char not_safe[] =
+ "BEGIN not safe after errors--compilation aborted";
+ if (PL_in_eval & EVAL_KEEPERR)
+ Perl_croak(aTHX_ not_safe);
+ else {
+ /* force display of errors found but not reported */
+ sv_catpv(ERRSV, not_safe);
+ Perl_croak(aTHX_ "%"SVf, SVfARG(ERRSV));
+ }
+ }
+ }
+ cv = PL_compcv;
+ goto done;
+ }
+
if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at
maximum a prototype before. */
if (SvTYPE(gv) > SVt_NULL) {
}
}
if (const_sv) {
- HV *stash;
SvREFCNT_inc_simple_void_NN(const_sv);
if (cv) {
assert(!CvROOT(cv) && !CvCONST(cv));
const_sv
);
}
- stash =
- (CvGV(cv) && GvSTASH(CvGV(cv)))
- ? GvSTASH(CvGV(cv))
- : CvSTASH(cv)
- ? CvSTASH(cv)
- : PL_curstash;
- if (HvENAME_HEK(stash))
- mro_method_changed_in(stash); /* sub Foo::Bar () { 123 } */
if (PL_madskills)
goto install_block;
op_free(block);
if ( ps_utf8 ) SvUTF8_on(MUTABLE_SV(cv));
}
- if (PL_parser && PL_parser->error_count) {
- op_free(block);
- block = NULL;
- if (name) {
- const char *s = strrchr(name, ':');
- s = s ? s+1 : name;
- if (strEQ(s, "BEGIN")) {
- const char not_safe[] =
- "BEGIN not safe after errors--compilation aborted";
- if (PL_in_eval & EVAL_KEEPERR)
- Perl_croak(aTHX_ not_safe);
- else {
- /* force display of errors found but not reported */
- sv_catpv(ERRSV, not_safe);
- Perl_croak(aTHX_ "%"SVf, SVfARG(ERRSV));
- }
- }
- }
- }
install_block:
if (!block)
goto attrs;
return cv;
}
+CV *
+Perl_newSTUB(pTHX_ GV *gv, bool fake)
+{
+ register CV *cv = MUTABLE_CV(newSV_type(SVt_PVCV));
+ PERL_ARGS_ASSERT_NEWSTUB;
+ assert(!GvCVu(gv));
+ GvCV_set(gv, cv);
+ GvCVGEN(gv) = 0;
+ if (!fake && HvENAME_HEK(GvSTASH(gv)))
+ mro_method_changed_in(GvSTASH(gv));
+ CvGV_set(cv, gv);
+ CvFILE_set_from_cop(cv, PL_curcop);
+ CvSTASH_set(cv, PL_curstash);
+ GvMULTI_on(gv);
+ return cv;
+}
+
/*
=for apidoc U||newXS
if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) {
OP * const sibl = kid->op_sibling;
kid->op_sibling = 0;
- kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0);
+ kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0, 0);
if (cLISTOPo->op_first == cLISTOPo->op_last)
cLISTOPo->op_last = kid;
cLISTOPo->op_first = kid;
firstcop->cop_hints_hash = secondcop->cop_hints_hash;
#ifdef USE_ITHREADS
- secondcop->cop_stashoff = NULL;
+ secondcop->cop_stashoff = 0;
secondcop->cop_file = NULL;
#else
secondcop->cop_stash = NULL;
case OP_RUNCV:
if (!(o->op_private & OPpOFFBYONE) && !CvCLONE(PL_compcv)) {
SV *sv;
- if (CvUNIQUE(PL_compcv)) sv = &PL_sv_undef;
+ if (CvEVAL(PL_compcv)) sv = &PL_sv_undef;
else {
sv = newRV((SV *)PL_compcv);
sv_rvweaken(sv);
https://perl5.git.perl.org / perl5.git / blobdiff